diff options
579 files changed, 9560 insertions, 3570 deletions
@@ -380,7 +380,7 @@ S: FutureTV Labs Ltd S: Brunswick House, 61-69 Newmarket Rd, Cambridge CB5 8EG S: United Kingdom -N: Thomas Bogendörfer +N: Thomas Bogendörfer E: tsbogend@alpha.franken.de D: PCnet32 driver, SONIC driver, JAZZ_ESP driver D: newport abscon driver, g364 framebuffer driver @@ -400,7 +400,7 @@ W: http://math-www.uni-paderborn.de/~axel/ D: Configuration help text support D: Linux CD and Support Giveaway List -N: Erik Inge Bolsø +N: Erik Inge Bolsø E: knan@mo.himolde.no D: Misc kernel hacks @@ -428,7 +428,7 @@ D: Various fixes (mostly networking) S: Montreal, Quebec S: Canada -N: Zoltán Böszörményi +N: Zoltán Böszörményi E: zboszor@mail.externet.hu D: MTRR emulation with Cyrix style ARR registers, Athlon MTRR support @@ -1029,11 +1029,11 @@ D: Future Domain TMC-16x0 SCSI driver (author) D: APM driver (early port) D: DRM drivers (author of several) -N: János Farkas +N: János Farkas E: chexum@shadow.banki.hu D: romfs, various (mostly networking) fixes P: 1024/F81FB2E1 41 B7 E4 E6 3E D4 A6 71 6D 9C F3 9F F2 BF DF 6E -S: Madarász Viktor utca 25 +S: Madarász Viktor utca 25 S: 1131 Budapest S: Hungary @@ -1044,10 +1044,10 @@ D: UDF filesystem S: (ask for current address) S: USA -N: Jürgen Fischer -E: fischer@norbit.de (=?iso-8859-1?q?J=FCrgen?= Fischer) +N: Jürgen Fischer +E: fischer@norbit.de D: Author of Adaptec AHA-152x SCSI driver -S: Schulstraße 18 +S: Schulstraße 18 S: 26506 Norden S: Germany @@ -1113,7 +1113,7 @@ E: fuganti@netbank.com.br D: random kernel hacker, ZF MachZ Watchdog driver S: Conectiva S.A. S: R. Tocantins, 89 - Cristo Rei -S: 80050-430 - Curitiba - Paraná +S: 80050-430 - Curitiba - Paraná S: Brazil N: Kumar Gala @@ -1258,12 +1258,12 @@ S: 44 St. Joseph Street, Suite 506 S: Toronto, Ontario, M4Y 2W4 S: Canada -N: Richard Günther +N: Richard Günther E: rguenth@tat.physik.uni-tuebingen.de W: http://www.tat.physik.uni-tuebingen.de/~rguenth P: 2048/2E829319 2F 83 FC 93 E9 E4 19 E2 93 7A 32 42 45 37 23 57 D: binfmt_misc -S: 72074 Tübingen +S: 72074 Tübingen S: Germany N: Justin Guyett @@ -1287,7 +1287,7 @@ N: Bruno Haible E: haible@ma2s2.mathematik.uni-karlsruhe.de D: SysV FS, shm swapping, memory management fixes S: 17 rue Danton -S: F - 94270 Le Kremlin-Bicêtre +S: F - 94270 Le Kremlin-Bicêtre S: France N: Greg Hankins @@ -1701,7 +1701,7 @@ S: Czech Republic N: Jakob Kemi E: jakob.kemi@telia.com D: V4L W9966 Webcam driver -S: Forsbyvägen 33 +S: Forsbyvägen 33 S: 74143 Knivsta S: Sweden @@ -2065,7 +2065,7 @@ D: misc. kernel hacking and debugging S: Cambridge, MA 02139 S: USA -N: Martin von Löwis +N: Martin von Löwis E: loewis@informatik.hu-berlin.de D: script binary format D: NTFS driver @@ -2142,7 +2142,7 @@ S: PO BOX 220, HFX. CENTRAL S: Halifax, Nova Scotia S: Canada B3J 3C8 -N: Kai Mäkisara +N: Kai Mäkisara E: Kai.Makisara@kolumbus.fi D: SCSI Tape Driver @@ -2785,10 +2785,10 @@ N: Juan Quintela E: quintela@fi.udc.es D: Memory Management hacking S: LFCIA -S: Departamento de Computación -S: Universidade da Coruña +S: Departamento de Computación +S: Universidade da Coruña S: E-15071 -S: A Coruña +S: A Coruña S: Spain N: Augusto Cesar Radtke @@ -2939,7 +2939,7 @@ E: aris@cathedrallabs.org D: Support for EtherExpress 10 ISA (i82595) in eepro driver D: User level driver support for input S: R. Jose Serrato, 130 - Santa Candida -S: 82640-320 - Curitiba - Paraná +S: 82640-320 - Curitiba - Paraná S: Brazil N: Alessandro Rubini @@ -3345,15 +3345,15 @@ P: 1024D/D0FE7AFB B24A 65C9 1D71 2AC2 DE87 CA26 189B 9946 D0FE 7AFB D: rcutorture maintainer D: lock annotations, finding and fixing lock bugs -N: Winfried Trümper +N: Winfried Trümper E: winni@xpilot.org W: http://www.shop.de/~winni/ D: German HOWTO, Crash-Kurs Linux (German, 100 comprehensive pages) D: CD-Writing HOWTO, various mini-HOWTOs D: One-week tutorials on Linux twice a year (free of charge) -D: Linux-Workshop Köln (aka LUG Cologne, Germany), Installfests +D: Linux-Workshop Köln (aka LUG Cologne, Germany), Installfests S: Tacitusstr. 6 -S: D-50968 Köln +S: D-50968 Köln N: Tsu-Sheng Tsao E: tsusheng@scf.usc.edu diff --git a/Documentation/ABI/removed/devfs b/Documentation/ABI/removed/devfs index 8195c4e0d0a1..8ffd28bf6598 100644 --- a/Documentation/ABI/removed/devfs +++ b/Documentation/ABI/removed/devfs @@ -6,7 +6,7 @@ Description: races, contains a naming policy within the kernel that is against the LSB, and can be replaced by using udev. The files fs/devfs/*, include/linux/devfs_fs*.h were removed, - along with the the assorted devfs function calls throughout the + along with the assorted devfs function calls throughout the kernel tree. Users: diff --git a/Documentation/DocBook/kernel-api.tmpl b/Documentation/DocBook/kernel-api.tmpl index a2b2b4d187c5..38f88b6ae405 100644 --- a/Documentation/DocBook/kernel-api.tmpl +++ b/Documentation/DocBook/kernel-api.tmpl @@ -84,6 +84,10 @@ X!Iinclude/linux/kobject.h !Ekernel/rcupdate.c </sect1> + <sect1><title>Device Resource Management</title> +!Edrivers/base/devres.c + </sect1> + </chapter> <chapter id="adt"> diff --git a/Documentation/MSI-HOWTO.txt b/Documentation/MSI-HOWTO.txt index d389388c733e..0d8240774fca 100644 --- a/Documentation/MSI-HOWTO.txt +++ b/Documentation/MSI-HOWTO.txt @@ -480,8 +480,8 @@ The PCI stack provides 3 possible levels of MSI disabling: 6.1. Disabling MSI on a single device -Under some circumstances, it might be required to disable MSI on a -single device, It may be achived by either not calling pci_enable_msi() +Under some circumstances it might be required to disable MSI on a +single device. This may be achieved by either not calling pci_enable_msi() or all, or setting the pci_dev->no_msi flag before (most of the time in a quirk). @@ -492,7 +492,7 @@ being able to route MSI between busses. In this case, MSI have to be disabled on all devices behind this bridge. It is achieves by setting the PCI_BUS_FLAGS_NO_MSI flag in the pci_bus->bus_flags of the bridge subordinate bus. There is no need to set the same flag on bridges that -are below the broken brigde. When pci_enable_msi() is called to enable +are below the broken bridge. When pci_enable_msi() is called to enable MSI on a device, pci_msi_supported() takes care of checking the NO_MSI flag in all parent busses of the device. diff --git a/Documentation/SubmitChecklist b/Documentation/SubmitChecklist index bd23dc0bc0c7..6491b2c45dd4 100644 --- a/Documentation/SubmitChecklist +++ b/Documentation/SubmitChecklist @@ -80,3 +80,7 @@ kernel patches. 23: Tested after it has been merged into the -mm patchset to make sure that it still works with all of the other queued patches and various changes in the VM, VFS, and other subsystems. + +24: Avoid whitespace damage such as indenting with spaces or whitespace + at the end of lines. You can test this by feeding the patch to + "git apply --check --whitespace=error-all" diff --git a/Documentation/SubmittingPatches b/Documentation/SubmittingPatches index b0d0043f7c46..a417b25fb1aa 100644 --- a/Documentation/SubmittingPatches +++ b/Documentation/SubmittingPatches @@ -363,7 +363,8 @@ area or subsystem of the kernel is being patched. The "summary phrase" in the email's Subject should concisely describe the patch which that email contains. The "summary phrase" should not be a filename. Do not use the same "summary -phrase" for every patch in a whole patch series. +phrase" for every patch in a whole patch series (where a "patch +series" is an ordered sequence of multiple, related patches). Bear in mind that the "summary phrase" of your email becomes a globally-unique identifier for that patch. It propagates diff --git a/Documentation/arm/Interrupts b/Documentation/arm/Interrupts index 72c93de8cd4e..0d3dbf1099bc 100644 --- a/Documentation/arm/Interrupts +++ b/Documentation/arm/Interrupts @@ -149,7 +149,7 @@ So, what's changed? 3. set_GPIO_IRQ_edge() is obsolete, and should be replaced by set_irq_type. -4. Direct access to SA1111 INTPOL is depreciated. Use set_irq_type instead. +4. Direct access to SA1111 INTPOL is deprecated. Use set_irq_type instead. 5. A handler is expected to perform any necessary acknowledgement of the parent IRQ via the correct chip specific function. For instance, if diff --git a/Documentation/arm/Samsung-S3C24XX/H1940.txt b/Documentation/arm/Samsung-S3C24XX/H1940.txt index d6b1de92b111..f4a7b22c8664 100644 --- a/Documentation/arm/Samsung-S3C24XX/H1940.txt +++ b/Documentation/arm/Samsung-S3C24XX/H1940.txt @@ -23,7 +23,7 @@ Support http://handhelds.org/moin/moin.cgi/HpIpaqH1940 - Herbert Pötzl pages: + Herbert Pötzl pages: http://vserver.13thfloor.at/H1940/ @@ -32,7 +32,7 @@ Maintainers ----------- This project is being maintained and developed by a variety - of people, including Ben Dooks, Arnaud Patard, and Herbert Pötzl. + of people, including Ben Dooks, Arnaud Patard, and Herbert Pötzl. Thanks to the many others who have also provided support. diff --git a/Documentation/auxdisplay/cfag12864b b/Documentation/auxdisplay/cfag12864b index 3572b98f45b8..b714183d4125 100644 --- a/Documentation/auxdisplay/cfag12864b +++ b/Documentation/auxdisplay/cfag12864b @@ -78,9 +78,9 @@ Select (17)------------------------------(16) Data / Instruction Ground (18)---[GND] [+5v]---(19) LED + Ground (19)---[GND] Ground (20)---[GND] E A Values: -Ground (21)---[GND] [GND]---[P1]---(18) Vee · R = Resistor = 22 ohm -Ground (22)---[GND] | · P1 = Preset = 10 Kohm -Ground (23)---[GND] ---- S ------( 3) V0 · P2 = Preset = 1 Kohm +Ground (21)---[GND] [GND]---[P1]---(18) Vee - R = Resistor = 22 ohm +Ground (22)---[GND] | - P1 = Preset = 10 Kohm +Ground (23)---[GND] ---- S ------( 3) V0 - P2 = Preset = 1 Kohm Ground (24)---[GND] | | Ground (25)---[GND] [GND]---[P2]---[R]---(20) LED - diff --git a/Documentation/binfmt_misc.txt b/Documentation/binfmt_misc.txt index d097f09ee15a..f609ebf9c78f 100644 --- a/Documentation/binfmt_misc.txt +++ b/Documentation/binfmt_misc.txt @@ -113,4 +113,4 @@ cause unexpected behaviour and can be a security hazard. There is a web page about binfmt_misc at http://www.tat.physik.uni-tuebingen.de/~rguenth/linux/binfmt_misc.html -Richard Günther <rguenth@tat.physik.uni-tuebingen.de> +Richard Günther <rguenth@tat.physik.uni-tuebingen.de> diff --git a/Documentation/block/ioprio.txt b/Documentation/block/ioprio.txt index 96ccf681075e..1b930ef5a079 100644 --- a/Documentation/block/ioprio.txt +++ b/Documentation/block/ioprio.txt @@ -6,10 +6,10 @@ Intro ----- With the introduction of cfq v3 (aka cfq-ts or time sliced cfq), basic io -priorities is supported for reads on files. This enables users to io nice -processes or process groups, similar to what has been possible to cpu -scheduling for ages. This document mainly details the current possibilites -with cfq, other io schedulers do not support io priorities so far. +priorities are supported for reads on files. This enables users to io nice +processes or process groups, similar to what has been possible with cpu +scheduling for ages. This document mainly details the current possibilities +with cfq; other io schedulers do not support io priorities thus far. Scheduling classes ------------------ diff --git a/Documentation/cpu-freq/cpufreq-stats.txt b/Documentation/cpu-freq/cpufreq-stats.txt index 53d62c1e1c94..fc647492e940 100644 --- a/Documentation/cpu-freq/cpufreq-stats.txt +++ b/Documentation/cpu-freq/cpufreq-stats.txt @@ -17,7 +17,7 @@ Contents 1. Introduction -cpufreq-stats is a driver that provices CPU frequency statistics for each CPU. +cpufreq-stats is a driver that provides CPU frequency statistics for each CPU. These statistics are provided in /sysfs as a bunch of read_only interfaces. This interface (when configured) will appear in a separate directory under cpufreq in /sysfs (<sysfs root>/devices/system/cpu/cpuX/cpufreq/stats/) for each CPU. diff --git a/Documentation/cpu-hotplug.txt b/Documentation/cpu-hotplug.txt index cc60d29b954c..b6d24c22274b 100644 --- a/Documentation/cpu-hotplug.txt +++ b/Documentation/cpu-hotplug.txt @@ -217,14 +217,17 @@ Q: What happens when a CPU is being logically offlined? A: The following happen, listed in no particular order :-) - A notification is sent to in-kernel registered modules by sending an event - CPU_DOWN_PREPARE + CPU_DOWN_PREPARE or CPU_DOWN_PREPARE_FROZEN, depending on whether or not the + CPU is being offlined while tasks are frozen due to a suspend operation in + progress - All process is migrated away from this outgoing CPU to a new CPU - All interrupts targeted to this CPU is migrated to a new CPU - timers/bottom half/task lets are also migrated to a new CPU - Once all services are migrated, kernel calls an arch specific routine __cpu_disable() to perform arch specific cleanup. - Once this is successful, an event for successful cleanup is sent by an event - CPU_DEAD. + CPU_DEAD (or CPU_DEAD_FROZEN if tasks are frozen due to a suspend while the + CPU is being offlined). "It is expected that each service cleans up when the CPU_DOWN_PREPARE notifier is called, when CPU_DEAD is called its expected there is nothing @@ -242,9 +245,11 @@ A: This is what you would need in your kernel code to receive notifications. switch (action) { case CPU_ONLINE: + case CPU_ONLINE_FROZEN: foobar_online_action(cpu); break; case CPU_DEAD: + case CPU_DEAD_FROZEN: foobar_dead_action(cpu); break; } diff --git a/Documentation/crypto/api-intro.txt b/Documentation/crypto/api-intro.txt index 9b84b805ab75..a2ac6d294793 100644 --- a/Documentation/crypto/api-intro.txt +++ b/Documentation/crypto/api-intro.txt @@ -177,7 +177,7 @@ Portions of this API were derived from the following projects: and; Nettle (http://www.lysator.liu.se/~nisse/nettle/) - Niels Möller + Niels Möller Original developers of the crypto algorithms: @@ -200,8 +200,8 @@ SHA1 algorithm contributors: DES algorithm contributors: Raimar Falke - Gisle Sælensminde - Niels Möller + Gisle Sælensminde + Niels Möller Blowfish algorithm contributors: Herbert Valerio Riedel diff --git a/Documentation/device-mapper/delay.txt b/Documentation/device-mapper/delay.txt new file mode 100644 index 000000000000..15adc55359e5 --- /dev/null +++ b/Documentation/device-mapper/delay.txt @@ -0,0 +1,26 @@ +dm-delay +======== + +Device-Mapper's "delay" target delays reads and/or writes +and maps them to different devices. + +Parameters: + <device> <offset> <delay> [<write_device> <write_offset> <write_delay>] + +With separate write parameters, the first set is only used for reads. +Delays are specified in milliseconds. + +Example scripts +=============== +[[ +#!/bin/sh +# Create device delaying rw operation for 500ms +echo "0 `blockdev --getsize $1` delay $1 0 500" | dmsetup create delayed +]] + +[[ +#!/bin/sh +# Create device delaying only write operation for 500ms and +# splitting reads and writes to different devices $1 $2 +echo "0 `blockdev --getsize $1` delay $1 0 0 $2 0 500" | dmsetup create delayed +]] diff --git a/Documentation/driver-model/platform.txt b/Documentation/driver-model/platform.txt index f7c9262b2dc8..19c4a6e13676 100644 --- a/Documentation/driver-model/platform.txt +++ b/Documentation/driver-model/platform.txt @@ -16,7 +16,7 @@ host bridges to peripheral buses, and most controllers integrated into system-on-chip platforms. What they usually have in common is direct addressing from a CPU bus. Rarely, a platform_device will be connected through a segment of some other kind of bus; but its -registers will still be directly addressible. +registers will still be directly addressable. Platform devices are given a name, used in driver binding, and a list of resources such as addresses and IRQs. @@ -125,7 +125,7 @@ three different ways to find such a match: usually register later during booting, or by module loading. - Registering a driver using platform_driver_probe() works just like - using platform_driver_register(), except that the the driver won't + using platform_driver_register(), except that the driver won't be probed later if another device registers. (Which is OK, since this interface is only for use with non-hotpluggable devices.) diff --git a/Documentation/dvb/README.dvb-usb b/Documentation/dvb/README.dvb-usb index 46b78b7331c2..bf2a9cdfe7bb 100644 --- a/Documentation/dvb/README.dvb-usb +++ b/Documentation/dvb/README.dvb-usb @@ -228,5 +228,5 @@ Patches, comments and suggestions are very very welcome. Ulf Hermenau for helping me out with traditional chinese. - André Smoktun and Christian Frömmel for supporting me with + André Smoktun and Christian Frömmel for supporting me with hardware and listening to my problems very patiently. diff --git a/Documentation/dvb/contributors.txt b/Documentation/dvb/contributors.txt index 4c33cced5f65..4865addebe1c 100644 --- a/Documentation/dvb/contributors.txt +++ b/Documentation/dvb/contributors.txt @@ -66,7 +66,7 @@ Michael Dreher <michael@5dot1.de> Andreas 'randy' Weinberger for the support of the Fujitsu-Siemens Activy budget DVB-S -Kenneth Aafløy <ke-aa@frisurf.no> +Kenneth Aafløy <ke-aa@frisurf.no> for adding support for Typhoon DVB-S budget card Ernst Peinlich <e.peinlich@inode.at> diff --git a/Documentation/fb/arkfb.txt b/Documentation/fb/arkfb.txt new file mode 100644 index 000000000000..e8487a9d6a05 --- /dev/null +++ b/Documentation/fb/arkfb.txt @@ -0,0 +1,68 @@ + + arkfb - fbdev driver for ARK Logic chips + ======================================== + + +Supported Hardware +================== + + ARK 2000PV chip + ICS 5342 ramdac + + - only BIOS initialized VGA devices supported + - probably not working on big endian + + +Supported Features +================== + + * 4 bpp pseudocolor modes (with 18bit palette, two variants) + * 8 bpp pseudocolor mode (with 18bit palette) + * 16 bpp truecolor modes (RGB 555 and RGB 565) + * 24 bpp truecolor mode (RGB 888) + * 32 bpp truecolor mode (RGB 888) + * text mode (activated by bpp = 0) + * doublescan mode variant (not available in text mode) + * panning in both directions + * suspend/resume support + +Text mode is supported even in higher resolutions, but there is limitation to +lower pixclocks (i got maximum about 70 MHz, it is dependent on specific +hardware). This limitation is not enforced by driver. Text mode supports 8bit +wide fonts only (hardware limitation) and 16bit tall fonts (driver +limitation). Unfortunately character attributes (like color) in text mode are +broken for unknown reason, so its usefulness is limited. + +There are two 4 bpp modes. First mode (selected if nonstd == 0) is mode with +packed pixels, high nibble first. Second mode (selected if nonstd == 1) is mode +with interleaved planes (1 byte interleave), MSB first. Both modes support +8bit wide fonts only (driver limitation). + +Suspend/resume works on systems that initialize video card during resume and +if device is active (for example used by fbcon). + + +Missing Features +================ +(alias TODO list) + + * secondary (not initialized by BIOS) device support + * big endian support + * DPMS support + * MMIO support + * interlaced mode variant + * support for fontwidths != 8 in 4 bpp modes + * support for fontheight != 16 in text mode + * hardware cursor + * vsync synchronization + * feature connector support + * acceleration support (8514-like 2D) + + +Known bugs +========== + + * character attributes (and cursor) in text mode are broken + +-- +Ondrej Zajicek <santiago@crfreenet.org> diff --git a/Documentation/fb/aty128fb.txt b/Documentation/fb/aty128fb.txt index 069262fb619d..b605204fcfe1 100644 --- a/Documentation/fb/aty128fb.txt +++ b/Documentation/fb/aty128fb.txt @@ -54,8 +54,8 @@ Accepted options: noaccel - do not use acceleration engine. It is default. accel - use acceleration engine. Not finished. -vmode:x - chooses PowerMacintosh video mode <x>. Depreciated. -cmode:x - chooses PowerMacintosh colour mode <x>. Depreciated. +vmode:x - chooses PowerMacintosh video mode <x>. Deprecated. +cmode:x - chooses PowerMacintosh colour mode <x>. Deprecated. <XxX@X> - selects startup videomode. See modedb.txt for detailed explanation. Default is 640x480x8bpp. diff --git a/Documentation/fb/framebuffer.txt b/Documentation/fb/framebuffer.txt index 610e7801207b..b3e3a0356839 100644 --- a/Documentation/fb/framebuffer.txt +++ b/Documentation/fb/framebuffer.txt @@ -215,11 +215,11 @@ vertical retrace time is the sum of the upper margin, the lower margin and the vsync length. +----------+---------------------------------------------+----------+-------+ - | | ^ | | | + | | ↑ | | | | | |upper_margin | | | - | | ¥ | | | + | | ↓ | | | +----------###############################################----------+-------+ - | # ^ # | | + | # ↑ # | | | # | # | | | # | # | | | # | # | | @@ -238,15 +238,15 @@ vsync length. | # | # | | | # | # | | | # | # | | - | # ¥ # | | + | # ↓ # | | +----------###############################################----------+-------+ - | | ^ | | | + | | ↑ | | | | | |lower_margin | | | - | | ¥ | | | + | | ↓ | | | +----------+---------------------------------------------+----------+-------+ - | | ^ | | | + | | ↑ | | | | | |vsync_len | | | - | | ¥ | | | + | | ↓ | | | +----------+---------------------------------------------+----------+-------+ The frame buffer device expects all horizontal timings in number of dotclocks diff --git a/Documentation/fb/imacfb.txt b/Documentation/fb/imacfb.txt index 759028545a7e..316ec9bb7deb 100644 --- a/Documentation/fb/imacfb.txt +++ b/Documentation/fb/imacfb.txt @@ -17,7 +17,7 @@ How to use it? ============== Imacfb does not have any kind of autodetection of your machine. -You have to add the fillowing kernel parameters in your elilo.conf: +You have to add the following kernel parameters in your elilo.conf: Macbook : video=imacfb:macbook MacMini : diff --git a/Documentation/fb/sstfb.txt b/Documentation/fb/sstfb.txt index df27f5bf15db..550ca775a4cb 100644 --- a/Documentation/fb/sstfb.txt +++ b/Documentation/fb/sstfb.txt @@ -2,9 +2,9 @@ Introduction This is a frame buffer device driver for 3dfx' Voodoo Graphics - (aka voodoo 1, aka sst1) and Voodoo² (aka Voodoo 2, aka CVG) based + (aka voodoo 1, aka sst1) and Voodoo² (aka Voodoo 2, aka CVG) based video boards. It's highly experimental code, but is guaranteed to work - on my computer, with my "Maxi Gamer 3D" and "Maxi Gamer 3d²" boards, + on my computer, with my "Maxi Gamer 3D" and "Maxi Gamer 3d²" boards, and with me "between chair and keyboard". Some people tested other combinations and it seems that it works. The main page is located at <http://sstfb.sourceforge.net>, and if diff --git a/Documentation/fb/vt8623fb.txt b/Documentation/fb/vt8623fb.txt new file mode 100644 index 000000000000..f654576c56b7 --- /dev/null +++ b/Documentation/fb/vt8623fb.txt @@ -0,0 +1,64 @@ + + vt8623fb - fbdev driver for graphics core in VIA VT8623 chipset + =============================================================== + + +Supported Hardware +================== + + VIA VT8623 [CLE266] chipset and its graphics core + (known as CastleRock or Unichrome) + +I tested vt8623fb on VIA EPIA ML-6000 + + +Supported Features +================== + + * 4 bpp pseudocolor modes (with 18bit palette, two variants) + * 8 bpp pseudocolor mode (with 18bit palette) + * 16 bpp truecolor mode (RGB 565) + * 32 bpp truecolor mode (RGB 888) + * text mode (activated by bpp = 0) + * doublescan mode variant (not available in text mode) + * panning in both directions + * suspend/resume support + * DPMS support + +Text mode is supported even in higher resolutions, but there is limitation to +lower pixclocks (maximum about 100 MHz). This limitation is not enforced by +driver. Text mode supports 8bit wide fonts only (hardware limitation) and +16bit tall fonts (driver limitation). + +There are two 4 bpp modes. First mode (selected if nonstd == 0) is mode with +packed pixels, high nibble first. Second mode (selected if nonstd == 1) is mode +with interleaved planes (1 byte interleave), MSB first. Both modes support +8bit wide fonts only (driver limitation). + +Suspend/resume works on systems that initialize video card during resume and +if device is active (for example used by fbcon). + + +Missing Features +================ +(alias TODO list) + + * secondary (not initialized by BIOS) device support + * MMIO support + * interlaced mode variant + * support for fontwidths != 8 in 4 bpp modes + * support for fontheight != 16 in text mode + * hardware cursor + * video overlay support + * vsync synchronization + * acceleration support (8514-like 2D, busmaster transfers) + + +Known bugs +========== + + * cursor disable in text mode doesn't work + + +-- +Ondrej Zajicek <santiago@crfreenet.org> diff --git a/Documentation/filesystems/Locking b/Documentation/filesystems/Locking index 59c14159cc47..d866551be037 100644 --- a/Documentation/filesystems/Locking +++ b/Documentation/filesystems/Locking @@ -54,7 +54,7 @@ ata *); locking rules: all may block, none have BKL - i_sem(inode) + i_mutex(inode) lookup: yes create: yes link: yes (both) @@ -74,7 +74,7 @@ setxattr: yes getxattr: no listxattr: no removexattr: yes - Additionally, ->rmdir(), ->unlink() and ->rename() have ->i_sem on + Additionally, ->rmdir(), ->unlink() and ->rename() have ->i_mutex on victim. cross-directory ->rename() has (per-superblock) ->s_vfs_rename_sem. ->truncate() is never called directly - it's a callback, not a @@ -461,7 +461,7 @@ doesn't take the BKL. ->read on directories probably must go away - we should just enforce -EISDIR in sys_read() and friends. -->fsync() has i_sem on inode. +->fsync() has i_mutex on inode. --------------------------- dquot_operations ------------------------------- prototypes: diff --git a/Documentation/filesystems/hpfs.txt b/Documentation/filesystems/hpfs.txt index 38aba03efc5e..fa45c3baed98 100644 --- a/Documentation/filesystems/hpfs.txt +++ b/Documentation/filesystems/hpfs.txt @@ -290,7 +290,7 @@ History 2.07 More fixes for Warp Server. Now it really works 2.08 Creating new files is not so slow on large disks An attempt to sync deleted file does not generate filesystem error -2.09 Fixed error on extremly fragmented files +2.09 Fixed error on extremely fragmented files vim: set textwidth=80: diff --git a/Documentation/filesystems/ntfs.txt b/Documentation/filesystems/ntfs.txt index 81779068b09b..8ee10ec88293 100644 --- a/Documentation/filesystems/ntfs.txt +++ b/Documentation/filesystems/ntfs.txt @@ -349,7 +349,7 @@ end of the line. Note the "Should sync?" parameter "nosync" means that the two mirrors are already in sync which will be the case on a clean shutdown of Windows. If the mirrors are not clean, you can specify the "sync" option instead of "nosync" -and the Device-Mapper driver will then copy the entirey of the "Source Device" +and the Device-Mapper driver will then copy the entirety of the "Source Device" to the "Target Device" or if you specified multipled target devices to all of them. diff --git a/Documentation/filesystems/proc.txt b/Documentation/filesystems/proc.txt index 4f3e84c520a5..8756a07f4dc3 100644 --- a/Documentation/filesystems/proc.txt +++ b/Documentation/filesystems/proc.txt @@ -229,7 +229,7 @@ Table 1-3: Kernel info in /proc mounts Mounted filesystems net Networking info (see text) partitions Table of partitions known to the system - pci Depreciated info of PCI bus (new way -> /proc/bus/pci/, + pci Deprecated info of PCI bus (new way -> /proc/bus/pci/, decoupled by lspci (2.4) rtc Real time clock scsi SCSI info (see text) diff --git a/Documentation/filesystems/relay.txt b/Documentation/filesystems/relay.txt index 7fbb6ffe5769..18d23f9a18c7 100644 --- a/Documentation/filesystems/relay.txt +++ b/Documentation/filesystems/relay.txt @@ -351,7 +351,7 @@ If the current buffer is full, i.e. all sub-buffers remain unconsumed, the callback returns 0 to indicate that the buffer switch should not occur yet, i.e. until the consumer has had a chance to read the current set of ready sub-buffers. For the relay_buf_full() function -to make sense, the consumer is reponsible for notifying the relay +to make sense, the consumer is responsible for notifying the relay interface when sub-buffers have been consumed via relay_subbufs_consumed(). Any subsequent attempts to write into the buffer will again invoke the subbuf_start() callback with the same diff --git a/Documentation/filesystems/xip.txt b/Documentation/filesystems/xip.txt index 6c0cef10eb4d..3cc4010521a0 100644 --- a/Documentation/filesystems/xip.txt +++ b/Documentation/filesystems/xip.txt @@ -19,7 +19,7 @@ completely. With execute-in-place, read&write type operations are performed directly from/to the memory backed storage device. For file mappings, the storage device itself is mapped directly into userspace. -This implementation was initialy written for shared memory segments between +This implementation was initially written for shared memory segments between different virtual machines on s390 hardware to allow multiple machines to share the same binaries and libraries. diff --git a/Documentation/fujitsu/frv/gdbstub.txt b/Documentation/fujitsu/frv/gdbstub.txt index 9304fb36ae8a..b92bfd902a4e 100644 --- a/Documentation/fujitsu/frv/gdbstub.txt +++ b/Documentation/fujitsu/frv/gdbstub.txt @@ -126,5 +126,5 @@ GDB stub and the debugger: Furthermore, the GDB stub will intercept a number of exceptions automatically if they are caused by kernel execution. It will also intercept BUG() macro -invokation. +invocation. diff --git a/Documentation/hwmon/adm1026 b/Documentation/hwmon/adm1026 index 473c689d7924..f4327db2307e 100644 --- a/Documentation/hwmon/adm1026 +++ b/Documentation/hwmon/adm1026 @@ -80,7 +80,7 @@ temperature sensor inputs. Both the PWM output and the DAC output can be used to control fan speed. Usually only one of these two outputs will be used. Write the minimum PWM or DAC value to the appropriate control register. Then set the low temperature limit in the tmin values for each -temperature sensor. The range of control is fixed at 20 °C, and the +temperature sensor. The range of control is fixed at 20 °C, and the largest difference between current and tmin of the temperature sensors sets the control output. See the datasheet for several example circuits for controlling fan speed with the PWM and DAC outputs. The fan speed sensors diff --git a/Documentation/hwmon/gl518sm b/Documentation/hwmon/gl518sm index ce0881883bca..229f8b789185 100644 --- a/Documentation/hwmon/gl518sm +++ b/Documentation/hwmon/gl518sm @@ -13,7 +13,7 @@ Supported chips: Authors: Frodo Looijaard <frodol@dds.nl>, - Kyösti Mälkki <kmalkki@cc.hut.fi> + Kyösti Mälkki <kmalkki@cc.hut.fi> Hong-Gunn Chew <hglinux@gunnet.org> Jean Delvare <khali@linux-fr.org> diff --git a/Documentation/hwmon/lm83 b/Documentation/hwmon/lm83 index f7aad1489cb0..a04d1fe9269c 100644 --- a/Documentation/hwmon/lm83 +++ b/Documentation/hwmon/lm83 @@ -45,7 +45,7 @@ Unconfirmed motherboards: The LM82 is confirmed to have been found on most AMD Geode reference designs and test platforms. -The driver has been successfully tested by Magnus Forsström, who I'd +The driver has been successfully tested by Magnus Forsström, who I'd like to thank here. More testers will be of course welcome. The fact that the LM83 is only scarcely used can be easily explained. diff --git a/Documentation/hwmon/sis5595 b/Documentation/hwmon/sis5595 index b7ae36b8cdf5..4f8877a34f37 100644 --- a/Documentation/hwmon/sis5595 +++ b/Documentation/hwmon/sis5595 @@ -8,7 +8,7 @@ Supported chips: Datasheet: Publicly available at the Silicon Integrated Systems Corp. site. Authors: - Kyösti Mälkki <kmalkki@cc.hut.fi>, + Kyösti Mälkki <kmalkki@cc.hut.fi>, Mark D. Studebaker <mdsxyz123@yahoo.com>, Aurelien Jarno <aurelien@aurel32.net> 2.6 port diff --git a/Documentation/hwmon/via686a b/Documentation/hwmon/via686a index a936fb3824b2..d651b25f7519 100644 --- a/Documentation/hwmon/via686a +++ b/Documentation/hwmon/via686a @@ -8,7 +8,7 @@ Supported chips: Datasheet: On request through web form (http://www.via.com.tw/en/support/datasheets/) Authors: - Kyösti Mälkki <kmalkki@cc.hut.fi>, + Kyösti Mälkki <kmalkki@cc.hut.fi>, Mark D. Studebaker <mdsxyz123@yahoo.com> Bob Dougherty <bobd@stanford.edu> (Some conversion-factor data were contributed by diff --git a/Documentation/hwmon/w83792d b/Documentation/hwmon/w83792d index 8171c285bb55..14a668ed8aaa 100644 --- a/Documentation/hwmon/w83792d +++ b/Documentation/hwmon/w83792d @@ -107,7 +107,7 @@ Known problems: by CR[0x49h]. - The function of vid and vrm has not been finished, because I'm NOT very familiar with them. Adding support is welcome. - - The function of chassis open detection needs more tests. + - The function of chassis open detection needs more tests. - If you have ASUS server board and chip was not found: Then you will need to upgrade to latest (or beta) BIOS. If it does not help please contact us. diff --git a/Documentation/i2c/busses/i2c-i810 b/Documentation/i2c/busses/i2c-i810 index 83c3b9743c3c..778210ee1583 100644 --- a/Documentation/i2c/busses/i2c-i810 +++ b/Documentation/i2c/busses/i2c-i810 @@ -7,7 +7,7 @@ Supported adapters: Authors: Frodo Looijaard <frodol@dds.nl>, Philip Edelbrock <phil@netroedge.com>, - Kyösti Mälkki <kmalkki@cc.hut.fi>, + Kyösti Mälkki <kmalkki@cc.hut.fi>, Ralph Metzler <rjkm@thp.uni-koeln.de>, Mark D. Studebaker <mdsxyz123@yahoo.com> diff --git a/Documentation/i2c/busses/i2c-sis96x b/Documentation/i2c/busses/i2c-sis96x index 08d7b2dac69a..266481fd26e2 100644 --- a/Documentation/i2c/busses/i2c-sis96x +++ b/Documentation/i2c/busses/i2c-sis96x @@ -60,7 +60,7 @@ Mark D. Studebaker <mdsxyz123@yahoo.com> - design hints and bug fixes Alexander Maylsh <amalysh@web.de> - ditto, plus an important datasheet... almost the one I really wanted -Hans-Günter Lütke Uphues <hg_lu@t-online.de> +Hans-Günter Lütke Uphues <hg_lu@t-online.de> - patch for SiS735 Robert Zwerus <arzie@dds.nl> - testing for SiS645DX diff --git a/Documentation/i2c/busses/i2c-via b/Documentation/i2c/busses/i2c-via index 55edfe1a640b..343870661ac3 100644 --- a/Documentation/i2c/busses/i2c-via +++ b/Documentation/i2c/busses/i2c-via @@ -4,7 +4,7 @@ Supported adapters: * VIA Technologies, InC. VT82C586B Datasheet: Publicly available at the VIA website -Author: Kyösti Mälkki <kmalkki@cc.hut.fi> +Author: Kyösti Mälkki <kmalkki@cc.hut.fi> Description ----------- diff --git a/Documentation/i2c/busses/i2c-viapro b/Documentation/i2c/busses/i2c-viapro index 775f489e86f6..06b4be3ef6d8 100644 --- a/Documentation/i2c/busses/i2c-viapro +++ b/Documentation/i2c/busses/i2c-viapro @@ -17,7 +17,7 @@ Supported adapters: Datasheet: available on request and under NDA from VIA Authors: - Kyösti Mälkki <kmalkki@cc.hut.fi>, + Kyösti Mälkki <kmalkki@cc.hut.fi>, Mark D. Studebaker <mdsxyz123@yahoo.com>, Jean Delvare <khali@linux-fr.org> diff --git a/Documentation/i2c/i2c-protocol b/Documentation/i2c/i2c-protocol index b4022c914210..579b92d5f3a3 100644 --- a/Documentation/i2c/i2c-protocol +++ b/Documentation/i2c/i2c-protocol @@ -68,7 +68,7 @@ We have found some I2C devices that needs the following modifications: Flags I2C_M_IGNORE_NAK Normally message is interrupted immediately if there is [NA] from the - client. Setting this flag treats any [NA] as [A], and all of + client. Setting this flag treats any [NA] as [A], and all of message is sent. These messages may still fail to SCL lo->hi timeout. diff --git a/Documentation/i2o/README b/Documentation/i2o/README index 9aa6ddb446eb..0ebf58c73f54 100644 --- a/Documentation/i2o/README +++ b/Documentation/i2o/README @@ -30,13 +30,13 @@ Juha Sievanen, University of Helsinki Finland Bug fixes Core code extensions -Auvo Häkkinen, University of Helsinki Finland +Auvo Häkkinen, University of Helsinki Finland LAN OSM code /Proc interface to LAN class Bug fixes Core code extensions -Taneli Vähäkangas, University of Helsinki Finland +Taneli Vähäkangas, University of Helsinki Finland Fixes to i2o_config CREDITS diff --git a/Documentation/input/atarikbd.txt b/Documentation/input/atarikbd.txt index 668f4d0d97d6..ab050621e20f 100644 --- a/Documentation/input/atarikbd.txt +++ b/Documentation/input/atarikbd.txt @@ -179,9 +179,9 @@ reporting mode for joystick 1, with both buttons being logically assigned to the mouse. After any joystick command, the ikbd assumes that joysticks are connected to both Joystick0 and Joystick1. Any mouse command (except MOUSE DISABLE) then causes port 0 to again be scanned as if it were a mouse, and -both buttons are logically connected to it. If a mouse diable command is +both buttons are logically connected to it. If a mouse disable command is received while port 0 is presumed to be a mouse, the button is logically -assigned to Joystick1 ( until the mouse is reenabled by another mouse command). +assigned to Joystick1 (until the mouse is reenabled by another mouse command). 9. ikbd Command Set diff --git a/Documentation/input/xpad.txt b/Documentation/input/xpad.txt index 5427bdf225ed..aae0d404c566 100644 --- a/Documentation/input/xpad.txt +++ b/Documentation/input/xpad.txt @@ -65,15 +65,15 @@ of buttons, see section 0.3 - Unknown Controllers I've tested this with Stepmania, and it works quite well. -0.3 Unkown Controllers +0.3 Unknown Controllers ---------------------- -If you have an unkown xbox controller, it should work just fine with +If you have an unknown xbox controller, it should work just fine with the default settings. HOWEVER if you have an unknown dance pad not listed below, it will not work UNLESS you set "dpad_to_buttons" to 1 in the module configuration. -PLEASE if you have an unkown controller, email Dom <binary1230@yahoo.com> with +PLEASE, if you have an unknown controller, email Dom <binary1230@yahoo.com> with a dump from /proc/bus/usb and a description of the pad (manufacturer, country, whether it is a dance pad or normal controller) so that we can add your pad to the list of supported devices, ensuring that it will work out of the diff --git a/Documentation/isdn/CREDITS b/Documentation/isdn/CREDITS index e1b3023efaa8..7c17c837064f 100644 --- a/Documentation/isdn/CREDITS +++ b/Documentation/isdn/CREDITS @@ -2,7 +2,7 @@ I want to thank all who contributed to this project and especially to: (in alphabetical order) -Thomas Bogendörfer (tsbogend@bigbug.franken.de) +Thomas Bogendörfer (tsbogend@bigbug.franken.de) Tester, lots of bugfixes and hints. Alan Cox (alan@redhat.com) @@ -11,7 +11,7 @@ Alan Cox (alan@redhat.com) Henner Eisen (eis@baty.hanse.de) For X.25 implementation. -Volker Götz (volker@oops.franken.de) +Volker Götz (volker@oops.franken.de) For contribution of man-pages, the imontty-tool and a perfect maintaining of the mailing-list at hub-wue. diff --git a/Documentation/isdn/README b/Documentation/isdn/README index 761595243931..6783437f21c2 100644 --- a/Documentation/isdn/README +++ b/Documentation/isdn/README @@ -402,7 +402,7 @@ README for the ISDN-subsystem the script tools/tcltk/isdnmon. You can add actions for line-status changes. See the comments at the beginning of the script for how to do that. There are other tty-based tools in the tools-subdirectory - contributed by Michael Knigge (imon), Volker Götz (imontty) and + contributed by Michael Knigge (imon), Volker Götz (imontty) and Andreas Kool (isdnmon). l) For initial testing, you can set the verbose-level to 2 (default: 0). diff --git a/Documentation/isdn/README.icn b/Documentation/isdn/README.icn index a5f55eadb3ca..13f833d4e910 100644 --- a/Documentation/isdn/README.icn +++ b/Documentation/isdn/README.icn @@ -3,8 +3,8 @@ $Id: README.icn,v 1.7 2000/08/06 09:22:51 armin Exp $ You can get the ICN-ISDN-card from: Thinking Objects Software GmbH -Versbacher Röthe 159 -97078 Würzburg +Versbacher Röthe 159 +97078 Würzburg Tel: +49 931 2877950 Fax: +49 931 2877951 diff --git a/Documentation/java.txt b/Documentation/java.txt index c768dc63b34e..3cce3fbb6644 100644 --- a/Documentation/java.txt +++ b/Documentation/java.txt @@ -390,7 +390,7 @@ the execution bit, then just do originally by Brian A. Lantz, brian@lantz.com -heavily edited for binfmt_misc by Richard Günther +heavily edited for binfmt_misc by Richard Günther new scripts by Colin J. Watson <cjw44@cam.ac.uk> added executable Jar file support by Kurt Huwig <kurt@iku-netz.de> diff --git a/Documentation/kernel-docs.txt b/Documentation/kernel-docs.txt index c68dafeda7a7..d9e3b199929b 100644 --- a/Documentation/kernel-docs.txt +++ b/Documentation/kernel-docs.txt @@ -236,7 +236,7 @@ * Title: "Design and Implementation of the Second Extended Filesystem" - Author: Rémy Card, Theodore Ts'o, Stephen Tweedie. + Author: Rémy Card, Theodore Ts'o, Stephen Tweedie. URL: http://web.mit.edu/tytso/www/linux/ext2intro.html Keywords: ext2, linux fs history, inode, directory, link, devices, VFS, physical structure, performance, benchmarks, ext2fs library, diff --git a/Documentation/m68k/README.buddha b/Documentation/m68k/README.buddha index ef484a719bb9..3ea9827ba3c7 100644 --- a/Documentation/m68k/README.buddha +++ b/Documentation/m68k/README.buddha @@ -204,7 +204,7 @@ always shows a "no IRQ here" on the Buddha, and accesses to the third IDE port are going into data's Nirwana on the Buddha. - Jens Schönfeld february 19th, 1997 + Jens Schönfeld february 19th, 1997 updated may 27th, 1997 eMail: sysop@nostlgic.tng.oche.de diff --git a/Documentation/magic-number.txt b/Documentation/magic-number.txt index 0e740c812d12..bd450e797558 100644 --- a/Documentation/magic-number.txt +++ b/Documentation/magic-number.txt @@ -129,7 +129,7 @@ SAVEKMSG_MAGIC1 0x53415645 savekmsg arch/*/amiga/config.c GDA_MAGIC 0x58464552 gda include/asm-mips64/sn/gda.h RED_MAGIC1 0x5a2cf071 (any) mm/slab.c STL_PORTMAGIC 0x5a7182c9 stlport include/linux/stallion.h -EEPROM_MAGIC_VALUE 0X5ab478d2 lanai_dev drivers/atm/lanai.c +EEPROM_MAGIC_VALUE 0x5ab478d2 lanai_dev drivers/atm/lanai.c HDLCDRV_MAGIC 0x5ac6e778 hdlcdrv_state include/linux/hdlcdrv.h EPCA_MAGIC 0x5c6df104 channel include/linux/epca.h PCXX_MAGIC 0x5c6df104 channel drivers/char/pcxx.h diff --git a/Documentation/md.txt b/Documentation/md.txt index 2202f5dc8ac2..5818628207b5 100644 --- a/Documentation/md.txt +++ b/Documentation/md.txt @@ -178,6 +178,21 @@ All md devices contain: The size should be at least PAGE_SIZE (4k) and should be a power of 2. This can only be set while assembling an array + layout + The "layout" for the array for the particular level. This is + simply a number that is interpretted differently by different + levels. It can be written while assembling an array. + + reshape_position + This is either "none" or a sector number within the devices of + the array where "reshape" is up to. If this is set, the three + attributes mentioned above (raid_disks, chunk_size, layout) can + potentially have 2 values, an old and a new value. If these + values differ, reading the attribute returns + new (old) + and writing will effect the 'new' value, leaving the 'old' + unchanged. + component_size For arrays with data redundancy (i.e. not raid0, linear, faulty, multipath), all components must be the same size - or at least @@ -193,11 +208,6 @@ All md devices contain: 1.2 (newer format in varying locations) or "none" indicating that the kernel isn't managing metadata at all. - layout - The "layout" for the array for the particular level. This is - simply a number that is interpretted differently by different - levels. It can be written while assembling an array. - resync_start The point at which resync should start. If no resync is needed, this will be a very large number. At array creation it will @@ -259,29 +269,6 @@ All md devices contain: like active, but no writes have been seen for a while (safe_mode_delay). - sync_speed_min - sync_speed_max - This are similar to /proc/sys/dev/raid/speed_limit_{min,max} - however they only apply to the particular array. - If no value has been written to these, of if the word 'system' - is written, then the system-wide value is used. If a value, - in kibibytes-per-second is written, then it is used. - When the files are read, they show the currently active value - followed by "(local)" or "(system)" depending on whether it is - a locally set or system-wide value. - - sync_completed - This shows the number of sectors that have been completed of - whatever the current sync_action is, followed by the number of - sectors in total that could need to be processed. The two - numbers are separated by a '/' thus effectively showing one - value, a fraction of the process that is complete. - - sync_speed - This shows the current actual speed, in K/sec, of the current - sync_action. It is averaged over the last 30 seconds. - - As component devices are added to an md array, they appear in the 'md' directory as new directories named dev-XXX @@ -412,6 +399,35 @@ also have Note that the numbers are 'bit' numbers, not 'block' numbers. They should be scaled by the bitmap_chunksize. + sync_speed_min + sync_speed_max + This are similar to /proc/sys/dev/raid/speed_limit_{min,max} + however they only apply to the particular array. + If no value has been written to these, of if the word 'system' + is written, then the system-wide value is used. If a value, + in kibibytes-per-second is written, then it is used. + When the files are read, they show the currently active value + followed by "(local)" or "(system)" depending on whether it is + a locally set or system-wide value. + + sync_completed + This shows the number of sectors that have been completed of + whatever the current sync_action is, followed by the number of + sectors in total that could need to be processed. The two + numbers are separated by a '/' thus effectively showing one + value, a fraction of the process that is complete. + + sync_speed + This shows the current actual speed, in K/sec, of the current + sync_action. It is averaged over the last 30 seconds. + + suspend_lo + suspend_hi + The two values, given as numbers of sectors, indicate a range + within the array where IO will be blocked. This is currently + only supported for raid4/5/6. + + Each active md device may also have attributes specific to the personality module that manages it. These are specific to the implementation of the module and could diff --git a/Documentation/netlabel/introduction.txt b/Documentation/netlabel/introduction.txt index a4ffba1694c8..5ecd8d1dcf4e 100644 --- a/Documentation/netlabel/introduction.txt +++ b/Documentation/netlabel/introduction.txt @@ -30,7 +30,7 @@ The communication layer exists to allow NetLabel configuration and monitoring from user space. The NetLabel communication layer uses a message based protocol built on top of the Generic NETLINK transport mechanism. The exact formatting of these NetLabel messages as well as the Generic NETLINK family -names can be found in the the 'net/netlabel/' directory as comments in the +names can be found in the 'net/netlabel/' directory as comments in the header files as well as in 'include/net/netlabel.h'. * Security Module API diff --git a/Documentation/networking/6pack.txt b/Documentation/networking/6pack.txt index 48ed2b711bd2..d0777a1200e1 100644 --- a/Documentation/networking/6pack.txt +++ b/Documentation/networking/6pack.txt @@ -1,6 +1,6 @@ This is the 6pack-mini-HOWTO, written by -Andreas Könsgen DG3KQ +Andreas Könsgen DG3KQ Internet: ajk@iehk.rwth-aachen.de AMPR-net: dg3kq@db0pra.ampr.org AX.25: dg3kq@db0ach.#nrw.deu.eu diff --git a/Documentation/networking/NAPI_HOWTO.txt b/Documentation/networking/NAPI_HOWTO.txt index fb8dc6422a52..7907435a661c 100644 --- a/Documentation/networking/NAPI_HOWTO.txt +++ b/Documentation/networking/NAPI_HOWTO.txt @@ -160,7 +160,7 @@ on current cpu. This primitive is called by dev->poll(), when it completes its work. The device cannot be out of poll list at this call, if it is then clearly it is a BUG(). You'll know ;-> -All these above nethods are used below. So keep reading for clarity. +All of the above methods are used below, so keep reading for clarity. Device driver changes to be made when porting NAPI ================================================== diff --git a/Documentation/networking/packet_mmap.txt b/Documentation/networking/packet_mmap.txt index 5a232d946be3..db0cd5169581 100644 --- a/Documentation/networking/packet_mmap.txt +++ b/Documentation/networking/packet_mmap.txt @@ -13,7 +13,7 @@ You can find the latest version of this document at Please send me your comments to - Ulisses Alonso Camaró <uaca@i.hate.spam.alumni.uv.es> + Ulisses Alonso Camaró <uaca@i.hate.spam.alumni.uv.es> ------------------------------------------------------------------------------- + Why use PACKET_MMAP diff --git a/Documentation/networking/slicecom.hun b/Documentation/networking/slicecom.hun index 5acf1918694a..bed2f045e550 100644 --- a/Documentation/networking/slicecom.hun +++ b/Documentation/networking/slicecom.hun @@ -1,7 +1,7 @@ SliceCOM adapter felhasznaloi dokumentacioja - 0.51 verziohoz -Bartók István <bartoki@itc.hu> +Bartók István <bartoki@itc.hu> Utolso modositas: Wed Aug 29 17:26:58 CEST 2001 ----------------------------------------------------------------- diff --git a/Documentation/networking/slicecom.txt b/Documentation/networking/slicecom.txt index 32d3b916afad..c82c0cf981b4 100644 --- a/Documentation/networking/slicecom.txt +++ b/Documentation/networking/slicecom.txt @@ -1,9 +1,9 @@ SliceCOM adapter user's documentation - for the 0.51 driver version -Written by Bartók István <bartoki@itc.hu> +Written by Bartók István <bartoki@itc.hu> -English translation: Lakatos György <gyuri@itc.hu> +English translation: Lakatos György <gyuri@itc.hu> Mon Dec 11 15:28:42 CET 2000 Last modified: Wed Aug 29 17:25:37 CEST 2001 diff --git a/Documentation/networking/tms380tr.txt b/Documentation/networking/tms380tr.txt index c169a57bc925..1f73e13058df 100644 --- a/Documentation/networking/tms380tr.txt +++ b/Documentation/networking/tms380tr.txt @@ -71,24 +71,24 @@ Below find attached the setting for the SK NET TR 4/16 ISA adapters CHAPTER 1 LOCATION OF DIP-SWITCH ============================================================== -UÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ¿ -þUÄÄÄÄÄÄ¿ UÄÄÄÄÄ¿ UÄÄÄ¿ þ -þAÄÄÄÄÄÄU W1 AÄÄÄÄÄU UÄÄÄÄ¿ þ þ þ -þUÄÄÄÄÄÄ¿ þ þ þ þ UÄÄÅ¿ -þAÄÄÄÄÄÄU UÄÄÄÄÄÄÄÄÄÄÄ¿ AÄÄÄÄU þ þ þ þþ -þUÄÄÄÄÄÄ¿ þ þ UÄÄÄ¿ AÄÄÄU AÄÄÅU -þAÄÄÄÄÄÄU þ TMS380C26 þ þ þ þ -þUÄÄÄÄÄÄ¿ þ þ AÄÄÄU AÄ¿ -þAÄÄÄÄÄÄU þ þ þ þ -þ AÄÄÄÄÄÄÄÄÄÄÄU þ þ -þ þ þ -þ AÄU -þ þ -þ þ -þ þ -þ þ -AÄÄÄÄÄÄÄÄÄÄÄÄAÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄAÄÄAÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄAÄÄÄÄÄÄÄÄÄU - AÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄU AÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄU +UÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ¿ +þUÄÄÄÄÄÄ¿ UÄÄÄÄÄ¿ UÄÄÄ¿ þ +þAÄÄÄÄÄÄU W1 AÄÄÄÄÄU UÄÄÄÄ¿ þ þ þ +þUÄÄÄÄÄÄ¿ þ þ þ þ UÄÄÅ¿ +þAÄÄÄÄÄÄU UÄÄÄÄÄÄÄÄÄÄÄ¿ AÄÄÄÄU þ þ þ þþ +þUÄÄÄÄÄÄ¿ þ þ UÄÄÄ¿ AÄÄÄU AÄÄÅU +þAÄÄÄÄÄÄU þ TMS380C26 þ þ þ þ +þUÄÄÄÄÄÄ¿ þ þ AÄÄÄU AÄ¿ +þAÄÄÄÄÄÄU þ þ þ þ +þ AÄÄÄÄÄÄÄÄÄÄÄU þ þ +þ þ þ +þ AÄU +þ þ +þ þ +þ þ +þ þ +AÄÄÄÄÄÄÄÄÄÄÄÄAÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄAÄÄAÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄAÄÄÄÄÄÄÄÄÄU + AÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄU AÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄU ============================================================== CHAPTER 2 DEFAULT SETTINGS @@ -108,9 +108,9 @@ AÄÄÄÄÄÄÄÄÄÄÄÄAÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄAÄÄAÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄAÄÄÄÄÄÄÄÄÄU CHAPTER 3 DIP SWITCH W1 DESCRIPTION ============================================================== - UÄÄÄAÄÄÄAÄÄÄAÄÄÄAÄÄÄAÄÄÄAÄÄÄAÄÄÄ¿ ON - þ 1 þ 2 þ 3 þ 4 þ 5 þ 6 þ 7 þ 8 þ - AÄÄÄAÄÄÄAÄÄÄAÄÄÄAÄÄÄAÄÄÄAÄÄÄAÄÄÄU OFF + UÄÄÄAÄÄÄAÄÄÄAÄÄÄAÄÄÄAÄÄÄAÄÄÄAÄÄÄ¿ ON + þ 1 þ 2 þ 3 þ 4 þ 5 þ 6 þ 7 þ 8 þ + AÄÄÄAÄÄÄAÄÄÄAÄÄÄAÄÄÄAÄÄÄAÄÄÄAÄÄÄU OFF |AD | BootROM Addr. | I/O | +-+-+-------+-------+-----+-----+ | | | diff --git a/Documentation/networking/udplite.txt b/Documentation/networking/udplite.txt index dd6f46b83dab..6be09ba24a36 100644 --- a/Documentation/networking/udplite.txt +++ b/Documentation/networking/udplite.txt @@ -139,7 +139,7 @@ 3) Disabling the Checksum Computation On both sender and receiver, checksumming will always be performed - and can not be disabled using SO_NO_CHECK. Thus + and cannot be disabled using SO_NO_CHECK. Thus setsockopt(sockfd, SOL_SOCKET, SO_NO_CHECK, ... ); diff --git a/Documentation/networking/wan-router.txt b/Documentation/networking/wan-router.txt index 07dd6d9930a1..bc2ab419a74a 100644 --- a/Documentation/networking/wan-router.txt +++ b/Documentation/networking/wan-router.txt @@ -335,7 +335,7 @@ REVISION HISTORY creating applications using BiSync streaming. -2.0.5 Aug 04, 1999 CHDLC initializatin bug fix. +2.0.5 Aug 04, 1999 CHDLC initialization bug fix. PPP interrupt driven driver: Fix to the PPP line hangup problem. New PPP firmware @@ -372,7 +372,7 @@ REVISION HISTORY o cfgft1 GUI csu/dsu configurator o wancfg GUI configuration file configurator. - o Architectual directory changes. + o Architectural directory changes. beta-2.1.4 Jul 2000 o Dynamic interface configuration: Network interfaces reflect the state diff --git a/Documentation/pci.txt b/Documentation/pci.txt index e2c9d0a0c43d..d38261b67905 100644 --- a/Documentation/pci.txt +++ b/Documentation/pci.txt @@ -373,7 +373,7 @@ E.g. clearing pending interrupts. 3.6 Register IRQ handler ~~~~~~~~~~~~~~~~~~~~~~~~ -While calling request_irq() is the the last step described here, +While calling request_irq() is the last step described here, this is often just another intermediate step to initialize a device. This step can often be deferred until the device is opened for use. diff --git a/Documentation/pcieaer-howto.txt b/Documentation/pcieaer-howto.txt index 16c251230c82..d5da86170106 100644 --- a/Documentation/pcieaer-howto.txt +++ b/Documentation/pcieaer-howto.txt @@ -13,7 +13,7 @@ Reporting (AER) driver and provides information on how to use it, as well as how to enable the drivers of endpoint devices to conform with PCI Express AER driver. -1.2 Copyright © Intel Corporation 2006. +1.2 Copyright © Intel Corporation 2006. 1.3 What is the PCI Express AER Driver? diff --git a/Documentation/pnp.txt b/Documentation/pnp.txt index 28037aa1846c..481faf515d53 100644 --- a/Documentation/pnp.txt +++ b/Documentation/pnp.txt @@ -140,7 +140,7 @@ Plug and Play but it is planned to be in the near future. Requirements for a Linux PnP protocol: 1.) the protocol must use EISA IDs 2.) the protocol must inform the PnP Layer of a devices current configuration -- the ability to set resources is optional but prefered. +- the ability to set resources is optional but preferred. The following are PnP protocol related functions: diff --git a/Documentation/power/swsusp.txt b/Documentation/power/swsusp.txt index c55bd5079b90..5b8d6953f05e 100644 --- a/Documentation/power/swsusp.txt +++ b/Documentation/power/swsusp.txt @@ -48,7 +48,7 @@ before suspend (it is limited to 500 MB by default). Article about goals and implementation of Software Suspend for Linux ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ -Author: G‚ábor Kuti +Author: G‚ábor Kuti Last revised: 2003-10-20 by Pavel Machek Idea and goals to achieve diff --git a/Documentation/power/userland-swsusp.txt b/Documentation/power/userland-swsusp.txt index 000556c932e9..e00c6cf09e85 100644 --- a/Documentation/power/userland-swsusp.txt +++ b/Documentation/power/userland-swsusp.txt @@ -93,21 +93,23 @@ SNAPSHOT_S2RAM - suspend to RAM; using this call causes the kernel to to resume the system from RAM if there's enough battery power or restore its state on the basis of the saved suspend image otherwise) -SNAPSHOT_PMOPS - enable the usage of the pmops->prepare, pmops->enter and - pmops->finish methods (the in-kernel swsusp knows these as the "platform - method") which are needed on many machines to (among others) speed up - the resume by letting the BIOS skip some steps or to let the system - recognise the correct state of the hardware after the resume (in - particular on many machines this ensures that unplugged AC - adapters get correctly detected and that kacpid does not run wild after - the resume). The last ioctl() argument can take one of the three - values, defined in kernel/power/power.h: +SNAPSHOT_PMOPS - enable the usage of the hibernation_ops->prepare, + hibernate_ops->enter and hibernation_ops->finish methods (the in-kernel + swsusp knows these as the "platform method") which are needed on many + machines to (among others) speed up the resume by letting the BIOS skip + some steps or to let the system recognise the correct state of the + hardware after the resume (in particular on many machines this ensures + that unplugged AC adapters get correctly detected and that kacpid does + not run wild after the resume). The last ioctl() argument can take one + of the three values, defined in kernel/power/power.h: PMOPS_PREPARE - make the kernel carry out the - pm_ops->prepare(PM_SUSPEND_DISK) operation + hibernation_ops->prepare() operation PMOPS_ENTER - make the kernel power off the system by calling - pm_ops->enter(PM_SUSPEND_DISK) + hibernation_ops->enter() PMOPS_FINISH - make the kernel carry out the - pm_ops->finish(PM_SUSPEND_DISK) operation + hibernation_ops->finish() operation + Note that the actual constants are misnamed because they surface + internal kernel implementation details that have changed. The device's read() operation can be used to transfer the snapshot image from the kernel. It has the following limitations: diff --git a/Documentation/powerpc/booting-without-of.txt b/Documentation/powerpc/booting-without-of.txt index d4bfae75c946..b49ce169a63a 100644 --- a/Documentation/powerpc/booting-without-of.txt +++ b/Documentation/powerpc/booting-without-of.txt @@ -1444,7 +1444,7 @@ platforms are moved over to use the flattened-device-tree model. Basically, it is a bus of devices, that could act more or less as a complete entity (UCC, USB etc ). All of them should be siblings on the "root" qe node, using the common properties from there. - The description below applies to the the qe of MPC8360 and + The description below applies to the qe of MPC8360 and more nodes and properties would be extended in the future. i) Root QE device @@ -1633,7 +1633,7 @@ platforms are moved over to use the flattened-device-tree model. - assignment : function number of the pin according to the Pin Assignment tables in User Manual. Each pin can have up to 4 possible functions in QE and two options for CPM. - - has_irq : indicates if the pin is used as source of exteral + - has_irq : indicates if the pin is used as source of external interrupts. Example: diff --git a/Documentation/s390/Debugging390.txt b/Documentation/s390/Debugging390.txt index 0993969609cf..d30a281c570f 100644 --- a/Documentation/s390/Debugging390.txt +++ b/Documentation/s390/Debugging390.txt @@ -2209,7 +2209,7 @@ Breakpoint 2 at 0x4d87a4: file top.c, line 2609. #3 0x5167e6 in readline_internal_char () at readline.c:454 #4 0x5168ee in readline_internal_charloop () at readline.c:507 #5 0x51692c in readline_internal () at readline.c:521 -#6 0x5164fe in readline (prompt=0x7ffff810 "\177ÿøx\177ÿ÷Ø\177ÿøxÀ") +#6 0x5164fe in readline (prompt=0x7ffff810 "\177ÂÿÂøx\177ÂÿÂ÷ÂØ\177ÂÿÂøxÂÀ") at readline.c:349 #7 0x4d7a8a in command_line_input (prrompt=0x564420 "(gdb) ", repeat=1, annotation_suffix=0x4d6b44 "prompt") at top.c:2091 diff --git a/Documentation/scsi/aha152x.txt b/Documentation/scsi/aha152x.txt index 2ce022cec9be..29ce6d87e451 100644 --- a/Documentation/scsi/aha152x.txt +++ b/Documentation/scsi/aha152x.txt @@ -1,7 +1,7 @@ $Id: README.aha152x,v 1.2 1999/12/25 15:32:30 fischer Exp fischer $ Adaptec AHA-1520/1522 SCSI driver for Linux (aha152x) -Copyright 1993-1999 Jürgen Fischer <fischer@norbit.de> +Copyright 1993-1999 Jürgen Fischer <fischer@norbit.de> TC1550 patches by Luuk van Dijk (ldz@xs4all.nl) diff --git a/Documentation/scsi/aic7xxx.txt b/Documentation/scsi/aic7xxx.txt index 9b894f116d95..5f34d2ba69b4 100644 --- a/Documentation/scsi/aic7xxx.txt +++ b/Documentation/scsi/aic7xxx.txt @@ -40,7 +40,7 @@ The following information is available in this file: 2. Multi-function Twin Channel Device - Two controllers on one chip. 3. Command Channel Secondary DMA Engine - Allows scatter gather list and SCB prefetch. - 4. 64 Byte SCB Support - Allows disconnected, unttagged request table + 4. 64 Byte SCB Support - Allows disconnected, untagged request table for all possible target/lun combinations. 5. Block Move Instruction Support - Doubles the speed of certain sequencer operations. diff --git a/Documentation/scsi/aic7xxx_old.txt b/Documentation/scsi/aic7xxx_old.txt index 05667e7308d4..7bd210ab45a1 100644 --- a/Documentation/scsi/aic7xxx_old.txt +++ b/Documentation/scsi/aic7xxx_old.txt @@ -356,7 +356,7 @@ linux-1.1.x and fairly stable since linux-1.2.x, and are also in FreeBSD or enable Tagged Command Queueing (TCQ) on specific devices. As of driver version 5.1.11, TCQ is now either on or off by default according to the setting you choose during the make config process. - In order to en/disable TCQ for certian devices at boot time, a user + In order to en/disable TCQ for certain devices at boot time, a user may use this boot param. The driver will then parse this message out and en/disable the specific device entries that are present based upon the value given. The param line is parsed in the following manner: diff --git a/Documentation/scsi/ncr53c8xx.txt b/Documentation/scsi/ncr53c8xx.txt index 88ef88b949f7..39d409a8efe5 100644 --- a/Documentation/scsi/ncr53c8xx.txt +++ b/Documentation/scsi/ncr53c8xx.txt @@ -1260,7 +1260,7 @@ then the request of the IRQ obviously will not succeed for all the drivers. 15.1 Problem tracking Most SCSI problems are due to a non conformant SCSI bus or to buggy -devices. If infortunately you have SCSI problems, you can check the +devices. If unfortunately you have SCSI problems, you can check the following things: - SCSI bus cables diff --git a/Documentation/scsi/st.txt b/Documentation/scsi/st.txt index 3c12422f7f41..b7be95b5bd24 100644 --- a/Documentation/scsi/st.txt +++ b/Documentation/scsi/st.txt @@ -1,5 +1,5 @@ This file contains brief information about the SCSI tape driver. -The driver is currently maintained by Kai Mäkisara (email +The driver is currently maintained by Kai Mäkisara (email Kai.Makisara@kolumbus.fi) Last modified: Mon Mar 7 21:14:44 2005 by kai.makisara diff --git a/Documentation/scsi/sym53c8xx_2.txt b/Documentation/scsi/sym53c8xx_2.txt index 2c1745a9df00..3d9f06bb3d00 100644 --- a/Documentation/scsi/sym53c8xx_2.txt +++ b/Documentation/scsi/sym53c8xx_2.txt @@ -587,7 +587,7 @@ devices, ... may cause a SCSI signal to be wrong when te driver reads it. 15.1 Problem tracking Most SCSI problems are due to a non conformant SCSI bus or too buggy -devices. If infortunately you have SCSI problems, you can check the +devices. If unfortunately you have SCSI problems, you can check the following things: - SCSI bus cables diff --git a/Documentation/scsi/tmscsim.txt b/Documentation/scsi/tmscsim.txt index 8b2168aa4fc7..61c0531e044a 100644 --- a/Documentation/scsi/tmscsim.txt +++ b/Documentation/scsi/tmscsim.txt @@ -426,7 +426,7 @@ Thanks to Linus Torvalds, Alan Cox, the FSF people, the XFree86 team and all the others for the wonderful OS and software. Thanks to C.L. Huang and Philip Giang (Tekram) for the initial driver release and support. -Thanks to Doug Ledford, Gérard Roudier for support with SCSI coding. +Thanks to Doug Ledford, Gérard Roudier for support with SCSI coding. Thanks to a lot of people (espec. Chiaki Ishikawa, Andreas Haumer, Hubert Tonneau) for intensively testing the driver (and even risking data loss doing this during early revisions). diff --git a/Documentation/sonypi.txt b/Documentation/sonypi.txt index c1237a925505..4857acfc50f1 100644 --- a/Documentation/sonypi.txt +++ b/Documentation/sonypi.txt @@ -1,7 +1,7 @@ Sony Programmable I/O Control Device Driver Readme -------------------------------------------------- Copyright (C) 2001-2004 Stelian Pop <stelian@popies.net> - Copyright (C) 2001-2002 Alcôve <www.alcove.com> + Copyright (C) 2001-2002 Alcôve <www.alcove.com> Copyright (C) 2001 Michael Ashley <m.ashley@unsw.edu.au> Copyright (C) 2001 Junichi Morita <jun1m@mars.dti.ne.jp> Copyright (C) 2000 Takaya Kinjo <t-kinjo@tc4.so-net.ne.jp> diff --git a/Documentation/sound/oss/mwave b/Documentation/sound/oss/mwave index 858334bb46b0..5fbcb1609275 100644 --- a/Documentation/sound/oss/mwave +++ b/Documentation/sound/oss/mwave @@ -163,7 +163,7 @@ OR the Default= line COULD be Default=SBPRO Reboot to Windows 95 and choose Linux. When booted, use sndconfig to configure -the sound modules and voilà - ThinkPad sound with Linux. +the sound modules and voilà - ThinkPad sound with Linux. Now the gotchas - you can either have CD sound OR Mixers but not both. That's a problem with the SB1.5 (CD sound) or SBPRO (Mixers) settings. No one knows why diff --git a/Documentation/sysctl/kernel.txt b/Documentation/sysctl/kernel.txt index 5922e84d9133..111fd28727ec 100644 --- a/Documentation/sysctl/kernel.txt +++ b/Documentation/sysctl/kernel.txt @@ -221,14 +221,14 @@ Controls the kernel's behaviour when an oops or BUG is encountered. 0: try to continue operation -1: panic immediatly. If the `panic' sysctl is also non-zero then the +1: panic immediately. If the `panic' sysctl is also non-zero then the machine will be rebooted. ============================================================== pid_max: -PID allocation wrap value. When the kenrel's next PID value +PID allocation wrap value. When the kernel's next PID value reaches this value, it wraps back to a minimum PID value. PIDs of value pid_max or larger are not allocated. diff --git a/Documentation/usb/CREDITS b/Documentation/usb/CREDITS index 27a721635f92..67c59cdc9959 100644 --- a/Documentation/usb/CREDITS +++ b/Documentation/usb/CREDITS @@ -65,7 +65,7 @@ THANKS file in Inaky's driver): will sell keyboards to some of the 3 million (at least) Linux users. - - Many thanks to ing büro h doran [http://www.ibhdoran.com]! + - Many thanks to ing büro h doran [http://www.ibhdoran.com]! It was almost impossible to get a PC backplate USB connector for the motherboard here at Europe (mine, home-made, was quite lousy :). Now I know where to acquire nice USB stuff! diff --git a/Documentation/usb/usb-serial.txt b/Documentation/usb/usb-serial.txt index b18e86a22506..5b635ae84944 100644 --- a/Documentation/usb/usb-serial.txt +++ b/Documentation/usb/usb-serial.txt @@ -45,9 +45,9 @@ ConnectTech WhiteHEAT 4 port converter Connect Tech's Support Department at support@connecttech.com -HandSpring Visor, Palm USB, and Clié USB driver +HandSpring Visor, Palm USB, and Clié USB driver - This driver works with all HandSpring USB, Palm USB, and Sony Clié USB + This driver works with all HandSpring USB, Palm USB, and Sony Clié USB devices. Only when the device tries to connect to the host, will the device show @@ -69,7 +69,7 @@ HandSpring Visor, Palm USB, and Clié USB driver the port to use for the HotSync transfer. The "Generic" port can be used for other device communication, such as a PPP link. - For some Sony Clié devices, /dev/ttyUSB0 must be used to talk to the + For some Sony Clié devices, /dev/ttyUSB0 must be used to talk to the device. This is true for all OS version 3.5 devices, and most devices that have had a flash upgrade to a newer version of the OS. See the kernel system log for information on which is the correct port to use. diff --git a/Documentation/video4linux/README.pvrusb2 b/Documentation/video4linux/README.pvrusb2 index a4b7ae800866..a747200fe67c 100644 --- a/Documentation/video4linux/README.pvrusb2 +++ b/Documentation/video4linux/README.pvrusb2 @@ -8,7 +8,7 @@ Background: This driver is intended for the "Hauppauge WinTV PVR USB 2.0", which is a USB 2.0 hosted TV Tuner. This driver is a work in progress. - Its history started with the reverse-engineering effort by Björn + Its history started with the reverse-engineering effort by Björn Danielsson <pvrusb2@dax.nu> whose web page can be found here: http://pvrusb2.dax.nu/ diff --git a/Documentation/video4linux/Zoran b/Documentation/video4linux/Zoran index 85c575ac4fb9..295462b2317a 100644 --- a/Documentation/video4linux/Zoran +++ b/Documentation/video4linux/Zoran @@ -242,7 +242,7 @@ can generate: PAL , NTSC , SECAM Conexant bt866 TV encoder is used in AVS6EYES, and -can generate: NTSC/PAL, PALM, PALN +can generate: NTSC/PAL, PALÂM, PALÂN The adv717x, should be able to produce PAL N. But you find nothing PAL N specific in the registers. Seem that you have to reuse a other standard diff --git a/Documentation/video4linux/meye.txt b/Documentation/video4linux/meye.txt index 5e51c59bf2b0..bf3af5fe558f 100644 --- a/Documentation/video4linux/meye.txt +++ b/Documentation/video4linux/meye.txt @@ -1,7 +1,7 @@ Vaio Picturebook Motion Eye Camera Driver Readme ------------------------------------------------ Copyright (C) 2001-2004 Stelian Pop <stelian@popies.net> - Copyright (C) 2001-2002 Alcôve <www.alcove.com> + Copyright (C) 2001-2002 Alcôve <www.alcove.com> Copyright (C) 2000 Andrew Tridgell <tridge@samba.org> This driver enable the use of video4linux compatible applications with the diff --git a/Documentation/video4linux/ov511.txt b/Documentation/video4linux/ov511.txt index 79af610d4ba5..b3326b167ada 100644 --- a/Documentation/video4linux/ov511.txt +++ b/Documentation/video4linux/ov511.txt @@ -195,11 +195,11 @@ MODULE PARAMETERS: NAME: bandingfilter TYPE: integer (Boolean) DEFAULT: 0 (off) - DESC: Enables the sensor´s banding filter exposure algorithm. This reduces + DESC: Enables the sensor´s banding filter exposure algorithm. This reduces or stabilizes the "banding" caused by some artificial light sources (especially fluorescent). You might have to set lightfreq correctly for this to work right. As an added bonus, this sometimes makes it - possible to capture your monitor´s output. + possible to capture your monitor´s output. NAME: fastset TYPE: integer (Boolean) diff --git a/Documentation/vm/slabinfo.c b/Documentation/vm/slabinfo.c index 41710ccf3a29..686a8e04a4f3 100644 --- a/Documentation/vm/slabinfo.c +++ b/Documentation/vm/slabinfo.c @@ -16,6 +16,7 @@ #include <stdarg.h> #include <getopt.h> #include <regex.h> +#include <errno.h> #define MAX_SLABS 500 #define MAX_ALIASES 500 @@ -41,12 +42,15 @@ struct aliasinfo { } aliasinfo[MAX_ALIASES]; int slabs = 0; +int actual_slabs = 0; int aliases = 0; int alias_targets = 0; int highest_node = 0; char buffer[4096]; +int show_empty = 0; +int show_report = 0; int show_alias = 0; int show_slab = 0; int skip_zero = 1; @@ -59,6 +63,15 @@ int show_inverted = 0; int show_single_ref = 0; int show_totals = 0; int sort_size = 0; +int set_debug = 0; +int show_ops = 0; + +/* Debug options */ +int sanity = 0; +int redzone = 0; +int poison = 0; +int tracking = 0; +int tracing = 0; int page_size; @@ -76,20 +89,33 @@ void fatal(const char *x, ...) void usage(void) { - printf("slabinfo [-ahnpvtsz] [slab-regexp]\n" + printf("slabinfo 5/7/2007. (c) 2007 sgi. clameter@sgi.com\n\n" + "slabinfo [-ahnpvtsz] [-d debugopts] [slab-regexp]\n" "-a|--aliases Show aliases\n" + "-d<options>|--debug=<options> Set/Clear Debug options\n" + "-e|--empty Show empty slabs\n" + "-f|--first-alias Show first alias\n" "-h|--help Show usage information\n" + "-i|--inverted Inverted list\n" + "-l|--slabs Show slabs\n" "-n|--numa Show NUMA information\n" + "-o|--ops Show kmem_cache_ops\n" "-s|--shrink Shrink slabs\n" - "-v|--validate Validate slabs\n" + "-r|--report Detailed report on single slabs\n" + "-S|--Size Sort by size\n" "-t|--tracking Show alloc/free information\n" "-T|--Totals Show summary information\n" - "-l|--slabs Show slabs\n" - "-S|--Size Sort by size\n" + "-v|--validate Validate slabs\n" "-z|--zero Include empty slabs\n" - "-f|--first-alias Show first alias\n" - "-i|--inverted Inverted list\n" "-1|--1ref Single reference\n" + "\nValid debug options (FZPUT may be combined)\n" + "a / A Switch on all debug options (=FZUP)\n" + "- Switch off all debug options\n" + "f / F Sanity Checks (SLAB_DEBUG_FREE)\n" + "z / Z Redzoning\n" + "p / P Poisoning\n" + "u / U Tracking\n" + "t / T Tracing\n" ); } @@ -143,11 +169,10 @@ unsigned long get_obj_and_str(char *name, char **x) void set_obj(struct slabinfo *s, char *name, int n) { char x[100]; + FILE *f; sprintf(x, "%s/%s", s->name, name); - - FILE *f = fopen(x, "w"); - + f = fopen(x, "w"); if (!f) fatal("Cannot write to %s\n", x); @@ -155,6 +180,26 @@ void set_obj(struct slabinfo *s, char *name, int n) fclose(f); } +unsigned long read_slab_obj(struct slabinfo *s, char *name) +{ + char x[100]; + FILE *f; + int l; + + sprintf(x, "%s/%s", s->name, name); + f = fopen(x, "r"); + if (!f) { + buffer[0] = 0; + l = 0; + } else { + l = fread(buffer, 1, sizeof(buffer), f); + buffer[l] = 0; + fclose(f); + } + return l; +} + + /* * Put a size string together */ @@ -226,7 +271,7 @@ int line = 0; void first_line(void) { - printf("Name Objects Objsize Space " + printf("Name Objects Objsize Space " "Slabs/Part/Cpu O/S O %%Fr %%Ef Flg\n"); } @@ -246,10 +291,7 @@ struct aliasinfo *find_one_alias(struct slabinfo *find) return best; } } - if (best) - return best; - fatal("Cannot find alias for %s\n", find->name); - return NULL; + return best; } unsigned long slab_size(struct slabinfo *s) @@ -257,6 +299,126 @@ unsigned long slab_size(struct slabinfo *s) return s->slabs * (page_size << s->order); } +void slab_numa(struct slabinfo *s, int mode) +{ + int node; + + if (strcmp(s->name, "*") == 0) + return; + + if (!highest_node) { + printf("\n%s: No NUMA information available.\n", s->name); + return; + } + + if (skip_zero && !s->slabs) + return; + + if (!line) { + printf("\n%-21s:", mode ? "NUMA nodes" : "Slab"); + for(node = 0; node <= highest_node; node++) + printf(" %4d", node); + printf("\n----------------------"); + for(node = 0; node <= highest_node; node++) + printf("-----"); + printf("\n"); + } + printf("%-21s ", mode ? "All slabs" : s->name); + for(node = 0; node <= highest_node; node++) { + char b[20]; + + store_size(b, s->numa[node]); + printf(" %4s", b); + } + printf("\n"); + if (mode) { + printf("%-21s ", "Partial slabs"); + for(node = 0; node <= highest_node; node++) { + char b[20]; + + store_size(b, s->numa_partial[node]); + printf(" %4s", b); + } + printf("\n"); + } + line++; +} + +void show_tracking(struct slabinfo *s) +{ + printf("\n%s: Kernel object allocation\n", s->name); + printf("-----------------------------------------------------------------------\n"); + if (read_slab_obj(s, "alloc_calls")) + printf(buffer); + else + printf("No Data\n"); + + printf("\n%s: Kernel object freeing\n", s->name); + printf("------------------------------------------------------------------------\n"); + if (read_slab_obj(s, "free_calls")) + printf(buffer); + else + printf("No Data\n"); + +} + +void ops(struct slabinfo *s) +{ + if (strcmp(s->name, "*") == 0) + return; + + if (read_slab_obj(s, "ops")) { + printf("\n%s: kmem_cache operations\n", s->name); + printf("--------------------------------------------\n"); + printf(buffer); + } else + printf("\n%s has no kmem_cache operations\n", s->name); +} + +const char *onoff(int x) +{ + if (x) + return "On "; + return "Off"; +} + +void report(struct slabinfo *s) +{ + if (strcmp(s->name, "*") == 0) + return; + printf("\nSlabcache: %-20s Aliases: %2d Order : %2d\n", s->name, s->aliases, s->order); + if (s->hwcache_align) + printf("** Hardware cacheline aligned\n"); + if (s->cache_dma) + printf("** Memory is allocated in a special DMA zone\n"); + if (s->destroy_by_rcu) + printf("** Slabs are destroyed via RCU\n"); + if (s->reclaim_account) + printf("** Reclaim accounting active\n"); + + printf("\nSizes (bytes) Slabs Debug Memory\n"); + printf("------------------------------------------------------------------------\n"); + printf("Object : %7d Total : %7ld Sanity Checks : %s Total: %7ld\n", + s->object_size, s->slabs, onoff(s->sanity_checks), + s->slabs * (page_size << s->order)); + printf("SlabObj: %7d Full : %7ld Redzoning : %s Used : %7ld\n", + s->slab_size, s->slabs - s->partial - s->cpu_slabs, + onoff(s->red_zone), s->objects * s->object_size); + printf("SlabSiz: %7d Partial: %7ld Poisoning : %s Loss : %7ld\n", + page_size << s->order, s->partial, onoff(s->poison), + s->slabs * (page_size << s->order) - s->objects * s->object_size); + printf("Loss : %7d CpuSlab: %7d Tracking : %s Lalig: %7ld\n", + s->slab_size - s->object_size, s->cpu_slabs, onoff(s->store_user), + (s->slab_size - s->object_size) * s->objects); + printf("Align : %7d Objects: %7d Tracing : %s Lpadd: %7ld\n", + s->align, s->objs_per_slab, onoff(s->trace), + ((page_size << s->order) - s->objs_per_slab * s->slab_size) * + s->slabs); + + ops(s); + show_tracking(s); + slab_numa(s, 1); +} void slabcache(struct slabinfo *s) { @@ -265,7 +427,18 @@ void slabcache(struct slabinfo *s) char flags[20]; char *p = flags; - if (skip_zero && !s->slabs) + if (strcmp(s->name, "*") == 0) + return; + + if (actual_slabs == 1) { + report(s); + return; + } + + if (skip_zero && !show_empty && !s->slabs) + return; + + if (show_empty && s->slabs) return; store_size(size_str, slab_size(s)); @@ -303,48 +476,128 @@ void slabcache(struct slabinfo *s) flags); } -void slab_numa(struct slabinfo *s) +/* + * Analyze debug options. Return false if something is amiss. + */ +int debug_opt_scan(char *opt) { - int node; + if (!opt || !opt[0] || strcmp(opt, "-") == 0) + return 1; + + if (strcasecmp(opt, "a") == 0) { + sanity = 1; + poison = 1; + redzone = 1; + tracking = 1; + return 1; + } - if (!highest_node) - fatal("No NUMA information available.\n"); + for ( ; *opt; opt++) + switch (*opt) { + case 'F' : case 'f': + if (sanity) + return 0; + sanity = 1; + break; + case 'P' : case 'p': + if (poison) + return 0; + poison = 1; + break; - if (skip_zero && !s->slabs) - return; + case 'Z' : case 'z': + if (redzone) + return 0; + redzone = 1; + break; - if (!line) { - printf("\nSlab Node "); - for(node = 0; node <= highest_node; node++) - printf(" %4d", node); - printf("\n----------------------"); - for(node = 0; node <= highest_node; node++) - printf("-----"); - printf("\n"); - } - printf("%-21s ", s->name); - for(node = 0; node <= highest_node; node++) { - char b[20]; + case 'U' : case 'u': + if (tracking) + return 0; + tracking = 1; + break; - store_size(b, s->numa[node]); - printf(" %4s", b); - } - printf("\n"); - line++; + case 'T' : case 't': + if (tracing) + return 0; + tracing = 1; + break; + default: + return 0; + } + return 1; } -void show_tracking(struct slabinfo *s) +int slab_empty(struct slabinfo *s) { - printf("\n%s: Calls to allocate a slab object\n", s->name); - printf("---------------------------------------------------\n"); - if (read_obj("alloc_calls")) - printf(buffer); + if (s->objects > 0) + return 0; - printf("%s: Calls to free a slab object\n", s->name); - printf("-----------------------------------------------\n"); - if (read_obj("free_calls")) - printf(buffer); + /* + * We may still have slabs even if there are no objects. Shrinking will + * remove them. + */ + if (s->slabs != 0) + set_obj(s, "shrink", 1); + return 1; +} + +void slab_debug(struct slabinfo *s) +{ + if (sanity && !s->sanity_checks) { + set_obj(s, "sanity", 1); + } + if (!sanity && s->sanity_checks) { + if (slab_empty(s)) + set_obj(s, "sanity", 0); + else + fprintf(stderr, "%s not empty cannot disable sanity checks\n", s->name); + } + if (redzone && !s->red_zone) { + if (slab_empty(s)) + set_obj(s, "red_zone", 1); + else + fprintf(stderr, "%s not empty cannot enable redzoning\n", s->name); + } + if (!redzone && s->red_zone) { + if (slab_empty(s)) + set_obj(s, "red_zone", 0); + else + fprintf(stderr, "%s not empty cannot disable redzoning\n", s->name); + } + if (poison && !s->poison) { + if (slab_empty(s)) + set_obj(s, "poison", 1); + else + fprintf(stderr, "%s not empty cannot enable poisoning\n", s->name); + } + if (!poison && s->poison) { + if (slab_empty(s)) + set_obj(s, "poison", 0); + else + fprintf(stderr, "%s not empty cannot disable poisoning\n", s->name); + } + if (tracking && !s->store_user) { + if (slab_empty(s)) + set_obj(s, "store_user", 1); + else + fprintf(stderr, "%s not empty cannot enable tracking\n", s->name); + } + if (!tracking && s->store_user) { + if (slab_empty(s)) + set_obj(s, "store_user", 0); + else + fprintf(stderr, "%s not empty cannot disable tracking\n", s->name); + } + if (tracing && !s->trace) { + if (slabs == 1) + set_obj(s, "trace", 1); + else + fprintf(stderr, "%s can only enable trace for one slab at a time\n", s->name); + } + if (!tracing && s->trace) + set_obj(s, "trace", 1); } void totals(void) @@ -673,7 +926,7 @@ void link_slabs(void) for (a = aliasinfo; a < aliasinfo + aliases; a++) { - for(s = slabinfo; s < slabinfo + slabs; s++) + for (s = slabinfo; s < slabinfo + slabs; s++) if (strcmp(a->ref, s->name) == 0) { a->slab = s; s->refs++; @@ -704,7 +957,7 @@ void alias(void) continue; } } - printf("\n%-20s <- %s", a->slab->name, a->name); + printf("\n%-12s <- %s", a->slab->name, a->name); active = a->slab->name; } else @@ -729,7 +982,12 @@ void rename_slabs(void) a = find_one_alias(s); - s->name = a->name; + if (a) + s->name = a->name; + else { + s->name = "*"; + actual_slabs--; + } } } @@ -748,11 +1006,14 @@ void read_slab_dir(void) char *t; int count; + if (chdir("/sys/slab")) + fatal("SYSFS support for SLUB not active\n"); + dir = opendir("."); while ((de = readdir(dir))) { if (de->d_name[0] == '.' || - slab_mismatch(de->d_name)) - continue; + (de->d_name[0] != ':' && slab_mismatch(de->d_name))) + continue; switch (de->d_type) { case DT_LNK: alias->name = strdup(de->d_name); @@ -807,6 +1068,7 @@ void read_slab_dir(void) } closedir(dir); slabs = slab - slabinfo; + actual_slabs = slabs; aliases = alias - aliasinfo; if (slabs > MAX_SLABS) fatal("Too many slabs\n"); @@ -825,34 +1087,37 @@ void output_slabs(void) if (show_numa) - slab_numa(slab); - else - if (show_track) + slab_numa(slab, 0); + else if (show_track) show_tracking(slab); - else - if (validate) + else if (validate) slab_validate(slab); - else - if (shrink) + else if (shrink) slab_shrink(slab); - else { - if (show_slab) - slabcache(slab); - } + else if (set_debug) + slab_debug(slab); + else if (show_ops) + ops(slab); + else if (show_slab) + slabcache(slab); } } struct option opts[] = { { "aliases", 0, NULL, 'a' }, - { "slabs", 0, NULL, 'l' }, - { "numa", 0, NULL, 'n' }, - { "zero", 0, NULL, 'z' }, - { "help", 0, NULL, 'h' }, - { "validate", 0, NULL, 'v' }, + { "debug", 2, NULL, 'd' }, + { "empty", 0, NULL, 'e' }, { "first-alias", 0, NULL, 'f' }, + { "help", 0, NULL, 'h' }, + { "inverted", 0, NULL, 'i'}, + { "numa", 0, NULL, 'n' }, + { "ops", 0, NULL, 'o' }, + { "report", 0, NULL, 'r' }, { "shrink", 0, NULL, 's' }, + { "slabs", 0, NULL, 'l' }, { "track", 0, NULL, 't'}, - { "inverted", 0, NULL, 'i'}, + { "validate", 0, NULL, 'v' }, + { "zero", 0, NULL, 'z' }, { "1ref", 0, NULL, '1'}, { NULL, 0, NULL, 0 } }; @@ -864,10 +1129,9 @@ int main(int argc, char *argv[]) char *pattern_source; page_size = getpagesize(); - if (chdir("/sys/slab")) - fatal("This kernel does not have SLUB support.\n"); - while ((c = getopt_long(argc, argv, "afhil1npstvzTS", opts, NULL)) != -1) + while ((c = getopt_long(argc, argv, "ad::efhil1noprstvzTS", + opts, NULL)) != -1) switch(c) { case '1': show_single_ref = 1; @@ -875,6 +1139,14 @@ int main(int argc, char *argv[]) case 'a': show_alias = 1; break; + case 'd': + set_debug = 1; + if (!debug_opt_scan(optarg)) + fatal("Invalid debug option '%s'\n", optarg); + break; + case 'e': + show_empty = 1; + break; case 'f': show_first_alias = 1; break; @@ -887,6 +1159,12 @@ int main(int argc, char *argv[]) case 'n': show_numa = 1; break; + case 'o': + show_ops = 1; + break; + case 'r': + show_report = 1; + break; case 's': shrink = 1; break; @@ -914,8 +1192,8 @@ int main(int argc, char *argv[]) } - if (!show_slab && !show_alias && !show_track - && !validate && !shrink) + if (!show_slab && !show_alias && !show_track && !show_report + && !validate && !shrink && !set_debug && !show_ops) show_slab = 1; if (argc > optind) diff --git a/MAINTAINERS b/MAINTAINERS index 41a4b477c576..3b46f43c338b 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -1038,6 +1038,8 @@ S: Maintained CONEXANT ACCESSRUNNER USB DRIVER P: Simon Arlott M: cxacru@fire.lp0.eu +L: accessrunner-general@lists.sourceforge.net +W: http://accessrunner.sourceforge.net/ S: Maintained CORETEMP HARDWARE MONITORING DRIVER @@ -2800,7 +2802,7 @@ L: linux-abi-devel@lists.sourceforge.net S: Maintained PHRAM MTD DRIVER -P: Jörn Engel +P: Jörn Engel M: joern@wh.fh-wedel.de L: linux-mtd@lists.infradead.org S: Maintained @@ -3074,7 +3076,7 @@ T: git kernel.org:/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6.git S: Maintained SCSI TAPE DRIVER -P: Kai Mäkisara +P: Kai Mäkisara M: Kai.Makisara@kolumbus.fi L: linux-scsi@vger.kernel.org S: Maintained diff --git a/arch/arm/mach-at91/Kconfig b/arch/arm/mach-at91/Kconfig index e238ad8cfd8f..018d637f87fc 100644 --- a/arch/arm/mach-at91/Kconfig +++ b/arch/arm/mach-at91/Kconfig @@ -107,7 +107,7 @@ config ARCH_AT91SAM9260_SAM9XE depends on ARCH_AT91SAM9260 help Select this if you are using Atmel's AT91SAM9XE System-on-Chip. - They are basicaly AT91SAM9260s with various sizes of embedded Flash. + They are basically AT91SAM9260s with various sizes of embedded Flash. comment "AT91SAM9260 / AT91SAM9XE Board Type" diff --git a/arch/arm/mach-omap1/Kconfig b/arch/arm/mach-omap1/Kconfig index 8781aaeb576b..c7e229b00f6e 100644 --- a/arch/arm/mach-omap1/Kconfig +++ b/arch/arm/mach-omap1/Kconfig @@ -84,7 +84,7 @@ config MACH_OMAP_PALMTE Support for the Palm Tungsten E PDA. Currently only the LCD panel is supported. To boot the kernel, you'll need a PalmOS compatible bootloader; check out http://palmtelinux.sourceforge.net for more - informations. + information. Say Y here if you have such a PDA, say NO otherwise. config MACH_NOKIA770 diff --git a/arch/arm/mach-s3c2410/sleep.S b/arch/arm/mach-s3c2410/sleep.S index 637aaba65390..d1eeed2ad47c 100644 --- a/arch/arm/mach-s3c2410/sleep.S +++ b/arch/arm/mach-s3c2410/sleep.S @@ -1,4 +1,4 @@ -/* linux/arch/arm/mach-s3c2410/s3c2410-sleep.S +/* linux/arch/arm/mach-s3c2410/sleep.S * * Copyright (c) 2004 Simtec Electronics * Ben Dooks <ben@simtec.co.uk> diff --git a/arch/arm/plat-s3c24xx/sleep.S b/arch/arm/plat-s3c24xx/sleep.S index 435349dc3243..7b7ae790b00d 100644 --- a/arch/arm/plat-s3c24xx/sleep.S +++ b/arch/arm/plat-s3c24xx/sleep.S @@ -1,4 +1,4 @@ -/* linux/arch/arm/mach-s3c2410/sleep.S +/* linux/arch/arm/plat-s3c24xx/sleep.S * * Copyright (c) 2004 Simtec Electronics * Ben Dooks <ben@simtec.co.uk> diff --git a/arch/avr32/Makefile b/arch/avr32/Makefile index 6115fc1f0cfa..dc6bc01f232c 100644 --- a/arch/avr32/Makefile +++ b/arch/avr32/Makefile @@ -16,7 +16,7 @@ AFLAGS += -mrelax -mno-pic CFLAGS_MODULE += -mno-relax LDFLAGS_vmlinux += --relax -cpuflags-$(CONFIG_CPU_AP7000) += -mcpu=ap7000 +cpuflags-$(CONFIG_CPU_AT32AP7000) += -mcpu=ap7000 CFLAGS += $(cpuflags-y) AFLAGS += $(cpuflags-y) diff --git a/arch/avr32/kernel/process.c b/arch/avr32/kernel/process.c index 4e4181ed1c6d..13f988402613 100644 --- a/arch/avr32/kernel/process.c +++ b/arch/avr32/kernel/process.c @@ -330,13 +330,13 @@ int copy_thread(int nr, unsigned long clone_flags, unsigned long usp, { struct pt_regs *childregs; - childregs = ((struct pt_regs *)(THREAD_SIZE + (unsigned long)p->thread_info)) - 1; + childregs = ((struct pt_regs *)(THREAD_SIZE + (unsigned long)task_stack_page(p))) - 1; *childregs = *regs; if (user_mode(regs)) childregs->sp = usp; else - childregs->sp = (unsigned long)p->thread_info + THREAD_SIZE; + childregs->sp = (unsigned long)task_stack_page(p) + THREAD_SIZE; childregs->r12 = 0; /* Set return value for child */ @@ -403,7 +403,7 @@ unsigned long get_wchan(struct task_struct *p) if (!p || p == current || p->state == TASK_RUNNING) return 0; - stack_page = (unsigned long)p->thread_info; + stack_page = (unsigned long)task_stack_page(p); BUG_ON(!stack_page); /* diff --git a/arch/avr32/kernel/ptrace.c b/arch/avr32/kernel/ptrace.c index 8ac74dddbbde..3c36c2d16148 100644 --- a/arch/avr32/kernel/ptrace.c +++ b/arch/avr32/kernel/ptrace.c @@ -24,7 +24,7 @@ static struct pt_regs *get_user_regs(struct task_struct *tsk) { - return (struct pt_regs *)((unsigned long) tsk->thread_info + + return (struct pt_regs *)((unsigned long)task_stack_page(tsk) + THREAD_SIZE - sizeof(struct pt_regs)); } diff --git a/arch/avr32/kernel/syscall_table.S b/arch/avr32/kernel/syscall_table.S index 7c279586fbba..07f6a6fa340d 100644 --- a/arch/avr32/kernel/syscall_table.S +++ b/arch/avr32/kernel/syscall_table.S @@ -291,4 +291,5 @@ sys_call_table: .long sys_shmget /* 275 */ .long sys_shmdt .long sys_shmctl + .long sys_utimensat .long sys_ni_syscall /* r8 is saturated at nr_syscalls */ diff --git a/arch/avr32/kernel/traps.c b/arch/avr32/kernel/traps.c index 4de9edf96ed2..86d107511dd4 100644 --- a/arch/avr32/kernel/traps.c +++ b/arch/avr32/kernel/traps.c @@ -123,7 +123,7 @@ asmlinkage void do_address_exception(unsigned long ecr, struct pt_regs *regs) /* This way of handling undefined instructions is stolen from ARM */ static LIST_HEAD(undef_hook); -static spinlock_t undef_lock = SPIN_LOCK_UNLOCKED; +static DEFINE_SPINLOCK(undef_lock); void register_undef_hook(struct undef_hook *hook) { diff --git a/arch/avr32/kernel/vmlinux.lds.c b/arch/avr32/kernel/vmlinux.lds.c index 7ad20cfb48a8..e7f72c995a32 100644 --- a/arch/avr32/kernel/vmlinux.lds.c +++ b/arch/avr32/kernel/vmlinux.lds.c @@ -35,7 +35,7 @@ SECTIONS _einittext = .; . = ALIGN(4); __tagtable_begin = .; - *(.taglist) + *(.taglist.init) __tagtable_end = .; *(.init.data) . = ALIGN(16); diff --git a/arch/avr32/mach-at32ap/clock.c b/arch/avr32/mach-at32ap/clock.c index 00c435452d7e..0f8c89c9f832 100644 --- a/arch/avr32/mach-at32ap/clock.c +++ b/arch/avr32/mach-at32ap/clock.c @@ -18,7 +18,7 @@ #include "clock.h" -static spinlock_t clk_lock = SPIN_LOCK_UNLOCKED; +static DEFINE_SPINLOCK(clk_lock); struct clk *clk_get(struct device *dev, const char *id) { diff --git a/arch/avr32/mm/dma-coherent.c b/arch/avr32/mm/dma-coherent.c index b68d669f823d..099212d4567c 100644 --- a/arch/avr32/mm/dma-coherent.c +++ b/arch/avr32/mm/dma-coherent.c @@ -112,16 +112,21 @@ void dma_free_coherent(struct device *dev, size_t size, } EXPORT_SYMBOL(dma_free_coherent); -#if 0 void *dma_alloc_writecombine(struct device *dev, size_t size, dma_addr_t *handle, gfp_t gfp) { struct page *page; + dma_addr_t phys; page = __dma_alloc(dev, size, handle, gfp); + if (!page) + return NULL; + + phys = page_to_phys(page); + *handle = phys; /* Now, map the page into P3 with write-combining turned on */ - return __ioremap(page_to_phys(page), size, _PAGE_BUFFER); + return __ioremap(phys, size, _PAGE_BUFFER); } EXPORT_SYMBOL(dma_alloc_writecombine); @@ -132,8 +137,7 @@ void dma_free_writecombine(struct device *dev, size_t size, iounmap(cpu_addr); - page = bus_to_page(handle); + page = phys_to_page(handle); __dma_free(dev, size, page, handle); } EXPORT_SYMBOL(dma_free_writecombine); -#endif diff --git a/arch/blackfin/kernel/asm-offsets.c b/arch/blackfin/kernel/asm-offsets.c index 41d9a9f89700..e455f4504509 100644 --- a/arch/blackfin/kernel/asm-offsets.c +++ b/arch/blackfin/kernel/asm-offsets.c @@ -46,7 +46,7 @@ int main(void) DEFINE(TASK_PTRACE, offsetof(struct task_struct, ptrace)); DEFINE(TASK_BLOCKED, offsetof(struct task_struct, blocked)); DEFINE(TASK_THREAD, offsetof(struct task_struct, thread)); - DEFINE(TASK_THREAD_INFO, offsetof(struct task_struct, thread_info)); + DEFINE(TASK_THREAD_INFO, offsetof(struct task_struct, stack)); DEFINE(TASK_MM, offsetof(struct task_struct, mm)); DEFINE(TASK_ACTIVE_MM, offsetof(struct task_struct, active_mm)); DEFINE(TASK_SIGPENDING, offsetof(struct task_struct, pending)); diff --git a/arch/blackfin/kernel/ptrace.c b/arch/blackfin/kernel/ptrace.c index d7c8e514cb92..e718bb4a1ef0 100644 --- a/arch/blackfin/kernel/ptrace.c +++ b/arch/blackfin/kernel/ptrace.c @@ -73,7 +73,7 @@ static inline struct pt_regs *get_user_regs(struct task_struct *task) { return (struct pt_regs *) - ((unsigned long)task->thread_info + + ((unsigned long)task_stack_page(task) + (THREAD_SIZE - sizeof(struct pt_regs))); } @@ -99,7 +99,7 @@ static inline long get_reg(struct task_struct *task, int regno) unsigned char *reg_ptr; struct pt_regs *regs = - (struct pt_regs *)((unsigned long)task->thread_info + + (struct pt_regs *)((unsigned long)task_stack_page(task) + (THREAD_SIZE - sizeof(struct pt_regs))); reg_ptr = (char *)regs; @@ -125,7 +125,7 @@ put_reg(struct task_struct *task, int regno, unsigned long data) char * reg_ptr; struct pt_regs *regs = - (struct pt_regs *)((unsigned long)task->thread_info + + (struct pt_regs *)((unsigned long)task_stack_page(task) + (THREAD_SIZE - sizeof(struct pt_regs))); reg_ptr = (char *)regs; diff --git a/arch/cris/arch-v32/drivers/Kconfig b/arch/cris/arch-v32/drivers/Kconfig index f64624fc4504..1d859c16931e 100644 --- a/arch/cris/arch-v32/drivers/Kconfig +++ b/arch/cris/arch-v32/drivers/Kconfig @@ -603,7 +603,7 @@ config ETRAX_CARDBUS select HOTPLUG select PCCARD_NONSTATIC help - Enabled the ETRAX Carbus driver. + Enabled the ETRAX Cardbus driver. config PCI bool diff --git a/arch/frv/Kconfig b/arch/frv/Kconfig index eed694312a79..114738a45582 100644 --- a/arch/frv/Kconfig +++ b/arch/frv/Kconfig @@ -45,15 +45,15 @@ config TIME_LOW_RES bool default y -config ARCH_HAS_ILOG2_U32 +config QUICKLIST bool default y -config ARCH_HAS_ILOG2_U64 +config ARCH_HAS_ILOG2_U32 bool default y -config ARCH_USES_SLAB_PAGE_STRUCT +config ARCH_HAS_ILOG2_U64 bool default y diff --git a/arch/frv/kernel/process.c b/arch/frv/kernel/process.c index 515a5cea5469..9583a338e9d6 100644 --- a/arch/frv/kernel/process.c +++ b/arch/frv/kernel/process.c @@ -25,12 +25,14 @@ #include <linux/elf.h> #include <linux/reboot.h> #include <linux/interrupt.h> +#include <linux/pagemap.h> #include <asm/asm-offsets.h> #include <asm/uaccess.h> #include <asm/system.h> #include <asm/setup.h> #include <asm/pgtable.h> +#include <asm/tlb.h> #include <asm/gdb-stub.h> #include <asm/mb-regs.h> @@ -88,6 +90,8 @@ void cpu_idle(void) while (!need_resched()) { irq_stat[cpu].idle_timestamp = jiffies; + check_pgt_cache(); + if (!frv_dma_inprogress && idle) idle(); } diff --git a/arch/frv/mm/pgalloc.c b/arch/frv/mm/pgalloc.c index 598a26ab8ad8..7787c3cc52c6 100644 --- a/arch/frv/mm/pgalloc.c +++ b/arch/frv/mm/pgalloc.c @@ -13,12 +13,12 @@ #include <linux/slab.h> #include <linux/mm.h> #include <linux/highmem.h> +#include <linux/quicklist.h> #include <asm/pgalloc.h> #include <asm/page.h> #include <asm/cacheflush.h> pgd_t swapper_pg_dir[PTRS_PER_PGD] __attribute__((aligned(PAGE_SIZE))); -struct kmem_cache *pgd_cache; pte_t *pte_alloc_one_kernel(struct mm_struct *mm, unsigned long address) { @@ -100,7 +100,7 @@ static inline void pgd_list_del(pgd_t *pgd) set_page_private(next, (unsigned long) pprev); } -void pgd_ctor(void *pgd, struct kmem_cache *cache, unsigned long unused) +void pgd_ctor(void *pgd) { unsigned long flags; @@ -120,7 +120,7 @@ void pgd_ctor(void *pgd, struct kmem_cache *cache, unsigned long unused) } /* never called when PTRS_PER_PMD > 1 */ -void pgd_dtor(void *pgd, struct kmem_cache *cache, unsigned long unused) +void pgd_dtor(void *pgd) { unsigned long flags; /* can be called from interrupt context */ @@ -133,7 +133,7 @@ pgd_t *pgd_alloc(struct mm_struct *mm) { pgd_t *pgd; - pgd = kmem_cache_alloc(pgd_cache, GFP_KERNEL); + pgd = quicklist_alloc(0, GFP_KERNEL, pgd_ctor); if (!pgd) return pgd; @@ -143,15 +143,15 @@ pgd_t *pgd_alloc(struct mm_struct *mm) void pgd_free(pgd_t *pgd) { /* in the non-PAE case, clear_page_tables() clears user pgd entries */ - kmem_cache_free(pgd_cache, pgd); + quicklist_free(0, pgd_dtor, pgd); } void __init pgtable_cache_init(void) { - pgd_cache = kmem_cache_create("pgd", - PTRS_PER_PGD * sizeof(pgd_t), - PTRS_PER_PGD * sizeof(pgd_t), - SLAB_PANIC, - pgd_ctor, - pgd_dtor); } + +void check_pgt_cache(void) +{ + quicklist_trim(0, pgd_dtor, 25, 16); +} + diff --git a/arch/h8300/Kconfig.debug b/arch/h8300/Kconfig.debug index e0e9bcb015a9..554efe604a08 100644 --- a/arch/h8300/Kconfig.debug +++ b/arch/h8300/Kconfig.debug @@ -21,12 +21,12 @@ config GDB_MAGICPRINT bool "Message Output for GDB MagicPrint service" depends on (H8300H_SIM || H8S_SIM) help - kernel messages output useing MagicPrint service from GDB + kernel messages output using MagicPrint service from GDB config SYSCALL_PRINT bool "SystemCall trace print" help - outout history of systemcall + output history of systemcall config GDB_DEBUG bool "Use gdb stub" diff --git a/arch/h8300/kernel/asm-offsets.c b/arch/h8300/kernel/asm-offsets.c index b78b82ad28a3..fc30b4fd0914 100644 --- a/arch/h8300/kernel/asm-offsets.c +++ b/arch/h8300/kernel/asm-offsets.c @@ -30,7 +30,7 @@ int main(void) DEFINE(TASK_PTRACE, offsetof(struct task_struct, ptrace)); DEFINE(TASK_BLOCKED, offsetof(struct task_struct, blocked)); DEFINE(TASK_THREAD, offsetof(struct task_struct, thread)); - DEFINE(TASK_THREAD_INFO, offsetof(struct task_struct, thread_info)); + DEFINE(TASK_THREAD_INFO, offsetof(struct task_struct, stack)); DEFINE(TASK_MM, offsetof(struct task_struct, mm)); DEFINE(TASK_ACTIVE_MM, offsetof(struct task_struct, active_mm)); diff --git a/arch/i386/Kconfig b/arch/i386/Kconfig index 64ad10f984a1..30944ee2e61a 100644 --- a/arch/i386/Kconfig +++ b/arch/i386/Kconfig @@ -858,9 +858,9 @@ config RELOCATABLE bool "Build a relocatable kernel(EXPERIMENTAL)" depends on EXPERIMENTAL help - This build a kernel image that retains relocation information + This builds a kernel image that retains relocation information so it can be loaded someplace besides the default 1MB. - The relocations tend to the kernel binary about 10% larger, + The relocations tend to make the kernel binary about 10% larger, but are discarded at runtime. One use is for the kexec on panic case where the recovery kernel diff --git a/arch/i386/Kconfig.cpu b/arch/i386/Kconfig.cpu index dce6124cb842..d7f6fb0b30f2 100644 --- a/arch/i386/Kconfig.cpu +++ b/arch/i386/Kconfig.cpu @@ -108,7 +108,7 @@ config MCORE2 bool "Core 2/newer Xeon" help Select this for Intel Core 2 and newer Core 2 Xeons (Xeon 51xx and 53xx) - CPUs. You can distingush newer from older Xeons by the CPU family + CPUs. You can distinguish newer from older Xeons by the CPU family in /proc/cpuinfo. Newer ones have 6. config MPENTIUM4 @@ -172,7 +172,7 @@ config MWINCHIP3D help Select this for an IDT Winchip-2A or 3. Linux and GCC treat this chip as a 586TSC with some extended instructions - and alignment reqirements. Also enable out of order memory + and alignment requirements. Also enable out of order memory stores for this CPU, which can increase performance of some operations. diff --git a/arch/i386/kernel/cpu/intel_cacheinfo.c b/arch/i386/kernel/cpu/intel_cacheinfo.c index 80b4c5d421b1..e5be819492ef 100644 --- a/arch/i386/kernel/cpu/intel_cacheinfo.c +++ b/arch/i386/kernel/cpu/intel_cacheinfo.c @@ -733,9 +733,11 @@ static int __cpuinit cacheinfo_cpu_callback(struct notifier_block *nfb, sys_dev = get_cpu_sysdev(cpu); switch (action) { case CPU_ONLINE: + case CPU_ONLINE_FROZEN: cache_add_dev(sys_dev); break; case CPU_DEAD: + case CPU_DEAD_FROZEN: cache_remove_dev(sys_dev); break; } diff --git a/arch/i386/kernel/cpu/mcheck/therm_throt.c b/arch/i386/kernel/cpu/mcheck/therm_throt.c index 065005c3f168..7ba7c3abd3a4 100644 --- a/arch/i386/kernel/cpu/mcheck/therm_throt.c +++ b/arch/i386/kernel/cpu/mcheck/therm_throt.c @@ -1,5 +1,5 @@ /* - * linux/arch/i386/kerne/cpu/mcheck/therm_throt.c + * linux/arch/i386/kernel/cpu/mcheck/therm_throt.c * * Thermal throttle event support code (such as syslog messaging and rate * limiting) that was factored out from x86_64 (mce_intel.c) and i386 (p4.c). @@ -137,10 +137,12 @@ static __cpuinit int thermal_throttle_cpu_callback(struct notifier_block *nfb, mutex_lock(&therm_cpu_lock); switch (action) { case CPU_ONLINE: + case CPU_ONLINE_FROZEN: err = thermal_throttle_add_dev(sys_dev); WARN_ON(err); break; case CPU_DEAD: + case CPU_DEAD_FROZEN: thermal_throttle_remove_dev(sys_dev); break; } diff --git a/arch/i386/kernel/cpu/transmeta.c b/arch/i386/kernel/cpu/transmeta.c index 6471a5a13202..200fb3f9ebfb 100644 --- a/arch/i386/kernel/cpu/transmeta.c +++ b/arch/i386/kernel/cpu/transmeta.c @@ -77,8 +77,10 @@ static void __cpuinit init_transmeta(struct cpuinfo_x86 *c) set_bit(X86_FEATURE_CONSTANT_TSC, c->x86_capability); /* If we can run i686 user-space code, call us an i686 */ -#define USER686 (X86_FEATURE_TSC|X86_FEATURE_CX8|X86_FEATURE_CMOV) - if ( c->x86 == 5 && (c->x86_capability[0] & USER686) == USER686 ) +#define USER686 ((1 << X86_FEATURE_TSC)|\ + (1 << X86_FEATURE_CX8)|\ + (1 << X86_FEATURE_CMOV)) + if (c->x86 == 5 && (c->x86_capability[0] & USER686) == USER686) c->x86 = 6; #ifdef CONFIG_SYSCTL diff --git a/arch/i386/kernel/cpuid.c b/arch/i386/kernel/cpuid.c index eeae0d992337..5c2faa10e9fa 100644 --- a/arch/i386/kernel/cpuid.c +++ b/arch/i386/kernel/cpuid.c @@ -169,9 +169,11 @@ static int cpuid_class_cpu_callback(struct notifier_block *nfb, unsigned long ac switch (action) { case CPU_ONLINE: + case CPU_ONLINE_FROZEN: cpuid_device_create(cpu); break; case CPU_DEAD: + case CPU_DEAD_FROZEN: device_destroy(cpuid_class, MKDEV(CPUID_MAJOR, cpu)); break; } diff --git a/arch/i386/kernel/microcode.c b/arch/i386/kernel/microcode.c index cbe7ec8dbb9f..83f825f2e2d7 100644 --- a/arch/i386/kernel/microcode.c +++ b/arch/i386/kernel/microcode.c @@ -567,7 +567,7 @@ static int cpu_request_microcode(int cpu) return error; } -static int apply_microcode_on_cpu(int cpu) +static int apply_microcode_check_cpu(int cpu) { struct cpuinfo_x86 *c = cpu_data + cpu; struct ucode_cpu_info *uci = ucode_cpu_info + cpu; @@ -575,8 +575,9 @@ static int apply_microcode_on_cpu(int cpu) unsigned int val[2]; int err = 0; + /* Check if the microcode is available */ if (!uci->mc) - return -EINVAL; + return 0; old = current->cpus_allowed; set_cpus_allowed(current, cpumask_of_cpu(cpu)); @@ -614,7 +615,7 @@ static int apply_microcode_on_cpu(int cpu) return err; } -static void microcode_init_cpu(int cpu) +static void microcode_init_cpu(int cpu, int resume) { cpumask_t old; struct ucode_cpu_info *uci = ucode_cpu_info + cpu; @@ -624,8 +625,7 @@ static void microcode_init_cpu(int cpu) set_cpus_allowed(current, cpumask_of_cpu(cpu)); mutex_lock(µcode_mutex); collect_cpu_info(cpu); - if (uci->valid && system_state == SYSTEM_RUNNING && - !suspend_cpu_hotplug) + if (uci->valid && system_state == SYSTEM_RUNNING && !resume) cpu_request_microcode(cpu); mutex_unlock(µcode_mutex); set_cpus_allowed(current, old); @@ -702,7 +702,7 @@ static struct attribute_group mc_attr_group = { .name = "microcode", }; -static int mc_sysdev_add(struct sys_device *sys_dev) +static int __mc_sysdev_add(struct sys_device *sys_dev, int resume) { int err, cpu = sys_dev->id; struct ucode_cpu_info *uci = ucode_cpu_info + cpu; @@ -711,39 +711,31 @@ static int mc_sysdev_add(struct sys_device *sys_dev) return 0; pr_debug("Microcode:CPU %d added\n", cpu); - /* If suspend_cpu_hotplug is set, the system is resuming and we should - * use the data from before the suspend. - */ - if (suspend_cpu_hotplug) { - err = apply_microcode_on_cpu(cpu); - if (err) - microcode_fini_cpu(cpu); - } - if (!uci->valid) - memset(uci, 0, sizeof(*uci)); + memset(uci, 0, sizeof(*uci)); err = sysfs_create_group(&sys_dev->kobj, &mc_attr_group); if (err) return err; - if (!uci->valid) - microcode_init_cpu(cpu); + microcode_init_cpu(cpu, resume); return 0; } +static int mc_sysdev_add(struct sys_device *sys_dev) +{ + return __mc_sysdev_add(sys_dev, 0); +} + static int mc_sysdev_remove(struct sys_device *sys_dev) { int cpu = sys_dev->id; if (!cpu_online(cpu)) return 0; + pr_debug("Microcode:CPU %d removed\n", cpu); - /* If suspend_cpu_hotplug is set, the system is suspending and we should - * keep the microcode in memory for the resume. - */ - if (!suspend_cpu_hotplug) - microcode_fini_cpu(cpu); + microcode_fini_cpu(cpu); sysfs_remove_group(&sys_dev->kobj, &mc_attr_group); return 0; } @@ -774,13 +766,34 @@ mc_cpu_callback(struct notifier_block *nb, unsigned long action, void *hcpu) sys_dev = get_cpu_sysdev(cpu); switch (action) { + case CPU_UP_CANCELED_FROZEN: + /* The CPU refused to come up during a system resume */ + microcode_fini_cpu(cpu); + break; case CPU_ONLINE: case CPU_DOWN_FAILED: mc_sysdev_add(sys_dev); break; + case CPU_ONLINE_FROZEN: + /* System-wide resume is in progress, try to apply microcode */ + if (apply_microcode_check_cpu(cpu)) { + /* The application of microcode failed */ + microcode_fini_cpu(cpu); + __mc_sysdev_add(sys_dev, 1); + break; + } + case CPU_DOWN_FAILED_FROZEN: + if (sysfs_create_group(&sys_dev->kobj, &mc_attr_group)) + printk(KERN_ERR "Microcode: Failed to create the sysfs " + "group for CPU%d\n", cpu); + break; case CPU_DOWN_PREPARE: mc_sysdev_remove(sys_dev); break; + case CPU_DOWN_PREPARE_FROZEN: + /* Suspend is in progress, only remove the interface */ + sysfs_remove_group(&sys_dev->kobj, &mc_attr_group); + break; } return NOTIFY_OK; } diff --git a/arch/i386/kernel/msr.c b/arch/i386/kernel/msr.c index 8cd0a91ce107..0c1069b8d638 100644 --- a/arch/i386/kernel/msr.c +++ b/arch/i386/kernel/msr.c @@ -153,9 +153,11 @@ static int msr_class_cpu_callback(struct notifier_block *nfb, switch (action) { case CPU_ONLINE: + case CPU_ONLINE_FROZEN: msr_device_create(cpu); break; case CPU_DEAD: + case CPU_DEAD_FROZEN: device_destroy(msr_class, MKDEV(MSR_MAJOR, cpu)); break; } diff --git a/arch/i386/kernel/traps.c b/arch/i386/kernel/traps.c index 4bec0cbf407a..c05e7e861b29 100644 --- a/arch/i386/kernel/traps.c +++ b/arch/i386/kernel/traps.c @@ -305,7 +305,7 @@ void show_registers(struct pt_regs *regs) regs->xds & 0xffff, regs->xes & 0xffff, regs->xfs & 0xffff, gs, ss); printk(KERN_EMERG "Process %.*s (pid: %d, ti=%p task=%p task.ti=%p)", TASK_COMM_LEN, current->comm, current->pid, - current_thread_info(), current, current->thread_info); + current_thread_info(), current, task_thread_info(current)); /* * When in-kernel, we also print out the stack and code at the * time of the fault.. diff --git a/arch/i386/mach-generic/probe.c b/arch/i386/mach-generic/probe.c index a7b3999bb37a..74f3da634423 100644 --- a/arch/i386/mach-generic/probe.c +++ b/arch/i386/mach-generic/probe.c @@ -119,9 +119,7 @@ int __init acpi_madt_oem_check(char *oem_id, char *oem_table_id) return 0; } -#ifdef CONFIG_SMP int hard_smp_processor_id(void) { return genapic->get_apic_id(*(unsigned long *)(APIC_BASE+APIC_ID)); } -#endif diff --git a/arch/i386/mach-voyager/voyager_basic.c b/arch/i386/mach-voyager/voyager_basic.c index 8fe7e4593d5f..9b77b39b71a6 100644 --- a/arch/i386/mach-voyager/voyager_basic.c +++ b/arch/i386/mach-voyager/voyager_basic.c @@ -292,8 +292,8 @@ machine_emergency_restart(void) void mca_nmi_hook(void) { - __u8 dumpval __attribute__((unused)) = inb(0xf823); - __u8 swnmi __attribute__((unused)) = inb(0xf813); + __u8 dumpval __maybe_unused = inb(0xf823); + __u8 swnmi __maybe_unused = inb(0xf813); /* FIXME: assume dump switch pressed */ /* check to see if the dump switch was pressed */ diff --git a/arch/i386/pci/init.c b/arch/i386/pci/init.c index 1cf11af96de2..3de9f9ba2da6 100644 --- a/arch/i386/pci/init.c +++ b/arch/i386/pci/init.c @@ -6,7 +6,7 @@ in the right sequence from here. */ static __init int pci_access_init(void) { - int type __attribute__((unused)) = 0; + int type __maybe_unused = 0; #ifdef CONFIG_PCI_DIRECT type = pci_direct_probe(); diff --git a/arch/ia64/Kconfig b/arch/ia64/Kconfig index e23af4b6ae8c..6e41471449c0 100644 --- a/arch/ia64/Kconfig +++ b/arch/ia64/Kconfig @@ -468,7 +468,7 @@ config KEXEC help kexec is a system call that implements the ability to shutdown your current kernel, and to start another kernel. It is like a reboot - but it is indepedent of the system firmware. And like a reboot + but it is independent of the system firmware. And like a reboot you can start any kernel with it, not just Linux. The name comes from the similiarity to the exec system call. diff --git a/arch/ia64/kernel/err_inject.c b/arch/ia64/kernel/err_inject.c index d3e9f33e8bdd..6a49600cf337 100644 --- a/arch/ia64/kernel/err_inject.c +++ b/arch/ia64/kernel/err_inject.c @@ -236,9 +236,11 @@ static int __cpuinit err_inject_cpu_callback(struct notifier_block *nfb, sys_dev = get_cpu_sysdev(cpu); switch (action) { case CPU_ONLINE: + case CPU_ONLINE_FROZEN: err_inject_add_dev(sys_dev); break; case CPU_DEAD: + case CPU_DEAD_FROZEN: err_inject_remove_dev(sys_dev); break; } diff --git a/arch/ia64/kernel/mca.c b/arch/ia64/kernel/mca.c index 1d7cc7e2ce32..f8ae709de0b5 100644 --- a/arch/ia64/kernel/mca.c +++ b/arch/ia64/kernel/mca.c @@ -1689,7 +1689,7 @@ format_mca_init_stack(void *mca_data, unsigned long offset, ti->preempt_count = 1; ti->task = p; ti->cpu = cpu; - p->thread_info = ti; + p->stack = ti; p->state = TASK_UNINTERRUPTIBLE; cpu_set(cpu, p->cpus_allowed); INIT_LIST_HEAD(&p->tasks); diff --git a/arch/ia64/kernel/palinfo.c b/arch/ia64/kernel/palinfo.c index a71df9ae0397..85829e27785c 100644 --- a/arch/ia64/kernel/palinfo.c +++ b/arch/ia64/kernel/palinfo.c @@ -975,9 +975,11 @@ static int palinfo_cpu_callback(struct notifier_block *nfb, switch (action) { case CPU_ONLINE: + case CPU_ONLINE_FROZEN: create_palinfo_proc_entries(hotcpu); break; case CPU_DEAD: + case CPU_DEAD_FROZEN: remove_palinfo_proc_entries(hotcpu); break; } diff --git a/arch/ia64/kernel/salinfo.c b/arch/ia64/kernel/salinfo.c index a51f1d0bfb70..89f6b138a62c 100644 --- a/arch/ia64/kernel/salinfo.c +++ b/arch/ia64/kernel/salinfo.c @@ -582,6 +582,7 @@ salinfo_cpu_callback(struct notifier_block *nb, unsigned long action, void *hcpu struct salinfo_data *data; switch (action) { case CPU_ONLINE: + case CPU_ONLINE_FROZEN: spin_lock_irqsave(&data_saved_lock, flags); for (i = 0, data = salinfo_data; i < ARRAY_SIZE(salinfo_data); @@ -592,6 +593,7 @@ salinfo_cpu_callback(struct notifier_block *nb, unsigned long action, void *hcpu spin_unlock_irqrestore(&data_saved_lock, flags); break; case CPU_DEAD: + case CPU_DEAD_FROZEN: spin_lock_irqsave(&data_saved_lock, flags); for (i = 0, data = salinfo_data; i < ARRAY_SIZE(salinfo_data); diff --git a/arch/ia64/kernel/topology.c b/arch/ia64/kernel/topology.c index 687500ddb4b8..94ae3c87d828 100644 --- a/arch/ia64/kernel/topology.c +++ b/arch/ia64/kernel/topology.c @@ -412,9 +412,11 @@ static int __cpuinit cache_cpu_callback(struct notifier_block *nfb, sys_dev = get_cpu_sysdev(cpu); switch (action) { case CPU_ONLINE: + case CPU_ONLINE_FROZEN: cache_add_dev(sys_dev); break; case CPU_DEAD: + case CPU_DEAD_FROZEN: cache_remove_dev(sys_dev); break; } diff --git a/arch/m68knommu/Kconfig.debug b/arch/m68knommu/Kconfig.debug index 763c9aa0b4fd..9ff47bd09aee 100644 --- a/arch/m68knommu/Kconfig.debug +++ b/arch/m68knommu/Kconfig.debug @@ -5,7 +5,7 @@ source "lib/Kconfig.debug" config FULLDEBUG bool "Full Symbolic/Source Debugging support" help - Enable debuging symbols on kernel build. + Enable debugging symbols on kernel build. config HIGHPROFILE bool "Use fast second timer for profiling" diff --git a/arch/m68knommu/kernel/asm-offsets.c b/arch/m68knommu/kernel/asm-offsets.c index b988c7bdc6e4..7cd183d346ef 100644 --- a/arch/m68knommu/kernel/asm-offsets.c +++ b/arch/m68knommu/kernel/asm-offsets.c @@ -31,7 +31,7 @@ int main(void) DEFINE(TASK_PTRACE, offsetof(struct task_struct, ptrace)); DEFINE(TASK_BLOCKED, offsetof(struct task_struct, blocked)); DEFINE(TASK_THREAD, offsetof(struct task_struct, thread)); - DEFINE(TASK_THREAD_INFO, offsetof(struct task_struct, thread_info)); + DEFINE(TASK_THREAD_INFO, offsetof(struct task_struct, stack)); DEFINE(TASK_MM, offsetof(struct task_struct, mm)); DEFINE(TASK_ACTIVE_MM, offsetof(struct task_struct, active_mm)); diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig index b7cb048bc771..16ecea3c0813 100644 --- a/arch/mips/Kconfig +++ b/arch/mips/Kconfig @@ -956,7 +956,7 @@ choice byte order. These modes require different kernels and a different Linux distribution. In general there is one preferred byteorder for a particular system but some systems are just as commonly used in the - one or the other endianess. + one or the other endianness. config CPU_BIG_ENDIAN bool "Big endian" @@ -1750,7 +1750,7 @@ config ARCH_DISCONTIGMEM_ENABLE bool default y if SGI_IP27 help - Say Y to upport efficient handling of discontiguous physical memory, + Say Y to support efficient handling of discontiguous physical memory, for architectures which are either NUMA (Non-Uniform Memory Access) or have huge holes in the physical address space for other reasons. See <file:Documentation/vm/numa> for more. @@ -1938,7 +1938,7 @@ config KEXEC help kexec is a system call that implements the ability to shutdown your current kernel, and to start another kernel. It is like a reboot - but it is indepedent of the system firmware. And like a reboot + but it is independent of the system firmware. And like a reboot you can start any kernel with it, not just Linux. The name comes from the similiarity to the exec system call. diff --git a/arch/mips/Makefile b/arch/mips/Makefile index f2f742df32c7..4892db88a86a 100644 --- a/arch/mips/Makefile +++ b/arch/mips/Makefile @@ -92,7 +92,7 @@ cflags-y += -ffreestanding # when fed the toolchain default! # # Certain gcc versions upto gcc 4.1.1 (probably 4.2-subversion as of -# 2006-10-10 don't properly change the the predefined symbols if -EB / -EL +# 2006-10-10 don't properly change the predefined symbols if -EB / -EL # are used, so we kludge that here. A bug has been filed at # http://gcc.gnu.org/bugzilla/show_bug.cgi?id=29413. # diff --git a/arch/mips/kernel/asm-offsets.c b/arch/mips/kernel/asm-offsets.c index 761a779d5c4f..3b27309d54b1 100644 --- a/arch/mips/kernel/asm-offsets.c +++ b/arch/mips/kernel/asm-offsets.c @@ -82,7 +82,7 @@ void output_task_defines(void) { text("/* MIPS task_struct offsets. */"); offset("#define TASK_STATE ", struct task_struct, state); - offset("#define TASK_THREAD_INFO ", struct task_struct, thread_info); + offset("#define TASK_THREAD_INFO ", struct task_struct, stack); offset("#define TASK_FLAGS ", struct task_struct, flags); offset("#define TASK_MM ", struct task_struct, mm); offset("#define TASK_PID ", struct task_struct, pid); diff --git a/arch/mips/kernel/smtc.c b/arch/mips/kernel/smtc.c index 5dcfab6b288e..b361edb83dc6 100644 --- a/arch/mips/kernel/smtc.c +++ b/arch/mips/kernel/smtc.c @@ -560,7 +560,7 @@ void smtc_boot_secondary(int cpu, struct task_struct *idle) write_tc_gpr_sp(__KSTK_TOS(idle)); /* global pointer */ - write_tc_gpr_gp((unsigned long)idle->thread_info); + write_tc_gpr_gp((unsigned long)task_thread_info(idle)); smtc_status |= SMTC_MTC_ACTIVE; write_tc_c0_tchalt(0); diff --git a/arch/mips/pci/fixup-sb1250.c b/arch/mips/pci/fixup-sb1250.c index 7a7444874e80..0ad39e53f7b1 100644 --- a/arch/mips/pci/fixup-sb1250.c +++ b/arch/mips/pci/fixup-sb1250.c @@ -14,7 +14,7 @@ #include <linux/pci.h> /* - * Set the the BCM1250, etc. PCI host bridge's TRDY timeout + * Set the BCM1250, etc. PCI host bridge's TRDY timeout * to the finite max. */ static void __init quirk_sb1250_pci(struct pci_dev *dev) @@ -35,7 +35,7 @@ DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_SIBYTE, PCI_DEVICE_ID_BCM1250_HT, quirk_sb1250_ht); /* - * Set the the SP1011 HT/PCI bridge's TRDY timeout to the finite max. + * Set the SP1011 HT/PCI bridge's TRDY timeout to the finite max. */ static void __init quirk_sp1011(struct pci_dev *dev) { diff --git a/arch/parisc/kernel/asm-offsets.c b/arch/parisc/kernel/asm-offsets.c index 54fdb959149c..d3b7917a87cb 100644 --- a/arch/parisc/kernel/asm-offsets.c +++ b/arch/parisc/kernel/asm-offsets.c @@ -54,7 +54,7 @@ int main(void) { - DEFINE(TASK_THREAD_INFO, offsetof(struct task_struct, thread_info)); + DEFINE(TASK_THREAD_INFO, offsetof(struct task_struct, stack)); DEFINE(TASK_STATE, offsetof(struct task_struct, state)); DEFINE(TASK_FLAGS, offsetof(struct task_struct, flags)); DEFINE(TASK_SIGPENDING, offsetof(struct task_struct, pending)); diff --git a/arch/powerpc/Kconfig.debug b/arch/powerpc/Kconfig.debug index f70e795c262e..346cd3befe1e 100644 --- a/arch/powerpc/Kconfig.debug +++ b/arch/powerpc/Kconfig.debug @@ -32,7 +32,7 @@ config HCALL_STATS depends on PPC_PSERIES && DEBUG_FS help Adds code to keep track of the number of hypervisor calls made and - the amount of time spent in hypervisor callsr. Wall time spent in + the amount of time spent in hypervisor calls. Wall time spent in each call is always calculated, and if available CPU cycles spent are also calculated. A directory named hcall_inst is added at the root of the debugfs filesystem. Within the hcall_inst directory diff --git a/arch/powerpc/kernel/asm-offsets.c b/arch/powerpc/kernel/asm-offsets.c index d6803fb7b28b..2cb1d9487796 100644 --- a/arch/powerpc/kernel/asm-offsets.c +++ b/arch/powerpc/kernel/asm-offsets.c @@ -58,7 +58,7 @@ int main(void) #ifdef CONFIG_PPC64 DEFINE(AUDITCONTEXT, offsetof(struct task_struct, audit_context)); #else - DEFINE(THREAD_INFO, offsetof(struct task_struct, thread_info)); + DEFINE(THREAD_INFO, offsetof(struct task_struct, stack)); DEFINE(PTRACE, offsetof(struct task_struct, ptrace)); #endif /* CONFIG_PPC64 */ diff --git a/arch/powerpc/kernel/sysfs.c b/arch/powerpc/kernel/sysfs.c index cae39d9dfe48..68991c2d4a1b 100644 --- a/arch/powerpc/kernel/sysfs.c +++ b/arch/powerpc/kernel/sysfs.c @@ -342,10 +342,12 @@ static int __cpuinit sysfs_cpu_notify(struct notifier_block *self, switch (action) { case CPU_ONLINE: + case CPU_ONLINE_FROZEN: register_cpu_online(cpu); break; #ifdef CONFIG_HOTPLUG_CPU case CPU_DEAD: + case CPU_DEAD_FROZEN: unregister_cpu_online(cpu); break; #endif diff --git a/arch/powerpc/mm/numa.c b/arch/powerpc/mm/numa.c index b3a592b25ab3..de45aa82d97b 100644 --- a/arch/powerpc/mm/numa.c +++ b/arch/powerpc/mm/numa.c @@ -252,12 +252,15 @@ static int __cpuinit cpu_numa_callback(struct notifier_block *nfb, switch (action) { case CPU_UP_PREPARE: + case CPU_UP_PREPARE_FROZEN: numa_setup_cpu(lcpu); ret = NOTIFY_OK; break; #ifdef CONFIG_HOTPLUG_CPU case CPU_DEAD: + case CPU_DEAD_FROZEN: case CPU_UP_CANCELED: + case CPU_UP_CANCELED_FROZEN: unmap_cpu_from_node(lcpu); break; ret = NOTIFY_OK; diff --git a/arch/powerpc/oprofile/op_model_cell.c b/arch/powerpc/oprofile/op_model_cell.c index 626b29f38304..c29293befba9 100644 --- a/arch/powerpc/oprofile/op_model_cell.c +++ b/arch/powerpc/oprofile/op_model_cell.c @@ -747,7 +747,7 @@ cell_handle_interrupt(struct pt_regs *regs, struct op_counter_config *ctr) * counter value etc.) are not copied to the actual registers * until the performance monitor is enabled. In order to get * this to work as desired, the permormance monitor needs to - * be disabled while writting to the latches. This is a + * be disabled while writing to the latches. This is a * HW design issue. */ cbe_enable_pm(cpu); diff --git a/arch/powerpc/platforms/8xx/mpc86xads_setup.c b/arch/powerpc/platforms/8xx/mpc86xads_setup.c index a35315af5c53..cf0e7bc8c2e7 100644 --- a/arch/powerpc/platforms/8xx/mpc86xads_setup.c +++ b/arch/powerpc/platforms/8xx/mpc86xads_setup.c @@ -1,4 +1,4 @@ -/*arch/ppc/platforms/mpc86xads-setup.c +/*arch/powerpc/platforms/8xx/mpc86xads_setup.c * * Platform setup for the Freescale mpc86xads board * diff --git a/arch/powerpc/platforms/8xx/mpc885ads_setup.c b/arch/powerpc/platforms/8xx/mpc885ads_setup.c index a57b57785acd..c36e475d93dc 100644 --- a/arch/powerpc/platforms/8xx/mpc885ads_setup.c +++ b/arch/powerpc/platforms/8xx/mpc885ads_setup.c @@ -1,4 +1,4 @@ -/*arch/ppc/platforms/mpc885ads-setup.c +/*arch/powerpc/platforms/8xx/mpc885ads_setup.c * * Platform setup for the Freescale mpc885ads board * diff --git a/arch/powerpc/platforms/cell/io-workarounds.c b/arch/powerpc/platforms/cell/io-workarounds.c index d68d920eb2c4..7fb92f23f380 100644 --- a/arch/powerpc/platforms/cell/io-workarounds.c +++ b/arch/powerpc/platforms/cell/io-workarounds.c @@ -74,7 +74,7 @@ static void spider_io_flush(const volatile void __iomem *addr) /* Fast path if we have a non-0 token, it indicates which bus we * are on. * - * If the token is 0, that means either the the ioremap was done + * If the token is 0, that means either that the ioremap was done * before we initialized this layer, or it's a PIO operation. We * fallback to a low path in this case. Hopefully, internal devices * which are ioremap'ed early should use in_XX/out_XX functions diff --git a/arch/ppc/kernel/asm-offsets.c b/arch/ppc/kernel/asm-offsets.c index c5850a272650..e8e94321b59e 100644 --- a/arch/ppc/kernel/asm-offsets.c +++ b/arch/ppc/kernel/asm-offsets.c @@ -35,7 +35,7 @@ int main(void) { DEFINE(THREAD, offsetof(struct task_struct, thread)); - DEFINE(THREAD_INFO, offsetof(struct task_struct, thread_info)); + DEFINE(THREAD_INFO, offsetof(struct task_struct, stack)); DEFINE(MM, offsetof(struct task_struct, mm)); DEFINE(PTRACE, offsetof(struct task_struct, ptrace)); DEFINE(KSP, offsetof(struct thread_struct, ksp)); diff --git a/arch/ppc/platforms/mpc866ads_setup.c b/arch/ppc/platforms/mpc866ads_setup.c index 7ce5364fdb3b..bf72204125c5 100644 --- a/arch/ppc/platforms/mpc866ads_setup.c +++ b/arch/ppc/platforms/mpc866ads_setup.c @@ -1,4 +1,4 @@ -/*arch/ppc/platforms/mpc866ads-setup.c +/*arch/ppc/platforms/mpc866ads_setup.c * * Platform setup for the Freescale mpc866ads board * diff --git a/arch/ppc/syslib/ipic.c b/arch/ppc/syslib/ipic.c index 10659c24b1be..9192777d0f78 100644 --- a/arch/ppc/syslib/ipic.c +++ b/arch/ppc/syslib/ipic.c @@ -1,5 +1,5 @@ /* - * include/asm-ppc/ipic.c + * arch/ppc/syslib/ipic.c * * IPIC routines implementations. * diff --git a/arch/s390/appldata/appldata_base.c b/arch/s390/appldata/appldata_base.c index ee89b33145d5..81a2b92ab0c2 100644 --- a/arch/s390/appldata/appldata_base.c +++ b/arch/s390/appldata/appldata_base.c @@ -567,9 +567,11 @@ appldata_cpu_notify(struct notifier_block *self, { switch (action) { case CPU_ONLINE: + case CPU_ONLINE_FROZEN: appldata_online_cpu((long) hcpu); break; case CPU_DEAD: + case CPU_DEAD_FROZEN: appldata_offline_cpu((long) hcpu); break; default: diff --git a/arch/s390/crypto/Kconfig b/arch/s390/crypto/Kconfig index 99ff9f08e4d7..d1defbbfcd81 100644 --- a/arch/s390/crypto/Kconfig +++ b/arch/s390/crypto/Kconfig @@ -54,7 +54,7 @@ config S390_PRNG default "m" help Select this option if you want to use the s390 pseudo random number - generator. The PRNG is part of the cryptograhic processor functions + generator. The PRNG is part of the cryptographic processor functions and uses triple-DES to generate secure random numbers like the ANSI X9.17 standard. The PRNG is usable via the char device /dev/prandom. diff --git a/arch/s390/kernel/asm-offsets.c b/arch/s390/kernel/asm-offsets.c index ec514fe5ccd0..1375f8a4469e 100644 --- a/arch/s390/kernel/asm-offsets.c +++ b/arch/s390/kernel/asm-offsets.c @@ -15,7 +15,7 @@ int main(void) { - DEFINE(__THREAD_info, offsetof(struct task_struct, thread_info),); + DEFINE(__THREAD_info, offsetof(struct task_struct, stack),); DEFINE(__THREAD_ksp, offsetof(struct task_struct, thread.ksp),); DEFINE(__THREAD_per, offsetof(struct task_struct, thread.per_info),); DEFINE(__THREAD_mm_segment, diff --git a/arch/s390/kernel/smp.c b/arch/s390/kernel/smp.c index b7977027a28f..09f028a3266b 100644 --- a/arch/s390/kernel/smp.c +++ b/arch/s390/kernel/smp.c @@ -789,10 +789,12 @@ static int __cpuinit smp_cpu_notify(struct notifier_block *self, switch (action) { case CPU_ONLINE: + case CPU_ONLINE_FROZEN: if (sysdev_create_file(s, &attr_capability)) return NOTIFY_BAD; break; case CPU_DEAD: + case CPU_DEAD_FROZEN: sysdev_remove_file(s, &attr_capability); break; } diff --git a/arch/sh/boards/se/7751/setup.c b/arch/sh/boards/se/7751/setup.c index 770defed9c4a..52c7bfa57c2c 100644 --- a/arch/sh/boards/se/7751/setup.c +++ b/arch/sh/boards/se/7751/setup.c @@ -1,5 +1,5 @@ /* - * linux/arch/sh/kernel/setup_7751se.c + * linux/arch/sh/boards/se/7751/setup.c * * Copyright (C) 2000 Kazumoto Kojima * diff --git a/arch/sh/kernel/cpu/sh3/entry.S b/arch/sh/kernel/cpu/sh3/entry.S index f3e827f29a46..832c0b4a1e6c 100644 --- a/arch/sh/kernel/cpu/sh3/entry.S +++ b/arch/sh/kernel/cpu/sh3/entry.S @@ -1,5 +1,5 @@ /* - * arch/sh/kernel/entry.S + * arch/sh/kernel/cpu/sh3/entry.S * * Copyright (C) 1999, 2000, 2002 Niibe Yutaka * Copyright (C) 2003 - 2006 Paul Mundt diff --git a/arch/sh/kernel/cpu/sh4a/clock-sh73180.c b/arch/sh/kernel/cpu/sh4a/clock-sh73180.c index 2fa5cb2ae68d..6d5ba373a75e 100644 --- a/arch/sh/kernel/cpu/sh4a/clock-sh73180.c +++ b/arch/sh/kernel/cpu/sh4a/clock-sh73180.c @@ -1,5 +1,5 @@ /* - * arch/sh/kernel/cpu/sh4/clock-sh73180.c + * arch/sh/kernel/cpu/sh4a/clock-sh73180.c * * SH73180 support for the clock framework * diff --git a/arch/sh/kernel/cpu/sh4a/clock-sh7343.c b/arch/sh/kernel/cpu/sh4a/clock-sh7343.c index 1707a213f0cf..7adc4f16e95a 100644 --- a/arch/sh/kernel/cpu/sh4a/clock-sh7343.c +++ b/arch/sh/kernel/cpu/sh4a/clock-sh7343.c @@ -1,5 +1,5 @@ /* - * arch/sh/kernel/cpu/sh4/clock-sh7343.c + * arch/sh/kernel/cpu/sh4a/clock-sh7343.c * * SH7343/SH7722 support for the clock framework * diff --git a/arch/sh/kernel/cpu/sh4a/clock-sh7770.c b/arch/sh/kernel/cpu/sh4a/clock-sh7770.c index c8694bac6477..8e236062c721 100644 --- a/arch/sh/kernel/cpu/sh4a/clock-sh7770.c +++ b/arch/sh/kernel/cpu/sh4a/clock-sh7770.c @@ -1,5 +1,5 @@ /* - * arch/sh/kernel/cpu/sh4/clock-sh7770.c + * arch/sh/kernel/cpu/sh4a/clock-sh7770.c * * SH7770 support for the clock framework * diff --git a/arch/sh/kernel/cpu/sh4a/clock-sh7780.c b/arch/sh/kernel/cpu/sh4a/clock-sh7780.c index 9e6a216750c8..01f3da619d3d 100644 --- a/arch/sh/kernel/cpu/sh4a/clock-sh7780.c +++ b/arch/sh/kernel/cpu/sh4a/clock-sh7780.c @@ -1,5 +1,5 @@ /* - * arch/sh/kernel/cpu/sh4/clock-sh7780.c + * arch/sh/kernel/cpu/sh4a/clock-sh7780.c * * SH7780 support for the clock framework * diff --git a/arch/sh/kernel/vsyscall/vsyscall.c b/arch/sh/kernel/vsyscall/vsyscall.c index 7b0f66f03319..e146bafcd14f 100644 --- a/arch/sh/kernel/vsyscall/vsyscall.c +++ b/arch/sh/kernel/vsyscall/vsyscall.c @@ -1,5 +1,5 @@ /* - * arch/sh/kernel/vsyscall.c + * arch/sh/kernel/vsyscall/vsyscall.c * * Copyright (C) 2006 Paul Mundt * diff --git a/arch/sparc/kernel/asm-offsets.c b/arch/sparc/kernel/asm-offsets.c index 29d7cfd1c970..6773ed76e414 100644 --- a/arch/sparc/kernel/asm-offsets.c +++ b/arch/sparc/kernel/asm-offsets.c @@ -28,7 +28,7 @@ int foo(void) DEFINE(AOFF_task_gid, offsetof(struct task_struct, gid)); DEFINE(AOFF_task_euid, offsetof(struct task_struct, euid)); DEFINE(AOFF_task_egid, offsetof(struct task_struct, egid)); - /* DEFINE(THREAD_INFO, offsetof(struct task_struct, thread_info)); */ + /* DEFINE(THREAD_INFO, offsetof(struct task_struct, stack)); */ DEFINE(ASIZ_task_uid, sizeof(current->uid)); DEFINE(ASIZ_task_gid, sizeof(current->gid)); DEFINE(ASIZ_task_euid, sizeof(current->euid)); diff --git a/arch/sparc64/kernel/traps.c b/arch/sparc64/kernel/traps.c index dc652f210290..d0fde36395b4 100644 --- a/arch/sparc64/kernel/traps.c +++ b/arch/sparc64/kernel/traps.c @@ -19,6 +19,7 @@ #include <linux/init.h> #include <linux/kdebug.h> +#include <asm/smp.h> #include <asm/delay.h> #include <asm/system.h> #include <asm/ptrace.h> diff --git a/arch/um/Kconfig b/arch/um/Kconfig index 354cc6b70530..b9c0f307a8fa 100644 --- a/arch/um/Kconfig +++ b/arch/um/Kconfig @@ -320,21 +320,7 @@ source "crypto/Kconfig" source "lib/Kconfig" -menu "SCSI support" -depends on BROKEN - -config SCSI - tristate "SCSI support" - -# This gives us free_dma, which scsi.c wants. -config GENERIC_ISA_DMA - bool - depends on SCSI - default y - -source "arch/um/Kconfig.scsi" - -endmenu +source "drivers/scsi/Kconfig" source "drivers/md/Kconfig" diff --git a/arch/um/Kconfig.scsi b/arch/um/Kconfig.scsi deleted file mode 100644 index c291c942b1a8..000000000000 --- a/arch/um/Kconfig.scsi +++ /dev/null @@ -1,58 +0,0 @@ -comment "SCSI support type (disk, tape, CD-ROM)" - depends on SCSI - -config BLK_DEV_SD - tristate "SCSI disk support" - depends on SCSI - -config SD_EXTRA_DEVS - int "Maximum number of SCSI disks that can be loaded as modules" - depends on BLK_DEV_SD - default "40" - -config CHR_DEV_ST - tristate "SCSI tape support" - depends on SCSI - -config BLK_DEV_SR - tristate "SCSI CD-ROM support" - depends on SCSI - -config BLK_DEV_SR_VENDOR - bool "Enable vendor-specific extensions (for SCSI CDROM)" - depends on BLK_DEV_SR - -config SR_EXTRA_DEVS - int "Maximum number of CDROM devices that can be loaded as modules" - depends on BLK_DEV_SR - default "2" - -config CHR_DEV_SG - tristate "SCSI generic support" - depends on SCSI - -comment "Some SCSI devices (e.g. CD jukebox) support multiple LUNs" - depends on SCSI - -#if [ "$CONFIG_EXPERIMENTAL" = "y" ]; then -config SCSI_DEBUG_QUEUES - bool "Enable extra checks in new queueing code" - depends on SCSI - -#fi -config SCSI_MULTI_LUN - bool "Probe all LUNs on each SCSI device" - depends on SCSI - -config SCSI_CONSTANTS - bool "Verbose SCSI error reporting (kernel size +=12K)" - depends on SCSI - -config SCSI_LOGGING - bool "SCSI logging facility" - depends on SCSI - -config SCSI_DEBUG - tristate "SCSI debugging host simulator (EXPERIMENTAL)" - depends on SCSI - diff --git a/arch/um/include/sysdep-i386/archsetjmp.h b/arch/um/include/sysdep-i386/archsetjmp.h index 11bafab669e9..0f312085ce1d 100644 --- a/arch/um/include/sysdep-i386/archsetjmp.h +++ b/arch/um/include/sysdep-i386/archsetjmp.h @@ -1,5 +1,5 @@ /* - * arch/i386/include/klibc/archsetjmp.h + * arch/um/include/sysdep-i386/archsetjmp.h */ #ifndef _KLIBC_ARCHSETJMP_H diff --git a/arch/um/include/sysdep-x86_64/archsetjmp.h b/arch/um/include/sysdep-x86_64/archsetjmp.h index 9a5e1a6ec800..2af8f12ca161 100644 --- a/arch/um/include/sysdep-x86_64/archsetjmp.h +++ b/arch/um/include/sysdep-x86_64/archsetjmp.h @@ -1,5 +1,5 @@ /* - * arch/x86_64/include/klibc/archsetjmp.h + * arch/um/include/sysdep-x86_64/archsetjmp.h */ #ifndef _KLIBC_ARCHSETJMP_H diff --git a/arch/um/kernel/skas/process.c b/arch/um/kernel/skas/process.c index ef36facd8fe9..a96ae1a0610e 100644 --- a/arch/um/kernel/skas/process.c +++ b/arch/um/kernel/skas/process.c @@ -178,20 +178,23 @@ int start_uml_skas(void) int external_pid_skas(struct task_struct *task) { -#warning Need to look up userspace_pid by cpu + /* FIXME: Need to look up userspace_pid by cpu */ return(userspace_pid[0]); } int thread_pid_skas(struct task_struct *task) { -#warning Need to look up userspace_pid by cpu + /* FIXME: Need to look up userspace_pid by cpu */ return(userspace_pid[0]); } void kill_off_processes_skas(void) { if(proc_mm) -#warning need to loop over userspace_pids in kill_off_processes_skas + /* + * FIXME: need to loop over userspace_pids in + * kill_off_processes_skas + */ os_kill_ptraced_process(userspace_pid[0], 1); else { struct task_struct *p; diff --git a/arch/um/os-Linux/process.c b/arch/um/os-Linux/process.c index 92a7b59120d6..2d9d2ca39299 100644 --- a/arch/um/os-Linux/process.c +++ b/arch/um/os-Linux/process.c @@ -239,6 +239,7 @@ out: return ok; } +#ifdef UML_CONFIG_MODE_TT void init_new_thread_stack(void *sig_stack, void (*usr1_handler)(int)) { int flags = 0, pages; @@ -260,6 +261,7 @@ void init_new_thread_stack(void *sig_stack, void (*usr1_handler)(int)) "errno = %d\n", errno); } } +#endif void init_new_thread_signals(void) { diff --git a/arch/um/os-Linux/skas/mem.c b/arch/um/os-Linux/skas/mem.c index 8e490fff3d47..5c8946320799 100644 --- a/arch/um/os-Linux/skas/mem.c +++ b/arch/um/os-Linux/skas/mem.c @@ -68,7 +68,7 @@ static inline long do_syscall_stub(struct mm_id * mm_idp, void **addr) int err, pid = mm_idp->u.pid; if(proc_mm) -#warning Need to look up userspace_pid by cpu + /* FIXME: Need to look up userspace_pid by cpu */ pid = userspace_pid[0]; multi_count++; diff --git a/arch/um/os-Linux/skas/process.c b/arch/um/os-Linux/skas/process.c index 5c088a55396c..6a0e466d01e3 100644 --- a/arch/um/os-Linux/skas/process.c +++ b/arch/um/os-Linux/skas/process.c @@ -586,7 +586,7 @@ void switch_mm_skas(struct mm_id *mm_idp) { int err; -#warning need cpu pid in switch_mm_skas + /* FIXME: need cpu pid in switch_mm_skas */ if(proc_mm){ err = ptrace(PTRACE_SWITCH_MM, userspace_pid[0], 0, mm_idp->u.mm_fd); diff --git a/arch/v850/kernel/asm-offsets.c b/arch/v850/kernel/asm-offsets.c index 24f291369070..cee5c3142d41 100644 --- a/arch/v850/kernel/asm-offsets.c +++ b/arch/v850/kernel/asm-offsets.c @@ -29,7 +29,7 @@ int main (void) DEFINE (TASK_PTRACE, offsetof (struct task_struct, ptrace)); DEFINE (TASK_BLOCKED, offsetof (struct task_struct, blocked)); DEFINE (TASK_THREAD, offsetof (struct task_struct, thread)); - DEFINE (TASK_THREAD_INFO, offsetof (struct task_struct, thread_info)); + DEFINE (TASK_THREAD_INFO, offsetof (struct task_struct, stack)); DEFINE (TASK_MM, offsetof (struct task_struct, mm)); DEFINE (TASK_ACTIVE_MM, offsetof (struct task_struct, active_mm)); DEFINE (TASK_PID, offsetof (struct task_struct, pid)); diff --git a/arch/v850/kernel/entry.S b/arch/v850/kernel/entry.S index 8bc521ca081f..e4327a8d6bcd 100644 --- a/arch/v850/kernel/entry.S +++ b/arch/v850/kernel/entry.S @@ -523,7 +523,7 @@ END(ret_from_trap) /* This the initial entry point for a new child thread, with an appropriate - stack in place that makes it look the the child is in the middle of an + stack in place that makes it look that the child is in the middle of an syscall. This function is actually `returned to' from switch_thread (copy_thread makes ret_from_fork the return address in each new thread's saved context). */ diff --git a/arch/x86_64/kernel/io_apic.c b/arch/x86_64/kernel/io_apic.c index 4d582589fa89..d8bfe315471c 100644 --- a/arch/x86_64/kernel/io_apic.c +++ b/arch/x86_64/kernel/io_apic.c @@ -1413,7 +1413,7 @@ static void ack_apic_level(unsigned int irq) /* * We must acknowledge the irq before we move it or the acknowledge will - * not propogate properly. + * not propagate properly. */ ack_APIC_irq(); diff --git a/arch/x86_64/kernel/irq.c b/arch/x86_64/kernel/irq.c index 3bc30d2c13d3..3eaceac32481 100644 --- a/arch/x86_64/kernel/irq.c +++ b/arch/x86_64/kernel/irq.c @@ -32,7 +32,7 @@ atomic_t irq_err_count; */ static inline void stack_overflow_check(struct pt_regs *regs) { - u64 curbase = (u64) current->thread_info; + u64 curbase = (u64)task_stack_page(current); static unsigned long warned = -60*HZ; if (regs->rsp >= curbase && regs->rsp <= curbase + THREAD_SIZE && diff --git a/arch/x86_64/kernel/mce.c b/arch/x86_64/kernel/mce.c index 442169640e45..a14375dd5425 100644 --- a/arch/x86_64/kernel/mce.c +++ b/arch/x86_64/kernel/mce.c @@ -720,9 +720,11 @@ mce_cpu_callback(struct notifier_block *nfb, unsigned long action, void *hcpu) switch (action) { case CPU_ONLINE: + case CPU_ONLINE_FROZEN: mce_create_device(cpu); break; case CPU_DEAD: + case CPU_DEAD_FROZEN: mce_remove_device(cpu); break; } diff --git a/arch/x86_64/kernel/mce_amd.c b/arch/x86_64/kernel/mce_amd.c index d0bd5d66e103..03356e64f9c8 100644 --- a/arch/x86_64/kernel/mce_amd.c +++ b/arch/x86_64/kernel/mce_amd.c @@ -654,9 +654,11 @@ static int threshold_cpu_callback(struct notifier_block *nfb, switch (action) { case CPU_ONLINE: + case CPU_ONLINE_FROZEN: threshold_create_device(cpu); break; case CPU_DEAD: + case CPU_DEAD_FROZEN: threshold_remove_device(cpu); break; default: diff --git a/arch/x86_64/kernel/vsyscall.c b/arch/x86_64/kernel/vsyscall.c index dc32cef96195..51d4c6fa88c8 100644 --- a/arch/x86_64/kernel/vsyscall.c +++ b/arch/x86_64/kernel/vsyscall.c @@ -327,7 +327,7 @@ static int __cpuinit cpu_vsyscall_notifier(struct notifier_block *n, unsigned long action, void *arg) { long cpu = (long)arg; - if (action == CPU_ONLINE) + if (action == CPU_ONLINE || action == CPU_ONLINE_FROZEN) smp_call_function_single(cpu, cpu_vsyscall_init, NULL, 0, 1); return NOTIFY_DONE; } diff --git a/arch/xtensa/kernel/asm-offsets.c b/arch/xtensa/kernel/asm-offsets.c index b256cfbef344..698079b3a336 100644 --- a/arch/xtensa/kernel/asm-offsets.c +++ b/arch/xtensa/kernel/asm-offsets.c @@ -70,7 +70,7 @@ int main(void) DEFINE(TASK_ACTIVE_MM, offsetof (struct task_struct, active_mm)); DEFINE(TASK_PID, offsetof (struct task_struct, pid)); DEFINE(TASK_THREAD, offsetof (struct task_struct, thread)); - DEFINE(TASK_THREAD_INFO, offsetof (struct task_struct, thread_info)); + DEFINE(TASK_THREAD_INFO, offsetof (struct task_struct, stack)); DEFINE(TASK_STRUCT_SIZE, sizeof (struct task_struct)); BLANK(); diff --git a/arch/xtensa/kernel/pci-dma.c b/arch/xtensa/kernel/pci-dma.c index ca76f071666e..f5319d78c876 100644 --- a/arch/xtensa/kernel/pci-dma.c +++ b/arch/xtensa/kernel/pci-dma.c @@ -1,5 +1,5 @@ /* - * arch/xtensa/pci-dma.c + * arch/xtensa/kernel/pci-dma.c * * DMA coherent memory allocation. * diff --git a/block/as-iosched.c b/block/as-iosched.c index 640aa839d63f..109e91b91ffa 100644 --- a/block/as-iosched.c +++ b/block/as-iosched.c @@ -1306,7 +1306,7 @@ static void as_exit_queue(elevator_t *e) struct as_data *ad = e->elevator_data; del_timer_sync(&ad->antic_timer); - kblockd_flush(); + kblockd_flush_work(&ad->antic_work); BUG_ON(!list_empty(&ad->fifo_list[REQ_SYNC])); BUG_ON(!list_empty(&ad->fifo_list[REQ_ASYNC])); diff --git a/block/genhd.c b/block/genhd.c index b5664440896c..93a2cf654597 100644 --- a/block/genhd.c +++ b/block/genhd.c @@ -213,6 +213,59 @@ struct gendisk *get_gendisk(dev_t dev, int *part) return kobj ? to_disk(kobj) : NULL; } +/* + * print a full list of all partitions - intended for places where the root + * filesystem can't be mounted and thus to give the victim some idea of what + * went wrong + */ +void __init printk_all_partitions(void) +{ + int n; + struct gendisk *sgp; + + mutex_lock(&block_subsys_lock); + /* For each block device... */ + list_for_each_entry(sgp, &block_subsys.list, kobj.entry) { + char buf[BDEVNAME_SIZE]; + /* + * Don't show empty devices or things that have been surpressed + */ + if (get_capacity(sgp) == 0 || + (sgp->flags & GENHD_FL_SUPPRESS_PARTITION_INFO)) + continue; + + /* + * Note, unlike /proc/partitions, I am showing the numbers in + * hex - the same format as the root= option takes. + */ + printk("%02x%02x %10llu %s", + sgp->major, sgp->first_minor, + (unsigned long long)get_capacity(sgp) >> 1, + disk_name(sgp, 0, buf)); + if (sgp->driverfs_dev != NULL && + sgp->driverfs_dev->driver != NULL) + printk(" driver: %s\n", + sgp->driverfs_dev->driver->name); + else + printk(" (driver?)\n"); + + /* now show the partitions */ + for (n = 0; n < sgp->minors - 1; ++n) { + if (sgp->part[n] == NULL) + continue; + if (sgp->part[n]->nr_sects == 0) + continue; + printk(" %02x%02x %10llu %s\n", + sgp->major, n + 1 + sgp->first_minor, + (unsigned long long)sgp->part[n]->nr_sects >> 1, + disk_name(sgp, n + 1, buf)); + } /* partition subloop */ + } /* Block device loop */ + + mutex_unlock(&block_subsys_lock); + return; +} + #ifdef CONFIG_PROC_FS /* iterator */ static void *part_start(struct seq_file *part, loff_t *pos) diff --git a/block/ll_rw_blk.c b/block/ll_rw_blk.c index d99d402953a3..17e188973428 100644 --- a/block/ll_rw_blk.c +++ b/block/ll_rw_blk.c @@ -1704,7 +1704,7 @@ EXPORT_SYMBOL(blk_stop_queue); * on a queue, such as calling the unplug function after a timeout. * A block device may call blk_sync_queue to ensure that any * such activity is cancelled, thus allowing it to release resources - * the the callbacks might use. The caller must already have made sure + * that the callbacks might use. The caller must already have made sure * that its ->make_request_fn will not re-add plugging prior to calling * this function. * @@ -1712,7 +1712,6 @@ EXPORT_SYMBOL(blk_stop_queue); void blk_sync_queue(struct request_queue *q) { del_timer_sync(&q->unplug_timer); - kblockd_flush(); } EXPORT_SYMBOL(blk_sync_queue); @@ -3508,7 +3507,7 @@ static int blk_cpu_notify(struct notifier_block *self, unsigned long action, * If a CPU goes away, splice its entries to the current CPU * and trigger a run of the softirq */ - if (action == CPU_DEAD) { + if (action == CPU_DEAD || action == CPU_DEAD_FROZEN) { int cpu = (unsigned long) hcpu; local_irq_disable(); @@ -3632,11 +3631,11 @@ int kblockd_schedule_work(struct work_struct *work) EXPORT_SYMBOL(kblockd_schedule_work); -void kblockd_flush(void) +void kblockd_flush_work(struct work_struct *work) { - flush_workqueue(kblockd_workqueue); + cancel_work_sync(work); } -EXPORT_SYMBOL(kblockd_flush); +EXPORT_SYMBOL(kblockd_flush_work); int __init blk_dev_init(void) { diff --git a/crypto/Kconfig b/crypto/Kconfig index 620e14cabdc6..4ca0ab3448d9 100644 --- a/crypto/Kconfig +++ b/crypto/Kconfig @@ -271,7 +271,7 @@ config CRYPTO_SERPENT Keys are allowed to be from 0 to 256 bits in length, in steps of 8 bits. Also includes the 'Tnepres' algorithm, a reversed - variant of Serpent for compatibility with old kerneli code. + variant of Serpent for compatibility with old kerneli.org code. See also: <http://www.cl.cam.ac.uk/~rja14/serpent.html> diff --git a/drivers/acpi/sleep/main.c b/drivers/acpi/sleep/main.c index f8c63410bcbf..52b23471dd69 100644 --- a/drivers/acpi/sleep/main.c +++ b/drivers/acpi/sleep/main.c @@ -29,7 +29,6 @@ static u32 acpi_suspend_states[] = { [PM_SUSPEND_ON] = ACPI_STATE_S0, [PM_SUSPEND_STANDBY] = ACPI_STATE_S1, [PM_SUSPEND_MEM] = ACPI_STATE_S3, - [PM_SUSPEND_DISK] = ACPI_STATE_S4, [PM_SUSPEND_MAX] = ACPI_STATE_S5 }; @@ -94,14 +93,6 @@ static int acpi_pm_enter(suspend_state_t pm_state) do_suspend_lowlevel(); break; - case PM_SUSPEND_DISK: - if (acpi_pm_ops.pm_disk_mode == PM_DISK_PLATFORM) - status = acpi_enter_sleep_state(acpi_state); - break; - case PM_SUSPEND_MAX: - acpi_power_off(); - break; - default: return -EINVAL; } @@ -157,12 +148,13 @@ int acpi_suspend(u32 acpi_state) suspend_state_t states[] = { [1] = PM_SUSPEND_STANDBY, [3] = PM_SUSPEND_MEM, - [4] = PM_SUSPEND_DISK, [5] = PM_SUSPEND_MAX }; if (acpi_state < 6 && states[acpi_state]) return pm_suspend(states[acpi_state]); + if (acpi_state == 4) + return hibernate(); return -EINVAL; } @@ -189,6 +181,49 @@ static struct pm_ops acpi_pm_ops = { .finish = acpi_pm_finish, }; +#ifdef CONFIG_SOFTWARE_SUSPEND +static int acpi_hibernation_prepare(void) +{ + return acpi_sleep_prepare(ACPI_STATE_S4); +} + +static int acpi_hibernation_enter(void) +{ + acpi_status status = AE_OK; + unsigned long flags = 0; + + ACPI_FLUSH_CPU_CACHE(); + + local_irq_save(flags); + acpi_enable_wakeup_device(ACPI_STATE_S4); + /* This shouldn't return. If it returns, we have a problem */ + status = acpi_enter_sleep_state(ACPI_STATE_S4); + local_irq_restore(flags); + + return ACPI_SUCCESS(status) ? 0 : -EFAULT; +} + +static void acpi_hibernation_finish(void) +{ + acpi_leave_sleep_state(ACPI_STATE_S4); + acpi_disable_wakeup_device(ACPI_STATE_S4); + + /* reset firmware waking vector */ + acpi_set_firmware_waking_vector((acpi_physical_address) 0); + + if (init_8259A_after_S1) { + printk("Broken toshiba laptop -> kicking interrupts\n"); + init_8259A(0); + } +} + +static struct hibernation_ops acpi_hibernation_ops = { + .prepare = acpi_hibernation_prepare, + .enter = acpi_hibernation_enter, + .finish = acpi_hibernation_finish, +}; +#endif /* CONFIG_SOFTWARE_SUSPEND */ + /* * Toshiba fails to preserve interrupts over S1, reinitialization * of 8259 is needed after S1 resume. @@ -227,14 +262,18 @@ int __init acpi_sleep_init(void) sleep_states[i] = 1; printk(" S%d", i); } - if (i == ACPI_STATE_S4) { - if (sleep_states[i]) - acpi_pm_ops.pm_disk_mode = PM_DISK_PLATFORM; - } } printk(")\n"); pm_set_ops(&acpi_pm_ops); + +#ifdef CONFIG_SOFTWARE_SUSPEND + if (sleep_states[ACPI_STATE_S4]) + hibernation_set_ops(&acpi_hibernation_ops); +#else + sleep_states[ACPI_STATE_S4] = 0; +#endif + return 0; } diff --git a/drivers/acpi/sleep/proc.c b/drivers/acpi/sleep/proc.c index 5a76e5be61d5..76b45f0b8341 100644 --- a/drivers/acpi/sleep/proc.c +++ b/drivers/acpi/sleep/proc.c @@ -60,7 +60,7 @@ acpi_system_write_sleep(struct file *file, state = simple_strtoul(str, NULL, 0); #ifdef CONFIG_SOFTWARE_SUSPEND if (state == 4) { - error = pm_suspend(PM_SUSPEND_DISK); + error = hibernate(); goto Done; } #endif diff --git a/drivers/ata/Kconfig b/drivers/ata/Kconfig index 45dbdc14915f..c7219663f2b9 100644 --- a/drivers/ata/Kconfig +++ b/drivers/ata/Kconfig @@ -435,7 +435,7 @@ config PATA_OPTIDMA help This option enables DMA/PIO support for the later OPTi controllers found on some old motherboards and in some - latops + laptops. If unsure, say N. diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c index a7950885d18e..fef87dd70d17 100644 --- a/drivers/ata/libata-core.c +++ b/drivers/ata/libata-core.c @@ -1316,7 +1316,7 @@ void ata_port_flush_task(struct ata_port *ap) spin_unlock_irqrestore(ap->lock, flags); DPRINTK("flush #1\n"); - flush_workqueue(ata_wq); + cancel_work_sync(&ap->port_task.work); /* akpm: seems unneeded */ /* * At this point, if a task is running, it's guaranteed to see @@ -1327,7 +1327,7 @@ void ata_port_flush_task(struct ata_port *ap) if (ata_msg_ctl(ap)) ata_port_printk(ap, KERN_DEBUG, "%s: flush #2\n", __FUNCTION__); - flush_workqueue(ata_wq); + cancel_work_sync(&ap->port_task.work); } spin_lock_irqsave(ap->lock, flags); @@ -6475,9 +6475,9 @@ void ata_port_detach(struct ata_port *ap) /* Flush hotplug task. The sequence is similar to * ata_port_flush_task(). */ - flush_workqueue(ata_aux_wq); + cancel_work_sync(&ap->hotplug_task.work); /* akpm: why? */ cancel_delayed_work(&ap->hotplug_task); - flush_workqueue(ata_aux_wq); + cancel_work_sync(&ap->hotplug_task.work); skip_eh: /* remove the associated SCSI host */ diff --git a/drivers/base/devres.c b/drivers/base/devres.c index e177c9533b6c..e1c0730a3b99 100644 --- a/drivers/base/devres.c +++ b/drivers/base/devres.c @@ -101,19 +101,6 @@ static void add_dr(struct device *dev, struct devres_node *node) list_add_tail(&node->entry, &dev->devres_head); } -/** - * devres_alloc - Allocate device resource data - * @release: Release function devres will be associated with - * @size: Allocation size - * @gfp: Allocation flags - * - * allocate devres of @size bytes. The allocated area is zeroed, then - * associated with @release. The returned pointer can be passed to - * other devres_*() functions. - * - * RETURNS: - * Pointer to allocated devres on success, NULL on failure. - */ #ifdef CONFIG_DEBUG_DEVRES void * __devres_alloc(dr_release_t release, size_t size, gfp_t gfp, const char *name) @@ -128,6 +115,19 @@ void * __devres_alloc(dr_release_t release, size_t size, gfp_t gfp, } EXPORT_SYMBOL_GPL(__devres_alloc); #else +/** + * devres_alloc - Allocate device resource data + * @release: Release function devres will be associated with + * @size: Allocation size + * @gfp: Allocation flags + * + * Allocate devres of @size bytes. The allocated area is zeroed, then + * associated with @release. The returned pointer can be passed to + * other devres_*() functions. + * + * RETURNS: + * Pointer to allocated devres on success, NULL on failure. + */ void * devres_alloc(dr_release_t release, size_t size, gfp_t gfp) { struct devres *dr; @@ -416,7 +416,7 @@ static int release_nodes(struct device *dev, struct list_head *first, } /** - * devres_release_all - Release all resources + * devres_release_all - Release all managed resources * @dev: Device to release resources for * * Release all resources associated with @dev. This function is @@ -600,7 +600,7 @@ static int devm_kzalloc_match(struct device *dev, void *res, void *data) } /** - * devm_kzalloc - Managed kzalloc + * devm_kzalloc - Resource-managed kzalloc * @dev: Device to allocate memory for * @size: Allocation size * @gfp: Allocation gfp flags @@ -628,7 +628,7 @@ void * devm_kzalloc(struct device *dev, size_t size, gfp_t gfp) EXPORT_SYMBOL_GPL(devm_kzalloc); /** - * devm_kfree - Managed kfree + * devm_kfree - Resource-managed kfree * @dev: Device this memory belongs to * @p: Memory to free * diff --git a/drivers/base/platform.c b/drivers/base/platform.c index eb84d9d44645..869ff8c00146 100644 --- a/drivers/base/platform.c +++ b/drivers/base/platform.c @@ -360,7 +360,7 @@ EXPORT_SYMBOL_GPL(platform_device_unregister); * This function creates a simple platform device that requires minimal * resource and memory management. Canned release function freeing * memory allocated for the device allows drivers using such devices - * to be unloaded iwithout waiting for the last reference to the device + * to be unloaded without waiting for the last reference to the device * to be dropped. * * This interface is primarily intended for use with legacy drivers diff --git a/drivers/base/topology.c b/drivers/base/topology.c index 067a9e8bc377..8d8cdfec6529 100644 --- a/drivers/base/topology.c +++ b/drivers/base/topology.c @@ -126,10 +126,13 @@ static int __cpuinit topology_cpu_callback(struct notifier_block *nfb, switch (action) { case CPU_UP_PREPARE: + case CPU_UP_PREPARE_FROZEN: rc = topology_add_dev(cpu); break; case CPU_UP_CANCELED: + case CPU_UP_CANCELED_FROZEN: case CPU_DEAD: + case CPU_DEAD_FROZEN: topology_remove_dev(cpu); break; } diff --git a/drivers/block/loop.c b/drivers/block/loop.c index af6d7274a7cc..18cdd8c77626 100644 --- a/drivers/block/loop.c +++ b/drivers/block/loop.c @@ -243,17 +243,13 @@ static int do_lo_send_aops(struct loop_device *lo, struct bio_vec *bvec, transfer_result = lo_do_transfer(lo, WRITE, page, offset, bvec->bv_page, bv_offs, size, IV); if (unlikely(transfer_result)) { - char *kaddr; - /* * The transfer failed, but we still write the data to * keep prepare/commit calls balanced. */ printk(KERN_ERR "loop: transfer error block %llu\n", (unsigned long long)index); - kaddr = kmap_atomic(page, KM_USER0); - memset(kaddr + offset, 0, size); - kunmap_atomic(kaddr, KM_USER0); + zero_user_page(page, offset, size, KM_USER0); } flush_dcache_page(page); ret = aops->commit_write(file, page, offset, diff --git a/drivers/block/nbd.c b/drivers/block/nbd.c index 090796bef78f..069ae39a9cd9 100644 --- a/drivers/block/nbd.c +++ b/drivers/block/nbd.c @@ -366,20 +366,25 @@ static struct disk_attribute pid_attr = { .show = pid_show, }; -static void nbd_do_it(struct nbd_device *lo) +static int nbd_do_it(struct nbd_device *lo) { struct request *req; + int ret; BUG_ON(lo->magic != LO_MAGIC); lo->pid = current->pid; - sysfs_create_file(&lo->disk->kobj, &pid_attr.attr); + ret = sysfs_create_file(&lo->disk->kobj, &pid_attr.attr); + if (ret) { + printk(KERN_ERR "nbd: sysfs_create_file failed!"); + return ret; + } while ((req = nbd_read_stat(lo)) != NULL) nbd_end_request(req); sysfs_remove_file(&lo->disk->kobj, &pid_attr.attr); - return; + return 0; } static void nbd_clear_que(struct nbd_device *lo) @@ -569,7 +574,9 @@ static int nbd_ioctl(struct inode *inode, struct file *file, case NBD_DO_IT: if (!lo->file) return -EINVAL; - nbd_do_it(lo); + error = nbd_do_it(lo); + if (error) + return error; /* on return tidy up in case we have a signal */ /* Forcibly shutdown the socket causing all listeners * to error diff --git a/drivers/block/rd.c b/drivers/block/rd.c index 43d4ebcb3b44..a1512da32410 100644 --- a/drivers/block/rd.c +++ b/drivers/block/rd.c @@ -151,7 +151,7 @@ static int ramdisk_commit_write(struct file *file, struct page *page, } /* - * ->writepage to the the blockdev's mapping has to redirty the page so that the + * ->writepage to the blockdev's mapping has to redirty the page so that the * VM doesn't go and steal it. We return AOP_WRITEPAGE_ACTIVATE so that the VM * won't try to (pointlessly) write the page again for a while. * diff --git a/drivers/char/drm/drm_dma.c b/drivers/char/drm/drm_dma.c index 892db7096986..32ed19c9ec1c 100644 --- a/drivers/char/drm/drm_dma.c +++ b/drivers/char/drm/drm_dma.c @@ -65,7 +65,7 @@ int drm_dma_setup(drm_device_t * dev) * \param dev DRM device. * * Free all pages associated with DMA buffers, the buffers and pages lists, and - * finally the the drm_device::dma structure itself. + * finally the drm_device::dma structure itself. */ void drm_dma_takedown(drm_device_t * dev) { diff --git a/drivers/char/drm/drm_vm.c b/drivers/char/drm/drm_vm.c index 35540cfb43dd..b5c5b9fa84c3 100644 --- a/drivers/char/drm/drm_vm.c +++ b/drivers/char/drm/drm_vm.c @@ -157,7 +157,7 @@ static __inline__ struct page *drm_do_vm_nopage(struct vm_area_struct *vma, * \param address access address. * \return pointer to the page structure. * - * Get the the mapping, find the real physical page to map, get the page, and + * Get the mapping, find the real physical page to map, get the page, and * return it. */ static __inline__ struct page *drm_do_vm_shm_nopage(struct vm_area_struct *vma, diff --git a/drivers/char/drm/r300_reg.h b/drivers/char/drm/r300_reg.h index a881f96c983e..ecda760ae8c0 100644 --- a/drivers/char/drm/r300_reg.h +++ b/drivers/char/drm/r300_reg.h @@ -293,7 +293,7 @@ I am fairly certain that they are correct unless stated otherwise in comments. # define R300_PVS_CNTL_1_PROGRAM_START_SHIFT 0 # define R300_PVS_CNTL_1_POS_END_SHIFT 10 # define R300_PVS_CNTL_1_PROGRAM_END_SHIFT 20 -/* Addresses are relative the the vertex program parameters area. */ +/* Addresses are relative to the vertex program parameters area. */ #define R300_VAP_PVS_CNTL_2 0x22D4 # define R300_PVS_CNTL_2_PARAM_OFFSET_SHIFT 0 # define R300_PVS_CNTL_2_PARAM_COUNT_SHIFT 16 diff --git a/drivers/char/genrtc.c b/drivers/char/genrtc.c index 49f914e79216..9e1fc02967ff 100644 --- a/drivers/char/genrtc.c +++ b/drivers/char/genrtc.c @@ -12,7 +12,7 @@ * * This driver allows use of the real time clock (built into * nearly all computers) from user space. It exports the /dev/rtc - * interface supporting various ioctl() and also the /proc/dev/rtc + * interface supporting various ioctl() and also the /proc/driver/rtc * pseudo-file for status information. * * The ioctls can be used to set the interrupt behaviour where @@ -377,7 +377,7 @@ static int gen_rtc_release(struct inode *inode, struct file *file) #ifdef CONFIG_PROC_FS /* - * Info exported via "/proc/rtc". + * Info exported via "/proc/driver/rtc". */ static int gen_rtc_proc_output(char *buf) diff --git a/drivers/char/hw_random/Kconfig b/drivers/char/hw_random/Kconfig index 5f3acd8e64b8..7cda04b33534 100644 --- a/drivers/char/hw_random/Kconfig +++ b/drivers/char/hw_random/Kconfig @@ -91,3 +91,17 @@ config HW_RANDOM_OMAP module will be called omap-rng. If unsure, say Y. + +config HW_RANDOM_PASEMI + tristate "PA Semi HW Random Number Generator support" + depends on HW_RANDOM && PPC_PASEMI + default HW_RANDOM + ---help--- + This driver provides kernel-side support for the Random Number + Generator hardware found on PA6T-1682M processor. + + To compile this driver as a module, choose M here: the + module will be called pasemi-rng. + + If unsure, say Y. + diff --git a/drivers/char/hw_random/Makefile b/drivers/char/hw_random/Makefile index c41fa19454e3..c8b7300e2fb1 100644 --- a/drivers/char/hw_random/Makefile +++ b/drivers/char/hw_random/Makefile @@ -10,3 +10,4 @@ obj-$(CONFIG_HW_RANDOM_GEODE) += geode-rng.o obj-$(CONFIG_HW_RANDOM_VIA) += via-rng.o obj-$(CONFIG_HW_RANDOM_IXP4XX) += ixp4xx-rng.o obj-$(CONFIG_HW_RANDOM_OMAP) += omap-rng.o +obj-$(CONFIG_HW_RANDOM_PASEMI) += pasemi-rng.o diff --git a/drivers/char/hw_random/pasemi-rng.c b/drivers/char/hw_random/pasemi-rng.c new file mode 100644 index 000000000000..fa6040b6c8f2 --- /dev/null +++ b/drivers/char/hw_random/pasemi-rng.c @@ -0,0 +1,156 @@ +/* + * Copyright (C) 2006-2007 PA Semi, Inc + * + * Maintained by: Olof Johansson <olof@lixom.net> + * + * Driver for the PWRficient onchip rng + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ + +#include <linux/module.h> +#include <linux/kernel.h> +#include <linux/platform_device.h> +#include <linux/hw_random.h> +#include <asm/of_platform.h> +#include <asm/io.h> + +#define SDCRNG_CTL_REG 0x00 +#define SDCRNG_CTL_FVLD_M 0x0000f000 +#define SDCRNG_CTL_FVLD_S 12 +#define SDCRNG_CTL_KSZ 0x00000800 +#define SDCRNG_CTL_RSRC_CRG 0x00000010 +#define SDCRNG_CTL_RSRC_RRG 0x00000000 +#define SDCRNG_CTL_CE 0x00000004 +#define SDCRNG_CTL_RE 0x00000002 +#define SDCRNG_CTL_DR 0x00000001 +#define SDCRNG_CTL_SELECT_RRG_RNG (SDCRNG_CTL_RE | SDCRNG_CTL_RSRC_RRG) +#define SDCRNG_CTL_SELECT_CRG_RNG (SDCRNG_CTL_CE | SDCRNG_CTL_RSRC_CRG) +#define SDCRNG_VAL_REG 0x20 + +#define MODULE_NAME "pasemi_rng" + +static int pasemi_rng_data_present(struct hwrng *rng) +{ + void __iomem *rng_regs = (void __iomem *)rng->priv; + + return (in_le32(rng_regs + SDCRNG_CTL_REG) + & SDCRNG_CTL_FVLD_M) ? 1 : 0; +} + +static int pasemi_rng_data_read(struct hwrng *rng, u32 *data) +{ + void __iomem *rng_regs = (void __iomem *)rng->priv; + *data = in_le32(rng_regs + SDCRNG_VAL_REG); + return 4; +} + +static int pasemi_rng_init(struct hwrng *rng) +{ + void __iomem *rng_regs = (void __iomem *)rng->priv; + u32 ctl; + + ctl = SDCRNG_CTL_DR | SDCRNG_CTL_SELECT_RRG_RNG | SDCRNG_CTL_KSZ; + out_le32(rng_regs + SDCRNG_CTL_REG, ctl); + out_le32(rng_regs + SDCRNG_CTL_REG, ctl & ~SDCRNG_CTL_DR); + + return 0; +} + +static void pasemi_rng_cleanup(struct hwrng *rng) +{ + void __iomem *rng_regs = (void __iomem *)rng->priv; + u32 ctl; + + ctl = SDCRNG_CTL_RE | SDCRNG_CTL_CE; + out_le32(rng_regs + SDCRNG_CTL_REG, + in_le32(rng_regs + SDCRNG_CTL_REG) & ~ctl); +} + +static struct hwrng pasemi_rng = { + .name = MODULE_NAME, + .init = pasemi_rng_init, + .cleanup = pasemi_rng_cleanup, + .data_present = pasemi_rng_data_present, + .data_read = pasemi_rng_data_read, +}; + +static int __devinit rng_probe(struct of_device *ofdev, + const struct of_device_id *match) +{ + void __iomem *rng_regs; + struct device_node *rng_np = ofdev->node; + struct resource res; + int err = 0; + + err = of_address_to_resource(rng_np, 0, &res); + if (err) + return -ENODEV; + + rng_regs = ioremap(res.start, 0x100); + + if (!rng_regs) + return -ENOMEM; + + pasemi_rng.priv = (unsigned long)rng_regs; + + printk(KERN_INFO "Registering PA Semi RNG\n"); + + err = hwrng_register(&pasemi_rng); + + if (err) + iounmap(rng_regs); + + return err; +} + +static int __devexit rng_remove(struct of_device *dev) +{ + void __iomem *rng_regs = (void __iomem *)pasemi_rng.priv; + + hwrng_unregister(&pasemi_rng); + iounmap(rng_regs); + + return 0; +} + +static struct of_device_id rng_match[] = { + { + .compatible = "1682m-rng", + }, + {}, +}; + +static struct of_platform_driver rng_driver = { + .name = "pasemi-rng", + .match_table = rng_match, + .probe = rng_probe, + .remove = rng_remove, +}; + +static int __init rng_init(void) +{ + return of_register_platform_driver(&rng_driver); +} +module_init(rng_init); + +static void __exit rng_exit(void) +{ + of_unregister_platform_driver(&rng_driver); +} +module_exit(rng_exit); + +MODULE_LICENSE("GPL"); +MODULE_AUTHOR("Egor Martovetsky <egor@pasemi.com>"); +MODULE_DESCRIPTION("H/W RNG driver for PA Semi processor"); diff --git a/drivers/char/pcmcia/Kconfig b/drivers/char/pcmcia/Kconfig index 27c1179ee527..f25facd97bb4 100644 --- a/drivers/char/pcmcia/Kconfig +++ b/drivers/char/pcmcia/Kconfig @@ -21,6 +21,7 @@ config SYNCLINK_CS config CARDMAN_4000 tristate "Omnikey Cardman 4000 support" depends on PCMCIA + select BITREVERSE help Enable support for the Omnikey Cardman 4000 PCMCIA Smartcard reader. diff --git a/drivers/char/pcmcia/cm4000_cs.c b/drivers/char/pcmcia/cm4000_cs.c index e91b43a014b0..fee58e03dbe2 100644 --- a/drivers/char/pcmcia/cm4000_cs.c +++ b/drivers/char/pcmcia/cm4000_cs.c @@ -31,6 +31,7 @@ #include <linux/init.h> #include <linux/fs.h> #include <linux/delay.h> +#include <linux/bitrev.h> #include <asm/uaccess.h> #include <asm/io.h> @@ -194,41 +195,17 @@ static inline unsigned char xinb(unsigned short port) } #endif -#define b_0000 15 -#define b_0001 14 -#define b_0010 13 -#define b_0011 12 -#define b_0100 11 -#define b_0101 10 -#define b_0110 9 -#define b_0111 8 -#define b_1000 7 -#define b_1001 6 -#define b_1010 5 -#define b_1011 4 -#define b_1100 3 -#define b_1101 2 -#define b_1110 1 -#define b_1111 0 - -static unsigned char irtab[16] = { - b_0000, b_1000, b_0100, b_1100, - b_0010, b_1010, b_0110, b_1110, - b_0001, b_1001, b_0101, b_1101, - b_0011, b_1011, b_0111, b_1111 -}; +static inline unsigned char invert_revert(unsigned char ch) +{ + return bitrev8(~ch); +} static void str_invert_revert(unsigned char *b, int len) { int i; for (i = 0; i < len; i++) - b[i] = (irtab[b[i] & 0x0f] << 4) | irtab[b[i] >> 4]; -} - -static unsigned char invert_revert(unsigned char ch) -{ - return (irtab[ch & 0x0f] << 4) | irtab[ch >> 4]; + b[i] = invert_revert(b[i]); } #define ATRLENCK(dev,pos) \ @@ -1114,7 +1091,7 @@ static ssize_t cmm_write(struct file *filp, const char __user *buf, /* * wait for atr to become valid. * note: it is important to lock this code. if we dont, the monitor - * could be run between test_bit and the the call the sleep on the + * could be run between test_bit and the call to sleep on the * atr-queue. if *then* the monitor detects atr valid, it will wake up * any process on the atr-queue, *but* since we have been interrupted, * we do not yet sleep on this queue. this would result in a missed @@ -1881,8 +1858,11 @@ static int cm4000_probe(struct pcmcia_device *link) init_waitqueue_head(&dev->readq); ret = cm4000_config(link, i); - if (ret) + if (ret) { + dev_table[i] = NULL; + kfree(dev); return ret; + } class_device_create(cmm_class, NULL, MKDEV(major, i), NULL, "cmm%d", i); @@ -1907,7 +1887,7 @@ static void cm4000_detach(struct pcmcia_device *link) cm4000_release(link); dev_table[devno] = NULL; - kfree(dev); + kfree(dev); class_device_destroy(cmm_class, MKDEV(major, devno)); @@ -1956,12 +1936,14 @@ static int __init cmm_init(void) if (major < 0) { printk(KERN_WARNING MODULE_NAME ": could not get major number\n"); + class_destroy(cmm_class); return major; } rc = pcmcia_register_driver(&cm4000_driver); if (rc < 0) { unregister_chrdev(major, DEVICE_NAME); + class_destroy(cmm_class); return rc; } diff --git a/drivers/char/pcmcia/cm4040_cs.c b/drivers/char/pcmcia/cm4040_cs.c index f2e4ec4fd407..af88181a17f4 100644 --- a/drivers/char/pcmcia/cm4040_cs.c +++ b/drivers/char/pcmcia/cm4040_cs.c @@ -636,8 +636,11 @@ static int reader_probe(struct pcmcia_device *link) setup_timer(&dev->poll_timer, cm4040_do_poll, 0); ret = reader_config(link, i); - if (ret) + if (ret) { + dev_table[i] = NULL; + kfree(dev); return ret; + } class_device_create(cmx_class, NULL, MKDEV(major, i), NULL, "cmx%d", i); @@ -708,12 +711,14 @@ static int __init cm4040_init(void) if (major < 0) { printk(KERN_WARNING MODULE_NAME ": could not get major number\n"); + class_destroy(cmx_class); return major; } rc = pcmcia_register_driver(&reader_driver); if (rc < 0) { unregister_chrdev(major, DEVICE_NAME); + class_destroy(cmx_class); return rc; } diff --git a/drivers/char/tpm/Kconfig b/drivers/char/tpm/Kconfig index fe00c7dfb649..11089be0691b 100644 --- a/drivers/char/tpm/Kconfig +++ b/drivers/char/tpm/Kconfig @@ -33,7 +33,7 @@ config TCG_NSC tristate "National Semiconductor TPM Interface" depends on TCG_TPM && PNPACPI ---help--- - If you have a TPM security chip from National Semicondutor + If you have a TPM security chip from National Semiconductor say Yes and it will be accessible from within Linux. To compile this driver as a module, choose M here; the module will be called tpm_nsc. diff --git a/drivers/char/tty_io.c b/drivers/char/tty_io.c index 7710a6a77d97..fc662e4ce58a 100644 --- a/drivers/char/tty_io.c +++ b/drivers/char/tty_io.c @@ -934,13 +934,6 @@ restart: return -EINVAL; /* - * No more input please, we are switching. The new ldisc - * will update this value in the ldisc open function - */ - - tty->receive_room = 0; - - /* * Problem: What do we do if this blocks ? */ @@ -951,6 +944,13 @@ restart: return 0; } + /* + * No more input please, we are switching. The new ldisc + * will update this value in the ldisc open function + */ + + tty->receive_room = 0; + o_ldisc = tty->ldisc; o_tty = tty->link; @@ -1573,11 +1573,11 @@ void no_tty(void) /** - * stop_tty - propogate flow control + * stop_tty - propagate flow control * @tty: tty to stop * * Perform flow control to the driver. For PTY/TTY pairs we - * must also propogate the TIOCKPKT status. May be called + * must also propagate the TIOCKPKT status. May be called * on an already stopped device and will not re-call the driver * method. * @@ -1607,11 +1607,11 @@ void stop_tty(struct tty_struct *tty) EXPORT_SYMBOL(stop_tty); /** - * start_tty - propogate flow control + * start_tty - propagate flow control * @tty: tty to start * * Start a tty that has been stopped if at all possible. Perform - * any neccessary wakeups and propogate the TIOCPKT status. If this + * any neccessary wakeups and propagate the TIOCPKT status. If this * is the tty was previous stopped and is being started then the * driver start method is invoked and the line discipline woken. * diff --git a/drivers/cpufreq/cpufreq.c b/drivers/cpufreq/cpufreq.c index 893dbaf386fb..eb37fba9b7ef 100644 --- a/drivers/cpufreq/cpufreq.c +++ b/drivers/cpufreq/cpufreq.c @@ -1685,9 +1685,11 @@ static int cpufreq_cpu_callback(struct notifier_block *nfb, if (sys_dev) { switch (action) { case CPU_ONLINE: + case CPU_ONLINE_FROZEN: cpufreq_add_dev(sys_dev); break; case CPU_DOWN_PREPARE: + case CPU_DOWN_PREPARE_FROZEN: if (unlikely(lock_policy_rwsem_write(cpu))) BUG(); @@ -1699,6 +1701,7 @@ static int cpufreq_cpu_callback(struct notifier_block *nfb, __cpufreq_remove_dev(sys_dev); break; case CPU_DOWN_FAILED: + case CPU_DOWN_FAILED_FROZEN: cpufreq_add_dev(sys_dev); break; } diff --git a/drivers/cpufreq/cpufreq_stats.c b/drivers/cpufreq/cpufreq_stats.c index d1c7cac9316c..d2f0cbd8b8f3 100644 --- a/drivers/cpufreq/cpufreq_stats.c +++ b/drivers/cpufreq/cpufreq_stats.c @@ -313,9 +313,11 @@ static int cpufreq_stat_cpu_callback(struct notifier_block *nfb, switch (action) { case CPU_ONLINE: + case CPU_ONLINE_FROZEN: cpufreq_update_policy(cpu); break; case CPU_DEAD: + case CPU_DEAD_FROZEN: cpufreq_stats_free_table(cpu); break; } diff --git a/drivers/crypto/Kconfig b/drivers/crypto/Kconfig index f21fe66c9eef..f4c634504d1a 100644 --- a/drivers/crypto/Kconfig +++ b/drivers/crypto/Kconfig @@ -51,7 +51,7 @@ config CRYPTO_DEV_GEODE default m help Say 'Y' here to use the AMD Geode LX processor on-board AES - engine for the CryptoAPI AES alogrithm. + engine for the CryptoAPI AES algorithm. To compile this driver as a module, choose M here: the module will be called geode-aes. diff --git a/drivers/hwmon/coretemp.c b/drivers/hwmon/coretemp.c index 03b1f650d1c4..75e3911810a3 100644 --- a/drivers/hwmon/coretemp.c +++ b/drivers/hwmon/coretemp.c @@ -309,9 +309,11 @@ static int coretemp_cpu_callback(struct notifier_block *nfb, switch (action) { case CPU_ONLINE: + case CPU_ONLINE_FROZEN: coretemp_device_add(cpu); break; case CPU_DEAD: + case CPU_DEAD_FROZEN: coretemp_device_remove(cpu); break; } diff --git a/drivers/i2c/chips/tps65010.c b/drivers/i2c/chips/tps65010.c index 7ed92dc3d833..3c3f2ebf3fc9 100644 --- a/drivers/i2c/chips/tps65010.c +++ b/drivers/i2c/chips/tps65010.c @@ -354,7 +354,7 @@ static void tps65010_interrupt(struct tps65010 *tps) * also needs to get error handling and probably * an #ifdef CONFIG_SOFTWARE_SUSPEND */ - pm_suspend(PM_SUSPEND_DISK); + hibernate(); #endif poll = 1; } diff --git a/drivers/ide/pci/siimage.c b/drivers/ide/pci/siimage.c index c0188de3cc66..79cec50a242f 100644 --- a/drivers/ide/pci/siimage.c +++ b/drivers/ide/pci/siimage.c @@ -831,7 +831,7 @@ static void __devinit init_mmio_iops_siimage(ide_hwif_t *hwif) /* * Now set up the hw. We have to do this ourselves as - * the MMIO layout isnt the same as the the standard port + * the MMIO layout isnt the same as the standard port * based I/O */ diff --git a/drivers/ieee1394/nodemgr.c b/drivers/ieee1394/nodemgr.c index 6a1a0572275e..835937e38529 100644 --- a/drivers/ieee1394/nodemgr.c +++ b/drivers/ieee1394/nodemgr.c @@ -1702,7 +1702,7 @@ static int nodemgr_host_thread(void *__hi) generation = get_hpsb_generation(host); /* If we get a reset before we are done waiting, then - * start the the waiting over again */ + * start the waiting over again */ if (generation != g) g = generation, i = 0; } diff --git a/drivers/infiniband/hw/ehca/ehca_irq.c b/drivers/infiniband/hw/ehca/ehca_irq.c index f284be1c9166..82dda2faf4d0 100644 --- a/drivers/infiniband/hw/ehca/ehca_irq.c +++ b/drivers/infiniband/hw/ehca/ehca_irq.c @@ -745,6 +745,7 @@ static int comp_pool_callback(struct notifier_block *nfb, switch (action) { case CPU_UP_PREPARE: + case CPU_UP_PREPARE_FROZEN: ehca_gen_dbg("CPU: %x (CPU_PREPARE)", cpu); if(!create_comp_task(pool, cpu)) { ehca_gen_err("Can't create comp_task for cpu: %x", cpu); @@ -752,24 +753,29 @@ static int comp_pool_callback(struct notifier_block *nfb, } break; case CPU_UP_CANCELED: + case CPU_UP_CANCELED_FROZEN: ehca_gen_dbg("CPU: %x (CPU_CANCELED)", cpu); cct = per_cpu_ptr(pool->cpu_comp_tasks, cpu); kthread_bind(cct->task, any_online_cpu(cpu_online_map)); destroy_comp_task(pool, cpu); break; case CPU_ONLINE: + case CPU_ONLINE_FROZEN: ehca_gen_dbg("CPU: %x (CPU_ONLINE)", cpu); cct = per_cpu_ptr(pool->cpu_comp_tasks, cpu); kthread_bind(cct->task, cpu); wake_up_process(cct->task); break; case CPU_DOWN_PREPARE: + case CPU_DOWN_PREPARE_FROZEN: ehca_gen_dbg("CPU: %x (CPU_DOWN_PREPARE)", cpu); break; case CPU_DOWN_FAILED: + case CPU_DOWN_FAILED_FROZEN: ehca_gen_dbg("CPU: %x (CPU_DOWN_FAILED)", cpu); break; case CPU_DEAD: + case CPU_DEAD_FROZEN: ehca_gen_dbg("CPU: %x (CPU_DEAD)", cpu); destroy_comp_task(pool, cpu); take_over_work(pool, cpu); diff --git a/drivers/isdn/capi/Kconfig b/drivers/isdn/capi/Kconfig index c921d6c522f5..c92f9d764fce 100644 --- a/drivers/isdn/capi/Kconfig +++ b/drivers/isdn/capi/Kconfig @@ -17,7 +17,7 @@ config CAPI_TRACE help If you say Y here, the kernelcapi driver can make verbose traces of CAPI messages. This feature can be enabled/disabled via IOCTL for - every controler (default disabled). + every controller (default disabled). This will increase the size of the kernelcapi module by 20 KB. If unsure, say Y. diff --git a/drivers/isdn/hardware/eicon/divasync.h b/drivers/isdn/hardware/eicon/divasync.h index af3eb9e795b5..85784a7ffb25 100644 --- a/drivers/isdn/hardware/eicon/divasync.h +++ b/drivers/isdn/hardware/eicon/divasync.h @@ -216,7 +216,7 @@ typedef struct #define SERIAL_HOOK_RING 0x85 #define SERIAL_HOOK_DETACH 0x8f unsigned char Flags; /* function refinements */ - /* parameters passed by the the ATTACH request */ + /* parameters passed by the ATTACH request */ SERIAL_INT_CB InterruptHandler; /* called on each interrupt */ SERIAL_DPC_CB DeferredHandler; /* called on hook state changes */ void *HandlerContext; /* context for both handlers */ diff --git a/drivers/isdn/hisax/hfc_usb.c b/drivers/isdn/hisax/hfc_usb.c index 99e70d4103b6..1f18f1993387 100644 --- a/drivers/isdn/hisax/hfc_usb.c +++ b/drivers/isdn/hisax/hfc_usb.c @@ -1217,11 +1217,11 @@ usb_init(hfcusb_data * hfc) /* aux = output, reset off */ write_usb(hfc, HFCUSB_CIRM, 0x10); - /* set USB_SIZE to match the the wMaxPacketSize for INT or BULK transfers */ + /* set USB_SIZE to match the wMaxPacketSize for INT or BULK transfers */ write_usb(hfc, HFCUSB_USB_SIZE, (hfc->packet_size / 8) | ((hfc->packet_size / 8) << 4)); - /* set USB_SIZE_I to match the the wMaxPacketSize for ISO transfers */ + /* set USB_SIZE_I to match the wMaxPacketSize for ISO transfers */ write_usb(hfc, HFCUSB_USB_SIZE_I, hfc->iso_packet_size); /* enable PCM/GCI master mode */ diff --git a/drivers/kvm/kvm_main.c b/drivers/kvm/kvm_main.c index c8b8cfa332bb..0d892600ff00 100644 --- a/drivers/kvm/kvm_main.c +++ b/drivers/kvm/kvm_main.c @@ -2889,7 +2889,9 @@ static int kvm_cpu_hotplug(struct notifier_block *notifier, unsigned long val, switch (val) { case CPU_DOWN_PREPARE: + case CPU_DOWN_PREPARE_FROZEN: case CPU_UP_CANCELED: + case CPU_UP_CANCELED_FROZEN: printk(KERN_INFO "kvm: disabling virtualization on CPU%d\n", cpu); decache_vcpus_on_cpu(cpu); @@ -2897,6 +2899,7 @@ static int kvm_cpu_hotplug(struct notifier_block *notifier, unsigned long val, NULL, 0, 1); break; case CPU_ONLINE: + case CPU_ONLINE_FROZEN: printk(KERN_INFO "kvm: enabling virtualization on CPU%d\n", cpu); smp_call_function_single(cpu, kvm_arch_ops->hardware_enable, diff --git a/drivers/leds/leds-h1940.c b/drivers/leds/leds-h1940.c index 1d49d2ade557..677c99325be5 100644 --- a/drivers/leds/leds-h1940.c +++ b/drivers/leds/leds-h1940.c @@ -1,5 +1,5 @@ /* - * drivers/leds/h1940-leds.c + * drivers/leds/leds-h1940.c * Copyright (c) Arnaud Patard <arnaud.patard@rtp-net.org> * * This file is subject to the terms and conditions of the GNU General Public diff --git a/drivers/macintosh/Kconfig b/drivers/macintosh/Kconfig index a32c91e27b3c..58926da0ae18 100644 --- a/drivers/macintosh/Kconfig +++ b/drivers/macintosh/Kconfig @@ -237,7 +237,7 @@ config PMAC_RACKMETER tristate "Support for Apple XServe front panel LEDs" depends on PPC_PMAC help - This driver procides some support to control the front panel + This driver provides some support to control the front panel blue LEDs "vu-meter" of the XServer macs. endif # MACINTOSH_DRIVERS diff --git a/drivers/mca/mca-bus.c b/drivers/mca/mca-bus.c index da862e4632dd..67b8e9453b19 100644 --- a/drivers/mca/mca-bus.c +++ b/drivers/mca/mca-bus.c @@ -47,19 +47,25 @@ static int mca_bus_match (struct device *dev, struct device_driver *drv) { struct mca_device *mca_dev = to_mca_device (dev); struct mca_driver *mca_drv = to_mca_driver (drv); - const short *mca_ids = mca_drv->id_table; - int i; - - if (!mca_ids) - return 0; - - for(i = 0; mca_ids[i]; i++) { - if (mca_ids[i] == mca_dev->pos_id) { - mca_dev->index = i; - return 1; + const unsigned short *mca_ids = mca_drv->id_table; + int i = 0; + + if (mca_ids) { + for(i = 0; mca_ids[i]; i++) { + if (mca_ids[i] == mca_dev->pos_id) { + mca_dev->index = i; + return 1; + } } } - + /* If the integrated id is present, treat it as though it were an + * additional id in the id_table (it can't be because by definition, + * integrated id's overflow a short */ + if (mca_drv->integrated_id && mca_dev->pos_id == + mca_drv->integrated_id) { + mca_dev->index = i; + return 1; + } return 0; } diff --git a/drivers/mca/mca-driver.c b/drivers/mca/mca-driver.c index 2223466b3d8a..32cd39bcc715 100644 --- a/drivers/mca/mca-driver.c +++ b/drivers/mca/mca-driver.c @@ -36,12 +36,25 @@ int mca_register_driver(struct mca_driver *mca_drv) mca_drv->driver.bus = &mca_bus_type; if ((r = driver_register(&mca_drv->driver)) < 0) return r; + mca_drv->integrated_id = 0; } return 0; } EXPORT_SYMBOL(mca_register_driver); +int mca_register_driver_integrated(struct mca_driver *mca_driver, + int integrated_id) +{ + int r = mca_register_driver(mca_driver); + + if (!r) + mca_driver->integrated_id = integrated_id; + + return r; +} +EXPORT_SYMBOL(mca_register_driver_integrated); + void mca_unregister_driver(struct mca_driver *mca_drv) { if (MCA_bus) diff --git a/drivers/md/Kconfig b/drivers/md/Kconfig index 4540ade6b6b5..7df934d69134 100644 --- a/drivers/md/Kconfig +++ b/drivers/md/Kconfig @@ -262,6 +262,15 @@ config DM_MULTIPATH_EMC ---help--- Multipath support for EMC CX/AX series hardware. +config DM_DELAY + tristate "I/O delaying target (EXPERIMENTAL)" + depends on BLK_DEV_DM && EXPERIMENTAL + ---help--- + A target that delays reads and/or writes and can send + them to different devices. Useful for testing. + + If unsure, say N. + endmenu endif diff --git a/drivers/md/Makefile b/drivers/md/Makefile index 34957a68d921..38754084eac7 100644 --- a/drivers/md/Makefile +++ b/drivers/md/Makefile @@ -31,6 +31,7 @@ obj-$(CONFIG_MD_FAULTY) += faulty.o obj-$(CONFIG_BLK_DEV_MD) += md-mod.o obj-$(CONFIG_BLK_DEV_DM) += dm-mod.o obj-$(CONFIG_DM_CRYPT) += dm-crypt.o +obj-$(CONFIG_DM_DELAY) += dm-delay.o obj-$(CONFIG_DM_MULTIPATH) += dm-multipath.o dm-round-robin.o obj-$(CONFIG_DM_MULTIPATH_EMC) += dm-emc.o obj-$(CONFIG_DM_SNAPSHOT) += dm-snapshot.o diff --git a/drivers/md/dm-bio-list.h b/drivers/md/dm-bio-list.h index da4349649f7f..c6be88826fae 100644 --- a/drivers/md/dm-bio-list.h +++ b/drivers/md/dm-bio-list.h @@ -8,17 +8,43 @@ #define DM_BIO_LIST_H #include <linux/bio.h> +#include <linux/prefetch.h> struct bio_list { struct bio *head; struct bio *tail; }; +static inline int bio_list_empty(const struct bio_list *bl) +{ + return bl->head == NULL; +} + +#define BIO_LIST_INIT { .head = NULL, .tail = NULL } + +#define BIO_LIST(bl) \ + struct bio_list bl = BIO_LIST_INIT + static inline void bio_list_init(struct bio_list *bl) { bl->head = bl->tail = NULL; } +#define bio_list_for_each(bio, bl) \ + for (bio = (bl)->head; bio && ({ prefetch(bio->bi_next); 1; }); \ + bio = bio->bi_next) + +static inline unsigned bio_list_size(const struct bio_list *bl) +{ + unsigned sz = 0; + struct bio *bio; + + bio_list_for_each(bio, bl) + sz++; + + return sz; +} + static inline void bio_list_add(struct bio_list *bl, struct bio *bio) { bio->bi_next = NULL; diff --git a/drivers/md/dm-crypt.c b/drivers/md/dm-crypt.c index d8121234c347..7b0fcfc9eaa5 100644 --- a/drivers/md/dm-crypt.c +++ b/drivers/md/dm-crypt.c @@ -33,7 +33,6 @@ struct crypt_io { struct dm_target *target; struct bio *base_bio; - struct bio *first_clone; struct work_struct work; atomic_t pending; int error; @@ -107,6 +106,8 @@ struct crypt_config { static struct kmem_cache *_crypt_io_pool; +static void clone_init(struct crypt_io *, struct bio *); + /* * Different IV generation algorithms: * @@ -120,6 +121,9 @@ static struct kmem_cache *_crypt_io_pool; * benbi: the 64-bit "big-endian 'narrow block'-count", starting at 1 * (needed for LRW-32-AES and possible other narrow block modes) * + * null: the initial vector is always zero. Provides compatibility with + * obsolete loop_fish2 devices. Do not use for new devices. + * * plumb: unimplemented, see: * http://article.gmane.org/gmane.linux.kernel.device-mapper.dm-crypt/454 */ @@ -256,6 +260,13 @@ static int crypt_iv_benbi_gen(struct crypt_config *cc, u8 *iv, sector_t sector) return 0; } +static int crypt_iv_null_gen(struct crypt_config *cc, u8 *iv, sector_t sector) +{ + memset(iv, 0, cc->iv_size); + + return 0; +} + static struct crypt_iv_operations crypt_iv_plain_ops = { .generator = crypt_iv_plain_gen }; @@ -272,6 +283,10 @@ static struct crypt_iv_operations crypt_iv_benbi_ops = { .generator = crypt_iv_benbi_gen }; +static struct crypt_iv_operations crypt_iv_null_ops = { + .generator = crypt_iv_null_gen +}; + static int crypt_convert_scatterlist(struct crypt_config *cc, struct scatterlist *out, struct scatterlist *in, unsigned int length, @@ -378,36 +393,21 @@ static int crypt_convert(struct crypt_config *cc, * This should never violate the device limitations * May return a smaller bio when running out of pages */ -static struct bio * -crypt_alloc_buffer(struct crypt_config *cc, unsigned int size, - struct bio *base_bio, unsigned int *bio_vec_idx) +static struct bio *crypt_alloc_buffer(struct crypt_io *io, unsigned int size) { + struct crypt_config *cc = io->target->private; struct bio *clone; unsigned int nr_iovecs = (size + PAGE_SIZE - 1) >> PAGE_SHIFT; gfp_t gfp_mask = GFP_NOIO | __GFP_HIGHMEM; unsigned int i; - if (base_bio) { - clone = bio_alloc_bioset(GFP_NOIO, base_bio->bi_max_vecs, cc->bs); - __bio_clone(clone, base_bio); - } else - clone = bio_alloc_bioset(GFP_NOIO, nr_iovecs, cc->bs); - + clone = bio_alloc_bioset(GFP_NOIO, nr_iovecs, cc->bs); if (!clone) return NULL; - clone->bi_destructor = dm_crypt_bio_destructor; - - /* if the last bio was not complete, continue where that one ended */ - clone->bi_idx = *bio_vec_idx; - clone->bi_vcnt = *bio_vec_idx; - clone->bi_size = 0; - clone->bi_flags &= ~(1 << BIO_SEG_VALID); - - /* clone->bi_idx pages have already been allocated */ - size -= clone->bi_idx * PAGE_SIZE; + clone_init(io, clone); - for (i = clone->bi_idx; i < nr_iovecs; i++) { + for (i = 0; i < nr_iovecs; i++) { struct bio_vec *bv = bio_iovec_idx(clone, i); bv->bv_page = mempool_alloc(cc->page_pool, gfp_mask); @@ -419,7 +419,7 @@ crypt_alloc_buffer(struct crypt_config *cc, unsigned int size, * return a partially allocated bio, the caller will then try * to allocate additional bios while submitting this partial bio */ - if ((i - clone->bi_idx) == (MIN_BIO_PAGES - 1)) + if (i == (MIN_BIO_PAGES - 1)) gfp_mask = (gfp_mask | __GFP_NOWARN) & ~__GFP_WAIT; bv->bv_offset = 0; @@ -438,12 +438,6 @@ crypt_alloc_buffer(struct crypt_config *cc, unsigned int size, return NULL; } - /* - * Remember the last bio_vec allocated to be able - * to correctly continue after the splitting. - */ - *bio_vec_idx = clone->bi_vcnt; - return clone; } @@ -495,9 +489,6 @@ static void dec_pending(struct crypt_io *io, int error) if (!atomic_dec_and_test(&io->pending)) return; - if (io->first_clone) - bio_put(io->first_clone); - bio_endio(io->base_bio, io->base_bio->bi_size, io->error); mempool_free(io, cc->io_pool); @@ -562,6 +553,7 @@ static void clone_init(struct crypt_io *io, struct bio *clone) clone->bi_end_io = crypt_endio; clone->bi_bdev = cc->dev->bdev; clone->bi_rw = io->base_bio->bi_rw; + clone->bi_destructor = dm_crypt_bio_destructor; } static void process_read(struct crypt_io *io) @@ -585,7 +577,6 @@ static void process_read(struct crypt_io *io) } clone_init(io, clone); - clone->bi_destructor = dm_crypt_bio_destructor; clone->bi_idx = 0; clone->bi_vcnt = bio_segments(base_bio); clone->bi_size = base_bio->bi_size; @@ -604,7 +595,6 @@ static void process_write(struct crypt_io *io) struct convert_context ctx; unsigned remaining = base_bio->bi_size; sector_t sector = base_bio->bi_sector - io->target->begin; - unsigned bvec_idx = 0; atomic_inc(&io->pending); @@ -615,14 +605,14 @@ static void process_write(struct crypt_io *io) * so repeat the whole process until all the data can be handled. */ while (remaining) { - clone = crypt_alloc_buffer(cc, base_bio->bi_size, - io->first_clone, &bvec_idx); + clone = crypt_alloc_buffer(io, remaining); if (unlikely(!clone)) { dec_pending(io, -ENOMEM); return; } ctx.bio_out = clone; + ctx.idx_out = 0; if (unlikely(crypt_convert(cc, &ctx) < 0)) { crypt_free_buffer_pages(cc, clone, clone->bi_size); @@ -631,31 +621,26 @@ static void process_write(struct crypt_io *io) return; } - clone_init(io, clone); - clone->bi_sector = cc->start + sector; - - if (!io->first_clone) { - /* - * hold a reference to the first clone, because it - * holds the bio_vec array and that can't be freed - * before all other clones are released - */ - bio_get(clone); - io->first_clone = clone; - } + /* crypt_convert should have filled the clone bio */ + BUG_ON(ctx.idx_out < clone->bi_vcnt); + clone->bi_sector = cc->start + sector; remaining -= clone->bi_size; sector += bio_sectors(clone); - /* prevent bio_put of first_clone */ + /* Grab another reference to the io struct + * before we kick off the request */ if (remaining) atomic_inc(&io->pending); generic_make_request(clone); + /* Do not reference clone after this - it + * may be gone already. */ + /* out of memory -> run queues */ if (remaining) - congestion_wait(bio_data_dir(clone), HZ/100); + congestion_wait(WRITE, HZ/100); } } @@ -832,6 +817,8 @@ static int crypt_ctr(struct dm_target *ti, unsigned int argc, char **argv) cc->iv_gen_ops = &crypt_iv_essiv_ops; else if (strcmp(ivmode, "benbi") == 0) cc->iv_gen_ops = &crypt_iv_benbi_ops; + else if (strcmp(ivmode, "null") == 0) + cc->iv_gen_ops = &crypt_iv_null_ops; else { ti->error = "Invalid IV mode"; goto bad2; @@ -954,10 +941,12 @@ static int crypt_map(struct dm_target *ti, struct bio *bio, struct crypt_config *cc = ti->private; struct crypt_io *io; + if (bio_barrier(bio)) + return -EOPNOTSUPP; + io = mempool_alloc(cc->io_pool, GFP_NOIO); io->target = ti; io->base_bio = bio; - io->first_clone = NULL; io->error = io->post_process = 0; atomic_set(&io->pending, 0); kcryptd_queue_io(io); @@ -1057,7 +1046,7 @@ error: static struct target_type crypt_target = { .name = "crypt", - .version= {1, 3, 0}, + .version= {1, 5, 0}, .module = THIS_MODULE, .ctr = crypt_ctr, .dtr = crypt_dtr, diff --git a/drivers/md/dm-delay.c b/drivers/md/dm-delay.c new file mode 100644 index 000000000000..52c7cf9e5803 --- /dev/null +++ b/drivers/md/dm-delay.c @@ -0,0 +1,383 @@ +/* + * Copyright (C) 2005-2007 Red Hat GmbH + * + * A target that delays reads and/or writes and can send + * them to different devices. + * + * This file is released under the GPL. + */ + +#include <linux/module.h> +#include <linux/init.h> +#include <linux/blkdev.h> +#include <linux/bio.h> +#include <linux/slab.h> + +#include "dm.h" +#include "dm-bio-list.h" + +#define DM_MSG_PREFIX "delay" + +struct delay_c { + struct timer_list delay_timer; + struct semaphore timer_lock; + struct work_struct flush_expired_bios; + struct list_head delayed_bios; + atomic_t may_delay; + mempool_t *delayed_pool; + + struct dm_dev *dev_read; + sector_t start_read; + unsigned read_delay; + unsigned reads; + + struct dm_dev *dev_write; + sector_t start_write; + unsigned write_delay; + unsigned writes; +}; + +struct delay_info { + struct delay_c *context; + struct list_head list; + struct bio *bio; + unsigned long expires; +}; + +static DEFINE_MUTEX(delayed_bios_lock); + +static struct workqueue_struct *kdelayd_wq; +static struct kmem_cache *delayed_cache; + +static void handle_delayed_timer(unsigned long data) +{ + struct delay_c *dc = (struct delay_c *)data; + + queue_work(kdelayd_wq, &dc->flush_expired_bios); +} + +static void queue_timeout(struct delay_c *dc, unsigned long expires) +{ + down(&dc->timer_lock); + + if (!timer_pending(&dc->delay_timer) || expires < dc->delay_timer.expires) + mod_timer(&dc->delay_timer, expires); + + up(&dc->timer_lock); +} + +static void flush_bios(struct bio *bio) +{ + struct bio *n; + + while (bio) { + n = bio->bi_next; + bio->bi_next = NULL; + generic_make_request(bio); + bio = n; + } +} + +static struct bio *flush_delayed_bios(struct delay_c *dc, int flush_all) +{ + struct delay_info *delayed, *next; + unsigned long next_expires = 0; + int start_timer = 0; + BIO_LIST(flush_bios); + + mutex_lock(&delayed_bios_lock); + list_for_each_entry_safe(delayed, next, &dc->delayed_bios, list) { + if (flush_all || time_after_eq(jiffies, delayed->expires)) { + list_del(&delayed->list); + bio_list_add(&flush_bios, delayed->bio); + if ((bio_data_dir(delayed->bio) == WRITE)) + delayed->context->writes--; + else + delayed->context->reads--; + mempool_free(delayed, dc->delayed_pool); + continue; + } + + if (!start_timer) { + start_timer = 1; + next_expires = delayed->expires; + } else + next_expires = min(next_expires, delayed->expires); + } + + mutex_unlock(&delayed_bios_lock); + + if (start_timer) + queue_timeout(dc, next_expires); + + return bio_list_get(&flush_bios); +} + +static void flush_expired_bios(struct work_struct *work) +{ + struct delay_c *dc; + + dc = container_of(work, struct delay_c, flush_expired_bios); + flush_bios(flush_delayed_bios(dc, 0)); +} + +/* + * Mapping parameters: + * <device> <offset> <delay> [<write_device> <write_offset> <write_delay>] + * + * With separate write parameters, the first set is only used for reads. + * Delays are specified in milliseconds. + */ +static int delay_ctr(struct dm_target *ti, unsigned int argc, char **argv) +{ + struct delay_c *dc; + unsigned long long tmpll; + + if (argc != 3 && argc != 6) { + ti->error = "requires exactly 3 or 6 arguments"; + return -EINVAL; + } + + dc = kmalloc(sizeof(*dc), GFP_KERNEL); + if (!dc) { + ti->error = "Cannot allocate context"; + return -ENOMEM; + } + + dc->reads = dc->writes = 0; + + if (sscanf(argv[1], "%llu", &tmpll) != 1) { + ti->error = "Invalid device sector"; + goto bad; + } + dc->start_read = tmpll; + + if (sscanf(argv[2], "%u", &dc->read_delay) != 1) { + ti->error = "Invalid delay"; + goto bad; + } + + if (dm_get_device(ti, argv[0], dc->start_read, ti->len, + dm_table_get_mode(ti->table), &dc->dev_read)) { + ti->error = "Device lookup failed"; + goto bad; + } + + if (argc == 3) { + dc->dev_write = NULL; + goto out; + } + + if (sscanf(argv[4], "%llu", &tmpll) != 1) { + ti->error = "Invalid write device sector"; + goto bad; + } + dc->start_write = tmpll; + + if (sscanf(argv[5], "%u", &dc->write_delay) != 1) { + ti->error = "Invalid write delay"; + goto bad; + } + + if (dm_get_device(ti, argv[3], dc->start_write, ti->len, + dm_table_get_mode(ti->table), &dc->dev_write)) { + ti->error = "Write device lookup failed"; + dm_put_device(ti, dc->dev_read); + goto bad; + } + +out: + dc->delayed_pool = mempool_create_slab_pool(128, delayed_cache); + if (!dc->delayed_pool) { + DMERR("Couldn't create delayed bio pool."); + goto bad; + } + + init_timer(&dc->delay_timer); + dc->delay_timer.function = handle_delayed_timer; + dc->delay_timer.data = (unsigned long)dc; + + INIT_WORK(&dc->flush_expired_bios, flush_expired_bios); + INIT_LIST_HEAD(&dc->delayed_bios); + init_MUTEX(&dc->timer_lock); + atomic_set(&dc->may_delay, 1); + + ti->private = dc; + return 0; + +bad: + kfree(dc); + return -EINVAL; +} + +static void delay_dtr(struct dm_target *ti) +{ + struct delay_c *dc = ti->private; + + flush_workqueue(kdelayd_wq); + + dm_put_device(ti, dc->dev_read); + + if (dc->dev_write) + dm_put_device(ti, dc->dev_write); + + mempool_destroy(dc->delayed_pool); + kfree(dc); +} + +static int delay_bio(struct delay_c *dc, int delay, struct bio *bio) +{ + struct delay_info *delayed; + unsigned long expires = 0; + + if (!delay || !atomic_read(&dc->may_delay)) + return 1; + + delayed = mempool_alloc(dc->delayed_pool, GFP_NOIO); + + delayed->context = dc; + delayed->bio = bio; + delayed->expires = expires = jiffies + (delay * HZ / 1000); + + mutex_lock(&delayed_bios_lock); + + if (bio_data_dir(bio) == WRITE) + dc->writes++; + else + dc->reads++; + + list_add_tail(&delayed->list, &dc->delayed_bios); + + mutex_unlock(&delayed_bios_lock); + + queue_timeout(dc, expires); + + return 0; +} + +static void delay_presuspend(struct dm_target *ti) +{ + struct delay_c *dc = ti->private; + + atomic_set(&dc->may_delay, 0); + del_timer_sync(&dc->delay_timer); + flush_bios(flush_delayed_bios(dc, 1)); +} + +static void delay_resume(struct dm_target *ti) +{ + struct delay_c *dc = ti->private; + + atomic_set(&dc->may_delay, 1); +} + +static int delay_map(struct dm_target *ti, struct bio *bio, + union map_info *map_context) +{ + struct delay_c *dc = ti->private; + + if ((bio_data_dir(bio) == WRITE) && (dc->dev_write)) { + bio->bi_bdev = dc->dev_write->bdev; + bio->bi_sector = dc->start_write + + (bio->bi_sector - ti->begin); + + return delay_bio(dc, dc->write_delay, bio); + } + + bio->bi_bdev = dc->dev_read->bdev; + bio->bi_sector = dc->start_read + + (bio->bi_sector - ti->begin); + + return delay_bio(dc, dc->read_delay, bio); +} + +static int delay_status(struct dm_target *ti, status_type_t type, + char *result, unsigned maxlen) +{ + struct delay_c *dc = ti->private; + int sz = 0; + + switch (type) { + case STATUSTYPE_INFO: + DMEMIT("%u %u", dc->reads, dc->writes); + break; + + case STATUSTYPE_TABLE: + DMEMIT("%s %llu %u", dc->dev_read->name, + (unsigned long long) dc->start_read, + dc->read_delay); + if (dc->dev_write) + DMEMIT("%s %llu %u", dc->dev_write->name, + (unsigned long long) dc->start_write, + dc->write_delay); + break; + } + + return 0; +} + +static struct target_type delay_target = { + .name = "delay", + .version = {1, 0, 2}, + .module = THIS_MODULE, + .ctr = delay_ctr, + .dtr = delay_dtr, + .map = delay_map, + .presuspend = delay_presuspend, + .resume = delay_resume, + .status = delay_status, +}; + +static int __init dm_delay_init(void) +{ + int r = -ENOMEM; + + kdelayd_wq = create_workqueue("kdelayd"); + if (!kdelayd_wq) { + DMERR("Couldn't start kdelayd"); + goto bad_queue; + } + + delayed_cache = kmem_cache_create("dm-delay", + sizeof(struct delay_info), + __alignof__(struct delay_info), + 0, NULL, NULL); + if (!delayed_cache) { + DMERR("Couldn't create delayed bio cache."); + goto bad_memcache; + } + + r = dm_register_target(&delay_target); + if (r < 0) { + DMERR("register failed %d", r); + goto bad_register; + } + + return 0; + +bad_register: + kmem_cache_destroy(delayed_cache); +bad_memcache: + destroy_workqueue(kdelayd_wq); +bad_queue: + return r; +} + +static void __exit dm_delay_exit(void) +{ + int r = dm_unregister_target(&delay_target); + + if (r < 0) + DMERR("unregister failed %d", r); + + kmem_cache_destroy(delayed_cache); + destroy_workqueue(kdelayd_wq); +} + +/* Module hooks */ +module_init(dm_delay_init); +module_exit(dm_delay_exit); + +MODULE_DESCRIPTION(DM_NAME " delay target"); +MODULE_AUTHOR("Heinz Mauelshagen <mauelshagen@redhat.com>"); +MODULE_LICENSE("GPL"); diff --git a/drivers/md/dm-exception-store.c b/drivers/md/dm-exception-store.c index 99cdffa7fbfe..07e0a0c84f6e 100644 --- a/drivers/md/dm-exception-store.c +++ b/drivers/md/dm-exception-store.c @@ -1,7 +1,8 @@ /* - * dm-snapshot.c + * dm-exception-store.c * * Copyright (C) 2001-2002 Sistina Software (UK) Limited. + * Copyright (C) 2006 Red Hat GmbH * * This file is released under the GPL. */ @@ -123,6 +124,7 @@ struct pstore { atomic_t pending_count; uint32_t callback_count; struct commit_callback *callbacks; + struct dm_io_client *io_client; }; static inline unsigned int sectors_to_pages(unsigned int sectors) @@ -159,14 +161,20 @@ static void free_area(struct pstore *ps) */ static int chunk_io(struct pstore *ps, uint32_t chunk, int rw) { - struct io_region where; - unsigned long bits; - - where.bdev = ps->snap->cow->bdev; - where.sector = ps->snap->chunk_size * chunk; - where.count = ps->snap->chunk_size; - - return dm_io_sync_vm(1, &where, rw, ps->area, &bits); + struct io_region where = { + .bdev = ps->snap->cow->bdev, + .sector = ps->snap->chunk_size * chunk, + .count = ps->snap->chunk_size, + }; + struct dm_io_request io_req = { + .bi_rw = rw, + .mem.type = DM_IO_VMA, + .mem.ptr.vma = ps->area, + .client = ps->io_client, + .notify.fn = NULL, + }; + + return dm_io(&io_req, 1, &where, NULL); } /* @@ -213,17 +221,18 @@ static int read_header(struct pstore *ps, int *new_snapshot) chunk_size_supplied = 0; } - r = dm_io_get(sectors_to_pages(ps->snap->chunk_size)); - if (r) - return r; + ps->io_client = dm_io_client_create(sectors_to_pages(ps->snap-> + chunk_size)); + if (IS_ERR(ps->io_client)) + return PTR_ERR(ps->io_client); r = alloc_area(ps); if (r) - goto bad1; + return r; r = chunk_io(ps, 0, READ); if (r) - goto bad2; + goto bad; dh = (struct disk_header *) ps->area; @@ -235,7 +244,7 @@ static int read_header(struct pstore *ps, int *new_snapshot) if (le32_to_cpu(dh->magic) != SNAP_MAGIC) { DMWARN("Invalid or corrupt snapshot"); r = -ENXIO; - goto bad2; + goto bad; } *new_snapshot = 0; @@ -252,27 +261,22 @@ static int read_header(struct pstore *ps, int *new_snapshot) (unsigned long long)ps->snap->chunk_size); /* We had a bogus chunk_size. Fix stuff up. */ - dm_io_put(sectors_to_pages(ps->snap->chunk_size)); free_area(ps); ps->snap->chunk_size = chunk_size; ps->snap->chunk_mask = chunk_size - 1; ps->snap->chunk_shift = ffs(chunk_size) - 1; - r = dm_io_get(sectors_to_pages(chunk_size)); + r = dm_io_client_resize(sectors_to_pages(ps->snap->chunk_size), + ps->io_client); if (r) return r; r = alloc_area(ps); - if (r) - goto bad1; - - return 0; + return r; -bad2: +bad: free_area(ps); -bad1: - dm_io_put(sectors_to_pages(ps->snap->chunk_size)); return r; } @@ -405,7 +409,7 @@ static void persistent_destroy(struct exception_store *store) { struct pstore *ps = get_info(store); - dm_io_put(sectors_to_pages(ps->snap->chunk_size)); + dm_io_client_destroy(ps->io_client); vfree(ps->callbacks); free_area(ps); kfree(ps); diff --git a/drivers/md/dm-hw-handler.h b/drivers/md/dm-hw-handler.h index 32eff28e4adc..e0832e6fcf36 100644 --- a/drivers/md/dm-hw-handler.h +++ b/drivers/md/dm-hw-handler.h @@ -16,6 +16,7 @@ struct hw_handler_type; struct hw_handler { struct hw_handler_type *type; + struct mapped_device *md; void *context; }; diff --git a/drivers/md/dm-io.c b/drivers/md/dm-io.c index 8bdc8a87b249..352c6fbeac53 100644 --- a/drivers/md/dm-io.c +++ b/drivers/md/dm-io.c @@ -1,5 +1,6 @@ /* * Copyright (C) 2003 Sistina Software + * Copyright (C) 2006 Red Hat GmbH * * This file is released under the GPL. */ @@ -12,13 +13,17 @@ #include <linux/sched.h> #include <linux/slab.h> -static struct bio_set *_bios; +struct dm_io_client { + mempool_t *pool; + struct bio_set *bios; +}; /* FIXME: can we shrink this ? */ struct io { unsigned long error; atomic_t count; struct task_struct *sleeper; + struct dm_io_client *client; io_notify_fn callback; void *context; }; @@ -26,63 +31,58 @@ struct io { /* * io contexts are only dynamically allocated for asynchronous * io. Since async io is likely to be the majority of io we'll - * have the same number of io contexts as buffer heads ! (FIXME: - * must reduce this). + * have the same number of io contexts as bios! (FIXME: must reduce this). */ -static unsigned _num_ios; -static mempool_t *_io_pool; static unsigned int pages_to_ios(unsigned int pages) { return 4 * pages; /* too many ? */ } -static int resize_pool(unsigned int new_ios) +/* + * Create a client with mempool and bioset. + */ +struct dm_io_client *dm_io_client_create(unsigned num_pages) { - int r = 0; - - if (_io_pool) { - if (new_ios == 0) { - /* free off the pool */ - mempool_destroy(_io_pool); - _io_pool = NULL; - bioset_free(_bios); - - } else { - /* resize the pool */ - r = mempool_resize(_io_pool, new_ios, GFP_KERNEL); - } + unsigned ios = pages_to_ios(num_pages); + struct dm_io_client *client; - } else { - /* create new pool */ - _io_pool = mempool_create_kmalloc_pool(new_ios, - sizeof(struct io)); - if (!_io_pool) - return -ENOMEM; - - _bios = bioset_create(16, 16); - if (!_bios) { - mempool_destroy(_io_pool); - _io_pool = NULL; - return -ENOMEM; - } - } + client = kmalloc(sizeof(*client), GFP_KERNEL); + if (!client) + return ERR_PTR(-ENOMEM); + + client->pool = mempool_create_kmalloc_pool(ios, sizeof(struct io)); + if (!client->pool) + goto bad; - if (!r) - _num_ios = new_ios; + client->bios = bioset_create(16, 16); + if (!client->bios) + goto bad; - return r; + return client; + + bad: + if (client->pool) + mempool_destroy(client->pool); + kfree(client); + return ERR_PTR(-ENOMEM); } +EXPORT_SYMBOL(dm_io_client_create); -int dm_io_get(unsigned int num_pages) +int dm_io_client_resize(unsigned num_pages, struct dm_io_client *client) { - return resize_pool(_num_ios + pages_to_ios(num_pages)); + return mempool_resize(client->pool, pages_to_ios(num_pages), + GFP_KERNEL); } +EXPORT_SYMBOL(dm_io_client_resize); -void dm_io_put(unsigned int num_pages) +void dm_io_client_destroy(struct dm_io_client *client) { - resize_pool(_num_ios - pages_to_ios(num_pages)); + mempool_destroy(client->pool); + bioset_free(client->bios); + kfree(client); } +EXPORT_SYMBOL(dm_io_client_destroy); /*----------------------------------------------------------------- * We need to keep track of which region a bio is doing io for. @@ -118,7 +118,7 @@ static void dec_count(struct io *io, unsigned int region, int error) io_notify_fn fn = io->callback; void *context = io->context; - mempool_free(io, _io_pool); + mempool_free(io, io->client->pool); fn(r, context); } } @@ -126,7 +126,8 @@ static void dec_count(struct io *io, unsigned int region, int error) static int endio(struct bio *bio, unsigned int done, int error) { - struct io *io = (struct io *) bio->bi_private; + struct io *io; + unsigned region; /* keep going until we've finished */ if (bio->bi_size) @@ -135,10 +136,17 @@ static int endio(struct bio *bio, unsigned int done, int error) if (error && bio_data_dir(bio) == READ) zero_fill_bio(bio); - dec_count(io, bio_get_region(bio), error); + /* + * The bio destructor in bio_put() may use the io object. + */ + io = bio->bi_private; + region = bio_get_region(bio); + bio->bi_max_vecs++; bio_put(bio); + dec_count(io, region, error); + return 0; } @@ -209,6 +217,9 @@ static void bvec_dp_init(struct dpages *dp, struct bio_vec *bvec) dp->context_ptr = bvec; } +/* + * Functions for getting the pages from a VMA. + */ static void vm_get_page(struct dpages *dp, struct page **p, unsigned long *len, unsigned *offset) { @@ -233,7 +244,34 @@ static void vm_dp_init(struct dpages *dp, void *data) static void dm_bio_destructor(struct bio *bio) { - bio_free(bio, _bios); + struct io *io = bio->bi_private; + + bio_free(bio, io->client->bios); +} + +/* + * Functions for getting the pages from kernel memory. + */ +static void km_get_page(struct dpages *dp, struct page **p, unsigned long *len, + unsigned *offset) +{ + *p = virt_to_page(dp->context_ptr); + *offset = dp->context_u; + *len = PAGE_SIZE - dp->context_u; +} + +static void km_next_page(struct dpages *dp) +{ + dp->context_ptr += PAGE_SIZE - dp->context_u; + dp->context_u = 0; +} + +static void km_dp_init(struct dpages *dp, void *data) +{ + dp->get_page = km_get_page; + dp->next_page = km_next_page; + dp->context_u = ((unsigned long) data) & (PAGE_SIZE - 1); + dp->context_ptr = data; } /*----------------------------------------------------------------- @@ -256,7 +294,7 @@ static void do_region(int rw, unsigned int region, struct io_region *where, * to hide it from bio_add_page(). */ num_bvecs = (remaining / (PAGE_SIZE >> SECTOR_SHIFT)) + 2; - bio = bio_alloc_bioset(GFP_NOIO, num_bvecs, _bios); + bio = bio_alloc_bioset(GFP_NOIO, num_bvecs, io->client->bios); bio->bi_sector = where->sector + (where->count - remaining); bio->bi_bdev = where->bdev; bio->bi_end_io = endio; @@ -311,8 +349,9 @@ static void dispatch_io(int rw, unsigned int num_regions, dec_count(io, 0, 0); } -static int sync_io(unsigned int num_regions, struct io_region *where, - int rw, struct dpages *dp, unsigned long *error_bits) +static int sync_io(struct dm_io_client *client, unsigned int num_regions, + struct io_region *where, int rw, struct dpages *dp, + unsigned long *error_bits) { struct io io; @@ -324,6 +363,7 @@ static int sync_io(unsigned int num_regions, struct io_region *where, io.error = 0; atomic_set(&io.count, 1); /* see dispatch_io() */ io.sleeper = current; + io.client = client; dispatch_io(rw, num_regions, where, dp, &io, 1); @@ -340,12 +380,15 @@ static int sync_io(unsigned int num_regions, struct io_region *where, if (atomic_read(&io.count)) return -EINTR; - *error_bits = io.error; + if (error_bits) + *error_bits = io.error; + return io.error ? -EIO : 0; } -static int async_io(unsigned int num_regions, struct io_region *where, int rw, - struct dpages *dp, io_notify_fn fn, void *context) +static int async_io(struct dm_io_client *client, unsigned int num_regions, + struct io_region *where, int rw, struct dpages *dp, + io_notify_fn fn, void *context) { struct io *io; @@ -355,10 +398,11 @@ static int async_io(unsigned int num_regions, struct io_region *where, int rw, return -EIO; } - io = mempool_alloc(_io_pool, GFP_NOIO); + io = mempool_alloc(client->pool, GFP_NOIO); io->error = 0; atomic_set(&io->count, 1); /* see dispatch_io() */ io->sleeper = NULL; + io->client = client; io->callback = fn; io->context = context; @@ -366,61 +410,51 @@ static int async_io(unsigned int num_regions, struct io_region *where, int rw, return 0; } -int dm_io_sync(unsigned int num_regions, struct io_region *where, int rw, - struct page_list *pl, unsigned int offset, - unsigned long *error_bits) +static int dp_init(struct dm_io_request *io_req, struct dpages *dp) { - struct dpages dp; - list_dp_init(&dp, pl, offset); - return sync_io(num_regions, where, rw, &dp, error_bits); -} + /* Set up dpages based on memory type */ + switch (io_req->mem.type) { + case DM_IO_PAGE_LIST: + list_dp_init(dp, io_req->mem.ptr.pl, io_req->mem.offset); + break; + + case DM_IO_BVEC: + bvec_dp_init(dp, io_req->mem.ptr.bvec); + break; + + case DM_IO_VMA: + vm_dp_init(dp, io_req->mem.ptr.vma); + break; + + case DM_IO_KMEM: + km_dp_init(dp, io_req->mem.ptr.addr); + break; + + default: + return -EINVAL; + } -int dm_io_sync_bvec(unsigned int num_regions, struct io_region *where, int rw, - struct bio_vec *bvec, unsigned long *error_bits) -{ - struct dpages dp; - bvec_dp_init(&dp, bvec); - return sync_io(num_regions, where, rw, &dp, error_bits); + return 0; } -int dm_io_sync_vm(unsigned int num_regions, struct io_region *where, int rw, - void *data, unsigned long *error_bits) +/* + * New collapsed (a)synchronous interface + */ +int dm_io(struct dm_io_request *io_req, unsigned num_regions, + struct io_region *where, unsigned long *sync_error_bits) { + int r; struct dpages dp; - vm_dp_init(&dp, data); - return sync_io(num_regions, where, rw, &dp, error_bits); -} -int dm_io_async(unsigned int num_regions, struct io_region *where, int rw, - struct page_list *pl, unsigned int offset, - io_notify_fn fn, void *context) -{ - struct dpages dp; - list_dp_init(&dp, pl, offset); - return async_io(num_regions, where, rw, &dp, fn, context); -} + r = dp_init(io_req, &dp); + if (r) + return r; -int dm_io_async_bvec(unsigned int num_regions, struct io_region *where, int rw, - struct bio_vec *bvec, io_notify_fn fn, void *context) -{ - struct dpages dp; - bvec_dp_init(&dp, bvec); - return async_io(num_regions, where, rw, &dp, fn, context); -} + if (!io_req->notify.fn) + return sync_io(io_req->client, num_regions, where, + io_req->bi_rw, &dp, sync_error_bits); -int dm_io_async_vm(unsigned int num_regions, struct io_region *where, int rw, - void *data, io_notify_fn fn, void *context) -{ - struct dpages dp; - vm_dp_init(&dp, data); - return async_io(num_regions, where, rw, &dp, fn, context); + return async_io(io_req->client, num_regions, where, io_req->bi_rw, + &dp, io_req->notify.fn, io_req->notify.context); } - -EXPORT_SYMBOL(dm_io_get); -EXPORT_SYMBOL(dm_io_put); -EXPORT_SYMBOL(dm_io_sync); -EXPORT_SYMBOL(dm_io_async); -EXPORT_SYMBOL(dm_io_sync_bvec); -EXPORT_SYMBOL(dm_io_async_bvec); -EXPORT_SYMBOL(dm_io_sync_vm); -EXPORT_SYMBOL(dm_io_async_vm); +EXPORT_SYMBOL(dm_io); diff --git a/drivers/md/dm-io.h b/drivers/md/dm-io.h index f9035bfd1a9f..f647e2cceaa6 100644 --- a/drivers/md/dm-io.h +++ b/drivers/md/dm-io.h @@ -12,7 +12,7 @@ struct io_region { struct block_device *bdev; sector_t sector; - sector_t count; + sector_t count; /* If this is zero the region is ignored. */ }; struct page_list { @@ -20,55 +20,60 @@ struct page_list { struct page *page; }; - -/* - * 'error' is a bitset, with each bit indicating whether an error - * occurred doing io to the corresponding region. - */ typedef void (*io_notify_fn)(unsigned long error, void *context); +enum dm_io_mem_type { + DM_IO_PAGE_LIST,/* Page list */ + DM_IO_BVEC, /* Bio vector */ + DM_IO_VMA, /* Virtual memory area */ + DM_IO_KMEM, /* Kernel memory */ +}; + +struct dm_io_memory { + enum dm_io_mem_type type; + + union { + struct page_list *pl; + struct bio_vec *bvec; + void *vma; + void *addr; + } ptr; + + unsigned offset; +}; + +struct dm_io_notify { + io_notify_fn fn; /* Callback for asynchronous requests */ + void *context; /* Passed to callback */ +}; /* - * Before anyone uses the IO interface they should call - * dm_io_get(), specifying roughly how many pages they are - * expecting to perform io on concurrently. - * - * This function may block. + * IO request structure */ -int dm_io_get(unsigned int num_pages); -void dm_io_put(unsigned int num_pages); +struct dm_io_client; +struct dm_io_request { + int bi_rw; /* READ|WRITE - not READA */ + struct dm_io_memory mem; /* Memory to use for io */ + struct dm_io_notify notify; /* Synchronous if notify.fn is NULL */ + struct dm_io_client *client; /* Client memory handler */ +}; /* - * Synchronous IO. + * For async io calls, users can alternatively use the dm_io() function below + * and dm_io_client_create() to create private mempools for the client. * - * Please ensure that the rw flag in the next two functions is - * either READ or WRITE, ie. we don't take READA. Any - * regions with a zero count field will be ignored. + * Create/destroy may block. */ -int dm_io_sync(unsigned int num_regions, struct io_region *where, int rw, - struct page_list *pl, unsigned int offset, - unsigned long *error_bits); - -int dm_io_sync_bvec(unsigned int num_regions, struct io_region *where, int rw, - struct bio_vec *bvec, unsigned long *error_bits); - -int dm_io_sync_vm(unsigned int num_regions, struct io_region *where, int rw, - void *data, unsigned long *error_bits); +struct dm_io_client *dm_io_client_create(unsigned num_pages); +int dm_io_client_resize(unsigned num_pages, struct dm_io_client *client); +void dm_io_client_destroy(struct dm_io_client *client); /* - * Aynchronous IO. - * - * The 'where' array may be safely allocated on the stack since - * the function takes a copy. + * IO interface using private per-client pools. + * Each bit in the optional 'sync_error_bits' bitset indicates whether an + * error occurred doing io to the corresponding region. */ -int dm_io_async(unsigned int num_regions, struct io_region *where, int rw, - struct page_list *pl, unsigned int offset, - io_notify_fn fn, void *context); - -int dm_io_async_bvec(unsigned int num_regions, struct io_region *where, int rw, - struct bio_vec *bvec, io_notify_fn fn, void *context); - -int dm_io_async_vm(unsigned int num_regions, struct io_region *where, int rw, - void *data, io_notify_fn fn, void *context); +int dm_io(struct dm_io_request *io_req, unsigned num_regions, + struct io_region *region, unsigned long *sync_error_bits); #endif diff --git a/drivers/md/dm-log.c b/drivers/md/dm-log.c index 6a9261351848..a66428d860fe 100644 --- a/drivers/md/dm-log.c +++ b/drivers/md/dm-log.c @@ -149,9 +149,12 @@ struct log_c { FORCESYNC, /* Force a sync to happen */ } sync; + struct dm_io_request io_req; + /* * Disk log fields */ + int log_dev_failed; struct dm_dev *log_dev; struct log_header header; @@ -199,13 +202,20 @@ static void header_from_disk(struct log_header *core, struct log_header *disk) core->nr_regions = le64_to_cpu(disk->nr_regions); } +static int rw_header(struct log_c *lc, int rw) +{ + lc->io_req.bi_rw = rw; + lc->io_req.mem.ptr.vma = lc->disk_header; + lc->io_req.notify.fn = NULL; + + return dm_io(&lc->io_req, 1, &lc->header_location, NULL); +} + static int read_header(struct log_c *log) { int r; - unsigned long ebits; - r = dm_io_sync_vm(1, &log->header_location, READ, - log->disk_header, &ebits); + r = rw_header(log, READ); if (r) return r; @@ -233,11 +243,8 @@ static int read_header(struct log_c *log) static inline int write_header(struct log_c *log) { - unsigned long ebits; - header_to_disk(&log->header, log->disk_header); - return dm_io_sync_vm(1, &log->header_location, WRITE, - log->disk_header, &ebits); + return rw_header(log, WRITE); } /*---------------------------------------------------------------- @@ -256,6 +263,7 @@ static int create_log_context(struct dirty_log *log, struct dm_target *ti, uint32_t region_size; unsigned int region_count; size_t bitset_size, buf_size; + int r; if (argc < 1 || argc > 2) { DMWARN("wrong number of arguments to mirror log"); @@ -315,6 +323,7 @@ static int create_log_context(struct dirty_log *log, struct dm_target *ti, lc->disk_header = NULL; } else { lc->log_dev = dev; + lc->log_dev_failed = 0; lc->header_location.bdev = lc->log_dev->bdev; lc->header_location.sector = 0; @@ -324,6 +333,15 @@ static int create_log_context(struct dirty_log *log, struct dm_target *ti, buf_size = dm_round_up((LOG_OFFSET << SECTOR_SHIFT) + bitset_size, ti->limits.hardsect_size); lc->header_location.count = buf_size >> SECTOR_SHIFT; + lc->io_req.mem.type = DM_IO_VMA; + lc->io_req.client = dm_io_client_create(dm_div_up(buf_size, + PAGE_SIZE)); + if (IS_ERR(lc->io_req.client)) { + r = PTR_ERR(lc->io_req.client); + DMWARN("couldn't allocate disk io client"); + kfree(lc); + return -ENOMEM; + } lc->disk_header = vmalloc(buf_size); if (!lc->disk_header) { @@ -424,6 +442,7 @@ static void disk_dtr(struct dirty_log *log) dm_put_device(lc->ti, lc->log_dev); vfree(lc->disk_header); + dm_io_client_destroy(lc->io_req.client); destroy_log_context(lc); } @@ -437,6 +456,15 @@ static int count_bits32(uint32_t *addr, unsigned size) return count; } +static void fail_log_device(struct log_c *lc) +{ + if (lc->log_dev_failed) + return; + + lc->log_dev_failed = 1; + dm_table_event(lc->ti->table); +} + static int disk_resume(struct dirty_log *log) { int r; @@ -446,8 +474,19 @@ static int disk_resume(struct dirty_log *log) /* read the disk header */ r = read_header(lc); - if (r) - return r; + if (r) { + DMWARN("%s: Failed to read header on mirror log device", + lc->log_dev->name); + fail_log_device(lc); + /* + * If the log device cannot be read, we must assume + * all regions are out-of-sync. If we simply return + * here, the state will be uninitialized and could + * lead us to return 'in-sync' status for regions + * that are actually 'out-of-sync'. + */ + lc->header.nr_regions = 0; + } /* set or clear any new bits -- device has grown */ if (lc->sync == NOSYNC) @@ -472,7 +511,14 @@ static int disk_resume(struct dirty_log *log) lc->header.nr_regions = lc->region_count; /* write the new header */ - return write_header(lc); + r = write_header(lc); + if (r) { + DMWARN("%s: Failed to write header on mirror log device", + lc->log_dev->name); + fail_log_device(lc); + } + + return r; } static uint32_t core_get_region_size(struct dirty_log *log) @@ -516,7 +562,9 @@ static int disk_flush(struct dirty_log *log) return 0; r = write_header(lc); - if (!r) + if (r) + fail_log_device(lc); + else lc->touched = 0; return r; @@ -591,6 +639,7 @@ static int core_status(struct dirty_log *log, status_type_t status, switch(status) { case STATUSTYPE_INFO: + DMEMIT("1 %s", log->type->name); break; case STATUSTYPE_TABLE: @@ -606,17 +655,17 @@ static int disk_status(struct dirty_log *log, status_type_t status, char *result, unsigned int maxlen) { int sz = 0; - char buffer[16]; struct log_c *lc = log->context; switch(status) { case STATUSTYPE_INFO: + DMEMIT("3 %s %s %c", log->type->name, lc->log_dev->name, + lc->log_dev_failed ? 'D' : 'A'); break; case STATUSTYPE_TABLE: - format_dev_t(buffer, lc->log_dev->bdev->bd_dev); DMEMIT("%s %u %s %u ", log->type->name, - lc->sync == DEFAULTSYNC ? 2 : 3, buffer, + lc->sync == DEFAULTSYNC ? 2 : 3, lc->log_dev->name, lc->region_size); DMEMIT_SYNC; } diff --git a/drivers/md/dm-mpath.c b/drivers/md/dm-mpath.c index 3aa013506967..de54b39e6ffe 100644 --- a/drivers/md/dm-mpath.c +++ b/drivers/md/dm-mpath.c @@ -668,6 +668,9 @@ static int parse_hw_handler(struct arg_set *as, struct multipath *m) return -EINVAL; } + m->hw_handler.md = dm_table_get_md(ti->table); + dm_put(m->hw_handler.md); + r = hwht->create(&m->hw_handler, hw_argc - 1, as->argv); if (r) { dm_put_hw_handler(hwht); diff --git a/drivers/md/dm-raid1.c b/drivers/md/dm-raid1.c index 23a642619bed..ef124b71ccc8 100644 --- a/drivers/md/dm-raid1.c +++ b/drivers/md/dm-raid1.c @@ -21,15 +21,11 @@ #include <linux/workqueue.h> #define DM_MSG_PREFIX "raid1" +#define DM_IO_PAGES 64 -static struct workqueue_struct *_kmirrord_wq; -static struct work_struct _kmirrord_work; -static DECLARE_WAIT_QUEUE_HEAD(_kmirrord_recovery_stopped); +#define DM_RAID1_HANDLE_ERRORS 0x01 -static inline void wake(void) -{ - queue_work(_kmirrord_wq, &_kmirrord_work); -} +static DECLARE_WAIT_QUEUE_HEAD(_kmirrord_recovery_stopped); /*----------------------------------------------------------------- * Region hash @@ -125,17 +121,23 @@ struct mirror_set { struct list_head list; struct region_hash rh; struct kcopyd_client *kcopyd_client; + uint64_t features; spinlock_t lock; /* protects the next two lists */ struct bio_list reads; struct bio_list writes; + struct dm_io_client *io_client; + /* recovery */ region_t nr_regions; int in_sync; struct mirror *default_mirror; /* Default mirror */ + struct workqueue_struct *kmirrord_wq; + struct work_struct kmirrord_work; + unsigned int nr_mirrors; struct mirror mirror[0]; }; @@ -153,6 +155,11 @@ static inline sector_t region_to_sector(struct region_hash *rh, region_t region) return region << rh->region_shift; } +static void wake(struct mirror_set *ms) +{ + queue_work(ms->kmirrord_wq, &ms->kmirrord_work); +} + /* FIXME move this */ static void queue_bio(struct mirror_set *ms, struct bio *bio, int rw); @@ -398,8 +405,7 @@ static void rh_update_states(struct region_hash *rh) mempool_free(reg, rh->region_pool); } - if (!list_empty(&recovered)) - rh->log->type->flush(rh->log); + rh->log->type->flush(rh->log); list_for_each_entry_safe (reg, next, &clean, list) mempool_free(reg, rh->region_pool); @@ -471,7 +477,7 @@ static void rh_dec(struct region_hash *rh, region_t region) spin_unlock_irqrestore(&rh->region_lock, flags); if (should_wake) - wake(); + wake(rh->ms); } /* @@ -558,7 +564,7 @@ static void rh_recovery_end(struct region *reg, int success) list_add(®->list, ®->rh->recovered_regions); spin_unlock_irq(&rh->region_lock); - wake(); + wake(rh->ms); } static void rh_flush(struct region_hash *rh) @@ -592,7 +598,7 @@ static void rh_start_recovery(struct region_hash *rh) for (i = 0; i < MAX_RECOVERY; i++) up(&rh->recovery_count); - wake(); + wake(rh->ms); } /* @@ -735,7 +741,7 @@ static void do_reads(struct mirror_set *ms, struct bio_list *reads) /* * We can only read balance if the region is in sync. */ - if (rh_in_sync(&ms->rh, region, 0)) + if (rh_in_sync(&ms->rh, region, 1)) m = choose_mirror(ms, bio->bi_sector); else m = ms->default_mirror; @@ -792,6 +798,14 @@ static void do_write(struct mirror_set *ms, struct bio *bio) unsigned int i; struct io_region io[KCOPYD_MAX_REGIONS+1]; struct mirror *m; + struct dm_io_request io_req = { + .bi_rw = WRITE, + .mem.type = DM_IO_BVEC, + .mem.ptr.bvec = bio->bi_io_vec + bio->bi_idx, + .notify.fn = write_callback, + .notify.context = bio, + .client = ms->io_client, + }; for (i = 0; i < ms->nr_mirrors; i++) { m = ms->mirror + i; @@ -802,9 +816,8 @@ static void do_write(struct mirror_set *ms, struct bio *bio) } bio_set_ms(bio, ms); - dm_io_async_bvec(ms->nr_mirrors, io, WRITE, - bio->bi_io_vec + bio->bi_idx, - write_callback, bio); + + (void) dm_io(&io_req, ms->nr_mirrors, io, NULL); } static void do_writes(struct mirror_set *ms, struct bio_list *writes) @@ -870,11 +883,10 @@ static void do_writes(struct mirror_set *ms, struct bio_list *writes) /*----------------------------------------------------------------- * kmirrord *---------------------------------------------------------------*/ -static LIST_HEAD(_mirror_sets); -static DECLARE_RWSEM(_mirror_sets_lock); - -static void do_mirror(struct mirror_set *ms) +static void do_mirror(struct work_struct *work) { + struct mirror_set *ms =container_of(work, struct mirror_set, + kmirrord_work); struct bio_list reads, writes; spin_lock(&ms->lock); @@ -890,16 +902,6 @@ static void do_mirror(struct mirror_set *ms) do_writes(ms, &writes); } -static void do_work(struct work_struct *ignored) -{ - struct mirror_set *ms; - - down_read(&_mirror_sets_lock); - list_for_each_entry (ms, &_mirror_sets, list) - do_mirror(ms); - up_read(&_mirror_sets_lock); -} - /*----------------------------------------------------------------- * Target functions *---------------------------------------------------------------*/ @@ -931,6 +933,13 @@ static struct mirror_set *alloc_context(unsigned int nr_mirrors, ms->in_sync = 0; ms->default_mirror = &ms->mirror[DEFAULT_MIRROR]; + ms->io_client = dm_io_client_create(DM_IO_PAGES); + if (IS_ERR(ms->io_client)) { + ti->error = "Error creating dm_io client"; + kfree(ms); + return NULL; + } + if (rh_init(&ms->rh, ms, dl, region_size, ms->nr_regions)) { ti->error = "Error creating dirty region hash"; kfree(ms); @@ -946,6 +955,7 @@ static void free_context(struct mirror_set *ms, struct dm_target *ti, while (m--) dm_put_device(ti, ms->mirror[m].dev); + dm_io_client_destroy(ms->io_client); rh_exit(&ms->rh); kfree(ms); } @@ -978,23 +988,6 @@ static int get_mirror(struct mirror_set *ms, struct dm_target *ti, return 0; } -static int add_mirror_set(struct mirror_set *ms) -{ - down_write(&_mirror_sets_lock); - list_add_tail(&ms->list, &_mirror_sets); - up_write(&_mirror_sets_lock); - wake(); - - return 0; -} - -static void del_mirror_set(struct mirror_set *ms) -{ - down_write(&_mirror_sets_lock); - list_del(&ms->list); - up_write(&_mirror_sets_lock); -} - /* * Create dirty log: log_type #log_params <log_params> */ @@ -1037,16 +1030,55 @@ static struct dirty_log *create_dirty_log(struct dm_target *ti, return dl; } +static int parse_features(struct mirror_set *ms, unsigned argc, char **argv, + unsigned *args_used) +{ + unsigned num_features; + struct dm_target *ti = ms->ti; + + *args_used = 0; + + if (!argc) + return 0; + + if (sscanf(argv[0], "%u", &num_features) != 1) { + ti->error = "Invalid number of features"; + return -EINVAL; + } + + argc--; + argv++; + (*args_used)++; + + if (num_features > argc) { + ti->error = "Not enough arguments to support feature count"; + return -EINVAL; + } + + if (!strcmp("handle_errors", argv[0])) + ms->features |= DM_RAID1_HANDLE_ERRORS; + else { + ti->error = "Unrecognised feature requested"; + return -EINVAL; + } + + (*args_used)++; + + return 0; +} + /* * Construct a mirror mapping: * * log_type #log_params <log_params> * #mirrors [mirror_path offset]{2,} + * [#features <features>] * * log_type is "core" or "disk" * #log_params is between 1 and 3 + * + * If present, features must be "handle_errors". */ -#define DM_IO_PAGES 64 static int mirror_ctr(struct dm_target *ti, unsigned int argc, char **argv) { int r; @@ -1070,8 +1102,8 @@ static int mirror_ctr(struct dm_target *ti, unsigned int argc, char **argv) argv++, argc--; - if (argc != nr_mirrors * 2) { - ti->error = "Wrong number of mirror arguments"; + if (argc < nr_mirrors * 2) { + ti->error = "Too few mirror arguments"; dm_destroy_dirty_log(dl); return -EINVAL; } @@ -1096,13 +1128,37 @@ static int mirror_ctr(struct dm_target *ti, unsigned int argc, char **argv) ti->private = ms; ti->split_io = ms->rh.region_size; + ms->kmirrord_wq = create_singlethread_workqueue("kmirrord"); + if (!ms->kmirrord_wq) { + DMERR("couldn't start kmirrord"); + free_context(ms, ti, m); + return -ENOMEM; + } + INIT_WORK(&ms->kmirrord_work, do_mirror); + + r = parse_features(ms, argc, argv, &args_used); + if (r) { + free_context(ms, ti, ms->nr_mirrors); + return r; + } + + argv += args_used; + argc -= args_used; + + if (argc) { + ti->error = "Too many mirror arguments"; + free_context(ms, ti, ms->nr_mirrors); + return -EINVAL; + } + r = kcopyd_client_create(DM_IO_PAGES, &ms->kcopyd_client); if (r) { + destroy_workqueue(ms->kmirrord_wq); free_context(ms, ti, ms->nr_mirrors); return r; } - add_mirror_set(ms); + wake(ms); return 0; } @@ -1110,8 +1166,9 @@ static void mirror_dtr(struct dm_target *ti) { struct mirror_set *ms = (struct mirror_set *) ti->private; - del_mirror_set(ms); + flush_workqueue(ms->kmirrord_wq); kcopyd_client_destroy(ms->kcopyd_client); + destroy_workqueue(ms->kmirrord_wq); free_context(ms, ti, ms->nr_mirrors); } @@ -1127,7 +1184,7 @@ static void queue_bio(struct mirror_set *ms, struct bio *bio, int rw) spin_unlock(&ms->lock); if (should_wake) - wake(); + wake(ms); } /* @@ -1222,11 +1279,9 @@ static void mirror_resume(struct dm_target *ti) static int mirror_status(struct dm_target *ti, status_type_t type, char *result, unsigned int maxlen) { - unsigned int m, sz; + unsigned int m, sz = 0; struct mirror_set *ms = (struct mirror_set *) ti->private; - sz = ms->rh.log->type->status(ms->rh.log, type, result, maxlen); - switch (type) { case STATUSTYPE_INFO: DMEMIT("%d ", ms->nr_mirrors); @@ -1237,13 +1292,21 @@ static int mirror_status(struct dm_target *ti, status_type_t type, (unsigned long long)ms->rh.log->type-> get_sync_count(ms->rh.log), (unsigned long long)ms->nr_regions); + + sz = ms->rh.log->type->status(ms->rh.log, type, result, maxlen); + break; case STATUSTYPE_TABLE: + sz = ms->rh.log->type->status(ms->rh.log, type, result, maxlen); + DMEMIT("%d", ms->nr_mirrors); for (m = 0; m < ms->nr_mirrors; m++) DMEMIT(" %s %llu", ms->mirror[m].dev->name, (unsigned long long)ms->mirror[m].offset); + + if (ms->features & DM_RAID1_HANDLE_ERRORS) + DMEMIT(" 1 handle_errors"); } return 0; @@ -1251,7 +1314,7 @@ static int mirror_status(struct dm_target *ti, status_type_t type, static struct target_type mirror_target = { .name = "mirror", - .version = {1, 0, 2}, + .version = {1, 0, 3}, .module = THIS_MODULE, .ctr = mirror_ctr, .dtr = mirror_dtr, @@ -1270,20 +1333,11 @@ static int __init dm_mirror_init(void) if (r) return r; - _kmirrord_wq = create_singlethread_workqueue("kmirrord"); - if (!_kmirrord_wq) { - DMERR("couldn't start kmirrord"); - dm_dirty_log_exit(); - return r; - } - INIT_WORK(&_kmirrord_work, do_work); - r = dm_register_target(&mirror_target); if (r < 0) { DMERR("%s: Failed to register mirror target", mirror_target.name); dm_dirty_log_exit(); - destroy_workqueue(_kmirrord_wq); } return r; @@ -1297,7 +1351,6 @@ static void __exit dm_mirror_exit(void) if (r < 0) DMERR("%s: unregister failed %d", mirror_target.name, r); - destroy_workqueue(_kmirrord_wq); dm_dirty_log_exit(); } diff --git a/drivers/md/dm-table.c b/drivers/md/dm-table.c index 05befa91807a..2fc199b0016b 100644 --- a/drivers/md/dm-table.c +++ b/drivers/md/dm-table.c @@ -425,13 +425,15 @@ static void close_dev(struct dm_dev *d, struct mapped_device *md) } /* - * If possible (ie. blk_size[major] is set), this checks an area - * of a destination device is valid. + * If possible, this checks an area of a destination device is valid. */ static int check_device_area(struct dm_dev *dd, sector_t start, sector_t len) { - sector_t dev_size; - dev_size = dd->bdev->bd_inode->i_size >> SECTOR_SHIFT; + sector_t dev_size = dd->bdev->bd_inode->i_size >> SECTOR_SHIFT; + + if (!dev_size) + return 1; + return ((start < dev_size) && (len <= (dev_size - start))); } diff --git a/drivers/md/dm.c b/drivers/md/dm.c index 11a98df298ec..2717a355dc5b 100644 --- a/drivers/md/dm.c +++ b/drivers/md/dm.c @@ -1236,6 +1236,7 @@ void dm_put(struct mapped_device *md) free_dev(md); } } +EXPORT_SYMBOL_GPL(dm_put); /* * Process the deferred bios diff --git a/drivers/md/kcopyd.c b/drivers/md/kcopyd.c index b46f6c575f7e..dbc234e3c69f 100644 --- a/drivers/md/kcopyd.c +++ b/drivers/md/kcopyd.c @@ -1,5 +1,6 @@ /* * Copyright (C) 2002 Sistina Software (UK) Limited. + * Copyright (C) 2006 Red Hat GmbH * * This file is released under the GPL. * @@ -45,6 +46,8 @@ struct kcopyd_client { unsigned int nr_pages; unsigned int nr_free_pages; + struct dm_io_client *io_client; + wait_queue_head_t destroyq; atomic_t nr_jobs; }; @@ -342,16 +345,20 @@ static void complete_io(unsigned long error, void *context) static int run_io_job(struct kcopyd_job *job) { int r; + struct dm_io_request io_req = { + .bi_rw = job->rw, + .mem.type = DM_IO_PAGE_LIST, + .mem.ptr.pl = job->pages, + .mem.offset = job->offset, + .notify.fn = complete_io, + .notify.context = job, + .client = job->kc->io_client, + }; if (job->rw == READ) - r = dm_io_async(1, &job->source, job->rw, - job->pages, - job->offset, complete_io, job); - + r = dm_io(&io_req, 1, &job->source, NULL); else - r = dm_io_async(job->num_dests, job->dests, job->rw, - job->pages, - job->offset, complete_io, job); + r = dm_io(&io_req, job->num_dests, job->dests, NULL); return r; } @@ -670,8 +677,9 @@ int kcopyd_client_create(unsigned int nr_pages, struct kcopyd_client **result) return r; } - r = dm_io_get(nr_pages); - if (r) { + kc->io_client = dm_io_client_create(nr_pages); + if (IS_ERR(kc->io_client)) { + r = PTR_ERR(kc->io_client); client_free_pages(kc); kfree(kc); kcopyd_exit(); @@ -691,7 +699,7 @@ void kcopyd_client_destroy(struct kcopyd_client *kc) /* Wait for completion of all jobs submitted by this client. */ wait_event(kc->destroyq, !atomic_read(&kc->nr_jobs)); - dm_io_put(kc->nr_pages); + dm_io_client_destroy(kc->io_client); client_free_pages(kc); client_del(kc); kfree(kc); diff --git a/drivers/md/md.c b/drivers/md/md.c index 2b4315d7e5d6..2901d0c0ee9e 100644 --- a/drivers/md/md.c +++ b/drivers/md/md.c @@ -33,6 +33,7 @@ */ #include <linux/module.h> +#include <linux/kernel.h> #include <linux/kthread.h> #include <linux/linkage.h> #include <linux/raid/md.h> @@ -273,6 +274,7 @@ static mddev_t * mddev_find(dev_t unit) atomic_set(&new->active, 1); spin_lock_init(&new->write_lock); init_waitqueue_head(&new->sb_wait); + new->reshape_position = MaxSector; new->queue = blk_alloc_queue(GFP_KERNEL); if (!new->queue) { @@ -589,14 +591,41 @@ abort: return ret; } + +static u32 md_csum_fold(u32 csum) +{ + csum = (csum & 0xffff) + (csum >> 16); + return (csum & 0xffff) + (csum >> 16); +} + static unsigned int calc_sb_csum(mdp_super_t * sb) { + u64 newcsum = 0; + u32 *sb32 = (u32*)sb; + int i; unsigned int disk_csum, csum; disk_csum = sb->sb_csum; sb->sb_csum = 0; - csum = csum_partial((void *)sb, MD_SB_BYTES, 0); + + for (i = 0; i < MD_SB_BYTES/4 ; i++) + newcsum += sb32[i]; + csum = (newcsum & 0xffffffff) + (newcsum>>32); + + +#ifdef CONFIG_ALPHA + /* This used to use csum_partial, which was wrong for several + * reasons including that different results are returned on + * different architectures. It isn't critical that we get exactly + * the same return value as before (we always csum_fold before + * testing, and that removes any differences). However as we + * know that csum_partial always returned a 16bit value on + * alphas, do a fold to maximise conformity to previous behaviour. + */ + sb->sb_csum = md_csum_fold(disk_csum); +#else sb->sb_csum = disk_csum; +#endif return csum; } @@ -684,7 +713,7 @@ static int super_90_load(mdk_rdev_t *rdev, mdk_rdev_t *refdev, int minor_version if (sb->raid_disks <= 0) goto abort; - if (csum_fold(calc_sb_csum(sb)) != csum_fold(sb->sb_csum)) { + if (md_csum_fold(calc_sb_csum(sb)) != md_csum_fold(sb->sb_csum)) { printk(KERN_WARNING "md: invalid superblock checksum on %s\n", b); goto abort; @@ -694,6 +723,17 @@ static int super_90_load(mdk_rdev_t *rdev, mdk_rdev_t *refdev, int minor_version rdev->data_offset = 0; rdev->sb_size = MD_SB_BYTES; + if (sb->state & (1<<MD_SB_BITMAP_PRESENT)) { + if (sb->level != 1 && sb->level != 4 + && sb->level != 5 && sb->level != 6 + && sb->level != 10) { + /* FIXME use a better test */ + printk(KERN_WARNING + "md: bitmaps not supported for this level.\n"); + goto abort; + } + } + if (sb->level == LEVEL_MULTIPATH) rdev->desc_nr = -1; else @@ -792,16 +832,8 @@ static int super_90_validate(mddev_t *mddev, mdk_rdev_t *rdev) mddev->max_disks = MD_SB_DISKS; if (sb->state & (1<<MD_SB_BITMAP_PRESENT) && - mddev->bitmap_file == NULL) { - if (mddev->level != 1 && mddev->level != 4 - && mddev->level != 5 && mddev->level != 6 - && mddev->level != 10) { - /* FIXME use a better test */ - printk(KERN_WARNING "md: bitmaps not supported for this level.\n"); - return -EINVAL; - } + mddev->bitmap_file == NULL) mddev->bitmap_offset = mddev->default_bitmap_offset; - } } else if (mddev->pers == NULL) { /* Insist on good event counter while assembling */ @@ -1058,6 +1090,18 @@ static int super_1_load(mdk_rdev_t *rdev, mdk_rdev_t *refdev, int minor_version) bdevname(rdev->bdev,b)); return -EINVAL; } + if ((le32_to_cpu(sb->feature_map) & MD_FEATURE_BITMAP_OFFSET)) { + if (sb->level != cpu_to_le32(1) && + sb->level != cpu_to_le32(4) && + sb->level != cpu_to_le32(5) && + sb->level != cpu_to_le32(6) && + sb->level != cpu_to_le32(10)) { + printk(KERN_WARNING + "md: bitmaps not supported for this level.\n"); + return -EINVAL; + } + } + rdev->preferred_minor = 0xffff; rdev->data_offset = le64_to_cpu(sb->data_offset); atomic_set(&rdev->corrected_errors, le32_to_cpu(sb->cnt_corrected_read)); @@ -1141,14 +1185,9 @@ static int super_1_validate(mddev_t *mddev, mdk_rdev_t *rdev) mddev->max_disks = (4096-256)/2; if ((le32_to_cpu(sb->feature_map) & MD_FEATURE_BITMAP_OFFSET) && - mddev->bitmap_file == NULL ) { - if (mddev->level != 1 && mddev->level != 5 && mddev->level != 6 - && mddev->level != 10) { - printk(KERN_WARNING "md: bitmaps not supported for this level.\n"); - return -EINVAL; - } + mddev->bitmap_file == NULL ) mddev->bitmap_offset = (__s32)le32_to_cpu(sb->bitmap_offset); - } + if ((le32_to_cpu(sb->feature_map) & MD_FEATURE_RESHAPE_ACTIVE)) { mddev->reshape_position = le64_to_cpu(sb->reshape_position); mddev->delta_disks = le32_to_cpu(sb->delta_disks); @@ -2204,6 +2243,10 @@ static ssize_t layout_show(mddev_t *mddev, char *page) { /* just a number, not meaningful for all levels */ + if (mddev->reshape_position != MaxSector && + mddev->layout != mddev->new_layout) + return sprintf(page, "%d (%d)\n", + mddev->new_layout, mddev->layout); return sprintf(page, "%d\n", mddev->layout); } @@ -2212,13 +2255,16 @@ layout_store(mddev_t *mddev, const char *buf, size_t len) { char *e; unsigned long n = simple_strtoul(buf, &e, 10); - if (mddev->pers) - return -EBUSY; if (!*buf || (*e && *e != '\n')) return -EINVAL; - mddev->layout = n; + if (mddev->pers) + return -EBUSY; + if (mddev->reshape_position != MaxSector) + mddev->new_layout = n; + else + mddev->layout = n; return len; } static struct md_sysfs_entry md_layout = @@ -2230,6 +2276,10 @@ raid_disks_show(mddev_t *mddev, char *page) { if (mddev->raid_disks == 0) return 0; + if (mddev->reshape_position != MaxSector && + mddev->delta_disks != 0) + return sprintf(page, "%d (%d)\n", mddev->raid_disks, + mddev->raid_disks - mddev->delta_disks); return sprintf(page, "%d\n", mddev->raid_disks); } @@ -2247,7 +2297,11 @@ raid_disks_store(mddev_t *mddev, const char *buf, size_t len) if (mddev->pers) rv = update_raid_disks(mddev, n); - else + else if (mddev->reshape_position != MaxSector) { + int olddisks = mddev->raid_disks - mddev->delta_disks; + mddev->delta_disks = n - olddisks; + mddev->raid_disks = n; + } else mddev->raid_disks = n; return rv ? rv : len; } @@ -2257,6 +2311,10 @@ __ATTR(raid_disks, S_IRUGO|S_IWUSR, raid_disks_show, raid_disks_store); static ssize_t chunk_size_show(mddev_t *mddev, char *page) { + if (mddev->reshape_position != MaxSector && + mddev->chunk_size != mddev->new_chunk) + return sprintf(page, "%d (%d)\n", mddev->new_chunk, + mddev->chunk_size); return sprintf(page, "%d\n", mddev->chunk_size); } @@ -2267,12 +2325,15 @@ chunk_size_store(mddev_t *mddev, const char *buf, size_t len) char *e; unsigned long n = simple_strtoul(buf, &e, 10); - if (mddev->pers) - return -EBUSY; if (!*buf || (*e && *e != '\n')) return -EINVAL; - mddev->chunk_size = n; + if (mddev->pers) + return -EBUSY; + else if (mddev->reshape_position != MaxSector) + mddev->new_chunk = n; + else + mddev->chunk_size = n; return len; } static struct md_sysfs_entry md_chunk_size = @@ -2637,8 +2698,7 @@ metadata_store(mddev_t *mddev, const char *buf, size_t len) minor = simple_strtoul(buf, &e, 10); if (e==buf || (*e && *e != '\n') ) return -EINVAL; - if (major >= sizeof(super_types)/sizeof(super_types[0]) || - super_types[major].name == NULL) + if (major >= ARRAY_SIZE(super_types) || super_types[major].name == NULL) return -ENOENT; mddev->major_version = major; mddev->minor_version = minor; @@ -2859,6 +2919,37 @@ suspend_hi_store(mddev_t *mddev, const char *buf, size_t len) static struct md_sysfs_entry md_suspend_hi = __ATTR(suspend_hi, S_IRUGO|S_IWUSR, suspend_hi_show, suspend_hi_store); +static ssize_t +reshape_position_show(mddev_t *mddev, char *page) +{ + if (mddev->reshape_position != MaxSector) + return sprintf(page, "%llu\n", + (unsigned long long)mddev->reshape_position); + strcpy(page, "none\n"); + return 5; +} + +static ssize_t +reshape_position_store(mddev_t *mddev, const char *buf, size_t len) +{ + char *e; + unsigned long long new = simple_strtoull(buf, &e, 10); + if (mddev->pers) + return -EBUSY; + if (buf == e || (*e && *e != '\n')) + return -EINVAL; + mddev->reshape_position = new; + mddev->delta_disks = 0; + mddev->new_level = mddev->level; + mddev->new_layout = mddev->layout; + mddev->new_chunk = mddev->chunk_size; + return len; +} + +static struct md_sysfs_entry md_reshape_position = +__ATTR(reshape_position, S_IRUGO|S_IWUSR, reshape_position_show, + reshape_position_store); + static struct attribute *md_default_attrs[] = { &md_level.attr, @@ -2871,6 +2962,7 @@ static struct attribute *md_default_attrs[] = { &md_new_device.attr, &md_safe_delay.attr, &md_array_state.attr, + &md_reshape_position.attr, NULL, }; @@ -3012,6 +3104,7 @@ static int do_md_run(mddev_t * mddev) struct gendisk *disk; struct mdk_personality *pers; char b[BDEVNAME_SIZE]; + struct block_device *bdev; if (list_empty(&mddev->disks)) /* cannot run an array with no devices.. */ @@ -3239,7 +3332,13 @@ static int do_md_run(mddev_t * mddev) md_wakeup_thread(mddev->thread); md_wakeup_thread(mddev->sync_thread); /* possibly kick off a reshape */ - mddev->changed = 1; + bdev = bdget_disk(mddev->gendisk, 0); + if (bdev) { + bd_set_size(bdev, mddev->array_size << 1); + blkdev_ioctl(bdev->bd_inode, NULL, BLKRRPART, 0); + bdput(bdev); + } + md_new_event(mddev); kobject_uevent(&mddev->gendisk->kobj, KOBJ_CHANGE); return 0; @@ -3361,7 +3460,6 @@ static int do_md_stop(mddev_t * mddev, int mode) mddev->pers = NULL; set_capacity(disk, 0); - mddev->changed = 1; if (mddev->ro) mddev->ro = 0; @@ -3409,6 +3507,7 @@ static int do_md_stop(mddev_t * mddev, int mode) mddev->size = 0; mddev->raid_disks = 0; mddev->recovery_cp = 0; + mddev->reshape_position = MaxSector; } else if (mddev->pers) printk(KERN_INFO "md: %s switched to read-only mode.\n", @@ -4019,7 +4118,7 @@ static int set_array_info(mddev_t * mddev, mdu_array_info_t *info) if (info->raid_disks == 0) { /* just setting version number for superblock loading */ if (info->major_version < 0 || - info->major_version >= sizeof(super_types)/sizeof(super_types[0]) || + info->major_version >= ARRAY_SIZE(super_types) || super_types[info->major_version].name == NULL) { /* maybe try to auto-load a module? */ printk(KERN_INFO @@ -4500,20 +4599,6 @@ static int md_release(struct inode *inode, struct file * file) return 0; } -static int md_media_changed(struct gendisk *disk) -{ - mddev_t *mddev = disk->private_data; - - return mddev->changed; -} - -static int md_revalidate(struct gendisk *disk) -{ - mddev_t *mddev = disk->private_data; - - mddev->changed = 0; - return 0; -} static struct block_device_operations md_fops = { .owner = THIS_MODULE, @@ -4521,8 +4606,6 @@ static struct block_device_operations md_fops = .release = md_release, .ioctl = md_ioctl, .getgeo = md_getgeo, - .media_changed = md_media_changed, - .revalidate_disk= md_revalidate, }; static int md_thread(void * arg) @@ -4941,15 +5024,6 @@ static int md_seq_open(struct inode *inode, struct file *file) return error; } -static int md_seq_release(struct inode *inode, struct file *file) -{ - struct seq_file *m = file->private_data; - struct mdstat_info *mi = m->private; - m->private = NULL; - kfree(mi); - return seq_release(inode, file); -} - static unsigned int mdstat_poll(struct file *filp, poll_table *wait) { struct seq_file *m = filp->private_data; @@ -4971,7 +5045,7 @@ static const struct file_operations md_seq_fops = { .open = md_seq_open, .read = seq_read, .llseek = seq_lseek, - .release = md_seq_release, + .release = seq_release_private, .poll = mdstat_poll, }; diff --git a/drivers/md/raid1.c b/drivers/md/raid1.c index 97ee870b265d..1b7130cad21f 100644 --- a/drivers/md/raid1.c +++ b/drivers/md/raid1.c @@ -2063,7 +2063,6 @@ static int raid1_resize(mddev_t *mddev, sector_t sectors) */ mddev->array_size = sectors>>1; set_capacity(mddev->gendisk, mddev->array_size << 1); - mddev->changed = 1; if (mddev->array_size > mddev->size && mddev->recovery_cp == MaxSector) { mddev->recovery_cp = mddev->size << 1; set_bit(MD_RECOVERY_NEEDED, &mddev->recovery); diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c index 8d59914f2057..a72e70ad0975 100644 --- a/drivers/md/raid5.c +++ b/drivers/md/raid5.c @@ -353,8 +353,8 @@ static int grow_stripes(raid5_conf_t *conf, int num) struct kmem_cache *sc; int devs = conf->raid_disks; - sprintf(conf->cache_name[0], "raid5/%s", mdname(conf->mddev)); - sprintf(conf->cache_name[1], "raid5/%s-alt", mdname(conf->mddev)); + sprintf(conf->cache_name[0], "raid5-%s", mdname(conf->mddev)); + sprintf(conf->cache_name[1], "raid5-%s-alt", mdname(conf->mddev)); conf->active_name = 0; sc = kmem_cache_create(conf->cache_name[conf->active_name], sizeof(struct stripe_head)+(devs-1)*sizeof(struct r5dev), @@ -3864,7 +3864,6 @@ static int raid5_resize(mddev_t *mddev, sector_t sectors) sectors &= ~((sector_t)mddev->chunk_size/512 - 1); mddev->array_size = (sectors * (mddev->raid_disks-conf->max_degraded))>>1; set_capacity(mddev->gendisk, mddev->array_size << 1); - mddev->changed = 1; if (sectors/2 > mddev->size && mddev->recovery_cp == MaxSector) { mddev->recovery_cp = mddev->size << 1; set_bit(MD_RECOVERY_NEEDED, &mddev->recovery); @@ -3999,7 +3998,6 @@ static void end_reshape(raid5_conf_t *conf) conf->mddev->array_size = conf->mddev->size * (conf->raid_disks - conf->max_degraded); set_capacity(conf->mddev->gendisk, conf->mddev->array_size << 1); - conf->mddev->changed = 1; bdev = bdget_disk(conf->mddev->gendisk, 0); if (bdev) { diff --git a/drivers/media/dvb/dvb-usb/dvb-usb-remote.c b/drivers/media/dvb/dvb-usb/dvb-usb-remote.c index 68ed3a788083..9200a30dd1b9 100644 --- a/drivers/media/dvb/dvb-usb/dvb-usb-remote.c +++ b/drivers/media/dvb/dvb-usb/dvb-usb-remote.c @@ -3,7 +3,7 @@ * Copyright (C) 2004-6 Patrick Boettcher (patrick.boettcher@desy.de) * see dvb-usb-init.c for copyright information. * - * This file contains functions for initializing the the input-device and for handling remote-control-queries. + * This file contains functions for initializing the input-device and for handling remote-control-queries. */ #include "dvb-usb-common.h" #include <linux/usb/input.h> diff --git a/drivers/media/dvb/frontends/dib7000m.c b/drivers/media/dvb/frontends/dib7000m.c index f5d40aa3d27f..f64546c6aeb5 100644 --- a/drivers/media/dvb/frontends/dib7000m.c +++ b/drivers/media/dvb/frontends/dib7000m.c @@ -266,7 +266,7 @@ static int dib7000m_sad_calib(struct dib7000m_state *state) { /* internal */ -// dib7000m_write_word(state, 928, (3 << 14) | (1 << 12) | (524 << 0)); // sampling clock of the SAD is writting in set_bandwidth +// dib7000m_write_word(state, 928, (3 << 14) | (1 << 12) | (524 << 0)); // sampling clock of the SAD is written in set_bandwidth dib7000m_write_word(state, 929, (0 << 1) | (0 << 0)); dib7000m_write_word(state, 930, 776); // 0.625*3.3 / 4096 diff --git a/drivers/media/dvb/frontends/dib7000p.c b/drivers/media/dvb/frontends/dib7000p.c index 0349a4b5da3f..aece458cfe12 100644 --- a/drivers/media/dvb/frontends/dib7000p.c +++ b/drivers/media/dvb/frontends/dib7000p.c @@ -223,7 +223,7 @@ static int dib7000p_set_bandwidth(struct dvb_frontend *demod, u8 BW_Idx) static int dib7000p_sad_calib(struct dib7000p_state *state) { /* internal */ -// dib7000p_write_word(state, 72, (3 << 14) | (1 << 12) | (524 << 0)); // sampling clock of the SAD is writting in set_bandwidth +// dib7000p_write_word(state, 72, (3 << 14) | (1 << 12) | (524 << 0)); // sampling clock of the SAD is written in set_bandwidth dib7000p_write_word(state, 73, (0 << 1) | (0 << 0)); dib7000p_write_word(state, 74, 776); // 0.625*3.3 / 4096 diff --git a/drivers/media/dvb/frontends/tda10021.c b/drivers/media/dvb/frontends/tda10021.c index 110536843e8e..e725f612a6b7 100644 --- a/drivers/media/dvb/frontends/tda10021.c +++ b/drivers/media/dvb/frontends/tda10021.c @@ -1,6 +1,6 @@ /* TDA10021 - Single Chip Cable Channel Receiver driver module - used on the the Siemens DVB-C cards + used on the Siemens DVB-C cards Copyright (C) 1999 Convergence Integrated Media GmbH <ralph@convergence.de> Copyright (C) 2004 Markus Schulz <msc@antzsystem.de> diff --git a/drivers/media/dvb/frontends/ves1x93.c b/drivers/media/dvb/frontends/ves1x93.c index 54d7b07571b8..23fd0303c91b 100644 --- a/drivers/media/dvb/frontends/ves1x93.c +++ b/drivers/media/dvb/frontends/ves1x93.c @@ -306,7 +306,7 @@ static int ves1x93_read_status(struct dvb_frontend* fe, fe_status_t* status) * The ves1893 sometimes returns sync values that make no sense, * because, e.g., the SIGNAL bit is 0, while some of the higher * bits are 1 (and how can there be a CARRIER w/o a SIGNAL?). - * Tests showed that the the VITERBI and SYNC bits are returned + * Tests showed that the VITERBI and SYNC bits are returned * reliably, while the SIGNAL and CARRIER bits ar sometimes wrong. * If such a case occurs, we read the value again, until we get a * valid value. diff --git a/drivers/media/video/em28xx/em28xx-i2c.c b/drivers/media/video/em28xx/em28xx-i2c.c index 563a8319e608..54ccc6e1f92e 100644 --- a/drivers/media/video/em28xx/em28xx-i2c.c +++ b/drivers/media/video/em28xx/em28xx-i2c.c @@ -70,7 +70,7 @@ static int em2800_i2c_send_max4(struct em28xx *dev, unsigned char addr, ret = dev->em28xx_write_regs(dev, 4 - len, &b2[4 - len], 2 + len); if (ret != 2 + len) { - em28xx_warn("writting to i2c device failed (error=%i)\n", ret); + em28xx_warn("writing to i2c device failed (error=%i)\n", ret); return -EIO; } for (write_timeout = EM2800_I2C_WRITE_TIMEOUT; write_timeout > 0; diff --git a/drivers/media/video/em28xx/em28xx-video.c b/drivers/media/video/em28xx/em28xx-video.c index bec67609500f..2c7b158ce7e1 100644 --- a/drivers/media/video/em28xx/em28xx-video.c +++ b/drivers/media/video/em28xx/em28xx-video.c @@ -1729,7 +1729,7 @@ static int em28xx_usb_probe(struct usb_interface *interface, endpoint = &interface->cur_altsetting->endpoint[1].desc; - /* check if the the device has the iso in endpoint at the correct place */ + /* check if the device has the iso in endpoint at the correct place */ if ((endpoint->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) != USB_ENDPOINT_XFER_ISOC) { em28xx_err(DRIVER_NAME " probing error: endpoint is non-ISO endpoint!\n"); diff --git a/drivers/media/video/pwc/philips.txt b/drivers/media/video/pwc/philips.txt index f5e848410311..f9f3584281d8 100644 --- a/drivers/media/video/pwc/philips.txt +++ b/drivers/media/video/pwc/philips.txt @@ -54,9 +54,9 @@ fps Specifies the desired framerate. Is an integer in the range of 4-30. fbufs - This paramter specifies the number of internal buffers to use for storing + This parameter specifies the number of internal buffers to use for storing frames from the cam. This will help if the process that reads images from - the cam is a bit slow or momentarely busy. However, on slow machines it + the cam is a bit slow or momentarily busy. However, on slow machines it only introduces lag, so choose carefully. The default is 3, which is reasonable. You can set it between 2 and 5. @@ -209,7 +209,7 @@ trace 128 0x80 PWCX debugging Off - For example, to trace the open() & read() fuctions, sum 8 + 4 = 12, + For example, to trace the open() & read() functions, sum 8 + 4 = 12, so you would supply trace=12 during insmod or modprobe. If you want to turn the initialization and probing tracing off, set trace=0. The default value for trace is 35 (0x23). diff --git a/drivers/media/video/usbvideo/vicam.c b/drivers/media/video/usbvideo/vicam.c index 876fd2768242..982b115193f8 100644 --- a/drivers/media/video/usbvideo/vicam.c +++ b/drivers/media/video/usbvideo/vicam.c @@ -28,7 +28,7 @@ * * Portions of this code were also copied from usbvideo.c * - * Special thanks to the the whole team at Sourceforge for help making + * Special thanks to the whole team at Sourceforge for help making * this driver become a reality. Notably: * Andy Armstrong who reverse engineered the color encoding and * Pavel Machek and Chris Cheney who worked on reverse engineering the diff --git a/drivers/message/fusion/lsi/mpi_history.txt b/drivers/message/fusion/lsi/mpi_history.txt index d6b4c607453b..ddc7ae029dd3 100644 --- a/drivers/message/fusion/lsi/mpi_history.txt +++ b/drivers/message/fusion/lsi/mpi_history.txt @@ -571,7 +571,7 @@ mpi_fc.h * 11-02-00 01.01.01 Original release for post 1.0 work * 12-04-00 01.01.02 Added messages for Common Transport Send and * Primitive Send. - * 01-09-01 01.01.03 Modifed some of the new flags to have an MPI prefix + * 01-09-01 01.01.03 Modified some of the new flags to have an MPI prefix * and modified the FcPrimitiveSend flags. * 01-25-01 01.01.04 Move InitiatorIndex in LinkServiceRsp reply to a larger * field. diff --git a/drivers/message/fusion/mptbase.c b/drivers/message/fusion/mptbase.c index 97471af4309c..5021d1a2a1d4 100644 --- a/drivers/message/fusion/mptbase.c +++ b/drivers/message/fusion/mptbase.c @@ -3585,7 +3585,7 @@ initChainBuffers(MPT_ADAPTER *ioc) * index = chain_idx * * Calculate the number of chain buffers needed(plus 1) per I/O - * then multiply the the maximum number of simultaneous cmds + * then multiply the maximum number of simultaneous cmds * * num_sge = num sge in request frame + last chain buffer * scale = num sge per chain buffer if no chain element diff --git a/drivers/mmc/core/core.c b/drivers/mmc/core/core.c index b6c16704aaab..7385acfa1dd9 100644 --- a/drivers/mmc/core/core.c +++ b/drivers/mmc/core/core.c @@ -501,9 +501,9 @@ void mmc_detect_change(struct mmc_host *host, unsigned long delay) { #ifdef CONFIG_MMC_DEBUG unsigned long flags; - spin_lock_irqsave(host->lock, flags); + spin_lock_irqsave(&host->lock, flags); BUG_ON(host->removed); - spin_unlock_irqrestore(host->lock, flags); + spin_unlock_irqrestore(&host->lock, flags); #endif mmc_schedule_delayed_work(&host->detect, delay); diff --git a/drivers/mtd/maps/Kconfig b/drivers/mtd/maps/Kconfig index d990d8141ef5..5fcd8b3631ba 100644 --- a/drivers/mtd/maps/Kconfig +++ b/drivers/mtd/maps/Kconfig @@ -60,7 +60,7 @@ config MTD_PHYSMAP_BANKWIDTH (i.e., run-time calling physmap_configure()). config MTD_PHYSMAP_OF - tristate "Flash device in physical memory map based on OF descirption" + tristate "Flash device in physical memory map based on OF description" depends on PPC_OF && (MTD_CFI || MTD_JEDECPROBE || MTD_ROM) help This provides a 'mapping' driver which allows the NOR Flash and diff --git a/drivers/mtd/maps/nettel.c b/drivers/mtd/maps/nettel.c index 9f53c655af3a..7b96cd02f82b 100644 --- a/drivers/mtd/maps/nettel.c +++ b/drivers/mtd/maps/nettel.c @@ -358,7 +358,7 @@ int __init nettel_init(void) /* Turn other PAR off so the first probe doesn't find it */ *intel1par = 0; - /* Probe for the the size of the first Intel flash */ + /* Probe for the size of the first Intel flash */ nettel_intel_map.size = maxsize; nettel_intel_map.phys = intel0addr; nettel_intel_map.virt = ioremap_nocache(intel0addr, maxsize); diff --git a/drivers/mtd/onenand/onenand_base.c b/drivers/mtd/onenand/onenand_base.c index 000794c6caf5..0537fac8de74 100644 --- a/drivers/mtd/onenand/onenand_base.c +++ b/drivers/mtd/onenand/onenand_base.c @@ -2192,7 +2192,7 @@ static int onenand_check_maf(int manuf) * @param mtd MTD device structure * * OneNAND detection method: - * Compare the the values from command with ones from register + * Compare the values from command with ones from register */ static int onenand_probe(struct mtd_info *mtd) { diff --git a/drivers/net/3c509.c b/drivers/net/3c509.c index 9588da3a30e7..127f60841b10 100644 --- a/drivers/net/3c509.c +++ b/drivers/net/3c509.c @@ -95,8 +95,7 @@ static int max_interrupt_work = 10; #include <asm/io.h> #include <asm/irq.h> -static char versionA[] __initdata = DRV_NAME ".c:" DRV_VERSION " " DRV_RELDATE " becker@scyld.com\n"; -static char versionB[] __initdata = "http://www.scyld.com/network/3c509.html\n"; +static char version[] __initdata = DRV_NAME ".c:" DRV_VERSION " " DRV_RELDATE " becker@scyld.com\n"; #if defined(CONFIG_PM) && (defined(CONFIG_MCA) || defined(CONFIG_EISA)) #define EL3_SUSPEND @@ -360,7 +359,7 @@ static int __init el3_common_init(struct net_device *dev) printk(", IRQ %d.\n", dev->irq); if (el3_debug > 0) - printk(KERN_INFO "%s" KERN_INFO "%s", versionA, versionB); + printk(KERN_INFO "%s", version); return 0; } diff --git a/drivers/net/3c59x.c b/drivers/net/3c59x.c index 80924f76dee8..f26ca331615e 100644 --- a/drivers/net/3c59x.c +++ b/drivers/net/3c59x.c @@ -103,7 +103,7 @@ static int vortex_debug = 1; static char version[] __devinitdata = -DRV_NAME ": Donald Becker and others. www.scyld.com/network/vortex.html\n"; +DRV_NAME ": Donald Becker and others.\n"; MODULE_AUTHOR("Donald Becker <becker@scyld.com>"); MODULE_DESCRIPTION("3Com 3c59x/3c9xx ethernet driver "); diff --git a/drivers/net/atp.c b/drivers/net/atp.c index 18aba838c1ff..82d78ff8399b 100644 --- a/drivers/net/atp.c +++ b/drivers/net/atp.c @@ -31,10 +31,8 @@ */ -static const char versionA[] = +static const char version[] = "atp.c:v1.09=ac 2002/10/01 Donald Becker <becker@scyld.com>\n"; -static const char versionB[] = -" http://www.scyld.com/network/atp.html\n"; /* The user-configurable values. These may be modified when a driver module is loaded.*/ @@ -324,7 +322,7 @@ static int __init atp_probe1(long ioaddr) #ifndef MODULE if (net_debug) - printk(KERN_INFO "%s" KERN_INFO "%s", versionA, versionB); + printk(KERN_INFO "%s", version); #endif printk(KERN_NOTICE "%s: Pocket adapter found at %#3lx, IRQ %d, SAPROM " @@ -926,7 +924,7 @@ static void set_rx_mode_8012(struct net_device *dev) static int __init atp_init_module(void) { if (debug) /* Emit version even if no cards detected. */ - printk(KERN_INFO "%s" KERN_INFO "%s", versionA, versionB); + printk(KERN_INFO "%s", version); return atp_init(); } diff --git a/drivers/net/bonding/bond_main.c b/drivers/net/bonding/bond_main.c index 724bce51f936..223517dcbcfd 100644 --- a/drivers/net/bonding/bond_main.c +++ b/drivers/net/bonding/bond_main.c @@ -3461,7 +3461,7 @@ void bond_unregister_arp(struct bonding *bond) /*---------------------------- Hashing Policies -----------------------------*/ /* - * Hash for the the output device based upon layer 3 and layer 4 data. If + * Hash for the output device based upon layer 3 and layer 4 data. If * the packet is a frag or not TCP or UDP, just use layer 3 data. If it is * altogether not IP, mimic bond_xmit_hash_policy_l2() */ diff --git a/drivers/net/e1000/e1000_main.c b/drivers/net/e1000/e1000_main.c index 3a03a74c0609..637ae8f68791 100644 --- a/drivers/net/e1000/e1000_main.c +++ b/drivers/net/e1000/e1000_main.c @@ -1214,7 +1214,7 @@ e1000_remove(struct pci_dev *pdev) int i; #endif - flush_scheduled_work(); + cancel_work_sync(&adapter->reset_task); e1000_release_manageability(adapter); diff --git a/drivers/net/eepro.c b/drivers/net/eepro.c index 39654e1e2bed..47680237f783 100644 --- a/drivers/net/eepro.c +++ b/drivers/net/eepro.c @@ -1126,7 +1126,7 @@ static void eepro_tx_timeout (struct net_device *dev) printk (KERN_ERR "%s: transmit timed out, %s?\n", dev->name, "network cable problem"); /* This is not a duplicate. One message for the console, - one for the the log file */ + one for the log file */ printk (KERN_DEBUG "%s: transmit timed out, %s?\n", dev->name, "network cable problem"); eepro_complete_selreset(ioaddr); diff --git a/drivers/net/eepro100.c b/drivers/net/eepro100.c index 6c267c38df97..9800341956a2 100644 --- a/drivers/net/eepro100.c +++ b/drivers/net/eepro100.c @@ -28,7 +28,7 @@ */ static const char * const version = -"eepro100.c:v1.09j-t 9/29/99 Donald Becker http://www.scyld.com/network/eepro100.html\n" +"eepro100.c:v1.09j-t 9/29/99 Donald Becker\n" "eepro100.c: $Revision: 1.36 $ 2000/11/17 Modified by Andrey V. Savochkin <saw@saw.sw.com.sg> and others\n"; /* A few user-configurable values that apply to all boards. diff --git a/drivers/net/epic100.c b/drivers/net/epic100.c index 4e3f14c9c717..5e517946f46a 100644 --- a/drivers/net/epic100.c +++ b/drivers/net/epic100.c @@ -93,8 +93,6 @@ static int rx_copybreak; static char version[] __devinitdata = DRV_NAME ".c:v1.11 1/7/2001 Written by Donald Becker <becker@scyld.com>\n"; static char version2[] __devinitdata = -" http://www.scyld.com/network/epic100.html\n"; -static char version3[] __devinitdata = " (unofficial 2.4.x kernel port, version " DRV_VERSION ", " DRV_RELDATE ")\n"; MODULE_AUTHOR("Donald Becker <becker@scyld.com>"); @@ -323,8 +321,8 @@ static int __devinit epic_init_one (struct pci_dev *pdev, #ifndef MODULE static int printed_version; if (!printed_version++) - printk (KERN_INFO "%s" KERN_INFO "%s" KERN_INFO "%s", - version, version2, version3); + printk (KERN_INFO "%s" KERN_INFO "%s", + version, version2); #endif card_idx++; @@ -1596,8 +1594,8 @@ static int __init epic_init (void) { /* when a module, this is printed whether or not devices are found in probe */ #ifdef MODULE - printk (KERN_INFO "%s" KERN_INFO "%s" KERN_INFO "%s", - version, version2, version3); + printk (KERN_INFO "%s" KERN_INFO "%s", + version, version2); #endif return pci_register_driver(&epic_driver); diff --git a/drivers/net/hamradio/Kconfig b/drivers/net/hamradio/Kconfig index 6e90619b3b41..36d2c7d4f4d0 100644 --- a/drivers/net/hamradio/Kconfig +++ b/drivers/net/hamradio/Kconfig @@ -140,7 +140,7 @@ config BAYCOM_SER_HDX modems that connect to a serial interface. The driver supports the ser12 design in half-duplex mode. This is the old driver. It is still provided in case your serial interface chip does not work with - the full-duplex driver. This driver is depreciated. To configure + the full-duplex driver. This driver is deprecated. To configure the driver, use the sethdlc utility available in the standard ax25 utilities package. For information on the modems, see <http://www.baycom.de/> and diff --git a/drivers/net/irda/donauboe.h b/drivers/net/irda/donauboe.h index 2ab173d9a0e4..1e67720f1066 100644 --- a/drivers/net/irda/donauboe.h +++ b/drivers/net/irda/donauboe.h @@ -113,7 +113,7 @@ /* RxOver overflow in Recv FIFO */ /* SipRcv received serial gap (or other condition you set) */ /* Interrupts are enabled by writing a one to the IER register */ -/* Interrupts are cleared by writting a one to the ISR register */ +/* Interrupts are cleared by writing a one to the ISR register */ /* */ /* 6. The remaining registers: 0x6 and 0x3 appear to be */ /* reserved parts of 16 or 32 bit registersthe remainder */ diff --git a/drivers/net/ixgb/ixgb_ee.c b/drivers/net/ixgb/ixgb_ee.c index f15aebde7b90..52c99d01d568 100644 --- a/drivers/net/ixgb/ixgb_ee.c +++ b/drivers/net/ixgb/ixgb_ee.c @@ -315,7 +315,7 @@ ixgb_wait_eeprom_command(struct ixgb_hw *hw) * hw - Struct containing variables accessed by shared code * * Reads the first 64 16 bit words of the EEPROM and sums the values read. - * If the the sum of the 64 16 bit words is 0xBABA, the EEPROM's checksum is + * If the sum of the 64 16 bit words is 0xBABA, the EEPROM's checksum is * valid. * * Returns: diff --git a/drivers/net/meth.h b/drivers/net/meth.h index 84960dae2a22..ea3b8fc86d1e 100644 --- a/drivers/net/meth.h +++ b/drivers/net/meth.h @@ -126,7 +126,7 @@ typedef struct rx_packet { /* Note: when loopback is set this bit becomes collision control. Setting this bit will */ /* cause a collision to be reported. */ - /* Bits 5 and 6 are used to determine the the Destination address filter mode */ + /* Bits 5 and 6 are used to determine the Destination address filter mode */ #define METH_ACCEPT_MY 0 /* 00: Accept PHY address only */ #define METH_ACCEPT_MCAST 0x20 /* 01: Accept physical, broadcast, and multicast filter matches only */ #define METH_ACCEPT_AMCAST 0x40 /* 10: Accept physical, broadcast, and all multicast packets */ diff --git a/drivers/net/natsemi.c b/drivers/net/natsemi.c index 223e0e6264ba..4cf0d3fcb519 100644 --- a/drivers/net/natsemi.c +++ b/drivers/net/natsemi.c @@ -131,7 +131,6 @@ static const char version[] __devinitdata = KERN_INFO DRV_NAME " dp8381x driver, version " DRV_VERSION ", " DRV_RELDATE "\n" KERN_INFO " originally by Donald Becker <becker@scyld.com>\n" - KERN_INFO " http://www.scyld.com/network/natsemi.html\n" KERN_INFO " 2.4.x kernel port by Jeff Garzik, Tjeerd Mulder\n"; MODULE_AUTHOR("Donald Becker <becker@scyld.com>"); diff --git a/drivers/net/ne2k-pci.c b/drivers/net/ne2k-pci.c index 589785d1e762..995c0a5d4066 100644 --- a/drivers/net/ne2k-pci.c +++ b/drivers/net/ne2k-pci.c @@ -63,8 +63,7 @@ static int options[MAX_UNITS]; /* These identify the driver base version and may not be removed. */ static char version[] __devinitdata = -KERN_INFO DRV_NAME ".c:v" DRV_VERSION " " DRV_RELDATE " D. Becker/P. Gortmaker\n" -KERN_INFO " http://www.scyld.com/network/ne2k-pci.html\n"; +KERN_INFO DRV_NAME ".c:v" DRV_VERSION " " DRV_RELDATE " D. Becker/P. Gortmaker\n"; #if defined(__powerpc__) #define inl_le(addr) le32_to_cpu(inl(addr)) diff --git a/drivers/net/phy/phy.c b/drivers/net/phy/phy.c index eed433d6056a..f71dab347667 100644 --- a/drivers/net/phy/phy.c +++ b/drivers/net/phy/phy.c @@ -662,10 +662,10 @@ int phy_stop_interrupts(struct phy_device *phydev) phy_error(phydev); /* - * Finish any pending work; we might have been scheduled - * to be called from keventd ourselves, though. + * Finish any pending work; we might have been scheduled to be called + * from keventd ourselves, but cancel_work_sync() handles that. */ - run_scheduled_work(&phydev->phy_queue); + cancel_work_sync(&phydev->phy_queue); free_irq(phydev->irq, phydev); diff --git a/drivers/net/sundance.c b/drivers/net/sundance.c index f51ba31970aa..e1f912d04043 100644 --- a/drivers/net/sundance.c +++ b/drivers/net/sundance.c @@ -110,8 +110,7 @@ static char *media[MAX_UNITS]; /* These identify the driver base version and may not be removed. */ static char version[] = -KERN_INFO DRV_NAME ".c:v" DRV_VERSION " " DRV_RELDATE " Written by Donald Becker\n" -KERN_INFO " http://www.scyld.com/network/sundance.html\n"; +KERN_INFO DRV_NAME ".c:v" DRV_VERSION " " DRV_RELDATE " Written by Donald Becker\n"; MODULE_AUTHOR("Donald Becker <becker@scyld.com>"); MODULE_DESCRIPTION("Sundance Alta Ethernet driver"); diff --git a/drivers/net/tg3.c b/drivers/net/tg3.c index e5e901ecd808..923b9c725cc3 100644 --- a/drivers/net/tg3.c +++ b/drivers/net/tg3.c @@ -3716,10 +3716,8 @@ static void tg3_reset_task(struct work_struct *work) unsigned int restart_timer; tg3_full_lock(tp, 0); - tp->tg3_flags |= TG3_FLAG_IN_RESET_TASK; if (!netif_running(tp->dev)) { - tp->tg3_flags &= ~TG3_FLAG_IN_RESET_TASK; tg3_full_unlock(tp); return; } @@ -3750,8 +3748,6 @@ static void tg3_reset_task(struct work_struct *work) mod_timer(&tp->timer, jiffies + 1); out: - tp->tg3_flags &= ~TG3_FLAG_IN_RESET_TASK; - tg3_full_unlock(tp); } @@ -7390,12 +7386,7 @@ static int tg3_close(struct net_device *dev) { struct tg3 *tp = netdev_priv(dev); - /* Calling flush_scheduled_work() may deadlock because - * linkwatch_event() may be on the workqueue and it will try to get - * the rtnl_lock which we are holding. - */ - while (tp->tg3_flags & TG3_FLAG_IN_RESET_TASK) - msleep(1); + cancel_work_sync(&tp->reset_task); netif_stop_queue(dev); diff --git a/drivers/net/tg3.h b/drivers/net/tg3.h index 4d334cf5a243..bd9f4f428e5b 100644 --- a/drivers/net/tg3.h +++ b/drivers/net/tg3.h @@ -2228,7 +2228,7 @@ struct tg3 { #define TG3_FLAG_JUMBO_RING_ENABLE 0x00800000 #define TG3_FLAG_10_100_ONLY 0x01000000 #define TG3_FLAG_PAUSE_AUTONEG 0x02000000 -#define TG3_FLAG_IN_RESET_TASK 0x04000000 + #define TG3_FLAG_40BIT_DMA_BUG 0x08000000 #define TG3_FLAG_BROKEN_CHECKSUMS 0x10000000 #define TG3_FLAG_SUPPORT_MSI 0x20000000 diff --git a/drivers/net/tulip/interrupt.c b/drivers/net/tulip/interrupt.c index 9b08afbd1f65..ea896777bcaf 100644 --- a/drivers/net/tulip/interrupt.c +++ b/drivers/net/tulip/interrupt.c @@ -269,7 +269,7 @@ done: This would turn on IM for devices that is not contributing to backlog congestion with unnecessary latency. - We monitor the the device RX-ring and have: + We monitor the device RX-ring and have: HW Interrupt Mitigation either ON or OFF. diff --git a/drivers/net/tulip/winbond-840.c b/drivers/net/tulip/winbond-840.c index fa440706fb4a..38f3b99716b8 100644 --- a/drivers/net/tulip/winbond-840.c +++ b/drivers/net/tulip/winbond-840.c @@ -1021,7 +1021,7 @@ static int start_tx(struct sk_buff *skb, struct net_device *dev) np->tx_ring[entry].length |= DescEndRing; /* Now acquire the irq spinlock. - * The difficult race is the the ordering between + * The difficult race is the ordering between * increasing np->cur_tx and setting DescOwned: * - if np->cur_tx is increased first the interrupt * handler could consider the packet as transmitted diff --git a/drivers/net/tulip/xircom_cb.c b/drivers/net/tulip/xircom_cb.c index 985a1810ca59..2470b1ee33c0 100644 --- a/drivers/net/tulip/xircom_cb.c +++ b/drivers/net/tulip/xircom_cb.c @@ -1043,7 +1043,7 @@ static int enable_promisc(struct xircom_private *card) /* -link_status() checks the the links status and will return 0 for no link, 10 for 10mbit link and 100 for.. guess what. +link_status() checks the links status and will return 0 for no link, 10 for 10mbit link and 100 for.. guess what. Must be called in locked state with interrupts disabled */ diff --git a/drivers/net/typhoon.c b/drivers/net/typhoon.c index f2dd7763cd0b..f72573594121 100644 --- a/drivers/net/typhoon.c +++ b/drivers/net/typhoon.c @@ -639,7 +639,7 @@ typhoon_issue_command(struct typhoon *tp, int num_cmd, struct cmd_desc *cmd, typhoon_inc_cmd_index(&ring->lastWrite, num_cmd); - /* "I feel a presence... another warrior is on the the mesa." + /* "I feel a presence... another warrior is on the mesa." */ wmb(); iowrite32(ring->lastWrite, tp->ioaddr + TYPHOON_REG_CMD_READY); diff --git a/drivers/net/wireless/airport.c b/drivers/net/wireless/airport.c index 38fac3bbcd82..7d5b8c2cc614 100644 --- a/drivers/net/wireless/airport.c +++ b/drivers/net/wireless/airport.c @@ -149,7 +149,7 @@ static int airport_hard_reset(struct orinoco_private *priv) /* Vitally important. If we don't do this it seems we get an * interrupt somewhere during the power cycle, since * hw_unavailable is already set it doesn't get ACKed, we get - * into an interrupt loop and the the PMU decides to turn us + * into an interrupt loop and the PMU decides to turn us * off. */ disable_irq(dev->irq); diff --git a/drivers/net/wireless/prism54/isl_ioctl.c b/drivers/net/wireless/prism54/isl_ioctl.c index 841b3c136ad9..283be4a70524 100644 --- a/drivers/net/wireless/prism54/isl_ioctl.c +++ b/drivers/net/wireless/prism54/isl_ioctl.c @@ -3054,7 +3054,7 @@ static const iw_handler prism54_handler[] = { (iw_handler) prism54_set_wap, /* SIOCSIWAP */ (iw_handler) prism54_get_wap, /* SIOCGIWAP */ (iw_handler) NULL, /* -- hole -- */ - (iw_handler) NULL, /* SIOCGIWAPLIST depreciated */ + (iw_handler) NULL, /* SIOCGIWAPLIST deprecated */ (iw_handler) prism54_set_scan, /* SIOCSIWSCAN */ (iw_handler) prism54_get_scan, /* SIOCGIWSCAN */ (iw_handler) prism54_set_essid, /* SIOCSIWESSID */ diff --git a/drivers/net/wireless/prism54/islpci_dev.c b/drivers/net/wireless/prism54/islpci_dev.c index a037b11dac9d..084795355b74 100644 --- a/drivers/net/wireless/prism54/islpci_dev.c +++ b/drivers/net/wireless/prism54/islpci_dev.c @@ -115,7 +115,7 @@ isl_upload_firmware(islpci_private *priv) ISL38XX_MEMORY_WINDOW_SIZE : fw_len; u32 __iomem *dev_fw_ptr = device_base + ISL38XX_DIRECT_MEM_WIN; - /* set the cards base address for writting the data */ + /* set the card's base address for writing the data */ isl38xx_w32_flush(device_base, reg, ISL38XX_DIR_MEM_BASE_REG); wmb(); /* be paranoid */ diff --git a/drivers/net/wireless/wavelan_cs.c b/drivers/net/wireless/wavelan_cs.c index 67b867f837ca..5740d4d4267c 100644 --- a/drivers/net/wireless/wavelan_cs.c +++ b/drivers/net/wireless/wavelan_cs.c @@ -176,7 +176,7 @@ psa_write(struct net_device * dev, volatile u_char __iomem *verify = lp->mem + PSA_ADDR + (psaoff(0, psa_comp_number) << 1); - /* Authorize writting to PSA */ + /* Authorize writing to PSA */ hacr_write(base, HACR_PWR_STAT | HACR_ROM_WEN); while(n-- > 0) @@ -1676,7 +1676,7 @@ wv_set_frequency(u_long base, /* i/o port of the card */ fee_write(base, 0x60, dac, 2); - /* We now should verify here that the EEprom writting was ok */ + /* We now should verify here that the EEprom writing was ok */ /* ReRead the first area */ fee_read(base, 0x00, diff --git a/drivers/net/wireless/wavelan_cs.p.h b/drivers/net/wireless/wavelan_cs.p.h index 4d1c4905c749..4b9de0093a7b 100644 --- a/drivers/net/wireless/wavelan_cs.p.h +++ b/drivers/net/wireless/wavelan_cs.p.h @@ -120,7 +120,7 @@ * the Wavelan itself (NCR -> AT&T -> Lucent). * * All started with Anders Klemets <klemets@paul.rutgers.edu>, - * writting a Wavelan ISA driver for the MACH microkernel. Girish + * writing a Wavelan ISA driver for the MACH microkernel. Girish * Welling <welling@paul.rutgers.edu> had also worked on it. * Keith Moore modify this for the Pcmcia hardware. * diff --git a/drivers/net/yellowfin.c b/drivers/net/yellowfin.c index 3f4a7cf9efea..f2a90a7fa2d6 100644 --- a/drivers/net/yellowfin.c +++ b/drivers/net/yellowfin.c @@ -109,7 +109,6 @@ static int gx_fix; /* These identify the driver base version and may not be removed. */ static char version[] __devinitdata = KERN_INFO DRV_NAME ".c:v1.05 1/09/2001 Written by Donald Becker <becker@scyld.com>\n" -KERN_INFO " http://www.scyld.com/network/yellowfin.html\n" KERN_INFO " (unofficial 2.4.x port, " DRV_VERSION ", " DRV_RELDATE ")\n"; MODULE_AUTHOR("Donald Becker <becker@scyld.com>"); diff --git a/drivers/pci/pci-driver.c b/drivers/pci/pci-driver.c index 3bb7739d26a5..8e58ea3d95c0 100644 --- a/drivers/pci/pci-driver.c +++ b/drivers/pci/pci-driver.c @@ -119,7 +119,7 @@ static inline int pci_create_newid_file(struct pci_driver *drv) * system is in its list of supported devices. Returns the matching * pci_device_id structure or %NULL if there is no match. * - * Depreciated, don't use this as it will not catch any dynamic ids + * Deprecated, don't use this as it will not catch any dynamic ids * that a driver might want to check for. */ const struct pci_device_id *pci_match_id(const struct pci_device_id *ids, diff --git a/drivers/rtc/Kconfig b/drivers/rtc/Kconfig index 5e439836db2d..76422eded36e 100644 --- a/drivers/rtc/Kconfig +++ b/drivers/rtc/Kconfig @@ -98,7 +98,7 @@ config RTC_INTF_DEV_UIE_EMUL bool "RTC UIE emulation on dev interface" depends on RTC_INTF_DEV help - Provides an emulation for RTC_UIE if the underlaying rtc chip + Provides an emulation for RTC_UIE if the underlying rtc chip driver does not expose RTC_UIE ioctls. Those requests generate once-per-second update interrupts, used for synchronization. diff --git a/drivers/s390/char/sclp_rw.c b/drivers/s390/char/sclp_rw.c index bbd5b8b66f42..d6b06ab81188 100644 --- a/drivers/s390/char/sclp_rw.c +++ b/drivers/s390/char/sclp_rw.c @@ -23,7 +23,7 @@ /* * The room for the SCCB (only for writing) is not equal to a pages size - * (as it is specified as the maximum size in the the SCLP documentation) + * (as it is specified as the maximum size in the SCLP documentation) * because of the additional data structure described above. */ #define MAX_SCCB_ROOM (PAGE_SIZE - sizeof(struct sclp_buffer)) diff --git a/drivers/s390/net/qeth_main.c b/drivers/s390/net/qeth_main.c index 29d176036e5c..0b96d49dd636 100644 --- a/drivers/s390/net/qeth_main.c +++ b/drivers/s390/net/qeth_main.c @@ -2860,7 +2860,7 @@ qeth_flush_buffers(struct qeth_qdio_out_q *queue, int under_int, if (!atomic_read(&queue->set_pci_flags_count)){ /* * there's no outstanding PCI any more, so we - * have to request a PCI to be sure the the PCI + * have to request a PCI to be sure that the PCI * will wake at some time in the future then we * can flush packed buffers that might still be * hanging around, which can happen if no diff --git a/drivers/s390/scsi/zfcp_qdio.c b/drivers/s390/scsi/zfcp_qdio.c index cb08ca3cc0f9..bdf5782b8a7a 100644 --- a/drivers/s390/scsi/zfcp_qdio.c +++ b/drivers/s390/scsi/zfcp_qdio.c @@ -222,7 +222,7 @@ zfcp_qdio_handler_error_check(struct zfcp_adapter *adapter, unsigned int status, * Since we have been using this adapter, it is save to assume * that it is not failed but recoverable. The card seems to * report link-up events by self-initiated queue shutdown. - * That is why we need to clear the the link-down flag + * That is why we need to clear the link-down flag * which is set again in case we have missed by a mile. */ zfcp_erp_adapter_reopen( diff --git a/drivers/sbus/char/bpp.c b/drivers/sbus/char/bpp.c index 74b999d77bbf..4fab0c23814c 100644 --- a/drivers/sbus/char/bpp.c +++ b/drivers/sbus/char/bpp.c @@ -156,7 +156,7 @@ static unsigned short get_pins(unsigned minor) #define BPP_ICR 0x18 #define BPP_SIZE 0x1A -/* BPP_CSR. Bits of type RW1 are cleared with writting '1'. */ +/* BPP_CSR. Bits of type RW1 are cleared with writing '1'. */ #define P_DEV_ID_MASK 0xf0000000 /* R */ #define P_DEV_ID_ZEBRA 0x40000000 #define P_DEV_ID_L64854 0xa0000000 /* == NCR 89C100+89C105. Pity. */ diff --git a/drivers/scsi/aic7xxx/aic79xx_pci.c b/drivers/scsi/aic7xxx/aic79xx_pci.c index 8d72bbae96ad..0bada0028aa0 100644 --- a/drivers/scsi/aic7xxx/aic79xx_pci.c +++ b/drivers/scsi/aic7xxx/aic79xx_pci.c @@ -966,7 +966,7 @@ ahd_aic790X_setup(struct ahd_softc *ahd) | AHD_BUSFREEREV_BUG; ahd->bugs |= AHD_LQOOVERRUN_BUG|AHD_EARLY_REQ_BUG; - /* If the user requested the the SLOWCRC bit to be set. */ + /* If the user requested that the SLOWCRC bit to be set. */ if (aic79xx_slowcrc) ahd->features |= AHD_AIC79XXB_SLOWCRC; diff --git a/drivers/scsi/aic94xx/Makefile b/drivers/scsi/aic94xx/Makefile index e6b70123940c..e78ce0fa44d2 100644 --- a/drivers/scsi/aic94xx/Makefile +++ b/drivers/scsi/aic94xx/Makefile @@ -6,7 +6,7 @@ # # This file is licensed under GPLv2. # -# This file is part of the the aic94xx driver. +# This file is part of the aic94xx driver. # # The aic94xx driver is free software; you can redistribute it and/or # modify it under the terms of the GNU General Public License as diff --git a/drivers/scsi/dc395x.c b/drivers/scsi/dc395x.c index a965ed3548d5..564ea90ed3a0 100644 --- a/drivers/scsi/dc395x.c +++ b/drivers/scsi/dc395x.c @@ -541,7 +541,7 @@ static struct ParameterData __devinitdata cfg_data[] = { /* - * Safe settings. If set to zero the the BIOS/default values with + * Safe settings. If set to zero the BIOS/default values with * command line overrides will be used. If set to 1 then safe and * slow settings will be used. */ @@ -617,7 +617,7 @@ static void __devinit fix_settings(void) /* * Mapping from the eeprom delay index value (index into this array) - * to the the number of actual seconds that the delay should be for. + * to the number of actual seconds that the delay should be for. */ static char __devinitdata eeprom_index_to_delay_map[] = { 1, 3, 5, 10, 16, 30, 60, 120 }; @@ -4136,7 +4136,7 @@ static void __devinit trms1040_write_all(struct NvRamType *eeprom, unsigned long * @io_port: base I/O address * @addr: offset into SEEPROM * - * Returns the the byte read. + * Returns the byte read. **/ static u8 __devinit trms1040_get_data(unsigned long io_port, u8 addr) { diff --git a/drivers/scsi/scsi_lib.c b/drivers/scsi/scsi_lib.c index 61fbcdcbb009..1f5a07bf2a75 100644 --- a/drivers/scsi/scsi_lib.c +++ b/drivers/scsi/scsi_lib.c @@ -173,7 +173,7 @@ int scsi_queue_insert(struct scsi_cmnd *cmd, int reason) * @retries: number of times to retry request * @flags: or into request flags; * - * returns the req->errors value which is the the scsi_cmnd result + * returns the req->errors value which is the scsi_cmnd result * field. **/ int scsi_execute(struct scsi_device *sdev, const unsigned char *cmd, diff --git a/drivers/spi/atmel_spi.c b/drivers/spi/atmel_spi.c index 66e7bc985797..1d8a2f6bb8eb 100644 --- a/drivers/spi/atmel_spi.c +++ b/drivers/spi/atmel_spi.c @@ -22,10 +22,7 @@ #include <asm/io.h> #include <asm/arch/board.h> #include <asm/arch/gpio.h> - -#ifdef CONFIG_ARCH_AT91 #include <asm/arch/cpu.h> -#endif #include "atmel_spi.h" @@ -552,10 +549,8 @@ static int __init atmel_spi_probe(struct platform_device *pdev) goto out_free_buffer; as->irq = irq; as->clk = clk; -#ifdef CONFIG_ARCH_AT91 if (!cpu_is_at91rm9200()) as->new_1 = 1; -#endif ret = request_irq(irq, atmel_spi_interrupt, 0, pdev->dev.bus_id, master); diff --git a/drivers/usb/atm/usbatm.c b/drivers/usb/atm/usbatm.c index b082d95bbbaa..11e9b15ca45a 100644 --- a/drivers/usb/atm/usbatm.c +++ b/drivers/usb/atm/usbatm.c @@ -1033,7 +1033,7 @@ static int usbatm_do_heavy_init(void *arg) static int usbatm_heavy_init(struct usbatm_data *instance) { - int ret = kernel_thread(usbatm_do_heavy_init, instance, CLONE_KERNEL); + int ret = kernel_thread(usbatm_do_heavy_init, instance, CLONE_FS | CLONE_FILES); if (ret < 0) { usb_err(instance, "%s: failed to create kernel_thread (%d)!\n", __func__, ret); diff --git a/drivers/usb/misc/auerswald.c b/drivers/usb/misc/auerswald.c index b5332e679c46..88fb56d5db8f 100644 --- a/drivers/usb/misc/auerswald.c +++ b/drivers/usb/misc/auerswald.c @@ -1307,7 +1307,7 @@ static int auerswald_addservice (pauerswald_t cp, pauerscon_t scp) } -/* remove a service from the the device +/* remove a service from the device scp->id must be set! */ static void auerswald_removeservice (pauerswald_t cp, pauerscon_t scp) { diff --git a/drivers/usb/net/usbnet.h b/drivers/usb/net/usbnet.h index cbb53e065d6c..82db5a8e528e 100644 --- a/drivers/usb/net/usbnet.h +++ b/drivers/usb/net/usbnet.h @@ -129,7 +129,7 @@ extern void usbnet_disconnect(struct usb_interface *); /* Drivers that reuse some of the standard USB CDC infrastructure - * (notably, using multiple interfaces according to the the CDC + * (notably, using multiple interfaces according to the CDC * union descriptor) get some helper code. */ struct cdc_state { diff --git a/drivers/usb/serial/Kconfig b/drivers/usb/serial/Kconfig index ba5d1dc03036..3efe67092f15 100644 --- a/drivers/usb/serial/Kconfig +++ b/drivers/usb/serial/Kconfig @@ -558,7 +558,7 @@ config USB_SERIAL_DEBUG tristate "USB Debugging Device" depends on USB_SERIAL help - Say Y here if you have a USB debugging device used to recieve + Say Y here if you have a USB debugging device used to receive debugging data from another machine. The most common of these devices is the NetChip TurboCONNECT device. diff --git a/drivers/usb/serial/aircable.c b/drivers/usb/serial/aircable.c index b675735bfbee..fbc8c27d5d99 100644 --- a/drivers/usb/serial/aircable.c +++ b/drivers/usb/serial/aircable.c @@ -9,7 +9,7 @@ * The device works as an standard CDC device, it has 2 interfaces, the first * one is for firmware access and the second is the serial one. * The protocol is very simply, there are two posibilities reading or writing. - * When writting the first urb must have a Header that starts with 0x20 0x29 the + * When writing the first urb must have a Header that starts with 0x20 0x29 the * next two bytes must say how much data will be sended. * When reading the process is almost equal except that the header starts with * 0x00 0x20. @@ -18,7 +18,7 @@ * buffer: The First and Second byte is used for a Header, the Third and Fourth * tells the device the amount of information the package holds. * Packages are 60 bytes long Header Stuff. - * When writting to the device the first two bytes of the header are 0x20 0x29 + * When writing to the device the first two bytes of the header are 0x20 0x29 * When reading the bytes are 0x00 0x20, or 0x00 0x10, there is an strange * situation, when too much data arrives to the device because it sends the data * but with out the header. I will use a simply hack to override this situation, diff --git a/drivers/usb/serial/io_edgeport.c b/drivers/usb/serial/io_edgeport.c index 18f74ac76565..4807f960150b 100644 --- a/drivers/usb/serial/io_edgeport.c +++ b/drivers/usb/serial/io_edgeport.c @@ -2465,7 +2465,7 @@ static int send_cmd_write_uart_register (struct edgeport_port *edge_port, __u8 r ((edge_serial->is_epic) && (!edge_serial->epic_descriptor.Supports.IOSPWriteMCR) && (regNum == MCR))) { - dbg("SendCmdWriteUartReg - Not writting to MCR Register"); + dbg("SendCmdWriteUartReg - Not writing to MCR Register"); return 0; } @@ -2473,7 +2473,7 @@ static int send_cmd_write_uart_register (struct edgeport_port *edge_port, __u8 r ((edge_serial->is_epic) && (!edge_serial->epic_descriptor.Supports.IOSPWriteLCR) && (regNum == LCR))) { - dbg ("SendCmdWriteUartReg - Not writting to LCR Register"); + dbg ("SendCmdWriteUartReg - Not writing to LCR Register"); return 0; } diff --git a/drivers/video/Kconfig b/drivers/video/Kconfig index 1132ba5ff391..9a256d2ff9dc 100644 --- a/drivers/video/Kconfig +++ b/drivers/video/Kconfig @@ -1348,6 +1348,20 @@ config FB_VOODOO1 Please read the <file:Documentation/fb/README-sstfb.txt> for supported options and other important info support. +config FB_VT8623 + tristate "VIA VT8623 support" + depends on FB && PCI + select FB_CFB_FILLRECT + select FB_CFB_COPYAREA + select FB_CFB_IMAGEBLIT + select FB_TILEBLITTING + select FB_SVGALIB + select VGASTATE + select FONT_8x16 if FRAMEBUFFER_CONSOLE + ---help--- + Driver for CastleRock integrated graphics core in the + VIA VT8623 [Apollo CLE266] chipset. + config FB_CYBLA tristate "Cyberblade/i1 support" depends on FB && PCI && X86_32 && !64BIT @@ -1401,6 +1415,20 @@ config FB_TRIDENT_ACCEL This will compile the Trident frame buffer device with acceleration functions. +config FB_ARK + tristate "ARK 2000PV support" + depends on FB && PCI + select FB_CFB_FILLRECT + select FB_CFB_COPYAREA + select FB_CFB_IMAGEBLIT + select FB_TILEBLITTING + select FB_SVGALIB + select VGASTATE + select FONT_8x16 if FRAMEBUFFER_CONSOLE + ---help--- + Driver for PCI graphics boards with ARK 2000PV chip + and ICS 5342 RAMDAC. + config FB_PM3 tristate "Permedia3 support" depends on FB && PCI && BROKEN diff --git a/drivers/video/Makefile b/drivers/video/Makefile index a916c204274f..0b70567458fb 100644 --- a/drivers/video/Makefile +++ b/drivers/video/Makefile @@ -54,10 +54,12 @@ obj-$(CONFIG_FB_VALKYRIE) += valkyriefb.o obj-$(CONFIG_FB_CT65550) += chipsfb.o obj-$(CONFIG_FB_IMSTT) += imsttfb.o obj-$(CONFIG_FB_FM2) += fm2fb.o +obj-$(CONFIG_FB_VT8623) += vt8623fb.o obj-$(CONFIG_FB_CYBLA) += cyblafb.o obj-$(CONFIG_FB_TRIDENT) += tridentfb.o obj-$(CONFIG_FB_LE80578) += vermilion/ obj-$(CONFIG_FB_S3) += s3fb.o +obj-$(CONFIG_FB_ARK) += arkfb.o obj-$(CONFIG_FB_STI) += stifb.o obj-$(CONFIG_FB_FFB) += ffb.o sbuslib.o obj-$(CONFIG_FB_CG6) += cg6.o sbuslib.o diff --git a/drivers/video/arkfb.c b/drivers/video/arkfb.c new file mode 100644 index 000000000000..ba6fede5c466 --- /dev/null +++ b/drivers/video/arkfb.c @@ -0,0 +1,1200 @@ +/* + * linux/drivers/video/arkfb.c -- Frame buffer device driver for ARK 2000PV + * with ICS 5342 dac (it is easy to add support for different dacs). + * + * Copyright (c) 2007 Ondrej Zajicek <santiago@crfreenet.org> + * + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file COPYING in the main directory of this archive for + * more details. + * + * Code is based on s3fb + */ + +#include <linux/version.h> +#include <linux/module.h> +#include <linux/kernel.h> +#include <linux/errno.h> +#include <linux/string.h> +#include <linux/mm.h> +#include <linux/tty.h> +#include <linux/slab.h> +#include <linux/delay.h> +#include <linux/fb.h> +#include <linux/svga.h> +#include <linux/init.h> +#include <linux/pci.h> +#include <linux/console.h> /* Why should fb driver call console functions? because acquire_console_sem() */ +#include <video/vga.h> + +#ifdef CONFIG_MTRR +#include <asm/mtrr.h> +#endif + +struct arkfb_info { + int mclk_freq; + int mtrr_reg; + + struct dac_info *dac; + struct vgastate state; + struct mutex open_lock; + unsigned int ref_count; + u32 pseudo_palette[16]; +}; + + +/* ------------------------------------------------------------------------- */ + + +static const struct svga_fb_format arkfb_formats[] = { + { 0, {0, 6, 0}, {0, 6, 0}, {0, 6, 0}, {0, 0, 0}, 0, + FB_TYPE_TEXT, FB_AUX_TEXT_SVGA_STEP4, FB_VISUAL_PSEUDOCOLOR, 8, 8}, + { 4, {0, 6, 0}, {0, 6, 0}, {0, 6, 0}, {0, 0, 0}, 0, + FB_TYPE_PACKED_PIXELS, 0, FB_VISUAL_PSEUDOCOLOR, 8, 16}, + { 4, {0, 6, 0}, {0, 6, 0}, {0, 6, 0}, {0, 0, 0}, 1, + FB_TYPE_INTERLEAVED_PLANES, 1, FB_VISUAL_PSEUDOCOLOR, 8, 16}, + { 8, {0, 6, 0}, {0, 6, 0}, {0, 6, 0}, {0, 0, 0}, 0, + FB_TYPE_PACKED_PIXELS, 0, FB_VISUAL_PSEUDOCOLOR, 8, 8}, + {16, {10, 5, 0}, {5, 5, 0}, {0, 5, 0}, {0, 0, 0}, 0, + FB_TYPE_PACKED_PIXELS, 0, FB_VISUAL_TRUECOLOR, 4, 4}, + {16, {11, 5, 0}, {5, 6, 0}, {0, 5, 0}, {0, 0, 0}, 0, + FB_TYPE_PACKED_PIXELS, 0, FB_VISUAL_TRUECOLOR, 4, 4}, + {24, {16, 8, 0}, {8, 8, 0}, {0, 8, 0}, {0, 0, 0}, 0, + FB_TYPE_PACKED_PIXELS, 0, FB_VISUAL_TRUECOLOR, 8, 8}, + {32, {16, 8, 0}, {8, 8, 0}, {0, 8, 0}, {0, 0, 0}, 0, + FB_TYPE_PACKED_PIXELS, 0, FB_VISUAL_TRUECOLOR, 2, 2}, + SVGA_FORMAT_END +}; + + +/* CRT timing register sets */ + +static const struct vga_regset ark_h_total_regs[] = {{0x00, 0, 7}, {0x41, 7, 7}, VGA_REGSET_END}; +static const struct vga_regset ark_h_display_regs[] = {{0x01, 0, 7}, {0x41, 6, 6}, VGA_REGSET_END}; +static const struct vga_regset ark_h_blank_start_regs[] = {{0x02, 0, 7}, {0x41, 5, 5}, VGA_REGSET_END}; +static const struct vga_regset ark_h_blank_end_regs[] = {{0x03, 0, 4}, {0x05, 7, 7 }, VGA_REGSET_END}; +static const struct vga_regset ark_h_sync_start_regs[] = {{0x04, 0, 7}, {0x41, 4, 4}, VGA_REGSET_END}; +static const struct vga_regset ark_h_sync_end_regs[] = {{0x05, 0, 4}, VGA_REGSET_END}; + +static const struct vga_regset ark_v_total_regs[] = {{0x06, 0, 7}, {0x07, 0, 0}, {0x07, 5, 5}, {0x40, 7, 7}, VGA_REGSET_END}; +static const struct vga_regset ark_v_display_regs[] = {{0x12, 0, 7}, {0x07, 1, 1}, {0x07, 6, 6}, {0x40, 6, 6}, VGA_REGSET_END}; +static const struct vga_regset ark_v_blank_start_regs[] = {{0x15, 0, 7}, {0x07, 3, 3}, {0x09, 5, 5}, {0x40, 5, 5}, VGA_REGSET_END}; +// const struct vga_regset ark_v_blank_end_regs[] = {{0x16, 0, 6}, VGA_REGSET_END}; +static const struct vga_regset ark_v_blank_end_regs[] = {{0x16, 0, 7}, VGA_REGSET_END}; +static const struct vga_regset ark_v_sync_start_regs[] = {{0x10, 0, 7}, {0x07, 2, 2}, {0x07, 7, 7}, {0x40, 4, 4}, VGA_REGSET_END}; +static const struct vga_regset ark_v_sync_end_regs[] = {{0x11, 0, 3}, VGA_REGSET_END}; + +static const struct vga_regset ark_line_compare_regs[] = {{0x18, 0, 7}, {0x07, 4, 4}, {0x09, 6, 6}, VGA_REGSET_END}; +static const struct vga_regset ark_start_address_regs[] = {{0x0d, 0, 7}, {0x0c, 0, 7}, {0x40, 0, 2}, VGA_REGSET_END}; +static const struct vga_regset ark_offset_regs[] = {{0x13, 0, 7}, {0x41, 3, 3}, VGA_REGSET_END}; + +static const struct svga_timing_regs ark_timing_regs = { + ark_h_total_regs, ark_h_display_regs, ark_h_blank_start_regs, + ark_h_blank_end_regs, ark_h_sync_start_regs, ark_h_sync_end_regs, + ark_v_total_regs, ark_v_display_regs, ark_v_blank_start_regs, + ark_v_blank_end_regs, ark_v_sync_start_regs, ark_v_sync_end_regs, +}; + + +/* ------------------------------------------------------------------------- */ + + +/* Module parameters */ + +static char *mode = "640x480-8@60"; + +#ifdef CONFIG_MTRR +static int mtrr = 1; +#endif + +MODULE_AUTHOR("(c) 2007 Ondrej Zajicek <santiago@crfreenet.org>"); +MODULE_LICENSE("GPL"); +MODULE_DESCRIPTION("fbdev driver for ARK 2000PV"); + +module_param(mode, charp, 0444); +MODULE_PARM_DESC(mode, "Default video mode ('640x480-8@60', etc)"); + +#ifdef CONFIG_MTRR +module_param(mtrr, int, 0444); +MODULE_PARM_DESC(mtrr, "Enable write-combining with MTRR (1=enable, 0=disable, default=1)"); +#endif + +static int threshold = 4; + +module_param(threshold, int, 0644); +MODULE_PARM_DESC(threshold, "FIFO threshold"); + + +/* ------------------------------------------------------------------------- */ + + +static void arkfb_settile(struct fb_info *info, struct fb_tilemap *map) +{ + const u8 *font = map->data; + u8 __iomem *fb = (u8 __iomem *)info->screen_base; + int i, c; + + if ((map->width != 8) || (map->height != 16) || + (map->depth != 1) || (map->length != 256)) { + printk(KERN_ERR "fb%d: unsupported font parameters: width %d, " + "height %d, depth %d, length %d\n", info->node, + map->width, map->height, map->depth, map->length); + return; + } + + fb += 2; + for (c = 0; c < map->length; c++) { + for (i = 0; i < map->height; i++) { + fb_writeb(font[i], &fb[i * 4]); + fb_writeb(font[i], &fb[i * 4 + (128 * 8)]); + } + fb += 128; + + if ((c % 8) == 7) + fb += 128*8; + + font += map->height; + } +} + +static struct fb_tile_ops arkfb_tile_ops = { + .fb_settile = arkfb_settile, + .fb_tilecopy = svga_tilecopy, + .fb_tilefill = svga_tilefill, + .fb_tileblit = svga_tileblit, + .fb_tilecursor = svga_tilecursor, + .fb_get_tilemax = svga_get_tilemax, +}; + + +/* ------------------------------------------------------------------------- */ + + +/* image data is MSB-first, fb structure is MSB-first too */ +static inline u32 expand_color(u32 c) +{ + return ((c & 1) | ((c & 2) << 7) | ((c & 4) << 14) | ((c & 8) << 21)) * 0xFF; +} + +/* arkfb_iplan_imageblit silently assumes that almost everything is 8-pixel aligned */ +static void arkfb_iplan_imageblit(struct fb_info *info, const struct fb_image *image) +{ + u32 fg = expand_color(image->fg_color); + u32 bg = expand_color(image->bg_color); + const u8 *src1, *src; + u8 __iomem *dst1; + u32 __iomem *dst; + u32 val; + int x, y; + + src1 = image->data; + dst1 = info->screen_base + (image->dy * info->fix.line_length) + + ((image->dx / 8) * 4); + + for (y = 0; y < image->height; y++) { + src = src1; + dst = (u32 __iomem *) dst1; + for (x = 0; x < image->width; x += 8) { + val = *(src++) * 0x01010101; + val = (val & fg) | (~val & bg); + fb_writel(val, dst++); + } + src1 += image->width / 8; + dst1 += info->fix.line_length; + } + +} + +/* arkfb_iplan_fillrect silently assumes that almost everything is 8-pixel aligned */ +static void arkfb_iplan_fillrect(struct fb_info *info, const struct fb_fillrect *rect) +{ + u32 fg = expand_color(rect->color); + u8 __iomem *dst1; + u32 __iomem *dst; + int x, y; + + dst1 = info->screen_base + (rect->dy * info->fix.line_length) + + ((rect->dx / 8) * 4); + + for (y = 0; y < rect->height; y++) { + dst = (u32 __iomem *) dst1; + for (x = 0; x < rect->width; x += 8) { + fb_writel(fg, dst++); + } + dst1 += info->fix.line_length; + } + +} + + +/* image data is MSB-first, fb structure is high-nibble-in-low-byte-first */ +static inline u32 expand_pixel(u32 c) +{ + return (((c & 1) << 24) | ((c & 2) << 27) | ((c & 4) << 14) | ((c & 8) << 17) | + ((c & 16) << 4) | ((c & 32) << 7) | ((c & 64) >> 6) | ((c & 128) >> 3)) * 0xF; +} + +/* arkfb_cfb4_imageblit silently assumes that almost everything is 8-pixel aligned */ +static void arkfb_cfb4_imageblit(struct fb_info *info, const struct fb_image *image) +{ + u32 fg = image->fg_color * 0x11111111; + u32 bg = image->bg_color * 0x11111111; + const u8 *src1, *src; + u8 __iomem *dst1; + u32 __iomem *dst; + u32 val; + int x, y; + + src1 = image->data; + dst1 = info->screen_base + (image->dy * info->fix.line_length) + + ((image->dx / 8) * 4); + + for (y = 0; y < image->height; y++) { + src = src1; + dst = (u32 __iomem *) dst1; + for (x = 0; x < image->width; x += 8) { + val = expand_pixel(*(src++)); + val = (val & fg) | (~val & bg); + fb_writel(val, dst++); + } + src1 += image->width / 8; + dst1 += info->fix.line_length; + } + +} + +static void arkfb_imageblit(struct fb_info *info, const struct fb_image *image) +{ + if ((info->var.bits_per_pixel == 4) && (image->depth == 1) + && ((image->width % 8) == 0) && ((image->dx % 8) == 0)) { + if (info->fix.type == FB_TYPE_INTERLEAVED_PLANES) + arkfb_iplan_imageblit(info, image); + else + arkfb_cfb4_imageblit(info, image); + } else + cfb_imageblit(info, image); +} + +static void arkfb_fillrect(struct fb_info *info, const struct fb_fillrect *rect) +{ + if ((info->var.bits_per_pixel == 4) + && ((rect->width % 8) == 0) && ((rect->dx % 8) == 0) + && (info->fix.type == FB_TYPE_INTERLEAVED_PLANES)) + arkfb_iplan_fillrect(info, rect); + else + cfb_fillrect(info, rect); +} + + +/* ------------------------------------------------------------------------- */ + + +enum +{ + DAC_PSEUDO8_8, + DAC_RGB1555_8, + DAC_RGB0565_8, + DAC_RGB0888_8, + DAC_RGB8888_8, + DAC_PSEUDO8_16, + DAC_RGB1555_16, + DAC_RGB0565_16, + DAC_RGB0888_16, + DAC_RGB8888_16, + DAC_MAX +}; + +struct dac_ops { + int (*dac_get_mode)(struct dac_info *info); + int (*dac_set_mode)(struct dac_info *info, int mode); + int (*dac_get_freq)(struct dac_info *info, int channel); + int (*dac_set_freq)(struct dac_info *info, int channel, u32 freq); + void (*dac_release)(struct dac_info *info); +}; + +typedef void (*dac_read_regs_t)(void *data, u8 *code, int count); +typedef void (*dac_write_regs_t)(void *data, u8 *code, int count); + +struct dac_info +{ + struct dac_ops *dacops; + dac_read_regs_t dac_read_regs; + dac_write_regs_t dac_write_regs; + void *data; +}; + + +static inline u8 dac_read_reg(struct dac_info *info, u8 reg) +{ + u8 code[2] = {reg, 0}; + info->dac_read_regs(info->data, code, 1); + return code[1]; +} + +static inline void dac_read_regs(struct dac_info *info, u8 *code, int count) +{ + info->dac_read_regs(info->data, code, count); +} + +static inline void dac_write_reg(struct dac_info *info, u8 reg, u8 val) +{ + u8 code[2] = {reg, val}; + info->dac_write_regs(info->data, code, 1); +} + +static inline void dac_write_regs(struct dac_info *info, u8 *code, int count) +{ + info->dac_write_regs(info->data, code, count); +} + +static inline int dac_set_mode(struct dac_info *info, int mode) +{ + return info->dacops->dac_set_mode(info, mode); +} + +static inline int dac_set_freq(struct dac_info *info, int channel, u32 freq) +{ + return info->dacops->dac_set_freq(info, channel, freq); +} + +static inline void dac_release(struct dac_info *info) +{ + info->dacops->dac_release(info); +} + + +/* ------------------------------------------------------------------------- */ + + +/* ICS5342 DAC */ + +struct ics5342_info +{ + struct dac_info dac; + u8 mode; +}; + +#define DAC_PAR(info) ((struct ics5342_info *) info) + +/* LSB is set to distinguish unused slots */ +static const u8 ics5342_mode_table[DAC_MAX] = { + [DAC_PSEUDO8_8] = 0x01, [DAC_RGB1555_8] = 0x21, [DAC_RGB0565_8] = 0x61, + [DAC_RGB0888_8] = 0x41, [DAC_PSEUDO8_16] = 0x11, [DAC_RGB1555_16] = 0x31, + [DAC_RGB0565_16] = 0x51, [DAC_RGB0888_16] = 0x91, [DAC_RGB8888_16] = 0x71 +}; + +static int ics5342_set_mode(struct dac_info *info, int mode) +{ + u8 code; + + if (mode >= DAC_MAX) + return -EINVAL; + + code = ics5342_mode_table[mode]; + + if (! code) + return -EINVAL; + + dac_write_reg(info, 6, code & 0xF0); + DAC_PAR(info)->mode = mode; + + return 0; +} + +static const struct svga_pll ics5342_pll = {3, 129, 3, 33, 0, 3, + 60000, 250000, 14318}; + +/* pd4 - allow only posdivider 4 (r=2) */ +static const struct svga_pll ics5342_pll_pd4 = {3, 129, 3, 33, 2, 2, + 60000, 335000, 14318}; + +/* 270 MHz should be upper bound for VCO clock according to specs, + but that is too restrictive in pd4 case */ + +static int ics5342_set_freq(struct dac_info *info, int channel, u32 freq) +{ + u16 m, n, r; + + /* only postdivider 4 (r=2) is valid in mode DAC_PSEUDO8_16 */ + int rv = svga_compute_pll((DAC_PAR(info)->mode == DAC_PSEUDO8_16) + ? &ics5342_pll_pd4 : &ics5342_pll, + freq, &m, &n, &r, 0); + + if (rv < 0) { + return -EINVAL; + } else { + u8 code[6] = {4, 3, 5, m-2, 5, (n-2) | (r << 5)}; + dac_write_regs(info, code, 3); + return 0; + } +} + +static void ics5342_release(struct dac_info *info) +{ + ics5342_set_mode(info, DAC_PSEUDO8_8); + kfree(info); +} + +static struct dac_ops ics5342_ops = { + .dac_set_mode = ics5342_set_mode, + .dac_set_freq = ics5342_set_freq, + .dac_release = ics5342_release +}; + + +static struct dac_info * ics5342_init(dac_read_regs_t drr, dac_write_regs_t dwr, void *data) +{ + struct dac_info *info = kzalloc(sizeof(struct ics5342_info), GFP_KERNEL); + + if (! info) + return NULL; + + info->dacops = &ics5342_ops; + info->dac_read_regs = drr; + info->dac_write_regs = dwr; + info->data = data; + DAC_PAR(info)->mode = DAC_PSEUDO8_8; /* estimation */ + return info; +} + + +/* ------------------------------------------------------------------------- */ + + +static unsigned short dac_regs[4] = {0x3c8, 0x3c9, 0x3c6, 0x3c7}; + +static void ark_dac_read_regs(void *data, u8 *code, int count) +{ + u8 regval = vga_rseq(NULL, 0x1C); + + while (count != 0) + { + vga_wseq(NULL, 0x1C, regval | (code[0] & 4) ? 0x80 : 0); + code[1] = vga_r(NULL, dac_regs[code[0] & 3]); + count--; + code += 2; + } + + vga_wseq(NULL, 0x1C, regval); +} + +static void ark_dac_write_regs(void *data, u8 *code, int count) +{ + u8 regval = vga_rseq(NULL, 0x1C); + + while (count != 0) + { + vga_wseq(NULL, 0x1C, regval | (code[0] & 4) ? 0x80 : 0); + vga_w(NULL, dac_regs[code[0] & 3], code[1]); + count--; + code += 2; + } + + vga_wseq(NULL, 0x1C, regval); +} + + +static void ark_set_pixclock(struct fb_info *info, u32 pixclock) +{ + struct arkfb_info *par = info->par; + u8 regval; + + int rv = dac_set_freq(par->dac, 0, 1000000000 / pixclock); + if (rv < 0) { + printk(KERN_ERR "fb%d: cannot set requested pixclock, keeping old value\n", info->node); + return; + } + + /* Set VGA misc register */ + regval = vga_r(NULL, VGA_MIS_R); + vga_w(NULL, VGA_MIS_W, regval | VGA_MIS_ENB_PLL_LOAD); +} + + +/* Open framebuffer */ + +static int arkfb_open(struct fb_info *info, int user) +{ + struct arkfb_info *par = info->par; + + mutex_lock(&(par->open_lock)); + if (par->ref_count == 0) { + memset(&(par->state), 0, sizeof(struct vgastate)); + par->state.flags = VGA_SAVE_MODE | VGA_SAVE_FONTS | VGA_SAVE_CMAP; + par->state.num_crtc = 0x60; + par->state.num_seq = 0x30; + save_vga(&(par->state)); + } + + par->ref_count++; + mutex_unlock(&(par->open_lock)); + + return 0; +} + +/* Close framebuffer */ + +static int arkfb_release(struct fb_info *info, int user) +{ + struct arkfb_info *par = info->par; + + mutex_lock(&(par->open_lock)); + if (par->ref_count == 0) { + mutex_unlock(&(par->open_lock)); + return -EINVAL; + } + + if (par->ref_count == 1) { + restore_vga(&(par->state)); + dac_set_mode(par->dac, DAC_PSEUDO8_8); + } + + par->ref_count--; + mutex_unlock(&(par->open_lock)); + + return 0; +} + +/* Validate passed in var */ + +static int arkfb_check_var(struct fb_var_screeninfo *var, struct fb_info *info) +{ + int rv, mem, step; + + /* Find appropriate format */ + rv = svga_match_format (arkfb_formats, var, NULL); + if (rv < 0) + { + printk(KERN_ERR "fb%d: unsupported mode requested\n", info->node); + return rv; + } + + /* Do not allow to have real resoulution larger than virtual */ + if (var->xres > var->xres_virtual) + var->xres_virtual = var->xres; + + if (var->yres > var->yres_virtual) + var->yres_virtual = var->yres; + + /* Round up xres_virtual to have proper alignment of lines */ + step = arkfb_formats[rv].xresstep - 1; + var->xres_virtual = (var->xres_virtual+step) & ~step; + + + /* Check whether have enough memory */ + mem = ((var->bits_per_pixel * var->xres_virtual) >> 3) * var->yres_virtual; + if (mem > info->screen_size) + { + printk(KERN_ERR "fb%d: not enough framebuffer memory (%d kB requested , %d kB available)\n", info->node, mem >> 10, (unsigned int) (info->screen_size >> 10)); + return -EINVAL; + } + + rv = svga_check_timings (&ark_timing_regs, var, info->node); + if (rv < 0) + { + printk(KERN_ERR "fb%d: invalid timings requested\n", info->node); + return rv; + } + + /* Interlaced mode is broken */ + if (var->vmode & FB_VMODE_INTERLACED) + return -EINVAL; + + return 0; +} + +/* Set video mode from par */ + +static int arkfb_set_par(struct fb_info *info) +{ + struct arkfb_info *par = info->par; + u32 value, mode, hmul, hdiv, offset_value, screen_size; + u32 bpp = info->var.bits_per_pixel; + u8 regval; + + if (bpp != 0) { + info->fix.ypanstep = 1; + info->fix.line_length = (info->var.xres_virtual * bpp) / 8; + + info->flags &= ~FBINFO_MISC_TILEBLITTING; + info->tileops = NULL; + + /* in 4bpp supports 8p wide tiles only, any tiles otherwise */ + info->pixmap.blit_x = (bpp == 4) ? (1 << (8 - 1)) : (~(u32)0); + info->pixmap.blit_y = ~(u32)0; + + offset_value = (info->var.xres_virtual * bpp) / 64; + screen_size = info->var.yres_virtual * info->fix.line_length; + } else { + info->fix.ypanstep = 16; + info->fix.line_length = 0; + + info->flags |= FBINFO_MISC_TILEBLITTING; + info->tileops = &arkfb_tile_ops; + + /* supports 8x16 tiles only */ + info->pixmap.blit_x = 1 << (8 - 1); + info->pixmap.blit_y = 1 << (16 - 1); + + offset_value = info->var.xres_virtual / 16; + screen_size = (info->var.xres_virtual * info->var.yres_virtual) / 64; + } + + info->var.xoffset = 0; + info->var.yoffset = 0; + info->var.activate = FB_ACTIVATE_NOW; + + /* Unlock registers */ + svga_wcrt_mask(0x11, 0x00, 0x80); + + /* Blank screen and turn off sync */ + svga_wseq_mask(0x01, 0x20, 0x20); + svga_wcrt_mask(0x17, 0x00, 0x80); + + /* Set default values */ + svga_set_default_gfx_regs(); + svga_set_default_atc_regs(); + svga_set_default_seq_regs(); + svga_set_default_crt_regs(); + svga_wcrt_multi(ark_line_compare_regs, 0xFFFFFFFF); + svga_wcrt_multi(ark_start_address_regs, 0); + + /* ARK specific initialization */ + svga_wseq_mask(0x10, 0x1F, 0x1F); /* enable linear framebuffer and full memory access */ + svga_wseq_mask(0x12, 0x03, 0x03); /* 4 MB linear framebuffer size */ + + vga_wseq(NULL, 0x13, info->fix.smem_start >> 16); + vga_wseq(NULL, 0x14, info->fix.smem_start >> 24); + vga_wseq(NULL, 0x15, 0); + vga_wseq(NULL, 0x16, 0); + + /* Set the FIFO threshold register */ + /* It is fascinating way to store 5-bit value in 8-bit register */ + regval = 0x10 | ((threshold & 0x0E) >> 1) | (threshold & 0x01) << 7 | (threshold & 0x10) << 1; + vga_wseq(NULL, 0x18, regval); + + /* Set the offset register */ + pr_debug("fb%d: offset register : %d\n", info->node, offset_value); + svga_wcrt_multi(ark_offset_regs, offset_value); + + /* fix for hi-res textmode */ + svga_wcrt_mask(0x40, 0x08, 0x08); + + if (info->var.vmode & FB_VMODE_DOUBLE) + svga_wcrt_mask(0x09, 0x80, 0x80); + else + svga_wcrt_mask(0x09, 0x00, 0x80); + + if (info->var.vmode & FB_VMODE_INTERLACED) + svga_wcrt_mask(0x44, 0x04, 0x04); + else + svga_wcrt_mask(0x44, 0x00, 0x04); + + hmul = 1; + hdiv = 1; + mode = svga_match_format(arkfb_formats, &(info->var), &(info->fix)); + + /* Set mode-specific register values */ + switch (mode) { + case 0: + pr_debug("fb%d: text mode\n", info->node); + svga_set_textmode_vga_regs(); + + vga_wseq(NULL, 0x11, 0x10); /* basic VGA mode */ + svga_wcrt_mask(0x46, 0x00, 0x04); /* 8bit pixel path */ + dac_set_mode(par->dac, DAC_PSEUDO8_8); + + break; + case 1: + pr_debug("fb%d: 4 bit pseudocolor\n", info->node); + vga_wgfx(NULL, VGA_GFX_MODE, 0x40); + + vga_wseq(NULL, 0x11, 0x10); /* basic VGA mode */ + svga_wcrt_mask(0x46, 0x00, 0x04); /* 8bit pixel path */ + dac_set_mode(par->dac, DAC_PSEUDO8_8); + break; + case 2: + pr_debug("fb%d: 4 bit pseudocolor, planar\n", info->node); + + vga_wseq(NULL, 0x11, 0x10); /* basic VGA mode */ + svga_wcrt_mask(0x46, 0x00, 0x04); /* 8bit pixel path */ + dac_set_mode(par->dac, DAC_PSEUDO8_8); + break; + case 3: + pr_debug("fb%d: 8 bit pseudocolor\n", info->node); + + vga_wseq(NULL, 0x11, 0x16); /* 8bpp accel mode */ + + if (info->var.pixclock > 20000) { + pr_debug("fb%d: not using multiplex\n", info->node); + svga_wcrt_mask(0x46, 0x00, 0x04); /* 8bit pixel path */ + dac_set_mode(par->dac, DAC_PSEUDO8_8); + } else { + pr_debug("fb%d: using multiplex\n", info->node); + svga_wcrt_mask(0x46, 0x04, 0x04); /* 16bit pixel path */ + dac_set_mode(par->dac, DAC_PSEUDO8_16); + hdiv = 2; + } + break; + case 4: + pr_debug("fb%d: 5/5/5 truecolor\n", info->node); + + vga_wseq(NULL, 0x11, 0x1A); /* 16bpp accel mode */ + svga_wcrt_mask(0x46, 0x04, 0x04); /* 16bit pixel path */ + dac_set_mode(par->dac, DAC_RGB1555_16); + break; + case 5: + pr_debug("fb%d: 5/6/5 truecolor\n", info->node); + + vga_wseq(NULL, 0x11, 0x1A); /* 16bpp accel mode */ + svga_wcrt_mask(0x46, 0x04, 0x04); /* 16bit pixel path */ + dac_set_mode(par->dac, DAC_RGB0565_16); + break; + case 6: + pr_debug("fb%d: 8/8/8 truecolor\n", info->node); + + vga_wseq(NULL, 0x11, 0x16); /* 8bpp accel mode ??? */ + svga_wcrt_mask(0x46, 0x04, 0x04); /* 16bit pixel path */ + dac_set_mode(par->dac, DAC_RGB0888_16); + hmul = 3; + hdiv = 2; + break; + case 7: + pr_debug("fb%d: 8/8/8/8 truecolor\n", info->node); + + vga_wseq(NULL, 0x11, 0x1E); /* 32bpp accel mode */ + svga_wcrt_mask(0x46, 0x04, 0x04); /* 16bit pixel path */ + dac_set_mode(par->dac, DAC_RGB8888_16); + hmul = 2; + break; + default: + printk(KERN_ERR "fb%d: unsupported mode - bug\n", info->node); + return -EINVAL; + } + + ark_set_pixclock(info, (hdiv * info->var.pixclock) / hmul); + svga_set_timings(&ark_timing_regs, &(info->var), hmul, hdiv, + (info->var.vmode & FB_VMODE_DOUBLE) ? 2 : 1, + (info->var.vmode & FB_VMODE_INTERLACED) ? 2 : 1, + hmul, info->node); + + /* Set interlaced mode start/end register */ + value = info->var.xres + info->var.left_margin + info->var.right_margin + info->var.hsync_len; + value = ((value * hmul / hdiv) / 8) - 5; + vga_wcrt(NULL, 0x42, (value + 1) / 2); + + memset_io(info->screen_base, 0x00, screen_size); + /* Device and screen back on */ + svga_wcrt_mask(0x17, 0x80, 0x80); + svga_wseq_mask(0x01, 0x00, 0x20); + + return 0; +} + +/* Set a colour register */ + +static int arkfb_setcolreg(u_int regno, u_int red, u_int green, u_int blue, + u_int transp, struct fb_info *fb) +{ + switch (fb->var.bits_per_pixel) { + case 0: + case 4: + if (regno >= 16) + return -EINVAL; + + if ((fb->var.bits_per_pixel == 4) && + (fb->var.nonstd == 0)) { + outb(0xF0, VGA_PEL_MSK); + outb(regno*16, VGA_PEL_IW); + } else { + outb(0x0F, VGA_PEL_MSK); + outb(regno, VGA_PEL_IW); + } + outb(red >> 10, VGA_PEL_D); + outb(green >> 10, VGA_PEL_D); + outb(blue >> 10, VGA_PEL_D); + break; + case 8: + if (regno >= 256) + return -EINVAL; + + outb(0xFF, VGA_PEL_MSK); + outb(regno, VGA_PEL_IW); + outb(red >> 10, VGA_PEL_D); + outb(green >> 10, VGA_PEL_D); + outb(blue >> 10, VGA_PEL_D); + break; + case 16: + if (regno >= 16) + return 0; + + if (fb->var.green.length == 5) + ((u32*)fb->pseudo_palette)[regno] = ((red & 0xF800) >> 1) | + ((green & 0xF800) >> 6) | ((blue & 0xF800) >> 11); + else if (fb->var.green.length == 6) + ((u32*)fb->pseudo_palette)[regno] = (red & 0xF800) | + ((green & 0xFC00) >> 5) | ((blue & 0xF800) >> 11); + else + return -EINVAL; + break; + case 24: + case 32: + if (regno >= 16) + return 0; + + ((u32*)fb->pseudo_palette)[regno] = ((red & 0xFF00) << 8) | + (green & 0xFF00) | ((blue & 0xFF00) >> 8); + break; + default: + return -EINVAL; + } + + return 0; +} + +/* Set the display blanking state */ + +static int arkfb_blank(int blank_mode, struct fb_info *info) +{ + switch (blank_mode) { + case FB_BLANK_UNBLANK: + pr_debug("fb%d: unblank\n", info->node); + svga_wseq_mask(0x01, 0x00, 0x20); + svga_wcrt_mask(0x17, 0x80, 0x80); + break; + case FB_BLANK_NORMAL: + pr_debug("fb%d: blank\n", info->node); + svga_wseq_mask(0x01, 0x20, 0x20); + svga_wcrt_mask(0x17, 0x80, 0x80); + break; + case FB_BLANK_POWERDOWN: + case FB_BLANK_HSYNC_SUSPEND: + case FB_BLANK_VSYNC_SUSPEND: + pr_debug("fb%d: sync down\n", info->node); + svga_wseq_mask(0x01, 0x20, 0x20); + svga_wcrt_mask(0x17, 0x00, 0x80); + break; + } + return 0; +} + + +/* Pan the display */ + +static int arkfb_pan_display(struct fb_var_screeninfo *var, struct fb_info *info) +{ + unsigned int offset; + + /* Calculate the offset */ + if (var->bits_per_pixel == 0) { + offset = (var->yoffset / 16) * (var->xres_virtual / 2) + (var->xoffset / 2); + offset = offset >> 2; + } else { + offset = (var->yoffset * info->fix.line_length) + + (var->xoffset * var->bits_per_pixel / 8); + offset = offset >> ((var->bits_per_pixel == 4) ? 2 : 3); + } + + /* Set the offset */ + svga_wcrt_multi(ark_start_address_regs, offset); + + return 0; +} + + +/* ------------------------------------------------------------------------- */ + + +/* Frame buffer operations */ + +static struct fb_ops arkfb_ops = { + .owner = THIS_MODULE, + .fb_open = arkfb_open, + .fb_release = arkfb_release, + .fb_check_var = arkfb_check_var, + .fb_set_par = arkfb_set_par, + .fb_setcolreg = arkfb_setcolreg, + .fb_blank = arkfb_blank, + .fb_pan_display = arkfb_pan_display, + .fb_fillrect = arkfb_fillrect, + .fb_copyarea = cfb_copyarea, + .fb_imageblit = arkfb_imageblit, + .fb_get_caps = svga_get_caps, +}; + + +/* ------------------------------------------------------------------------- */ + + +/* PCI probe */ +static int __devinit ark_pci_probe(struct pci_dev *dev, const struct pci_device_id *id) +{ + struct fb_info *info; + struct arkfb_info *par; + int rc; + u8 regval; + + /* Ignore secondary VGA device because there is no VGA arbitration */ + if (! svga_primary_device(dev)) { + dev_info(&(dev->dev), "ignoring secondary device\n"); + return -ENODEV; + } + + /* Allocate and fill driver data structure */ + info = framebuffer_alloc(sizeof(struct arkfb_info), NULL); + if (! info) { + dev_err(&(dev->dev), "cannot allocate memory\n"); + return -ENOMEM; + } + + par = info->par; + mutex_init(&par->open_lock); + + info->flags = FBINFO_PARTIAL_PAN_OK | FBINFO_HWACCEL_YPAN; + info->fbops = &arkfb_ops; + + /* Prepare PCI device */ + rc = pci_enable_device(dev); + if (rc < 0) { + dev_err(&(dev->dev), "cannot enable PCI device\n"); + goto err_enable_device; + } + + rc = pci_request_regions(dev, "arkfb"); + if (rc < 0) { + dev_err(&(dev->dev), "cannot reserve framebuffer region\n"); + goto err_request_regions; + } + + par->dac = ics5342_init(ark_dac_read_regs, ark_dac_write_regs, info); + if (! par->dac) { + rc = -ENOMEM; + dev_err(&(dev->dev), "RAMDAC initialization failed\n"); + goto err_dac; + } + + info->fix.smem_start = pci_resource_start(dev, 0); + info->fix.smem_len = pci_resource_len(dev, 0); + + /* Map physical IO memory address into kernel space */ + info->screen_base = pci_iomap(dev, 0, 0); + if (! info->screen_base) { + rc = -ENOMEM; + dev_err(&(dev->dev), "iomap for framebuffer failed\n"); + goto err_iomap; + } + + /* FIXME get memsize */ + regval = vga_rseq(NULL, 0x10); + info->screen_size = (1 << (regval >> 6)) << 20; + info->fix.smem_len = info->screen_size; + + strcpy(info->fix.id, "ARK 2000PV"); + info->fix.mmio_start = 0; + info->fix.mmio_len = 0; + info->fix.type = FB_TYPE_PACKED_PIXELS; + info->fix.visual = FB_VISUAL_PSEUDOCOLOR; + info->fix.ypanstep = 0; + info->fix.accel = FB_ACCEL_NONE; + info->pseudo_palette = (void*) (par->pseudo_palette); + + /* Prepare startup mode */ + rc = fb_find_mode(&(info->var), info, mode, NULL, 0, NULL, 8); + if (! ((rc == 1) || (rc == 2))) { + rc = -EINVAL; + dev_err(&(dev->dev), "mode %s not found\n", mode); + goto err_find_mode; + } + + rc = fb_alloc_cmap(&info->cmap, 256, 0); + if (rc < 0) { + dev_err(&(dev->dev), "cannot allocate colormap\n"); + goto err_alloc_cmap; + } + + rc = register_framebuffer(info); + if (rc < 0) { + dev_err(&(dev->dev), "cannot register framebugger\n"); + goto err_reg_fb; + } + + printk(KERN_INFO "fb%d: %s on %s, %d MB RAM\n", info->node, info->fix.id, + pci_name(dev), info->fix.smem_len >> 20); + + /* Record a reference to the driver data */ + pci_set_drvdata(dev, info); + +#ifdef CONFIG_MTRR + if (mtrr) { + par->mtrr_reg = -1; + par->mtrr_reg = mtrr_add(info->fix.smem_start, info->fix.smem_len, MTRR_TYPE_WRCOMB, 1); + } +#endif + + return 0; + + /* Error handling */ +err_reg_fb: + fb_dealloc_cmap(&info->cmap); +err_alloc_cmap: +err_find_mode: + pci_iounmap(dev, info->screen_base); +err_iomap: + dac_release(par->dac); +err_dac: + pci_release_regions(dev); +err_request_regions: +/* pci_disable_device(dev); */ +err_enable_device: + framebuffer_release(info); + return rc; +} + +/* PCI remove */ + +static void __devexit ark_pci_remove(struct pci_dev *dev) +{ + struct fb_info *info = pci_get_drvdata(dev); + struct arkfb_info *par = info->par; + + if (info) { +#ifdef CONFIG_MTRR + if (par->mtrr_reg >= 0) { + mtrr_del(par->mtrr_reg, 0, 0); + par->mtrr_reg = -1; + } +#endif + + dac_release(par->dac); + unregister_framebuffer(info); + fb_dealloc_cmap(&info->cmap); + + pci_iounmap(dev, info->screen_base); + pci_release_regions(dev); +/* pci_disable_device(dev); */ + + pci_set_drvdata(dev, NULL); + framebuffer_release(info); + } +} + + +#ifdef CONFIG_PM +/* PCI suspend */ + +static int ark_pci_suspend (struct pci_dev* dev, pm_message_t state) +{ + struct fb_info *info = pci_get_drvdata(dev); + struct arkfb_info *par = info->par; + + dev_info(&(dev->dev), "suspend\n"); + + acquire_console_sem(); + mutex_lock(&(par->open_lock)); + + if ((state.event == PM_EVENT_FREEZE) || (par->ref_count == 0)) { + mutex_unlock(&(par->open_lock)); + release_console_sem(); + return 0; + } + + fb_set_suspend(info, 1); + + pci_save_state(dev); + pci_disable_device(dev); + pci_set_power_state(dev, pci_choose_state(dev, state)); + + mutex_unlock(&(par->open_lock)); + release_console_sem(); + + return 0; +} + + +/* PCI resume */ + +static int ark_pci_resume (struct pci_dev* dev) +{ + struct fb_info *info = pci_get_drvdata(dev); + struct arkfb_info *par = info->par; + + dev_info(&(dev->dev), "resume\n"); + + acquire_console_sem(); + mutex_lock(&(par->open_lock)); + + if (par->ref_count == 0) { + mutex_unlock(&(par->open_lock)); + release_console_sem(); + return 0; + } + + pci_set_power_state(dev, PCI_D0); + pci_restore_state(dev); + + if (pci_enable_device(dev)) + goto fail; + + pci_set_master(dev); + + arkfb_set_par(info); + fb_set_suspend(info, 0); + + mutex_unlock(&(par->open_lock)); +fail: + release_console_sem(); + return 0; +} +#else +#define ark_pci_suspend NULL +#define ark_pci_resume NULL +#endif /* CONFIG_PM */ + +/* List of boards that we are trying to support */ + +static struct pci_device_id ark_devices[] __devinitdata = { + {PCI_DEVICE(0xEDD8, 0xA099)}, + {0, 0, 0, 0, 0, 0, 0} +}; + + +MODULE_DEVICE_TABLE(pci, ark_devices); + +static struct pci_driver arkfb_pci_driver = { + .name = "arkfb", + .id_table = ark_devices, + .probe = ark_pci_probe, + .remove = __devexit_p(ark_pci_remove), + .suspend = ark_pci_suspend, + .resume = ark_pci_resume, +}; + +/* Cleanup */ + +static void __exit arkfb_cleanup(void) +{ + pr_debug("arkfb: cleaning up\n"); + pci_unregister_driver(&arkfb_pci_driver); +} + +/* Driver Initialisation */ + +static int __init arkfb_init(void) +{ + +#ifndef MODULE + char *option = NULL; + + if (fb_get_options("arkfb", &option)) + return -ENODEV; + + if (option && *option) + mode = option; +#endif + + pr_debug("arkfb: initializing\n"); + return pci_register_driver(&arkfb_pci_driver); +} + +module_init(arkfb_init); +module_exit(arkfb_cleanup); diff --git a/drivers/video/console/softcursor.c b/drivers/video/console/softcursor.c index f577bd80e020..03cfb7ac5733 100644 --- a/drivers/video/console/softcursor.c +++ b/drivers/video/console/softcursor.c @@ -1,5 +1,5 @@ /* - * linux/drivers/video/softcursor.c + * linux/drivers/video/console/softcursor.c * * Generic software cursor for frame buffer devices * diff --git a/drivers/video/fbmem.c b/drivers/video/fbmem.c index 08d4e11d9121..38c2e2558f5e 100644 --- a/drivers/video/fbmem.c +++ b/drivers/video/fbmem.c @@ -1236,6 +1236,10 @@ fb_mmap(struct file *file, struct vm_area_struct * vma) pgprot_val(vma->vm_page_prot) |= _PAGE_NO_CACHE; #elif defined(__arm__) || defined(__sh__) || defined(__m32r__) vma->vm_page_prot = pgprot_writecombine(vma->vm_page_prot); +#elif defined(__avr32__) + vma->vm_page_prot = __pgprot((pgprot_val(vma->vm_page_prot) + & ~_PAGE_CACHABLE) + | (_PAGE_BUFFER | _PAGE_DIRTY)); #elif defined(__ia64__) if (efi_range_is_wc(vma->vm_start, vma->vm_end - vma->vm_start)) vma->vm_page_prot = pgprot_writecombine(vma->vm_page_prot); diff --git a/drivers/video/i810/i810_main.c b/drivers/video/i810/i810_main.c index 7e760197cf29..1a7d7789d877 100644 --- a/drivers/video/i810/i810_main.c +++ b/drivers/video/i810/i810_main.c @@ -1717,7 +1717,7 @@ static int __devinit i810_alloc_agp_mem(struct fb_info *info) * @info: pointer to device specific info structure * * DESCRIPTION: - * Sets the the user monitor's horizontal and vertical + * Sets the user monitor's horizontal and vertical * frequency limits */ static void __devinit i810_init_monspecs(struct fb_info *info) diff --git a/drivers/video/matrox/matroxfb_Ti3026.c b/drivers/video/matrox/matroxfb_Ti3026.c index a5690a5f29d5..9445cdb759b1 100644 --- a/drivers/video/matrox/matroxfb_Ti3026.c +++ b/drivers/video/matrox/matroxfb_Ti3026.c @@ -72,7 +72,7 @@ * (c) 1998 Gerd Knorr <kraxel@cs.tu-berlin.de> * * (following author is not in any relation with this code, but his ideas - * were used when writting this driver) + * were used when writing this driver) * * FreeVBE/AF (Matrox), "Shawn Hargreaves" <shawn@talula.demon.co.uk> * diff --git a/drivers/video/matrox/matroxfb_accel.c b/drivers/video/matrox/matroxfb_accel.c index a5c825d99466..c57aaadf410c 100644 --- a/drivers/video/matrox/matroxfb_accel.c +++ b/drivers/video/matrox/matroxfb_accel.c @@ -70,7 +70,7 @@ * (c) 1998 Gerd Knorr <kraxel@cs.tu-berlin.de> * * (following author is not in any relation with this code, but his ideas - * were used when writting this driver) + * were used when writing this driver) * * FreeVBE/AF (Matrox), "Shawn Hargreaves" <shawn@talula.demon.co.uk> * diff --git a/drivers/video/matrox/matroxfb_base.c b/drivers/video/matrox/matroxfb_base.c index cb2aa402ddfd..c8559a756b75 100644 --- a/drivers/video/matrox/matroxfb_base.c +++ b/drivers/video/matrox/matroxfb_base.c @@ -93,7 +93,7 @@ * (c) 1998 Gerd Knorr <kraxel@cs.tu-berlin.de> * * (following author is not in any relation with this code, but his ideas - * were used when writting this driver) + * were used when writing this driver) * * FreeVBE/AF (Matrox), "Shawn Hargreaves" <shawn@talula.demon.co.uk> * diff --git a/drivers/video/matrox/matroxfb_misc.c b/drivers/video/matrox/matroxfb_misc.c index 18886b629cb1..5948e54b9ef9 100644 --- a/drivers/video/matrox/matroxfb_misc.c +++ b/drivers/video/matrox/matroxfb_misc.c @@ -78,7 +78,7 @@ * (c) 1998 Gerd Knorr <kraxel@cs.tu-berlin.de> * * (following author is not in any relation with this code, but his ideas - * were used when writting this driver) + * were used when writing this driver) * * FreeVBE/AF (Matrox), "Shawn Hargreaves" <shawn@talula.demon.co.uk> * diff --git a/drivers/video/nvidia/nv_hw.c b/drivers/video/nvidia/nv_hw.c index f297c7b14a41..c627955aa124 100644 --- a/drivers/video/nvidia/nv_hw.c +++ b/drivers/video/nvidia/nv_hw.c @@ -149,8 +149,7 @@ static void nvGetClocks(struct nvidia_par *par, unsigned int *MClk, pll = NV_RD32(par->PMC, 0x4024); M = pll & 0xFF; N = (pll >> 8) & 0xFF; - if (((par->Chipset & 0xfff0) == 0x0290) || - ((par->Chipset & 0xfff0) == 0x0390)) { + if (((par->Chipset & 0xfff0) == 0x0290) || ((par->Chipset & 0xfff0) == 0x0390) || ((par->Chipset & 0xfff0) == 0x02E0)) { MB = 1; NB = 1; } else { @@ -963,6 +962,7 @@ void NVLoadStateExt(struct nvidia_par *par, RIVA_HW_STATE * state) if (((par->Chipset & 0xfff0) == 0x0090) || ((par->Chipset & 0xfff0) == 0x01D0) || + ((par->Chipset & 0xfff0) == 0x02E0) || ((par->Chipset & 0xfff0) == 0x0290)) regions = 15; for(i = 0; i < regions; i++) { @@ -1275,6 +1275,7 @@ void NVLoadStateExt(struct nvidia_par *par, RIVA_HW_STATE * state) 0x00100000); break; case 0x0090: + case 0x02E0: case 0x0290: NV_WR32(par->PRAMDAC, 0x0608, NV_RD32(par->PRAMDAC, 0x0608) | @@ -1352,6 +1353,7 @@ void NVLoadStateExt(struct nvidia_par *par, RIVA_HW_STATE * state) } else { if (((par->Chipset & 0xfff0) == 0x0090) || ((par->Chipset & 0xfff0) == 0x01D0) || + ((par->Chipset & 0xfff0) == 0x02E0) || ((par->Chipset & 0xfff0) == 0x0290)) { for (i = 0; i < 60; i++) { NV_WR32(par->PGRAPH, @@ -1403,6 +1405,7 @@ void NVLoadStateExt(struct nvidia_par *par, RIVA_HW_STATE * state) } else { if ((par->Chipset & 0xfff0) == 0x0090 || (par->Chipset & 0xfff0) == 0x01D0 || + (par->Chipset & 0xfff0) == 0x02E0 || (par->Chipset & 0xfff0) == 0x0290) { NV_WR32(par->PGRAPH, 0x0DF0, NV_RD32(par->PFB, 0x0200)); diff --git a/drivers/video/nvidia/nvidia.c b/drivers/video/nvidia/nvidia.c index 7c36b5fe582e..f85edf084da3 100644 --- a/drivers/video/nvidia/nvidia.c +++ b/drivers/video/nvidia/nvidia.c @@ -1243,6 +1243,7 @@ static u32 __devinit nvidia_get_arch(struct fb_info *info) case 0x0140: /* GeForce 6600 */ case 0x0160: /* GeForce 6200 */ case 0x01D0: /* GeForce 7200, 7300, 7400 */ + case 0x02E0: /* GeForce 7300 GT */ case 0x0090: /* GeForce 7800 */ case 0x0210: /* GeForce 6800 */ case 0x0220: /* GeForce 6200 */ diff --git a/drivers/video/s3fb.c b/drivers/video/s3fb.c index 756fafb41d78..d11735895a01 100644 --- a/drivers/video/s3fb.c +++ b/drivers/video/s3fb.c @@ -796,23 +796,6 @@ static int s3fb_pan_display(struct fb_var_screeninfo *var, struct fb_info *info) return 0; } -/* Get capabilities of accelerator based on the mode */ - -static void s3fb_get_caps(struct fb_info *info, struct fb_blit_caps *caps, - struct fb_var_screeninfo *var) -{ - if (var->bits_per_pixel == 0) { - /* can only support 256 8x16 bitmap */ - caps->x = 1 << (8 - 1); - caps->y = 1 << (16 - 1); - caps->len = 256; - } else { - caps->x = ~(u32)0; - caps->y = ~(u32)0; - caps->len = ~(u32)0; - } -} - /* ------------------------------------------------------------------------- */ /* Frame buffer operations */ @@ -829,7 +812,7 @@ static struct fb_ops s3fb_ops = { .fb_fillrect = s3fb_fillrect, .fb_copyarea = cfb_copyarea, .fb_imageblit = s3fb_imageblit, - .fb_get_caps = s3fb_get_caps, + .fb_get_caps = svga_get_caps, }; /* ------------------------------------------------------------------------- */ diff --git a/drivers/video/skeletonfb.c b/drivers/video/skeletonfb.c index 842b5cd054c6..836a612af977 100644 --- a/drivers/video/skeletonfb.c +++ b/drivers/video/skeletonfb.c @@ -14,7 +14,7 @@ * of it. * * First the roles of struct fb_info and struct display have changed. Struct - * display will go away. The way the the new framebuffer console code will + * display will go away. The way the new framebuffer console code will * work is that it will act to translate data about the tty/console in * struct vc_data to data in a device independent way in struct fb_info. Then * various functions in struct fb_ops will be called to store the device diff --git a/drivers/video/svgalib.c b/drivers/video/svgalib.c index 079cdc911e48..25df928d37d8 100644 --- a/drivers/video/svgalib.c +++ b/drivers/video/svgalib.c @@ -347,6 +347,23 @@ int svga_get_tilemax(struct fb_info *info) return 256; } +/* Get capabilities of accelerator based on the mode */ + +void svga_get_caps(struct fb_info *info, struct fb_blit_caps *caps, + struct fb_var_screeninfo *var) +{ + if (var->bits_per_pixel == 0) { + /* can only support 256 8x16 bitmap */ + caps->x = 1 << (8 - 1); + caps->y = 1 << (16 - 1); + caps->len = 256; + } else { + caps->x = (var->bits_per_pixel == 4) ? 1 << (8 - 1) : ~(u32)0; + caps->y = ~(u32)0; + caps->len = ~(u32)0; + } +} +EXPORT_SYMBOL(svga_get_caps); /* ------------------------------------------------------------------------- */ diff --git a/drivers/video/vt8623fb.c b/drivers/video/vt8623fb.c new file mode 100644 index 000000000000..5e9755e464a1 --- /dev/null +++ b/drivers/video/vt8623fb.c @@ -0,0 +1,927 @@ +/* + * linux/drivers/video/vt8623fb.c - fbdev driver for + * integrated graphic core in VIA VT8623 [CLE266] chipset + * + * Copyright (c) 2006-2007 Ondrej Zajicek <santiago@crfreenet.org> + * + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file COPYING in the main directory of this archive for + * more details. + * + * Code is based on s3fb, some parts are from David Boucher's viafb + * (http://davesdomain.org.uk/viafb/) + */ + +#include <linux/version.h> +#include <linux/module.h> +#include <linux/kernel.h> +#include <linux/errno.h> +#include <linux/string.h> +#include <linux/mm.h> +#include <linux/tty.h> +#include <linux/slab.h> +#include <linux/delay.h> +#include <linux/fb.h> +#include <linux/svga.h> +#include <linux/init.h> +#include <linux/pci.h> +#include <linux/console.h> /* Why should fb driver call console functions? because acquire_console_sem() */ +#include <video/vga.h> + +#ifdef CONFIG_MTRR +#include <asm/mtrr.h> +#endif + +struct vt8623fb_info { + char __iomem *mmio_base; + int mtrr_reg; + struct vgastate state; + struct mutex open_lock; + unsigned int ref_count; + u32 pseudo_palette[16]; +}; + + + +/* ------------------------------------------------------------------------- */ + +static const struct svga_fb_format vt8623fb_formats[] = { + { 0, {0, 6, 0}, {0, 6, 0}, {0, 6, 0}, {0, 0, 0}, 0, + FB_TYPE_TEXT, FB_AUX_TEXT_SVGA_STEP8, FB_VISUAL_PSEUDOCOLOR, 16, 16}, + { 4, {0, 6, 0}, {0, 6, 0}, {0, 6, 0}, {0, 0, 0}, 0, + FB_TYPE_PACKED_PIXELS, 0, FB_VISUAL_PSEUDOCOLOR, 16, 16}, + { 4, {0, 6, 0}, {0, 6, 0}, {0, 6, 0}, {0, 0, 0}, 1, + FB_TYPE_INTERLEAVED_PLANES, 1, FB_VISUAL_PSEUDOCOLOR, 16, 16}, + { 8, {0, 6, 0}, {0, 6, 0}, {0, 6, 0}, {0, 0, 0}, 0, + FB_TYPE_PACKED_PIXELS, 0, FB_VISUAL_PSEUDOCOLOR, 8, 8}, +/* {16, {10, 5, 0}, {5, 5, 0}, {0, 5, 0}, {0, 0, 0}, 0, + FB_TYPE_PACKED_PIXELS, 0, FB_VISUAL_TRUECOLOR, 4, 4}, */ + {16, {11, 5, 0}, {5, 6, 0}, {0, 5, 0}, {0, 0, 0}, 0, + FB_TYPE_PACKED_PIXELS, 0, FB_VISUAL_TRUECOLOR, 4, 4}, + {32, {16, 8, 0}, {8, 8, 0}, {0, 8, 0}, {0, 0, 0}, 0, + FB_TYPE_PACKED_PIXELS, 0, FB_VISUAL_TRUECOLOR, 2, 2}, + SVGA_FORMAT_END +}; + +static const struct svga_pll vt8623_pll = {2, 127, 2, 7, 0, 3, + 60000, 300000, 14318}; + +/* CRT timing register sets */ + +struct vga_regset vt8623_h_total_regs[] = {{0x00, 0, 7}, {0x36, 3, 3}, VGA_REGSET_END}; +struct vga_regset vt8623_h_display_regs[] = {{0x01, 0, 7}, VGA_REGSET_END}; +struct vga_regset vt8623_h_blank_start_regs[] = {{0x02, 0, 7}, VGA_REGSET_END}; +struct vga_regset vt8623_h_blank_end_regs[] = {{0x03, 0, 4}, {0x05, 7, 7}, {0x33, 5, 5}, VGA_REGSET_END}; +struct vga_regset vt8623_h_sync_start_regs[] = {{0x04, 0, 7}, {0x33, 4, 4}, VGA_REGSET_END}; +struct vga_regset vt8623_h_sync_end_regs[] = {{0x05, 0, 4}, VGA_REGSET_END}; + +struct vga_regset vt8623_v_total_regs[] = {{0x06, 0, 7}, {0x07, 0, 0}, {0x07, 5, 5}, {0x35, 0, 0}, VGA_REGSET_END}; +struct vga_regset vt8623_v_display_regs[] = {{0x12, 0, 7}, {0x07, 1, 1}, {0x07, 6, 6}, {0x35, 2, 2}, VGA_REGSET_END}; +struct vga_regset vt8623_v_blank_start_regs[] = {{0x15, 0, 7}, {0x07, 3, 3}, {0x09, 5, 5}, {0x35, 3, 3}, VGA_REGSET_END}; +struct vga_regset vt8623_v_blank_end_regs[] = {{0x16, 0, 7}, VGA_REGSET_END}; +struct vga_regset vt8623_v_sync_start_regs[] = {{0x10, 0, 7}, {0x07, 2, 2}, {0x07, 7, 7}, {0x35, 1, 1}, VGA_REGSET_END}; +struct vga_regset vt8623_v_sync_end_regs[] = {{0x11, 0, 3}, VGA_REGSET_END}; + +struct vga_regset vt8623_offset_regs[] = {{0x13, 0, 7}, {0x35, 5, 7}, VGA_REGSET_END}; +struct vga_regset vt8623_line_compare_regs[] = {{0x18, 0, 7}, {0x07, 4, 4}, {0x09, 6, 6}, {0x33, 0, 2}, {0x35, 4, 4}, VGA_REGSET_END}; +struct vga_regset vt8623_fetch_count_regs[] = {{0x1C, 0, 7}, {0x1D, 0, 1}, VGA_REGSET_END}; +struct vga_regset vt8623_start_address_regs[] = {{0x0d, 0, 7}, {0x0c, 0, 7}, {0x34, 0, 7}, {0x48, 0, 1}, VGA_REGSET_END}; + +struct svga_timing_regs vt8623_timing_regs = { + vt8623_h_total_regs, vt8623_h_display_regs, vt8623_h_blank_start_regs, + vt8623_h_blank_end_regs, vt8623_h_sync_start_regs, vt8623_h_sync_end_regs, + vt8623_v_total_regs, vt8623_v_display_regs, vt8623_v_blank_start_regs, + vt8623_v_blank_end_regs, vt8623_v_sync_start_regs, vt8623_v_sync_end_regs, +}; + + +/* ------------------------------------------------------------------------- */ + + +/* Module parameters */ + +static char *mode = "640x480-8@60"; + +#ifdef CONFIG_MTRR +static int mtrr = 1; +#endif + +MODULE_AUTHOR("(c) 2006 Ondrej Zajicek <santiago@crfreenet.org>"); +MODULE_LICENSE("GPL"); +MODULE_DESCRIPTION("fbdev driver for integrated graphics core in VIA VT8623 [CLE266]"); + +module_param(mode, charp, 0644); +MODULE_PARM_DESC(mode, "Default video mode ('640x480-8@60', etc)"); + +#ifdef CONFIG_MTRR +module_param(mtrr, int, 0444); +MODULE_PARM_DESC(mtrr, "Enable write-combining with MTRR (1=enable, 0=disable, default=1)"); +#endif + + +/* ------------------------------------------------------------------------- */ + + +static struct fb_tile_ops vt8623fb_tile_ops = { + .fb_settile = svga_settile, + .fb_tilecopy = svga_tilecopy, + .fb_tilefill = svga_tilefill, + .fb_tileblit = svga_tileblit, + .fb_tilecursor = svga_tilecursor, + .fb_get_tilemax = svga_get_tilemax, +}; + + +/* ------------------------------------------------------------------------- */ + + +/* image data is MSB-first, fb structure is MSB-first too */ +static inline u32 expand_color(u32 c) +{ + return ((c & 1) | ((c & 2) << 7) | ((c & 4) << 14) | ((c & 8) << 21)) * 0xFF; +} + +/* vt8623fb_iplan_imageblit silently assumes that almost everything is 8-pixel aligned */ +static void vt8623fb_iplan_imageblit(struct fb_info *info, const struct fb_image *image) +{ + u32 fg = expand_color(image->fg_color); + u32 bg = expand_color(image->bg_color); + const u8 *src1, *src; + u8 __iomem *dst1; + u32 __iomem *dst; + u32 val; + int x, y; + + src1 = image->data; + dst1 = info->screen_base + (image->dy * info->fix.line_length) + + ((image->dx / 8) * 4); + + for (y = 0; y < image->height; y++) { + src = src1; + dst = (u32 __iomem *) dst1; + for (x = 0; x < image->width; x += 8) { + val = *(src++) * 0x01010101; + val = (val & fg) | (~val & bg); + fb_writel(val, dst++); + } + src1 += image->width / 8; + dst1 += info->fix.line_length; + } +} + +/* vt8623fb_iplan_fillrect silently assumes that almost everything is 8-pixel aligned */ +static void vt8623fb_iplan_fillrect(struct fb_info *info, const struct fb_fillrect *rect) +{ + u32 fg = expand_color(rect->color); + u8 __iomem *dst1; + u32 __iomem *dst; + int x, y; + + dst1 = info->screen_base + (rect->dy * info->fix.line_length) + + ((rect->dx / 8) * 4); + + for (y = 0; y < rect->height; y++) { + dst = (u32 __iomem *) dst1; + for (x = 0; x < rect->width; x += 8) { + fb_writel(fg, dst++); + } + dst1 += info->fix.line_length; + } +} + + +/* image data is MSB-first, fb structure is high-nibble-in-low-byte-first */ +static inline u32 expand_pixel(u32 c) +{ + return (((c & 1) << 24) | ((c & 2) << 27) | ((c & 4) << 14) | ((c & 8) << 17) | + ((c & 16) << 4) | ((c & 32) << 7) | ((c & 64) >> 6) | ((c & 128) >> 3)) * 0xF; +} + +/* vt8623fb_cfb4_imageblit silently assumes that almost everything is 8-pixel aligned */ +static void vt8623fb_cfb4_imageblit(struct fb_info *info, const struct fb_image *image) +{ + u32 fg = image->fg_color * 0x11111111; + u32 bg = image->bg_color * 0x11111111; + const u8 *src1, *src; + u8 __iomem *dst1; + u32 __iomem *dst; + u32 val; + int x, y; + + src1 = image->data; + dst1 = info->screen_base + (image->dy * info->fix.line_length) + + ((image->dx / 8) * 4); + + for (y = 0; y < image->height; y++) { + src = src1; + dst = (u32 __iomem *) dst1; + for (x = 0; x < image->width; x += 8) { + val = expand_pixel(*(src++)); + val = (val & fg) | (~val & bg); + fb_writel(val, dst++); + } + src1 += image->width / 8; + dst1 += info->fix.line_length; + } +} + +static void vt8623fb_imageblit(struct fb_info *info, const struct fb_image *image) +{ + if ((info->var.bits_per_pixel == 4) && (image->depth == 1) + && ((image->width % 8) == 0) && ((image->dx % 8) == 0)) { + if (info->fix.type == FB_TYPE_INTERLEAVED_PLANES) + vt8623fb_iplan_imageblit(info, image); + else + vt8623fb_cfb4_imageblit(info, image); + } else + cfb_imageblit(info, image); +} + +static void vt8623fb_fillrect(struct fb_info *info, const struct fb_fillrect *rect) +{ + if ((info->var.bits_per_pixel == 4) + && ((rect->width % 8) == 0) && ((rect->dx % 8) == 0) + && (info->fix.type == FB_TYPE_INTERLEAVED_PLANES)) + vt8623fb_iplan_fillrect(info, rect); + else + cfb_fillrect(info, rect); +} + + +/* ------------------------------------------------------------------------- */ + + +static void vt8623_set_pixclock(struct fb_info *info, u32 pixclock) +{ + u16 m, n, r; + u8 regval; + int rv; + + rv = svga_compute_pll(&vt8623_pll, 1000000000 / pixclock, &m, &n, &r, info->node); + if (rv < 0) { + printk(KERN_ERR "fb%d: cannot set requested pixclock, keeping old value\n", info->node); + return; + } + + /* Set VGA misc register */ + regval = vga_r(NULL, VGA_MIS_R); + vga_w(NULL, VGA_MIS_W, regval | VGA_MIS_ENB_PLL_LOAD); + + /* Set clock registers */ + vga_wseq(NULL, 0x46, (n | (r << 6))); + vga_wseq(NULL, 0x47, m); + + udelay(1000); + + /* PLL reset */ + svga_wseq_mask(0x40, 0x02, 0x02); + svga_wseq_mask(0x40, 0x00, 0x02); +} + + +static int vt8623fb_open(struct fb_info *info, int user) +{ + struct vt8623fb_info *par = info->par; + + mutex_lock(&(par->open_lock)); + if (par->ref_count == 0) { + memset(&(par->state), 0, sizeof(struct vgastate)); + par->state.flags = VGA_SAVE_MODE | VGA_SAVE_FONTS | VGA_SAVE_CMAP; + par->state.num_crtc = 0xA2; + par->state.num_seq = 0x50; + save_vga(&(par->state)); + } + + par->ref_count++; + mutex_unlock(&(par->open_lock)); + + return 0; +} + +static int vt8623fb_release(struct fb_info *info, int user) +{ + struct vt8623fb_info *par = info->par; + + mutex_lock(&(par->open_lock)); + if (par->ref_count == 0) { + mutex_unlock(&(par->open_lock)); + return -EINVAL; + } + + if (par->ref_count == 1) + restore_vga(&(par->state)); + + par->ref_count--; + mutex_unlock(&(par->open_lock)); + + return 0; +} + +static int vt8623fb_check_var(struct fb_var_screeninfo *var, struct fb_info *info) +{ + int rv, mem, step; + + /* Find appropriate format */ + rv = svga_match_format (vt8623fb_formats, var, NULL); + if (rv < 0) + { + printk(KERN_ERR "fb%d: unsupported mode requested\n", info->node); + return rv; + } + + /* Do not allow to have real resoulution larger than virtual */ + if (var->xres > var->xres_virtual) + var->xres_virtual = var->xres; + + if (var->yres > var->yres_virtual) + var->yres_virtual = var->yres; + + /* Round up xres_virtual to have proper alignment of lines */ + step = vt8623fb_formats[rv].xresstep - 1; + var->xres_virtual = (var->xres_virtual+step) & ~step; + + /* Check whether have enough memory */ + mem = ((var->bits_per_pixel * var->xres_virtual) >> 3) * var->yres_virtual; + if (mem > info->screen_size) + { + printk(KERN_ERR "fb%d: not enough framebuffer memory (%d kB requested , %d kB available)\n", info->node, mem >> 10, (unsigned int) (info->screen_size >> 10)); + return -EINVAL; + } + + /* Text mode is limited to 256 kB of memory */ + if ((var->bits_per_pixel == 0) && (mem > (256*1024))) + { + printk(KERN_ERR "fb%d: text framebuffer size too large (%d kB requested, 256 kB possible)\n", info->node, mem >> 10); + return -EINVAL; + } + + rv = svga_check_timings (&vt8623_timing_regs, var, info->node); + if (rv < 0) + { + printk(KERN_ERR "fb%d: invalid timings requested\n", info->node); + return rv; + } + + /* Interlaced mode not supported */ + if (var->vmode & FB_VMODE_INTERLACED) + return -EINVAL; + + return 0; +} + + +static int vt8623fb_set_par(struct fb_info *info) +{ + u32 mode, offset_value, fetch_value, screen_size; + u32 bpp = info->var.bits_per_pixel; + + if (bpp != 0) { + info->fix.ypanstep = 1; + info->fix.line_length = (info->var.xres_virtual * bpp) / 8; + + info->flags &= ~FBINFO_MISC_TILEBLITTING; + info->tileops = NULL; + + /* in 4bpp supports 8p wide tiles only, any tiles otherwise */ + info->pixmap.blit_x = (bpp == 4) ? (1 << (8 - 1)) : (~(u32)0); + info->pixmap.blit_y = ~(u32)0; + + offset_value = (info->var.xres_virtual * bpp) / 64; + fetch_value = ((info->var.xres * bpp) / 128) + 4; + + if (bpp == 4) + fetch_value = (info->var.xres / 8) + 8; /* + 0 is OK */ + + screen_size = info->var.yres_virtual * info->fix.line_length; + } else { + info->fix.ypanstep = 16; + info->fix.line_length = 0; + + info->flags |= FBINFO_MISC_TILEBLITTING; + info->tileops = &vt8623fb_tile_ops; + + /* supports 8x16 tiles only */ + info->pixmap.blit_x = 1 << (8 - 1); + info->pixmap.blit_y = 1 << (16 - 1); + + offset_value = info->var.xres_virtual / 16; + fetch_value = (info->var.xres / 8) + 8; + screen_size = (info->var.xres_virtual * info->var.yres_virtual) / 64; + } + + info->var.xoffset = 0; + info->var.yoffset = 0; + info->var.activate = FB_ACTIVATE_NOW; + + /* Unlock registers */ + svga_wseq_mask(0x10, 0x01, 0x01); + svga_wcrt_mask(0x11, 0x00, 0x80); + svga_wcrt_mask(0x47, 0x00, 0x01); + + /* Device, screen and sync off */ + svga_wseq_mask(0x01, 0x20, 0x20); + svga_wcrt_mask(0x36, 0x30, 0x30); + svga_wcrt_mask(0x17, 0x00, 0x80); + + /* Set default values */ + svga_set_default_gfx_regs(); + svga_set_default_atc_regs(); + svga_set_default_seq_regs(); + svga_set_default_crt_regs(); + svga_wcrt_multi(vt8623_line_compare_regs, 0xFFFFFFFF); + svga_wcrt_multi(vt8623_start_address_regs, 0); + + svga_wcrt_multi(vt8623_offset_regs, offset_value); + svga_wseq_multi(vt8623_fetch_count_regs, fetch_value); + + if (info->var.vmode & FB_VMODE_DOUBLE) + svga_wcrt_mask(0x09, 0x80, 0x80); + else + svga_wcrt_mask(0x09, 0x00, 0x80); + + svga_wseq_mask(0x1E, 0xF0, 0xF0); // DI/DVP bus + svga_wseq_mask(0x2A, 0x0F, 0x0F); // DI/DVP bus + svga_wseq_mask(0x16, 0x08, 0xBF); // FIFO read treshold + vga_wseq(NULL, 0x17, 0x1F); // FIFO depth + vga_wseq(NULL, 0x18, 0x4E); + svga_wseq_mask(0x1A, 0x08, 0x08); // enable MMIO ? + + vga_wcrt(NULL, 0x32, 0x00); + vga_wcrt(NULL, 0x34, 0x00); + vga_wcrt(NULL, 0x6A, 0x80); + vga_wcrt(NULL, 0x6A, 0xC0); + + vga_wgfx(NULL, 0x20, 0x00); + vga_wgfx(NULL, 0x21, 0x00); + vga_wgfx(NULL, 0x22, 0x00); + + /* Set SR15 according to number of bits per pixel */ + mode = svga_match_format(vt8623fb_formats, &(info->var), &(info->fix)); + switch (mode) { + case 0: + pr_debug("fb%d: text mode\n", info->node); + svga_set_textmode_vga_regs(); + svga_wseq_mask(0x15, 0x00, 0xFE); + svga_wcrt_mask(0x11, 0x60, 0x70); + break; + case 1: + pr_debug("fb%d: 4 bit pseudocolor\n", info->node); + vga_wgfx(NULL, VGA_GFX_MODE, 0x40); + svga_wseq_mask(0x15, 0x20, 0xFE); + svga_wcrt_mask(0x11, 0x00, 0x70); + break; + case 2: + pr_debug("fb%d: 4 bit pseudocolor, planar\n", info->node); + svga_wseq_mask(0x15, 0x00, 0xFE); + svga_wcrt_mask(0x11, 0x00, 0x70); + break; + case 3: + pr_debug("fb%d: 8 bit pseudocolor\n", info->node); + svga_wseq_mask(0x15, 0x22, 0xFE); + break; + case 4: + pr_debug("fb%d: 5/6/5 truecolor\n", info->node); + svga_wseq_mask(0x15, 0xB6, 0xFE); + break; + case 5: + pr_debug("fb%d: 8/8/8 truecolor\n", info->node); + svga_wseq_mask(0x15, 0xAE, 0xFE); + break; + default: + printk(KERN_ERR "vt8623fb: unsupported mode - bug\n"); + return (-EINVAL); + } + + vt8623_set_pixclock(info, info->var.pixclock); + svga_set_timings(&vt8623_timing_regs, &(info->var), 1, 1, + (info->var.vmode & FB_VMODE_DOUBLE) ? 2 : 1, 1, + 1, info->node); + + memset_io(info->screen_base, 0x00, screen_size); + + /* Device and screen back on */ + svga_wcrt_mask(0x17, 0x80, 0x80); + svga_wcrt_mask(0x36, 0x00, 0x30); + svga_wseq_mask(0x01, 0x00, 0x20); + + return 0; +} + + +static int vt8623fb_setcolreg(u_int regno, u_int red, u_int green, u_int blue, + u_int transp, struct fb_info *fb) +{ + switch (fb->var.bits_per_pixel) { + case 0: + case 4: + if (regno >= 16) + return -EINVAL; + + outb(0x0F, VGA_PEL_MSK); + outb(regno, VGA_PEL_IW); + outb(red >> 10, VGA_PEL_D); + outb(green >> 10, VGA_PEL_D); + outb(blue >> 10, VGA_PEL_D); + break; + case 8: + if (regno >= 256) + return -EINVAL; + + outb(0xFF, VGA_PEL_MSK); + outb(regno, VGA_PEL_IW); + outb(red >> 10, VGA_PEL_D); + outb(green >> 10, VGA_PEL_D); + outb(blue >> 10, VGA_PEL_D); + break; + case 16: + if (regno >= 16) + return 0; + + if (fb->var.green.length == 5) + ((u32*)fb->pseudo_palette)[regno] = ((red & 0xF800) >> 1) | + ((green & 0xF800) >> 6) | ((blue & 0xF800) >> 11); + else if (fb->var.green.length == 6) + ((u32*)fb->pseudo_palette)[regno] = (red & 0xF800) | + ((green & 0xFC00) >> 5) | ((blue & 0xF800) >> 11); + else + return -EINVAL; + break; + case 24: + case 32: + if (regno >= 16) + return 0; + + /* ((transp & 0xFF00) << 16) */ + ((u32*)fb->pseudo_palette)[regno] = ((red & 0xFF00) << 8) | + (green & 0xFF00) | ((blue & 0xFF00) >> 8); + break; + default: + return -EINVAL; + } + + return 0; +} + + +static int vt8623fb_blank(int blank_mode, struct fb_info *info) +{ + switch (blank_mode) { + case FB_BLANK_UNBLANK: + pr_debug("fb%d: unblank\n", info->node); + svga_wcrt_mask(0x36, 0x00, 0x30); + svga_wseq_mask(0x01, 0x00, 0x20); + break; + case FB_BLANK_NORMAL: + pr_debug("fb%d: blank\n", info->node); + svga_wcrt_mask(0x36, 0x00, 0x30); + svga_wseq_mask(0x01, 0x20, 0x20); + break; + case FB_BLANK_HSYNC_SUSPEND: + pr_debug("fb%d: DPMS standby (hsync off)\n", info->node); + svga_wcrt_mask(0x36, 0x10, 0x30); + svga_wseq_mask(0x01, 0x20, 0x20); + break; + case FB_BLANK_VSYNC_SUSPEND: + pr_debug("fb%d: DPMS suspend (vsync off)\n", info->node); + svga_wcrt_mask(0x36, 0x20, 0x30); + svga_wseq_mask(0x01, 0x20, 0x20); + break; + case FB_BLANK_POWERDOWN: + pr_debug("fb%d: DPMS off (no sync)\n", info->node); + svga_wcrt_mask(0x36, 0x30, 0x30); + svga_wseq_mask(0x01, 0x20, 0x20); + break; + } + + return 0; +} + + +static int vt8623fb_pan_display(struct fb_var_screeninfo *var, struct fb_info *info) +{ + unsigned int offset; + + /* Calculate the offset */ + if (var->bits_per_pixel == 0) { + offset = (var->yoffset / 16) * var->xres_virtual + var->xoffset; + offset = offset >> 3; + } else { + offset = (var->yoffset * info->fix.line_length) + + (var->xoffset * var->bits_per_pixel / 8); + offset = offset >> ((var->bits_per_pixel == 4) ? 2 : 1); + } + + /* Set the offset */ + svga_wcrt_multi(vt8623_start_address_regs, offset); + + return 0; +} + + +/* ------------------------------------------------------------------------- */ + + +/* Frame buffer operations */ + +static struct fb_ops vt8623fb_ops = { + .owner = THIS_MODULE, + .fb_open = vt8623fb_open, + .fb_release = vt8623fb_release, + .fb_check_var = vt8623fb_check_var, + .fb_set_par = vt8623fb_set_par, + .fb_setcolreg = vt8623fb_setcolreg, + .fb_blank = vt8623fb_blank, + .fb_pan_display = vt8623fb_pan_display, + .fb_fillrect = vt8623fb_fillrect, + .fb_copyarea = cfb_copyarea, + .fb_imageblit = vt8623fb_imageblit, + .fb_get_caps = svga_get_caps, +}; + + +/* PCI probe */ + +static int __devinit vt8623_pci_probe(struct pci_dev *dev, const struct pci_device_id *id) +{ + struct fb_info *info; + struct vt8623fb_info *par; + unsigned int memsize1, memsize2; + int rc; + + /* Ignore secondary VGA device because there is no VGA arbitration */ + if (! svga_primary_device(dev)) { + dev_info(&(dev->dev), "ignoring secondary device\n"); + return -ENODEV; + } + + /* Allocate and fill driver data structure */ + info = framebuffer_alloc(sizeof(struct vt8623fb_info), NULL); + if (! info) { + dev_err(&(dev->dev), "cannot allocate memory\n"); + return -ENOMEM; + } + + par = info->par; + mutex_init(&par->open_lock); + + info->flags = FBINFO_PARTIAL_PAN_OK | FBINFO_HWACCEL_YPAN; + info->fbops = &vt8623fb_ops; + + /* Prepare PCI device */ + + rc = pci_enable_device(dev); + if (rc < 0) { + dev_err(&(dev->dev), "cannot enable PCI device\n"); + goto err_enable_device; + } + + rc = pci_request_regions(dev, "vt8623fb"); + if (rc < 0) { + dev_err(&(dev->dev), "cannot reserve framebuffer region\n"); + goto err_request_regions; + } + + info->fix.smem_start = pci_resource_start(dev, 0); + info->fix.smem_len = pci_resource_len(dev, 0); + info->fix.mmio_start = pci_resource_start(dev, 1); + info->fix.mmio_len = pci_resource_len(dev, 1); + + /* Map physical IO memory address into kernel space */ + info->screen_base = pci_iomap(dev, 0, 0); + if (! info->screen_base) { + rc = -ENOMEM; + dev_err(&(dev->dev), "iomap for framebuffer failed\n"); + goto err_iomap_1; + } + + par->mmio_base = pci_iomap(dev, 1, 0); + if (! par->mmio_base) { + rc = -ENOMEM; + dev_err(&(dev->dev), "iomap for MMIO failed\n"); + goto err_iomap_2; + } + + /* Find how many physical memory there is on card */ + memsize1 = (vga_rseq(NULL, 0x34) + 1) >> 1; + memsize2 = vga_rseq(NULL, 0x39) << 2; + + if ((16 <= memsize1) && (memsize1 <= 64) && (memsize1 == memsize2)) + info->screen_size = memsize1 << 20; + else { + dev_err(&(dev->dev), "memory size detection failed (%x %x), suppose 16 MB\n", memsize1, memsize2); + info->screen_size = 16 << 20; + } + + info->fix.smem_len = info->screen_size; + strcpy(info->fix.id, "VIA VT8623"); + info->fix.type = FB_TYPE_PACKED_PIXELS; + info->fix.visual = FB_VISUAL_PSEUDOCOLOR; + info->fix.ypanstep = 0; + info->fix.accel = FB_ACCEL_NONE; + info->pseudo_palette = (void*)par->pseudo_palette; + + /* Prepare startup mode */ + + rc = fb_find_mode(&(info->var), info, mode, NULL, 0, NULL, 8); + if (! ((rc == 1) || (rc == 2))) { + rc = -EINVAL; + dev_err(&(dev->dev), "mode %s not found\n", mode); + goto err_find_mode; + } + + rc = fb_alloc_cmap(&info->cmap, 256, 0); + if (rc < 0) { + dev_err(&(dev->dev), "cannot allocate colormap\n"); + goto err_alloc_cmap; + } + + rc = register_framebuffer(info); + if (rc < 0) { + dev_err(&(dev->dev), "cannot register framebugger\n"); + goto err_reg_fb; + } + + printk(KERN_INFO "fb%d: %s on %s, %d MB RAM\n", info->node, info->fix.id, + pci_name(dev), info->fix.smem_len >> 20); + + /* Record a reference to the driver data */ + pci_set_drvdata(dev, info); + +#ifdef CONFIG_MTRR + if (mtrr) { + par->mtrr_reg = -1; + par->mtrr_reg = mtrr_add(info->fix.smem_start, info->fix.smem_len, MTRR_TYPE_WRCOMB, 1); + } +#endif + + return 0; + + /* Error handling */ +err_reg_fb: + fb_dealloc_cmap(&info->cmap); +err_alloc_cmap: +err_find_mode: + pci_iounmap(dev, par->mmio_base); +err_iomap_2: + pci_iounmap(dev, info->screen_base); +err_iomap_1: + pci_release_regions(dev); +err_request_regions: +/* pci_disable_device(dev); */ +err_enable_device: + framebuffer_release(info); + return rc; +} + +/* PCI remove */ + +static void __devexit vt8623_pci_remove(struct pci_dev *dev) +{ + struct fb_info *info = pci_get_drvdata(dev); + struct vt8623fb_info *par = info->par; + + if (info) { +#ifdef CONFIG_MTRR + if (par->mtrr_reg >= 0) { + mtrr_del(par->mtrr_reg, 0, 0); + par->mtrr_reg = -1; + } +#endif + + unregister_framebuffer(info); + fb_dealloc_cmap(&info->cmap); + + pci_iounmap(dev, info->screen_base); + pci_iounmap(dev, par->mmio_base); + pci_release_regions(dev); +/* pci_disable_device(dev); */ + + pci_set_drvdata(dev, NULL); + framebuffer_release(info); + } +} + + +#ifdef CONFIG_PM +/* PCI suspend */ + +static int vt8623_pci_suspend(struct pci_dev* dev, pm_message_t state) +{ + struct fb_info *info = pci_get_drvdata(dev); + struct vt8623fb_info *par = info->par; + + dev_info(&(dev->dev), "suspend\n"); + + acquire_console_sem(); + mutex_lock(&(par->open_lock)); + + if ((state.event == PM_EVENT_FREEZE) || (par->ref_count == 0)) { + mutex_unlock(&(par->open_lock)); + release_console_sem(); + return 0; + } + + fb_set_suspend(info, 1); + + pci_save_state(dev); + pci_disable_device(dev); + pci_set_power_state(dev, pci_choose_state(dev, state)); + + mutex_unlock(&(par->open_lock)); + release_console_sem(); + + return 0; +} + + +/* PCI resume */ + +static int vt8623_pci_resume(struct pci_dev* dev) +{ + struct fb_info *info = pci_get_drvdata(dev); + struct vt8623fb_info *par = info->par; + + dev_info(&(dev->dev), "resume\n"); + + acquire_console_sem(); + mutex_lock(&(par->open_lock)); + + if (par->ref_count == 0) { + mutex_unlock(&(par->open_lock)); + release_console_sem(); + return 0; + } + + pci_set_power_state(dev, PCI_D0); + pci_restore_state(dev); + + if (pci_enable_device(dev)) + goto fail; + + pci_set_master(dev); + + vt8623fb_set_par(info); + fb_set_suspend(info, 0); + + mutex_unlock(&(par->open_lock)); +fail: + release_console_sem(); + + return 0; +} +#else +#define vt8623_pci_suspend NULL +#define vt8623_pci_resume NULL +#endif /* CONFIG_PM */ + +/* List of boards that we are trying to support */ + +static struct pci_device_id vt8623_devices[] __devinitdata = { + {PCI_DEVICE(PCI_VENDOR_ID_VIA, 0x3122)}, + {0, 0, 0, 0, 0, 0, 0} +}; + +MODULE_DEVICE_TABLE(pci, vt8623_devices); + +static struct pci_driver vt8623fb_pci_driver = { + .name = "vt8623fb", + .id_table = vt8623_devices, + .probe = vt8623_pci_probe, + .remove = __devexit_p(vt8623_pci_remove), + .suspend = vt8623_pci_suspend, + .resume = vt8623_pci_resume, +}; + +/* Cleanup */ + +static void __exit vt8623fb_cleanup(void) +{ + pr_debug("vt8623fb: cleaning up\n"); + pci_unregister_driver(&vt8623fb_pci_driver); +} + +/* Driver Initialisation */ + +int __init vt8623fb_init(void) +{ + +#ifndef MODULE + char *option = NULL; + + if (fb_get_options("vt8623fb", &option)) + return -ENODEV; + + if (option && *option) + mode = option; +#endif + + pr_debug("vt8623fb: initializing\n"); + return pci_register_driver(&vt8623fb_pci_driver); +} + +/* ------------------------------------------------------------------------- */ + +/* Modularization */ + +module_init(vt8623fb_init); +module_exit(vt8623fb_cleanup); diff --git a/fs/Kconfig b/fs/Kconfig index 4622dabb2253..0fa0c1193e81 100644 --- a/fs/Kconfig +++ b/fs/Kconfig @@ -724,10 +724,6 @@ config FAT_FS file system and use GNU tar's M option. GNU tar is a program available for Unix and DOS ("man tar" or "info tar"). - It is now also becoming possible to read and write compressed FAT - file systems; read <file:Documentation/filesystems/fat_cvf.txt> for - details. - The FAT support will enlarge your kernel by about 37 KB. If unsure, say Y. diff --git a/fs/affs/file.c b/fs/affs/file.c index 4aa8079e71be..c8796906f584 100644 --- a/fs/affs/file.c +++ b/fs/affs/file.c @@ -628,11 +628,7 @@ static int affs_prepare_write_ofs(struct file *file, struct page *page, unsigned return err; } if (to < PAGE_CACHE_SIZE) { - char *kaddr = kmap_atomic(page, KM_USER0); - - memset(kaddr + to, 0, PAGE_CACHE_SIZE - to); - flush_dcache_page(page); - kunmap_atomic(kaddr, KM_USER0); + zero_user_page(page, to, PAGE_CACHE_SIZE - to, KM_USER0); if (size > offset + to) { if (size < offset + PAGE_CACHE_SIZE) tmp = size & ~PAGE_CACHE_MASK; diff --git a/fs/afs/Makefile b/fs/afs/Makefile index cf83e5d63512..73ce561f3ea0 100644 --- a/fs/afs/Makefile +++ b/fs/afs/Makefile @@ -22,6 +22,7 @@ kafs-objs := \ vlclient.o \ vlocation.o \ vnode.o \ - volume.o + volume.o \ + write.o obj-$(CONFIG_AFS_FS) := kafs.o diff --git a/fs/afs/afs_fs.h b/fs/afs/afs_fs.h index 89e0d1650a72..2198006d2d03 100644 --- a/fs/afs/afs_fs.h +++ b/fs/afs/afs_fs.h @@ -18,6 +18,8 @@ enum AFS_FS_Operations { FSFETCHDATA = 130, /* AFS Fetch file data */ FSFETCHSTATUS = 132, /* AFS Fetch file status */ + FSSTOREDATA = 133, /* AFS Store file data */ + FSSTORESTATUS = 135, /* AFS Store file status */ FSREMOVEFILE = 136, /* AFS Remove a file */ FSCREATEFILE = 137, /* AFS Create a file */ FSRENAME = 138, /* AFS Rename or move a file or directory */ diff --git a/fs/afs/callback.c b/fs/afs/callback.c index 9bdbf36a9aa9..f64e40fefc02 100644 --- a/fs/afs/callback.c +++ b/fs/afs/callback.c @@ -44,7 +44,7 @@ void afs_init_callback_state(struct afs_server *server) while (!RB_EMPTY_ROOT(&server->cb_promises)) { vnode = rb_entry(server->cb_promises.rb_node, struct afs_vnode, cb_promise); - _debug("UNPROMISE { vid=%x vn=%u uq=%u}", + _debug("UNPROMISE { vid=%x:%u uq=%u}", vnode->fid.vid, vnode->fid.vnode, vnode->fid.unique); rb_erase(&vnode->cb_promise, &server->cb_promises); vnode->cb_promised = false; @@ -84,11 +84,8 @@ void afs_broken_callback_work(struct work_struct *work) /* if the vnode's data version number changed then its contents * are different */ - if (test_and_clear_bit(AFS_VNODE_ZAP_DATA, &vnode->flags)) { - _debug("zap data {%x:%u}", - vnode->fid.vid, vnode->fid.vnode); - invalidate_remote_inode(&vnode->vfs_inode); - } + if (test_and_clear_bit(AFS_VNODE_ZAP_DATA, &vnode->flags)) + afs_zap_data(vnode); } out: diff --git a/fs/afs/dir.c b/fs/afs/dir.c index 0c1e902f17a3..2fb31276196b 100644 --- a/fs/afs/dir.c +++ b/fs/afs/dir.c @@ -55,7 +55,8 @@ const struct inode_operations afs_dir_inode_operations = { .rmdir = afs_rmdir, .rename = afs_rename, .permission = afs_permission, - .getattr = afs_inode_getattr, + .getattr = afs_getattr, + .setattr = afs_setattr, }; static struct dentry_operations afs_fs_dentry_operations = { @@ -491,7 +492,7 @@ static struct dentry *afs_lookup(struct inode *dir, struct dentry *dentry, vnode = AFS_FS_I(dir); - _enter("{%x:%d},%p{%s},", + _enter("{%x:%u},%p{%s},", vnode->fid.vid, vnode->fid.vnode, dentry, dentry->d_name.name); ASSERTCMP(dentry->d_inode, ==, NULL); @@ -731,7 +732,7 @@ static int afs_mkdir(struct inode *dir, struct dentry *dentry, int mode) dvnode = AFS_FS_I(dir); - _enter("{%x:%d},{%s},%o", + _enter("{%x:%u},{%s},%o", dvnode->fid.vid, dvnode->fid.vnode, dentry->d_name.name, mode); ret = -ENAMETOOLONG; @@ -796,7 +797,7 @@ static int afs_rmdir(struct inode *dir, struct dentry *dentry) dvnode = AFS_FS_I(dir); - _enter("{%x:%d},{%s}", + _enter("{%x:%u},{%s}", dvnode->fid.vid, dvnode->fid.vnode, dentry->d_name.name); ret = -ENAMETOOLONG; @@ -842,7 +843,7 @@ static int afs_unlink(struct inode *dir, struct dentry *dentry) dvnode = AFS_FS_I(dir); - _enter("{%x:%d},{%s}", + _enter("{%x:%u},{%s}", dvnode->fid.vid, dvnode->fid.vnode, dentry->d_name.name); ret = -ENAMETOOLONG; @@ -916,7 +917,7 @@ static int afs_create(struct inode *dir, struct dentry *dentry, int mode, dvnode = AFS_FS_I(dir); - _enter("{%x:%d},{%s},%o,", + _enter("{%x:%u},{%s},%o,", dvnode->fid.vid, dvnode->fid.vnode, dentry->d_name.name, mode); ret = -ENAMETOOLONG; @@ -983,7 +984,7 @@ static int afs_link(struct dentry *from, struct inode *dir, vnode = AFS_FS_I(from->d_inode); dvnode = AFS_FS_I(dir); - _enter("{%x:%d},{%x:%d},{%s}", + _enter("{%x:%u},{%x:%u},{%s}", vnode->fid.vid, vnode->fid.vnode, dvnode->fid.vid, dvnode->fid.vnode, dentry->d_name.name); @@ -1032,7 +1033,7 @@ static int afs_symlink(struct inode *dir, struct dentry *dentry, dvnode = AFS_FS_I(dir); - _enter("{%x:%d},{%s},%s", + _enter("{%x:%u},{%s},%s", dvnode->fid.vid, dvnode->fid.vnode, dentry->d_name.name, content); @@ -1104,7 +1105,7 @@ static int afs_rename(struct inode *old_dir, struct dentry *old_dentry, orig_dvnode = AFS_FS_I(old_dir); new_dvnode = AFS_FS_I(new_dir); - _enter("{%x:%d},{%x:%d},{%x:%d},{%s}", + _enter("{%x:%u},{%x:%u},{%x:%u},{%s}", orig_dvnode->fid.vid, orig_dvnode->fid.vnode, vnode->fid.vid, vnode->fid.vnode, new_dvnode->fid.vid, new_dvnode->fid.vnode, diff --git a/fs/afs/file.c b/fs/afs/file.c index ae256498f4f7..3e25795e5a42 100644 --- a/fs/afs/file.c +++ b/fs/afs/file.c @@ -15,32 +15,43 @@ #include <linux/slab.h> #include <linux/fs.h> #include <linux/pagemap.h> +#include <linux/writeback.h> #include "internal.h" -static int afs_file_readpage(struct file *file, struct page *page); -static void afs_file_invalidatepage(struct page *page, unsigned long offset); -static int afs_file_releasepage(struct page *page, gfp_t gfp_flags); +static int afs_readpage(struct file *file, struct page *page); +static void afs_invalidatepage(struct page *page, unsigned long offset); +static int afs_releasepage(struct page *page, gfp_t gfp_flags); +static int afs_launder_page(struct page *page); const struct file_operations afs_file_operations = { .open = afs_open, .release = afs_release, .llseek = generic_file_llseek, .read = do_sync_read, + .write = do_sync_write, .aio_read = generic_file_aio_read, + .aio_write = afs_file_write, .mmap = generic_file_readonly_mmap, .sendfile = generic_file_sendfile, + .fsync = afs_fsync, }; const struct inode_operations afs_file_inode_operations = { - .getattr = afs_inode_getattr, + .getattr = afs_getattr, + .setattr = afs_setattr, .permission = afs_permission, }; const struct address_space_operations afs_fs_aops = { - .readpage = afs_file_readpage, - .set_page_dirty = __set_page_dirty_nobuffers, - .releasepage = afs_file_releasepage, - .invalidatepage = afs_file_invalidatepage, + .readpage = afs_readpage, + .set_page_dirty = afs_set_page_dirty, + .launder_page = afs_launder_page, + .releasepage = afs_releasepage, + .invalidatepage = afs_invalidatepage, + .prepare_write = afs_prepare_write, + .commit_write = afs_commit_write, + .writepage = afs_writepage, + .writepages = afs_writepages, }; /* @@ -52,7 +63,7 @@ int afs_open(struct inode *inode, struct file *file) struct key *key; int ret; - _enter("{%x:%x},", vnode->fid.vid, vnode->fid.vnode); + _enter("{%x:%u},", vnode->fid.vid, vnode->fid.vnode); key = afs_request_key(vnode->volume->cell); if (IS_ERR(key)) { @@ -78,7 +89,7 @@ int afs_release(struct inode *inode, struct file *file) { struct afs_vnode *vnode = AFS_FS_I(inode); - _enter("{%x:%x},", vnode->fid.vid, vnode->fid.vnode); + _enter("{%x:%u},", vnode->fid.vid, vnode->fid.vnode); key_put(file->private_data); _leave(" = 0"); @@ -89,10 +100,10 @@ int afs_release(struct inode *inode, struct file *file) * deal with notification that a page was read from the cache */ #ifdef AFS_CACHING_SUPPORT -static void afs_file_readpage_read_complete(void *cookie_data, - struct page *page, - void *data, - int error) +static void afs_readpage_read_complete(void *cookie_data, + struct page *page, + void *data, + int error) { _enter("%p,%p,%p,%d", cookie_data, page, data, error); @@ -109,10 +120,10 @@ static void afs_file_readpage_read_complete(void *cookie_data, * deal with notification that a page was written to the cache */ #ifdef AFS_CACHING_SUPPORT -static void afs_file_readpage_write_complete(void *cookie_data, - struct page *page, - void *data, - int error) +static void afs_readpage_write_complete(void *cookie_data, + struct page *page, + void *data, + int error) { _enter("%p,%p,%p,%d", cookie_data, page, data, error); @@ -121,9 +132,9 @@ static void afs_file_readpage_write_complete(void *cookie_data, #endif /* - * AFS read page from file (or symlink) + * AFS read page from file, directory or symlink */ -static int afs_file_readpage(struct file *file, struct page *page) +static int afs_readpage(struct file *file, struct page *page) { struct afs_vnode *vnode; struct inode *inode; @@ -219,39 +230,17 @@ error: } /* - * get a page cookie for the specified page - */ -#ifdef AFS_CACHING_SUPPORT -int afs_cache_get_page_cookie(struct page *page, - struct cachefs_page **_page_cookie) -{ - int ret; - - _enter(""); - ret = cachefs_page_get_private(page,_page_cookie, GFP_NOIO); - - _leave(" = %d", ret); - return ret; -} -#endif - -/* * invalidate part or all of a page */ -static void afs_file_invalidatepage(struct page *page, unsigned long offset) +static void afs_invalidatepage(struct page *page, unsigned long offset) { int ret = 1; - _enter("{%lu},%lu", page->index, offset); + kenter("{%lu},%lu", page->index, offset); BUG_ON(!PageLocked(page)); if (PagePrivate(page)) { -#ifdef AFS_CACHING_SUPPORT - struct afs_vnode *vnode = AFS_FS_I(page->mapping->host); - cachefs_uncache_page(vnode->cache,page); -#endif - /* We release buffers only if the entire page is being * invalidated. * The get_block cached value has been unconditionally @@ -272,25 +261,33 @@ static void afs_file_invalidatepage(struct page *page, unsigned long offset) } /* + * write back a dirty page + */ +static int afs_launder_page(struct page *page) +{ + _enter("{%lu}", page->index); + + return 0; +} + +/* * release a page and cleanup its private data */ -static int afs_file_releasepage(struct page *page, gfp_t gfp_flags) +static int afs_releasepage(struct page *page, gfp_t gfp_flags) { - struct cachefs_page *pageio; + struct afs_vnode *vnode = AFS_FS_I(page->mapping->host); + struct afs_writeback *wb; - _enter("{%lu},%x", page->index, gfp_flags); + _enter("{{%x:%u}[%lu],%lx},%x", + vnode->fid.vid, vnode->fid.vnode, page->index, page->flags, + gfp_flags); if (PagePrivate(page)) { -#ifdef AFS_CACHING_SUPPORT - struct afs_vnode *vnode = AFS_FS_I(page->mapping->host); - cachefs_uncache_page(vnode->cache, page); -#endif - - pageio = (struct cachefs_page *) page_private(page); + wb = (struct afs_writeback *) page_private(page); + ASSERT(wb != NULL); set_page_private(page, 0); ClearPagePrivate(page); - - kfree(pageio); + afs_put_writeback(wb); } _leave(" = 0"); diff --git a/fs/afs/fsclient.c b/fs/afs/fsclient.c index e54e6c2ad343..025b1903d9e1 100644 --- a/fs/afs/fsclient.c +++ b/fs/afs/fsclient.c @@ -33,8 +33,10 @@ static void xdr_decode_AFSFid(const __be32 **_bp, struct afs_fid *fid) */ static void xdr_decode_AFSFetchStatus(const __be32 **_bp, struct afs_file_status *status, - struct afs_vnode *vnode) + struct afs_vnode *vnode, + afs_dataversion_t *store_version) { + afs_dataversion_t expected_version; const __be32 *bp = *_bp; umode_t mode; u64 data_version, size; @@ -101,7 +103,11 @@ static void xdr_decode_AFSFetchStatus(const __be32 **_bp, vnode->vfs_inode.i_atime = vnode->vfs_inode.i_ctime; } - if (status->data_version != data_version) { + expected_version = status->data_version; + if (store_version) + expected_version = *store_version; + + if (expected_version != data_version) { status->data_version = data_version; if (vnode && !test_bit(AFS_VNODE_UNSET, &vnode->flags)) { _debug("vnode modified %llx on {%x:%u}", @@ -110,6 +116,8 @@ static void xdr_decode_AFSFetchStatus(const __be32 **_bp, set_bit(AFS_VNODE_MODIFIED, &vnode->flags); set_bit(AFS_VNODE_ZAP_DATA, &vnode->flags); } + } else if (store_version) { + status->data_version = data_version; } } @@ -156,6 +164,44 @@ static void xdr_decode_AFSVolSync(const __be32 **_bp, } /* + * encode the requested attributes into an AFSStoreStatus block + */ +static void xdr_encode_AFS_StoreStatus(__be32 **_bp, struct iattr *attr) +{ + __be32 *bp = *_bp; + u32 mask = 0, mtime = 0, owner = 0, group = 0, mode = 0; + + mask = 0; + if (attr->ia_valid & ATTR_MTIME) { + mask |= AFS_SET_MTIME; + mtime = attr->ia_mtime.tv_sec; + } + + if (attr->ia_valid & ATTR_UID) { + mask |= AFS_SET_OWNER; + owner = attr->ia_uid; + } + + if (attr->ia_valid & ATTR_GID) { + mask |= AFS_SET_GROUP; + group = attr->ia_gid; + } + + if (attr->ia_valid & ATTR_MODE) { + mask |= AFS_SET_MODE; + mode = attr->ia_mode & S_IALLUGO; + } + + *bp++ = htonl(mask); + *bp++ = htonl(mtime); + *bp++ = htonl(owner); + *bp++ = htonl(group); + *bp++ = htonl(mode); + *bp++ = 0; /* segment size */ + *_bp = bp; +} + +/* * deliver reply data to an FS.FetchStatus */ static int afs_deliver_fs_fetch_status(struct afs_call *call, @@ -175,7 +221,7 @@ static int afs_deliver_fs_fetch_status(struct afs_call *call, /* unmarshall the reply once we've received all of it */ bp = call->buffer; - xdr_decode_AFSFetchStatus(&bp, &vnode->status, vnode); + xdr_decode_AFSFetchStatus(&bp, &vnode->status, vnode, NULL); xdr_decode_AFSCallBack(&bp, vnode); if (call->reply2) xdr_decode_AFSVolSync(&bp, call->reply2); @@ -206,7 +252,7 @@ int afs_fs_fetch_file_status(struct afs_server *server, struct afs_call *call; __be32 *bp; - _enter(",%x,{%x:%d},,", + _enter(",%x,{%x:%u},,", key_serial(key), vnode->fid.vid, vnode->fid.vnode); call = afs_alloc_flat_call(&afs_RXFSFetchStatus, 16, (21 + 3 + 6) * 4); @@ -265,25 +311,20 @@ static int afs_deliver_fs_fetch_data(struct afs_call *call, call->offset = 0; call->unmarshall++; - if (call->count < PAGE_SIZE) { - page = call->reply3; - buffer = kmap_atomic(page, KM_USER0); - memset(buffer + PAGE_SIZE - call->count, 0, - call->count); - kunmap_atomic(buffer, KM_USER0); - } - /* extract the returned data */ case 2: _debug("extract data"); - page = call->reply3; - buffer = kmap_atomic(page, KM_USER0); - ret = afs_extract_data(call, skb, last, buffer, call->count); - kunmap_atomic(buffer, KM_USER0); - switch (ret) { - case 0: break; - case -EAGAIN: return 0; - default: return ret; + if (call->count > 0) { + page = call->reply3; + buffer = kmap_atomic(page, KM_USER0); + ret = afs_extract_data(call, skb, last, buffer, + call->count); + kunmap_atomic(buffer, KM_USER0); + switch (ret) { + case 0: break; + case -EAGAIN: return 0; + default: return ret; + } } call->offset = 0; @@ -300,7 +341,7 @@ static int afs_deliver_fs_fetch_data(struct afs_call *call, } bp = call->buffer; - xdr_decode_AFSFetchStatus(&bp, &vnode->status, vnode); + xdr_decode_AFSFetchStatus(&bp, &vnode->status, vnode, NULL); xdr_decode_AFSCallBack(&bp, vnode); if (call->reply2) xdr_decode_AFSVolSync(&bp, call->reply2); @@ -318,6 +359,14 @@ static int afs_deliver_fs_fetch_data(struct afs_call *call, if (!last) return 0; + if (call->count < PAGE_SIZE) { + _debug("clear"); + page = call->reply3; + buffer = kmap_atomic(page, KM_USER0); + memset(buffer + call->count, 0, PAGE_SIZE - call->count); + kunmap_atomic(buffer, KM_USER0); + } + _leave(" = 0 [done]"); return 0; } @@ -476,8 +525,8 @@ static int afs_deliver_fs_create_vnode(struct afs_call *call, /* unmarshall the reply once we've received all of it */ bp = call->buffer; xdr_decode_AFSFid(&bp, call->reply2); - xdr_decode_AFSFetchStatus(&bp, call->reply3, NULL); - xdr_decode_AFSFetchStatus(&bp, &vnode->status, vnode); + xdr_decode_AFSFetchStatus(&bp, call->reply3, NULL, NULL); + xdr_decode_AFSFetchStatus(&bp, &vnode->status, vnode, NULL); xdr_decode_AFSCallBack_raw(&bp, call->reply4); /* xdr_decode_AFSVolSync(&bp, call->replyX); */ @@ -574,7 +623,7 @@ static int afs_deliver_fs_remove(struct afs_call *call, /* unmarshall the reply once we've received all of it */ bp = call->buffer; - xdr_decode_AFSFetchStatus(&bp, &vnode->status, vnode); + xdr_decode_AFSFetchStatus(&bp, &vnode->status, vnode, NULL); /* xdr_decode_AFSVolSync(&bp, call->replyX); */ _leave(" = 0 [done]"); @@ -657,8 +706,8 @@ static int afs_deliver_fs_link(struct afs_call *call, /* unmarshall the reply once we've received all of it */ bp = call->buffer; - xdr_decode_AFSFetchStatus(&bp, &vnode->status, vnode); - xdr_decode_AFSFetchStatus(&bp, &dvnode->status, dvnode); + xdr_decode_AFSFetchStatus(&bp, &vnode->status, vnode, NULL); + xdr_decode_AFSFetchStatus(&bp, &dvnode->status, dvnode, NULL); /* xdr_decode_AFSVolSync(&bp, call->replyX); */ _leave(" = 0 [done]"); @@ -746,8 +795,8 @@ static int afs_deliver_fs_symlink(struct afs_call *call, /* unmarshall the reply once we've received all of it */ bp = call->buffer; xdr_decode_AFSFid(&bp, call->reply2); - xdr_decode_AFSFetchStatus(&bp, call->reply3, NULL); - xdr_decode_AFSFetchStatus(&bp, &vnode->status, vnode); + xdr_decode_AFSFetchStatus(&bp, call->reply3, NULL, NULL); + xdr_decode_AFSFetchStatus(&bp, &vnode->status, vnode, NULL); /* xdr_decode_AFSVolSync(&bp, call->replyX); */ _leave(" = 0 [done]"); @@ -852,9 +901,10 @@ static int afs_deliver_fs_rename(struct afs_call *call, /* unmarshall the reply once we've received all of it */ bp = call->buffer; - xdr_decode_AFSFetchStatus(&bp, &orig_dvnode->status, orig_dvnode); + xdr_decode_AFSFetchStatus(&bp, &orig_dvnode->status, orig_dvnode, NULL); if (new_dvnode != orig_dvnode) - xdr_decode_AFSFetchStatus(&bp, &new_dvnode->status, new_dvnode); + xdr_decode_AFSFetchStatus(&bp, &new_dvnode->status, new_dvnode, + NULL); /* xdr_decode_AFSVolSync(&bp, call->replyX); */ _leave(" = 0 [done]"); @@ -936,3 +986,262 @@ int afs_fs_rename(struct afs_server *server, return afs_make_call(&server->addr, call, GFP_NOFS, wait_mode); } + +/* + * deliver reply data to an FS.StoreData + */ +static int afs_deliver_fs_store_data(struct afs_call *call, + struct sk_buff *skb, bool last) +{ + struct afs_vnode *vnode = call->reply; + const __be32 *bp; + + _enter(",,%u", last); + + afs_transfer_reply(call, skb); + if (!last) { + _leave(" = 0 [more]"); + return 0; + } + + if (call->reply_size != call->reply_max) { + _leave(" = -EBADMSG [%u != %u]", + call->reply_size, call->reply_max); + return -EBADMSG; + } + + /* unmarshall the reply once we've received all of it */ + bp = call->buffer; + xdr_decode_AFSFetchStatus(&bp, &vnode->status, vnode, + &call->store_version); + /* xdr_decode_AFSVolSync(&bp, call->replyX); */ + + afs_pages_written_back(vnode, call); + + _leave(" = 0 [done]"); + return 0; +} + +/* + * FS.StoreData operation type + */ +static const struct afs_call_type afs_RXFSStoreData = { + .name = "FS.StoreData", + .deliver = afs_deliver_fs_store_data, + .abort_to_error = afs_abort_to_error, + .destructor = afs_flat_call_destructor, +}; + +/* + * store a set of pages + */ +int afs_fs_store_data(struct afs_server *server, struct afs_writeback *wb, + pgoff_t first, pgoff_t last, + unsigned offset, unsigned to, + const struct afs_wait_mode *wait_mode) +{ + struct afs_vnode *vnode = wb->vnode; + struct afs_call *call; + loff_t size, pos, i_size; + __be32 *bp; + + _enter(",%x,{%x:%u},,", + key_serial(wb->key), vnode->fid.vid, vnode->fid.vnode); + + size = to - offset; + if (first != last) + size += (loff_t)(last - first) << PAGE_SHIFT; + pos = (loff_t)first << PAGE_SHIFT; + pos += offset; + + i_size = i_size_read(&vnode->vfs_inode); + if (pos + size > i_size) + i_size = size + pos; + + _debug("size %llx, at %llx, i_size %llx", + (unsigned long long) size, (unsigned long long) pos, + (unsigned long long) i_size); + + BUG_ON(i_size > 0xffffffff); // TODO: use 64-bit store + + call = afs_alloc_flat_call(&afs_RXFSStoreData, + (4 + 6 + 3) * 4, + (21 + 6) * 4); + if (!call) + return -ENOMEM; + + call->wb = wb; + call->key = wb->key; + call->reply = vnode; + call->service_id = FS_SERVICE; + call->port = htons(AFS_FS_PORT); + call->mapping = vnode->vfs_inode.i_mapping; + call->first = first; + call->last = last; + call->first_offset = offset; + call->last_to = to; + call->send_pages = true; + call->store_version = vnode->status.data_version + 1; + + /* marshall the parameters */ + bp = call->request; + *bp++ = htonl(FSSTOREDATA); + *bp++ = htonl(vnode->fid.vid); + *bp++ = htonl(vnode->fid.vnode); + *bp++ = htonl(vnode->fid.unique); + + *bp++ = 0; /* mask */ + *bp++ = 0; /* mtime */ + *bp++ = 0; /* owner */ + *bp++ = 0; /* group */ + *bp++ = 0; /* unix mode */ + *bp++ = 0; /* segment size */ + + *bp++ = htonl(pos); + *bp++ = htonl(size); + *bp++ = htonl(i_size); + + return afs_make_call(&server->addr, call, GFP_NOFS, wait_mode); +} + +/* + * deliver reply data to an FS.StoreStatus + */ +static int afs_deliver_fs_store_status(struct afs_call *call, + struct sk_buff *skb, bool last) +{ + afs_dataversion_t *store_version; + struct afs_vnode *vnode = call->reply; + const __be32 *bp; + + _enter(",,%u", last); + + afs_transfer_reply(call, skb); + if (!last) { + _leave(" = 0 [more]"); + return 0; + } + + if (call->reply_size != call->reply_max) { + _leave(" = -EBADMSG [%u != %u]", + call->reply_size, call->reply_max); + return -EBADMSG; + } + + /* unmarshall the reply once we've received all of it */ + store_version = NULL; + if (call->operation_ID == FSSTOREDATA) + store_version = &call->store_version; + + bp = call->buffer; + xdr_decode_AFSFetchStatus(&bp, &vnode->status, vnode, store_version); + /* xdr_decode_AFSVolSync(&bp, call->replyX); */ + + _leave(" = 0 [done]"); + return 0; +} + +/* + * FS.StoreStatus operation type + */ +static const struct afs_call_type afs_RXFSStoreStatus = { + .name = "FS.StoreStatus", + .deliver = afs_deliver_fs_store_status, + .abort_to_error = afs_abort_to_error, + .destructor = afs_flat_call_destructor, +}; + +static const struct afs_call_type afs_RXFSStoreData_as_Status = { + .name = "FS.StoreData", + .deliver = afs_deliver_fs_store_status, + .abort_to_error = afs_abort_to_error, + .destructor = afs_flat_call_destructor, +}; + +/* + * set the attributes on a file, using FS.StoreData rather than FS.StoreStatus + * so as to alter the file size also + */ +static int afs_fs_setattr_size(struct afs_server *server, struct key *key, + struct afs_vnode *vnode, struct iattr *attr, + const struct afs_wait_mode *wait_mode) +{ + struct afs_call *call; + __be32 *bp; + + _enter(",%x,{%x:%u},,", + key_serial(key), vnode->fid.vid, vnode->fid.vnode); + + ASSERT(attr->ia_valid & ATTR_SIZE); + ASSERTCMP(attr->ia_size, <=, 0xffffffff); // TODO: use 64-bit store + + call = afs_alloc_flat_call(&afs_RXFSStoreData_as_Status, + (4 + 6 + 3) * 4, + (21 + 6) * 4); + if (!call) + return -ENOMEM; + + call->key = key; + call->reply = vnode; + call->service_id = FS_SERVICE; + call->port = htons(AFS_FS_PORT); + call->store_version = vnode->status.data_version + 1; + call->operation_ID = FSSTOREDATA; + + /* marshall the parameters */ + bp = call->request; + *bp++ = htonl(FSSTOREDATA); + *bp++ = htonl(vnode->fid.vid); + *bp++ = htonl(vnode->fid.vnode); + *bp++ = htonl(vnode->fid.unique); + + xdr_encode_AFS_StoreStatus(&bp, attr); + + *bp++ = 0; /* position of start of write */ + *bp++ = 0; /* size of write */ + *bp++ = htonl(attr->ia_size); /* new file length */ + + return afs_make_call(&server->addr, call, GFP_NOFS, wait_mode); +} + +/* + * set the attributes on a file, using FS.StoreData if there's a change in file + * size, and FS.StoreStatus otherwise + */ +int afs_fs_setattr(struct afs_server *server, struct key *key, + struct afs_vnode *vnode, struct iattr *attr, + const struct afs_wait_mode *wait_mode) +{ + struct afs_call *call; + __be32 *bp; + + if (attr->ia_valid & ATTR_SIZE) + return afs_fs_setattr_size(server, key, vnode, attr, + wait_mode); + + _enter(",%x,{%x:%u},,", + key_serial(key), vnode->fid.vid, vnode->fid.vnode); + + call = afs_alloc_flat_call(&afs_RXFSStoreStatus, + (4 + 6) * 4, + (21 + 6) * 4); + if (!call) + return -ENOMEM; + + call->key = key; + call->reply = vnode; + call->service_id = FS_SERVICE; + call->port = htons(AFS_FS_PORT); + call->operation_ID = FSSTORESTATUS; + + /* marshall the parameters */ + bp = call->request; + *bp++ = htonl(FSSTORESTATUS); + *bp++ = htonl(vnode->fid.vid); + *bp++ = htonl(vnode->fid.vnode); + *bp++ = htonl(vnode->fid.unique); + + xdr_encode_AFS_StoreStatus(&bp, attr); + + return afs_make_call(&server->addr, call, GFP_NOFS, wait_mode); +} diff --git a/fs/afs/inode.c b/fs/afs/inode.c index c184a4ee5995..515a5d12d8fb 100644 --- a/fs/afs/inode.c +++ b/fs/afs/inode.c @@ -125,7 +125,7 @@ struct inode *afs_iget(struct super_block *sb, struct key *key, struct inode *inode; int ret; - _enter(",{%u,%u,%u},,", fid->vid, fid->vnode, fid->unique); + _enter(",{%x:%u.%u},,", fid->vid, fid->vnode, fid->unique); as = sb->s_fs_info; data.volume = as->volume; @@ -204,6 +204,19 @@ bad_inode: } /* + * mark the data attached to an inode as obsolete due to a write on the server + * - might also want to ditch all the outstanding writes and dirty pages + */ +void afs_zap_data(struct afs_vnode *vnode) +{ + _enter("zap data {%x:%u}", vnode->fid.vid, vnode->fid.vnode); + + /* nuke all the non-dirty pages that aren't locked, mapped or being + * written back */ + invalidate_remote_inode(&vnode->vfs_inode); +} + +/* * validate a vnode/inode * - there are several things we need to check * - parent dir data changes (rm, rmdir, rename, mkdir, create, link, @@ -258,10 +271,8 @@ int afs_validate(struct afs_vnode *vnode, struct key *key) /* if the vnode's data version number changed then its contents are * different */ - if (test_and_clear_bit(AFS_VNODE_ZAP_DATA, &vnode->flags)) { - _debug("zap data {%x:%d}", vnode->fid.vid, vnode->fid.vnode); - invalidate_remote_inode(&vnode->vfs_inode); - } + if (test_and_clear_bit(AFS_VNODE_ZAP_DATA, &vnode->flags)) + afs_zap_data(vnode); clear_bit(AFS_VNODE_MODIFIED, &vnode->flags); mutex_unlock(&vnode->validate_lock); @@ -278,7 +289,7 @@ error_unlock: /* * read the attributes of an inode */ -int afs_inode_getattr(struct vfsmount *mnt, struct dentry *dentry, +int afs_getattr(struct vfsmount *mnt, struct dentry *dentry, struct kstat *stat) { struct inode *inode; @@ -301,7 +312,7 @@ void afs_clear_inode(struct inode *inode) vnode = AFS_FS_I(inode); - _enter("{%x:%d.%d} v=%u x=%u t=%u }", + _enter("{%x:%u.%d} v=%u x=%u t=%u }", vnode->fid.vid, vnode->fid.vnode, vnode->fid.unique, @@ -323,6 +334,7 @@ void afs_clear_inode(struct inode *inode) vnode->server = NULL; } + ASSERT(list_empty(&vnode->writebacks)); ASSERT(!vnode->cb_promised); #ifdef AFS_CACHING_SUPPORT @@ -339,3 +351,47 @@ void afs_clear_inode(struct inode *inode) _leave(""); } + +/* + * set the attributes of an inode + */ +int afs_setattr(struct dentry *dentry, struct iattr *attr) +{ + struct afs_vnode *vnode = AFS_FS_I(dentry->d_inode); + struct key *key; + int ret; + + _enter("{%x:%u},{n=%s},%x", + vnode->fid.vid, vnode->fid.vnode, dentry->d_name.name, + attr->ia_valid); + + if (!(attr->ia_valid & (ATTR_SIZE | ATTR_MODE | ATTR_UID | ATTR_GID | + ATTR_MTIME))) { + _leave(" = 0 [unsupported]"); + return 0; + } + + /* flush any dirty data outstanding on a regular file */ + if (S_ISREG(vnode->vfs_inode.i_mode)) { + filemap_write_and_wait(vnode->vfs_inode.i_mapping); + afs_writeback_all(vnode); + } + + if (attr->ia_valid & ATTR_FILE) { + key = attr->ia_file->private_data; + } else { + key = afs_request_key(vnode->volume->cell); + if (IS_ERR(key)) { + ret = PTR_ERR(key); + goto error; + } + } + + ret = afs_vnode_setattr(vnode, key, attr); + if (!(attr->ia_valid & ATTR_FILE)) + key_put(key); + +error: + _leave(" = %d", ret); + return ret; +} diff --git a/fs/afs/internal.h b/fs/afs/internal.h index d90c158cd934..a30d4fa768e3 100644 --- a/fs/afs/internal.h +++ b/fs/afs/internal.h @@ -21,6 +21,7 @@ #define AFS_CELL_MAX_ADDRS 15 +struct pagevec; struct afs_call; typedef enum { @@ -75,12 +76,15 @@ struct afs_call { struct key *key; /* security for this call */ struct afs_server *server; /* server affected by incoming CM call */ void *request; /* request data (first part) */ - void *request2; /* request data (second part) */ + struct address_space *mapping; /* page set */ + struct afs_writeback *wb; /* writeback being performed */ void *buffer; /* reply receive buffer */ void *reply; /* reply buffer (first part) */ void *reply2; /* reply buffer (second part) */ void *reply3; /* reply buffer (third part) */ void *reply4; /* reply buffer (fourth part) */ + pgoff_t first; /* first page in mapping to deal with */ + pgoff_t last; /* last page in mapping to deal with */ enum { /* call state */ AFS_CALL_REQUESTING, /* request is being sent for outgoing call */ AFS_CALL_AWAIT_REPLY, /* awaiting reply to outgoing call */ @@ -97,14 +101,18 @@ struct afs_call { unsigned request_size; /* size of request data */ unsigned reply_max; /* maximum size of reply */ unsigned reply_size; /* current size of reply */ + unsigned first_offset; /* offset into mapping[first] */ + unsigned last_to; /* amount of mapping[last] */ unsigned short offset; /* offset into received data store */ unsigned char unmarshall; /* unmarshalling phase */ bool incoming; /* T if incoming call */ + bool send_pages; /* T if data from mapping should be sent */ u16 service_id; /* RxRPC service ID to call */ __be16 port; /* target UDP port */ __be32 operation_ID; /* operation ID for an incoming call */ u32 count; /* count for use in unmarshalling */ __be32 tmp; /* place to extract temporary data */ + afs_dataversion_t store_version; /* updated version expected from store */ }; struct afs_call_type { @@ -124,6 +132,32 @@ struct afs_call_type { }; /* + * record of an outstanding writeback on a vnode + */ +struct afs_writeback { + struct list_head link; /* link in vnode->writebacks */ + struct work_struct writer; /* work item to perform the writeback */ + struct afs_vnode *vnode; /* vnode to which this write applies */ + struct key *key; /* owner of this write */ + wait_queue_head_t waitq; /* completion and ready wait queue */ + pgoff_t first; /* first page in batch */ + pgoff_t point; /* last page in current store op */ + pgoff_t last; /* last page in batch (inclusive) */ + unsigned offset_first; /* offset into first page of start of write */ + unsigned to_last; /* offset into last page of end of write */ + int num_conflicts; /* count of conflicting writes in list */ + int usage; + bool conflicts; /* T if has dependent conflicts */ + enum { + AFS_WBACK_SYNCING, /* synchronisation being performed */ + AFS_WBACK_PENDING, /* write pending */ + AFS_WBACK_CONFLICTING, /* conflicting writes posted */ + AFS_WBACK_WRITING, /* writing back */ + AFS_WBACK_COMPLETE /* the writeback record has been unlinked */ + } state __attribute__((packed)); +}; + +/* * AFS superblock private data * - there's one superblock per volume */ @@ -305,6 +339,7 @@ struct afs_vnode { wait_queue_head_t update_waitq; /* status fetch waitqueue */ int update_cnt; /* number of outstanding ops that will update the * status */ + spinlock_t writeback_lock; /* lock for writebacks */ spinlock_t lock; /* waitqueue/flags lock */ unsigned long flags; #define AFS_VNODE_CB_BROKEN 0 /* set if vnode's callback was broken */ @@ -316,6 +351,8 @@ struct afs_vnode { long acl_order; /* ACL check count (callback break count) */ + struct list_head writebacks; /* alterations in pagecache that need writing */ + /* outstanding callback notification on this file */ struct rb_node server_rb; /* link in server->fs_vnodes */ struct rb_node cb_promise; /* link in server->cb_promises */ @@ -433,10 +470,6 @@ extern const struct file_operations afs_file_operations; extern int afs_open(struct inode *, struct file *); extern int afs_release(struct inode *, struct file *); -#ifdef AFS_CACHING_SUPPORT -extern int afs_cache_get_page_cookie(struct page *, struct cachefs_page **); -#endif - /* * fsclient.c */ @@ -467,6 +500,12 @@ extern int afs_fs_rename(struct afs_server *, struct key *, struct afs_vnode *, const char *, struct afs_vnode *, const char *, const struct afs_wait_mode *); +extern int afs_fs_store_data(struct afs_server *, struct afs_writeback *, + pgoff_t, pgoff_t, unsigned, unsigned, + const struct afs_wait_mode *); +extern int afs_fs_setattr(struct afs_server *, struct key *, + struct afs_vnode *, struct iattr *, + const struct afs_wait_mode *); /* * inode.c @@ -474,10 +513,10 @@ extern int afs_fs_rename(struct afs_server *, struct key *, extern struct inode *afs_iget(struct super_block *, struct key *, struct afs_fid *, struct afs_file_status *, struct afs_callback *); +extern void afs_zap_data(struct afs_vnode *); extern int afs_validate(struct afs_vnode *, struct key *); -extern int afs_inode_getattr(struct vfsmount *, struct dentry *, - struct kstat *); -extern void afs_zap_permits(struct rcu_head *); +extern int afs_getattr(struct vfsmount *, struct dentry *, struct kstat *); +extern int afs_setattr(struct dentry *, struct iattr *); extern void afs_clear_inode(struct inode *); /* @@ -533,6 +572,7 @@ extern int afs_extract_data(struct afs_call *, struct sk_buff *, bool, void *, */ extern void afs_clear_permits(struct afs_vnode *); extern void afs_cache_permit(struct afs_vnode *, struct key *, long); +extern void afs_zap_permits(struct rcu_head *); extern struct key *afs_request_key(struct afs_cell *); extern int afs_permission(struct inode *, int, struct nameidata *); @@ -629,6 +669,9 @@ extern int afs_vnode_symlink(struct afs_vnode *, struct key *, const char *, struct afs_file_status *, struct afs_server **); extern int afs_vnode_rename(struct afs_vnode *, struct afs_vnode *, struct key *, const char *, const char *); +extern int afs_vnode_store_data(struct afs_writeback *, pgoff_t, pgoff_t, + unsigned, unsigned); +extern int afs_vnode_setattr(struct afs_vnode *, struct key *, struct iattr *); /* * volume.c @@ -645,6 +688,23 @@ extern struct afs_server *afs_volume_pick_fileserver(struct afs_vnode *); extern int afs_volume_release_fileserver(struct afs_vnode *, struct afs_server *, int); +/* + * write.c + */ +extern int afs_set_page_dirty(struct page *); +extern void afs_put_writeback(struct afs_writeback *); +extern int afs_prepare_write(struct file *, struct page *, unsigned, unsigned); +extern int afs_commit_write(struct file *, struct page *, unsigned, unsigned); +extern int afs_writepage(struct page *, struct writeback_control *); +extern int afs_writepages(struct address_space *, struct writeback_control *); +extern int afs_write_inode(struct inode *, int); +extern void afs_pages_written_back(struct afs_vnode *, struct afs_call *); +extern ssize_t afs_file_write(struct kiocb *, const struct iovec *, + unsigned long, loff_t); +extern int afs_writeback_all(struct afs_vnode *); +extern int afs_fsync(struct file *, struct dentry *, int); + + /*****************************************************************************/ /* * debug tracing @@ -726,6 +786,21 @@ do { \ } \ } while(0) +#define ASSERTRANGE(L, OP1, N, OP2, H) \ +do { \ + if (unlikely(!((L) OP1 (N)) || !((N) OP2 (H)))) { \ + printk(KERN_ERR "\n"); \ + printk(KERN_ERR "AFS: Assertion failed\n"); \ + printk(KERN_ERR "%lu "#OP1" %lu "#OP2" %lu is false\n", \ + (unsigned long)(L), (unsigned long)(N), \ + (unsigned long)(H)); \ + printk(KERN_ERR "0x%lx "#OP1" 0x%lx "#OP2" 0x%lx is false\n", \ + (unsigned long)(L), (unsigned long)(N), \ + (unsigned long)(H)); \ + BUG(); \ + } \ +} while(0) + #define ASSERTIF(C, X) \ do { \ if (unlikely((C) && !(X))) { \ @@ -758,6 +833,10 @@ do { \ do { \ } while(0) +#define ASSERTRANGE(L, OP1, N, OP2, H) \ +do { \ +} while(0) + #define ASSERTIF(C, X) \ do { \ } while(0) diff --git a/fs/afs/main.c b/fs/afs/main.c index 80ec6fd19a73..f1f71ff7d5c6 100644 --- a/fs/afs/main.c +++ b/fs/afs/main.c @@ -149,6 +149,7 @@ error_cache: afs_vlocation_purge(); afs_cell_purge(); afs_proc_cleanup(); + rcu_barrier(); printk(KERN_ERR "kAFS: failed to register: %d\n", ret); return ret; } @@ -176,6 +177,7 @@ static void __exit afs_exit(void) cachefs_unregister_netfs(&afs_cache_netfs); #endif afs_proc_cleanup(); + rcu_barrier(); } module_exit(afs_exit); diff --git a/fs/afs/misc.c b/fs/afs/misc.c index cdb9792d8161..d1a889c40742 100644 --- a/fs/afs/misc.c +++ b/fs/afs/misc.c @@ -22,6 +22,7 @@ int afs_abort_to_error(u32 abort_code) { switch (abort_code) { case 13: return -EACCES; + case 27: return -EFBIG; case 30: return -EROFS; case VSALVAGE: return -EIO; case VNOVNODE: return -ENOENT; diff --git a/fs/afs/mntpt.c b/fs/afs/mntpt.c index 034fcfd4e330..a3684dcc76e7 100644 --- a/fs/afs/mntpt.c +++ b/fs/afs/mntpt.c @@ -36,7 +36,7 @@ const struct inode_operations afs_mntpt_inode_operations = { .lookup = afs_mntpt_lookup, .follow_link = afs_mntpt_follow_link, .readlink = page_readlink, - .getattr = afs_inode_getattr, + .getattr = afs_getattr, }; static LIST_HEAD(afs_vfsmounts); @@ -58,7 +58,8 @@ int afs_mntpt_check_symlink(struct afs_vnode *vnode, struct key *key) char *buf; int ret; - _enter("{%u,%u}", vnode->fid.vnode, vnode->fid.unique); + _enter("{%x:%u,%u}", + vnode->fid.vid, vnode->fid.vnode, vnode->fid.unique); /* read the contents of the symlink into the pagecache */ page = read_mapping_page(AFS_VNODE_TO_I(vnode)->i_mapping, 0, &file); diff --git a/fs/afs/rxrpc.c b/fs/afs/rxrpc.c index 222c1a3abbb8..04189c47d6a0 100644 --- a/fs/afs/rxrpc.c +++ b/fs/afs/rxrpc.c @@ -237,6 +237,70 @@ void afs_flat_call_destructor(struct afs_call *call) } /* + * attach the data from a bunch of pages on an inode to a call + */ +int afs_send_pages(struct afs_call *call, struct msghdr *msg, struct kvec *iov) +{ + struct page *pages[8]; + unsigned count, n, loop, offset, to; + pgoff_t first = call->first, last = call->last; + int ret; + + _enter(""); + + offset = call->first_offset; + call->first_offset = 0; + + do { + _debug("attach %lx-%lx", first, last); + + count = last - first + 1; + if (count > ARRAY_SIZE(pages)) + count = ARRAY_SIZE(pages); + n = find_get_pages_contig(call->mapping, first, count, pages); + ASSERTCMP(n, ==, count); + + loop = 0; + do { + msg->msg_flags = 0; + to = PAGE_SIZE; + if (first + loop >= last) + to = call->last_to; + else + msg->msg_flags = MSG_MORE; + iov->iov_base = kmap(pages[loop]) + offset; + iov->iov_len = to - offset; + offset = 0; + + _debug("- range %u-%u%s", + offset, to, msg->msg_flags ? " [more]" : ""); + msg->msg_iov = (struct iovec *) iov; + msg->msg_iovlen = 1; + + /* have to change the state *before* sending the last + * packet as RxRPC might give us the reply before it + * returns from sending the request */ + if (first + loop >= last) + call->state = AFS_CALL_AWAIT_REPLY; + ret = rxrpc_kernel_send_data(call->rxcall, msg, + to - offset); + kunmap(pages[loop]); + if (ret < 0) + break; + } while (++loop < count); + first += count; + + for (loop = 0; loop < count; loop++) + put_page(pages[loop]); + if (ret < 0) + break; + } while (first < last); + + _leave(" = %d", ret); + return ret; +} + +/* * initiate a call */ int afs_make_call(struct in_addr *addr, struct afs_call *call, gfp_t gfp, @@ -253,8 +317,9 @@ int afs_make_call(struct in_addr *addr, struct afs_call *call, gfp_t gfp, ASSERT(call->type != NULL); ASSERT(call->type->name != NULL); - _debug("MAKE %p{%s} [%d]", - call, call->type->name, atomic_read(&afs_outstanding_calls)); + _debug("____MAKE %p{%s,%x} [%d]____", + call, call->type->name, key_serial(call->key), + atomic_read(&afs_outstanding_calls)); call->wait_mode = wait_mode; INIT_WORK(&call->async_work, afs_process_async_call); @@ -289,16 +354,23 @@ int afs_make_call(struct in_addr *addr, struct afs_call *call, gfp_t gfp, msg.msg_iovlen = 1; msg.msg_control = NULL; msg.msg_controllen = 0; - msg.msg_flags = 0; + msg.msg_flags = (call->send_pages ? MSG_MORE : 0); /* have to change the state *before* sending the last packet as RxRPC * might give us the reply before it returns from sending the * request */ - call->state = AFS_CALL_AWAIT_REPLY; + if (!call->send_pages) + call->state = AFS_CALL_AWAIT_REPLY; ret = rxrpc_kernel_send_data(rxcall, &msg, call->request_size); if (ret < 0) goto error_do_abort; + if (call->send_pages) { + ret = afs_send_pages(call, &msg, iov); + if (ret < 0) + goto error_do_abort; + } + /* at this point, an async call may no longer exist as it may have * already completed */ return wait_mode->wait(call); diff --git a/fs/afs/security.c b/fs/afs/security.c index f9f424d80458..e0ea88b63ebf 100644 --- a/fs/afs/security.c +++ b/fs/afs/security.c @@ -109,7 +109,7 @@ void afs_clear_permits(struct afs_vnode *vnode) { struct afs_permits *permits; - _enter("{%x}", vnode->fid.vnode); + _enter("{%x:%u}", vnode->fid.vid, vnode->fid.vnode); mutex_lock(&vnode->permits_lock); permits = vnode->permits; @@ -132,7 +132,8 @@ void afs_cache_permit(struct afs_vnode *vnode, struct key *key, long acl_order) struct afs_vnode *auth_vnode; int count, loop; - _enter("{%x},%x,%lx", vnode->fid.vnode, key_serial(key), acl_order); + _enter("{%x:%u},%x,%lx", + vnode->fid.vid, vnode->fid.vnode, key_serial(key), acl_order); auth_vnode = afs_get_auth_inode(vnode, key); if (IS_ERR(auth_vnode)) { @@ -220,7 +221,8 @@ static int afs_check_permit(struct afs_vnode *vnode, struct key *key, bool valid; int loop, ret; - _enter(""); + _enter("{%x:%u},%x", + vnode->fid.vid, vnode->fid.vnode, key_serial(key)); auth_vnode = afs_get_auth_inode(vnode, key); if (IS_ERR(auth_vnode)) { @@ -268,9 +270,9 @@ static int afs_check_permit(struct afs_vnode *vnode, struct key *key, _leave(" = %d", ret); return ret; } + *_access = vnode->status.caller_access; } - *_access = vnode->status.caller_access; iput(&auth_vnode->vfs_inode); _leave(" = 0 [access %x]", *_access); return 0; @@ -288,7 +290,7 @@ int afs_permission(struct inode *inode, int mask, struct nameidata *nd) struct key *key; int ret; - _enter("{{%x:%x},%lx},%x,", + _enter("{{%x:%u},%lx},%x,", vnode->fid.vid, vnode->fid.vnode, vnode->flags, mask); key = afs_request_key(vnode->volume->cell); diff --git a/fs/afs/server.c b/fs/afs/server.c index 96bb23b476a2..231ae4150279 100644 --- a/fs/afs/server.c +++ b/fs/afs/server.c @@ -252,6 +252,9 @@ static void afs_destroy_server(struct afs_server *server) { _enter("%p", server); + ASSERTIF(server->cb_break_head != server->cb_break_tail, + delayed_work_pending(&server->cb_break_work)); + ASSERTCMP(server->fs_vnodes.rb_node, ==, NULL); ASSERTCMP(server->cb_promises.rb_node, ==, NULL); ASSERTCMP(server->cb_break_head, ==, server->cb_break_tail); diff --git a/fs/afs/super.c b/fs/afs/super.c index 7030d76155fc..d24be334b608 100644 --- a/fs/afs/super.c +++ b/fs/afs/super.c @@ -50,6 +50,7 @@ static const struct super_operations afs_super_ops = { .statfs = simple_statfs, .alloc_inode = afs_alloc_inode, .drop_inode = generic_delete_inode, + .write_inode = afs_write_inode, .destroy_inode = afs_destroy_inode, .clear_inode = afs_clear_inode, .umount_begin = afs_umount_begin, @@ -66,7 +67,7 @@ enum { afs_opt_vol, }; -static const match_table_t afs_options_list = { +static match_table_t afs_options_list = { { afs_opt_cell, "cell=%s" }, { afs_opt_rwpath, "rwpath" }, { afs_opt_vol, "vol=%s" }, @@ -459,7 +460,9 @@ static void afs_i_init_once(void *_vnode, struct kmem_cache *cachep, init_waitqueue_head(&vnode->update_waitq); mutex_init(&vnode->permits_lock); mutex_init(&vnode->validate_lock); + spin_lock_init(&vnode->writeback_lock); spin_lock_init(&vnode->lock); + INIT_LIST_HEAD(&vnode->writebacks); INIT_WORK(&vnode->cb_broken_work, afs_broken_callback_work); } } diff --git a/fs/afs/vnode.c b/fs/afs/vnode.c index a1904ab8426a..ec814660209f 100644 --- a/fs/afs/vnode.c +++ b/fs/afs/vnode.c @@ -261,7 +261,7 @@ int afs_vnode_fetch_status(struct afs_vnode *vnode, DECLARE_WAITQUEUE(myself, current); - _enter("%s,{%u,%u,%u}", + _enter("%s,{%x:%u.%u}", vnode->volume->vlocation->vldb.name, vnode->fid.vid, vnode->fid.vnode, vnode->fid.unique); @@ -389,7 +389,7 @@ int afs_vnode_fetch_data(struct afs_vnode *vnode, struct key *key, struct afs_server *server; int ret; - _enter("%s{%u,%u,%u},%x,,,", + _enter("%s{%x:%u.%u},%x,,,", vnode->volume->vlocation->vldb.name, vnode->fid.vid, vnode->fid.vnode, @@ -446,7 +446,7 @@ int afs_vnode_create(struct afs_vnode *vnode, struct key *key, struct afs_server *server; int ret; - _enter("%s{%u,%u,%u},%x,%s,,", + _enter("%s{%x:%u.%u},%x,%s,,", vnode->volume->vlocation->vldb.name, vnode->fid.vid, vnode->fid.vnode, @@ -502,7 +502,7 @@ int afs_vnode_remove(struct afs_vnode *vnode, struct key *key, const char *name, struct afs_server *server; int ret; - _enter("%s{%u,%u,%u},%x,%s", + _enter("%s{%x:%u.%u},%x,%s", vnode->volume->vlocation->vldb.name, vnode->fid.vid, vnode->fid.vnode, @@ -557,7 +557,7 @@ extern int afs_vnode_link(struct afs_vnode *dvnode, struct afs_vnode *vnode, struct afs_server *server; int ret; - _enter("%s{%u,%u,%u},%s{%u,%u,%u},%x,%s", + _enter("%s{%x:%u.%u},%s{%x:%u.%u},%x,%s", dvnode->volume->vlocation->vldb.name, dvnode->fid.vid, dvnode->fid.vnode, @@ -628,7 +628,7 @@ int afs_vnode_symlink(struct afs_vnode *vnode, struct key *key, struct afs_server *server; int ret; - _enter("%s{%u,%u,%u},%x,%s,%s,,,", + _enter("%s{%x:%u.%u},%x,%s,%s,,,", vnode->volume->vlocation->vldb.name, vnode->fid.vid, vnode->fid.vnode, @@ -687,7 +687,7 @@ int afs_vnode_rename(struct afs_vnode *orig_dvnode, struct afs_server *server; int ret; - _enter("%s{%u,%u,%u},%s{%u,%u,%u},%x,%s,%s", + _enter("%s{%x:%u.%u},%s{%u,%u,%u},%x,%s,%s", orig_dvnode->volume->vlocation->vldb.name, orig_dvnode->fid.vid, orig_dvnode->fid.vnode, @@ -753,3 +753,110 @@ no_server: _leave(" = %ld [cnt %d]", PTR_ERR(server), orig_dvnode->update_cnt); return PTR_ERR(server); } + +/* + * write to a file + */ +int afs_vnode_store_data(struct afs_writeback *wb, pgoff_t first, pgoff_t last, + unsigned offset, unsigned to) +{ + struct afs_server *server; + struct afs_vnode *vnode = wb->vnode; + int ret; + + _enter("%s{%x:%u.%u},%x,%lx,%lx,%x,%x", + vnode->volume->vlocation->vldb.name, + vnode->fid.vid, + vnode->fid.vnode, + vnode->fid.unique, + key_serial(wb->key), + first, last, offset, to); + + /* this op will fetch the status */ + spin_lock(&vnode->lock); + vnode->update_cnt++; + spin_unlock(&vnode->lock); + + do { + /* pick a server to query */ + server = afs_volume_pick_fileserver(vnode); + if (IS_ERR(server)) + goto no_server; + + _debug("USING SERVER: %08x\n", ntohl(server->addr.s_addr)); + + ret = afs_fs_store_data(server, wb, first, last, offset, to, + &afs_sync_call); + + } while (!afs_volume_release_fileserver(vnode, server, ret)); + + /* adjust the flags */ + if (ret == 0) { + afs_vnode_finalise_status_update(vnode, server); + afs_put_server(server); + } else { + afs_vnode_status_update_failed(vnode, ret); + } + + _leave(" = %d", ret); + return ret; + +no_server: + spin_lock(&vnode->lock); + vnode->update_cnt--; + ASSERTCMP(vnode->update_cnt, >=, 0); + spin_unlock(&vnode->lock); + return PTR_ERR(server); +} + +/* + * set the attributes on a file + */ +int afs_vnode_setattr(struct afs_vnode *vnode, struct key *key, + struct iattr *attr) +{ + struct afs_server *server; + int ret; + + _enter("%s{%x:%u.%u},%x", + vnode->volume->vlocation->vldb.name, + vnode->fid.vid, + vnode->fid.vnode, + vnode->fid.unique, + key_serial(key)); + + /* this op will fetch the status */ + spin_lock(&vnode->lock); + vnode->update_cnt++; + spin_unlock(&vnode->lock); + + do { + /* pick a server to query */ + server = afs_volume_pick_fileserver(vnode); + if (IS_ERR(server)) + goto no_server; + + _debug("USING SERVER: %08x\n", ntohl(server->addr.s_addr)); + + ret = afs_fs_setattr(server, key, vnode, attr, &afs_sync_call); + + } while (!afs_volume_release_fileserver(vnode, server, ret)); + + /* adjust the flags */ + if (ret == 0) { + afs_vnode_finalise_status_update(vnode, server); + afs_put_server(server); + } else { + afs_vnode_status_update_failed(vnode, ret); + } + + _leave(" = %d", ret); + return ret; + +no_server: + spin_lock(&vnode->lock); + vnode->update_cnt--; + ASSERTCMP(vnode->update_cnt, >=, 0); + spin_unlock(&vnode->lock); + return PTR_ERR(server); +} diff --git a/fs/afs/write.c b/fs/afs/write.c new file mode 100644 index 000000000000..83ff29262816 --- /dev/null +++ b/fs/afs/write.c @@ -0,0 +1,835 @@ +/* handling of writes to regular files and writing back to the server + * + * Copyright (C) 2007 Red Hat, Inc. All Rights Reserved. + * Written by David Howells (dhowells@redhat.com) + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version + * 2 of the License, or (at your option) any later version. + */ + +#include <linux/slab.h> +#include <linux/fs.h> +#include <linux/pagemap.h> +#include <linux/writeback.h> +#include <linux/pagevec.h> +#include "internal.h" + +static int afs_write_back_from_locked_page(struct afs_writeback *wb, + struct page *page); + +/* + * mark a page as having been made dirty and thus needing writeback + */ +int afs_set_page_dirty(struct page *page) +{ + _enter(""); + return __set_page_dirty_nobuffers(page); +} + +/* + * unlink a writeback record because its usage has reached zero + * - must be called with the wb->vnode->writeback_lock held + */ +static void afs_unlink_writeback(struct afs_writeback *wb) +{ + struct afs_writeback *front; + struct afs_vnode *vnode = wb->vnode; + + list_del_init(&wb->link); + if (!list_empty(&vnode->writebacks)) { + /* if an fsync rises to the front of the queue then wake it + * up */ + front = list_entry(vnode->writebacks.next, + struct afs_writeback, link); + if (front->state == AFS_WBACK_SYNCING) { + _debug("wake up sync"); + front->state = AFS_WBACK_COMPLETE; + wake_up(&front->waitq); + } + } +} + +/* + * free a writeback record + */ +static void afs_free_writeback(struct afs_writeback *wb) +{ + _enter(""); + key_put(wb->key); + kfree(wb); +} + +/* + * dispose of a reference to a writeback record + */ +void afs_put_writeback(struct afs_writeback *wb) +{ + struct afs_vnode *vnode = wb->vnode; + + _enter("{%d}", wb->usage); + + spin_lock(&vnode->writeback_lock); + if (--wb->usage == 0) + afs_unlink_writeback(wb); + else + wb = NULL; + spin_unlock(&vnode->writeback_lock); + if (wb) + afs_free_writeback(wb); +} + +/* + * partly or wholly fill a page that's under preparation for writing + */ +static int afs_fill_page(struct afs_vnode *vnode, struct key *key, + unsigned start, unsigned len, struct page *page) +{ + int ret; + + _enter(",,%u,%u", start, len); + + ASSERTCMP(start + len, <=, PAGE_SIZE); + + ret = afs_vnode_fetch_data(vnode, key, start, len, page); + if (ret < 0) { + if (ret == -ENOENT) { + _debug("got NOENT from server" + " - marking file deleted and stale"); + set_bit(AFS_VNODE_DELETED, &vnode->flags); + ret = -ESTALE; + } + } + + _leave(" = %d", ret); + return ret; +} + +/* + * prepare a page for being written to + */ +static int afs_prepare_page(struct afs_vnode *vnode, struct page *page, + struct key *key, unsigned offset, unsigned to) +{ + unsigned eof, tail, start, stop, len; + loff_t i_size, pos; + void *p; + int ret; + + _enter(""); + + if (offset == 0 && to == PAGE_SIZE) + return 0; + + p = kmap(page); + + i_size = i_size_read(&vnode->vfs_inode); + pos = (loff_t) page->index << PAGE_SHIFT; + if (pos >= i_size) { + /* partial write, page beyond EOF */ + _debug("beyond"); + if (offset > 0) + memset(p, 0, offset); + if (to < PAGE_SIZE) + memset(p + to, 0, PAGE_SIZE - to); + kunmap(page); + return 0; + } + + if (i_size - pos >= PAGE_SIZE) { + /* partial write, page entirely before EOF */ + _debug("before"); + tail = eof = PAGE_SIZE; + } else { + /* partial write, page overlaps EOF */ + eof = i_size - pos; + _debug("overlap %u", eof); + tail = max(eof, to); + if (tail < PAGE_SIZE) + memset(p + tail, 0, PAGE_SIZE - tail); + if (offset > eof) + memset(p + eof, 0, PAGE_SIZE - eof); + } + + kunmap(p); + + ret = 0; + if (offset > 0 || eof > to) { + /* need to fill one or two bits that aren't going to be written + * (cover both fillers in one read if there are two) */ + start = (offset > 0) ? 0 : to; + stop = (eof > to) ? eof : offset; + len = stop - start; + _debug("wr=%u-%u av=0-%u rd=%u@%u", + offset, to, eof, start, len); + ret = afs_fill_page(vnode, key, start, len, page); + } + + _leave(" = %d", ret); + return ret; +} + +/* + * prepare to perform part of a write to a page + * - the caller holds the page locked, preventing it from being written out or + * modified by anyone else + */ +int afs_prepare_write(struct file *file, struct page *page, + unsigned offset, unsigned to) +{ + struct afs_writeback *candidate, *wb; + struct afs_vnode *vnode = AFS_FS_I(file->f_dentry->d_inode); + struct key *key = file->private_data; + pgoff_t index; + int ret; + + _enter("{%x:%u},{%lx},%u,%u", + vnode->fid.vid, vnode->fid.vnode, page->index, offset, to); + + candidate = kzalloc(sizeof(*candidate), GFP_KERNEL); + if (!candidate) + return -ENOMEM; + candidate->vnode = vnode; + candidate->first = candidate->last = page->index; + candidate->offset_first = offset; + candidate->to_last = to; + candidate->usage = 1; + candidate->state = AFS_WBACK_PENDING; + init_waitqueue_head(&candidate->waitq); + + if (!PageUptodate(page)) { + _debug("not up to date"); + ret = afs_prepare_page(vnode, page, key, offset, to); + if (ret < 0) { + kfree(candidate); + _leave(" = %d [prep]", ret); + return ret; + } + SetPageUptodate(page); + } + +try_again: + index = page->index; + spin_lock(&vnode->writeback_lock); + + /* see if this page is already pending a writeback under a suitable key + * - if so we can just join onto that one */ + wb = (struct afs_writeback *) page_private(page); + if (wb) { + if (wb->key == key && wb->state == AFS_WBACK_PENDING) + goto subsume_in_current_wb; + goto flush_conflicting_wb; + } + + if (index > 0) { + /* see if we can find an already pending writeback that we can + * append this page to */ + list_for_each_entry(wb, &vnode->writebacks, link) { + if (wb->last == index - 1 && wb->key == key && + wb->state == AFS_WBACK_PENDING) + goto append_to_previous_wb; + } + } + + list_add_tail(&candidate->link, &vnode->writebacks); + candidate->key = key_get(key); + spin_unlock(&vnode->writeback_lock); + SetPagePrivate(page); + set_page_private(page, (unsigned long) candidate); + _leave(" = 0 [new]"); + return 0; + +subsume_in_current_wb: + _debug("subsume"); + ASSERTRANGE(wb->first, <=, index, <=, wb->last); + if (index == wb->first && offset < wb->offset_first) + wb->offset_first = offset; + if (index == wb->last && to > wb->to_last) + wb->to_last = to; + spin_unlock(&vnode->writeback_lock); + kfree(candidate); + _leave(" = 0 [sub]"); + return 0; + +append_to_previous_wb: + _debug("append into %lx-%lx", wb->first, wb->last); + wb->usage++; + wb->last++; + wb->to_last = to; + spin_unlock(&vnode->writeback_lock); + SetPagePrivate(page); + set_page_private(page, (unsigned long) wb); + kfree(candidate); + _leave(" = 0 [app]"); + return 0; + + /* the page is currently bound to another context, so if it's dirty we + * need to flush it before we can use the new context */ +flush_conflicting_wb: + _debug("flush conflict"); + if (wb->state == AFS_WBACK_PENDING) + wb->state = AFS_WBACK_CONFLICTING; + spin_unlock(&vnode->writeback_lock); + if (PageDirty(page)) { + ret = afs_write_back_from_locked_page(wb, page); + if (ret < 0) { + afs_put_writeback(candidate); + _leave(" = %d", ret); + return ret; + } + } + + /* the page holds a ref on the writeback record */ + afs_put_writeback(wb); + set_page_private(page, 0); + ClearPagePrivate(page); + goto try_again; +} + +/* + * finalise part of a write to a page + */ +int afs_commit_write(struct file *file, struct page *page, + unsigned offset, unsigned to) +{ + struct afs_vnode *vnode = AFS_FS_I(file->f_dentry->d_inode); + loff_t i_size, maybe_i_size; + + _enter("{%x:%u},{%lx},%u,%u", + vnode->fid.vid, vnode->fid.vnode, page->index, offset, to); + + maybe_i_size = (loff_t) page->index << PAGE_SHIFT; + maybe_i_size += to; + + i_size = i_size_read(&vnode->vfs_inode); + if (maybe_i_size > i_size) { + spin_lock(&vnode->writeback_lock); + i_size = i_size_read(&vnode->vfs_inode); + if (maybe_i_size > i_size) + i_size_write(&vnode->vfs_inode, maybe_i_size); + spin_unlock(&vnode->writeback_lock); + } + + set_page_dirty(page); + + if (PageDirty(page)) + _debug("dirtied"); + + return 0; +} + +/* + * kill all the pages in the given range + */ +static void afs_kill_pages(struct afs_vnode *vnode, bool error, + pgoff_t first, pgoff_t last) +{ + struct pagevec pv; + unsigned count, loop; + + _enter("{%x:%u},%lx-%lx", + vnode->fid.vid, vnode->fid.vnode, first, last); + + pagevec_init(&pv, 0); + + do { + _debug("kill %lx-%lx", first, last); + + count = last - first + 1; + if (count > PAGEVEC_SIZE) + count = PAGEVEC_SIZE; + pv.nr = find_get_pages_contig(vnode->vfs_inode.i_mapping, + first, count, pv.pages); + ASSERTCMP(pv.nr, ==, count); + + for (loop = 0; loop < count; loop++) { + ClearPageUptodate(pv.pages[loop]); + if (error) + SetPageError(pv.pages[loop]); + end_page_writeback(pv.pages[loop]); + } + + __pagevec_release(&pv); + } while (first < last); + + _leave(""); +} + +/* + * synchronously write back the locked page and any subsequent non-locked dirty + * pages also covered by the same writeback record + */ +static int afs_write_back_from_locked_page(struct afs_writeback *wb, + struct page *primary_page) +{ + struct page *pages[8], *page; + unsigned long count; + unsigned n, offset, to; + pgoff_t start, first, last; + int loop, ret; + + _enter(",%lx", primary_page->index); + + count = 1; + if (!clear_page_dirty_for_io(primary_page)) + BUG(); + if (test_set_page_writeback(primary_page)) + BUG(); + + /* find all consecutive lockable dirty pages, stopping when we find a + * page that is not immediately lockable, is not dirty or is missing, + * or we reach the end of the range */ + start = primary_page->index; + if (start >= wb->last) + goto no_more; + start++; + do { + _debug("more %lx [%lx]", start, count); + n = wb->last - start + 1; + if (n > ARRAY_SIZE(pages)) + n = ARRAY_SIZE(pages); + n = find_get_pages_contig(wb->vnode->vfs_inode.i_mapping, + start, n, pages); + _debug("fgpc %u", n); + if (n == 0) + goto no_more; + if (pages[0]->index != start) { + for (n--; n >= 0; n--) + put_page(pages[n]); + goto no_more; + } + + for (loop = 0; loop < n; loop++) { + page = pages[loop]; + if (page->index > wb->last) + break; + if (TestSetPageLocked(page)) + break; + if (!PageDirty(page) || + page_private(page) != (unsigned long) wb) { + unlock_page(page); + break; + } + if (!clear_page_dirty_for_io(page)) + BUG(); + if (test_set_page_writeback(page)) + BUG(); + unlock_page(page); + put_page(page); + } + count += loop; + if (loop < n) { + for (; loop < n; loop++) + put_page(pages[loop]); + goto no_more; + } + + start += loop; + } while (start <= wb->last && count < 65536); + +no_more: + /* we now have a contiguous set of dirty pages, each with writeback set + * and the dirty mark cleared; the first page is locked and must remain + * so, all the rest are unlocked */ + first = primary_page->index; + last = first + count - 1; + + offset = (first == wb->first) ? wb->offset_first : 0; + to = (last == wb->last) ? wb->to_last : PAGE_SIZE; + + _debug("write back %lx[%u..] to %lx[..%u]", first, offset, last, to); + + ret = afs_vnode_store_data(wb, first, last, offset, to); + if (ret < 0) { + switch (ret) { + case -EDQUOT: + case -ENOSPC: + set_bit(AS_ENOSPC, + &wb->vnode->vfs_inode.i_mapping->flags); + break; + case -EROFS: + case -EIO: + case -EREMOTEIO: + case -EFBIG: + case -ENOENT: + case -ENOMEDIUM: + case -ENXIO: + afs_kill_pages(wb->vnode, true, first, last); + set_bit(AS_EIO, &wb->vnode->vfs_inode.i_mapping->flags); + break; + case -EACCES: + case -EPERM: + case -ENOKEY: + case -EKEYEXPIRED: + case -EKEYREJECTED: + case -EKEYREVOKED: + afs_kill_pages(wb->vnode, false, first, last); + break; + default: + break; + } + } else { + ret = count; + } + + _leave(" = %d", ret); + return ret; +} + +/* + * write a page back to the server + * - the caller locked the page for us + */ +int afs_writepage(struct page *page, struct writeback_control *wbc) +{ + struct backing_dev_info *bdi = page->mapping->backing_dev_info; + struct afs_writeback *wb; + int ret; + + _enter("{%lx},", page->index); + + if (wbc->sync_mode != WB_SYNC_NONE) + wait_on_page_writeback(page); + + if (PageWriteback(page) || !PageDirty(page)) { + unlock_page(page); + return 0; + } + + wb = (struct afs_writeback *) page_private(page); + ASSERT(wb != NULL); + + ret = afs_write_back_from_locked_page(wb, page); + unlock_page(page); + if (ret < 0) { + _leave(" = %d", ret); + return 0; + } + + wbc->nr_to_write -= ret; + if (wbc->nonblocking && bdi_write_congested(bdi)) + wbc->encountered_congestion = 1; + + _leave(" = 0"); + return 0; +} + +/* + * write a region of pages back to the server + */ +int afs_writepages_region(struct address_space *mapping, + struct writeback_control *wbc, + pgoff_t index, pgoff_t end, pgoff_t *_next) +{ + struct backing_dev_info *bdi = mapping->backing_dev_info; + struct afs_writeback *wb; + struct page *page; + int ret, n; + + _enter(",,%lx,%lx,", index, end); + + do { + n = find_get_pages_tag(mapping, &index, PAGECACHE_TAG_DIRTY, + 1, &page); + if (!n) + break; + + _debug("wback %lx", page->index); + + if (page->index > end) { + *_next = index; + page_cache_release(page); + _leave(" = 0 [%lx]", *_next); + return 0; + } + + /* at this point we hold neither mapping->tree_lock nor lock on + * the page itself: the page may be truncated or invalidated + * (changing page->mapping to NULL), or even swizzled back from + * swapper_space to tmpfs file mapping + */ + lock_page(page); + + if (page->mapping != mapping) { + unlock_page(page); + page_cache_release(page); + continue; + } + + if (wbc->sync_mode != WB_SYNC_NONE) + wait_on_page_writeback(page); + + if (PageWriteback(page) || !PageDirty(page)) { + unlock_page(page); + continue; + } + + wb = (struct afs_writeback *) page_private(page); + ASSERT(wb != NULL); + + spin_lock(&wb->vnode->writeback_lock); + wb->state = AFS_WBACK_WRITING; + spin_unlock(&wb->vnode->writeback_lock); + + ret = afs_write_back_from_locked_page(wb, page); + unlock_page(page); + page_cache_release(page); + if (ret < 0) { + _leave(" = %d", ret); + return ret; + } + + wbc->nr_to_write -= ret; + + if (wbc->nonblocking && bdi_write_congested(bdi)) { + wbc->encountered_congestion = 1; + break; + } + + cond_resched(); + } while (index < end && wbc->nr_to_write > 0); + + *_next = index; + _leave(" = 0 [%lx]", *_next); + return 0; +} + +/* + * write some of the pending data back to the server + */ +int afs_writepages(struct address_space *mapping, + struct writeback_control *wbc) +{ + struct backing_dev_info *bdi = mapping->backing_dev_info; + pgoff_t start, end, next; + int ret; + + _enter(""); + + if (wbc->nonblocking && bdi_write_congested(bdi)) { + wbc->encountered_congestion = 1; + _leave(" = 0 [congest]"); + return 0; + } + + if (wbc->range_cyclic) { + start = mapping->writeback_index; + end = -1; + ret = afs_writepages_region(mapping, wbc, start, end, &next); + if (start > 0 && wbc->nr_to_write > 0 && ret == 0 && + !(wbc->nonblocking && wbc->encountered_congestion)) + ret = afs_writepages_region(mapping, wbc, 0, start, + &next); + mapping->writeback_index = next; + } else if (wbc->range_start == 0 && wbc->range_end == LLONG_MAX) { + end = (pgoff_t)(LLONG_MAX >> PAGE_CACHE_SHIFT); + ret = afs_writepages_region(mapping, wbc, 0, end, &next); + if (wbc->nr_to_write > 0) + mapping->writeback_index = next; + } else { + start = wbc->range_start >> PAGE_CACHE_SHIFT; + end = wbc->range_end >> PAGE_CACHE_SHIFT; + ret = afs_writepages_region(mapping, wbc, start, end, &next); + } + + _leave(" = %d", ret); + return ret; +} + +/* + * write an inode back + */ +int afs_write_inode(struct inode *inode, int sync) +{ + struct afs_vnode *vnode = AFS_FS_I(inode); + int ret; + + _enter("{%x:%u},", vnode->fid.vid, vnode->fid.vnode); + + ret = 0; + if (sync) { + ret = filemap_fdatawait(inode->i_mapping); + if (ret < 0) + __mark_inode_dirty(inode, I_DIRTY_DATASYNC); + } + + _leave(" = %d", ret); + return ret; +} + +/* + * completion of write to server + */ +void afs_pages_written_back(struct afs_vnode *vnode, struct afs_call *call) +{ + struct afs_writeback *wb = call->wb; + struct pagevec pv; + unsigned count, loop; + pgoff_t first = call->first, last = call->last; + bool free_wb; + + _enter("{%x:%u},{%lx-%lx}", + vnode->fid.vid, vnode->fid.vnode, first, last); + + ASSERT(wb != NULL); + + pagevec_init(&pv, 0); + + do { + _debug("attach %lx-%lx", first, last); + + count = last - first + 1; + if (count > PAGEVEC_SIZE) + count = PAGEVEC_SIZE; + pv.nr = find_get_pages_contig(call->mapping, first, count, + pv.pages); + ASSERTCMP(pv.nr, ==, count); + + spin_lock(&vnode->writeback_lock); + for (loop = 0; loop < count; loop++) { + struct page *page = pv.pages[loop]; + end_page_writeback(page); + if (page_private(page) == (unsigned long) wb) { + set_page_private(page, 0); + ClearPagePrivate(page); + wb->usage--; + } + } + free_wb = false; + if (wb->usage == 0) { + afs_unlink_writeback(wb); + free_wb = true; + } + spin_unlock(&vnode->writeback_lock); + first += count; + if (free_wb) { + afs_free_writeback(wb); + wb = NULL; + } + + __pagevec_release(&pv); + } while (first < last); + + _leave(""); +} + +/* + * write to an AFS file + */ +ssize_t afs_file_write(struct kiocb *iocb, const struct iovec *iov, + unsigned long nr_segs, loff_t pos) +{ + struct dentry *dentry = iocb->ki_filp->f_path.dentry; + struct afs_vnode *vnode = AFS_FS_I(dentry->d_inode); + ssize_t result; + size_t count = iov_length(iov, nr_segs); + int ret; + + _enter("{%x.%u},{%zu},%lu,", + vnode->fid.vid, vnode->fid.vnode, count, nr_segs); + + if (IS_SWAPFILE(&vnode->vfs_inode)) { + printk(KERN_INFO + "AFS: Attempt to write to active swap file!\n"); + return -EBUSY; + } + + if (!count) + return 0; + + result = generic_file_aio_write(iocb, iov, nr_segs, pos); + if (IS_ERR_VALUE(result)) { + _leave(" = %zd", result); + return result; + } + + /* return error values for O_SYNC and IS_SYNC() */ + if (IS_SYNC(&vnode->vfs_inode) || iocb->ki_filp->f_flags & O_SYNC) { + ret = afs_fsync(iocb->ki_filp, dentry, 1); + if (ret < 0) + result = ret; + } + + _leave(" = %zd", result); + return result; +} + +/* + * flush the vnode to the fileserver + */ +int afs_writeback_all(struct afs_vnode *vnode) +{ + struct address_space *mapping = vnode->vfs_inode.i_mapping; + struct writeback_control wbc = { + .bdi = mapping->backing_dev_info, + .sync_mode = WB_SYNC_ALL, + .nr_to_write = LONG_MAX, + .for_writepages = 1, + .range_cyclic = 1, + }; + int ret; + + _enter(""); + + ret = mapping->a_ops->writepages(mapping, &wbc); + __mark_inode_dirty(mapping->host, I_DIRTY_PAGES); + + _leave(" = %d", ret); + return ret; +} + +/* + * flush any dirty pages for this process, and check for write errors. + * - the return status from this call provides a reliable indication of + * whether any write errors occurred for this process. + */ +int afs_fsync(struct file *file, struct dentry *dentry, int datasync) +{ + struct afs_writeback *wb, *xwb; + struct afs_vnode *vnode = AFS_FS_I(dentry->d_inode); + int ret; + + _enter("{%x:%u},{n=%s},%d", + vnode->fid.vid, vnode->fid.vnode, dentry->d_name.name, + datasync); + + /* use a writeback record as a marker in the queue - when this reaches + * the front of the queue, all the outstanding writes are either + * completed or rejected */ + wb = kzalloc(sizeof(*wb), GFP_KERNEL); + if (!wb) + return -ENOMEM; + wb->vnode = vnode; + wb->first = 0; + wb->last = -1; + wb->offset_first = 0; + wb->to_last = PAGE_SIZE; + wb->usage = 1; + wb->state = AFS_WBACK_SYNCING; + init_waitqueue_head(&wb->waitq); + + spin_lock(&vnode->writeback_lock); + list_for_each_entry(xwb, &vnode->writebacks, link) { + if (xwb->state == AFS_WBACK_PENDING) + xwb->state = AFS_WBACK_CONFLICTING; + } + list_add_tail(&wb->link, &vnode->writebacks); + spin_unlock(&vnode->writeback_lock); + + /* push all the outstanding writebacks to the server */ + ret = afs_writeback_all(vnode); + if (ret < 0) { + afs_put_writeback(wb); + _leave(" = %d [wb]", ret); + return ret; + } + + /* wait for the preceding writes to actually complete */ + ret = wait_event_interruptible(wb->waitq, + wb->state == AFS_WBACK_COMPLETE || + vnode->writebacks.next == &wb->link); + afs_put_writeback(wb); + _leave(" = %d", ret); + return ret; +} @@ -346,10 +346,9 @@ void fastcall exit_aio(struct mm_struct *mm) wait_for_all_aios(ctx); /* - * this is an overkill, but ensures we don't leave - * the ctx on the aio_wq + * Ensure we don't leave the ctx on the aio_wq */ - flush_workqueue(aio_wq); + cancel_work_sync(&ctx->wq.work); if (1 != atomic_read(&ctx->users)) printk(KERN_DEBUG @@ -372,7 +371,7 @@ void fastcall __put_ioctx(struct kioctx *ctx) BUG_ON(ctx->reqs_active); cancel_delayed_work(&ctx->wq); - flush_workqueue(aio_wq); + cancel_work_sync(&ctx->wq.work); aio_free_ring(ctx); mmdrop(ctx->mm); ctx->mm = NULL; diff --git a/fs/binfmt_misc.c b/fs/binfmt_misc.c index 18657f001b43..72d0b412c376 100644 --- a/fs/binfmt_misc.c +++ b/fs/binfmt_misc.c @@ -675,19 +675,8 @@ static ssize_t bm_status_read(struct file *file, char __user *buf, size_t nbytes, loff_t *ppos) { char *s = enabled ? "enabled" : "disabled"; - int len = strlen(s); - loff_t pos = *ppos; - if (pos < 0) - return -EINVAL; - if (pos >= len) - return 0; - if (len < pos + nbytes) - nbytes = len - pos; - if (copy_to_user(buf, s + pos, nbytes)) - return -EFAULT; - *ppos = pos + nbytes; - return nbytes; + return simple_read_from_buffer(buf, nbytes, ppos, s, strlen(s)); } static ssize_t bm_status_write(struct file * file, const char __user * buffer, diff --git a/fs/buffer.c b/fs/buffer.c index eb820b82a636..aecd057cd0e0 100644 --- a/fs/buffer.c +++ b/fs/buffer.c @@ -1846,13 +1846,8 @@ static int __block_prepare_write(struct inode *inode, struct page *page, if (block_start >= to) break; if (buffer_new(bh)) { - void *kaddr; - clear_buffer_new(bh); - kaddr = kmap_atomic(page, KM_USER0); - memset(kaddr+block_start, 0, bh->b_size); - flush_dcache_page(page); - kunmap_atomic(kaddr, KM_USER0); + zero_user_page(page, block_start, bh->b_size, KM_USER0); set_buffer_uptodate(bh); mark_buffer_dirty(bh); } @@ -1940,10 +1935,8 @@ int block_read_full_page(struct page *page, get_block_t *get_block) SetPageError(page); } if (!buffer_mapped(bh)) { - void *kaddr = kmap_atomic(page, KM_USER0); - memset(kaddr + i * blocksize, 0, blocksize); - flush_dcache_page(page); - kunmap_atomic(kaddr, KM_USER0); + zero_user_page(page, i * blocksize, blocksize, + KM_USER0); if (!err) set_buffer_uptodate(bh); continue; @@ -2086,7 +2079,6 @@ int cont_prepare_write(struct page *page, unsigned offset, long status; unsigned zerofrom; unsigned blocksize = 1 << inode->i_blkbits; - void *kaddr; while(page->index > (pgpos = *bytes>>PAGE_CACHE_SHIFT)) { status = -ENOMEM; @@ -2108,10 +2100,8 @@ int cont_prepare_write(struct page *page, unsigned offset, PAGE_CACHE_SIZE, get_block); if (status) goto out_unmap; - kaddr = kmap_atomic(new_page, KM_USER0); - memset(kaddr+zerofrom, 0, PAGE_CACHE_SIZE-zerofrom); - flush_dcache_page(new_page); - kunmap_atomic(kaddr, KM_USER0); + zero_user_page(page, zerofrom, PAGE_CACHE_SIZE - zerofrom, + KM_USER0); generic_commit_write(NULL, new_page, zerofrom, PAGE_CACHE_SIZE); unlock_page(new_page); page_cache_release(new_page); @@ -2138,10 +2128,7 @@ int cont_prepare_write(struct page *page, unsigned offset, if (status) goto out1; if (zerofrom < offset) { - kaddr = kmap_atomic(page, KM_USER0); - memset(kaddr+zerofrom, 0, offset-zerofrom); - flush_dcache_page(page); - kunmap_atomic(kaddr, KM_USER0); + zero_user_page(page, zerofrom, offset - zerofrom, KM_USER0); __block_commit_write(inode, page, zerofrom, offset); } return 0; @@ -2340,10 +2327,7 @@ failed: * Error recovery is pretty slack. Clear the page and mark it dirty * so we'll later zero out any blocks which _were_ allocated. */ - kaddr = kmap_atomic(page, KM_USER0); - memset(kaddr, 0, PAGE_CACHE_SIZE); - flush_dcache_page(page); - kunmap_atomic(kaddr, KM_USER0); + zero_user_page(page, 0, PAGE_CACHE_SIZE, KM_USER0); SetPageUptodate(page); set_page_dirty(page); return ret; @@ -2382,7 +2366,6 @@ int nobh_writepage(struct page *page, get_block_t *get_block, loff_t i_size = i_size_read(inode); const pgoff_t end_index = i_size >> PAGE_CACHE_SHIFT; unsigned offset; - void *kaddr; int ret; /* Is the page fully inside i_size? */ @@ -2413,10 +2396,7 @@ int nobh_writepage(struct page *page, get_block_t *get_block, * the page size, the remaining memory is zeroed when mapped, and * writes to that region are not written out to the file." */ - kaddr = kmap_atomic(page, KM_USER0); - memset(kaddr + offset, 0, PAGE_CACHE_SIZE - offset); - flush_dcache_page(page); - kunmap_atomic(kaddr, KM_USER0); + zero_user_page(page, offset, PAGE_CACHE_SIZE - offset, KM_USER0); out: ret = mpage_writepage(page, get_block, wbc); if (ret == -EAGAIN) @@ -2437,7 +2417,6 @@ int nobh_truncate_page(struct address_space *mapping, loff_t from) unsigned to; struct page *page; const struct address_space_operations *a_ops = mapping->a_ops; - char *kaddr; int ret = 0; if ((offset & (blocksize - 1)) == 0) @@ -2451,10 +2430,8 @@ int nobh_truncate_page(struct address_space *mapping, loff_t from) to = (offset + blocksize) & ~(blocksize - 1); ret = a_ops->prepare_write(NULL, page, offset, to); if (ret == 0) { - kaddr = kmap_atomic(page, KM_USER0); - memset(kaddr + offset, 0, PAGE_CACHE_SIZE - offset); - flush_dcache_page(page); - kunmap_atomic(kaddr, KM_USER0); + zero_user_page(page, offset, PAGE_CACHE_SIZE - offset, + KM_USER0); /* * It would be more correct to call aops->commit_write() * here, but this is more efficient. @@ -2480,7 +2457,6 @@ int block_truncate_page(struct address_space *mapping, struct inode *inode = mapping->host; struct page *page; struct buffer_head *bh; - void *kaddr; int err; blocksize = 1 << inode->i_blkbits; @@ -2534,11 +2510,7 @@ int block_truncate_page(struct address_space *mapping, goto unlock; } - kaddr = kmap_atomic(page, KM_USER0); - memset(kaddr + offset, 0, length); - flush_dcache_page(page); - kunmap_atomic(kaddr, KM_USER0); - + zero_user_page(page, offset, length, KM_USER0); mark_buffer_dirty(bh); err = 0; @@ -2559,7 +2531,6 @@ int block_write_full_page(struct page *page, get_block_t *get_block, loff_t i_size = i_size_read(inode); const pgoff_t end_index = i_size >> PAGE_CACHE_SHIFT; unsigned offset; - void *kaddr; /* Is the page fully inside i_size? */ if (page->index < end_index) @@ -2585,10 +2556,7 @@ int block_write_full_page(struct page *page, get_block_t *get_block, * the page size, the remaining memory is zeroed when mapped, and * writes to that region are not written out to the file." */ - kaddr = kmap_atomic(page, KM_USER0); - memset(kaddr + offset, 0, PAGE_CACHE_SIZE - offset); - flush_dcache_page(page); - kunmap_atomic(kaddr, KM_USER0); + zero_user_page(page, offset, PAGE_CACHE_SIZE - offset, KM_USER0); return __block_write_full_page(inode, page, get_block, wbc); } @@ -2978,7 +2946,7 @@ static void buffer_exit_cpu(int cpu) static int buffer_cpu_notify(struct notifier_block *self, unsigned long action, void *hcpu) { - if (action == CPU_DEAD) + if (action == CPU_DEAD || action == CPU_DEAD_FROZEN) buffer_exit_cpu((unsigned long)hcpu); return NOTIFY_OK; } diff --git a/fs/configfs/file.c b/fs/configfs/file.c index d98be5e01328..3527c7c6def8 100644 --- a/fs/configfs/file.c +++ b/fs/configfs/file.c @@ -77,36 +77,6 @@ static int fill_read_buffer(struct dentry * dentry, struct configfs_buffer * buf return ret; } - -/** - * flush_read_buffer - push buffer to userspace. - * @buffer: data buffer for file. - * @userbuf: user-passed buffer. - * @count: number of bytes requested. - * @ppos: file position. - * - * Copy the buffer we filled in fill_read_buffer() to userspace. - * This is done at the reader's leisure, copying and advancing - * the amount they specify each time. - * This may be called continuously until the buffer is empty. - */ -static int flush_read_buffer(struct configfs_buffer * buffer, char __user * buf, - size_t count, loff_t * ppos) -{ - int error; - - if (*ppos > buffer->count) - return 0; - - if (count > (buffer->count - *ppos)) - count = buffer->count - *ppos; - - error = copy_to_user(buf,buffer->page + *ppos,count); - if (!error) - *ppos += count; - return error ? -EFAULT : count; -} - /** * configfs_read_file - read an attribute. * @file: file pointer. @@ -139,7 +109,8 @@ configfs_read_file(struct file *file, char __user *buf, size_t count, loff_t *pp } pr_debug("%s: count = %zd, ppos = %lld, buf = %s\n", __FUNCTION__, count, *ppos, buffer->page); - retval = flush_read_buffer(buffer,buf,count,ppos); + retval = simple_read_from_buffer(buf, count, ppos, buffer->page, + buffer->count); out: up(&buffer->sem); return retval; diff --git a/fs/direct-io.c b/fs/direct-io.c index d9d0833444f5..8593f3dfd299 100644 --- a/fs/direct-io.c +++ b/fs/direct-io.c @@ -439,7 +439,7 @@ static int dio_bio_complete(struct dio *dio, struct bio *bio) * Wait on and process all in-flight BIOs. This must only be called once * all bios have been issued so that the refcount can only decrease. * This just waits for all bios to make it through dio_bio_complete. IO - * errors are propogated through dio->io_error and should be propogated via + * errors are propagated through dio->io_error and should be propagated via * dio_complete(). */ static void dio_await_completion(struct dio *dio) @@ -867,7 +867,6 @@ static int do_direct_IO(struct dio *dio) do_holes: /* Handle holes */ if (!buffer_mapped(map_bh)) { - char *kaddr; loff_t i_size_aligned; /* AKPM: eargh, -ENOTBLK is a hack */ @@ -888,11 +887,8 @@ do_holes: page_cache_release(page); goto out; } - kaddr = kmap_atomic(page, KM_USER0); - memset(kaddr + (block_in_page << blkbits), - 0, 1 << blkbits); - flush_dcache_page(page); - kunmap_atomic(kaddr, KM_USER0); + zero_user_page(page, block_in_page << blkbits, + 1 << blkbits, KM_USER0); dio->block_in_file++; block_in_page++; goto next_block; diff --git a/fs/ext3/inode.c b/fs/ext3/inode.c index e1bb03171986..a6cb6171c3af 100644 --- a/fs/ext3/inode.c +++ b/fs/ext3/inode.c @@ -1767,7 +1767,6 @@ static int ext3_block_truncate_page(handle_t *handle, struct page *page, struct inode *inode = mapping->host; struct buffer_head *bh; int err = 0; - void *kaddr; blocksize = inode->i_sb->s_blocksize; length = blocksize - (offset & (blocksize - 1)); @@ -1779,10 +1778,7 @@ static int ext3_block_truncate_page(handle_t *handle, struct page *page, */ if (!page_has_buffers(page) && test_opt(inode->i_sb, NOBH) && ext3_should_writeback_data(inode) && PageUptodate(page)) { - kaddr = kmap_atomic(page, KM_USER0); - memset(kaddr + offset, 0, length); - flush_dcache_page(page); - kunmap_atomic(kaddr, KM_USER0); + zero_user_page(page, offset, length, KM_USER0); set_page_dirty(page); goto unlock; } @@ -1835,11 +1831,7 @@ static int ext3_block_truncate_page(handle_t *handle, struct page *page, goto unlock; } - kaddr = kmap_atomic(page, KM_USER0); - memset(kaddr + offset, 0, length); - flush_dcache_page(page); - kunmap_atomic(kaddr, KM_USER0); - + zero_user_page(page, offset, length, KM_USER0); BUFFER_TRACE(bh, "zeroed end of block"); err = 0; diff --git a/fs/jbd/checkpoint.c b/fs/jbd/checkpoint.c index 0208cc7ac5d0..47552d4a6324 100644 --- a/fs/jbd/checkpoint.c +++ b/fs/jbd/checkpoint.c @@ -1,5 +1,5 @@ /* - * linux/fs/checkpoint.c + * linux/fs/jbd/checkpoint.c * * Written by Stephen C. Tweedie <sct@redhat.com>, 1999 * diff --git a/fs/jbd/recovery.c b/fs/jbd/recovery.c index 11563fe2a52b..2a5f4b833e35 100644 --- a/fs/jbd/recovery.c +++ b/fs/jbd/recovery.c @@ -1,5 +1,5 @@ /* - * linux/fs/recovery.c + * linux/fs/jbd/recovery.c * * Written by Stephen C. Tweedie <sct@redhat.com>, 1999 * diff --git a/fs/jbd/revoke.c b/fs/jbd/revoke.c index a68cbb605022..824e3b7d4ec1 100644 --- a/fs/jbd/revoke.c +++ b/fs/jbd/revoke.c @@ -1,5 +1,5 @@ /* - * linux/fs/revoke.c + * linux/fs/jbd/revoke.c * * Written by Stephen C. Tweedie <sct@redhat.com>, 2000 * diff --git a/fs/jbd/transaction.c b/fs/jbd/transaction.c index f9822fc07851..772b6531a2a2 100644 --- a/fs/jbd/transaction.c +++ b/fs/jbd/transaction.c @@ -1,5 +1,5 @@ /* - * linux/fs/transaction.c + * linux/fs/jbd/transaction.c * * Written by Stephen C. Tweedie <sct@redhat.com>, 1998 * diff --git a/fs/jbd2/checkpoint.c b/fs/jbd2/checkpoint.c index 68039fa9a566..3fccde7ba008 100644 --- a/fs/jbd2/checkpoint.c +++ b/fs/jbd2/checkpoint.c @@ -1,5 +1,5 @@ /* - * linux/fs/checkpoint.c + * linux/fs/jbd2/checkpoint.c * * Written by Stephen C. Tweedie <sct@redhat.com>, 1999 * diff --git a/fs/jbd2/recovery.c b/fs/jbd2/recovery.c index 9f10acafaf70..395c92a04ac9 100644 --- a/fs/jbd2/recovery.c +++ b/fs/jbd2/recovery.c @@ -1,5 +1,5 @@ /* - * linux/fs/recovery.c + * linux/fs/jbd2/recovery.c * * Written by Stephen C. Tweedie <sct@redhat.com>, 1999 * diff --git a/fs/jbd2/revoke.c b/fs/jbd2/revoke.c index 1e864dcc49ea..9246e763da78 100644 --- a/fs/jbd2/revoke.c +++ b/fs/jbd2/revoke.c @@ -1,5 +1,5 @@ /* - * linux/fs/revoke.c + * linux/fs/jbd2/revoke.c * * Written by Stephen C. Tweedie <sct@redhat.com>, 2000 * diff --git a/fs/jbd2/transaction.c b/fs/jbd2/transaction.c index e347d8c078bc..7946ff43fc40 100644 --- a/fs/jbd2/transaction.c +++ b/fs/jbd2/transaction.c @@ -1,5 +1,5 @@ /* - * linux/fs/transaction.c + * linux/fs/jbd2/transaction.c * * Written by Stephen C. Tweedie <sct@redhat.com>, 1998 * diff --git a/fs/jfs/jfs_dmap.c b/fs/jfs/jfs_dmap.c index 82b0544bd76d..f3b1ebb22280 100644 --- a/fs/jfs/jfs_dmap.c +++ b/fs/jfs/jfs_dmap.c @@ -1507,7 +1507,7 @@ dbAllocAG(struct bmap * bmp, int agno, s64 nblocks, int l2nb, s64 * results) if (l2nb < budmin) { /* search the lower level dmap control pages to get - * the starting block number of the the dmap that + * the starting block number of the dmap that * contains or starts off the free space. */ if ((rc = diff --git a/fs/jfs/jfs_imap.c b/fs/jfs/jfs_imap.c index c465607be991..c6530227cda6 100644 --- a/fs/jfs/jfs_imap.c +++ b/fs/jfs/jfs_imap.c @@ -386,7 +386,7 @@ int diRead(struct inode *ip) return -EIO; } - /* locate the the disk inode requested */ + /* locate the disk inode requested */ dp = (struct dinode *) mp->data; dp += rel_inode; @@ -1407,7 +1407,7 @@ int diAlloc(struct inode *pip, bool dir, struct inode *ip) inum = pip->i_ino + 1; ino = inum & (INOSPERIAG - 1); - /* back off the the hint if it is outside of the iag */ + /* back off the hint if it is outside of the iag */ if (ino == 0) inum = pip->i_ino; diff --git a/fs/jfs/jfs_logmgr.c b/fs/jfs/jfs_logmgr.c index 6a3f00dc8c83..44a2f33cb98d 100644 --- a/fs/jfs/jfs_logmgr.c +++ b/fs/jfs/jfs_logmgr.c @@ -1960,7 +1960,7 @@ static void lbmfree(struct lbuf * bp) /* * NAME: lbmRedrive * - * FUNCTION: add a log buffer to the the log redrive list + * FUNCTION: add a log buffer to the log redrive list * * PARAMETER: * bp - log buffer diff --git a/fs/libfs.c b/fs/libfs.c index 1247ee90253a..5294de1f40c4 100644 --- a/fs/libfs.c +++ b/fs/libfs.c @@ -159,7 +159,10 @@ int dcache_readdir(struct file * filp, void * dirent, filldir_t filldir) continue; spin_unlock(&dcache_lock); - if (filldir(dirent, next->d_name.name, next->d_name.len, filp->f_pos, next->d_inode->i_ino, dt_type(next->d_inode)) < 0) + if (filldir(dirent, next->d_name.name, + next->d_name.len, filp->f_pos, + next->d_inode->i_ino, + dt_type(next->d_inode)) < 0) return 0; spin_lock(&dcache_lock); /* next is still alive */ diff --git a/fs/mpage.c b/fs/mpage.c index fa2441f57b41..0fb914fc2ee0 100644 --- a/fs/mpage.c +++ b/fs/mpage.c @@ -284,11 +284,9 @@ do_mpage_readpage(struct bio *bio, struct page *page, unsigned nr_pages, } if (first_hole != blocks_per_page) { - char *kaddr = kmap_atomic(page, KM_USER0); - memset(kaddr + (first_hole << blkbits), 0, - PAGE_CACHE_SIZE - (first_hole << blkbits)); - flush_dcache_page(page); - kunmap_atomic(kaddr, KM_USER0); + zero_user_page(page, first_hole << blkbits, + PAGE_CACHE_SIZE - (first_hole << blkbits), + KM_USER0); if (first_hole == 0) { SetPageUptodate(page); unlock_page(page); @@ -576,14 +574,11 @@ page_is_mapped: * written out to the file." */ unsigned offset = i_size & (PAGE_CACHE_SIZE - 1); - char *kaddr; if (page->index > end_index || !offset) goto confused; - kaddr = kmap_atomic(page, KM_USER0); - memset(kaddr + offset, 0, PAGE_CACHE_SIZE - offset); - flush_dcache_page(page); - kunmap_atomic(kaddr, KM_USER0); + zero_user_page(page, offset, PAGE_CACHE_SIZE - offset, + KM_USER0); } /* diff --git a/fs/namei.c b/fs/namei.c index 856b2f5da51d..b3780e3fc88e 100644 --- a/fs/namei.c +++ b/fs/namei.c @@ -1152,14 +1152,12 @@ static int fastcall do_path_lookup(int dfd, const char *name, fput_light(file, fput_needed); } - current->total_link_count = 0; - retval = link_path_walk(name, nd); + + retval = path_walk(name, nd); out: - if (likely(retval == 0)) { - if (unlikely(!audit_dummy_context() && nd && nd->dentry && + if (unlikely(!retval && !audit_dummy_context() && nd->dentry && nd->dentry->d_inode)) audit_inode(name, nd->dentry->d_inode); - } out_fail: return retval; diff --git a/fs/nfsd/Makefile b/fs/nfsd/Makefile index ce341dc76d5e..9b118ee20193 100644 --- a/fs/nfsd/Makefile +++ b/fs/nfsd/Makefile @@ -11,4 +11,3 @@ nfsd-$(CONFIG_NFSD_V3) += nfs3proc.o nfs3xdr.o nfsd-$(CONFIG_NFSD_V3_ACL) += nfs3acl.o nfsd-$(CONFIG_NFSD_V4) += nfs4proc.o nfs4xdr.o nfs4state.o nfs4idmap.o \ nfs4acl.o nfs4callback.o nfs4recover.o -nfsd-objs := $(nfsd-y) diff --git a/fs/nfsd/export.c b/fs/nfsd/export.c index 6f24768272a1..79bd03b8bbf8 100644 --- a/fs/nfsd/export.c +++ b/fs/nfsd/export.c @@ -469,6 +469,13 @@ static int svc_export_parse(struct cache_detail *cd, char *mesg, int mlen) nd.dentry = NULL; exp.ex_path = NULL; + /* fs locations */ + exp.ex_fslocs.locations = NULL; + exp.ex_fslocs.locations_count = 0; + exp.ex_fslocs.migrated = 0; + + exp.ex_uuid = NULL; + if (mesg[mlen-1] != '\n') return -EINVAL; mesg[mlen-1] = 0; @@ -509,13 +516,6 @@ static int svc_export_parse(struct cache_detail *cd, char *mesg, int mlen) if (exp.h.expiry_time == 0) goto out; - /* fs locations */ - exp.ex_fslocs.locations = NULL; - exp.ex_fslocs.locations_count = 0; - exp.ex_fslocs.migrated = 0; - - exp.ex_uuid = NULL; - /* flags */ err = get_int(&mesg, &an_int); if (err == -ENOENT) diff --git a/fs/nfsd/nfs3proc.c b/fs/nfsd/nfs3proc.c index 7f5bad0393b1..eac82830bfd7 100644 --- a/fs/nfsd/nfs3proc.c +++ b/fs/nfsd/nfs3proc.c @@ -177,7 +177,7 @@ nfsd3_proc_read(struct svc_rqst *rqstp, struct nfsd3_readargs *argp, if (max_blocksize < resp->count) resp->count = max_blocksize; - svc_reserve(rqstp, ((1 + NFS3_POST_OP_ATTR_WORDS + 3)<<2) + resp->count +4); + svc_reserve_auth(rqstp, ((1 + NFS3_POST_OP_ATTR_WORDS + 3)<<2) + resp->count +4); fh_copy(&resp->fh, &argp->fh); nfserr = nfsd_read(rqstp, &resp->fh, NULL, diff --git a/fs/nfsd/nfs3xdr.c b/fs/nfsd/nfs3xdr.c index 7e4bb0af24d7..10f6e7dcf633 100644 --- a/fs/nfsd/nfs3xdr.c +++ b/fs/nfsd/nfs3xdr.c @@ -239,7 +239,7 @@ static __be32 * encode_post_op_attr(struct svc_rqst *rqstp, __be32 *p, struct svc_fh *fhp) { struct dentry *dentry = fhp->fh_dentry; - if (dentry && dentry->d_inode != NULL) { + if (dentry && dentry->d_inode) { int err; struct kstat stat; @@ -300,9 +300,9 @@ int nfs3svc_decode_sattrargs(struct svc_rqst *rqstp, __be32 *p, struct nfsd3_sattrargs *args) { - if (!(p = decode_fh(p, &args->fh)) - || !(p = decode_sattr3(p, &args->attrs))) + if (!(p = decode_fh(p, &args->fh))) return 0; + p = decode_sattr3(p, &args->attrs); if ((args->check_guard = ntohl(*p++)) != 0) { struct timespec time; @@ -343,9 +343,9 @@ nfs3svc_decode_readargs(struct svc_rqst *rqstp, __be32 *p, int v,pn; u32 max_blocksize = svc_max_payload(rqstp); - if (!(p = decode_fh(p, &args->fh)) - || !(p = xdr_decode_hyper(p, &args->offset))) + if (!(p = decode_fh(p, &args->fh))) return 0; + p = xdr_decode_hyper(p, &args->offset); len = args->count = ntohl(*p++); @@ -369,28 +369,44 @@ int nfs3svc_decode_writeargs(struct svc_rqst *rqstp, __be32 *p, struct nfsd3_writeargs *args) { - unsigned int len, v, hdr; + unsigned int len, v, hdr, dlen; u32 max_blocksize = svc_max_payload(rqstp); - if (!(p = decode_fh(p, &args->fh)) - || !(p = xdr_decode_hyper(p, &args->offset))) + if (!(p = decode_fh(p, &args->fh))) return 0; + p = xdr_decode_hyper(p, &args->offset); args->count = ntohl(*p++); args->stable = ntohl(*p++); len = args->len = ntohl(*p++); + /* + * The count must equal the amount of data passed. + */ + if (args->count != args->len) + return 0; + /* + * Check to make sure that we got the right number of + * bytes. + */ hdr = (void*)p - rqstp->rq_arg.head[0].iov_base; - if (rqstp->rq_arg.len < hdr || - rqstp->rq_arg.len - hdr < len) + dlen = rqstp->rq_arg.head[0].iov_len + rqstp->rq_arg.page_len + - hdr; + /* + * Round the length of the data which was specified up to + * the next multiple of XDR units and then compare that + * against the length which was actually received. + */ + if (dlen != XDR_QUADLEN(len)*4) return 0; + if (args->count > max_blocksize) { + args->count = max_blocksize; + len = args->len = max_blocksize; + } rqstp->rq_vec[0].iov_base = (void*)p; rqstp->rq_vec[0].iov_len = rqstp->rq_arg.head[0].iov_len - hdr; - - if (len > max_blocksize) - len = max_blocksize; - v= 0; + v = 0; while (len > rqstp->rq_vec[v].iov_len) { len -= rqstp->rq_vec[v].iov_len; v++; @@ -398,9 +414,8 @@ nfs3svc_decode_writeargs(struct svc_rqst *rqstp, __be32 *p, rqstp->rq_vec[v].iov_len = PAGE_SIZE; } rqstp->rq_vec[v].iov_len = len; - args->vlen = v+1; - - return args->count == args->len && rqstp->rq_vec[0].iov_len > 0; + args->vlen = v + 1; + return 1; } int @@ -414,8 +429,7 @@ nfs3svc_decode_createargs(struct svc_rqst *rqstp, __be32 *p, switch (args->createmode = ntohl(*p++)) { case NFS3_CREATE_UNCHECKED: case NFS3_CREATE_GUARDED: - if (!(p = decode_sattr3(p, &args->attrs))) - return 0; + p = decode_sattr3(p, &args->attrs); break; case NFS3_CREATE_EXCLUSIVE: args->verf = p; @@ -431,10 +445,10 @@ int nfs3svc_decode_mkdirargs(struct svc_rqst *rqstp, __be32 *p, struct nfsd3_createargs *args) { - if (!(p = decode_fh(p, &args->fh)) - || !(p = decode_filename(p, &args->name, &args->len)) - || !(p = decode_sattr3(p, &args->attrs))) + if (!(p = decode_fh(p, &args->fh)) || + !(p = decode_filename(p, &args->name, &args->len))) return 0; + p = decode_sattr3(p, &args->attrs); return xdr_argsize_check(rqstp, p); } @@ -448,11 +462,12 @@ nfs3svc_decode_symlinkargs(struct svc_rqst *rqstp, __be32 *p, char *old, *new; struct kvec *vec; - if (!(p = decode_fh(p, &args->ffh)) - || !(p = decode_filename(p, &args->fname, &args->flen)) - || !(p = decode_sattr3(p, &args->attrs)) + if (!(p = decode_fh(p, &args->ffh)) || + !(p = decode_filename(p, &args->fname, &args->flen)) ) return 0; + p = decode_sattr3(p, &args->attrs); + /* now decode the pathname, which might be larger than the first page. * As we have to check for nul's anyway, we copy it into a new page * This page appears in the rq_res.pages list, but as pages_len is always @@ -502,10 +517,8 @@ nfs3svc_decode_mknodargs(struct svc_rqst *rqstp, __be32 *p, args->ftype = ntohl(*p++); if (args->ftype == NF3BLK || args->ftype == NF3CHR - || args->ftype == NF3SOCK || args->ftype == NF3FIFO) { - if (!(p = decode_sattr3(p, &args->attrs))) - return 0; - } + || args->ftype == NF3SOCK || args->ftype == NF3FIFO) + p = decode_sattr3(p, &args->attrs); if (args->ftype == NF3BLK || args->ftype == NF3CHR) { args->major = ntohl(*p++); diff --git a/fs/nfsd/nfs4acl.c b/fs/nfsd/nfs4acl.c index 673a53c014a3..cc3b7badd486 100644 --- a/fs/nfsd/nfs4acl.c +++ b/fs/nfsd/nfs4acl.c @@ -137,7 +137,6 @@ struct ace_container { static short ace2type(struct nfs4_ace *); static void _posix_to_nfsv4_one(struct posix_acl *, struct nfs4_acl *, unsigned int); -void nfs4_acl_add_ace(struct nfs4_acl *, u32, u32, u32, int, uid_t); struct nfs4_acl * nfs4_acl_posix_to_nfsv4(struct posix_acl *pacl, struct posix_acl *dpacl, @@ -785,21 +784,6 @@ nfs4_acl_new(int n) return acl; } -void -nfs4_acl_add_ace(struct nfs4_acl *acl, u32 type, u32 flag, u32 access_mask, - int whotype, uid_t who) -{ - struct nfs4_ace *ace = acl->aces + acl->naces; - - ace->type = type; - ace->flag = flag; - ace->access_mask = access_mask; - ace->whotype = whotype; - ace->who = who; - - acl->naces++; -} - static struct { char *string; int stringlen; @@ -851,6 +835,5 @@ nfs4_acl_write_who(int who, char *p) } EXPORT_SYMBOL(nfs4_acl_new); -EXPORT_SYMBOL(nfs4_acl_add_ace); EXPORT_SYMBOL(nfs4_acl_get_whotype); EXPORT_SYMBOL(nfs4_acl_write_who); diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c index 678f3be88ac0..3cc8ce422ab1 100644 --- a/fs/nfsd/nfs4state.c +++ b/fs/nfsd/nfs4state.c @@ -1326,8 +1326,6 @@ do_recall(void *__dp) { struct nfs4_delegation *dp = __dp; - daemonize("nfsv4-recall"); - nfsd4_cb_recall(dp); return 0; } diff --git a/fs/nfsd/nfsfh.c b/fs/nfsd/nfsfh.c index 739dd3c5c3b2..6ca2d24fc216 100644 --- a/fs/nfsd/nfsfh.c +++ b/fs/nfsd/nfsfh.c @@ -323,7 +323,7 @@ fh_compose(struct svc_fh *fhp, struct svc_export *exp, struct dentry *dentry, * */ - u8 version = 1; + u8 version; u8 fsid_type = 0; struct inode * inode = dentry->d_inode; struct dentry *parent = dentry->d_parent; @@ -341,15 +341,59 @@ fh_compose(struct svc_fh *fhp, struct svc_export *exp, struct dentry *dentry, * the reference filehandle (if it is in the same export) * or the export options. */ + retry: + version = 1; if (ref_fh && ref_fh->fh_export == exp) { version = ref_fh->fh_handle.fh_version; - if (version == 0xca) + fsid_type = ref_fh->fh_handle.fh_fsid_type; + + if (ref_fh == fhp) + fh_put(ref_fh); + ref_fh = NULL; + + switch (version) { + case 0xca: fsid_type = FSID_DEV; - else - fsid_type = ref_fh->fh_handle.fh_fsid_type; - /* We know this version/type works for this export - * so there is no need for further checks. + break; + case 1: + break; + default: + goto retry; + } + + /* Need to check that this type works for this + * export point. As the fsid -> filesystem mapping + * was guided by user-space, there is no guarantee + * that the filesystem actually supports that fsid + * type. If it doesn't we loop around again without + * ref_fh set. */ + switch(fsid_type) { + case FSID_DEV: + if (!old_valid_dev(ex_dev)) + goto retry; + /* FALL THROUGH */ + case FSID_MAJOR_MINOR: + case FSID_ENCODE_DEV: + if (!(exp->ex_dentry->d_inode->i_sb->s_type->fs_flags + & FS_REQUIRES_DEV)) + goto retry; + break; + case FSID_NUM: + if (! (exp->ex_flags & NFSEXP_FSID)) + goto retry; + break; + case FSID_UUID8: + case FSID_UUID16: + if (!root_export) + goto retry; + /* fall through */ + case FSID_UUID4_INUM: + case FSID_UUID16_INUM: + if (exp->ex_uuid == NULL) + goto retry; + break; + } } else if (exp->ex_uuid) { if (fhp->fh_maxsize >= 64) { if (root_export) diff --git a/fs/nfsd/nfsproc.c b/fs/nfsd/nfsproc.c index 5cc2eec981b8..b2c7147aa921 100644 --- a/fs/nfsd/nfsproc.c +++ b/fs/nfsd/nfsproc.c @@ -155,7 +155,7 @@ nfsd_proc_read(struct svc_rqst *rqstp, struct nfsd_readargs *argp, argp->count); argp->count = NFSSVC_MAXBLKSIZE_V2; } - svc_reserve(rqstp, (19<<2) + argp->count + 4); + svc_reserve_auth(rqstp, (19<<2) + argp->count + 4); resp->count = argp->count; nfserr = nfsd_read(rqstp, fh_copy(&resp->fh, &argp->fh), NULL, diff --git a/fs/nfsd/nfsxdr.c b/fs/nfsd/nfsxdr.c index 0c24b9e24fe8..cb3e7fadb772 100644 --- a/fs/nfsd/nfsxdr.c +++ b/fs/nfsd/nfsxdr.c @@ -231,9 +231,10 @@ int nfssvc_decode_sattrargs(struct svc_rqst *rqstp, __be32 *p, struct nfsd_sattrargs *args) { - if (!(p = decode_fh(p, &args->fh)) - || !(p = decode_sattr(p, &args->attrs))) + p = decode_fh(p, &args->fh); + if (!p) return 0; + p = decode_sattr(p, &args->attrs); return xdr_argsize_check(rqstp, p); } @@ -284,8 +285,9 @@ int nfssvc_decode_writeargs(struct svc_rqst *rqstp, __be32 *p, struct nfsd_writeargs *args) { - unsigned int len; + unsigned int len, hdr, dlen; int v; + if (!(p = decode_fh(p, &args->fh))) return 0; @@ -293,11 +295,30 @@ nfssvc_decode_writeargs(struct svc_rqst *rqstp, __be32 *p, args->offset = ntohl(*p++); /* offset */ p++; /* totalcount */ len = args->len = ntohl(*p++); - rqstp->rq_vec[0].iov_base = (void*)p; - rqstp->rq_vec[0].iov_len = rqstp->rq_arg.head[0].iov_len - - (((void*)p) - rqstp->rq_arg.head[0].iov_base); + /* + * The protocol specifies a maximum of 8192 bytes. + */ if (len > NFSSVC_MAXBLKSIZE_V2) - len = NFSSVC_MAXBLKSIZE_V2; + return 0; + + /* + * Check to make sure that we got the right number of + * bytes. + */ + hdr = (void*)p - rqstp->rq_arg.head[0].iov_base; + dlen = rqstp->rq_arg.head[0].iov_len + rqstp->rq_arg.page_len + - hdr; + + /* + * Round the length of the data which was specified up to + * the next multiple of XDR units and then compare that + * against the length which was actually received. + */ + if (dlen != XDR_QUADLEN(len)*4) + return 0; + + rqstp->rq_vec[0].iov_base = (void*)p; + rqstp->rq_vec[0].iov_len = rqstp->rq_arg.head[0].iov_len - hdr; v = 0; while (len > rqstp->rq_vec[v].iov_len) { len -= rqstp->rq_vec[v].iov_len; @@ -306,18 +327,18 @@ nfssvc_decode_writeargs(struct svc_rqst *rqstp, __be32 *p, rqstp->rq_vec[v].iov_len = PAGE_SIZE; } rqstp->rq_vec[v].iov_len = len; - args->vlen = v+1; - return rqstp->rq_vec[0].iov_len > 0; + args->vlen = v + 1; + return 1; } int nfssvc_decode_createargs(struct svc_rqst *rqstp, __be32 *p, struct nfsd_createargs *args) { - if (!(p = decode_fh(p, &args->fh)) - || !(p = decode_filename(p, &args->name, &args->len)) - || !(p = decode_sattr(p, &args->attrs))) + if ( !(p = decode_fh(p, &args->fh)) + || !(p = decode_filename(p, &args->name, &args->len))) return 0; + p = decode_sattr(p, &args->attrs); return xdr_argsize_check(rqstp, p); } @@ -361,11 +382,11 @@ int nfssvc_decode_symlinkargs(struct svc_rqst *rqstp, __be32 *p, struct nfsd_symlinkargs *args) { - if (!(p = decode_fh(p, &args->ffh)) - || !(p = decode_filename(p, &args->fname, &args->flen)) - || !(p = decode_pathname(p, &args->tname, &args->tlen)) - || !(p = decode_sattr(p, &args->attrs))) + if ( !(p = decode_fh(p, &args->ffh)) + || !(p = decode_filename(p, &args->fname, &args->flen)) + || !(p = decode_pathname(p, &args->tname, &args->tlen))) return 0; + p = decode_sattr(p, &args->attrs); return xdr_argsize_check(rqstp, p); } diff --git a/fs/reiserfs/file.c b/fs/reiserfs/file.c index ab45db529c80..9e451a68580f 100644 --- a/fs/reiserfs/file.c +++ b/fs/reiserfs/file.c @@ -1059,20 +1059,12 @@ static int reiserfs_prepare_file_region_for_write(struct inode *inode maping blocks, since there is none, so we just zero out remaining parts of first and last pages in write area (if needed) */ if ((pos & ~((loff_t) PAGE_CACHE_SIZE - 1)) > inode->i_size) { - if (from != 0) { /* First page needs to be partially zeroed */ - char *kaddr = kmap_atomic(prepared_pages[0], KM_USER0); - memset(kaddr, 0, from); - kunmap_atomic(kaddr, KM_USER0); - flush_dcache_page(prepared_pages[0]); - } - if (to != PAGE_CACHE_SIZE) { /* Last page needs to be partially zeroed */ - char *kaddr = - kmap_atomic(prepared_pages[num_pages - 1], - KM_USER0); - memset(kaddr + to, 0, PAGE_CACHE_SIZE - to); - kunmap_atomic(kaddr, KM_USER0); - flush_dcache_page(prepared_pages[num_pages - 1]); - } + if (from != 0) /* First page needs to be partially zeroed */ + zero_user_page(prepared_pages[0], 0, from, KM_USER0); + + if (to != PAGE_CACHE_SIZE) /* Last page needs to be partially zeroed */ + zero_user_page(prepared_pages[num_pages-1], to, + PAGE_CACHE_SIZE - to, KM_USER0); /* Since all blocks are new - use already calculated value */ return blocks; @@ -1199,13 +1191,9 @@ static int reiserfs_prepare_file_region_for_write(struct inode *inode ll_rw_block(READ, 1, &bh); *wait_bh++ = bh; } else { /* Not mapped, zero it */ - char *kaddr = - kmap_atomic(prepared_pages[0], - KM_USER0); - memset(kaddr + block_start, 0, - from - block_start); - kunmap_atomic(kaddr, KM_USER0); - flush_dcache_page(prepared_pages[0]); + zero_user_page(prepared_pages[0], + block_start, + from - block_start, KM_USER0); set_buffer_uptodate(bh); } } @@ -1237,13 +1225,8 @@ static int reiserfs_prepare_file_region_for_write(struct inode *inode ll_rw_block(READ, 1, &bh); *wait_bh++ = bh; } else { /* Not mapped, zero it */ - char *kaddr = - kmap_atomic(prepared_pages - [num_pages - 1], - KM_USER0); - memset(kaddr + to, 0, block_end - to); - kunmap_atomic(kaddr, KM_USER0); - flush_dcache_page(prepared_pages[num_pages - 1]); + zero_user_page(prepared_pages[num_pages-1], + to, block_end - to, KM_USER0); set_buffer_uptodate(bh); } } diff --git a/fs/reiserfs/inode.c b/fs/reiserfs/inode.c index 9fcbfe316977..1272d11399fb 100644 --- a/fs/reiserfs/inode.c +++ b/fs/reiserfs/inode.c @@ -2148,13 +2148,8 @@ int reiserfs_truncate_file(struct inode *p_s_inode, int update_timestamps) length = offset & (blocksize - 1); /* if we are not on a block boundary */ if (length) { - char *kaddr; - length = blocksize - length; - kaddr = kmap_atomic(page, KM_USER0); - memset(kaddr + offset, 0, length); - flush_dcache_page(page); - kunmap_atomic(kaddr, KM_USER0); + zero_user_page(page, offset, length, KM_USER0); if (buffer_mapped(bh) && bh->b_blocknr != 0) { mark_buffer_dirty(bh); } @@ -2370,7 +2365,6 @@ static int reiserfs_write_full_page(struct page *page, ** last byte in the file */ if (page->index >= end_index) { - char *kaddr; unsigned last_offset; last_offset = inode->i_size & (PAGE_CACHE_SIZE - 1); @@ -2379,10 +2373,7 @@ static int reiserfs_write_full_page(struct page *page, unlock_page(page); return 0; } - kaddr = kmap_atomic(page, KM_USER0); - memset(kaddr + last_offset, 0, PAGE_CACHE_SIZE - last_offset); - flush_dcache_page(page); - kunmap_atomic(kaddr, KM_USER0); + zero_user_page(page, last_offset, PAGE_CACHE_SIZE - last_offset, KM_USER0); } bh = head; block = page->index << (PAGE_CACHE_SHIFT - s->s_blocksize_bits); diff --git a/fs/reiserfs/journal.c b/fs/reiserfs/journal.c index e073fd86cf60..f25086aeef5f 100644 --- a/fs/reiserfs/journal.c +++ b/fs/reiserfs/journal.c @@ -1110,7 +1110,7 @@ static int flush_commit_list(struct super_block *s, if (!barrier) { /* If there was a write error in the journal - we can't commit * this transaction - it will be invalid and, if successful, - * will just end up propogating the write error out to + * will just end up propagating the write error out to * the file system. */ if (likely(!retval && !reiserfs_is_journal_aborted (journal))) { if (buffer_dirty(jl->j_commit_bh)) @@ -1125,7 +1125,7 @@ static int flush_commit_list(struct super_block *s, /* If there was a write error in the journal - we can't commit this * transaction - it will be invalid and, if successful, will just end - * up propogating the write error out to the filesystem. */ + * up propagating the write error out to the filesystem. */ if (unlikely(!buffer_uptodate(jl->j_commit_bh))) { #ifdef CONFIG_REISERFS_CHECK reiserfs_warning(s, "journal-615: buffer write failed"); diff --git a/fs/select.c b/fs/select.c index d86224154dec..a974082b0824 100644 --- a/fs/select.c +++ b/fs/select.c @@ -64,7 +64,7 @@ EXPORT_SYMBOL(poll_initwait); static void free_poll_entry(struct poll_table_entry *entry) { - remove_wait_queue(entry->wait_address,&entry->wait); + remove_wait_queue(entry->wait_address, &entry->wait); fput(entry->filp); } @@ -128,7 +128,7 @@ static void __pollwait(struct file *filp, wait_queue_head_t *wait_address, entry->filp = filp; entry->wait_address = wait_address; init_waitqueue_entry(&entry->wait, current); - add_wait_queue(wait_address,&entry->wait); + add_wait_queue(wait_address, &entry->wait); } #define FDS_IN(fds, n) (fds->in + n) diff --git a/fs/sysfs/file.c b/fs/sysfs/file.c index 0e637adc2b87..b502c7197ec0 100644 --- a/fs/sysfs/file.c +++ b/fs/sysfs/file.c @@ -111,36 +111,6 @@ static int fill_read_buffer(struct dentry * dentry, struct sysfs_buffer * buffer return ret; } - -/** - * flush_read_buffer - push buffer to userspace. - * @buffer: data buffer for file. - * @buf: user-passed buffer. - * @count: number of bytes requested. - * @ppos: file position. - * - * Copy the buffer we filled in fill_read_buffer() to userspace. - * This is done at the reader's leisure, copying and advancing - * the amount they specify each time. - * This may be called continuously until the buffer is empty. - */ -static int flush_read_buffer(struct sysfs_buffer * buffer, char __user * buf, - size_t count, loff_t * ppos) -{ - int error; - - if (*ppos > buffer->count) - return 0; - - if (count > (buffer->count - *ppos)) - count = buffer->count - *ppos; - - error = copy_to_user(buf,buffer->page + *ppos,count); - if (!error) - *ppos += count; - return error ? -EFAULT : count; -} - /** * sysfs_read_file - read an attribute. * @file: file pointer. @@ -177,7 +147,8 @@ sysfs_read_file(struct file *file, char __user *buf, size_t count, loff_t *ppos) } pr_debug("%s: count = %zd, ppos = %lld, buf = %s\n", __FUNCTION__, count, *ppos, buffer->page); - retval = flush_read_buffer(buffer,buf,count,ppos); + retval = simple_read_from_buffer(buf, count, ppos, buffer->page, + buffer->count); out: up(&buffer->sem); return retval; diff --git a/fs/xfs/xfs_itable.c b/fs/xfs/xfs_itable.c index 7775ddc0b3c6..e725ddd3de5f 100644 --- a/fs/xfs/xfs_itable.c +++ b/fs/xfs/xfs_itable.c @@ -809,7 +809,7 @@ xfs_inumbers( xfs_buf_relse(agbp); agbp = NULL; /* - * Move up the the last inode in the current + * Move up the last inode in the current * chunk. The lookup_ge will always get * us the first inode in the next chunk. */ diff --git a/fs/xfs/xfs_mount.c b/fs/xfs/xfs_mount.c index f5aa3ef855fb..a96bde6df96d 100644 --- a/fs/xfs/xfs_mount.c +++ b/fs/xfs/xfs_mount.c @@ -1734,11 +1734,13 @@ xfs_icsb_cpu_notify( per_cpu_ptr(mp->m_sb_cnts, (unsigned long)hcpu); switch (action) { case CPU_UP_PREPARE: + case CPU_UP_PREPARE_FROZEN: /* Easy Case - initialize the area and locks, and * then rebalance when online does everything else for us. */ memset(cntp, 0, sizeof(xfs_icsb_cnts_t)); break; case CPU_ONLINE: + case CPU_ONLINE_FROZEN: xfs_icsb_lock(mp); xfs_icsb_balance_counter(mp, XFS_SBS_ICOUNT, 0, 0); xfs_icsb_balance_counter(mp, XFS_SBS_IFREE, 0, 0); @@ -1746,6 +1748,7 @@ xfs_icsb_cpu_notify( xfs_icsb_unlock(mp); break; case CPU_DEAD: + case CPU_DEAD_FROZEN: /* Disable all the counters, then fold the dead cpu's * count into the total on the global superblock and * re-enable the counters. */ diff --git a/include/asm-alpha/smp.h b/include/asm-alpha/smp.h index a1a1eca6be45..286e1d844f63 100644 --- a/include/asm-alpha/smp.h +++ b/include/asm-alpha/smp.h @@ -51,6 +51,7 @@ int smp_call_function_on_cpu(void (*func) (void *info), void *info,int retry, in #else /* CONFIG_SMP */ +#define hard_smp_processor_id() 0 #define smp_call_function_on_cpu(func,info,retry,wait,cpu) ({ 0; }) #endif /* CONFIG_SMP */ diff --git a/include/asm-alpha/thread_info.h b/include/asm-alpha/thread_info.h index eeb3bef91e11..f4defc2bd3fb 100644 --- a/include/asm-alpha/thread_info.h +++ b/include/asm-alpha/thread_info.h @@ -97,7 +97,7 @@ register struct thread_info *__current_thread_info __asm__("$8"); 1 << TIF_UAC_SIGBUS) #define SET_UNALIGN_CTL(task,value) ({ \ - (task)->thread_info->flags = (((task)->thread_info->flags & \ + task_thread_info(task)->flags = ((task_thread_info(task)->flags & \ ~ALPHA_UAC_MASK) \ | (((value) << ALPHA_UAC_SHIFT) & (1<<TIF_UAC_NOPRINT))\ | (((value) << (ALPHA_UAC_SHIFT + 1)) & (1<<TIF_UAC_SIGBUS)) \ @@ -105,11 +105,11 @@ register struct thread_info *__current_thread_info __asm__("$8"); 0; }) #define GET_UNALIGN_CTL(task,value) ({ \ - put_user(((task)->thread_info->flags & (1 << TIF_UAC_NOPRINT)) \ + put_user((task_thread_info(task)->flags & (1 << TIF_UAC_NOPRINT))\ >> ALPHA_UAC_SHIFT \ - | ((task)->thread_info->flags & (1 << TIF_UAC_SIGBUS)) \ + | (task_thread_info(task)->flags & (1 << TIF_UAC_SIGBUS))\ >> (ALPHA_UAC_SHIFT + 1) \ - | ((task)->thread_info->flags & (1 << TIF_UAC_NOFIX)) \ + | (task_thread_info(task)->flags & (1 << TIF_UAC_NOFIX))\ >> (ALPHA_UAC_SHIFT - 1), \ (int __user *)(value)); \ }) diff --git a/include/asm-arm/arch-at91/cpu.h b/include/asm-arm/arch-at91/cpu.h index d464ca58cdbc..7ef4eebe9f8e 100644 --- a/include/asm-arm/arch-at91/cpu.h +++ b/include/asm-arm/arch-at91/cpu.h @@ -68,4 +68,10 @@ static inline unsigned long at91_arch_identify(void) #define cpu_is_at91sam9263() (0) #endif +/* + * Since this is ARM, we will never run on any AVR32 CPU. But these + * definitions may reduce clutter in common drivers. + */ +#define cpu_is_at32ap7000() (0) + #endif diff --git a/include/asm-arm/arch-imx/imx-regs.h b/include/asm-arm/arch-imx/imx-regs.h index de6494a4dc6b..30de404c61f5 100644 --- a/include/asm-arm/arch-imx/imx-regs.h +++ b/include/asm-arm/arch-imx/imx-regs.h @@ -297,7 +297,7 @@ #define SAR(x) __REG2( IMX_DMAC_BASE + 0x80, (x) << 6) /* Source Address Registers */ #define DAR(x) __REG2( IMX_DMAC_BASE + 0x84, (x) << 6) /* Destination Address Registers */ #define CNTR(x) __REG2( IMX_DMAC_BASE + 0x88, (x) << 6) /* Count Registers */ -#define CCR(x) __REG2( IMX_DMAC_BASE + 0x8c, (x) << 6) /* Control Registers */ +#define CCR(x) __REG2( IMX_DMAC_BASE + 0x8c, (x) << 6) /* Control Registers */ #define RSSR(x) __REG2( IMX_DMAC_BASE + 0x90, (x) << 6) /* Request source select Registers */ #define BLR(x) __REG2( IMX_DMAC_BASE + 0x94, (x) << 6) /* Burst length Registers */ #define RTOR(x) __REG2( IMX_DMAC_BASE + 0x98, (x) << 6) /* Request timeout Registers */ diff --git a/include/asm-arm/arch-integrator/platform.h b/include/asm-arm/arch-integrator/platform.h index 96ad3d2a66d1..83c4c1ceb411 100644 --- a/include/asm-arm/arch-integrator/platform.h +++ b/include/asm-arm/arch-integrator/platform.h @@ -17,7 +17,7 @@ * from .s file by awk -f s2h.awk */ /************************************************************************** - * * Copyright © ARM Limited 1998. All rights reserved. + * * Copyright © ARM Limited 1998. All rights reserved. * ***********************************************************************/ /* ************************************************************************ * diff --git a/include/asm-arm/arch-iop32x/glantank.h b/include/asm-arm/arch-iop32x/glantank.h index 3b065618dd00..bf0665acc1c1 100644 --- a/include/asm-arm/arch-iop32x/glantank.h +++ b/include/asm-arm/arch-iop32x/glantank.h @@ -1,5 +1,5 @@ /* - * include/asm/arch-iop32x/glantank.h + * include/asm-arm/arch-iop32x/glantank.h * * IO-Data GLAN Tank board registers */ diff --git a/include/asm-arm/arch-iop32x/n2100.h b/include/asm-arm/arch-iop32x/n2100.h index fed31a648425..77a8af476629 100644 --- a/include/asm-arm/arch-iop32x/n2100.h +++ b/include/asm-arm/arch-iop32x/n2100.h @@ -1,5 +1,5 @@ /* - * include/asm/arch-iop32x/n2100.h + * include/asm-arm/arch-iop32x/n2100.h * * Thecus N2100 board registers */ diff --git a/include/asm-arm/arch-omap/board.h b/include/asm-arm/arch-omap/board.h index edf1dc6ad919..4fd717e626a2 100644 --- a/include/asm-arm/arch-omap/board.h +++ b/include/asm-arm/arch-omap/board.h @@ -4,7 +4,7 @@ * Information structures for board-specific data * * Copyright (C) 2004 Nokia Corporation - * Written by Juha Yrjölä <juha.yrjola@nokia.com> + * Written by Juha Yrjölä <juha.yrjola@nokia.com> */ #ifndef _OMAP_BOARD_H diff --git a/include/asm-arm/arch-omap/dma.h b/include/asm-arm/arch-omap/dma.h index d591d0585bba..f7774192a41e 100644 --- a/include/asm-arm/arch-omap/dma.h +++ b/include/asm-arm/arch-omap/dma.h @@ -2,7 +2,7 @@ * linux/include/asm-arm/arch-omap/dma.h * * Copyright (C) 2003 Nokia Corporation - * Author: Juha Yrjölä <juha.yrjola@nokia.com> + * Author: Juha Yrjölä <juha.yrjola@nokia.com> * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by diff --git a/include/asm-arm/arch-omap/gpio.h b/include/asm-arm/arch-omap/gpio.h index 590917efc94a..97b397dd7e87 100644 --- a/include/asm-arm/arch-omap/gpio.h +++ b/include/asm-arm/arch-omap/gpio.h @@ -5,7 +5,7 @@ * * Copyright (C) 2003-2005 Nokia Corporation * - * Written by Juha Yrjölä <juha.yrjola@nokia.com> + * Written by Juha Yrjölä <juha.yrjola@nokia.com> * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by diff --git a/include/asm-arm/arch-s3c2410/regs-power.h b/include/asm-arm/arch-s3c2410/regs-power.h index 6c319ea2afac..94ff96505b6a 100644 --- a/include/asm-arm/arch-s3c2410/regs-power.h +++ b/include/asm-arm/arch-s3c2410/regs-power.h @@ -1,4 +1,4 @@ -/* linux/include/asm/arch-s3c2410/regs-power.h +/* linux/include/asm-arm/arch-s3c2410/regs-power.h * * Copyright (c) 2003,2004,2005,2006 Simtec Electronics <linux@simtec.co.uk> * http://armlinux.simtec.co.uk/ diff --git a/include/asm-arm/arch-s3c2410/regs-s3c2443-clock.h b/include/asm-arm/arch-s3c2410/regs-s3c2443-clock.h index ff0536d2de42..cd9e26568f85 100644 --- a/include/asm-arm/arch-s3c2410/regs-s3c2443-clock.h +++ b/include/asm-arm/arch-s3c2410/regs-s3c2443-clock.h @@ -1,4 +1,4 @@ -/* linux/include/asm-arm/arch-s3c2410/regs-clock.h +/* linux/include/asm-arm/arch-s3c2410/regs-s3c2443-clock.h * * Copyright (c) 2007 Simtec Electronics * Ben Dooks <ben@simtec.co.uk> diff --git a/include/asm-arm/arch-s3c2410/regs-watchdog.h b/include/asm-arm/arch-s3c2410/regs-watchdog.h index f4fff448c7bd..a9c5d491bdb6 100644 --- a/include/asm-arm/arch-s3c2410/regs-watchdog.h +++ b/include/asm-arm/arch-s3c2410/regs-watchdog.h @@ -1,4 +1,4 @@ -/* linux/include/asm/arch-s3c2410/regs-watchdog.h +/* linux/include/asm-arm/arch-s3c2410/regs-watchdog.h * * Copyright (c) 2003 Simtec Electronics <linux@simtec.co.uk> * http://www.simtec.co.uk/products/SWLINUX/ diff --git a/include/asm-arm/arch-s3c2410/udc.h b/include/asm-arm/arch-s3c2410/udc.h index e59ec339d614..b8aa6cb69b58 100644 --- a/include/asm-arm/arch-s3c2410/udc.h +++ b/include/asm-arm/arch-s3c2410/udc.h @@ -1,4 +1,4 @@ -/* linux/include/asm/arch-s3c2410/udc.h +/* linux/include/asm-arm/arch-s3c2410/udc.h * * Copyright (c) 2005 Arnaud Patard <arnaud.patard@rtp-net.org> * diff --git a/include/asm-arm/dma-mapping.h b/include/asm-arm/dma-mapping.h index abfb75b654c7..c8b5d0db0cf0 100644 --- a/include/asm-arm/dma-mapping.h +++ b/include/asm-arm/dma-mapping.h @@ -445,7 +445,7 @@ extern void dmabounce_unregister_dev(struct device *); * * The dmabounce routines call this function whenever a dma-mapping * is requested to determine whether a given buffer needs to be bounced - * or not. The function must return 0 if the the buffer is OK for + * or not. The function must return 0 if the buffer is OK for * DMA access and 1 if the buffer needs to be bounced. * */ diff --git a/include/asm-arm26/io.h b/include/asm-arm26/io.h index 2aa033bd0678..a5a7a4d5e09c 100644 --- a/include/asm-arm26/io.h +++ b/include/asm-arm26/io.h @@ -321,7 +321,7 @@ DECLARE_IO(int,l,"") #define mmiowb() -/* the following macro is depreciated */ +/* the following macro is deprecated */ #define ioaddr(port) __ioaddr((port)) /* diff --git a/include/asm-arm26/memory.h b/include/asm-arm26/memory.h index a65f10b80dfb..7c1e5be39060 100644 --- a/include/asm-arm26/memory.h +++ b/include/asm-arm26/memory.h @@ -60,7 +60,7 @@ static inline void *phys_to_virt(unsigned long x) /* * Virtual <-> DMA view memory address translations * Again, these are *only* valid on the kernel direct mapped RAM - * memory. Use of these is *depreciated*. + * memory. Use of these is *deprecated*. */ #define virt_to_bus(x) ((unsigned long)(x)) #define bus_to_virt(x) ((void *)((unsigned long)(x))) @@ -93,7 +93,7 @@ static inline void *phys_to_virt(unsigned long x) #define page_to_phys(page) (page_to_pfn(page) << PAGE_SHIFT) /* - * We should really eliminate virt_to_bus() here - it's depreciated. + * We should really eliminate virt_to_bus() here - it's deprecated. */ #define page_to_bus(page) (page_address(page)) diff --git a/include/asm-arm26/setup.h b/include/asm-arm26/setup.h index 1a867b4e8d53..10fd07c76662 100644 --- a/include/asm-arm26/setup.h +++ b/include/asm-arm26/setup.h @@ -70,7 +70,7 @@ struct tag_ramdisk { /* describes where the compressed ramdisk image lives */ /* * this one accidentally used virtual addresses - as such, - * its depreciated. + * it's deprecated. */ #define ATAG_INITRD 0x54410005 diff --git a/include/asm-avr32/arch-at32ap/cpu.h b/include/asm-avr32/arch-at32ap/cpu.h new file mode 100644 index 000000000000..2bdc5bd6f793 --- /dev/null +++ b/include/asm-avr32/arch-at32ap/cpu.h @@ -0,0 +1,33 @@ +/* + * AVR32 and (fake) AT91 CPU identification + * + * Copyright (C) 2007 Atmel Corporation + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ +#ifndef __ASM_ARCH_CPU_H +#define __ASM_ARCH_CPU_H + +/* + * Only AT32AP7000 is defined for now. We can identify the specific + * chip at runtime, but I'm not sure if it's really worth it. + */ +#ifdef CONFIG_CPU_AT32AP7000 +# define cpu_is_at32ap7000() (1) +#else +# define cpu_is_at32ap7000() (0) +#endif + +/* + * Since this is AVR32, we will never run on any AT91 CPU. But these + * definitions may reduce clutter in common drivers. + */ +#define cpu_is_at91rm9200() (0) +#define cpu_is_at91sam9xe() (0) +#define cpu_is_at91sam9260() (0) +#define cpu_is_at91sam9261() (0) +#define cpu_is_at91sam9263() (0) + +#endif /* __ASM_ARCH_CPU_H */ diff --git a/include/asm-avr32/setup.h b/include/asm-avr32/setup.h index 1ff1a217015d..b0828d43e110 100644 --- a/include/asm-avr32/setup.h +++ b/include/asm-avr32/setup.h @@ -110,7 +110,7 @@ struct tagtable { int (*parse)(struct tag *); }; -#define __tag __attribute_used__ __attribute__((__section__(".taglist"))) +#define __tag __attribute_used__ __attribute__((__section__(".taglist.init"))) #define __tagtable(tag, fn) \ static struct tagtable __tagtable_##fn __tag = { tag, fn } diff --git a/include/asm-avr32/unistd.h b/include/asm-avr32/unistd.h index 8f5120471819..2418cce624cc 100644 --- a/include/asm-avr32/unistd.h +++ b/include/asm-avr32/unistd.h @@ -295,8 +295,10 @@ #define __NR_shmdt 276 #define __NR_shmctl 277 +#define __NR_utimensat 278 + #ifdef __KERNEL__ -#define NR_syscalls 278 +#define NR_syscalls 279 #define __ARCH_WANT_IPC_PARSE_VERSION diff --git a/include/asm-blackfin/processor.h b/include/asm-blackfin/processor.h index 997465c93e82..0336ff132c16 100644 --- a/include/asm-blackfin/processor.h +++ b/include/asm-blackfin/processor.h @@ -58,10 +58,10 @@ do { \ (_regs)->pc = (_pc); \ if (current->mm) \ (_regs)->p5 = current->mm->start_data; \ - current->thread_info->l1_task_info.stack_start \ + task_thread_info(current)->l1_task_info.stack_start \ = (void *)current->mm->context.stack_start; \ - current->thread_info->l1_task_info.lowest_sp = (void *)(_usp); \ - memcpy(L1_SCRATCH_TASK_INFO, ¤t->thread_info->l1_task_info, \ + task_thread_info(current)->l1_task_info.lowest_sp = (void *)(_usp); \ + memcpy(L1_SCRATCH_TASK_INFO, &task_thread_info(current)->l1_task_info, \ sizeof(*L1_SCRATCH_TASK_INFO)); \ wrusp(_usp); \ } while(0) diff --git a/include/asm-blackfin/system.h b/include/asm-blackfin/system.h index b5bf6e7cb5e8..5e5f1a0566c0 100644 --- a/include/asm-blackfin/system.h +++ b/include/asm-blackfin/system.h @@ -239,9 +239,9 @@ asmlinkage struct task_struct *resume(struct task_struct *prev, struct task_stru #define switch_to(prev,next,last) \ do { \ - memcpy (&prev->thread_info->l1_task_info, L1_SCRATCH_TASK_INFO, \ + memcpy (&task_thread_info(prev)->l1_task_info, L1_SCRATCH_TASK_INFO, \ sizeof *L1_SCRATCH_TASK_INFO); \ - memcpy (L1_SCRATCH_TASK_INFO, &next->thread_info->l1_task_info, \ + memcpy (L1_SCRATCH_TASK_INFO, &task_thread_info(next)->l1_task_info, \ sizeof *L1_SCRATCH_TASK_INFO); \ (last) = resume (prev, next); \ } while (0) diff --git a/include/asm-frv/tlb.h b/include/asm-frv/tlb.h index f94fe5cb9b3a..cd458eb6d75e 100644 --- a/include/asm-frv/tlb.h +++ b/include/asm-frv/tlb.h @@ -3,7 +3,11 @@ #include <asm/tlbflush.h> +#ifdef CONFIG_MMU +extern void check_pgt_cache(void); +#else #define check_pgt_cache() do {} while(0) +#endif /* * we don't need any special per-pte or per-vma handling... diff --git a/include/asm-generic/bitops/atomic.h b/include/asm-generic/bitops/atomic.h index 78339319ba02..cd8a9641bd66 100644 --- a/include/asm-generic/bitops/atomic.h +++ b/include/asm-generic/bitops/atomic.h @@ -58,7 +58,7 @@ extern raw_spinlock_t __atomic_hash[ATOMIC_HASH_SIZE] __lock_aligned; * if you do not require the atomic guarantees. * * Note: there are no guarantees that this function will not be reordered - * on non x86 architectures, so if you are writting portable code, + * on non x86 architectures, so if you are writing portable code, * make sure not to rely on its reordering guarantees. * * Note that @nr may be almost arbitrarily large; this function is not diff --git a/include/asm-i386/bitops.h b/include/asm-i386/bitops.h index 273b50629357..a20fe9822f60 100644 --- a/include/asm-i386/bitops.h +++ b/include/asm-i386/bitops.h @@ -27,7 +27,7 @@ * if you do not require the atomic guarantees. * * Note: there are no guarantees that this function will not be reordered - * on non x86 architectures, so if you are writting portable code, + * on non x86 architectures, so if you are writing portable code, * make sure not to rely on its reordering guarantees. * * Note that @nr may be almost arbitrarily large; this function is not diff --git a/include/asm-i386/boot.h b/include/asm-i386/boot.h index e7686d0a8413..bd024ab4fe53 100644 --- a/include/asm-i386/boot.h +++ b/include/asm-i386/boot.h @@ -12,7 +12,7 @@ #define EXTENDED_VGA 0xfffe /* 80x50 mode */ #define ASK_VGA 0xfffd /* ask for it at bootup */ -/* Physical address where kenrel should be loaded. */ +/* Physical address where kernel should be loaded. */ #define LOAD_PHYSICAL_ADDR ((CONFIG_PHYSICAL_START \ + (CONFIG_PHYSICAL_ALIGN - 1)) \ & ~(CONFIG_PHYSICAL_ALIGN - 1)) diff --git a/include/asm-i386/mmzone.h b/include/asm-i386/mmzone.h index 3503ad66945e..118e9812778f 100644 --- a/include/asm-i386/mmzone.h +++ b/include/asm-i386/mmzone.h @@ -122,21 +122,21 @@ static inline int pfn_valid(int pfn) __alloc_bootmem_node(NODE_DATA(0), (x), PAGE_SIZE, 0) #define alloc_bootmem_node(pgdat, x) \ ({ \ - struct pglist_data __attribute__ ((unused)) \ + struct pglist_data __maybe_unused \ *__alloc_bootmem_node__pgdat = (pgdat); \ __alloc_bootmem_node(NODE_DATA(0), (x), SMP_CACHE_BYTES, \ __pa(MAX_DMA_ADDRESS)); \ }) #define alloc_bootmem_pages_node(pgdat, x) \ ({ \ - struct pglist_data __attribute__ ((unused)) \ + struct pglist_data __maybe_unused \ *__alloc_bootmem_node__pgdat = (pgdat); \ __alloc_bootmem_node(NODE_DATA(0), (x), PAGE_SIZE, \ __pa(MAX_DMA_ADDRESS)) \ }) #define alloc_bootmem_low_pages_node(pgdat, x) \ ({ \ - struct pglist_data __attribute__ ((unused)) \ + struct pglist_data __maybe_unused \ *__alloc_bootmem_node__pgdat = (pgdat); \ __alloc_bootmem_node(NODE_DATA(0), (x), PAGE_SIZE, 0); \ }) diff --git a/include/asm-i386/msr.h b/include/asm-i386/msr.h index 26861df52cc4..df21ea049369 100644 --- a/include/asm-i386/msr.h +++ b/include/asm-i386/msr.h @@ -86,62 +86,50 @@ static inline unsigned long long native_read_pmc(void) #define rdmsr(msr,val1,val2) \ do { \ - unsigned long long __val = native_read_msr(msr); \ - val1 = __val; \ - val2 = __val >> 32; \ + u64 __val = native_read_msr(msr); \ + (val1) = (u32)__val; \ + (val2) = (u32)(__val >> 32); \ } while(0) -#define wrmsr(msr,val1,val2) \ - native_write_msr(msr, ((unsigned long long)val2 << 32) | val1) - -#define rdmsrl(msr,val) \ - do { \ - (val) = native_read_msr(msr); \ - } while(0) - -static inline void wrmsrl (unsigned long msr, unsigned long long val) +static inline void wrmsr(u32 __msr, u32 __low, u32 __high) { - unsigned long lo, hi; - lo = (unsigned long) val; - hi = val >> 32; - wrmsr (msr, lo, hi); + native_write_msr(__msr, ((u64)__high << 32) | __low); } +#define rdmsrl(msr,val) \ + ((val) = native_read_msr(msr)) + +#define wrmsrl(msr,val) native_write_msr(msr, val) + /* wrmsr with exception handling */ -#define wrmsr_safe(msr,val1,val2) \ - (native_write_msr_safe(msr, ((unsigned long long)val2 << 32) | val1)) +static inline int wrmsr_safe(u32 __msr, u32 __low, u32 __high) +{ + return native_write_msr_safe(__msr, ((u64)__high << 32) | __low); +} /* rdmsr with exception handling */ #define rdmsr_safe(msr,p1,p2) \ ({ \ int __err; \ - unsigned long long __val = native_read_msr_safe(msr, &__err);\ - (*p1) = __val; \ - (*p2) = __val >> 32; \ + u64 __val = native_read_msr_safe(msr, &__err); \ + (*p1) = (u32)__val; \ + (*p2) = (u32)(__val >> 32); \ __err; \ }) -#define rdtsc(low,high) \ - do { \ - u64 _l = native_read_tsc(); \ - (low) = (u32)_l; \ - (high) = _l >> 32; \ - } while(0) - #define rdtscl(low) \ - do { \ - (low) = native_read_tsc(); \ - } while(0) + ((low) = (u32)native_read_tsc()) -#define rdtscll(val) ((val) = native_read_tsc()) +#define rdtscll(val) \ + ((val) = native_read_tsc()) #define write_tsc(val1,val2) wrmsr(0x10, val1, val2) #define rdpmc(counter,low,high) \ do { \ u64 _l = native_read_pmc(); \ - low = (u32)_l; \ - high = _l >> 32; \ + (low) = (u32)_l; \ + (high) = (u32)(_l >> 32); \ } while(0) #endif /* !CONFIG_PARAVIRT */ diff --git a/include/asm-i386/paravirt.h b/include/asm-i386/paravirt.h index e2e7f98723c5..bc5c12c13581 100644 --- a/include/asm-i386/paravirt.h +++ b/include/asm-i386/paravirt.h @@ -560,11 +560,6 @@ static inline u64 paravirt_read_tsc(void) { return PVOP_CALL0(u64, read_tsc); } -#define rdtsc(low,high) do { \ - u64 _l = paravirt_read_tsc(); \ - low = (u32)_l; \ - high = _l >> 32; \ -} while(0) #define rdtscl(low) do { \ u64 _l = paravirt_read_tsc(); \ diff --git a/include/asm-i386/smp.h b/include/asm-i386/smp.h index 090abc1da32a..0c7132787062 100644 --- a/include/asm-i386/smp.h +++ b/include/asm-i386/smp.h @@ -124,20 +124,6 @@ static inline int num_booting_cpus(void) return cpus_weight(cpu_callout_map); } -#ifdef CONFIG_X86_LOCAL_APIC - -#ifdef APIC_DEFINITION -extern int hard_smp_processor_id(void); -#else -#include <mach_apicdef.h> -static inline int hard_smp_processor_id(void) -{ - /* we don't want to mark this access volatile - bad code generation */ - return GET_APIC_ID(*(unsigned long *)(APIC_BASE+APIC_ID)); -} -#endif -#endif - extern int safe_smp_processor_id(void); extern int __cpu_disable(void); extern void __cpu_die(unsigned int cpu); @@ -152,10 +138,31 @@ extern unsigned int num_processors; #define NO_PROC_ID 0xFF /* No processor magic marker */ -#endif +#endif /* CONFIG_SMP */ #ifndef __ASSEMBLY__ +#ifdef CONFIG_X86_LOCAL_APIC + +#ifdef APIC_DEFINITION +extern int hard_smp_processor_id(void); +#else +#include <mach_apicdef.h> +static inline int hard_smp_processor_id(void) +{ + /* we don't want to mark this access volatile - bad code generation */ + return GET_APIC_ID(*(unsigned long *)(APIC_BASE+APIC_ID)); +} +#endif /* APIC_DEFINITION */ + +#else /* CONFIG_X86_LOCAL_APIC */ + +#ifndef CONFIG_SMP +#define hard_smp_processor_id() 0 +#endif + +#endif /* CONFIG_X86_LOCAL_APIC */ + extern u8 apicid_2_node[]; #ifdef CONFIG_X86_LOCAL_APIC diff --git a/include/asm-i386/sync_bitops.h b/include/asm-i386/sync_bitops.h index 7d72351bea75..cbce08a2d135 100644 --- a/include/asm-i386/sync_bitops.h +++ b/include/asm-i386/sync_bitops.h @@ -24,7 +24,7 @@ * if you do not require the atomic guarantees. * * Note: there are no guarantees that this function will not be reordered - * on non x86 architectures, so if you are writting portable code, + * on non-x86 architectures, so if you are writing portable code, * make sure not to rely on its reordering guarantees. * * Note that @nr may be almost arbitrarily large; this function is not diff --git a/include/asm-i386/thread_info.h b/include/asm-i386/thread_info.h index bf01d4b342bd..4cb0f91ae64f 100644 --- a/include/asm-i386/thread_info.h +++ b/include/asm-i386/thread_info.h @@ -172,7 +172,7 @@ static inline struct thread_info *current_thread_info(void) #define TS_USEDFPU 0x0001 /* FPU was used by this task this quantum (SMP) */ #define TS_POLLING 0x0002 /* True if in idle loop and not sleeping */ -#define tsk_is_polling(t) ((t)->thread_info->status & TS_POLLING) +#define tsk_is_polling(t) (task_thread_info(t)->status & TS_POLLING) #endif /* __KERNEL__ */ diff --git a/include/asm-ia64/smp.h b/include/asm-ia64/smp.h index 60fd4ae014f6..c60024989ebd 100644 --- a/include/asm-ia64/smp.h +++ b/include/asm-ia64/smp.h @@ -38,6 +38,8 @@ ia64_get_lid (void) return lid.f.id << 8 | lid.f.eid; } +#define hard_smp_processor_id() ia64_get_lid() + #ifdef CONFIG_SMP #define XTP_OFFSET 0x1e0008 @@ -110,8 +112,6 @@ max_xtp (void) writeb(0x0f, ipi_base_addr + XTP_OFFSET); /* Set XTP to max */ } -#define hard_smp_processor_id() ia64_get_lid() - /* Upping and downing of CPUs */ extern int __cpu_disable (void); extern void __cpu_die (unsigned int cpu); @@ -128,7 +128,7 @@ extern void unlock_ipi_calllock(void); extern void identify_siblings (struct cpuinfo_ia64 *); extern int is_multithreading_enabled(void); -#else +#else /* CONFIG_SMP */ #define cpu_logical_id(i) 0 #define cpu_physical_id(i) ia64_get_lid() diff --git a/include/asm-ia64/thread_info.h b/include/asm-ia64/thread_info.h index 91698599f918..d28147506585 100644 --- a/include/asm-ia64/thread_info.h +++ b/include/asm-ia64/thread_info.h @@ -110,6 +110,6 @@ struct thread_info { #define TS_POLLING 1 /* true if in idle loop and not sleeping */ -#define tsk_is_polling(t) ((t)->thread_info->status & TS_POLLING) +#define tsk_is_polling(t) (task_thread_info(t)->status & TS_POLLING) #endif /* _ASM_IA64_THREAD_INFO_H */ diff --git a/include/asm-m32r/smp.h b/include/asm-m32r/smp.h index abd937ac5239..078e1a51a042 100644 --- a/include/asm-m32r/smp.h +++ b/include/asm-m32r/smp.h @@ -108,6 +108,10 @@ extern unsigned long send_IPI_mask_phys(cpumask_t, int, int); #define IPI_SHIFT (0) #define NR_IPIS (8) -#endif /* CONFIG_SMP */ +#else /* CONFIG_SMP */ + +#define hard_smp_processor_id() 0 + +#endif /* CONFIG_SMP */ #endif /* _ASM_M32R_SMP_H */ diff --git a/include/asm-m32r/system.h b/include/asm-m32r/system.h index 06cdece35865..f62f5c9abba6 100644 --- a/include/asm-m32r/system.h +++ b/include/asm-m32r/system.h @@ -136,7 +136,7 @@ extern void __xchg_called_with_bad_pointer(void); "add3 "reg0", "addr", #0x2000; \n\t" \ "ld "reg0", @"reg0"; \n\t" \ "unlock "reg0", @"reg1"; \n\t" - /* FIXME: This workaround code cannot handle kenrel modules + /* FIXME: This workaround code cannot handle kernel modules * correctly under SMP environment. */ #else /* CONFIG_CHIP_M32700_TS1 */ diff --git a/include/asm-m68k/atarihw.h b/include/asm-m68k/atarihw.h index f28acd0fd689..6211363a345f 100644 --- a/include/asm-m68k/atarihw.h +++ b/include/asm-m68k/atarihw.h @@ -2,7 +2,7 @@ ** linux/atarihw.h -- This header defines some macros and pointers for ** the various Atari custom hardware registers. ** -** Copyright 1994 by Bj”rn Brauel +** Copyright 1994 by Bj”rn Brauel ** ** 5/1/94 Roman Hodek: ** Added definitions for TT specific chips. diff --git a/include/asm-m68k/atariints.h b/include/asm-m68k/atariints.h index 0ed454fc24bb..ce6c445805bd 100644 --- a/include/asm-m68k/atariints.h +++ b/include/asm-m68k/atariints.h @@ -1,7 +1,7 @@ /* ** atariints.h -- Atari Linux interrupt handling structs and prototypes ** -** Copyright 1994 by Bj”rn Brauel +** Copyright 1994 by Bj”rn Brauel ** ** 5/2/94 Roman Hodek: ** TT interrupt definitions added. diff --git a/include/asm-m68k/thread_info.h b/include/asm-m68k/thread_info.h index c4d622a57dfb..d635a3752488 100644 --- a/include/asm-m68k/thread_info.h +++ b/include/asm-m68k/thread_info.h @@ -37,17 +37,17 @@ struct thread_info { #define init_stack (init_thread_union.stack) #define task_thread_info(tsk) (&(tsk)->thread.info) -#define task_stack_page(tsk) ((void *)(tsk)->thread_info) +#define task_stack_page(tsk) ((tsk)->stack) #define current_thread_info() task_thread_info(current) #define __HAVE_THREAD_FUNCTIONS #define setup_thread_stack(p, org) ({ \ - *(struct task_struct **)(p)->thread_info = (p); \ + *(struct task_struct **)(p)->stack = (p); \ task_thread_info(p)->task = (p); \ }) -#define end_of_stack(p) ((unsigned long *)(p)->thread_info + 1) +#define end_of_stack(p) ((unsigned long *)(p)->stack + 1) /* entry.S relies on these definitions! * bits 0-7 are tested at every exception exit diff --git a/include/asm-mips/bootinfo.h b/include/asm-mips/bootinfo.h index c7c945baf1ee..dbf834f4dac4 100644 --- a/include/asm-mips/bootinfo.h +++ b/include/asm-mips/bootinfo.h @@ -254,7 +254,7 @@ extern void free_init_pages(const char *what, extern char arcs_cmdline[CL_SIZE]; /* - * Registers a0, a1, a3 and a4 as passed to the kenrel entry by firmware + * Registers a0, a1, a3 and a4 as passed to the kernel entry by firmware */ extern unsigned long fw_arg0, fw_arg1, fw_arg2, fw_arg3; diff --git a/include/asm-mips/system.h b/include/asm-mips/system.h index 30f23a2b46ca..3713d256d369 100644 --- a/include/asm-mips/system.h +++ b/include/asm-mips/system.h @@ -55,7 +55,7 @@ do { \ if (cpu_has_dsp) \ __save_dsp(prev); \ next->thread.emulated_fp = 0; \ - (last) = resume(prev, next, next->thread_info); \ + (last) = resume(prev, next, task_thread_info(next)); \ if (cpu_has_dsp) \ __restore_dsp(current); \ } while(0) diff --git a/include/asm-parisc/compat.h b/include/asm-parisc/compat.h index fe8579023531..11f4222597a0 100644 --- a/include/asm-parisc/compat.h +++ b/include/asm-parisc/compat.h @@ -152,7 +152,7 @@ static __inline__ void __user *compat_alloc_user_space(long len) static inline int __is_compat_task(struct task_struct *t) { - return test_ti_thread_flag(t->thread_info, TIF_32BIT); + return test_ti_thread_flag(task_thread_info(t), TIF_32BIT); } static inline int is_compat_task(void) diff --git a/include/asm-powerpc/ppc-pci.h b/include/asm-powerpc/ppc-pci.h index d74b2965bb82..6dcd7a811fe1 100644 --- a/include/asm-powerpc/ppc-pci.h +++ b/include/asm-powerpc/ppc-pci.h @@ -64,7 +64,7 @@ struct pci_dev *pci_get_device_by_addr(unsigned long addr); * eeh_slot_error_detail -- record and EEH error condition to the log * @severity: 1 if temporary, 2 if permanent failure. * - * Obtains the the EEH error details from the RTAS subsystem, + * Obtains the EEH error details from the RTAS subsystem, * and then logs these details with the RTAS error log system. */ void eeh_slot_error_detail (struct pci_dn *pdn, int severity); diff --git a/include/asm-powerpc/smp.h b/include/asm-powerpc/smp.h index 01717f266dc9..d037f50580e2 100644 --- a/include/asm-powerpc/smp.h +++ b/include/asm-powerpc/smp.h @@ -83,6 +83,7 @@ extern void __cpu_die(unsigned int cpu); #else /* for UP */ +#define hard_smp_processor_id() 0 #define smp_setup_cpu_maps() #endif /* CONFIG_SMP */ diff --git a/include/asm-ppc/hydra.h b/include/asm-ppc/hydra.h index 833a8aff2a80..1ad4eed07fbe 100644 --- a/include/asm-ppc/hydra.h +++ b/include/asm-ppc/hydra.h @@ -8,7 +8,7 @@ * Macintosh Technology in the Common Hardware Reference Platform * Apple Computer, Inc. * - * © Copyright 1995 Apple Computer, Inc. All rights reserved. + * © Copyright 1995 Apple Computer, Inc. All rights reserved. * * It's available online from http://chrp.apple.com/MacTech.pdf. * You can obtain paper copies of this book from computer bookstores or by diff --git a/include/asm-s390/smp.h b/include/asm-s390/smp.h index 0a28e6d6ef40..76e424f718c6 100644 --- a/include/asm-s390/smp.h +++ b/include/asm-s390/smp.h @@ -110,6 +110,7 @@ static inline void smp_send_stop(void) __load_psw_mask(psw_kernel_bits & ~PSW_MASK_MCHECK); } +#define hard_smp_processor_id() 0 #define smp_cpu_not_running(cpu) 1 #define smp_setup_cpu_possible_map() do { } while (0) #endif diff --git a/include/asm-sh/cpu-sh3/dma.h b/include/asm-sh/cpu-sh3/dma.h index 954801b46022..3a66dc458023 100644 --- a/include/asm-sh/cpu-sh3/dma.h +++ b/include/asm-sh/cpu-sh3/dma.h @@ -26,7 +26,7 @@ enum { XMIT_SZ_128BIT, }; -static unsigned int ts_shift[] __attribute__ ((used)) = { +static unsigned int ts_shift[] __maybe_unused = { [XMIT_SZ_8BIT] = 0, [XMIT_SZ_16BIT] = 1, [XMIT_SZ_32BIT] = 2, diff --git a/include/asm-sh/cpu-sh4/dma-sh7780.h b/include/asm-sh/cpu-sh4/dma-sh7780.h index 6c90d28331b2..71b426a6e482 100644 --- a/include/asm-sh/cpu-sh4/dma-sh7780.h +++ b/include/asm-sh/cpu-sh4/dma-sh7780.h @@ -28,7 +28,7 @@ enum { /* * The DMA count is defined as the number of bytes to transfer. */ -static unsigned int __attribute__ ((used)) ts_shift[] = { +static unsigned int ts_shift[] __maybe_unused = { [XMIT_SZ_8BIT] = 0, [XMIT_SZ_16BIT] = 1, [XMIT_SZ_32BIT] = 2, diff --git a/include/asm-sh/cpu-sh4/dma.h b/include/asm-sh/cpu-sh4/dma.h index c135e9cebd9c..36e26a964765 100644 --- a/include/asm-sh/cpu-sh4/dma.h +++ b/include/asm-sh/cpu-sh4/dma.h @@ -53,7 +53,7 @@ enum { /* * The DMA count is defined as the number of bytes to transfer. */ -static unsigned int ts_shift[] __attribute__ ((used)) = { +static unsigned int ts_shift[] __maybe_unused = { [XMIT_SZ_64BIT] = 3, [XMIT_SZ_8BIT] = 0, [XMIT_SZ_16BIT] = 1, diff --git a/include/asm-sh/edosk7705.h b/include/asm-sh/edosk7705.h index a1089a65bc36..5bdc9d9be3de 100644 --- a/include/asm-sh/edosk7705.h +++ b/include/asm-sh/edosk7705.h @@ -1,5 +1,5 @@ /* - * include/asm-sh/edosk7705/io.h + * include/asm-sh/edosk7705.h * * Modified version of io_se.h for the EDOSK7705 specific functions. * diff --git a/include/asm-sh/snapgear.h b/include/asm-sh/snapgear.h index 6b5e4ddc073a..2d712e72c9e5 100644 --- a/include/asm-sh/snapgear.h +++ b/include/asm-sh/snapgear.h @@ -1,5 +1,5 @@ /* - * include/asm-sh/snapgear/io.h + * include/asm-sh/snapgear.h * * Modified version of io_se.h for the snapgear-specific functions. * diff --git a/include/asm-sparc/smp.h b/include/asm-sparc/smp.h index b9da9a600e35..b3f492208fd2 100644 --- a/include/asm-sparc/smp.h +++ b/include/asm-sparc/smp.h @@ -165,6 +165,7 @@ void smp_setup_cpu_possible_map(void); #else /* SMP */ +#define hard_smp_processor_id() 0 #define smp_setup_cpu_possible_map() do { } while (0) #endif /* !(SMP) */ diff --git a/include/asm-sparc64/smp.h b/include/asm-sparc64/smp.h index cca54804b722..869d16fb907b 100644 --- a/include/asm-sparc64/smp.h +++ b/include/asm-sparc64/smp.h @@ -48,6 +48,7 @@ extern unsigned char boot_cpu_id; #else +#define hard_smp_processor_id() 0 #define smp_setup_cpu_possible_map() do { } while (0) #define boot_cpu_id (0) diff --git a/include/asm-um/required-features.h b/include/asm-um/required-features.h new file mode 100644 index 000000000000..dfb967b2d2f3 --- /dev/null +++ b/include/asm-um/required-features.h @@ -0,0 +1,9 @@ +#ifndef __UM_REQUIRED_FEATURES_H +#define __UM_REQUIRED_FEATURES_H + +/* + * Nothing to see, just need something for the i386 and x86_64 asm + * headers to include. + */ + +#endif diff --git a/include/asm-um/smp.h b/include/asm-um/smp.h index ca552261ed1f..84f8cf29324e 100644 --- a/include/asm-um/smp.h +++ b/include/asm-um/smp.h @@ -24,6 +24,10 @@ extern inline void smp_cpus_done(unsigned int maxcpus) extern struct task_struct *idle_threads[NR_CPUS]; +#else + +#define hard_smp_processor_id() 0 + #endif #endif diff --git a/include/asm-x86_64/smp.h b/include/asm-x86_64/smp.h index d5704421456b..3f303d2365ed 100644 --- a/include/asm-x86_64/smp.h +++ b/include/asm-x86_64/smp.h @@ -57,12 +57,6 @@ static inline int num_booting_cpus(void) #define raw_smp_processor_id() read_pda(cpunumber) -static inline int hard_smp_processor_id(void) -{ - /* we don't want to mark this access volatile - bad code generation */ - return GET_APIC_ID(*(unsigned int *)(APIC_BASE+APIC_ID)); -} - extern int __cpu_disable(void); extern void __cpu_die(unsigned int cpu); extern void prefill_possible_map(void); @@ -71,7 +65,13 @@ extern unsigned __cpuinitdata disabled_cpus; #define NO_PROC_ID 0xFF /* No processor magic marker */ -#endif +#endif /* CONFIG_SMP */ + +static inline int hard_smp_processor_id(void) +{ + /* we don't want to mark this access volatile - bad code generation */ + return GET_APIC_ID(*(unsigned int *)(APIC_BASE+APIC_ID)); +} /* * Some lowlevel functions might want to know about diff --git a/include/asm-x86_64/system.h b/include/asm-x86_64/system.h index b7b8021e8c43..ead9f9a56234 100644 --- a/include/asm-x86_64/system.h +++ b/include/asm-x86_64/system.h @@ -39,7 +39,7 @@ [threadrsp] "i" (offsetof(struct task_struct, thread.rsp)), \ [ti_flags] "i" (offsetof(struct thread_info, flags)),\ [tif_fork] "i" (TIF_FORK), \ - [thread_info] "i" (offsetof(struct task_struct, thread_info)), \ + [thread_info] "i" (offsetof(struct task_struct, stack)), \ [pda_pcurrent] "i" (offsetof(struct x8664_pda, pcurrent)) \ : "memory", "cc" __EXTRA_CLOBBER) diff --git a/include/asm-x86_64/thread_info.h b/include/asm-x86_64/thread_info.h index 74a6c74397f7..10bb5a8ed688 100644 --- a/include/asm-x86_64/thread_info.h +++ b/include/asm-x86_64/thread_info.h @@ -162,7 +162,7 @@ static inline struct thread_info *stack_thread_info(void) #define TS_COMPAT 0x0002 /* 32bit syscall active */ #define TS_POLLING 0x0004 /* true if in idle loop and not sleeping */ -#define tsk_is_polling(t) ((t)->thread_info->status & TS_POLLING) +#define tsk_is_polling(t) (task_thread_info(t)->status & TS_POLLING) #endif /* __KERNEL__ */ diff --git a/include/asm-xtensa/platform-iss/simcall.h b/include/asm-xtensa/platform-iss/simcall.h index 6acb572759a6..b7952c06a2b7 100644 --- a/include/asm-xtensa/platform-iss/simcall.h +++ b/include/asm-xtensa/platform-iss/simcall.h @@ -1,5 +1,5 @@ /* - * include/asm-xtensa/platform-iss/hardware.h + * include/asm-xtensa/platform-iss/simcall.h * * This file is subject to the terms and conditions of the GNU General Public * License. See the file "COPYING" in the main directory of this archive diff --git a/include/linux/aio.h b/include/linux/aio.h index a30ef13c9e62..43dc2ebfaa0e 100644 --- a/include/linux/aio.h +++ b/include/linux/aio.h @@ -226,7 +226,8 @@ int FASTCALL(io_submit_one(struct kioctx *ctx, struct iocb __user *user_iocb, __put_ioctx(kioctx); \ } while (0) -#define in_aio() !is_sync_wait(current->io_wait) +#define in_aio() (unlikely(!is_sync_wait(current->io_wait))) + /* may be used for debugging */ #define warn_if_async() \ do { \ diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h index a686eabe22d6..db5b00a792f5 100644 --- a/include/linux/blkdev.h +++ b/include/linux/blkdev.h @@ -854,7 +854,7 @@ static inline void put_dev_sector(Sector p) struct work_struct; int kblockd_schedule_work(struct work_struct *work); -void kblockd_flush(void); +void kblockd_flush_work(struct work_struct *work); #define MODULE_ALIAS_BLOCKDEV(major,minor) \ MODULE_ALIAS("block-major-" __stringify(major) "-" __stringify(minor)) diff --git a/include/linux/clocksource.h b/include/linux/clocksource.h index 2665ca04cf8f..bf297b03a4e4 100644 --- a/include/linux/clocksource.h +++ b/include/linux/clocksource.h @@ -49,6 +49,7 @@ struct clocksource; * @shift: cycle to nanosecond divisor (power of two) * @flags: flags describing special properties * @vread: vsyscall based read + * @resume: resume function for the clocksource, if necessary * @cycle_interval: Used internally by timekeeping core, please ignore. * @xtime_interval: Used internally by timekeeping core, please ignore. */ @@ -65,6 +66,7 @@ struct clocksource { u32 shift; unsigned long flags; cycle_t (*vread)(void); + void (*resume)(void); /* timekeeping specific data, ignore */ cycle_t cycle_interval; @@ -209,6 +211,7 @@ static inline void clocksource_calculate_interval(struct clocksource *c, extern int clocksource_register(struct clocksource*); extern struct clocksource* clocksource_get_next(void); extern void clocksource_change_rating(struct clocksource *cs, int rating); +extern void clocksource_resume(void); #ifdef CONFIG_GENERIC_TIME_VSYSCALL extern void update_vsyscall(struct timespec *ts, struct clocksource *c); diff --git a/include/linux/compat.h b/include/linux/compat.h index ccd863dd77fa..70a157a130bb 100644 --- a/include/linux/compat.h +++ b/include/linux/compat.h @@ -253,5 +253,8 @@ asmlinkage long compat_sys_epoll_pwait(int epfd, const compat_sigset_t __user *sigmask, compat_size_t sigsetsize); +asmlinkage long compat_sys_utimensat(unsigned int dfd, char __user *filename, + struct compat_timespec __user *t, int flags); + #endif /* CONFIG_COMPAT */ #endif /* _LINUX_COMPAT_H */ diff --git a/include/linux/compiler-gcc.h b/include/linux/compiler-gcc.h index a9f794716a81..03ec2311fb29 100644 --- a/include/linux/compiler-gcc.h +++ b/include/linux/compiler-gcc.h @@ -40,3 +40,4 @@ #define noinline __attribute__((noinline)) #define __attribute_pure__ __attribute__((pure)) #define __attribute_const__ __attribute__((__const__)) +#define __maybe_unused __attribute__((unused)) diff --git a/include/linux/compiler-gcc3.h b/include/linux/compiler-gcc3.h index ecd621fd27d2..a9e2863c2dbf 100644 --- a/include/linux/compiler-gcc3.h +++ b/include/linux/compiler-gcc3.h @@ -4,9 +4,11 @@ #include <linux/compiler-gcc.h> #if __GNUC_MINOR__ >= 3 -# define __attribute_used__ __attribute__((__used__)) +# define __used __attribute__((__used__)) +# define __attribute_used__ __used /* deprecated */ #else -# define __attribute_used__ __attribute__((__unused__)) +# define __used __attribute__((__unused__)) +# define __attribute_used__ __used /* deprecated */ #endif #if __GNUC_MINOR__ >= 4 diff --git a/include/linux/compiler-gcc4.h b/include/linux/compiler-gcc4.h index fd0cc7c4a636..a03e9398a6c2 100644 --- a/include/linux/compiler-gcc4.h +++ b/include/linux/compiler-gcc4.h @@ -12,7 +12,8 @@ # define __inline __inline __attribute__((always_inline)) #endif -#define __attribute_used__ __attribute__((__used__)) +#define __used __attribute__((__used__)) +#define __attribute_used__ __used /* deprecated */ #define __must_check __attribute__((warn_unused_result)) #define __compiler_offsetof(a,b) __builtin_offsetof(a,b) #define __always_inline inline __attribute__((always_inline)) diff --git a/include/linux/compiler.h b/include/linux/compiler.h index 3b6949b41745..498c35920762 100644 --- a/include/linux/compiler.h +++ b/include/linux/compiler.h @@ -108,15 +108,30 @@ extern void __chk_io_ptr(const void __iomem *); * Allow us to avoid 'defined but not used' warnings on functions and data, * as well as force them to be emitted to the assembly file. * - * As of gcc 3.3, static functions that are not marked with attribute((used)) - * may be elided from the assembly file. As of gcc 3.3, static data not so + * As of gcc 3.4, static functions that are not marked with attribute((used)) + * may be elided from the assembly file. As of gcc 3.4, static data not so * marked will not be elided, but this may change in a future gcc version. * + * NOTE: Because distributions shipped with a backported unit-at-a-time + * compiler in gcc 3.3, we must define __used to be __attribute__((used)) + * for gcc >=3.3 instead of 3.4. + * * In prior versions of gcc, such functions and data would be emitted, but * would be warned about except with attribute((unused)). + * + * Mark functions that are referenced only in inline assembly as __used so + * the code is emitted even though it appears to be unreferenced. */ #ifndef __attribute_used__ -# define __attribute_used__ /* unimplemented */ +# define __attribute_used__ /* deprecated */ +#endif + +#ifndef __used +# define __used /* unimplemented */ +#endif + +#ifndef __maybe_unused +# define __maybe_unused /* unimplemented */ #endif /* diff --git a/include/linux/ext3_fs_i.h b/include/linux/ext3_fs_i.h index 4395e5206746..7894dd0f3b77 100644 --- a/include/linux/ext3_fs_i.h +++ b/include/linux/ext3_fs_i.h @@ -54,7 +54,7 @@ struct ext3_block_alloc_info { /* * Was i_next_alloc_goal in ext3_inode_info * is the *physical* companion to i_next_alloc_block. - * it the the physical block number of the block which was most-recentl + * it the physical block number of the block which was most-recentl * allocated to this file. This give us the goal (target) for the next * allocation when we detect linearly ascending requests. */ diff --git a/include/linux/ext4_fs_i.h b/include/linux/ext4_fs_i.h index bb42379cb7fd..d5b177e5b395 100644 --- a/include/linux/ext4_fs_i.h +++ b/include/linux/ext4_fs_i.h @@ -52,7 +52,7 @@ struct ext4_block_alloc_info { /* * Was i_next_alloc_goal in ext4_inode_info * is the *physical* companion to i_next_alloc_block. - * it the the physical block number of the block which was most-recentl + * it the physical block number of the block which was most-recentl * allocated to this file. This give us the goal (target) for the next * allocation when we detect linearly ascending requests. */ diff --git a/include/linux/fb.h b/include/linux/fb.h index dff7a728948c..c654d0e9ce33 100644 --- a/include/linux/fb.h +++ b/include/linux/fb.h @@ -868,7 +868,7 @@ struct fb_info { #define fb_writeq sbus_writeq #define fb_memset sbus_memset_io -#elif defined(__i386__) || defined(__alpha__) || defined(__x86_64__) || defined(__hppa__) || (defined(__sh__) && !defined(__SH5__)) || defined(__powerpc__) +#elif defined(__i386__) || defined(__alpha__) || defined(__x86_64__) || defined(__hppa__) || (defined(__sh__) && !defined(__SH5__)) || defined(__powerpc__) || defined(__avr32__) #define fb_readb __raw_readb #define fb_readw __raw_readw diff --git a/include/linux/futex.h b/include/linux/futex.h index 820125c628c1..899fc7f20edd 100644 --- a/include/linux/futex.h +++ b/include/linux/futex.h @@ -3,6 +3,8 @@ #include <linux/sched.h> +union ktime; + /* Second argument to futex syscall */ @@ -15,6 +17,19 @@ #define FUTEX_LOCK_PI 6 #define FUTEX_UNLOCK_PI 7 #define FUTEX_TRYLOCK_PI 8 +#define FUTEX_CMP_REQUEUE_PI 9 + +#define FUTEX_PRIVATE_FLAG 128 +#define FUTEX_CMD_MASK ~FUTEX_PRIVATE_FLAG + +#define FUTEX_WAIT_PRIVATE (FUTEX_WAIT | FUTEX_PRIVATE_FLAG) +#define FUTEX_WAKE_PRIVATE (FUTEX_WAKE | FUTEX_PRIVATE_FLAG) +#define FUTEX_REQUEUE_PRIVATE (FUTEX_REQUEUE | FUTEX_PRIVATE_FLAG) +#define FUTEX_CMP_REQUEUE_PRIVATE (FUTEX_CMP_REQUEUE | FUTEX_PRIVATE_FLAG) +#define FUTEX_WAKE_OP_PRIVATE (FUTEX_WAKE_OP | FUTEX_PRIVATE_FLAG) +#define FUTEX_LOCK_PI_PRIVATE (FUTEX_LOCK_PI | FUTEX_PRIVATE_FLAG) +#define FUTEX_UNLOCK_PI_PRIVATE (FUTEX_UNLOCK_PI | FUTEX_PRIVATE_FLAG) +#define FUTEX_TRYLOCK_PI_PRIVATE (FUTEX_TRYLOCK_PI | FUTEX_PRIVATE_FLAG) /* * Support for robust futexes: the kernel cleans up held futexes at @@ -83,9 +98,14 @@ struct robust_list_head { #define FUTEX_OWNER_DIED 0x40000000 /* + * Some processes have been requeued on this PI-futex + */ +#define FUTEX_WAITER_REQUEUED 0x20000000 + +/* * The rest of the robust-futex field is for the TID: */ -#define FUTEX_TID_MASK 0x3fffffff +#define FUTEX_TID_MASK 0x0fffffff /* * This limit protects against a deliberately circular list. @@ -94,7 +114,7 @@ struct robust_list_head { #define ROBUST_LIST_LIMIT 2048 #ifdef __KERNEL__ -long do_futex(u32 __user *uaddr, int op, u32 val, unsigned long timeout, +long do_futex(u32 __user *uaddr, int op, u32 val, union ktime *timeout, u32 __user *uaddr2, u32 val2, u32 val3); extern int @@ -106,9 +126,20 @@ handle_futex_death(u32 __user *uaddr, struct task_struct *curr, int pi); * Don't rearrange members without looking at hash_futex(). * * offset is aligned to a multiple of sizeof(u32) (== 4) by definition. - * We set bit 0 to indicate if it's an inode-based key. - */ + * We use the two low order bits of offset to tell what is the kind of key : + * 00 : Private process futex (PTHREAD_PROCESS_PRIVATE) + * (no reference on an inode or mm) + * 01 : Shared futex (PTHREAD_PROCESS_SHARED) + * mapped on a file (reference on the underlying inode) + * 10 : Shared futex (PTHREAD_PROCESS_SHARED) + * (but private mapping on an mm, and reference taken on it) +*/ + +#define FUT_OFF_INODE 1 /* We set bit 0 if key has a reference on inode */ +#define FUT_OFF_MMSHARED 2 /* We set bit 1 if key has a reference on mm */ + union futex_key { + u32 __user *uaddr; struct { unsigned long pgoff; struct inode *inode; @@ -125,7 +156,8 @@ union futex_key { int offset; } both; }; -int get_futex_key(u32 __user *uaddr, union futex_key *key); +int get_futex_key(u32 __user *uaddr, struct rw_semaphore *shared, + union futex_key *key); void get_futex_key_refs(union futex_key *key); void drop_futex_key_refs(union futex_key *key); diff --git a/include/linux/generic_acl.h b/include/linux/generic_acl.h index 80764f40be75..886f5faa08cb 100644 --- a/include/linux/generic_acl.h +++ b/include/linux/generic_acl.h @@ -1,5 +1,5 @@ /* - * fs/generic_acl.c + * include/linux/generic_acl.h * * (C) 2005 Andreas Gruenbacher <agruen@suse.de> * diff --git a/include/linux/genhd.h b/include/linux/genhd.h index 2c65da7cabb2..f589559cf070 100644 --- a/include/linux/genhd.h +++ b/include/linux/genhd.h @@ -413,6 +413,7 @@ char *disk_name (struct gendisk *hd, int part, char *buf); extern int rescan_partitions(struct gendisk *disk, struct block_device *bdev); extern void add_partition(struct gendisk *, int, sector_t, sector_t, int); extern void delete_partition(struct gendisk *, int); +extern void printk_all_partitions(void); extern struct gendisk *alloc_disk_node(int minors, int node_id); extern struct gendisk *alloc_disk(int minors); diff --git a/include/linux/gfp.h b/include/linux/gfp.h index 97a36c3d96e2..0d2ef0b082a6 100644 --- a/include/linux/gfp.h +++ b/include/linux/gfp.h @@ -176,10 +176,6 @@ extern void FASTCALL(free_cold_page(struct page *page)); #define free_page(addr) free_pages((addr),0) void page_alloc_init(void); -#ifdef CONFIG_NUMA -void drain_node_pages(int node); -#else -static inline void drain_node_pages(int node) { }; -#endif +void drain_zone_pages(struct zone *zone, struct per_cpu_pages *pcp); #endif /* __LINUX_GFP_H */ diff --git a/include/linux/highmem.h b/include/linux/highmem.h index a515eb0afdfb..98e2cce996a4 100644 --- a/include/linux/highmem.h +++ b/include/linux/highmem.h @@ -94,17 +94,26 @@ static inline void clear_highpage(struct page *page) /* * Same but also flushes aliased cache contents to RAM. + * + * This must be a macro because KM_USER0 and friends aren't defined if + * !CONFIG_HIGHMEM */ -static inline void memclear_highpage_flush(struct page *page, unsigned int offset, unsigned int size) +#define zero_user_page(page, offset, size, km_type) \ + do { \ + void *kaddr; \ + \ + BUG_ON((offset) + (size) > PAGE_SIZE); \ + \ + kaddr = kmap_atomic(page, km_type); \ + memset((char *)kaddr + (offset), 0, (size)); \ + flush_dcache_page(page); \ + kunmap_atomic(kaddr, (km_type)); \ + } while (0) + +static inline void __deprecated memclear_highpage_flush(struct page *page, + unsigned int offset, unsigned int size) { - void *kaddr; - - BUG_ON(offset + size > PAGE_SIZE); - - kaddr = kmap_atomic(page, KM_USER0); - memset((char *)kaddr + offset, 0, size); - flush_dcache_page(page); - kunmap_atomic(kaddr, KM_USER0); + zero_user_page(page, offset, size, KM_USER0); } #ifndef __HAVE_ARCH_COPY_USER_HIGHPAGE diff --git a/include/linux/i2c-algo-bit.h b/include/linux/i2c-algo-bit.h index 9ee0f800592f..111334f5b922 100644 --- a/include/linux/i2c-algo-bit.h +++ b/include/linux/i2c-algo-bit.h @@ -18,7 +18,7 @@ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ /* ------------------------------------------------------------------------- */ -/* With some changes from Kyösti Mälkki <kmalkki@cc.hut.fi> and even +/* With some changes from Kyösti Mälkki <kmalkki@cc.hut.fi> and even Frodo Looijaard <frodol@dds.nl> */ #ifndef _LINUX_I2C_ALGO_BIT_H diff --git a/include/linux/i2c-algo-pcf.h b/include/linux/i2c-algo-pcf.h index 994eb86f882c..77afbb60fd11 100644 --- a/include/linux/i2c-algo-pcf.h +++ b/include/linux/i2c-algo-pcf.h @@ -19,7 +19,7 @@ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ /* ------------------------------------------------------------------------- */ -/* With some changes from Kyösti Mälkki <kmalkki@cc.hut.fi> and even +/* With some changes from Kyösti Mälkki <kmalkki@cc.hut.fi> and even Frodo Looijaard <frodol@dds.nl> */ #ifndef _LINUX_I2C_ALGO_PCF_H diff --git a/include/linux/init_task.h b/include/linux/init_task.h index 795102309bf1..45170b2fa253 100644 --- a/include/linux/init_task.h +++ b/include/linux/init_task.h @@ -95,7 +95,7 @@ extern struct group_info init_groups; #define INIT_TASK(tsk) \ { \ .state = 0, \ - .thread_info = &init_thread_info, \ + .stack = &init_thread_info, \ .usage = ATOMIC_INIT(2), \ .flags = 0, \ .lock_depth = -1, \ diff --git a/include/linux/irda.h b/include/linux/irda.h index 09d8f105a5a8..945ba3110874 100644 --- a/include/linux/irda.h +++ b/include/linux/irda.h @@ -16,7 +16,7 @@ * published by the Free Software Foundation; either version 2 of * the License, or (at your option) any later version. * - * Neither Dag Brattli nor University of Tromsø admit liability nor + * Neither Dag Brattli nor University of Tromsø admit liability nor * provide warranty for any of this software. This material is * provided "AS-IS" and at no charge. * diff --git a/include/linux/kthread.h b/include/linux/kthread.h index 1c65e7a9f186..00dd957e245b 100644 --- a/include/linux/kthread.h +++ b/include/linux/kthread.h @@ -30,4 +30,7 @@ void kthread_bind(struct task_struct *k, unsigned int cpu); int kthread_stop(struct task_struct *k); int kthread_should_stop(void); +int kthreadd(void *unused); +extern struct task_struct *kthreadd_task; + #endif /* _LINUX_KTHREAD_H */ diff --git a/include/linux/ktime.h b/include/linux/ktime.h index 81bb9c7a4eb3..c762954bda14 100644 --- a/include/linux/ktime.h +++ b/include/linux/ktime.h @@ -43,7 +43,7 @@ * plain scalar nanosecond based representation can be selected by the * config switch CONFIG_KTIME_SCALAR. */ -typedef union { +union ktime { s64 tv64; #if BITS_PER_LONG != 64 && !defined(CONFIG_KTIME_SCALAR) struct { @@ -54,7 +54,9 @@ typedef union { # endif } tv; #endif -} ktime_t; +}; + +typedef union ktime ktime_t; /* Kill this */ #define KTIME_MAX ((s64)~((u64)1 << 63)) #if (BITS_PER_LONG == 64) diff --git a/include/linux/mca.h b/include/linux/mca.h index 5cff2923092b..37972704617f 100644 --- a/include/linux/mca.h +++ b/include/linux/mca.h @@ -94,6 +94,7 @@ struct mca_bus { struct mca_driver { const short *id_table; void *driver_data; + int integrated_id; struct device_driver driver; }; #define to_mca_driver(mdriver) container_of(mdriver, struct mca_driver, driver) @@ -125,6 +126,7 @@ extern enum MCA_AdapterStatus mca_device_status(struct mca_device *mca_dev); extern struct bus_type mca_bus_type; extern int mca_register_driver(struct mca_driver *drv); +extern int mca_register_driver_integrated(struct mca_driver *, int); extern void mca_unregister_driver(struct mca_driver *drv); /* WARNING: only called by the boot time device setup */ diff --git a/include/linux/meye.h b/include/linux/meye.h index 11ec45e9a132..39fd9c8ddd4b 100644 --- a/include/linux/meye.h +++ b/include/linux/meye.h @@ -3,7 +3,7 @@ * * Copyright (C) 2001-2003 Stelian Pop <stelian@popies.net> * - * Copyright (C) 2001-2002 Alcôve <www.alcove.com> + * Copyright (C) 2001-2002 Alcôve <www.alcove.com> * * Copyright (C) 2000 Andrew Tridgell <tridge@valinux.com> * diff --git a/include/linux/mmzone.h b/include/linux/mmzone.h index 2f1544e83042..d09b1345a3a1 100644 --- a/include/linux/mmzone.h +++ b/include/linux/mmzone.h @@ -83,6 +83,9 @@ struct per_cpu_pages { struct per_cpu_pageset { struct per_cpu_pages pcp[2]; /* 0: hot. 1: cold */ +#ifdef CONFIG_NUMA + s8 expire; +#endif #ifdef CONFIG_SMP s8 stat_threshold; s8 vm_stat_diff[NR_VM_ZONE_STAT_ITEMS]; diff --git a/include/linux/module.h b/include/linux/module.h index 6d3dc9c4ff96..792d483c9af7 100644 --- a/include/linux/module.h +++ b/include/linux/module.h @@ -356,6 +356,9 @@ struct module keeping pointers to this stuff */ char *args; }; +#ifndef MODULE_ARCH_INIT +#define MODULE_ARCH_INIT {} +#endif /* FIXME: It'd be nice to isolate modules during init, too, so they aren't used before they (may) fail. But presently too much code diff --git a/include/linux/mount.h b/include/linux/mount.h index dab69afee2fa..6d3047d8c91c 100644 --- a/include/linux/mount.h +++ b/include/linux/mount.h @@ -33,7 +33,7 @@ struct mnt_namespace; #define MNT_SHARED 0x1000 /* if the vfsmount is a shared mount */ #define MNT_UNBINDABLE 0x2000 /* if the vfsmount is a unbindable mount */ -#define MNT_PNODE_MASK 0x3000 /* propogation flag mask */ +#define MNT_PNODE_MASK 0x3000 /* propagation flag mask */ struct vfsmount { struct list_head mnt_hash; diff --git a/include/linux/mutex.h b/include/linux/mutex.h index b81bc2adaeff..0d50ea3df689 100644 --- a/include/linux/mutex.h +++ b/include/linux/mutex.h @@ -121,11 +121,12 @@ static inline int fastcall mutex_is_locked(struct mutex *lock) * Also see Documentation/mutex-design.txt. */ extern void fastcall mutex_lock(struct mutex *lock); -extern int fastcall mutex_lock_interruptible(struct mutex *lock); +extern int __must_check fastcall mutex_lock_interruptible(struct mutex *lock); #ifdef CONFIG_DEBUG_LOCK_ALLOC extern void mutex_lock_nested(struct mutex *lock, unsigned int subclass); -extern int mutex_lock_interruptible_nested(struct mutex *lock, unsigned int subclass); +extern int __must_check mutex_lock_interruptible_nested(struct mutex *lock, + unsigned int subclass); #else # define mutex_lock_nested(lock, subclass) mutex_lock(lock) # define mutex_lock_interruptible_nested(lock, subclass) mutex_lock_interruptible(lock) diff --git a/include/linux/nfs4_acl.h b/include/linux/nfs4_acl.h index 409b6e02f337..c9c05a78e9bb 100644 --- a/include/linux/nfs4_acl.h +++ b/include/linux/nfs4_acl.h @@ -44,7 +44,6 @@ #define NFS4_ACL_MAX 170 struct nfs4_acl *nfs4_acl_new(int); -void nfs4_acl_add_ace(struct nfs4_acl *, u32, u32, u32, int, uid_t); int nfs4_acl_get_whotype(char *, u32); int nfs4_acl_write_who(int who, char *p); int nfs4_acl_permission(struct nfs4_acl *acl, uid_t owner, gid_t group, diff --git a/include/linux/notifier.h b/include/linux/notifier.h index 10a43ed0527e..9431101bf876 100644 --- a/include/linux/notifier.h +++ b/include/linux/notifier.h @@ -112,32 +112,40 @@ extern void srcu_init_notifier_head(struct srcu_notifier_head *nh); #ifdef __KERNEL__ -extern int atomic_notifier_chain_register(struct atomic_notifier_head *, - struct notifier_block *); -extern int blocking_notifier_chain_register(struct blocking_notifier_head *, - struct notifier_block *); -extern int raw_notifier_chain_register(struct raw_notifier_head *, - struct notifier_block *); -extern int srcu_notifier_chain_register(struct srcu_notifier_head *, - struct notifier_block *); - -extern int atomic_notifier_chain_unregister(struct atomic_notifier_head *, - struct notifier_block *); -extern int blocking_notifier_chain_unregister(struct blocking_notifier_head *, - struct notifier_block *); -extern int raw_notifier_chain_unregister(struct raw_notifier_head *, - struct notifier_block *); -extern int srcu_notifier_chain_unregister(struct srcu_notifier_head *, - struct notifier_block *); - -extern int atomic_notifier_call_chain(struct atomic_notifier_head *, +extern int atomic_notifier_chain_register(struct atomic_notifier_head *nh, + struct notifier_block *nb); +extern int blocking_notifier_chain_register(struct blocking_notifier_head *nh, + struct notifier_block *nb); +extern int raw_notifier_chain_register(struct raw_notifier_head *nh, + struct notifier_block *nb); +extern int srcu_notifier_chain_register(struct srcu_notifier_head *nh, + struct notifier_block *nb); + +extern int atomic_notifier_chain_unregister(struct atomic_notifier_head *nh, + struct notifier_block *nb); +extern int blocking_notifier_chain_unregister(struct blocking_notifier_head *nh, + struct notifier_block *nb); +extern int raw_notifier_chain_unregister(struct raw_notifier_head *nh, + struct notifier_block *nb); +extern int srcu_notifier_chain_unregister(struct srcu_notifier_head *nh, + struct notifier_block *nb); + +extern int atomic_notifier_call_chain(struct atomic_notifier_head *nh, unsigned long val, void *v); -extern int blocking_notifier_call_chain(struct blocking_notifier_head *, +extern int __atomic_notifier_call_chain(struct atomic_notifier_head *nh, + unsigned long val, void *v, int nr_to_call, int *nr_calls); +extern int blocking_notifier_call_chain(struct blocking_notifier_head *nh, unsigned long val, void *v); -extern int raw_notifier_call_chain(struct raw_notifier_head *, +extern int __blocking_notifier_call_chain(struct blocking_notifier_head *nh, + unsigned long val, void *v, int nr_to_call, int *nr_calls); +extern int raw_notifier_call_chain(struct raw_notifier_head *nh, unsigned long val, void *v); -extern int srcu_notifier_call_chain(struct srcu_notifier_head *, +extern int __raw_notifier_call_chain(struct raw_notifier_head *nh, + unsigned long val, void *v, int nr_to_call, int *nr_calls); +extern int srcu_notifier_call_chain(struct srcu_notifier_head *nh, unsigned long val, void *v); +extern int __srcu_notifier_call_chain(struct srcu_notifier_head *nh, + unsigned long val, void *v, int nr_to_call, int *nr_calls); #define NOTIFY_DONE 0x0000 /* Don't care */ #define NOTIFY_OK 0x0001 /* Suits me */ @@ -186,6 +194,20 @@ extern int srcu_notifier_call_chain(struct srcu_notifier_head *, #define CPU_DOWN_PREPARE 0x0005 /* CPU (unsigned)v going down */ #define CPU_DOWN_FAILED 0x0006 /* CPU (unsigned)v NOT going down */ #define CPU_DEAD 0x0007 /* CPU (unsigned)v dead */ +#define CPU_LOCK_ACQUIRE 0x0008 /* Acquire all hotcpu locks */ +#define CPU_LOCK_RELEASE 0x0009 /* Release all hotcpu locks */ + +/* Used for CPU hotplug events occuring while tasks are frozen due to a suspend + * operation in progress + */ +#define CPU_TASKS_FROZEN 0x0010 + +#define CPU_ONLINE_FROZEN (CPU_ONLINE | CPU_TASKS_FROZEN) +#define CPU_UP_PREPARE_FROZEN (CPU_UP_PREPARE | CPU_TASKS_FROZEN) +#define CPU_UP_CANCELED_FROZEN (CPU_UP_CANCELED | CPU_TASKS_FROZEN) +#define CPU_DOWN_PREPARE_FROZEN (CPU_DOWN_PREPARE | CPU_TASKS_FROZEN) +#define CPU_DOWN_FAILED_FROZEN (CPU_DOWN_FAILED | CPU_TASKS_FROZEN) +#define CPU_DEAD_FROZEN (CPU_DEAD | CPU_TASKS_FROZEN) #endif /* __KERNEL__ */ #endif /* _LINUX_NOTIFIER_H */ diff --git a/include/linux/pm.h b/include/linux/pm.h index 6e8fa3049e5d..87545e0f0b58 100644 --- a/include/linux/pm.h +++ b/include/linux/pm.h @@ -107,26 +107,11 @@ typedef int __bitwise suspend_state_t; #define PM_SUSPEND_ON ((__force suspend_state_t) 0) #define PM_SUSPEND_STANDBY ((__force suspend_state_t) 1) #define PM_SUSPEND_MEM ((__force suspend_state_t) 3) -#define PM_SUSPEND_DISK ((__force suspend_state_t) 4) -#define PM_SUSPEND_MAX ((__force suspend_state_t) 5) - -typedef int __bitwise suspend_disk_method_t; - -/* invalid must be 0 so struct pm_ops initialisers can leave it out */ -#define PM_DISK_INVALID ((__force suspend_disk_method_t) 0) -#define PM_DISK_PLATFORM ((__force suspend_disk_method_t) 1) -#define PM_DISK_SHUTDOWN ((__force suspend_disk_method_t) 2) -#define PM_DISK_REBOOT ((__force suspend_disk_method_t) 3) -#define PM_DISK_TEST ((__force suspend_disk_method_t) 4) -#define PM_DISK_TESTPROC ((__force suspend_disk_method_t) 5) -#define PM_DISK_MAX ((__force suspend_disk_method_t) 6) +#define PM_SUSPEND_MAX ((__force suspend_state_t) 4) /** * struct pm_ops - Callbacks for managing platform dependent suspend states. * @valid: Callback to determine whether the given state can be entered. - * If %CONFIG_SOFTWARE_SUSPEND is set then %PM_SUSPEND_DISK is - * always valid and never passed to this call. If not assigned, - * no suspend states are valid. * Valid states are advertised in /sys/power/state but can still * be rejected by prepare or enter if the conditions aren't right. * There is a %pm_valid_only_mem function available that can be assigned @@ -140,24 +125,12 @@ typedef int __bitwise suspend_disk_method_t; * * @finish: Called when the system has left the given state and all devices * are resumed. The return value is ignored. - * - * @pm_disk_mode: The generic code always allows one of the shutdown methods - * %PM_DISK_SHUTDOWN, %PM_DISK_REBOOT, %PM_DISK_TEST and - * %PM_DISK_TESTPROC. If this variable is set, the mode it is set - * to is allowed in addition to those modes and is also made default. - * When this mode is sent selected, the @prepare call will be called - * before suspending to disk (if present), the @enter call should be - * present and will be called after all state has been saved and the - * machine is ready to be powered off; the @finish callback is called - * after state has been restored. All these calls are called with - * %PM_SUSPEND_DISK as the state. */ struct pm_ops { int (*valid)(suspend_state_t state); int (*prepare)(suspend_state_t state); int (*enter)(suspend_state_t state); int (*finish)(suspend_state_t state); - suspend_disk_method_t pm_disk_mode; }; /** @@ -276,8 +249,6 @@ extern void device_power_up(void); extern void device_resume(void); #ifdef CONFIG_PM -extern suspend_disk_method_t pm_disk_mode; - extern int device_suspend(pm_message_t state); extern int device_prepare_suspend(pm_message_t state); diff --git a/include/linux/radix-tree.h b/include/linux/radix-tree.h index 0deb842541ac..f9e77d2ee320 100644 --- a/include/linux/radix-tree.h +++ b/include/linux/radix-tree.h @@ -87,10 +87,10 @@ do { \ * management of their lifetimes must be completely managed by API users. * * For API usage, in general, - * - any function _modifying_ the the tree or tags (inserting or deleting + * - any function _modifying_ the tree or tags (inserting or deleting * items, setting or clearing tags must exclude other modifications, and * exclude any functions reading the tree. - * - any function _reading_ the the tree or tags (looking up items or tags, + * - any function _reading_ the tree or tags (looking up items or tags, * gang lookups) must exclude modifications to the tree, but may occur * concurrently with other readers. * diff --git a/include/linux/raid/md_k.h b/include/linux/raid/md_k.h index de72c49747c8..a121f36f4437 100644 --- a/include/linux/raid/md_k.h +++ b/include/linux/raid/md_k.h @@ -201,7 +201,6 @@ struct mddev_s struct mutex reconfig_mutex; atomic_t active; - int changed; /* true if we might need to reread partition info */ int degraded; /* whether md should consider * adding a spare */ diff --git a/include/linux/relay.h b/include/linux/relay.h index 759a0f97bec2..6cd8c4425fc7 100644 --- a/include/linux/relay.h +++ b/include/linux/relay.h @@ -12,6 +12,7 @@ #include <linux/types.h> #include <linux/sched.h> +#include <linux/timer.h> #include <linux/wait.h> #include <linux/list.h> #include <linux/fs.h> @@ -38,7 +39,7 @@ struct rchan_buf size_t subbufs_consumed; /* count of sub-buffers consumed */ struct rchan *chan; /* associated channel */ wait_queue_head_t read_wait; /* reader wait queue */ - struct delayed_work wake_readers; /* reader wake-up work struct */ + struct timer_list timer; /* reader wake-up timer */ struct dentry *dentry; /* channel file dentry */ struct kref kref; /* channel buffer refcount */ struct page **page_array; /* array of current buffer pages */ diff --git a/include/linux/sched.h b/include/linux/sched.h index 3d95c480f58d..17b72d88c4cb 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -817,7 +817,7 @@ struct prio_array; struct task_struct { volatile long state; /* -1 unrunnable, 0 runnable, >0 stopped */ - struct thread_info *thread_info; + void *stack; atomic_t usage; unsigned int flags; /* per process flags, defined below */ unsigned int ptrace; @@ -1317,6 +1317,7 @@ extern int in_egroup_p(gid_t); extern void proc_caches_init(void); extern void flush_signals(struct task_struct *); +extern void ignore_signals(struct task_struct *); extern void flush_signal_handlers(struct task_struct *, int force_default); extern int dequeue_signal(struct task_struct *tsk, sigset_t *mask, siginfo_t *info); @@ -1512,8 +1513,8 @@ static inline void unlock_task_sighand(struct task_struct *tsk, #ifndef __HAVE_THREAD_FUNCTIONS -#define task_thread_info(task) (task)->thread_info -#define task_stack_page(task) ((void*)((task)->thread_info)) +#define task_thread_info(task) ((struct thread_info *)(task)->stack) +#define task_stack_page(task) ((task)->stack) static inline void setup_thread_stack(struct task_struct *p, struct task_struct *org) { @@ -1523,7 +1524,7 @@ static inline void setup_thread_stack(struct task_struct *p, struct task_struct static inline unsigned long *end_of_stack(struct task_struct *p) { - return (unsigned long *)(p->thread_info + 1); + return (unsigned long *)(task_thread_info(p) + 1); } #endif diff --git a/include/linux/security.h b/include/linux/security.h index 47e82c120f9a..9eb9e0fe0331 100644 --- a/include/linux/security.h +++ b/include/linux/security.h @@ -322,7 +322,7 @@ struct request_sock; * @dir contains the inode structure of parent of the new file. * @dentry contains the dentry structure of the new file. * @mode contains the mode of the new file. - * @dev contains the the device number. + * @dev contains the device number. * Return 0 if permission is granted. * @inode_rename: * Check for permission to rename a file or directory. diff --git a/include/linux/signal.h b/include/linux/signal.h index 14749056dd63..3fa0fab4a04b 100644 --- a/include/linux/signal.h +++ b/include/linux/signal.h @@ -243,6 +243,131 @@ extern int get_signal_to_deliver(siginfo_t *info, struct k_sigaction *return_ka, extern struct kmem_cache *sighand_cachep; +/* + * In POSIX a signal is sent either to a specific thread (Linux task) + * or to the process as a whole (Linux thread group). How the signal + * is sent determines whether it's to one thread or the whole group, + * which determines which signal mask(s) are involved in blocking it + * from being delivered until later. When the signal is delivered, + * either it's caught or ignored by a user handler or it has a default + * effect that applies to the whole thread group (POSIX process). + * + * The possible effects an unblocked signal set to SIG_DFL can have are: + * ignore - Nothing Happens + * terminate - kill the process, i.e. all threads in the group, + * similar to exit_group. The group leader (only) reports + * WIFSIGNALED status to its parent. + * coredump - write a core dump file describing all threads using + * the same mm and then kill all those threads + * stop - stop all the threads in the group, i.e. TASK_STOPPED state + * + * SIGKILL and SIGSTOP cannot be caught, blocked, or ignored. + * Other signals when not blocked and set to SIG_DFL behaves as follows. + * The job control signals also have other special effects. + * + * +--------------------+------------------+ + * | POSIX signal | default action | + * +--------------------+------------------+ + * | SIGHUP | terminate | + * | SIGINT | terminate | + * | SIGQUIT | coredump | + * | SIGILL | coredump | + * | SIGTRAP | coredump | + * | SIGABRT/SIGIOT | coredump | + * | SIGBUS | coredump | + * | SIGFPE | coredump | + * | SIGKILL | terminate(+) | + * | SIGUSR1 | terminate | + * | SIGSEGV | coredump | + * | SIGUSR2 | terminate | + * | SIGPIPE | terminate | + * | SIGALRM | terminate | + * | SIGTERM | terminate | + * | SIGCHLD | ignore | + * | SIGCONT | ignore(*) | + * | SIGSTOP | stop(*)(+) | + * | SIGTSTP | stop(*) | + * | SIGTTIN | stop(*) | + * | SIGTTOU | stop(*) | + * | SIGURG | ignore | + * | SIGXCPU | coredump | + * | SIGXFSZ | coredump | + * | SIGVTALRM | terminate | + * | SIGPROF | terminate | + * | SIGPOLL/SIGIO | terminate | + * | SIGSYS/SIGUNUSED | coredump | + * | SIGSTKFLT | terminate | + * | SIGWINCH | ignore | + * | SIGPWR | terminate | + * | SIGRTMIN-SIGRTMAX | terminate | + * +--------------------+------------------+ + * | non-POSIX signal | default action | + * +--------------------+------------------+ + * | SIGEMT | coredump | + * +--------------------+------------------+ + * + * (+) For SIGKILL and SIGSTOP the action is "always", not just "default". + * (*) Special job control effects: + * When SIGCONT is sent, it resumes the process (all threads in the group) + * from TASK_STOPPED state and also clears any pending/queued stop signals + * (any of those marked with "stop(*)"). This happens regardless of blocking, + * catching, or ignoring SIGCONT. When any stop signal is sent, it clears + * any pending/queued SIGCONT signals; this happens regardless of blocking, + * catching, or ignored the stop signal, though (except for SIGSTOP) the + * default action of stopping the process may happen later or never. + */ + +#ifdef SIGEMT +#define SIGEMT_MASK rt_sigmask(SIGEMT) +#else +#define SIGEMT_MASK 0 +#endif + +#if SIGRTMIN > BITS_PER_LONG +#define rt_sigmask(sig) (1ULL << ((sig)-1)) +#else +#define rt_sigmask(sig) sigmask(sig) +#endif +#define siginmask(sig, mask) (rt_sigmask(sig) & (mask)) + +#define SIG_KERNEL_ONLY_MASK (\ + rt_sigmask(SIGKILL) | rt_sigmask(SIGSTOP)) + +#define SIG_KERNEL_STOP_MASK (\ + rt_sigmask(SIGSTOP) | rt_sigmask(SIGTSTP) | \ + rt_sigmask(SIGTTIN) | rt_sigmask(SIGTTOU) ) + +#define SIG_KERNEL_COREDUMP_MASK (\ + rt_sigmask(SIGQUIT) | rt_sigmask(SIGILL) | \ + rt_sigmask(SIGTRAP) | rt_sigmask(SIGABRT) | \ + rt_sigmask(SIGFPE) | rt_sigmask(SIGSEGV) | \ + rt_sigmask(SIGBUS) | rt_sigmask(SIGSYS) | \ + rt_sigmask(SIGXCPU) | rt_sigmask(SIGXFSZ) | \ + SIGEMT_MASK ) + +#define SIG_KERNEL_IGNORE_MASK (\ + rt_sigmask(SIGCONT) | rt_sigmask(SIGCHLD) | \ + rt_sigmask(SIGWINCH) | rt_sigmask(SIGURG) ) + +#define sig_kernel_only(sig) \ + (((sig) < SIGRTMIN) && siginmask(sig, SIG_KERNEL_ONLY_MASK)) +#define sig_kernel_coredump(sig) \ + (((sig) < SIGRTMIN) && siginmask(sig, SIG_KERNEL_COREDUMP_MASK)) +#define sig_kernel_ignore(sig) \ + (((sig) < SIGRTMIN) && siginmask(sig, SIG_KERNEL_IGNORE_MASK)) +#define sig_kernel_stop(sig) \ + (((sig) < SIGRTMIN) && siginmask(sig, SIG_KERNEL_STOP_MASK)) + +#define sig_needs_tasklist(sig) ((sig) == SIGCONT) + +#define sig_user_defined(t, signr) \ + (((t)->sighand->action[(signr)-1].sa.sa_handler != SIG_DFL) && \ + ((t)->sighand->action[(signr)-1].sa.sa_handler != SIG_IGN)) + +#define sig_fatal(t, signr) \ + (!siginmask(signr, SIG_KERNEL_IGNORE_MASK|SIG_KERNEL_STOP_MASK) && \ + (t)->sighand->action[(signr)-1].sa.sa_handler == SIG_DFL) + #endif /* __KERNEL__ */ #endif /* _LINUX_SIGNAL_H */ diff --git a/include/linux/smp.h b/include/linux/smp.h index 7ba23ec8211b..3f70149eabbb 100644 --- a/include/linux/smp.h +++ b/include/linux/smp.h @@ -83,7 +83,6 @@ void smp_prepare_boot_cpu(void); * These macros fold the SMP functionality into a single CPU system */ #define raw_smp_processor_id() 0 -#define hard_smp_processor_id() 0 static inline int up_smp_call_function(void) { return 0; diff --git a/include/linux/sonypi.h b/include/linux/sonypi.h index f56d24734950..34d4b075f7b8 100644 --- a/include/linux/sonypi.h +++ b/include/linux/sonypi.h @@ -5,7 +5,7 @@ * * Copyright (C) 2005 Narayanan R S <nars@kadamba.org> - * Copyright (C) 2001-2002 Alcôve <www.alcove.com> + * Copyright (C) 2001-2002 Alcôve <www.alcove.com> * * Copyright (C) 2001 Michael Ashley <m.ashley@unsw.edu.au> * diff --git a/include/linux/sunrpc/svc.h b/include/linux/sunrpc/svc.h index 35fa4d5aadd0..4a7ae8ab6eb8 100644 --- a/include/linux/sunrpc/svc.h +++ b/include/linux/sunrpc/svc.h @@ -396,4 +396,23 @@ char * svc_print_addr(struct svc_rqst *, char *, size_t); #define RPC_MAX_ADDRBUFLEN (63U) +/* + * When we want to reduce the size of the reserved space in the response + * buffer, we need to take into account the size of any checksum data that + * may be at the end of the packet. This is difficult to determine exactly + * for all cases without actually generating the checksum, so we just use a + * static value. + */ +static inline void +svc_reserve_auth(struct svc_rqst *rqstp, int space) +{ + int added_space = 0; + + switch(rqstp->rq_authop->flavour) { + case RPC_AUTH_GSS: + added_space = RPC_MAX_AUTH_SIZE; + } + return svc_reserve(rqstp, space + added_space); +} + #endif /* SUNRPC_SVC_H */ diff --git a/include/linux/sunrpc/svcsock.h b/include/linux/sunrpc/svcsock.h index 7909687557bf..e21dd93ac4b7 100644 --- a/include/linux/sunrpc/svcsock.h +++ b/include/linux/sunrpc/svcsock.h @@ -37,7 +37,8 @@ struct svc_sock { atomic_t sk_reserved; /* space on outq that is reserved */ - spinlock_t sk_defer_lock; /* protects sk_deferred */ + spinlock_t sk_lock; /* protects sk_deferred and + * sk_info_authunix */ struct list_head sk_deferred; /* deferred requests that need to * be revisted */ struct mutex sk_mutex; /* to serialize sending data */ diff --git a/include/linux/suspend.h b/include/linux/suspend.h index 1f2f7ba9e709..9c7cb6430666 100644 --- a/include/linux/suspend.h +++ b/include/linux/suspend.h @@ -32,6 +32,24 @@ static inline int pm_prepare_console(void) { return 0; } static inline void pm_restore_console(void) {} #endif +/** + * struct hibernation_ops - hibernation platform support + * + * The methods in this structure allow a platform to override the default + * mechanism of shutting down the machine during a hibernation transition. + * + * All three methods must be assigned. + * + * @prepare: prepare system for hibernation + * @enter: shut down system after state has been saved to disk + * @finish: finish/clean up after state has been reloaded + */ +struct hibernation_ops { + int (*prepare)(void); + int (*enter)(void); + void (*finish)(void); +}; + #if defined(CONFIG_PM) && defined(CONFIG_SOFTWARE_SUSPEND) /* kernel/power/snapshot.c */ extern void __register_nosave_region(unsigned long b, unsigned long e, int km); @@ -47,12 +65,18 @@ extern int swsusp_page_is_forbidden(struct page *); extern void swsusp_set_page_free(struct page *); extern void swsusp_unset_page_free(struct page *); extern unsigned long get_safe_page(gfp_t gfp_mask); + +extern void hibernation_set_ops(struct hibernation_ops *ops); +extern int hibernate(void); #else static inline void register_nosave_region(unsigned long b, unsigned long e) {} static inline void register_nosave_region_late(unsigned long b, unsigned long e) {} static inline int swsusp_page_is_forbidden(struct page *p) { return 0; } static inline void swsusp_set_page_free(struct page *p) {} static inline void swsusp_unset_page_free(struct page *p) {} + +static inline void hibernation_set_ops(struct hibernation_ops *ops) {} +static inline int hibernate(void) { return -ENOSYS; } #endif /* defined(CONFIG_PM) && defined(CONFIG_SOFTWARE_SUSPEND) */ void save_processor_state(void); diff --git a/include/linux/svga.h b/include/linux/svga.h index e1cc552e04fe..13ad0b82ac28 100644 --- a/include/linux/svga.h +++ b/include/linux/svga.h @@ -113,6 +113,8 @@ void svga_tilefill(struct fb_info *info, struct fb_tilerect *rect); void svga_tileblit(struct fb_info *info, struct fb_tileblit *blit); void svga_tilecursor(struct fb_info *info, struct fb_tilecursor *cursor); int svga_get_tilemax(struct fb_info *info); +void svga_get_caps(struct fb_info *info, struct fb_blit_caps *caps, + struct fb_var_screeninfo *var); int svga_compute_pll(const struct svga_pll *pll, u32 f_wanted, u16 *m, u16 *n, u16 *r, int node); int svga_check_timings(const struct svga_timing_regs *tm, struct fb_var_screeninfo *var, int node); diff --git a/include/linux/syscalls.h b/include/linux/syscalls.h index 1912c6cbef55..3139f4412297 100644 --- a/include/linux/syscalls.h +++ b/include/linux/syscalls.h @@ -576,6 +576,8 @@ asmlinkage long sys_fstatat64(int dfd, char __user *filename, struct stat64 __user *statbuf, int flag); asmlinkage long sys_readlinkat(int dfd, const char __user *path, char __user *buf, int bufsiz); +asmlinkage long sys_utimensat(int dfd, char __user *filename, + struct timespec __user *utimes, int flags); asmlinkage long compat_sys_futimesat(unsigned int dfd, char __user *filename, struct compat_timeval __user *t); asmlinkage long compat_sys_newfstatat(unsigned int dfd, char __user * filename, diff --git a/include/linux/usb.h b/include/linux/usb.h index cfbd2bb8fa2c..94bd38a6d947 100644 --- a/include/linux/usb.h +++ b/include/linux/usb.h @@ -126,7 +126,7 @@ enum usb_interface_condition { * Each interface may have alternate settings. The initial configuration * of a device sets altsetting 0, but the device driver can change * that setting using usb_set_interface(). Alternate settings are often - * used to control the the use of periodic endpoints, such as by having + * used to control the use of periodic endpoints, such as by having * different endpoints use different amounts of reserved USB bandwidth. * All standards-conformant USB devices that use isochronous endpoints * will use them in non-default settings. diff --git a/include/linux/vmstat.h b/include/linux/vmstat.h index acb1f105870c..d9325cf8a134 100644 --- a/include/linux/vmstat.h +++ b/include/linux/vmstat.h @@ -212,8 +212,6 @@ extern void dec_zone_state(struct zone *, enum zone_stat_item); extern void __dec_zone_state(struct zone *, enum zone_stat_item); void refresh_cpu_vm_stats(int); -void refresh_vm_stats(void); - #else /* CONFIG_SMP */ /* @@ -260,7 +258,6 @@ static inline void __dec_zone_page_state(struct page *page, #define mod_zone_page_state __mod_zone_page_state static inline void refresh_cpu_vm_stats(int cpu) { } -static inline void refresh_vm_stats(void) { } #endif #endif /* _LINUX_VMSTAT_H */ diff --git a/include/linux/workqueue.h b/include/linux/workqueue.h index f16ba1e0687d..d555f31c0746 100644 --- a/include/linux/workqueue.h +++ b/include/linux/workqueue.h @@ -24,15 +24,13 @@ typedef void (*work_func_t)(struct work_struct *work); struct work_struct { atomic_long_t data; #define WORK_STRUCT_PENDING 0 /* T if work item pending execution */ -#define WORK_STRUCT_NOAUTOREL 1 /* F if work item automatically released on exec */ #define WORK_STRUCT_FLAG_MASK (3UL) #define WORK_STRUCT_WQ_DATA_MASK (~WORK_STRUCT_FLAG_MASK) struct list_head entry; work_func_t func; }; -#define WORK_DATA_INIT(autorelease) \ - ATOMIC_LONG_INIT((autorelease) << WORK_STRUCT_NOAUTOREL) +#define WORK_DATA_INIT() ATOMIC_LONG_INIT(0) struct delayed_work { struct work_struct work; @@ -44,14 +42,8 @@ struct execute_work { }; #define __WORK_INITIALIZER(n, f) { \ - .data = WORK_DATA_INIT(0), \ - .entry = { &(n).entry, &(n).entry }, \ - .func = (f), \ - } - -#define __WORK_INITIALIZER_NAR(n, f) { \ - .data = WORK_DATA_INIT(1), \ - .entry = { &(n).entry, &(n).entry }, \ + .data = WORK_DATA_INIT(), \ + .entry = { &(n).entry, &(n).entry }, \ .func = (f), \ } @@ -60,23 +52,12 @@ struct execute_work { .timer = TIMER_INITIALIZER(NULL, 0, 0), \ } -#define __DELAYED_WORK_INITIALIZER_NAR(n, f) { \ - .work = __WORK_INITIALIZER_NAR((n).work, (f)), \ - .timer = TIMER_INITIALIZER(NULL, 0, 0), \ - } - #define DECLARE_WORK(n, f) \ struct work_struct n = __WORK_INITIALIZER(n, f) -#define DECLARE_WORK_NAR(n, f) \ - struct work_struct n = __WORK_INITIALIZER_NAR(n, f) - #define DECLARE_DELAYED_WORK(n, f) \ struct delayed_work n = __DELAYED_WORK_INITIALIZER(n, f) -#define DECLARE_DELAYED_WORK_NAR(n, f) \ - struct dwork_struct n = __DELAYED_WORK_INITIALIZER_NAR(n, f) - /* * initialize a work item's function pointer */ @@ -95,16 +76,9 @@ struct execute_work { * assignment of the work data initializer allows the compiler * to generate better code. */ -#define INIT_WORK(_work, _func) \ - do { \ - (_work)->data = (atomic_long_t) WORK_DATA_INIT(0); \ - INIT_LIST_HEAD(&(_work)->entry); \ - PREPARE_WORK((_work), (_func)); \ - } while (0) - -#define INIT_WORK_NAR(_work, _func) \ +#define INIT_WORK(_work, _func) \ do { \ - (_work)->data = (atomic_long_t) WORK_DATA_INIT(1); \ + (_work)->data = (atomic_long_t) WORK_DATA_INIT(); \ INIT_LIST_HEAD(&(_work)->entry); \ PREPARE_WORK((_work), (_func)); \ } while (0) @@ -115,12 +89,6 @@ struct execute_work { init_timer(&(_work)->timer); \ } while (0) -#define INIT_DELAYED_WORK_NAR(_work, _func) \ - do { \ - INIT_WORK_NAR(&(_work)->work, (_func)); \ - init_timer(&(_work)->timer); \ - } while (0) - #define INIT_DELAYED_WORK_DEFERRABLE(_work, _func) \ do { \ INIT_WORK(&(_work)->work, (_func)); \ @@ -143,24 +111,10 @@ struct execute_work { work_pending(&(w)->work) /** - * work_release - Release a work item under execution - * @work: The work item to release - * - * This is used to release a work item that has been initialised with automatic - * release mode disabled (WORK_STRUCT_NOAUTOREL is set). This gives the work - * function the opportunity to grab auxiliary data from the container of the - * work_struct before clearing the pending bit as the work_struct may be - * subject to deallocation the moment the pending bit is cleared. - * - * In such a case, this should be called in the work function after it has - * fetched any data it may require from the containter of the work_struct. - * After this function has been called, the work_struct may be scheduled for - * further execution or it may be deallocated unless other precautions are - * taken. - * - * This should also be used to release a delayed work item. + * work_clear_pending - for internal use only, mark a work item as not pending + * @work: The work item in question */ -#define work_release(work) \ +#define work_clear_pending(work) \ clear_bit(WORK_STRUCT_PENDING, work_data_bits(work)) @@ -174,27 +128,28 @@ extern struct workqueue_struct *__create_workqueue(const char *name, extern void destroy_workqueue(struct workqueue_struct *wq); extern int FASTCALL(queue_work(struct workqueue_struct *wq, struct work_struct *work)); -extern int FASTCALL(queue_delayed_work(struct workqueue_struct *wq, struct delayed_work *work, unsigned long delay)); +extern int FASTCALL(queue_delayed_work(struct workqueue_struct *wq, + struct delayed_work *work, unsigned long delay)); extern int queue_delayed_work_on(int cpu, struct workqueue_struct *wq, - struct delayed_work *work, unsigned long delay); + struct delayed_work *work, unsigned long delay); + extern void FASTCALL(flush_workqueue(struct workqueue_struct *wq)); +extern void flush_scheduled_work(void); extern int FASTCALL(schedule_work(struct work_struct *work)); -extern int FASTCALL(run_scheduled_work(struct work_struct *work)); -extern int FASTCALL(schedule_delayed_work(struct delayed_work *work, unsigned long delay)); - -extern int schedule_delayed_work_on(int cpu, struct delayed_work *work, unsigned long delay); +extern int FASTCALL(schedule_delayed_work(struct delayed_work *work, + unsigned long delay)); +extern int schedule_delayed_work_on(int cpu, struct delayed_work *work, + unsigned long delay); extern int schedule_on_each_cpu(work_func_t func); -extern void flush_scheduled_work(void); extern int current_is_keventd(void); extern int keventd_up(void); extern void init_workqueues(void); -void cancel_rearming_delayed_work(struct delayed_work *work); -void cancel_rearming_delayed_workqueue(struct workqueue_struct *, - struct delayed_work *); int execute_in_process_context(work_func_t fn, struct execute_work *); +extern void cancel_work_sync(struct work_struct *work); + /* * Kill off a pending schedule_delayed_work(). Note that the work callback * function may still be running on return from cancel_delayed_work(), unless @@ -207,8 +162,18 @@ static inline int cancel_delayed_work(struct delayed_work *work) ret = del_timer(&work->timer); if (ret) - work_release(&work->work); + work_clear_pending(&work->work); return ret; } +extern void cancel_rearming_delayed_work(struct delayed_work *work); + +/* Obsolete. use cancel_rearming_delayed_work() */ +static inline +void cancel_rearming_delayed_workqueue(struct workqueue_struct *wq, + struct delayed_work *work) +{ + cancel_rearming_delayed_work(work); +} + #endif diff --git a/include/net/irda/af_irda.h b/include/net/irda/af_irda.h index 7a209f61c482..0df574931522 100644 --- a/include/net/irda/af_irda.h +++ b/include/net/irda/af_irda.h @@ -17,7 +17,7 @@ * published by the Free Software Foundation; either version 2 of * the License, or (at your option) any later version. * - * Neither Dag Brattli nor University of Tromsø admit liability nor + * Neither Dag Brattli nor University of Tromsø admit liability nor * provide warranty for any of this software. This material is * provided "AS-IS" and at no charge. * diff --git a/include/net/irda/irda.h b/include/net/irda/irda.h index 89fe534045f1..36bee441aa56 100644 --- a/include/net/irda/irda.h +++ b/include/net/irda/irda.h @@ -17,7 +17,7 @@ * published by the Free Software Foundation; either version 2 of * the License, or (at your option) any later version. * - * Neither Dag Brattli nor University of Tromsø admit liability nor + * Neither Dag Brattli nor University of Tromsø admit liability nor * provide warranty for any of this software. This material is * provided "AS-IS" and at no charge. * diff --git a/include/net/irda/iriap.h b/include/net/irda/iriap.h index 2007c5a0a43f..fcc896491a95 100644 --- a/include/net/irda/iriap.h +++ b/include/net/irda/iriap.h @@ -17,7 +17,7 @@ * published by the Free Software Foundation; either version 2 of * the License, or (at your option) any later version. * - * Neither Dag Brattli nor University of Tromsø admit liability nor + * Neither Dag Brattli nor University of Tromsø admit liability nor * provide warranty for any of this software. This material is * provided "AS-IS" and at no charge. * diff --git a/include/net/irda/iriap_event.h b/include/net/irda/iriap_event.h index 4ca3d2071b03..89747f06d9eb 100644 --- a/include/net/irda/iriap_event.h +++ b/include/net/irda/iriap_event.h @@ -16,7 +16,7 @@ * published by the Free Software Foundation; either version 2 of * the License, or (at your option) any later version. * - * Neither Dag Brattli nor University of Tromsø admit liability nor + * Neither Dag Brattli nor University of Tromsø admit liability nor * provide warranty for any of this software. This material is * provided "AS-IS" and at no charge. * diff --git a/include/net/irda/irias_object.h b/include/net/irda/irias_object.h index c41196b87955..83f78081799c 100644 --- a/include/net/irda/irias_object.h +++ b/include/net/irda/irias_object.h @@ -16,7 +16,7 @@ * published by the Free Software Foundation; either version 2 of * the License, or (at your option) any later version. * - * Neither Dag Brattli nor University of Tromsø admit liability nor + * Neither Dag Brattli nor University of Tromsø admit liability nor * provide warranty for any of this software. This material is * provided "AS-IS" and at no charge. * diff --git a/include/net/irda/irlan_client.h b/include/net/irda/irlan_client.h index 736dabe211e3..fa8455eda280 100644 --- a/include/net/irda/irlan_client.h +++ b/include/net/irda/irlan_client.h @@ -16,7 +16,7 @@ * published by the Free Software Foundation; either version 2 of * the License, or (at your option) any later version. * - * Neither Dag Brattli nor University of Tromsø admit liability nor + * Neither Dag Brattli nor University of Tromsø admit liability nor * provide warranty for any of this software. This material is * provided "AS-IS" and at no charge. * diff --git a/include/net/irda/irlan_common.h b/include/net/irda/irlan_common.h index 9592c374b41d..73cacb3ac16c 100644 --- a/include/net/irda/irlan_common.h +++ b/include/net/irda/irlan_common.h @@ -17,7 +17,7 @@ * published by the Free Software Foundation; either version 2 of * the License, or (at your option) any later version. * - * Neither Dag Brattli nor University of Tromsø admit liability nor + * Neither Dag Brattli nor University of Tromsø admit liability nor * provide warranty for any of this software. This material is * provided "AS-IS" and at no charge. * diff --git a/include/net/irda/irlan_eth.h b/include/net/irda/irlan_eth.h index 9a9b3619d305..0062347600b9 100644 --- a/include/net/irda/irlan_eth.h +++ b/include/net/irda/irlan_eth.h @@ -16,7 +16,7 @@ * published by the Free Software Foundation; either version 2 of * the License, or (at your option) any later version. * - * Neither Dag Brattli nor University of Tromsø admit liability nor + * Neither Dag Brattli nor University of Tromsø admit liability nor * provide warranty for any of this software. This material is * provided "AS-IS" and at no charge. * diff --git a/include/net/irda/irlan_event.h b/include/net/irda/irlan_event.h index b9baac9eb8b6..6d9539f05806 100644 --- a/include/net/irda/irlan_event.h +++ b/include/net/irda/irlan_event.h @@ -16,7 +16,7 @@ * published by the Free Software Foundation; either version 2 of * the License, or (at your option) any later version. * - * Neither Dag Brattli nor University of Tromsø admit liability nor + * Neither Dag Brattli nor University of Tromsø admit liability nor * provide warranty for any of this software. This material is * provided "AS-IS" and at no charge. * diff --git a/include/net/irda/irlan_filter.h b/include/net/irda/irlan_filter.h index 1720539ac2c1..a5a2539485bd 100644 --- a/include/net/irda/irlan_filter.h +++ b/include/net/irda/irlan_filter.h @@ -16,7 +16,7 @@ * published by the Free Software Foundation; either version 2 of * the License, or (at your option) any later version. * - * Neither Dag Brattli nor University of Tromsø admit liability nor + * Neither Dag Brattli nor University of Tromsø admit liability nor * provide warranty for any of this software. This material is * provided "AS-IS" and at no charge. * diff --git a/include/net/irda/irlan_provider.h b/include/net/irda/irlan_provider.h index ca51d5b7c999..92f3b0e1029b 100644 --- a/include/net/irda/irlan_provider.h +++ b/include/net/irda/irlan_provider.h @@ -16,7 +16,7 @@ * published by the Free Software Foundation; either version 2 of * the License, or (at your option) any later version. * - * Neither Dag Brattli nor University of Tromsø admit liability nor + * Neither Dag Brattli nor University of Tromsø admit liability nor * provide warranty for any of this software. This material is * provided "AS-IS" and at no charge. * diff --git a/include/net/irda/irlap.h b/include/net/irda/irlap.h index e77eb88d9226..f0248fb8e196 100644 --- a/include/net/irda/irlap.h +++ b/include/net/irda/irlap.h @@ -18,7 +18,7 @@ * published by the Free Software Foundation; either version 2 of * the License, or (at your option) any later version. * - * Neither Dag Brattli nor University of Tromsø admit liability nor + * Neither Dag Brattli nor University of Tromsø admit liability nor * provide warranty for any of this software. This material is * provided "AS-IS" and at no charge. * diff --git a/include/net/irda/irlmp.h b/include/net/irda/irlmp.h index e212b9bc2503..3ffc1d0f93d6 100644 --- a/include/net/irda/irlmp.h +++ b/include/net/irda/irlmp.h @@ -18,7 +18,7 @@ * published by the Free Software Foundation; either version 2 of * the License, or (at your option) any later version. * - * Neither Dag Brattli nor University of Tromsø admit liability nor + * Neither Dag Brattli nor University of Tromsø admit liability nor * provide warranty for any of this software. This material is * provided "AS-IS" and at no charge. * diff --git a/include/net/irda/irlmp_event.h b/include/net/irda/irlmp_event.h index 03c6f81a502a..e03ae4ae3963 100644 --- a/include/net/irda/irlmp_event.h +++ b/include/net/irda/irlmp_event.h @@ -18,7 +18,7 @@ * published by the Free Software Foundation; either version 2 of * the License, or (at your option) any later version. * - * Neither Dag Brattli nor University of Tromsø admit liability nor + * Neither Dag Brattli nor University of Tromsø admit liability nor * provide warranty for any of this software. This material is * provided "AS-IS" and at no charge. * diff --git a/include/net/irda/irlmp_frame.h b/include/net/irda/irlmp_frame.h index c463f8bca856..1906eb71422e 100644 --- a/include/net/irda/irlmp_frame.h +++ b/include/net/irda/irlmp_frame.h @@ -17,7 +17,7 @@ * published by the Free Software Foundation; either version 2 of * the License, or (at your option) any later version. * - * Neither Dag Brattli nor University of Tromsø admit liability nor + * Neither Dag Brattli nor University of Tromsø admit liability nor * provide warranty for any of this software. This material is * provided "AS-IS" and at no charge. * diff --git a/include/net/irda/irmod.h b/include/net/irda/irmod.h index 72b446c1e22c..86f0dbb8ee5d 100644 --- a/include/net/irda/irmod.h +++ b/include/net/irda/irmod.h @@ -17,7 +17,7 @@ * published by the Free Software Foundation; either version 2 of * the License, or (at your option) any later version. * - * Neither Dag Brattli nor University of Tromsø admit liability nor + * Neither Dag Brattli nor University of Tromsø admit liability nor * provide warranty for any of this software. This material is * provided "AS-IS" and at no charg. * diff --git a/include/net/irda/irqueue.h b/include/net/irda/irqueue.h index 335b0ace9665..37f512bd6733 100644 --- a/include/net/irda/irqueue.h +++ b/include/net/irda/irqueue.h @@ -21,7 +21,7 @@ * published by the Free Software Foundation; either version 2 of * the License, or (at your option) any later version. * - * Neither Dag Brattli nor University of Tromsø admit liability nor + * Neither Dag Brattli nor University of Tromsø admit liability nor * provide warranty for any of this software. This material is * provided "AS-IS" and at no charge. * diff --git a/include/net/irda/irttp.h b/include/net/irda/irttp.h index a899e5837be8..cf80c1af5854 100644 --- a/include/net/irda/irttp.h +++ b/include/net/irda/irttp.h @@ -18,7 +18,7 @@ * published by the Free Software Foundation; either version 2 of * the License, or (at your option) any later version. * - * Neither Dag Brattli nor University of Tromsø admit liability nor + * Neither Dag Brattli nor University of Tromsø admit liability nor * provide warranty for any of this software. This material is * provided "AS-IS" and at no charge. * diff --git a/include/net/irda/parameters.h b/include/net/irda/parameters.h index 3a605d37ddbf..c0d938847bd3 100644 --- a/include/net/irda/parameters.h +++ b/include/net/irda/parameters.h @@ -26,7 +26,7 @@ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, * MA 02111-1307 USA * - * Michel Dänzer <daenzer@debian.org>, 10/2001 + * Michel Dänzer <daenzer@debian.org>, 10/2001 * - simplify irda_pv_t to avoid endianness issues * ********************************************************************/ diff --git a/include/net/irda/timer.h b/include/net/irda/timer.h index cb61568547d1..cb2615ccf761 100644 --- a/include/net/irda/timer.h +++ b/include/net/irda/timer.h @@ -18,7 +18,7 @@ * published by the Free Software Foundation; either version 2 of * the License, or (at your option) any later version. * - * Neither Dag Brattli nor University of Tromsø admit liability nor + * Neither Dag Brattli nor University of Tromsø admit liability nor * provide warranty for any of this software. This material is * provided "AS-IS" and at no charge. * diff --git a/include/net/irda/wrapper.h b/include/net/irda/wrapper.h index 98768b3f9e31..2942ad6ab932 100644 --- a/include/net/irda/wrapper.h +++ b/include/net/irda/wrapper.h @@ -17,7 +17,7 @@ * published by the Free Software Foundation; either version 2 of * the License, or (at your option) any later version. * - * Neither Dag Brattli nor University of Tromsø admit liability nor + * Neither Dag Brattli nor University of Tromsø admit liability nor * provide warranty for any of this software. This material is * provided "AS-IS" and at no charge. * diff --git a/init/Kconfig b/init/Kconfig index d0edf42f4dba..e63a017c391e 100644 --- a/init/Kconfig +++ b/init/Kconfig @@ -143,9 +143,7 @@ config POSIX_MQUEUE queues every message has a priority which decides about succession of receiving it by a process. If you want to compile and run programs written e.g. for Solaris with use of its POSIX message - queues (functions mq_*) say Y here. To use this feature you will - also need mqueue library, available from - <http://www.mat.uni.torun.pl/~wrona/posix_ipc/> + queues (functions mq_*) say Y here. POSIX message queues are visible as a filesystem called 'mqueue' and can be mounted somewhere if you want to do filesystem @@ -308,7 +306,7 @@ config SYSFS_DEPRECATED releases. If enabled, this option will also move any device structures - that belong to a class, back into the /sys/class heirachy, in + that belong to a class, back into the /sys/class hierarchy, in order to support older versions of udev. If you are using a distro that was released in 2006 or later, @@ -504,6 +502,15 @@ config VM_EVENT_COUNTERS on EMBEDDED systems. /proc/vmstat will only show page counts if VM event counters are disabled. +config SLUB_DEBUG + default y + bool "Enable SLUB debugging support" if EMBEDDED + help + SLUB has extensive debug support features. Disabling these can + result in significant savings in code size. This also disables + SLUB sysfs support. /sys/slab will not exist and there will be + no support for cache validation etc. + choice prompt "Choose SLAB allocator" default SLAB @@ -514,9 +521,9 @@ config SLAB bool "SLAB" help The regular slab allocator that is established and known to work - well in all environments. It organizes chache hot objects in + well in all environments. It organizes cache hot objects in per cpu and per node queues. SLAB is the default choice for - slab allocator. + a slab allocator. config SLUB depends on EXPERIMENTAL && !ARCH_USES_SLAB_PAGE_STRUCT @@ -526,21 +533,20 @@ config SLUB instead of managing queues of cached objects (SLAB approach). Per cpu caching is realized using slabs of objects instead of queues of objects. SLUB can use memory efficiently - way and has enhanced diagnostics. + and has enhanced diagnostics. config SLOB # -# SLOB cannot support SMP because SLAB_DESTROY_BY_RCU does not work -# properly. +# SLOB does not support SMP because SLAB_DESTROY_BY_RCU is unsupported # depends on EMBEDDED && !SMP && !SPARSEMEM bool "SLOB (Simple Allocator)" help SLOB replaces the SLAB allocator with a drastically simpler allocator. SLOB is more space efficient that SLAB but does not - scale well (single lock for all operations) and is more susceptible - to fragmentation. SLOB it is a great choice to reduce - memory usage and code size for embedded systems. + scale well (single lock for all operations) and is also highly + susceptible to fragmentation. SLUB can accomplish a higher object + density. It is usually better to use SLUB instead of SLOB. endchoice diff --git a/init/do_mounts.c b/init/do_mounts.c index 3f57ed4599d6..46fe407fb03e 100644 --- a/init/do_mounts.c +++ b/init/do_mounts.c @@ -7,6 +7,7 @@ #include <linux/root_dev.h> #include <linux/security.h> #include <linux/delay.h> +#include <linux/genhd.h> #include <linux/mount.h> #include <linux/device.h> #include <linux/init.h> @@ -308,17 +309,21 @@ retry: /* * Allow the user to distinguish between failed sys_open * and bad superblock on root device. + * and give them a list of the available devices */ #ifdef CONFIG_BLOCK __bdevname(ROOT_DEV, b); #endif printk("VFS: Cannot open root device \"%s\" or %s\n", root_device_name, b); - printk("Please append a correct \"root=\" boot option\n"); + printk("Please append a correct \"root=\" boot option; here are the available partitions:\n"); + printk_all_partitions(); panic("VFS: Unable to mount root fs on %s", b); } + printk("List of all partitions:\n"); + printk_all_partitions(); printk("No filesystem could mount root, tried: "); for (p = fs_names; *p; p += strlen(p)+1) printk(" %s", p); diff --git a/init/main.c b/init/main.c index c1537e0ddceb..e8d080cab443 100644 --- a/init/main.c +++ b/init/main.c @@ -54,6 +54,7 @@ #include <linux/lockdep.h> #include <linux/pid_namespace.h> #include <linux/device.h> +#include <linux/kthread.h> #include <asm/io.h> #include <asm/bugs.h> @@ -425,8 +426,12 @@ static void __init setup_command_line(char *command_line) static void noinline rest_init(void) __releases(kernel_lock) { + int pid; + kernel_thread(kernel_init, NULL, CLONE_FS | CLONE_SIGHAND); numa_default_policy(); + pid = kernel_thread(kthreadd, NULL, CLONE_FS | CLONE_FILES); + kthreadd_task = find_task_by_pid(pid); unlock_kernel(); /* diff --git a/kernel/Kconfig.preempt b/kernel/Kconfig.preempt index 0b46a5dff4c0..c64ce9c14207 100644 --- a/kernel/Kconfig.preempt +++ b/kernel/Kconfig.preempt @@ -23,7 +23,7 @@ config PREEMPT_VOLUNTARY "explicit preemption points" to the kernel code. These new preemption points have been selected to reduce the maximum latency of rescheduling, providing faster application reactions, - at the cost of slighly lower throughput. + at the cost of slightly lower throughput. This allows reaction to interactive events by allowing a low priority process to voluntarily preempt itself even if it @@ -43,7 +43,7 @@ config PREEMPT even if it is in kernel mode executing a system call and would otherwise not be about to reach a natural preemption point. This allows applications to run more 'smoothly' even when the - system is under load, at the cost of slighly lower throughput + system is under load, at the cost of slightly lower throughput and a slight runtime overhead to kernel code. Select this if you are building a kernel for a desktop or diff --git a/kernel/configs.c b/kernel/configs.c index 8fa1fb28f8a7..e84d3f9c6c7b 100644 --- a/kernel/configs.c +++ b/kernel/configs.c @@ -61,18 +61,9 @@ static ssize_t ikconfig_read_current(struct file *file, char __user *buf, size_t len, loff_t * offset) { - loff_t pos = *offset; - ssize_t count; - - if (pos >= kernel_config_data_size) - return 0; - - count = min(len, (size_t)(kernel_config_data_size - pos)); - if (copy_to_user(buf, kernel_config_data + MAGIC_SIZE + pos, count)) - return -EFAULT; - - *offset += count; - return count; + return simple_read_from_buffer(buf, len, offset, + kernel_config_data + MAGIC_SIZE, + kernel_config_data_size); } static const struct file_operations ikconfig_file_ops = { diff --git a/kernel/cpu.c b/kernel/cpu.c index 36e70845cfc3..208cf3497c10 100644 --- a/kernel/cpu.c +++ b/kernel/cpu.c @@ -97,7 +97,7 @@ static inline void check_for_tasks(int cpu) (!cputime_eq(p->utime, cputime_zero) || !cputime_eq(p->stime, cputime_zero))) printk(KERN_WARNING "Task %s (pid = %d) is on cpu %d\ - (state = %ld, flags = %lx) \n", + (state = %ld, flags = %x) \n", p->comm, p->pid, cpu, p->state, p->flags); } write_unlock_irq(&tasklist_lock); @@ -120,11 +120,13 @@ static int take_cpu_down(void *unused) } /* Requires cpu_add_remove_lock to be held */ -static int _cpu_down(unsigned int cpu) +static int _cpu_down(unsigned int cpu, int tasks_frozen) { - int err; + int err, nr_calls = 0; struct task_struct *p; cpumask_t old_allowed, tmp; + void *hcpu = (void *)(long)cpu; + unsigned long mod = tasks_frozen ? CPU_TASKS_FROZEN : 0; if (num_online_cpus() == 1) return -EBUSY; @@ -132,12 +134,16 @@ static int _cpu_down(unsigned int cpu) if (!cpu_online(cpu)) return -EINVAL; - err = raw_notifier_call_chain(&cpu_chain, CPU_DOWN_PREPARE, - (void *)(long)cpu); + raw_notifier_call_chain(&cpu_chain, CPU_LOCK_ACQUIRE, hcpu); + err = __raw_notifier_call_chain(&cpu_chain, CPU_DOWN_PREPARE | mod, + hcpu, -1, &nr_calls); if (err == NOTIFY_BAD) { + __raw_notifier_call_chain(&cpu_chain, CPU_DOWN_FAILED | mod, + hcpu, nr_calls, NULL); printk("%s: attempt to take down CPU %u failed\n", __FUNCTION__, cpu); - return -EINVAL; + err = -EINVAL; + goto out_release; } /* Ensure that we are not runnable on dying cpu */ @@ -152,8 +158,8 @@ static int _cpu_down(unsigned int cpu) if (IS_ERR(p) || cpu_online(cpu)) { /* CPU didn't die: tell everyone. Can't complain. */ - if (raw_notifier_call_chain(&cpu_chain, CPU_DOWN_FAILED, - (void *)(long)cpu) == NOTIFY_BAD) + if (raw_notifier_call_chain(&cpu_chain, CPU_DOWN_FAILED | mod, + hcpu) == NOTIFY_BAD) BUG(); if (IS_ERR(p)) { @@ -170,13 +176,9 @@ static int _cpu_down(unsigned int cpu) /* This actually kills the CPU. */ __cpu_die(cpu); - /* Move it here so it can run. */ - kthread_bind(p, get_cpu()); - put_cpu(); - /* CPU is completely dead: tell everyone. Too late to complain. */ - if (raw_notifier_call_chain(&cpu_chain, CPU_DEAD, - (void *)(long)cpu) == NOTIFY_BAD) + if (raw_notifier_call_chain(&cpu_chain, CPU_DEAD | mod, + hcpu) == NOTIFY_BAD) BUG(); check_for_tasks(cpu); @@ -185,6 +187,8 @@ out_thread: err = kthread_stop(p); out_allowed: set_cpus_allowed(current, old_allowed); +out_release: + raw_notifier_call_chain(&cpu_chain, CPU_LOCK_RELEASE, hcpu); return err; } @@ -196,7 +200,7 @@ int cpu_down(unsigned int cpu) if (cpu_hotplug_disabled) err = -EBUSY; else - err = _cpu_down(cpu); + err = _cpu_down(cpu, 0); mutex_unlock(&cpu_add_remove_lock); return err; @@ -204,15 +208,18 @@ int cpu_down(unsigned int cpu) #endif /*CONFIG_HOTPLUG_CPU*/ /* Requires cpu_add_remove_lock to be held */ -static int __cpuinit _cpu_up(unsigned int cpu) +static int __cpuinit _cpu_up(unsigned int cpu, int tasks_frozen) { - int ret; + int ret, nr_calls = 0; void *hcpu = (void *)(long)cpu; + unsigned long mod = tasks_frozen ? CPU_TASKS_FROZEN : 0; if (cpu_online(cpu) || !cpu_present(cpu)) return -EINVAL; - ret = raw_notifier_call_chain(&cpu_chain, CPU_UP_PREPARE, hcpu); + raw_notifier_call_chain(&cpu_chain, CPU_LOCK_ACQUIRE, hcpu); + ret = __raw_notifier_call_chain(&cpu_chain, CPU_UP_PREPARE | mod, hcpu, + -1, &nr_calls); if (ret == NOTIFY_BAD) { printk("%s: attempt to bring up CPU %u failed\n", __FUNCTION__, cpu); @@ -229,12 +236,13 @@ static int __cpuinit _cpu_up(unsigned int cpu) BUG_ON(!cpu_online(cpu)); /* Now call notifier in preparation. */ - raw_notifier_call_chain(&cpu_chain, CPU_ONLINE, hcpu); + raw_notifier_call_chain(&cpu_chain, CPU_ONLINE | mod, hcpu); out_notify: if (ret != 0) - raw_notifier_call_chain(&cpu_chain, - CPU_UP_CANCELED, hcpu); + __raw_notifier_call_chain(&cpu_chain, + CPU_UP_CANCELED | mod, hcpu, nr_calls, NULL); + raw_notifier_call_chain(&cpu_chain, CPU_LOCK_RELEASE, hcpu); return ret; } @@ -247,19 +255,13 @@ int __cpuinit cpu_up(unsigned int cpu) if (cpu_hotplug_disabled) err = -EBUSY; else - err = _cpu_up(cpu); + err = _cpu_up(cpu, 0); mutex_unlock(&cpu_add_remove_lock); return err; } #ifdef CONFIG_SUSPEND_SMP -/* Needed to prevent the microcode driver from requesting firmware in its CPU - * hotplug notifier during the suspend/resume. - */ -int suspend_cpu_hotplug; -EXPORT_SYMBOL(suspend_cpu_hotplug); - static cpumask_t frozen_cpus; int disable_nonboot_cpus(void) @@ -267,7 +269,6 @@ int disable_nonboot_cpus(void) int cpu, first_cpu, error = 0; mutex_lock(&cpu_add_remove_lock); - suspend_cpu_hotplug = 1; first_cpu = first_cpu(cpu_online_map); /* We take down all of the non-boot CPUs in one shot to avoid races * with the userspace trying to use the CPU hotplug at the same time @@ -277,7 +278,7 @@ int disable_nonboot_cpus(void) for_each_online_cpu(cpu) { if (cpu == first_cpu) continue; - error = _cpu_down(cpu); + error = _cpu_down(cpu, 1); if (!error) { cpu_set(cpu, frozen_cpus); printk("CPU%d is down\n", cpu); @@ -294,7 +295,6 @@ int disable_nonboot_cpus(void) } else { printk(KERN_ERR "Non-boot CPUs are not disabled\n"); } - suspend_cpu_hotplug = 0; mutex_unlock(&cpu_add_remove_lock); return error; } @@ -309,10 +309,9 @@ void enable_nonboot_cpus(void) if (cpus_empty(frozen_cpus)) goto out; - suspend_cpu_hotplug = 1; printk("Enabling non-boot CPUs ...\n"); for_each_cpu_mask(cpu, frozen_cpus) { - error = _cpu_up(cpu); + error = _cpu_up(cpu, 1); if (!error) { printk("CPU%d is up\n", cpu); continue; @@ -320,7 +319,6 @@ void enable_nonboot_cpus(void) printk(KERN_WARNING "Error taking CPU%d up: %d\n", cpu, error); } cpus_clear(frozen_cpus); - suspend_cpu_hotplug = 0; out: mutex_unlock(&cpu_add_remove_lock); } diff --git a/kernel/cpuset.c b/kernel/cpuset.c index 88b416dfbc72..f57854b08922 100644 --- a/kernel/cpuset.c +++ b/kernel/cpuset.c @@ -1772,12 +1772,7 @@ static ssize_t cpuset_tasks_read(struct file *file, char __user *buf, { struct ctr_struct *ctr = file->private_data; - if (*ppos + nbytes > ctr->bufsz) - nbytes = ctr->bufsz - *ppos; - if (copy_to_user(buf, ctr->buf + *ppos, nbytes)) - return -EFAULT; - *ppos += nbytes; - return nbytes; + return simple_read_from_buffer(buf, nbytes, ppos, ctr->buf, ctr->bufsz); } static int cpuset_tasks_release(struct inode *unused_inode, struct file *file) diff --git a/kernel/exit.c b/kernel/exit.c index f5a7abb621f3..b0c6f0c3a2df 100644 --- a/kernel/exit.c +++ b/kernel/exit.c @@ -26,6 +26,7 @@ #include <linux/profile.h> #include <linux/mount.h> #include <linux/proc_fs.h> +#include <linux/kthread.h> #include <linux/mempolicy.h> #include <linux/taskstats_kern.h> #include <linux/delayacct.h> @@ -254,26 +255,25 @@ static int has_stopped_jobs(struct pid *pgrp) } /** - * reparent_to_init - Reparent the calling kernel thread to the init task of the pid space that the thread belongs to. + * reparent_to_kthreadd - Reparent the calling kernel thread to kthreadd * * If a kernel thread is launched as a result of a system call, or if - * it ever exits, it should generally reparent itself to init so that - * it is correctly cleaned up on exit. + * it ever exits, it should generally reparent itself to kthreadd so it + * isn't in the way of other processes and is correctly cleaned up on exit. * * The various task state such as scheduling policy and priority may have * been inherited from a user process, so we reset them to sane values here. * - * NOTE that reparent_to_init() gives the caller full capabilities. + * NOTE that reparent_to_kthreadd() gives the caller full capabilities. */ -static void reparent_to_init(void) +static void reparent_to_kthreadd(void) { write_lock_irq(&tasklist_lock); ptrace_unlink(current); /* Reparent to init */ remove_parent(current); - current->parent = child_reaper(current); - current->real_parent = child_reaper(current); + current->real_parent = current->parent = kthreadd_task; add_parent(current); /* Set the exit signal to SIGCHLD so we signal init on exit */ @@ -347,7 +347,7 @@ int disallow_signal(int sig) return -EINVAL; spin_lock_irq(¤t->sighand->siglock); - sigaddset(¤t->blocked, sig); + current->sighand->action[(sig)-1].sa.sa_handler = SIG_IGN; recalc_sigpending(); spin_unlock_irq(¤t->sighand->siglock); return 0; @@ -400,7 +400,7 @@ void daemonize(const char *name, ...) current->files = init_task.files; atomic_inc(¤t->files->count); - reparent_to_init(); + reparent_to_kthreadd(); } EXPORT_SYMBOL(daemonize); diff --git a/kernel/fork.c b/kernel/fork.c index a8dd75d4992b..5dd3979747f5 100644 --- a/kernel/fork.c +++ b/kernel/fork.c @@ -105,7 +105,7 @@ static struct kmem_cache *mm_cachep; void free_task(struct task_struct *tsk) { - free_thread_info(tsk->thread_info); + free_thread_info(tsk->stack); rt_mutex_debug_task_free(tsk); free_task_struct(tsk); } @@ -175,7 +175,7 @@ static struct task_struct *dup_task_struct(struct task_struct *orig) } *tsk = *orig; - tsk->thread_info = ti; + tsk->stack = ti; setup_thread_stack(tsk, orig); #ifdef CONFIG_CC_STACKPROTECTOR diff --git a/kernel/futex.c b/kernel/futex.c index 600bc9d801f2..b7ce15c67e32 100644 --- a/kernel/futex.c +++ b/kernel/futex.c @@ -16,6 +16,9 @@ * Copyright (C) 2006 Red Hat, Inc., Ingo Molnar <mingo@redhat.com> * Copyright (C) 2006 Timesys Corp., Thomas Gleixner <tglx@timesys.com> * + * PRIVATE futexes by Eric Dumazet + * Copyright (C) 2007 Eric Dumazet <dada1@cosmosbay.com> + * * Thanks to Ben LaHaise for yelling "hashed waitqueues" loudly * enough at me, Linus for the original (flawed) idea, Matthew * Kirkwood for proof-of-concept implementation. @@ -53,6 +56,12 @@ #include "rtmutex_common.h" +#ifdef CONFIG_DEBUG_RT_MUTEXES +# include "rtmutex-debug.h" +#else +# include "rtmutex.h" +#endif + #define FUTEX_HASHBITS (CONFIG_BASE_SMALL ? 4 : 8) /* @@ -81,12 +90,12 @@ struct futex_pi_state { * we can wake only the relevant ones (hashed queues may be shared). * * A futex_q has a woken state, just like tasks have TASK_RUNNING. - * It is considered woken when list_empty(&q->list) || q->lock_ptr == 0. + * It is considered woken when plist_node_empty(&q->list) || q->lock_ptr == 0. * The order of wakup is always to make the first condition true, then * wake up q->waiters, then make the second condition true. */ struct futex_q { - struct list_head list; + struct plist_node list; wait_queue_head_t waiters; /* Which hash list lock to use: */ @@ -102,14 +111,20 @@ struct futex_q { /* Optional priority inheritance state: */ struct futex_pi_state *pi_state; struct task_struct *task; + + /* + * This waiter is used in case of requeue from a + * normal futex to a PI-futex + */ + struct rt_mutex_waiter waiter; }; /* * Split the global futex_lock into every hash list lock. */ struct futex_hash_bucket { - spinlock_t lock; - struct list_head chain; + spinlock_t lock; + struct plist_head chain; }; static struct futex_hash_bucket futex_queues[1<<FUTEX_HASHBITS]; @@ -138,19 +153,26 @@ static inline int match_futex(union futex_key *key1, union futex_key *key2) && key1->both.offset == key2->both.offset); } -/* - * Get parameters which are the keys for a futex. +/** + * get_futex_key - Get parameters which are the keys for a futex. + * @uaddr: virtual address of the futex + * @shared: NULL for a PROCESS_PRIVATE futex, + * ¤t->mm->mmap_sem for a PROCESS_SHARED futex + * @key: address where result is stored. + * + * Returns a negative error code or 0 + * The key words are stored in *key on success. * * For shared mappings, it's (page->index, vma->vm_file->f_path.dentry->d_inode, * offset_within_page). For private mappings, it's (uaddr, current->mm). * We can usually work out the index without swapping in the page. * - * Returns: 0, or negative error code. - * The key words are stored in *key on success. - * - * Should be called with ¤t->mm->mmap_sem but NOT any spinlocks. + * fshared is NULL for PROCESS_PRIVATE futexes + * For other futexes, it points to ¤t->mm->mmap_sem and + * caller must have taken the reader lock. but NOT any spinlocks. */ -int get_futex_key(u32 __user *uaddr, union futex_key *key) +int get_futex_key(u32 __user *uaddr, struct rw_semaphore *fshared, + union futex_key *key) { unsigned long address = (unsigned long)uaddr; struct mm_struct *mm = current->mm; @@ -162,11 +184,25 @@ int get_futex_key(u32 __user *uaddr, union futex_key *key) * The futex address must be "naturally" aligned. */ key->both.offset = address % PAGE_SIZE; - if (unlikely((key->both.offset % sizeof(u32)) != 0)) + if (unlikely((address % sizeof(u32)) != 0)) return -EINVAL; address -= key->both.offset; /* + * PROCESS_PRIVATE futexes are fast. + * As the mm cannot disappear under us and the 'key' only needs + * virtual address, we dont even have to find the underlying vma. + * Note : We do have to check 'uaddr' is a valid user address, + * but access_ok() should be faster than find_vma() + */ + if (!fshared) { + if (unlikely(!access_ok(VERIFY_WRITE, uaddr, sizeof(u32)))) + return -EFAULT; + key->private.mm = mm; + key->private.address = address; + return 0; + } + /* * The futex is hashed differently depending on whether * it's in a shared or private mapping. So check vma first. */ @@ -180,6 +216,9 @@ int get_futex_key(u32 __user *uaddr, union futex_key *key) if (unlikely((vma->vm_flags & (VM_IO|VM_READ)) != VM_READ)) return (vma->vm_flags & VM_IO) ? -EPERM : -EACCES; + /* Save the user address in the ley */ + key->uaddr = uaddr; + /* * Private mappings are handled in a simple way. * @@ -190,6 +229,7 @@ int get_futex_key(u32 __user *uaddr, union futex_key *key) * mappings of _writable_ handles. */ if (likely(!(vma->vm_flags & VM_MAYSHARE))) { + key->both.offset |= FUT_OFF_MMSHARED; /* reference taken on mm */ key->private.mm = mm; key->private.address = address; return 0; @@ -199,7 +239,7 @@ int get_futex_key(u32 __user *uaddr, union futex_key *key) * Linear file mappings are also simple. */ key->shared.inode = vma->vm_file->f_path.dentry->d_inode; - key->both.offset++; /* Bit 0 of offset indicates inode-based key. */ + key->both.offset |= FUT_OFF_INODE; /* inode-based key. */ if (likely(!(vma->vm_flags & VM_NONLINEAR))) { key->shared.pgoff = (((address - vma->vm_start) >> PAGE_SHIFT) + vma->vm_pgoff); @@ -227,16 +267,18 @@ EXPORT_SYMBOL_GPL(get_futex_key); * Take a reference to the resource addressed by a key. * Can be called while holding spinlocks. * - * NOTE: mmap_sem MUST be held between get_futex_key() and calling this - * function, if it is called at all. mmap_sem keeps key->shared.inode valid. */ inline void get_futex_key_refs(union futex_key *key) { - if (key->both.ptr != 0) { - if (key->both.offset & 1) + if (key->both.ptr == 0) + return; + switch (key->both.offset & (FUT_OFF_INODE|FUT_OFF_MMSHARED)) { + case FUT_OFF_INODE: atomic_inc(&key->shared.inode->i_count); - else + break; + case FUT_OFF_MMSHARED: atomic_inc(&key->private.mm->mm_count); + break; } } EXPORT_SYMBOL_GPL(get_futex_key_refs); @@ -247,11 +289,15 @@ EXPORT_SYMBOL_GPL(get_futex_key_refs); */ void drop_futex_key_refs(union futex_key *key) { - if (key->both.ptr != 0) { - if (key->both.offset & 1) + if (key->both.ptr == 0) + return; + switch (key->both.offset & (FUT_OFF_INODE|FUT_OFF_MMSHARED)) { + case FUT_OFF_INODE: iput(key->shared.inode); - else + break; + case FUT_OFF_MMSHARED: mmdrop(key->private.mm); + break; } } EXPORT_SYMBOL_GPL(drop_futex_key_refs); @@ -268,28 +314,38 @@ static inline int get_futex_value_locked(u32 *dest, u32 __user *from) } /* - * Fault handling. Called with current->mm->mmap_sem held. + * Fault handling. + * if fshared is non NULL, current->mm->mmap_sem is already held */ -static int futex_handle_fault(unsigned long address, int attempt) +static int futex_handle_fault(unsigned long address, + struct rw_semaphore *fshared, int attempt) { struct vm_area_struct * vma; struct mm_struct *mm = current->mm; + int ret = -EFAULT; - if (attempt > 2 || !(vma = find_vma(mm, address)) || - vma->vm_start > address || !(vma->vm_flags & VM_WRITE)) - return -EFAULT; + if (attempt > 2) + return ret; - switch (handle_mm_fault(mm, vma, address, 1)) { - case VM_FAULT_MINOR: - current->min_flt++; - break; - case VM_FAULT_MAJOR: - current->maj_flt++; - break; - default: - return -EFAULT; + if (!fshared) + down_read(&mm->mmap_sem); + vma = find_vma(mm, address); + if (vma && address >= vma->vm_start && + (vma->vm_flags & VM_WRITE)) { + switch (handle_mm_fault(mm, vma, address, 1)) { + case VM_FAULT_MINOR: + ret = 0; + current->min_flt++; + break; + case VM_FAULT_MAJOR: + ret = 0; + current->maj_flt++; + break; + } } - return 0; + if (!fshared) + up_read(&mm->mmap_sem); + return ret; } /* @@ -439,18 +495,19 @@ void exit_pi_state_list(struct task_struct *curr) } static int -lookup_pi_state(u32 uval, struct futex_hash_bucket *hb, struct futex_q *me) +lookup_pi_state(u32 uval, struct futex_hash_bucket *hb, + union futex_key *key, struct futex_pi_state **ps) { struct futex_pi_state *pi_state = NULL; struct futex_q *this, *next; - struct list_head *head; + struct plist_head *head; struct task_struct *p; pid_t pid; head = &hb->chain; - list_for_each_entry_safe(this, next, head, list) { - if (match_futex(&this->key, &me->key)) { + plist_for_each_entry_safe(this, next, head, list) { + if (match_futex(&this->key, key)) { /* * Another waiter already exists - bump up * the refcount and return its pi_state: @@ -465,7 +522,7 @@ lookup_pi_state(u32 uval, struct futex_hash_bucket *hb, struct futex_q *me) WARN_ON(!atomic_read(&pi_state->refcount)); atomic_inc(&pi_state->refcount); - me->pi_state = pi_state; + *ps = pi_state; return 0; } @@ -492,7 +549,7 @@ lookup_pi_state(u32 uval, struct futex_hash_bucket *hb, struct futex_q *me) rt_mutex_init_proxy_locked(&pi_state->pi_mutex, p); /* Store the key for possible exit cleanups: */ - pi_state->key = me->key; + pi_state->key = *key; spin_lock_irq(&p->pi_lock); WARN_ON(!list_empty(&pi_state->list)); @@ -502,7 +559,7 @@ lookup_pi_state(u32 uval, struct futex_hash_bucket *hb, struct futex_q *me) put_task_struct(p); - me->pi_state = pi_state; + *ps = pi_state; return 0; } @@ -513,12 +570,12 @@ lookup_pi_state(u32 uval, struct futex_hash_bucket *hb, struct futex_q *me) */ static void wake_futex(struct futex_q *q) { - list_del_init(&q->list); + plist_del(&q->list, &q->list.plist); if (q->filp) send_sigio(&q->filp->f_owner, q->fd, POLL_IN); /* * The lock in wake_up_all() is a crucial memory barrier after the - * list_del_init() and also before assigning to q->lock_ptr. + * plist_del() and also before assigning to q->lock_ptr. */ wake_up_all(&q->waiters); /* @@ -562,6 +619,8 @@ static int wake_futex_pi(u32 __user *uaddr, u32 uval, struct futex_q *this) */ if (!(uval & FUTEX_OWNER_DIED)) { newval = FUTEX_WAITERS | new_owner->pid; + /* Keep the FUTEX_WAITER_REQUEUED flag if it was set */ + newval |= (uval & FUTEX_WAITER_REQUEUED); pagefault_disable(); curval = futex_atomic_cmpxchg_inatomic(uaddr, uval, newval); @@ -629,17 +688,19 @@ double_lock_hb(struct futex_hash_bucket *hb1, struct futex_hash_bucket *hb2) * Wake up all waiters hashed on the physical page that is mapped * to this virtual address: */ -static int futex_wake(u32 __user *uaddr, int nr_wake) +static int futex_wake(u32 __user *uaddr, struct rw_semaphore *fshared, + int nr_wake) { struct futex_hash_bucket *hb; struct futex_q *this, *next; - struct list_head *head; + struct plist_head *head; union futex_key key; int ret; - down_read(¤t->mm->mmap_sem); + if (fshared) + down_read(fshared); - ret = get_futex_key(uaddr, &key); + ret = get_futex_key(uaddr, fshared, &key); if (unlikely(ret != 0)) goto out; @@ -647,7 +708,7 @@ static int futex_wake(u32 __user *uaddr, int nr_wake) spin_lock(&hb->lock); head = &hb->chain; - list_for_each_entry_safe(this, next, head, list) { + plist_for_each_entry_safe(this, next, head, list) { if (match_futex (&this->key, &key)) { if (this->pi_state) { ret = -EINVAL; @@ -661,7 +722,261 @@ static int futex_wake(u32 __user *uaddr, int nr_wake) spin_unlock(&hb->lock); out: - up_read(¤t->mm->mmap_sem); + if (fshared) + up_read(fshared); + return ret; +} + +/* + * Called from futex_requeue_pi. + * Set FUTEX_WAITERS and FUTEX_WAITER_REQUEUED flags on the + * PI-futex value; search its associated pi_state if an owner exist + * or create a new one without owner. + */ +static inline int +lookup_pi_state_for_requeue(u32 __user *uaddr, struct futex_hash_bucket *hb, + union futex_key *key, + struct futex_pi_state **pi_state) +{ + u32 curval, uval, newval; + +retry: + /* + * We can't handle a fault cleanly because we can't + * release the locks here. Simply return the fault. + */ + if (get_futex_value_locked(&curval, uaddr)) + return -EFAULT; + + /* set the flags FUTEX_WAITERS and FUTEX_WAITER_REQUEUED */ + if ((curval & (FUTEX_WAITERS | FUTEX_WAITER_REQUEUED)) + != (FUTEX_WAITERS | FUTEX_WAITER_REQUEUED)) { + /* + * No waiters yet, we prepare the futex to have some waiters. + */ + + uval = curval; + newval = uval | FUTEX_WAITERS | FUTEX_WAITER_REQUEUED; + + pagefault_disable(); + curval = futex_atomic_cmpxchg_inatomic(uaddr, uval, newval); + pagefault_enable(); + + if (unlikely(curval == -EFAULT)) + return -EFAULT; + if (unlikely(curval != uval)) + goto retry; + } + + if (!(curval & FUTEX_TID_MASK) + || lookup_pi_state(curval, hb, key, pi_state)) { + /* the futex has no owner (yet) or the lookup failed: + allocate one pi_state without owner */ + + *pi_state = alloc_pi_state(); + + /* Already stores the key: */ + (*pi_state)->key = *key; + + /* init the mutex without owner */ + __rt_mutex_init(&(*pi_state)->pi_mutex, NULL); + } + + return 0; +} + +/* + * Keep the first nr_wake waiter from futex1, wake up one, + * and requeue the next nr_requeue waiters following hashed on + * one physical page to another physical page (PI-futex uaddr2) + */ +static int futex_requeue_pi(u32 __user *uaddr1, + struct rw_semaphore *fshared, + u32 __user *uaddr2, + int nr_wake, int nr_requeue, u32 *cmpval) +{ + union futex_key key1, key2; + struct futex_hash_bucket *hb1, *hb2; + struct plist_head *head1; + struct futex_q *this, *next; + struct futex_pi_state *pi_state2 = NULL; + struct rt_mutex_waiter *waiter, *top_waiter = NULL; + struct rt_mutex *lock2 = NULL; + int ret, drop_count = 0; + + if (refill_pi_state_cache()) + return -ENOMEM; + +retry: + /* + * First take all the futex related locks: + */ + if (fshared) + down_read(fshared); + + ret = get_futex_key(uaddr1, fshared, &key1); + if (unlikely(ret != 0)) + goto out; + ret = get_futex_key(uaddr2, fshared, &key2); + if (unlikely(ret != 0)) + goto out; + + hb1 = hash_futex(&key1); + hb2 = hash_futex(&key2); + + double_lock_hb(hb1, hb2); + + if (likely(cmpval != NULL)) { + u32 curval; + + ret = get_futex_value_locked(&curval, uaddr1); + + if (unlikely(ret)) { + spin_unlock(&hb1->lock); + if (hb1 != hb2) + spin_unlock(&hb2->lock); + + /* + * If we would have faulted, release mmap_sem, fault + * it in and start all over again. + */ + if (fshared) + up_read(fshared); + + ret = get_user(curval, uaddr1); + + if (!ret) + goto retry; + + return ret; + } + if (curval != *cmpval) { + ret = -EAGAIN; + goto out_unlock; + } + } + + head1 = &hb1->chain; + plist_for_each_entry_safe(this, next, head1, list) { + if (!match_futex (&this->key, &key1)) + continue; + if (++ret <= nr_wake) { + wake_futex(this); + } else { + /* + * FIRST: get and set the pi_state + */ + if (!pi_state2) { + int s; + /* do this only the first time we requeue someone */ + s = lookup_pi_state_for_requeue(uaddr2, hb2, + &key2, &pi_state2); + if (s) { + ret = s; + goto out_unlock; + } + + lock2 = &pi_state2->pi_mutex; + spin_lock(&lock2->wait_lock); + + /* Save the top waiter of the wait_list */ + if (rt_mutex_has_waiters(lock2)) + top_waiter = rt_mutex_top_waiter(lock2); + } else + atomic_inc(&pi_state2->refcount); + + + this->pi_state = pi_state2; + + /* + * SECOND: requeue futex_q to the correct hashbucket + */ + + /* + * If key1 and key2 hash to the same bucket, no need to + * requeue. + */ + if (likely(head1 != &hb2->chain)) { + plist_del(&this->list, &hb1->chain); + plist_add(&this->list, &hb2->chain); + this->lock_ptr = &hb2->lock; +#ifdef CONFIG_DEBUG_PI_LIST + this->list.plist.lock = &hb2->lock; +#endif + } + this->key = key2; + get_futex_key_refs(&key2); + drop_count++; + + + /* + * THIRD: queue it to lock2 + */ + spin_lock_irq(&this->task->pi_lock); + waiter = &this->waiter; + waiter->task = this->task; + waiter->lock = lock2; + plist_node_init(&waiter->list_entry, this->task->prio); + plist_node_init(&waiter->pi_list_entry, this->task->prio); + plist_add(&waiter->list_entry, &lock2->wait_list); + this->task->pi_blocked_on = waiter; + spin_unlock_irq(&this->task->pi_lock); + + if (ret - nr_wake >= nr_requeue) + break; + } + } + + /* If we've requeued some tasks and the top_waiter of the rt_mutex + has changed, we must adjust the priority of the owner, if any */ + if (drop_count) { + struct task_struct *owner = rt_mutex_owner(lock2); + if (owner && + (top_waiter != (waiter = rt_mutex_top_waiter(lock2)))) { + int chain_walk = 0; + + spin_lock_irq(&owner->pi_lock); + if (top_waiter) + plist_del(&top_waiter->pi_list_entry, &owner->pi_waiters); + else + /* + * There was no waiters before the requeue, + * the flag must be updated + */ + mark_rt_mutex_waiters(lock2); + + plist_add(&waiter->pi_list_entry, &owner->pi_waiters); + __rt_mutex_adjust_prio(owner); + if (owner->pi_blocked_on) { + chain_walk = 1; + get_task_struct(owner); + } + + spin_unlock_irq(&owner->pi_lock); + spin_unlock(&lock2->wait_lock); + + if (chain_walk) + rt_mutex_adjust_prio_chain(owner, 0, lock2, NULL, + current); + } else { + /* No owner or the top_waiter does not change */ + mark_rt_mutex_waiters(lock2); + spin_unlock(&lock2->wait_lock); + } + } + +out_unlock: + spin_unlock(&hb1->lock); + if (hb1 != hb2) + spin_unlock(&hb2->lock); + + /* drop_futex_key_refs() must be called outside the spinlocks. */ + while (--drop_count >= 0) + drop_futex_key_refs(&key1); + +out: + if (fshared) + up_read(fshared); return ret; } @@ -670,22 +985,24 @@ out: * to this virtual address: */ static int -futex_wake_op(u32 __user *uaddr1, u32 __user *uaddr2, +futex_wake_op(u32 __user *uaddr1, struct rw_semaphore *fshared, + u32 __user *uaddr2, int nr_wake, int nr_wake2, int op) { union futex_key key1, key2; struct futex_hash_bucket *hb1, *hb2; - struct list_head *head; + struct plist_head *head; struct futex_q *this, *next; int ret, op_ret, attempt = 0; retryfull: - down_read(¤t->mm->mmap_sem); + if (fshared) + down_read(fshared); - ret = get_futex_key(uaddr1, &key1); + ret = get_futex_key(uaddr1, fshared, &key1); if (unlikely(ret != 0)) goto out; - ret = get_futex_key(uaddr2, &key2); + ret = get_futex_key(uaddr2, fshared, &key2); if (unlikely(ret != 0)) goto out; @@ -725,11 +1042,10 @@ retry: * still holding the mmap_sem. */ if (attempt++) { - if (futex_handle_fault((unsigned long)uaddr2, - attempt)) { - ret = -EFAULT; + ret = futex_handle_fault((unsigned long)uaddr2, + fshared, attempt); + if (ret) goto out; - } goto retry; } @@ -737,7 +1053,8 @@ retry: * If we would have faulted, release mmap_sem, * fault it in and start all over again. */ - up_read(¤t->mm->mmap_sem); + if (fshared) + up_read(fshared); ret = get_user(dummy, uaddr2); if (ret) @@ -748,7 +1065,7 @@ retry: head = &hb1->chain; - list_for_each_entry_safe(this, next, head, list) { + plist_for_each_entry_safe(this, next, head, list) { if (match_futex (&this->key, &key1)) { wake_futex(this); if (++ret >= nr_wake) @@ -760,7 +1077,7 @@ retry: head = &hb2->chain; op_ret = 0; - list_for_each_entry_safe(this, next, head, list) { + plist_for_each_entry_safe(this, next, head, list) { if (match_futex (&this->key, &key2)) { wake_futex(this); if (++op_ret >= nr_wake2) @@ -774,7 +1091,8 @@ retry: if (hb1 != hb2) spin_unlock(&hb2->lock); out: - up_read(¤t->mm->mmap_sem); + if (fshared) + up_read(fshared); return ret; } @@ -782,22 +1100,24 @@ out: * Requeue all waiters hashed on one physical page to another * physical page. */ -static int futex_requeue(u32 __user *uaddr1, u32 __user *uaddr2, +static int futex_requeue(u32 __user *uaddr1, struct rw_semaphore *fshared, + u32 __user *uaddr2, int nr_wake, int nr_requeue, u32 *cmpval) { union futex_key key1, key2; struct futex_hash_bucket *hb1, *hb2; - struct list_head *head1; + struct plist_head *head1; struct futex_q *this, *next; int ret, drop_count = 0; retry: - down_read(¤t->mm->mmap_sem); + if (fshared) + down_read(fshared); - ret = get_futex_key(uaddr1, &key1); + ret = get_futex_key(uaddr1, fshared, &key1); if (unlikely(ret != 0)) goto out; - ret = get_futex_key(uaddr2, &key2); + ret = get_futex_key(uaddr2, fshared, &key2); if (unlikely(ret != 0)) goto out; @@ -820,7 +1140,8 @@ static int futex_requeue(u32 __user *uaddr1, u32 __user *uaddr2, * If we would have faulted, release mmap_sem, fault * it in and start all over again. */ - up_read(¤t->mm->mmap_sem); + if (fshared) + up_read(fshared); ret = get_user(curval, uaddr1); @@ -836,7 +1157,7 @@ static int futex_requeue(u32 __user *uaddr1, u32 __user *uaddr2, } head1 = &hb1->chain; - list_for_each_entry_safe(this, next, head1, list) { + plist_for_each_entry_safe(this, next, head1, list) { if (!match_futex (&this->key, &key1)) continue; if (++ret <= nr_wake) { @@ -847,9 +1168,13 @@ static int futex_requeue(u32 __user *uaddr1, u32 __user *uaddr2, * requeue. */ if (likely(head1 != &hb2->chain)) { - list_move_tail(&this->list, &hb2->chain); + plist_del(&this->list, &hb1->chain); + plist_add(&this->list, &hb2->chain); this->lock_ptr = &hb2->lock; - } +#ifdef CONFIG_DEBUG_PI_LIST + this->list.plist.lock = &hb2->lock; +#endif + } this->key = key2; get_futex_key_refs(&key2); drop_count++; @@ -869,7 +1194,8 @@ out_unlock: drop_futex_key_refs(&key1); out: - up_read(¤t->mm->mmap_sem); + if (fshared) + up_read(fshared); return ret; } @@ -894,7 +1220,23 @@ queue_lock(struct futex_q *q, int fd, struct file *filp) static inline void __queue_me(struct futex_q *q, struct futex_hash_bucket *hb) { - list_add_tail(&q->list, &hb->chain); + int prio; + + /* + * The priority used to register this element is + * - either the real thread-priority for the real-time threads + * (i.e. threads with a priority lower than MAX_RT_PRIO) + * - or MAX_RT_PRIO for non-RT threads. + * Thus, all RT-threads are woken first in priority order, and + * the others are woken last, in FIFO order. + */ + prio = min(current->normal_prio, MAX_RT_PRIO); + + plist_node_init(&q->list, prio); +#ifdef CONFIG_DEBUG_PI_LIST + q->list.plist.lock = &hb->lock; +#endif + plist_add(&q->list, &hb->chain); q->task = current; spin_unlock(&hb->lock); } @@ -949,8 +1291,8 @@ static int unqueue_me(struct futex_q *q) spin_unlock(lock_ptr); goto retry; } - WARN_ON(list_empty(&q->list)); - list_del(&q->list); + WARN_ON(plist_node_empty(&q->list)); + plist_del(&q->list, &q->list.plist); BUG_ON(q->pi_state); @@ -964,39 +1306,104 @@ static int unqueue_me(struct futex_q *q) /* * PI futexes can not be requeued and must remove themself from the - * hash bucket. The hash bucket lock is held on entry and dropped here. + * hash bucket. The hash bucket lock (i.e. lock_ptr) is held on entry + * and dropped here. */ -static void unqueue_me_pi(struct futex_q *q, struct futex_hash_bucket *hb) +static void unqueue_me_pi(struct futex_q *q) { - WARN_ON(list_empty(&q->list)); - list_del(&q->list); + WARN_ON(plist_node_empty(&q->list)); + plist_del(&q->list, &q->list.plist); BUG_ON(!q->pi_state); free_pi_state(q->pi_state); q->pi_state = NULL; - spin_unlock(&hb->lock); + spin_unlock(q->lock_ptr); drop_futex_key_refs(&q->key); } +/* + * Fixup the pi_state owner with current. + * + * The cur->mm semaphore must be held, it is released at return of this + * function. + */ +static int fixup_pi_state_owner(u32 __user *uaddr, struct rw_semaphore *fshared, + struct futex_q *q, + struct futex_hash_bucket *hb, + struct task_struct *curr) +{ + u32 newtid = curr->pid | FUTEX_WAITERS; + struct futex_pi_state *pi_state = q->pi_state; + u32 uval, curval, newval; + int ret; + + /* Owner died? */ + if (pi_state->owner != NULL) { + spin_lock_irq(&pi_state->owner->pi_lock); + WARN_ON(list_empty(&pi_state->list)); + list_del_init(&pi_state->list); + spin_unlock_irq(&pi_state->owner->pi_lock); + } else + newtid |= FUTEX_OWNER_DIED; + + pi_state->owner = curr; + + spin_lock_irq(&curr->pi_lock); + WARN_ON(!list_empty(&pi_state->list)); + list_add(&pi_state->list, &curr->pi_state_list); + spin_unlock_irq(&curr->pi_lock); + + /* Unqueue and drop the lock */ + unqueue_me_pi(q); + if (fshared) + up_read(fshared); + /* + * We own it, so we have to replace the pending owner + * TID. This must be atomic as we have preserve the + * owner died bit here. + */ + ret = get_user(uval, uaddr); + while (!ret) { + newval = (uval & FUTEX_OWNER_DIED) | newtid; + newval |= (uval & FUTEX_WAITER_REQUEUED); + curval = futex_atomic_cmpxchg_inatomic(uaddr, + uval, newval); + if (curval == -EFAULT) + ret = -EFAULT; + if (curval == uval) + break; + uval = curval; + } + return ret; +} + +/* + * In case we must use restart_block to restart a futex_wait, + * we encode in the 'arg3' shared capability + */ +#define ARG3_SHARED 1 + static long futex_wait_restart(struct restart_block *restart); -static int futex_wait_abstime(u32 __user *uaddr, u32 val, - int timed, unsigned long abs_time) +static int futex_wait(u32 __user *uaddr, struct rw_semaphore *fshared, + u32 val, ktime_t *abs_time) { struct task_struct *curr = current; DECLARE_WAITQUEUE(wait, curr); struct futex_hash_bucket *hb; struct futex_q q; - unsigned long time_left = 0; u32 uval; int ret; + struct hrtimer_sleeper t, *to = NULL; + int rem = 0; q.pi_state = NULL; retry: - down_read(&curr->mm->mmap_sem); + if (fshared) + down_read(fshared); - ret = get_futex_key(uaddr, &q.key); + ret = get_futex_key(uaddr, fshared, &q.key); if (unlikely(ret != 0)) goto out_release_sem; @@ -1019,8 +1426,8 @@ static int futex_wait_abstime(u32 __user *uaddr, u32 val, * a wakeup when *uaddr != val on entry to the syscall. This is * rare, but normal. * - * We hold the mmap semaphore, so the mapping cannot have changed - * since we looked it up in get_futex_key. + * for shared futexes, we hold the mmap semaphore, so the mapping + * cannot have changed since we looked it up in get_futex_key. */ ret = get_futex_value_locked(&uval, uaddr); @@ -1031,7 +1438,8 @@ static int futex_wait_abstime(u32 __user *uaddr, u32 val, * If we would have faulted, release mmap_sem, fault it in and * start all over again. */ - up_read(&curr->mm->mmap_sem); + if (fshared) + up_read(fshared); ret = get_user(uval, uaddr); @@ -1043,6 +1451,14 @@ static int futex_wait_abstime(u32 __user *uaddr, u32 val, if (uval != val) goto out_unlock_release_sem; + /* + * This rt_mutex_waiter structure is prepared here and will + * be used only if this task is requeued from a normal futex to + * a PI-futex with futex_requeue_pi. + */ + debug_rt_mutex_init_waiter(&q.waiter); + q.waiter.task = NULL; + /* Only actually queue if *uaddr contained val. */ __queue_me(&q, hb); @@ -1050,7 +1466,8 @@ static int futex_wait_abstime(u32 __user *uaddr, u32 val, * Now the futex is queued and we have checked the data, we * don't want to hold mmap_sem while we sleep. */ - up_read(&curr->mm->mmap_sem); + if (fshared) + up_read(fshared); /* * There might have been scheduling since the queue_me(), as we @@ -1065,23 +1482,33 @@ static int futex_wait_abstime(u32 __user *uaddr, u32 val, __set_current_state(TASK_INTERRUPTIBLE); add_wait_queue(&q.waiters, &wait); /* - * !list_empty() is safe here without any lock. + * !plist_node_empty() is safe here without any lock. * q.lock_ptr != 0 is not safe, because of ordering against wakeup. */ - time_left = 0; - if (likely(!list_empty(&q.list))) { - unsigned long rel_time; - - if (timed) { - unsigned long now = jiffies; - if (time_after(now, abs_time)) - rel_time = 0; - else - rel_time = abs_time - now; - } else - rel_time = MAX_SCHEDULE_TIMEOUT; + if (likely(!plist_node_empty(&q.list))) { + if (!abs_time) + schedule(); + else { + to = &t; + hrtimer_init(&t.timer, CLOCK_MONOTONIC, HRTIMER_MODE_ABS); + hrtimer_init_sleeper(&t, current); + t.timer.expires = *abs_time; - time_left = schedule_timeout(rel_time); + hrtimer_start(&t.timer, t.timer.expires, HRTIMER_MODE_ABS); + + /* + * the timer could have already expired, in which + * case current would be flagged for rescheduling. + * Don't bother calling schedule. + */ + if (likely(t.task)) + schedule(); + + hrtimer_cancel(&t.timer); + + /* Flag if a timeout occured */ + rem = (t.task == NULL); + } } __set_current_state(TASK_RUNNING); @@ -1090,17 +1517,80 @@ static int futex_wait_abstime(u32 __user *uaddr, u32 val, * we are the only user of it. */ + if (q.pi_state) { + /* + * We were woken but have been requeued on a PI-futex. + * We have to complete the lock acquisition by taking + * the rtmutex. + */ + + struct rt_mutex *lock = &q.pi_state->pi_mutex; + + spin_lock(&lock->wait_lock); + if (unlikely(q.waiter.task)) { + remove_waiter(lock, &q.waiter); + } + spin_unlock(&lock->wait_lock); + + if (rem) + ret = -ETIMEDOUT; + else + ret = rt_mutex_timed_lock(lock, to, 1); + + if (fshared) + down_read(fshared); + spin_lock(q.lock_ptr); + + /* + * Got the lock. We might not be the anticipated owner if we + * did a lock-steal - fix up the PI-state in that case. + */ + if (!ret && q.pi_state->owner != curr) { + /* + * We MUST play with the futex we were requeued on, + * NOT the current futex. + * We can retrieve it from the key of the pi_state + */ + uaddr = q.pi_state->key.uaddr; + + /* mmap_sem and hash_bucket lock are unlocked at + return of this function */ + ret = fixup_pi_state_owner(uaddr, fshared, + &q, hb, curr); + } else { + /* + * Catch the rare case, where the lock was released + * when we were on the way back before we locked + * the hash bucket. + */ + if (ret && q.pi_state->owner == curr) { + if (rt_mutex_trylock(&q.pi_state->pi_mutex)) + ret = 0; + } + /* Unqueue and drop the lock */ + unqueue_me_pi(&q); + if (fshared) + up_read(fshared); + } + + debug_rt_mutex_free_waiter(&q.waiter); + + return ret; + } + + debug_rt_mutex_free_waiter(&q.waiter); + /* If we were woken (and unqueued), we succeeded, whatever. */ if (!unqueue_me(&q)) return 0; - if (time_left == 0) + if (rem) return -ETIMEDOUT; /* * We expect signal_pending(current), but another thread may * have handled it for us already. */ - if (time_left == MAX_SCHEDULE_TIMEOUT) + if (!abs_time) return -ERESTARTSYS; else { struct restart_block *restart; @@ -1108,8 +1598,10 @@ static int futex_wait_abstime(u32 __user *uaddr, u32 val, restart->fn = futex_wait_restart; restart->arg0 = (unsigned long)uaddr; restart->arg1 = (unsigned long)val; - restart->arg2 = (unsigned long)timed; - restart->arg3 = abs_time; + restart->arg2 = (unsigned long)abs_time; + restart->arg3 = 0; + if (fshared) + restart->arg3 |= ARG3_SHARED; return -ERESTART_RESTARTBLOCK; } @@ -1117,65 +1609,111 @@ static int futex_wait_abstime(u32 __user *uaddr, u32 val, queue_unlock(&q, hb); out_release_sem: - up_read(&curr->mm->mmap_sem); + if (fshared) + up_read(fshared); return ret; } -static int futex_wait(u32 __user *uaddr, u32 val, unsigned long rel_time) -{ - int timed = (rel_time != MAX_SCHEDULE_TIMEOUT); - return futex_wait_abstime(uaddr, val, timed, jiffies+rel_time); -} static long futex_wait_restart(struct restart_block *restart) { u32 __user *uaddr = (u32 __user *)restart->arg0; u32 val = (u32)restart->arg1; - int timed = (int)restart->arg2; - unsigned long abs_time = restart->arg3; + ktime_t *abs_time = (ktime_t *)restart->arg2; + struct rw_semaphore *fshared = NULL; restart->fn = do_no_restart_syscall; - return (long)futex_wait_abstime(uaddr, val, timed, abs_time); + if (restart->arg3 & ARG3_SHARED) + fshared = ¤t->mm->mmap_sem; + return (long)futex_wait(uaddr, fshared, val, abs_time); } +static void set_pi_futex_owner(struct futex_hash_bucket *hb, + union futex_key *key, struct task_struct *p) +{ + struct plist_head *head; + struct futex_q *this, *next; + struct futex_pi_state *pi_state = NULL; + struct rt_mutex *lock; + + /* Search a waiter that should already exists */ + + head = &hb->chain; + + plist_for_each_entry_safe(this, next, head, list) { + if (match_futex (&this->key, key)) { + pi_state = this->pi_state; + break; + } + } + + BUG_ON(!pi_state); + + /* set p as pi_state's owner */ + lock = &pi_state->pi_mutex; + + spin_lock(&lock->wait_lock); + spin_lock_irq(&p->pi_lock); + + list_add(&pi_state->list, &p->pi_state_list); + pi_state->owner = p; + + + /* set p as pi_mutex's owner */ + debug_rt_mutex_proxy_lock(lock, p); + WARN_ON(rt_mutex_owner(lock)); + rt_mutex_set_owner(lock, p, 0); + rt_mutex_deadlock_account_lock(lock, p); + + plist_add(&rt_mutex_top_waiter(lock)->pi_list_entry, + &p->pi_waiters); + __rt_mutex_adjust_prio(p); + + spin_unlock_irq(&p->pi_lock); + spin_unlock(&lock->wait_lock); +} + /* * Userspace tried a 0 -> TID atomic transition of the futex value * and failed. The kernel side here does the whole locking operation: * if there are waiters then it will block, it does PI, etc. (Due to * races the kernel might see a 0 value of the futex too.) */ -static int futex_lock_pi(u32 __user *uaddr, int detect, unsigned long sec, - long nsec, int trylock) +static int futex_lock_pi(u32 __user *uaddr, struct rw_semaphore *fshared, + int detect, ktime_t *time, int trylock) { struct hrtimer_sleeper timeout, *to = NULL; struct task_struct *curr = current; struct futex_hash_bucket *hb; u32 uval, newval, curval; struct futex_q q; - int ret, attempt = 0; + int ret, lock_held, attempt = 0; if (refill_pi_state_cache()) return -ENOMEM; - if (sec != MAX_SCHEDULE_TIMEOUT) { + if (time) { to = &timeout; hrtimer_init(&to->timer, CLOCK_REALTIME, HRTIMER_MODE_ABS); hrtimer_init_sleeper(to, current); - to->timer.expires = ktime_set(sec, nsec); + to->timer.expires = *time; } q.pi_state = NULL; retry: - down_read(&curr->mm->mmap_sem); + if (fshared) + down_read(fshared); - ret = get_futex_key(uaddr, &q.key); + ret = get_futex_key(uaddr, fshared, &q.key); if (unlikely(ret != 0)) goto out_release_sem; hb = queue_lock(&q, -1, NULL); retry_locked: + lock_held = 0; + /* * To avoid races, we attempt to take the lock here again * (by doing a 0 -> TID atomic cmpxchg), while holding all @@ -1194,7 +1732,16 @@ static int futex_lock_pi(u32 __user *uaddr, int detect, unsigned long sec, if (unlikely((curval & FUTEX_TID_MASK) == current->pid)) { if (!detect && 0) force_sig(SIGKILL, current); - ret = -EDEADLK; + /* + * Normally, this check is done in user space. + * In case of requeue, the owner may attempt to lock this futex, + * even if the ownership has already been given by the previous + * waker. + * In the usual case, this is a case of deadlock, but not in case + * of REQUEUE_PI. + */ + if (!(curval & FUTEX_WAITER_REQUEUED)) + ret = -EDEADLK; goto out_unlock_release_sem; } @@ -1206,7 +1753,18 @@ static int futex_lock_pi(u32 __user *uaddr, int detect, unsigned long sec, goto out_unlock_release_sem; uval = curval; - newval = uval | FUTEX_WAITERS; + /* + * In case of a requeue, check if there already is an owner + * If not, just take the futex. + */ + if ((curval & FUTEX_WAITER_REQUEUED) && !(curval & FUTEX_TID_MASK)) { + /* set current as futex owner */ + newval = curval | current->pid; + lock_held = 1; + } else + /* Set the WAITERS flag, so the owner will know it has someone + to wake at next unlock */ + newval = curval | FUTEX_WAITERS; pagefault_disable(); curval = futex_atomic_cmpxchg_inatomic(uaddr, uval, newval); @@ -1217,11 +1775,16 @@ static int futex_lock_pi(u32 __user *uaddr, int detect, unsigned long sec, if (unlikely(curval != uval)) goto retry_locked; + if (lock_held) { + set_pi_futex_owner(hb, &q.key, curr); + goto out_unlock_release_sem; + } + /* * We dont have the lock. Look up the PI state (or create it if * we are the first waiter): */ - ret = lookup_pi_state(uval, hb, &q); + ret = lookup_pi_state(uval, hb, &q.key, &q.pi_state); if (unlikely(ret)) { /* @@ -1263,7 +1826,8 @@ static int futex_lock_pi(u32 __user *uaddr, int detect, unsigned long sec, * Now the futex is queued and we have checked the data, we * don't want to hold mmap_sem while we sleep. */ - up_read(&curr->mm->mmap_sem); + if (fshared) + up_read(fshared); WARN_ON(!q.pi_state); /* @@ -1277,52 +1841,18 @@ static int futex_lock_pi(u32 __user *uaddr, int detect, unsigned long sec, ret = ret ? 0 : -EWOULDBLOCK; } - down_read(&curr->mm->mmap_sem); + if (fshared) + down_read(fshared); spin_lock(q.lock_ptr); /* * Got the lock. We might not be the anticipated owner if we * did a lock-steal - fix up the PI-state in that case. */ - if (!ret && q.pi_state->owner != curr) { - u32 newtid = current->pid | FUTEX_WAITERS; - - /* Owner died? */ - if (q.pi_state->owner != NULL) { - spin_lock_irq(&q.pi_state->owner->pi_lock); - WARN_ON(list_empty(&q.pi_state->list)); - list_del_init(&q.pi_state->list); - spin_unlock_irq(&q.pi_state->owner->pi_lock); - } else - newtid |= FUTEX_OWNER_DIED; - - q.pi_state->owner = current; - - spin_lock_irq(¤t->pi_lock); - WARN_ON(!list_empty(&q.pi_state->list)); - list_add(&q.pi_state->list, ¤t->pi_state_list); - spin_unlock_irq(¤t->pi_lock); - - /* Unqueue and drop the lock */ - unqueue_me_pi(&q, hb); - up_read(&curr->mm->mmap_sem); - /* - * We own it, so we have to replace the pending owner - * TID. This must be atomic as we have preserve the - * owner died bit here. - */ - ret = get_user(uval, uaddr); - while (!ret) { - newval = (uval & FUTEX_OWNER_DIED) | newtid; - curval = futex_atomic_cmpxchg_inatomic(uaddr, - uval, newval); - if (curval == -EFAULT) - ret = -EFAULT; - if (curval == uval) - break; - uval = curval; - } - } else { + if (!ret && q.pi_state->owner != curr) + /* mmap_sem is unlocked at return of this function */ + ret = fixup_pi_state_owner(uaddr, fshared, &q, hb, curr); + else { /* * Catch the rare case, where the lock was released * when we were on the way back before we locked @@ -1333,8 +1863,9 @@ static int futex_lock_pi(u32 __user *uaddr, int detect, unsigned long sec, ret = 0; } /* Unqueue and drop the lock */ - unqueue_me_pi(&q, hb); - up_read(&curr->mm->mmap_sem); + unqueue_me_pi(&q); + if (fshared) + up_read(fshared); } if (!detect && ret == -EDEADLK && 0) @@ -1346,7 +1877,8 @@ static int futex_lock_pi(u32 __user *uaddr, int detect, unsigned long sec, queue_unlock(&q, hb); out_release_sem: - up_read(&curr->mm->mmap_sem); + if (fshared) + up_read(fshared); return ret; uaddr_faulted: @@ -1357,15 +1889,16 @@ static int futex_lock_pi(u32 __user *uaddr, int detect, unsigned long sec, * still holding the mmap_sem. */ if (attempt++) { - if (futex_handle_fault((unsigned long)uaddr, attempt)) { - ret = -EFAULT; + ret = futex_handle_fault((unsigned long)uaddr, fshared, + attempt); + if (ret) goto out_unlock_release_sem; - } goto retry_locked; } queue_unlock(&q, hb); - up_read(&curr->mm->mmap_sem); + if (fshared) + up_read(fshared); ret = get_user(uval, uaddr); if (!ret && (uval != -EFAULT)) @@ -1379,12 +1912,12 @@ static int futex_lock_pi(u32 __user *uaddr, int detect, unsigned long sec, * This is the in-kernel slowpath: we look up the PI state (if any), * and do the rt-mutex unlock. */ -static int futex_unlock_pi(u32 __user *uaddr) +static int futex_unlock_pi(u32 __user *uaddr, struct rw_semaphore *fshared) { struct futex_hash_bucket *hb; struct futex_q *this, *next; u32 uval; - struct list_head *head; + struct plist_head *head; union futex_key key; int ret, attempt = 0; @@ -1399,9 +1932,10 @@ retry: /* * First take all the futex related locks: */ - down_read(¤t->mm->mmap_sem); + if (fshared) + down_read(fshared); - ret = get_futex_key(uaddr, &key); + ret = get_futex_key(uaddr, fshared, &key); if (unlikely(ret != 0)) goto out; @@ -1435,7 +1969,7 @@ retry_locked: */ head = &hb->chain; - list_for_each_entry_safe(this, next, head, list) { + plist_for_each_entry_safe(this, next, head, list) { if (!match_futex (&this->key, &key)) continue; ret = wake_futex_pi(uaddr, uval, this); @@ -1460,7 +1994,8 @@ retry_locked: out_unlock: spin_unlock(&hb->lock); out: - up_read(¤t->mm->mmap_sem); + if (fshared) + up_read(fshared); return ret; @@ -1472,15 +2007,16 @@ pi_faulted: * still holding the mmap_sem. */ if (attempt++) { - if (futex_handle_fault((unsigned long)uaddr, attempt)) { - ret = -EFAULT; + ret = futex_handle_fault((unsigned long)uaddr, fshared, + attempt); + if (ret) goto out_unlock; - } goto retry_locked; } spin_unlock(&hb->lock); - up_read(¤t->mm->mmap_sem); + if (fshared) + up_read(fshared); ret = get_user(uval, uaddr); if (!ret && (uval != -EFAULT)) @@ -1509,10 +2045,10 @@ static unsigned int futex_poll(struct file *filp, poll_wait(filp, &q->waiters, wait); /* - * list_empty() is safe here without any lock. + * plist_node_empty() is safe here without any lock. * q->lock_ptr != 0 is not safe, because of ordering against wakeup. */ - if (list_empty(&q->list)) + if (plist_node_empty(&q->list)) ret = POLLIN | POLLRDNORM; return ret; @@ -1532,6 +2068,7 @@ static int futex_fd(u32 __user *uaddr, int signal) struct futex_q *q; struct file *filp; int ret, err; + struct rw_semaphore *fshared; static unsigned long printk_interval; if (printk_timed_ratelimit(&printk_interval, 60 * 60 * 1000)) { @@ -1573,11 +2110,12 @@ static int futex_fd(u32 __user *uaddr, int signal) } q->pi_state = NULL; - down_read(¤t->mm->mmap_sem); - err = get_futex_key(uaddr, &q->key); + fshared = ¤t->mm->mmap_sem; + down_read(fshared); + err = get_futex_key(uaddr, fshared, &q->key); if (unlikely(err != 0)) { - up_read(¤t->mm->mmap_sem); + up_read(fshared); kfree(q); goto error; } @@ -1589,7 +2127,7 @@ static int futex_fd(u32 __user *uaddr, int signal) filp->private_data = q; queue_me(q, ret, filp); - up_read(¤t->mm->mmap_sem); + up_read(fshared); /* Now we map fd to filp, so userspace can access it */ fd_install(ret, filp); @@ -1702,6 +2240,8 @@ retry: * userspace. */ mval = (uval & FUTEX_WAITERS) | FUTEX_OWNER_DIED; + /* Also keep the FUTEX_WAITER_REQUEUED flag if set */ + mval |= (uval & FUTEX_WAITER_REQUEUED); nval = futex_atomic_cmpxchg_inatomic(uaddr, uval, mval); if (nval == -EFAULT) @@ -1716,7 +2256,7 @@ retry: */ if (!pi) { if (uval & FUTEX_WAITERS) - futex_wake(uaddr, 1); + futex_wake(uaddr, &curr->mm->mmap_sem, 1); } } return 0; @@ -1772,7 +2312,8 @@ void exit_robust_list(struct task_struct *curr) return; if (pending) - handle_futex_death((void __user *)pending + futex_offset, curr, pip); + handle_futex_death((void __user *)pending + futex_offset, + curr, pip); while (entry != &head->list) { /* @@ -1798,39 +2339,47 @@ void exit_robust_list(struct task_struct *curr) } } -long do_futex(u32 __user *uaddr, int op, u32 val, unsigned long timeout, +long do_futex(u32 __user *uaddr, int op, u32 val, ktime_t *timeout, u32 __user *uaddr2, u32 val2, u32 val3) { int ret; + int cmd = op & FUTEX_CMD_MASK; + struct rw_semaphore *fshared = NULL; + + if (!(op & FUTEX_PRIVATE_FLAG)) + fshared = ¤t->mm->mmap_sem; - switch (op) { + switch (cmd) { case FUTEX_WAIT: - ret = futex_wait(uaddr, val, timeout); + ret = futex_wait(uaddr, fshared, val, timeout); break; case FUTEX_WAKE: - ret = futex_wake(uaddr, val); + ret = futex_wake(uaddr, fshared, val); break; case FUTEX_FD: /* non-zero val means F_SETOWN(getpid()) & F_SETSIG(val) */ ret = futex_fd(uaddr, val); break; case FUTEX_REQUEUE: - ret = futex_requeue(uaddr, uaddr2, val, val2, NULL); + ret = futex_requeue(uaddr, fshared, uaddr2, val, val2, NULL); break; case FUTEX_CMP_REQUEUE: - ret = futex_requeue(uaddr, uaddr2, val, val2, &val3); + ret = futex_requeue(uaddr, fshared, uaddr2, val, val2, &val3); break; case FUTEX_WAKE_OP: - ret = futex_wake_op(uaddr, uaddr2, val, val2, val3); + ret = futex_wake_op(uaddr, fshared, uaddr2, val, val2, val3); break; case FUTEX_LOCK_PI: - ret = futex_lock_pi(uaddr, val, timeout, val2, 0); + ret = futex_lock_pi(uaddr, fshared, val, timeout, 0); break; case FUTEX_UNLOCK_PI: - ret = futex_unlock_pi(uaddr); + ret = futex_unlock_pi(uaddr, fshared); break; case FUTEX_TRYLOCK_PI: - ret = futex_lock_pi(uaddr, 0, timeout, val2, 1); + ret = futex_lock_pi(uaddr, fshared, 0, timeout, 1); + break; + case FUTEX_CMP_REQUEUE_PI: + ret = futex_requeue_pi(uaddr, fshared, uaddr2, val, val2, &val3); break; default: ret = -ENOSYS; @@ -1843,29 +2392,30 @@ asmlinkage long sys_futex(u32 __user *uaddr, int op, u32 val, struct timespec __user *utime, u32 __user *uaddr2, u32 val3) { - struct timespec t; - unsigned long timeout = MAX_SCHEDULE_TIMEOUT; + struct timespec ts; + ktime_t t, *tp = NULL; u32 val2 = 0; + int cmd = op & FUTEX_CMD_MASK; - if (utime && (op == FUTEX_WAIT || op == FUTEX_LOCK_PI)) { - if (copy_from_user(&t, utime, sizeof(t)) != 0) + if (utime && (cmd == FUTEX_WAIT || cmd == FUTEX_LOCK_PI)) { + if (copy_from_user(&ts, utime, sizeof(ts)) != 0) return -EFAULT; - if (!timespec_valid(&t)) + if (!timespec_valid(&ts)) return -EINVAL; - if (op == FUTEX_WAIT) - timeout = timespec_to_jiffies(&t) + 1; - else { - timeout = t.tv_sec; - val2 = t.tv_nsec; - } + + t = timespec_to_ktime(ts); + if (cmd == FUTEX_WAIT) + t = ktime_add(ktime_get(), t); + tp = &t; } /* - * requeue parameter in 'utime' if op == FUTEX_REQUEUE. + * requeue parameter in 'utime' if cmd == FUTEX_REQUEUE. */ - if (op == FUTEX_REQUEUE || op == FUTEX_CMP_REQUEUE) + if (cmd == FUTEX_REQUEUE || cmd == FUTEX_CMP_REQUEUE + || cmd == FUTEX_CMP_REQUEUE_PI) val2 = (u32) (unsigned long) utime; - return do_futex(uaddr, op, val, timeout, uaddr2, val2, val3); + return do_futex(uaddr, op, val, tp, uaddr2, val2, val3); } static int futexfs_get_sb(struct file_system_type *fs_type, @@ -1895,7 +2445,7 @@ static int __init init(void) } for (i = 0; i < ARRAY_SIZE(futex_queues); i++) { - INIT_LIST_HEAD(&futex_queues[i].chain); + plist_head_init(&futex_queues[i].chain, &futex_queues[i].lock); spin_lock_init(&futex_queues[i].lock); } return 0; diff --git a/kernel/futex_compat.c b/kernel/futex_compat.c index 50f24eea6cd0..338a9b489fbc 100644 --- a/kernel/futex_compat.c +++ b/kernel/futex_compat.c @@ -141,24 +141,24 @@ asmlinkage long compat_sys_futex(u32 __user *uaddr, int op, u32 val, struct compat_timespec __user *utime, u32 __user *uaddr2, u32 val3) { - struct timespec t; - unsigned long timeout = MAX_SCHEDULE_TIMEOUT; + struct timespec ts; + ktime_t t, *tp = NULL; int val2 = 0; if (utime && (op == FUTEX_WAIT || op == FUTEX_LOCK_PI)) { - if (get_compat_timespec(&t, utime)) + if (get_compat_timespec(&ts, utime)) return -EFAULT; - if (!timespec_valid(&t)) + if (!timespec_valid(&ts)) return -EINVAL; + + t = timespec_to_ktime(ts); if (op == FUTEX_WAIT) - timeout = timespec_to_jiffies(&t) + 1; - else { - timeout = t.tv_sec; - val2 = t.tv_nsec; - } + t = ktime_add(ktime_get(), t); + tp = &t; } - if (op == FUTEX_REQUEUE || op == FUTEX_CMP_REQUEUE) + if (op == FUTEX_REQUEUE || op == FUTEX_CMP_REQUEUE + || op == FUTEX_CMP_REQUEUE_PI) val2 = (int) (unsigned long) utime; - return do_futex(uaddr, op, val, timeout, uaddr2, val2, val3); + return do_futex(uaddr, op, val, tp, uaddr2, val2, val3); } diff --git a/kernel/hrtimer.c b/kernel/hrtimer.c index c9f4f044a8a8..23c03f43e196 100644 --- a/kernel/hrtimer.c +++ b/kernel/hrtimer.c @@ -1411,11 +1411,13 @@ static int __cpuinit hrtimer_cpu_notify(struct notifier_block *self, switch (action) { case CPU_UP_PREPARE: + case CPU_UP_PREPARE_FROZEN: init_hrtimers_cpu(cpu); break; #ifdef CONFIG_HOTPLUG_CPU case CPU_DEAD: + case CPU_DEAD_FROZEN: clockevents_notify(CLOCK_EVT_NOTIFY_CPU_DEAD, &cpu); migrate_hrtimers(cpu); break; diff --git a/kernel/irq/handle.c b/kernel/irq/handle.c index 32e1ab1477d1..e391cbb1f566 100644 --- a/kernel/irq/handle.c +++ b/kernel/irq/handle.c @@ -22,7 +22,6 @@ * handle_bad_irq - handle spurious and unhandled irqs * @irq: the interrupt number * @desc: description of the interrupt - * @regs: pointer to a register structure * * Handles spurious and unhandled IRQ's. It also prints a debugmessage. */ diff --git a/kernel/kmod.c b/kernel/kmod.c index 49cc4b9c1a8d..4d32eb077179 100644 --- a/kernel/kmod.c +++ b/kernel/kmod.c @@ -135,7 +135,6 @@ static int ____call_usermodehelper(void *data) /* Unblock all signals and set the session keyring. */ new_session = key_get(sub_info->ring); - flush_signals(current); spin_lock_irq(¤t->sighand->siglock); old_session = __install_session_keyring(current, new_session); flush_signal_handlers(current, 1); @@ -186,14 +185,9 @@ static int wait_for_helper(void *data) { struct subprocess_info *sub_info = data; pid_t pid; - struct k_sigaction sa; /* Install a handler: if SIGCLD isn't handled sys_wait4 won't * populate the status, but will return -ECHILD. */ - sa.sa.sa_handler = SIG_IGN; - sa.sa.sa_flags = 0; - siginitset(&sa.sa.sa_mask, sigmask(SIGCHLD)); - do_sigaction(SIGCHLD, &sa, NULL); allow_signal(SIGCHLD); pid = kernel_thread(____call_usermodehelper, sub_info, SIGCHLD); diff --git a/kernel/kthread.c b/kernel/kthread.c index 87c50ccd1d4e..df8a8e8f6ca4 100644 --- a/kernel/kthread.c +++ b/kernel/kthread.c @@ -1,7 +1,7 @@ /* Kernel thread helper functions. * Copyright (C) 2004 IBM Corporation, Rusty Russell. * - * Creation is done via keventd, so that we get a clean environment + * Creation is done via kthreadd, so that we get a clean environment * even if we're invoked from userspace (think modprobe, hotplug cpu, * etc.). */ @@ -15,24 +15,22 @@ #include <linux/mutex.h> #include <asm/semaphore.h> -/* - * We dont want to execute off keventd since it might - * hold a semaphore our callers hold too: - */ -static struct workqueue_struct *helper_wq; +static DEFINE_SPINLOCK(kthread_create_lock); +static LIST_HEAD(kthread_create_list); +struct task_struct *kthreadd_task; struct kthread_create_info { - /* Information passed to kthread() from keventd. */ + /* Information passed to kthread() from kthreadd. */ int (*threadfn)(void *data); void *data; struct completion started; - /* Result passed back to kthread_create() from keventd. */ + /* Result passed back to kthread_create() from kthreadd. */ struct task_struct *result; struct completion done; - struct work_struct work; + struct list_head list; }; struct kthread_stop_info @@ -60,42 +58,17 @@ int kthread_should_stop(void) } EXPORT_SYMBOL(kthread_should_stop); -static void kthread_exit_files(void) -{ - struct fs_struct *fs; - struct task_struct *tsk = current; - - exit_fs(tsk); /* current->fs->count--; */ - fs = init_task.fs; - tsk->fs = fs; - atomic_inc(&fs->count); - exit_files(tsk); - current->files = init_task.files; - atomic_inc(&tsk->files->count); -} - static int kthread(void *_create) { struct kthread_create_info *create = _create; int (*threadfn)(void *data); void *data; - sigset_t blocked; int ret = -EINTR; - kthread_exit_files(); - - /* Copy data: it's on keventd's stack */ + /* Copy data: it's on kthread's stack */ threadfn = create->threadfn; data = create->data; - /* Block and flush all signals (in case we're not from keventd). */ - sigfillset(&blocked); - sigprocmask(SIG_BLOCK, &blocked, NULL); - flush_signals(current); - - /* By default we can run anywhere, unlike keventd. */ - set_cpus_allowed(current, CPU_MASK_ALL); - /* OK, tell user we're spawned, wait for stop or wakeup */ __set_current_state(TASK_INTERRUPTIBLE); complete(&create->started); @@ -112,11 +85,8 @@ static int kthread(void *_create) return 0; } -/* We are keventd: create a thread. */ -static void keventd_create_kthread(struct work_struct *work) +static void create_kthread(struct kthread_create_info *create) { - struct kthread_create_info *create = - container_of(work, struct kthread_create_info, work); int pid; /* We want our own signal handler (we take no signals by default). */ @@ -162,17 +132,14 @@ struct task_struct *kthread_create(int (*threadfn)(void *data), create.data = data; init_completion(&create.started); init_completion(&create.done); - INIT_WORK(&create.work, keventd_create_kthread); - - /* - * The workqueue needs to start up first: - */ - if (!helper_wq) - create.work.func(&create.work); - else { - queue_work(helper_wq, &create.work); - wait_for_completion(&create.done); - } + + spin_lock(&kthread_create_lock); + list_add_tail(&create.list, &kthread_create_list); + wake_up_process(kthreadd_task); + spin_unlock(&kthread_create_lock); + + wait_for_completion(&create.done); + if (!IS_ERR(create.result)) { va_list args; va_start(args, namefmt); @@ -180,7 +147,6 @@ struct task_struct *kthread_create(int (*threadfn)(void *data), namefmt, args); va_end(args); } - return create.result; } EXPORT_SYMBOL(kthread_create); @@ -245,12 +211,47 @@ int kthread_stop(struct task_struct *k) } EXPORT_SYMBOL(kthread_stop); -static __init int helper_init(void) + +static __init void kthreadd_setup(void) { - helper_wq = create_singlethread_workqueue("kthread"); - BUG_ON(!helper_wq); + struct task_struct *tsk = current; - return 0; + set_task_comm(tsk, "kthreadd"); + + ignore_signals(tsk); + + set_user_nice(tsk, -5); + set_cpus_allowed(tsk, CPU_MASK_ALL); } -core_initcall(helper_init); +int kthreadd(void *unused) +{ + /* Setup a clean context for our children to inherit. */ + kthreadd_setup(); + + current->flags |= PF_NOFREEZE; + + for (;;) { + set_current_state(TASK_INTERRUPTIBLE); + if (list_empty(&kthread_create_list)) + schedule(); + __set_current_state(TASK_RUNNING); + + spin_lock(&kthread_create_lock); + while (!list_empty(&kthread_create_list)) { + struct kthread_create_info *create; + + create = list_entry(kthread_create_list.next, + struct kthread_create_info, list); + list_del_init(&create->list); + spin_unlock(&kthread_create_lock); + + create_kthread(create); + + spin_lock(&kthread_create_lock); + } + spin_unlock(&kthread_create_lock); + } + + return 0; +} diff --git a/kernel/module.c b/kernel/module.c index d36e45477fac..9bd93de01f4a 100644 --- a/kernel/module.c +++ b/kernel/module.c @@ -96,9 +96,9 @@ static inline void add_taint_module(struct module *mod, unsigned flag) mod->taints |= flag; } -/* A thread that wants to hold a reference to a module only while it - * is running can call ths to safely exit. - * nfsd and lockd use this. +/* + * A thread that wants to hold a reference to a module only while it + * is running can call this to safely exit. nfsd and lockd use this. */ void __module_put_and_exit(struct module *mod, long code) { @@ -1199,7 +1199,7 @@ static int __unlink_module(void *_mod) return 0; } -/* Free a module, remove from lists, etc (must hold module mutex). */ +/* Free a module, remove from lists, etc (must hold module_mutex). */ static void free_module(struct module *mod) { /* Delete from various lists */ @@ -1246,7 +1246,7 @@ EXPORT_SYMBOL_GPL(__symbol_get); /* * Ensure that an exported symbol [global namespace] does not already exist - * in the Kernel or in some other modules exported symbol table. + * in the kernel or in some other module's exported symbol table. */ static int verify_export_symbols(struct module *mod) { diff --git a/kernel/mutex.c b/kernel/mutex.c index e7cbbb82765b..303eab18484b 100644 --- a/kernel/mutex.c +++ b/kernel/mutex.c @@ -133,7 +133,7 @@ __mutex_lock_common(struct mutex *lock, long state, unsigned int subclass) debug_mutex_lock_common(lock, &waiter); mutex_acquire(&lock->dep_map, subclass, 0, _RET_IP_); - debug_mutex_add_waiter(lock, &waiter, task->thread_info); + debug_mutex_add_waiter(lock, &waiter, task_thread_info(task)); /* add waiting tasks to the end of the waitqueue (FIFO): */ list_add_tail(&waiter.list, &lock->wait_list); @@ -159,7 +159,7 @@ __mutex_lock_common(struct mutex *lock, long state, unsigned int subclass) */ if (unlikely(state == TASK_INTERRUPTIBLE && signal_pending(task))) { - mutex_remove_waiter(lock, &waiter, task->thread_info); + mutex_remove_waiter(lock, &waiter, task_thread_info(task)); mutex_release(&lock->dep_map, 1, _RET_IP_); spin_unlock_mutex(&lock->wait_lock, flags); @@ -175,8 +175,8 @@ __mutex_lock_common(struct mutex *lock, long state, unsigned int subclass) } /* got the lock - rejoice! */ - mutex_remove_waiter(lock, &waiter, task->thread_info); - debug_mutex_set_owner(lock, task->thread_info); + mutex_remove_waiter(lock, &waiter, task_thread_info(task)); + debug_mutex_set_owner(lock, task_thread_info(task)); /* set it to 0 if there are no waiters left: */ if (likely(list_empty(&lock->wait_list))) diff --git a/kernel/power/disk.c b/kernel/power/disk.c index 06331374d862..b5f0543ed84d 100644 --- a/kernel/power/disk.c +++ b/kernel/power/disk.c @@ -30,30 +30,69 @@ char resume_file[256] = CONFIG_PM_STD_PARTITION; dev_t swsusp_resume_device; sector_t swsusp_resume_block; +enum { + HIBERNATION_INVALID, + HIBERNATION_PLATFORM, + HIBERNATION_TEST, + HIBERNATION_TESTPROC, + HIBERNATION_SHUTDOWN, + HIBERNATION_REBOOT, + /* keep last */ + __HIBERNATION_AFTER_LAST +}; +#define HIBERNATION_MAX (__HIBERNATION_AFTER_LAST-1) +#define HIBERNATION_FIRST (HIBERNATION_INVALID + 1) + +static int hibernation_mode = HIBERNATION_SHUTDOWN; + +struct hibernation_ops *hibernation_ops; + +/** + * hibernation_set_ops - set the global hibernate operations + * @ops: the hibernation operations to use in subsequent hibernation transitions + */ + +void hibernation_set_ops(struct hibernation_ops *ops) +{ + if (ops && !(ops->prepare && ops->enter && ops->finish)) { + WARN_ON(1); + return; + } + mutex_lock(&pm_mutex); + hibernation_ops = ops; + if (ops) + hibernation_mode = HIBERNATION_PLATFORM; + else if (hibernation_mode == HIBERNATION_PLATFORM) + hibernation_mode = HIBERNATION_SHUTDOWN; + + mutex_unlock(&pm_mutex); +} + + /** * platform_prepare - prepare the machine for hibernation using the * platform driver if so configured and return an error code if it fails */ -static inline int platform_prepare(void) +static int platform_prepare(void) { - int error = 0; + return (hibernation_mode == HIBERNATION_PLATFORM && hibernation_ops) ? + hibernation_ops->prepare() : 0; +} - switch (pm_disk_mode) { - case PM_DISK_TEST: - case PM_DISK_TESTPROC: - case PM_DISK_SHUTDOWN: - case PM_DISK_REBOOT: - break; - default: - if (pm_ops && pm_ops->prepare) - error = pm_ops->prepare(PM_SUSPEND_DISK); - } - return error; +/** + * platform_finish - switch the machine to the normal mode of operation + * using the platform driver (must be called after platform_prepare()) + */ + +static void platform_finish(void) +{ + if (hibernation_mode == HIBERNATION_PLATFORM && hibernation_ops) + hibernation_ops->finish(); } /** - * power_down - Shut machine down for hibernate. + * power_down - Shut the machine down for hibernation. * * Use the platform driver, if configured so; otherwise try * to power off or reboot. @@ -61,20 +100,20 @@ static inline int platform_prepare(void) static void power_down(void) { - switch (pm_disk_mode) { - case PM_DISK_TEST: - case PM_DISK_TESTPROC: + switch (hibernation_mode) { + case HIBERNATION_TEST: + case HIBERNATION_TESTPROC: break; - case PM_DISK_SHUTDOWN: + case HIBERNATION_SHUTDOWN: kernel_power_off(); break; - case PM_DISK_REBOOT: + case HIBERNATION_REBOOT: kernel_restart(NULL); break; - default: - if (pm_ops && pm_ops->enter) { + case HIBERNATION_PLATFORM: + if (hibernation_ops) { kernel_shutdown_prepare(SYSTEM_SUSPEND_DISK); - pm_ops->enter(PM_SUSPEND_DISK); + hibernation_ops->enter(); break; } } @@ -87,20 +126,6 @@ static void power_down(void) while(1); } -static inline void platform_finish(void) -{ - switch (pm_disk_mode) { - case PM_DISK_TEST: - case PM_DISK_TESTPROC: - case PM_DISK_SHUTDOWN: - case PM_DISK_REBOOT: - break; - default: - if (pm_ops && pm_ops->finish) - pm_ops->finish(PM_SUSPEND_DISK); - } -} - static void unprepare_processes(void) { thaw_processes(); @@ -120,13 +145,10 @@ static int prepare_processes(void) } /** - * pm_suspend_disk - The granpappy of hibernation power management. - * - * If not, then call swsusp to do its thing, then figure out how - * to power down the system. + * hibernate - The granpappy of the built-in hibernation management */ -int pm_suspend_disk(void) +int hibernate(void) { int error; @@ -143,7 +165,8 @@ int pm_suspend_disk(void) if (error) goto Finish; - if (pm_disk_mode == PM_DISK_TESTPROC) { + mutex_lock(&pm_mutex); + if (hibernation_mode == HIBERNATION_TESTPROC) { printk("swsusp debug: Waiting for 5 seconds.\n"); mdelay(5000); goto Thaw; @@ -168,7 +191,7 @@ int pm_suspend_disk(void) if (error) goto Enable_cpus; - if (pm_disk_mode == PM_DISK_TEST) { + if (hibernation_mode == HIBERNATION_TEST) { printk("swsusp debug: Waiting for 5 seconds.\n"); mdelay(5000); goto Enable_cpus; @@ -205,6 +228,7 @@ int pm_suspend_disk(void) device_resume(); resume_console(); Thaw: + mutex_unlock(&pm_mutex); unprepare_processes(); Finish: free_basic_memory_bitmaps(); @@ -220,7 +244,7 @@ int pm_suspend_disk(void) * Called as a late_initcall (so all devices are discovered and * initialized), we call swsusp to see if we have a saved image or not. * If so, we quiesce devices, the restore the saved image. We will - * return above (in pm_suspend_disk() ) if everything goes well. + * return above (in hibernate() ) if everything goes well. * Otherwise, we fail gracefully and return to the normally * scheduled program. * @@ -315,25 +339,26 @@ static int software_resume(void) late_initcall(software_resume); -static const char * const pm_disk_modes[] = { - [PM_DISK_PLATFORM] = "platform", - [PM_DISK_SHUTDOWN] = "shutdown", - [PM_DISK_REBOOT] = "reboot", - [PM_DISK_TEST] = "test", - [PM_DISK_TESTPROC] = "testproc", +static const char * const hibernation_modes[] = { + [HIBERNATION_PLATFORM] = "platform", + [HIBERNATION_SHUTDOWN] = "shutdown", + [HIBERNATION_REBOOT] = "reboot", + [HIBERNATION_TEST] = "test", + [HIBERNATION_TESTPROC] = "testproc", }; /** - * disk - Control suspend-to-disk mode + * disk - Control hibernation mode * * Suspend-to-disk can be handled in several ways. We have a few options * for putting the system to sleep - using the platform driver (e.g. ACPI - * or other pm_ops), powering off the system or rebooting the system - * (for testing) as well as the two test modes. + * or other hibernation_ops), powering off the system or rebooting the + * system (for testing) as well as the two test modes. * * The system can support 'platform', and that is known a priori (and - * encoded in pm_ops). However, the user may choose 'shutdown' or 'reboot' - * as alternatives, as well as the test modes 'test' and 'testproc'. + * encoded by the presence of hibernation_ops). However, the user may + * choose 'shutdown' or 'reboot' as alternatives, as well as one fo the + * test modes, 'test' or 'testproc'. * * show() will display what the mode is currently set to. * store() will accept one of @@ -345,7 +370,7 @@ static const char * const pm_disk_modes[] = { * 'testproc' * * It will only change to 'platform' if the system - * supports it (as determined from pm_ops->pm_disk_mode). + * supports it (as determined by having hibernation_ops). */ static ssize_t disk_show(struct kset *kset, char *buf) @@ -353,28 +378,25 @@ static ssize_t disk_show(struct kset *kset, char *buf) int i; char *start = buf; - for (i = PM_DISK_PLATFORM; i < PM_DISK_MAX; i++) { - if (!pm_disk_modes[i]) + for (i = HIBERNATION_FIRST; i <= HIBERNATION_MAX; i++) { + if (!hibernation_modes[i]) continue; switch (i) { - case PM_DISK_SHUTDOWN: - case PM_DISK_REBOOT: - case PM_DISK_TEST: - case PM_DISK_TESTPROC: + case HIBERNATION_SHUTDOWN: + case HIBERNATION_REBOOT: + case HIBERNATION_TEST: + case HIBERNATION_TESTPROC: break; - default: - if (pm_ops && pm_ops->enter && - (i == pm_ops->pm_disk_mode)) + case HIBERNATION_PLATFORM: + if (hibernation_ops) break; /* not a valid mode, continue with loop */ continue; } - if (i == pm_disk_mode) - buf += sprintf(buf, "[%s]", pm_disk_modes[i]); + if (i == hibernation_mode) + buf += sprintf(buf, "[%s] ", hibernation_modes[i]); else - buf += sprintf(buf, "%s", pm_disk_modes[i]); - if (i+1 != PM_DISK_MAX) - buf += sprintf(buf, " "); + buf += sprintf(buf, "%s ", hibernation_modes[i]); } buf += sprintf(buf, "\n"); return buf-start; @@ -387,39 +409,38 @@ static ssize_t disk_store(struct kset *kset, const char *buf, size_t n) int i; int len; char *p; - suspend_disk_method_t mode = 0; + int mode = HIBERNATION_INVALID; p = memchr(buf, '\n', n); len = p ? p - buf : n; mutex_lock(&pm_mutex); - for (i = PM_DISK_PLATFORM; i < PM_DISK_MAX; i++) { - if (!strncmp(buf, pm_disk_modes[i], len)) { + for (i = HIBERNATION_FIRST; i <= HIBERNATION_MAX; i++) { + if (!strncmp(buf, hibernation_modes[i], len)) { mode = i; break; } } - if (mode) { + if (mode != HIBERNATION_INVALID) { switch (mode) { - case PM_DISK_SHUTDOWN: - case PM_DISK_REBOOT: - case PM_DISK_TEST: - case PM_DISK_TESTPROC: - pm_disk_mode = mode; + case HIBERNATION_SHUTDOWN: + case HIBERNATION_REBOOT: + case HIBERNATION_TEST: + case HIBERNATION_TESTPROC: + hibernation_mode = mode; break; - default: - if (pm_ops && pm_ops->enter && - (mode == pm_ops->pm_disk_mode)) - pm_disk_mode = mode; + case HIBERNATION_PLATFORM: + if (hibernation_ops) + hibernation_mode = mode; else error = -EINVAL; } - } else { + } else error = -EINVAL; - } - pr_debug("PM: suspend-to-disk mode set to '%s'\n", - pm_disk_modes[mode]); + if (!error) + pr_debug("PM: suspend-to-disk mode set to '%s'\n", + hibernation_modes[mode]); mutex_unlock(&pm_mutex); return error ? error : n; } diff --git a/kernel/power/main.c b/kernel/power/main.c index f6dda685e7e2..40d56a31245e 100644 --- a/kernel/power/main.c +++ b/kernel/power/main.c @@ -30,7 +30,6 @@ DEFINE_MUTEX(pm_mutex); struct pm_ops *pm_ops; -suspend_disk_method_t pm_disk_mode = PM_DISK_SHUTDOWN; /** * pm_set_ops - Set the global power method table. @@ -41,10 +40,6 @@ void pm_set_ops(struct pm_ops * ops) { mutex_lock(&pm_mutex); pm_ops = ops; - if (ops && ops->pm_disk_mode != PM_DISK_INVALID) { - pm_disk_mode = ops->pm_disk_mode; - } else - pm_disk_mode = PM_DISK_SHUTDOWN; mutex_unlock(&pm_mutex); } @@ -184,24 +179,12 @@ static void suspend_finish(suspend_state_t state) static const char * const pm_states[PM_SUSPEND_MAX] = { [PM_SUSPEND_STANDBY] = "standby", [PM_SUSPEND_MEM] = "mem", - [PM_SUSPEND_DISK] = "disk", }; static inline int valid_state(suspend_state_t state) { - /* Suspend-to-disk does not really need low-level support. - * It can work with shutdown/reboot if needed. If it isn't - * configured, then it cannot be supported. - */ - if (state == PM_SUSPEND_DISK) -#ifdef CONFIG_SOFTWARE_SUSPEND - return 1; -#else - return 0; -#endif - - /* all other states need lowlevel support and need to be - * valid to the lowlevel implementation, no valid callback + /* All states need lowlevel support and need to be valid + * to the lowlevel implementation, no valid callback * implies that none are valid. */ if (!pm_ops || !pm_ops->valid || !pm_ops->valid(state)) return 0; @@ -229,11 +212,6 @@ static int enter_state(suspend_state_t state) if (!mutex_trylock(&pm_mutex)) return -EBUSY; - if (state == PM_SUSPEND_DISK) { - error = pm_suspend_disk(); - goto Unlock; - } - pr_debug("PM: Preparing system for %s sleep\n", pm_states[state]); if ((error = suspend_prepare(state))) goto Unlock; @@ -251,7 +229,7 @@ static int enter_state(suspend_state_t state) /** * pm_suspend - Externally visible function for suspending system. - * @state: Enumarted value of state to enter. + * @state: Enumerated value of state to enter. * * Determine whether or not value is within range, get state * structure, and enter (above). @@ -289,7 +267,13 @@ static ssize_t state_show(struct kset *kset, char *buf) if (pm_states[i] && valid_state(i)) s += sprintf(s,"%s ", pm_states[i]); } - s += sprintf(s,"\n"); +#ifdef CONFIG_SOFTWARE_SUSPEND + s += sprintf(s, "%s\n", "disk"); +#else + if (s != buf) + /* convert the last space to a newline */ + *(s-1) = '\n'; +#endif return (s - buf); } @@ -304,6 +288,12 @@ static ssize_t state_store(struct kset *kset, const char *buf, size_t n) p = memchr(buf, '\n', n); len = p ? p - buf : n; + /* First, check if we are requested to hibernate */ + if (!strncmp(buf, "disk", len)) { + error = hibernate(); + return error ? error : n; + } + for (s = &pm_states[state]; state < PM_SUSPEND_MAX; s++, state++) { if (*s && !strncmp(buf, *s, len)) break; diff --git a/kernel/power/power.h b/kernel/power/power.h index 34b43542785a..51381487103f 100644 --- a/kernel/power/power.h +++ b/kernel/power/power.h @@ -25,12 +25,7 @@ struct swsusp_info { */ #define SPARE_PAGES ((1024 * 1024) >> PAGE_SHIFT) -extern int pm_suspend_disk(void); -#else -static inline int pm_suspend_disk(void) -{ - return -EPERM; -} +extern struct hibernation_ops *hibernation_ops; #endif extern int pfn_is_nosave(unsigned long); diff --git a/kernel/power/snapshot.c b/kernel/power/snapshot.c index 59fb89ba9a4d..a3b7854b8f7c 100644 --- a/kernel/power/snapshot.c +++ b/kernel/power/snapshot.c @@ -1233,7 +1233,7 @@ asmlinkage int swsusp_save(void) nr_copy_pages = nr_pages; nr_meta_pages = DIV_ROUND_UP(nr_pages * sizeof(long), PAGE_SIZE); - printk("swsusp: critical section/: done (%d pages copied)\n", nr_pages); + printk("swsusp: critical section: done (%d pages copied)\n", nr_pages); return 0; } diff --git a/kernel/power/user.c b/kernel/power/user.c index 040560d9c312..24d7d78e6f42 100644 --- a/kernel/power/user.c +++ b/kernel/power/user.c @@ -130,16 +130,16 @@ static inline int platform_prepare(void) { int error = 0; - if (pm_ops && pm_ops->prepare) - error = pm_ops->prepare(PM_SUSPEND_DISK); + if (hibernation_ops) + error = hibernation_ops->prepare(); return error; } static inline void platform_finish(void) { - if (pm_ops && pm_ops->finish) - pm_ops->finish(PM_SUSPEND_DISK); + if (hibernation_ops) + hibernation_ops->finish(); } static inline int snapshot_suspend(int platform_suspend) @@ -384,7 +384,7 @@ static int snapshot_ioctl(struct inode *inode, struct file *filp, switch (arg) { case PMOPS_PREPARE: - if (pm_ops && pm_ops->enter) { + if (hibernation_ops) { data->platform_suspend = 1; error = 0; } else { @@ -395,8 +395,7 @@ static int snapshot_ioctl(struct inode *inode, struct file *filp, case PMOPS_ENTER: if (data->platform_suspend) { kernel_shutdown_prepare(SYSTEM_SUSPEND_DISK); - error = pm_ops->enter(PM_SUSPEND_DISK); - error = 0; + error = hibernation_ops->enter(); } break; diff --git a/kernel/profile.c b/kernel/profile.c index 9bfadb248dd8..cc91b9bf759d 100644 --- a/kernel/profile.c +++ b/kernel/profile.c @@ -340,6 +340,7 @@ static int __devinit profile_cpu_callback(struct notifier_block *info, switch (action) { case CPU_UP_PREPARE: + case CPU_UP_PREPARE_FROZEN: node = cpu_to_node(cpu); per_cpu(cpu_profile_flip, cpu) = 0; if (!per_cpu(cpu_profile_hits, cpu)[1]) { @@ -365,10 +366,13 @@ static int __devinit profile_cpu_callback(struct notifier_block *info, __free_page(page); return NOTIFY_BAD; case CPU_ONLINE: + case CPU_ONLINE_FROZEN: cpu_set(cpu, prof_cpu_mask); break; case CPU_UP_CANCELED: + case CPU_UP_CANCELED_FROZEN: case CPU_DEAD: + case CPU_DEAD_FROZEN: cpu_clear(cpu, prof_cpu_mask); if (per_cpu(cpu_profile_hits, cpu)[0]) { page = virt_to_page(per_cpu(cpu_profile_hits, cpu)[0]); diff --git a/kernel/rcupdate.c b/kernel/rcupdate.c index 3554b76da84c..2c2dd8410dc4 100644 --- a/kernel/rcupdate.c +++ b/kernel/rcupdate.c @@ -558,9 +558,11 @@ static int __cpuinit rcu_cpu_notify(struct notifier_block *self, long cpu = (long)hcpu; switch (action) { case CPU_UP_PREPARE: + case CPU_UP_PREPARE_FROZEN: rcu_online_cpu(cpu); break; case CPU_DEAD: + case CPU_DEAD_FROZEN: rcu_offline_cpu(cpu); break; default: diff --git a/kernel/relay.c b/kernel/relay.c index 577f251c7e28..4311101b0ca7 100644 --- a/kernel/relay.c +++ b/kernel/relay.c @@ -310,16 +310,13 @@ static struct rchan_callbacks default_channel_callbacks = { /** * wakeup_readers - wake up readers waiting on a channel - * @work: work struct that contains the the channel buffer + * @data: contains the channel buffer * - * This is the work function used to defer reader waking. The - * reason waking is deferred is that calling directly from write - * causes problems if you're writing from say the scheduler. + * This is the timer function used to defer reader waking. */ -static void wakeup_readers(struct work_struct *work) +static void wakeup_readers(unsigned long data) { - struct rchan_buf *buf = - container_of(work, struct rchan_buf, wake_readers.work); + struct rchan_buf *buf = (struct rchan_buf *)data; wake_up_interruptible(&buf->read_wait); } @@ -337,11 +334,9 @@ static void __relay_reset(struct rchan_buf *buf, unsigned int init) if (init) { init_waitqueue_head(&buf->read_wait); kref_init(&buf->kref); - INIT_DELAYED_WORK(&buf->wake_readers, NULL); - } else { - cancel_delayed_work(&buf->wake_readers); - flush_scheduled_work(); - } + setup_timer(&buf->timer, wakeup_readers, (unsigned long)buf); + } else + del_timer_sync(&buf->timer); buf->subbufs_produced = 0; buf->subbufs_consumed = 0; @@ -447,8 +442,7 @@ end: static void relay_close_buf(struct rchan_buf *buf) { buf->finalized = 1; - cancel_delayed_work(&buf->wake_readers); - flush_scheduled_work(); + del_timer_sync(&buf->timer); kref_put(&buf->kref, relay_remove_buf); } @@ -490,6 +484,7 @@ static int __cpuinit relay_hotcpu_callback(struct notifier_block *nb, switch(action) { case CPU_UP_PREPARE: + case CPU_UP_PREPARE_FROZEN: mutex_lock(&relay_channels_mutex); list_for_each_entry(chan, &relay_channels, list) { if (chan->buf[hotcpu]) @@ -506,6 +501,7 @@ static int __cpuinit relay_hotcpu_callback(struct notifier_block *nb, mutex_unlock(&relay_channels_mutex); break; case CPU_DEAD: + case CPU_DEAD_FROZEN: /* No need to flush the cpu : will be flushed upon * final relay_flush() call. */ break; @@ -608,11 +604,14 @@ size_t relay_switch_subbuf(struct rchan_buf *buf, size_t length) buf->dentry->d_inode->i_size += buf->chan->subbuf_size - buf->padding[old_subbuf]; smp_mb(); - if (waitqueue_active(&buf->read_wait)) { - PREPARE_DELAYED_WORK(&buf->wake_readers, - wakeup_readers); - schedule_delayed_work(&buf->wake_readers, 1); - } + if (waitqueue_active(&buf->read_wait)) + /* + * Calling wake_up_interruptible() from here + * will deadlock if we happen to be logging + * from the scheduler (trying to re-grab + * rq->lock), so defer it. + */ + __mod_timer(&buf->timer, jiffies + 1); } old = buf->data; diff --git a/kernel/rtmutex.c b/kernel/rtmutex.c index 180978cb2f75..12879f6c1ec3 100644 --- a/kernel/rtmutex.c +++ b/kernel/rtmutex.c @@ -56,7 +56,7 @@ * state. */ -static void +void rt_mutex_set_owner(struct rt_mutex *lock, struct task_struct *owner, unsigned long mask) { @@ -81,29 +81,6 @@ static void fixup_rt_mutex_waiters(struct rt_mutex *lock) } /* - * We can speed up the acquire/release, if the architecture - * supports cmpxchg and if there's no debugging state to be set up - */ -#if defined(__HAVE_ARCH_CMPXCHG) && !defined(CONFIG_DEBUG_RT_MUTEXES) -# define rt_mutex_cmpxchg(l,c,n) (cmpxchg(&l->owner, c, n) == c) -static inline void mark_rt_mutex_waiters(struct rt_mutex *lock) -{ - unsigned long owner, *p = (unsigned long *) &lock->owner; - - do { - owner = *p; - } while (cmpxchg(p, owner, owner | RT_MUTEX_HAS_WAITERS) != owner); -} -#else -# define rt_mutex_cmpxchg(l,c,n) (0) -static inline void mark_rt_mutex_waiters(struct rt_mutex *lock) -{ - lock->owner = (struct task_struct *) - ((unsigned long)lock->owner | RT_MUTEX_HAS_WAITERS); -} -#endif - -/* * Calculate task priority from the waiter list priority * * Return task->normal_prio when the waiter list is empty or when @@ -123,7 +100,7 @@ int rt_mutex_getprio(struct task_struct *task) * * This can be both boosting and unboosting. task->pi_lock must be held. */ -static void __rt_mutex_adjust_prio(struct task_struct *task) +void __rt_mutex_adjust_prio(struct task_struct *task) { int prio = rt_mutex_getprio(task); @@ -159,11 +136,11 @@ int max_lock_depth = 1024; * Decreases task's usage by one - may thus free the task. * Returns 0 or -EDEADLK. */ -static int rt_mutex_adjust_prio_chain(struct task_struct *task, - int deadlock_detect, - struct rt_mutex *orig_lock, - struct rt_mutex_waiter *orig_waiter, - struct task_struct *top_task) +int rt_mutex_adjust_prio_chain(struct task_struct *task, + int deadlock_detect, + struct rt_mutex *orig_lock, + struct rt_mutex_waiter *orig_waiter, + struct task_struct *top_task) { struct rt_mutex *lock; struct rt_mutex_waiter *waiter, *top_waiter = orig_waiter; @@ -524,8 +501,8 @@ static void wakeup_next_waiter(struct rt_mutex *lock) * * Must be called with lock->wait_lock held */ -static void remove_waiter(struct rt_mutex *lock, - struct rt_mutex_waiter *waiter) +void remove_waiter(struct rt_mutex *lock, + struct rt_mutex_waiter *waiter) { int first = (waiter == rt_mutex_top_waiter(lock)); struct task_struct *owner = rt_mutex_owner(lock); diff --git a/kernel/rtmutex_common.h b/kernel/rtmutex_common.h index 9c75856e791e..242ec7ee740b 100644 --- a/kernel/rtmutex_common.h +++ b/kernel/rtmutex_common.h @@ -113,6 +113,29 @@ static inline unsigned long rt_mutex_owner_pending(struct rt_mutex *lock) } /* + * We can speed up the acquire/release, if the architecture + * supports cmpxchg and if there's no debugging state to be set up + */ +#if defined(__HAVE_ARCH_CMPXCHG) && !defined(CONFIG_DEBUG_RT_MUTEXES) +# define rt_mutex_cmpxchg(l,c,n) (cmpxchg(&l->owner, c, n) == c) +static inline void mark_rt_mutex_waiters(struct rt_mutex *lock) +{ + unsigned long owner, *p = (unsigned long *) &lock->owner; + + do { + owner = *p; + } while (cmpxchg(p, owner, owner | RT_MUTEX_HAS_WAITERS) != owner); +} +#else +# define rt_mutex_cmpxchg(l,c,n) (0) +static inline void mark_rt_mutex_waiters(struct rt_mutex *lock) +{ + lock->owner = (struct task_struct *) + ((unsigned long)lock->owner | RT_MUTEX_HAS_WAITERS); +} +#endif + +/* * PI-futex support (proxy locking functions, etc.): */ extern struct task_struct *rt_mutex_next_owner(struct rt_mutex *lock); @@ -120,4 +143,15 @@ extern void rt_mutex_init_proxy_locked(struct rt_mutex *lock, struct task_struct *proxy_owner); extern void rt_mutex_proxy_unlock(struct rt_mutex *lock, struct task_struct *proxy_owner); + +extern void rt_mutex_set_owner(struct rt_mutex *lock, struct task_struct *owner, + unsigned long mask); +extern void __rt_mutex_adjust_prio(struct task_struct *task); +extern int rt_mutex_adjust_prio_chain(struct task_struct *task, + int deadlock_detect, + struct rt_mutex *orig_lock, + struct rt_mutex_waiter *orig_waiter, + struct task_struct *top_task); +extern void remove_waiter(struct rt_mutex *lock, + struct rt_mutex_waiter *waiter); #endif diff --git a/kernel/sched.c b/kernel/sched.c index 66bd7ff23f18..799d23b4e35d 100644 --- a/kernel/sched.c +++ b/kernel/sched.c @@ -305,6 +305,7 @@ struct rq { }; static DEFINE_PER_CPU(struct rq, runqueues) ____cacheline_aligned_in_smp; +static DEFINE_MUTEX(sched_hotcpu_mutex); static inline int cpu_of(struct rq *rq) { @@ -4520,13 +4521,13 @@ long sched_setaffinity(pid_t pid, cpumask_t new_mask) struct task_struct *p; int retval; - lock_cpu_hotplug(); + mutex_lock(&sched_hotcpu_mutex); read_lock(&tasklist_lock); p = find_process_by_pid(pid); if (!p) { read_unlock(&tasklist_lock); - unlock_cpu_hotplug(); + mutex_unlock(&sched_hotcpu_mutex); return -ESRCH; } @@ -4553,7 +4554,7 @@ long sched_setaffinity(pid_t pid, cpumask_t new_mask) out_unlock: put_task_struct(p); - unlock_cpu_hotplug(); + mutex_unlock(&sched_hotcpu_mutex); return retval; } @@ -4610,7 +4611,7 @@ long sched_getaffinity(pid_t pid, cpumask_t *mask) struct task_struct *p; int retval; - lock_cpu_hotplug(); + mutex_lock(&sched_hotcpu_mutex); read_lock(&tasklist_lock); retval = -ESRCH; @@ -4626,7 +4627,7 @@ long sched_getaffinity(pid_t pid, cpumask_t *mask) out_unlock: read_unlock(&tasklist_lock); - unlock_cpu_hotplug(); + mutex_unlock(&sched_hotcpu_mutex); if (retval) return retval; @@ -5388,7 +5389,12 @@ migration_call(struct notifier_block *nfb, unsigned long action, void *hcpu) struct rq *rq; switch (action) { + case CPU_LOCK_ACQUIRE: + mutex_lock(&sched_hotcpu_mutex); + break; + case CPU_UP_PREPARE: + case CPU_UP_PREPARE_FROZEN: p = kthread_create(migration_thread, hcpu, "migration/%d",cpu); if (IS_ERR(p)) return NOTIFY_BAD; @@ -5402,12 +5408,14 @@ migration_call(struct notifier_block *nfb, unsigned long action, void *hcpu) break; case CPU_ONLINE: + case CPU_ONLINE_FROZEN: /* Strictly unneccessary, as first user will wake it. */ wake_up_process(cpu_rq(cpu)->migration_thread); break; #ifdef CONFIG_HOTPLUG_CPU case CPU_UP_CANCELED: + case CPU_UP_CANCELED_FROZEN: if (!cpu_rq(cpu)->migration_thread) break; /* Unbind it from offline cpu so it can run. Fall thru. */ @@ -5418,6 +5426,7 @@ migration_call(struct notifier_block *nfb, unsigned long action, void *hcpu) break; case CPU_DEAD: + case CPU_DEAD_FROZEN: migrate_live_tasks(cpu); rq = cpu_rq(cpu); kthread_stop(rq->migration_thread); @@ -5433,7 +5442,7 @@ migration_call(struct notifier_block *nfb, unsigned long action, void *hcpu) BUG_ON(rq->nr_running != 0); /* No need to migrate the tasks: it was best-effort if - * they didn't do lock_cpu_hotplug(). Just wake up + * they didn't take sched_hotcpu_mutex. Just wake up * the requestors. */ spin_lock_irq(&rq->lock); while (!list_empty(&rq->migration_queue)) { @@ -5447,6 +5456,9 @@ migration_call(struct notifier_block *nfb, unsigned long action, void *hcpu) spin_unlock_irq(&rq->lock); break; #endif + case CPU_LOCK_RELEASE: + mutex_unlock(&sched_hotcpu_mutex); + break; } return NOTIFY_OK; } @@ -6822,10 +6834,10 @@ int arch_reinit_sched_domains(void) { int err; - lock_cpu_hotplug(); + mutex_lock(&sched_hotcpu_mutex); detach_destroy_domains(&cpu_online_map); err = arch_init_sched_domains(&cpu_online_map); - unlock_cpu_hotplug(); + mutex_unlock(&sched_hotcpu_mutex); return err; } @@ -6904,14 +6916,20 @@ static int update_sched_domains(struct notifier_block *nfb, { switch (action) { case CPU_UP_PREPARE: + case CPU_UP_PREPARE_FROZEN: case CPU_DOWN_PREPARE: + case CPU_DOWN_PREPARE_FROZEN: detach_destroy_domains(&cpu_online_map); return NOTIFY_OK; case CPU_UP_CANCELED: + case CPU_UP_CANCELED_FROZEN: case CPU_DOWN_FAILED: + case CPU_DOWN_FAILED_FROZEN: case CPU_ONLINE: + case CPU_ONLINE_FROZEN: case CPU_DEAD: + case CPU_DEAD_FROZEN: /* * Fall through and re-initialise the domains. */ @@ -6930,12 +6948,12 @@ void __init sched_init_smp(void) { cpumask_t non_isolated_cpus; - lock_cpu_hotplug(); + mutex_lock(&sched_hotcpu_mutex); arch_init_sched_domains(&cpu_online_map); cpus_andnot(non_isolated_cpus, cpu_possible_map, cpu_isolated_map); if (cpus_empty(non_isolated_cpus)) cpu_set(smp_processor_id(), non_isolated_cpus); - unlock_cpu_hotplug(); + mutex_unlock(&sched_hotcpu_mutex); /* XXX: Theoretical race here - CPU may be hotplugged now */ hotcpu_notifier(update_sched_domains, 0); diff --git a/kernel/signal.c b/kernel/signal.c index 1368e67c8482..2ac3a668d9dd 100644 --- a/kernel/signal.c +++ b/kernel/signal.c @@ -38,125 +38,6 @@ static struct kmem_cache *sigqueue_cachep; -/* - * In POSIX a signal is sent either to a specific thread (Linux task) - * or to the process as a whole (Linux thread group). How the signal - * is sent determines whether it's to one thread or the whole group, - * which determines which signal mask(s) are involved in blocking it - * from being delivered until later. When the signal is delivered, - * either it's caught or ignored by a user handler or it has a default - * effect that applies to the whole thread group (POSIX process). - * - * The possible effects an unblocked signal set to SIG_DFL can have are: - * ignore - Nothing Happens - * terminate - kill the process, i.e. all threads in the group, - * similar to exit_group. The group leader (only) reports - * WIFSIGNALED status to its parent. - * coredump - write a core dump file describing all threads using - * the same mm and then kill all those threads - * stop - stop all the threads in the group, i.e. TASK_STOPPED state - * - * SIGKILL and SIGSTOP cannot be caught, blocked, or ignored. - * Other signals when not blocked and set to SIG_DFL behaves as follows. - * The job control signals also have other special effects. - * - * +--------------------+------------------+ - * | POSIX signal | default action | - * +--------------------+------------------+ - * | SIGHUP | terminate | - * | SIGINT | terminate | - * | SIGQUIT | coredump | - * | SIGILL | coredump | - * | SIGTRAP | coredump | - * | SIGABRT/SIGIOT | coredump | - * | SIGBUS | coredump | - * | SIGFPE | coredump | - * | SIGKILL | terminate(+) | - * | SIGUSR1 | terminate | - * | SIGSEGV | coredump | - * | SIGUSR2 | terminate | - * | SIGPIPE | terminate | - * | SIGALRM | terminate | - * | SIGTERM | terminate | - * | SIGCHLD | ignore | - * | SIGCONT | ignore(*) | - * | SIGSTOP | stop(*)(+) | - * | SIGTSTP | stop(*) | - * | SIGTTIN | stop(*) | - * | SIGTTOU | stop(*) | - * | SIGURG | ignore | - * | SIGXCPU | coredump | - * | SIGXFSZ | coredump | - * | SIGVTALRM | terminate | - * | SIGPROF | terminate | - * | SIGPOLL/SIGIO | terminate | - * | SIGSYS/SIGUNUSED | coredump | - * | SIGSTKFLT | terminate | - * | SIGWINCH | ignore | - * | SIGPWR | terminate | - * | SIGRTMIN-SIGRTMAX | terminate | - * +--------------------+------------------+ - * | non-POSIX signal | default action | - * +--------------------+------------------+ - * | SIGEMT | coredump | - * +--------------------+------------------+ - * - * (+) For SIGKILL and SIGSTOP the action is "always", not just "default". - * (*) Special job control effects: - * When SIGCONT is sent, it resumes the process (all threads in the group) - * from TASK_STOPPED state and also clears any pending/queued stop signals - * (any of those marked with "stop(*)"). This happens regardless of blocking, - * catching, or ignoring SIGCONT. When any stop signal is sent, it clears - * any pending/queued SIGCONT signals; this happens regardless of blocking, - * catching, or ignored the stop signal, though (except for SIGSTOP) the - * default action of stopping the process may happen later or never. - */ - -#ifdef SIGEMT -#define M_SIGEMT M(SIGEMT) -#else -#define M_SIGEMT 0 -#endif - -#if SIGRTMIN > BITS_PER_LONG -#define M(sig) (1ULL << ((sig)-1)) -#else -#define M(sig) (1UL << ((sig)-1)) -#endif -#define T(sig, mask) (M(sig) & (mask)) - -#define SIG_KERNEL_ONLY_MASK (\ - M(SIGKILL) | M(SIGSTOP) ) - -#define SIG_KERNEL_STOP_MASK (\ - M(SIGSTOP) | M(SIGTSTP) | M(SIGTTIN) | M(SIGTTOU) ) - -#define SIG_KERNEL_COREDUMP_MASK (\ - M(SIGQUIT) | M(SIGILL) | M(SIGTRAP) | M(SIGABRT) | \ - M(SIGFPE) | M(SIGSEGV) | M(SIGBUS) | M(SIGSYS) | \ - M(SIGXCPU) | M(SIGXFSZ) | M_SIGEMT ) - -#define SIG_KERNEL_IGNORE_MASK (\ - M(SIGCONT) | M(SIGCHLD) | M(SIGWINCH) | M(SIGURG) ) - -#define sig_kernel_only(sig) \ - (((sig) < SIGRTMIN) && T(sig, SIG_KERNEL_ONLY_MASK)) -#define sig_kernel_coredump(sig) \ - (((sig) < SIGRTMIN) && T(sig, SIG_KERNEL_COREDUMP_MASK)) -#define sig_kernel_ignore(sig) \ - (((sig) < SIGRTMIN) && T(sig, SIG_KERNEL_IGNORE_MASK)) -#define sig_kernel_stop(sig) \ - (((sig) < SIGRTMIN) && T(sig, SIG_KERNEL_STOP_MASK)) - -#define sig_needs_tasklist(sig) ((sig) == SIGCONT) - -#define sig_user_defined(t, signr) \ - (((t)->sighand->action[(signr)-1].sa.sa_handler != SIG_DFL) && \ - ((t)->sighand->action[(signr)-1].sa.sa_handler != SIG_IGN)) - -#define sig_fatal(t, signr) \ - (!T(signr, SIG_KERNEL_IGNORE_MASK|SIG_KERNEL_STOP_MASK) && \ - (t)->sighand->action[(signr)-1].sa.sa_handler == SIG_DFL) static int sig_ignored(struct task_struct *t, int sig) { @@ -328,6 +209,16 @@ void flush_signals(struct task_struct *t) spin_unlock_irqrestore(&t->sighand->siglock, flags); } +void ignore_signals(struct task_struct *t) +{ + int i; + + for (i = 0; i < _NSIG; ++i) + t->sighand->action[i].sa.sa_handler = SIG_IGN; + + flush_signals(t); +} + /* * Flush all handlers for a task. */ @@ -1032,17 +923,6 @@ void zap_other_threads(struct task_struct *p) if (t->exit_state) continue; - /* - * We don't want to notify the parent, since we are - * killed as part of a thread group due to another - * thread doing an execve() or similar. So set the - * exit signal to -1 to allow immediate reaping of - * the process. But don't detach the thread group - * leader. - */ - if (t != p->group_leader) - t->exit_signal = -1; - /* SIGKILL will be handled before any pending SIGSTOP */ sigaddset(&t->pending.signal, SIGKILL); signal_wake_up(t, 1); diff --git a/kernel/softirq.c b/kernel/softirq.c index 8b75008e2bd8..0b9886a00e74 100644 --- a/kernel/softirq.c +++ b/kernel/softirq.c @@ -593,6 +593,7 @@ static int __cpuinit cpu_callback(struct notifier_block *nfb, switch (action) { case CPU_UP_PREPARE: + case CPU_UP_PREPARE_FROZEN: p = kthread_create(ksoftirqd, hcpu, "ksoftirqd/%d", hotcpu); if (IS_ERR(p)) { printk("ksoftirqd for %i failed\n", hotcpu); @@ -602,16 +603,19 @@ static int __cpuinit cpu_callback(struct notifier_block *nfb, per_cpu(ksoftirqd, hotcpu) = p; break; case CPU_ONLINE: + case CPU_ONLINE_FROZEN: wake_up_process(per_cpu(ksoftirqd, hotcpu)); break; #ifdef CONFIG_HOTPLUG_CPU case CPU_UP_CANCELED: + case CPU_UP_CANCELED_FROZEN: if (!per_cpu(ksoftirqd, hotcpu)) break; /* Unbind so it can run. Fall thru. */ kthread_bind(per_cpu(ksoftirqd, hotcpu), any_online_cpu(cpu_online_map)); case CPU_DEAD: + case CPU_DEAD_FROZEN: p = per_cpu(ksoftirqd, hotcpu); per_cpu(ksoftirqd, hotcpu) = NULL; kthread_stop(p); diff --git a/kernel/softlockup.c b/kernel/softlockup.c index 8fa7040247ad..0131e296ffb4 100644 --- a/kernel/softlockup.c +++ b/kernel/softlockup.c @@ -146,6 +146,7 @@ cpu_callback(struct notifier_block *nfb, unsigned long action, void *hcpu) switch (action) { case CPU_UP_PREPARE: + case CPU_UP_PREPARE_FROZEN: BUG_ON(per_cpu(watchdog_task, hotcpu)); p = kthread_create(watchdog, hcpu, "watchdog/%d", hotcpu); if (IS_ERR(p)) { @@ -157,16 +158,19 @@ cpu_callback(struct notifier_block *nfb, unsigned long action, void *hcpu) kthread_bind(p, hotcpu); break; case CPU_ONLINE: + case CPU_ONLINE_FROZEN: wake_up_process(per_cpu(watchdog_task, hotcpu)); break; #ifdef CONFIG_HOTPLUG_CPU case CPU_UP_CANCELED: + case CPU_UP_CANCELED_FROZEN: if (!per_cpu(watchdog_task, hotcpu)) break; /* Unbind so it can run. Fall thru. */ kthread_bind(per_cpu(watchdog_task, hotcpu), any_online_cpu(cpu_online_map)); case CPU_DEAD: + case CPU_DEAD_FROZEN: p = per_cpu(watchdog_task, hotcpu); per_cpu(watchdog_task, hotcpu) = NULL; kthread_stop(p); diff --git a/kernel/sys.c b/kernel/sys.c index 926bf9d7ac45..cdb7e9457ba6 100644 --- a/kernel/sys.c +++ b/kernel/sys.c @@ -134,19 +134,39 @@ static int notifier_chain_unregister(struct notifier_block **nl, return -ENOENT; } +/** + * notifier_call_chain - Informs the registered notifiers about an event. + * @nl: Pointer to head of the blocking notifier chain + * @val: Value passed unmodified to notifier function + * @v: Pointer passed unmodified to notifier function + * @nr_to_call: Number of notifier functions to be called. Don't care + * value of this parameter is -1. + * @nr_calls: Records the number of notifications sent. Don't care + * value of this field is NULL. + * @returns: notifier_call_chain returns the value returned by the + * last notifier function called. + */ + static int __kprobes notifier_call_chain(struct notifier_block **nl, - unsigned long val, void *v) + unsigned long val, void *v, + int nr_to_call, int *nr_calls) { int ret = NOTIFY_DONE; struct notifier_block *nb, *next_nb; nb = rcu_dereference(*nl); - while (nb) { + + while (nb && nr_to_call) { next_nb = rcu_dereference(nb->next); ret = nb->notifier_call(nb, val, v); + + if (nr_calls) + (*nr_calls)++; + if ((ret & NOTIFY_STOP_MASK) == NOTIFY_STOP_MASK) break; nb = next_nb; + nr_to_call--; } return ret; } @@ -205,10 +225,12 @@ int atomic_notifier_chain_unregister(struct atomic_notifier_head *nh, EXPORT_SYMBOL_GPL(atomic_notifier_chain_unregister); /** - * atomic_notifier_call_chain - Call functions in an atomic notifier chain + * __atomic_notifier_call_chain - Call functions in an atomic notifier chain * @nh: Pointer to head of the atomic notifier chain * @val: Value passed unmodified to notifier function * @v: Pointer passed unmodified to notifier function + * @nr_to_call: See the comment for notifier_call_chain. + * @nr_calls: See the comment for notifier_call_chain. * * Calls each function in a notifier chain in turn. The functions * run in an atomic context, so they must not block. @@ -222,19 +244,27 @@ EXPORT_SYMBOL_GPL(atomic_notifier_chain_unregister); * of the last notifier function called. */ -int __kprobes atomic_notifier_call_chain(struct atomic_notifier_head *nh, - unsigned long val, void *v) +int __kprobes __atomic_notifier_call_chain(struct atomic_notifier_head *nh, + unsigned long val, void *v, + int nr_to_call, int *nr_calls) { int ret; rcu_read_lock(); - ret = notifier_call_chain(&nh->head, val, v); + ret = notifier_call_chain(&nh->head, val, v, nr_to_call, nr_calls); rcu_read_unlock(); return ret; } -EXPORT_SYMBOL_GPL(atomic_notifier_call_chain); +EXPORT_SYMBOL_GPL(__atomic_notifier_call_chain); + +int __kprobes atomic_notifier_call_chain(struct atomic_notifier_head *nh, + unsigned long val, void *v) +{ + return __atomic_notifier_call_chain(nh, val, v, -1, NULL); +} +EXPORT_SYMBOL_GPL(atomic_notifier_call_chain); /* * Blocking notifier chain routines. All access to the chain is * synchronized by an rwsem. @@ -304,10 +334,12 @@ int blocking_notifier_chain_unregister(struct blocking_notifier_head *nh, EXPORT_SYMBOL_GPL(blocking_notifier_chain_unregister); /** - * blocking_notifier_call_chain - Call functions in a blocking notifier chain + * __blocking_notifier_call_chain - Call functions in a blocking notifier chain * @nh: Pointer to head of the blocking notifier chain * @val: Value passed unmodified to notifier function * @v: Pointer passed unmodified to notifier function + * @nr_to_call: See comment for notifier_call_chain. + * @nr_calls: See comment for notifier_call_chain. * * Calls each function in a notifier chain in turn. The functions * run in a process context, so they are allowed to block. @@ -320,8 +352,9 @@ EXPORT_SYMBOL_GPL(blocking_notifier_chain_unregister); * of the last notifier function called. */ -int blocking_notifier_call_chain(struct blocking_notifier_head *nh, - unsigned long val, void *v) +int __blocking_notifier_call_chain(struct blocking_notifier_head *nh, + unsigned long val, void *v, + int nr_to_call, int *nr_calls) { int ret = NOTIFY_DONE; @@ -332,12 +365,19 @@ int blocking_notifier_call_chain(struct blocking_notifier_head *nh, */ if (rcu_dereference(nh->head)) { down_read(&nh->rwsem); - ret = notifier_call_chain(&nh->head, val, v); + ret = notifier_call_chain(&nh->head, val, v, nr_to_call, + nr_calls); up_read(&nh->rwsem); } return ret; } +EXPORT_SYMBOL_GPL(__blocking_notifier_call_chain); +int blocking_notifier_call_chain(struct blocking_notifier_head *nh, + unsigned long val, void *v) +{ + return __blocking_notifier_call_chain(nh, val, v, -1, NULL); +} EXPORT_SYMBOL_GPL(blocking_notifier_call_chain); /* @@ -383,10 +423,12 @@ int raw_notifier_chain_unregister(struct raw_notifier_head *nh, EXPORT_SYMBOL_GPL(raw_notifier_chain_unregister); /** - * raw_notifier_call_chain - Call functions in a raw notifier chain + * __raw_notifier_call_chain - Call functions in a raw notifier chain * @nh: Pointer to head of the raw notifier chain * @val: Value passed unmodified to notifier function * @v: Pointer passed unmodified to notifier function + * @nr_to_call: See comment for notifier_call_chain. + * @nr_calls: See comment for notifier_call_chain * * Calls each function in a notifier chain in turn. The functions * run in an undefined context. @@ -400,10 +442,19 @@ EXPORT_SYMBOL_GPL(raw_notifier_chain_unregister); * of the last notifier function called. */ +int __raw_notifier_call_chain(struct raw_notifier_head *nh, + unsigned long val, void *v, + int nr_to_call, int *nr_calls) +{ + return notifier_call_chain(&nh->head, val, v, nr_to_call, nr_calls); +} + +EXPORT_SYMBOL_GPL(__raw_notifier_call_chain); + int raw_notifier_call_chain(struct raw_notifier_head *nh, unsigned long val, void *v) { - return notifier_call_chain(&nh->head, val, v); + return __raw_notifier_call_chain(nh, val, v, -1, NULL); } EXPORT_SYMBOL_GPL(raw_notifier_call_chain); @@ -478,10 +529,12 @@ int srcu_notifier_chain_unregister(struct srcu_notifier_head *nh, EXPORT_SYMBOL_GPL(srcu_notifier_chain_unregister); /** - * srcu_notifier_call_chain - Call functions in an SRCU notifier chain + * __srcu_notifier_call_chain - Call functions in an SRCU notifier chain * @nh: Pointer to head of the SRCU notifier chain * @val: Value passed unmodified to notifier function * @v: Pointer passed unmodified to notifier function + * @nr_to_call: See comment for notifier_call_chain. + * @nr_calls: See comment for notifier_call_chain * * Calls each function in a notifier chain in turn. The functions * run in a process context, so they are allowed to block. @@ -494,18 +547,25 @@ EXPORT_SYMBOL_GPL(srcu_notifier_chain_unregister); * of the last notifier function called. */ -int srcu_notifier_call_chain(struct srcu_notifier_head *nh, - unsigned long val, void *v) +int __srcu_notifier_call_chain(struct srcu_notifier_head *nh, + unsigned long val, void *v, + int nr_to_call, int *nr_calls) { int ret; int idx; idx = srcu_read_lock(&nh->srcu); - ret = notifier_call_chain(&nh->head, val, v); + ret = notifier_call_chain(&nh->head, val, v, nr_to_call, nr_calls); srcu_read_unlock(&nh->srcu, idx); return ret; } +EXPORT_SYMBOL_GPL(__srcu_notifier_call_chain); +int srcu_notifier_call_chain(struct srcu_notifier_head *nh, + unsigned long val, void *v) +{ + return __srcu_notifier_call_chain(nh, val, v, -1, NULL); +} EXPORT_SYMBOL_GPL(srcu_notifier_call_chain); /** @@ -881,7 +941,7 @@ asmlinkage long sys_reboot(int magic1, int magic2, unsigned int cmd, void __user #ifdef CONFIG_SOFTWARE_SUSPEND case LINUX_REBOOT_CMD_SW_SUSPEND: { - int ret = pm_suspend(PM_SUSPEND_DISK); + int ret = hibernate(); unlock_kernel(); return ret; } @@ -1292,7 +1352,7 @@ asmlinkage long sys_setfsuid(uid_t uid) } /* - * Samma på svenska.. + * Samma pÃ¥ svenska.. */ asmlinkage long sys_setfsgid(gid_t gid) { diff --git a/kernel/sysctl.c b/kernel/sysctl.c index f0664bd5011c..4073353abd4f 100644 --- a/kernel/sysctl.c +++ b/kernel/sysctl.c @@ -77,6 +77,7 @@ extern int sysctl_drop_caches; extern int percpu_pagelist_fraction; extern int compat_log; extern int maps_protect; +extern int sysctl_stat_interval; /* this is needed for the proc_dointvec_minmax for [fs_]overflow UID and GID */ static int maxolduid = 65535; @@ -857,6 +858,17 @@ static ctl_table vm_table[] = { .extra2 = &one_hundred, }, #endif +#ifdef CONFIG_SMP + { + .ctl_name = CTL_UNNUMBERED, + .procname = "stat_interval", + .data = &sysctl_stat_interval, + .maxlen = sizeof(sysctl_stat_interval), + .mode = 0644, + .proc_handler = &proc_dointvec_jiffies, + .strategy = &sysctl_jiffies, + }, +#endif #if defined(CONFIG_X86_32) || \ (defined(CONFIG_SUPERH) && defined(CONFIG_VSYSCALL)) { diff --git a/kernel/time/clocksource.c b/kernel/time/clocksource.c index fe5c7db24247..3db5c3c460d7 100644 --- a/kernel/time/clocksource.c +++ b/kernel/time/clocksource.c @@ -74,15 +74,17 @@ static struct clocksource *watchdog; static struct timer_list watchdog_timer; static DEFINE_SPINLOCK(watchdog_lock); static cycle_t watchdog_last; +static int watchdog_resumed; + /* - * Interval: 0.5sec Treshold: 0.0625s + * Interval: 0.5sec Threshold: 0.0625s */ #define WATCHDOG_INTERVAL (HZ >> 1) -#define WATCHDOG_TRESHOLD (NSEC_PER_SEC >> 4) +#define WATCHDOG_THRESHOLD (NSEC_PER_SEC >> 4) static void clocksource_ratewd(struct clocksource *cs, int64_t delta) { - if (delta > -WATCHDOG_TRESHOLD && delta < WATCHDOG_TRESHOLD) + if (delta > -WATCHDOG_THRESHOLD && delta < WATCHDOG_THRESHOLD) return; printk(KERN_WARNING "Clocksource %s unstable (delta = %Ld ns)\n", @@ -98,15 +100,26 @@ static void clocksource_watchdog(unsigned long data) struct clocksource *cs, *tmp; cycle_t csnow, wdnow; int64_t wd_nsec, cs_nsec; + int resumed; spin_lock(&watchdog_lock); + resumed = watchdog_resumed; + if (unlikely(resumed)) + watchdog_resumed = 0; + wdnow = watchdog->read(); wd_nsec = cyc2ns(watchdog, (wdnow - watchdog_last) & watchdog->mask); watchdog_last = wdnow; list_for_each_entry_safe(cs, tmp, &watchdog_list, wd_list) { csnow = cs->read(); + + if (unlikely(resumed)) { + cs->wd_last = csnow; + continue; + } + /* Initialized ? */ if (!(cs->flags & CLOCK_SOURCE_WATCHDOG)) { if ((cs->flags & CLOCK_SOURCE_IS_CONTINUOUS) && @@ -136,6 +149,13 @@ static void clocksource_watchdog(unsigned long data) } spin_unlock(&watchdog_lock); } +static void clocksource_resume_watchdog(void) +{ + spin_lock(&watchdog_lock); + watchdog_resumed = 1; + spin_unlock(&watchdog_lock); +} + static void clocksource_check_watchdog(struct clocksource *cs) { struct clocksource *cse; @@ -182,9 +202,34 @@ static void clocksource_check_watchdog(struct clocksource *cs) if (cs->flags & CLOCK_SOURCE_IS_CONTINUOUS) cs->flags |= CLOCK_SOURCE_VALID_FOR_HRES; } + +static inline void clocksource_resume_watchdog(void) { } #endif /** + * clocksource_resume - resume the clocksource(s) + */ +void clocksource_resume(void) +{ + struct list_head *tmp; + unsigned long flags; + + spin_lock_irqsave(&clocksource_lock, flags); + + list_for_each(tmp, &clocksource_list) { + struct clocksource *cs; + + cs = list_entry(tmp, struct clocksource, list); + if (cs->resume) + cs->resume(); + } + + clocksource_resume_watchdog(); + + spin_unlock_irqrestore(&clocksource_lock, flags); +} + +/** * clocksource_get_next - Returns the selected clocksource * */ diff --git a/kernel/time/timer_list.c b/kernel/time/timer_list.c index b734ca4bc75e..8bbcfb77f7d2 100644 --- a/kernel/time/timer_list.c +++ b/kernel/time/timer_list.c @@ -65,7 +65,7 @@ print_timer(struct seq_file *m, struct hrtimer *timer, int idx, u64 now) SEQ_printf(m, ", %s/%d", tmp, timer->start_pid); #endif SEQ_printf(m, "\n"); - SEQ_printf(m, " # expires at %Ld nsecs [in %Ld nsecs]\n", + SEQ_printf(m, " # expires at %Lu nsecs [in %Lu nsecs]\n", (unsigned long long)ktime_to_ns(timer->expires), (unsigned long long)(ktime_to_ns(timer->expires) - now)); } @@ -111,14 +111,14 @@ print_base(struct seq_file *m, struct hrtimer_clock_base *base, u64 now) { SEQ_printf(m, " .index: %d\n", base->index); - SEQ_printf(m, " .resolution: %Ld nsecs\n", + SEQ_printf(m, " .resolution: %Lu nsecs\n", (unsigned long long)ktime_to_ns(base->resolution)); SEQ_printf(m, " .get_time: "); print_name_offset(m, base->get_time); SEQ_printf(m, "\n"); #ifdef CONFIG_HIGH_RES_TIMERS - SEQ_printf(m, " .offset: %Ld nsecs\n", - ktime_to_ns(base->offset)); + SEQ_printf(m, " .offset: %Lu nsecs\n", + (unsigned long long) ktime_to_ns(base->offset)); #endif SEQ_printf(m, "active timers:\n"); print_active_timers(m, base, now); @@ -135,10 +135,11 @@ static void print_cpu(struct seq_file *m, int cpu, u64 now) print_base(m, cpu_base->clock_base + i, now); } #define P(x) \ - SEQ_printf(m, " .%-15s: %Ld\n", #x, (u64)(cpu_base->x)) + SEQ_printf(m, " .%-15s: %Lu\n", #x, \ + (unsigned long long)(cpu_base->x)) #define P_ns(x) \ - SEQ_printf(m, " .%-15s: %Ld nsecs\n", #x, \ - (u64)(ktime_to_ns(cpu_base->x))) + SEQ_printf(m, " .%-15s: %Lu nsecs\n", #x, \ + (unsigned long long)(ktime_to_ns(cpu_base->x))) #ifdef CONFIG_HIGH_RES_TIMERS P_ns(expires_next); @@ -150,10 +151,11 @@ static void print_cpu(struct seq_file *m, int cpu, u64 now) #ifdef CONFIG_TICK_ONESHOT # define P(x) \ - SEQ_printf(m, " .%-15s: %Ld\n", #x, (u64)(ts->x)) + SEQ_printf(m, " .%-15s: %Lu\n", #x, \ + (unsigned long long)(ts->x)) # define P_ns(x) \ - SEQ_printf(m, " .%-15s: %Ld nsecs\n", #x, \ - (u64)(ktime_to_ns(ts->x))) + SEQ_printf(m, " .%-15s: %Lu nsecs\n", #x, \ + (unsigned long long)(ktime_to_ns(ts->x))) { struct tick_sched *ts = tick_get_tick_sched(cpu); P(nohz_mode); @@ -167,7 +169,8 @@ static void print_cpu(struct seq_file *m, int cpu, u64 now) P(last_jiffies); P(next_jiffies); P_ns(idle_expires); - SEQ_printf(m, "jiffies: %Ld\n", (u64)jiffies); + SEQ_printf(m, "jiffies: %Lu\n", + (unsigned long long)jiffies); } #endif diff --git a/kernel/timer.c b/kernel/timer.c index 7a6448340f90..59a28b1752f8 100644 --- a/kernel/timer.c +++ b/kernel/timer.c @@ -92,24 +92,24 @@ static DEFINE_PER_CPU(tvec_base_t *, tvec_bases) = &boot_tvec_bases; /* Functions below help us manage 'deferrable' flag */ static inline unsigned int tbase_get_deferrable(tvec_base_t *base) { - return ((unsigned int)(unsigned long)base & TBASE_DEFERRABLE_FLAG); + return (unsigned int)((unsigned long)base & TBASE_DEFERRABLE_FLAG); } static inline tvec_base_t *tbase_get_base(tvec_base_t *base) { - return ((tvec_base_t *)((unsigned long)base & ~TBASE_DEFERRABLE_FLAG)); + return (tvec_base_t *)((unsigned long)base & ~TBASE_DEFERRABLE_FLAG); } static inline void timer_set_deferrable(struct timer_list *timer) { - timer->base = ((tvec_base_t *)((unsigned long)(timer->base) | - TBASE_DEFERRABLE_FLAG)); + timer->base = (tvec_base_t *)((unsigned long)timer->base | + TBASE_DEFERRABLE_FLAG); } static inline void timer_set_base(struct timer_list *timer, tvec_base_t *new_base) { - timer->base = (tvec_base_t *)((unsigned long)(new_base) | + timer->base = (tvec_base_t *)((unsigned long)new_base | tbase_get_deferrable(timer->base)); } @@ -1293,11 +1293,13 @@ static int __cpuinit timer_cpu_notify(struct notifier_block *self, long cpu = (long)hcpu; switch(action) { case CPU_UP_PREPARE: + case CPU_UP_PREPARE_FROZEN: if (init_timers_cpu(cpu) < 0) return NOTIFY_BAD; break; #ifdef CONFIG_HOTPLUG_CPU case CPU_DEAD: + case CPU_DEAD_FROZEN: migrate_timers(cpu); break; #endif @@ -1497,6 +1499,8 @@ unregister_time_interpolator(struct time_interpolator *ti) prev = &curr->next; } + clocksource_resume(); + write_seqlock_irqsave(&xtime_lock, flags); if (ti == time_interpolator) { /* we lost the best time-interpolator: */ diff --git a/kernel/wait.c b/kernel/wait.c index 59a82f63275d..444ddbfaefc4 100644 --- a/kernel/wait.c +++ b/kernel/wait.c @@ -61,7 +61,7 @@ EXPORT_SYMBOL(remove_wait_queue); * The spin_unlock() itself is semi-permeable and only protects * one way (it only protects stuff inside the critical region and * stops them from bleeding out - it would still allow subsequent - * loads to move into the the critical region). + * loads to move into the critical region). */ void fastcall prepare_to_wait(wait_queue_head_t *q, wait_queue_t *wait, int state) diff --git a/kernel/workqueue.c b/kernel/workqueue.c index b6fa5e63085d..fb56fedd5c02 100644 --- a/kernel/workqueue.c +++ b/kernel/workqueue.c @@ -36,30 +36,20 @@ /* * The per-CPU workqueue (if single thread, we always use the first * possible cpu). - * - * The sequence counters are for flush_scheduled_work(). It wants to wait - * until all currently-scheduled works are completed, but it doesn't - * want to be livelocked by new, incoming ones. So it waits until - * remove_sequence is >= the insert_sequence which pertained when - * flush_scheduled_work() was called. */ struct cpu_workqueue_struct { spinlock_t lock; - long remove_sequence; /* Least-recently added (next to run) */ - long insert_sequence; /* Next to add */ - struct list_head worklist; wait_queue_head_t more_work; - wait_queue_head_t work_done; + struct work_struct *current_work; struct workqueue_struct *wq; struct task_struct *thread; + int should_stop; int run_depth; /* Detect run_workqueue() recursion depth */ - - int freezeable; /* Freeze the thread during suspend */ } ____cacheline_aligned; /* @@ -68,8 +58,10 @@ struct cpu_workqueue_struct { */ struct workqueue_struct { struct cpu_workqueue_struct *cpu_wq; + struct list_head list; const char *name; - struct list_head list; /* Empty if single thread */ + int singlethread; + int freezeable; /* Freeze threads during suspend */ }; /* All the per-cpu workqueues on the system, for hotplug cpu to add/remove @@ -77,106 +69,68 @@ struct workqueue_struct { static DEFINE_MUTEX(workqueue_mutex); static LIST_HEAD(workqueues); -static int singlethread_cpu; +static int singlethread_cpu __read_mostly; +static cpumask_t cpu_singlethread_map __read_mostly; +/* optimization, we could use cpu_possible_map */ +static cpumask_t cpu_populated_map __read_mostly; /* If it's single threaded, it isn't in the list of workqueues. */ static inline int is_single_threaded(struct workqueue_struct *wq) { - return list_empty(&wq->list); + return wq->singlethread; +} + +static const cpumask_t *wq_cpu_map(struct workqueue_struct *wq) +{ + return is_single_threaded(wq) + ? &cpu_singlethread_map : &cpu_populated_map; +} + +static +struct cpu_workqueue_struct *wq_per_cpu(struct workqueue_struct *wq, int cpu) +{ + if (unlikely(is_single_threaded(wq))) + cpu = singlethread_cpu; + return per_cpu_ptr(wq->cpu_wq, cpu); } /* * Set the workqueue on which a work item is to be run * - Must *only* be called if the pending flag is set */ -static inline void set_wq_data(struct work_struct *work, void *wq) +static inline void set_wq_data(struct work_struct *work, + struct cpu_workqueue_struct *cwq) { unsigned long new; BUG_ON(!work_pending(work)); - new = (unsigned long) wq | (1UL << WORK_STRUCT_PENDING); + new = (unsigned long) cwq | (1UL << WORK_STRUCT_PENDING); new |= WORK_STRUCT_FLAG_MASK & *work_data_bits(work); atomic_long_set(&work->data, new); } -static inline void *get_wq_data(struct work_struct *work) +static inline +struct cpu_workqueue_struct *get_wq_data(struct work_struct *work) { return (void *) (atomic_long_read(&work->data) & WORK_STRUCT_WQ_DATA_MASK); } -static int __run_work(struct cpu_workqueue_struct *cwq, struct work_struct *work) +static void insert_work(struct cpu_workqueue_struct *cwq, + struct work_struct *work, int tail) { - int ret = 0; - unsigned long flags; - - spin_lock_irqsave(&cwq->lock, flags); + set_wq_data(work, cwq); /* - * We need to re-validate the work info after we've gotten - * the cpu_workqueue lock. We can run the work now iff: - * - * - the wq_data still matches the cpu_workqueue_struct - * - AND the work is still marked pending - * - AND the work is still on a list (which will be this - * workqueue_struct list) - * - * All these conditions are important, because we - * need to protect against the work being run right - * now on another CPU (all but the last one might be - * true if it's currently running and has not been - * released yet, for example). + * Ensure that we get the right work->data if we see the + * result of list_add() below, see try_to_grab_pending(). */ - if (get_wq_data(work) == cwq - && work_pending(work) - && !list_empty(&work->entry)) { - work_func_t f = work->func; - list_del_init(&work->entry); - spin_unlock_irqrestore(&cwq->lock, flags); - - if (!test_bit(WORK_STRUCT_NOAUTOREL, work_data_bits(work))) - work_release(work); - f(work); - - spin_lock_irqsave(&cwq->lock, flags); - cwq->remove_sequence++; - wake_up(&cwq->work_done); - ret = 1; - } - spin_unlock_irqrestore(&cwq->lock, flags); - return ret; -} - -/** - * run_scheduled_work - run scheduled work synchronously - * @work: work to run - * - * This checks if the work was pending, and runs it - * synchronously if so. It returns a boolean to indicate - * whether it had any scheduled work to run or not. - * - * NOTE! This _only_ works for normal work_structs. You - * CANNOT use this for delayed work, because the wq data - * for delayed work will not point properly to the per- - * CPU workqueue struct, but will change! - */ -int fastcall run_scheduled_work(struct work_struct *work) -{ - for (;;) { - struct cpu_workqueue_struct *cwq; - - if (!work_pending(work)) - return 0; - if (list_empty(&work->entry)) - return 0; - /* NOTE! This depends intimately on __queue_work! */ - cwq = get_wq_data(work); - if (!cwq) - return 0; - if (__run_work(cwq, work)) - return 1; - } + smp_wmb(); + if (tail) + list_add_tail(&work->entry, &cwq->worklist); + else + list_add(&work->entry, &cwq->worklist); + wake_up(&cwq->more_work); } -EXPORT_SYMBOL(run_scheduled_work); /* Preempt must be disabled. */ static void __queue_work(struct cpu_workqueue_struct *cwq, @@ -185,10 +139,7 @@ static void __queue_work(struct cpu_workqueue_struct *cwq, unsigned long flags; spin_lock_irqsave(&cwq->lock, flags); - set_wq_data(work, cwq); - list_add_tail(&work->entry, &cwq->worklist); - cwq->insert_sequence++; - wake_up(&cwq->more_work); + insert_work(cwq, work, 1); spin_unlock_irqrestore(&cwq->lock, flags); } @@ -204,16 +155,14 @@ static void __queue_work(struct cpu_workqueue_struct *cwq, */ int fastcall queue_work(struct workqueue_struct *wq, struct work_struct *work) { - int ret = 0, cpu = get_cpu(); + int ret = 0; if (!test_and_set_bit(WORK_STRUCT_PENDING, work_data_bits(work))) { - if (unlikely(is_single_threaded(wq))) - cpu = singlethread_cpu; BUG_ON(!list_empty(&work->entry)); - __queue_work(per_cpu_ptr(wq->cpu_wq, cpu), work); + __queue_work(wq_per_cpu(wq, get_cpu()), work); + put_cpu(); ret = 1; } - put_cpu(); return ret; } EXPORT_SYMBOL_GPL(queue_work); @@ -221,13 +170,10 @@ EXPORT_SYMBOL_GPL(queue_work); void delayed_work_timer_fn(unsigned long __data) { struct delayed_work *dwork = (struct delayed_work *)__data; - struct workqueue_struct *wq = get_wq_data(&dwork->work); - int cpu = smp_processor_id(); + struct cpu_workqueue_struct *cwq = get_wq_data(&dwork->work); + struct workqueue_struct *wq = cwq->wq; - if (unlikely(is_single_threaded(wq))) - cpu = singlethread_cpu; - - __queue_work(per_cpu_ptr(wq->cpu_wq, cpu), &dwork->work); + __queue_work(wq_per_cpu(wq, smp_processor_id()), &dwork->work); } /** @@ -241,27 +187,11 @@ void delayed_work_timer_fn(unsigned long __data) int fastcall queue_delayed_work(struct workqueue_struct *wq, struct delayed_work *dwork, unsigned long delay) { - int ret = 0; - struct timer_list *timer = &dwork->timer; - struct work_struct *work = &dwork->work; - - timer_stats_timer_set_start_info(timer); + timer_stats_timer_set_start_info(&dwork->timer); if (delay == 0) - return queue_work(wq, work); - - if (!test_and_set_bit(WORK_STRUCT_PENDING, work_data_bits(work))) { - BUG_ON(timer_pending(timer)); - BUG_ON(!list_empty(&work->entry)); + return queue_work(wq, &dwork->work); - /* This stores wq for the moment, for the timer_fn */ - set_wq_data(work, wq); - timer->expires = jiffies + delay; - timer->data = (unsigned long)dwork; - timer->function = delayed_work_timer_fn; - add_timer(timer); - ret = 1; - } - return ret; + return queue_delayed_work_on(-1, wq, dwork, delay); } EXPORT_SYMBOL_GPL(queue_delayed_work); @@ -285,12 +215,16 @@ int queue_delayed_work_on(int cpu, struct workqueue_struct *wq, BUG_ON(timer_pending(timer)); BUG_ON(!list_empty(&work->entry)); - /* This stores wq for the moment, for the timer_fn */ - set_wq_data(work, wq); + /* This stores cwq for the moment, for the timer_fn */ + set_wq_data(work, wq_per_cpu(wq, raw_smp_processor_id())); timer->expires = jiffies + delay; timer->data = (unsigned long)dwork; timer->function = delayed_work_timer_fn; - add_timer_on(timer, cpu); + + if (unlikely(cpu >= 0)) + add_timer_on(timer, cpu); + else + add_timer(timer); ret = 1; } return ret; @@ -299,13 +233,7 @@ EXPORT_SYMBOL_GPL(queue_delayed_work_on); static void run_workqueue(struct cpu_workqueue_struct *cwq) { - unsigned long flags; - - /* - * Keep taking off work from the queue until - * done. - */ - spin_lock_irqsave(&cwq->lock, flags); + spin_lock_irq(&cwq->lock); cwq->run_depth++; if (cwq->run_depth > 3) { /* morton gets to eat his hat */ @@ -318,12 +246,12 @@ static void run_workqueue(struct cpu_workqueue_struct *cwq) struct work_struct, entry); work_func_t f = work->func; + cwq->current_work = work; list_del_init(cwq->worklist.next); - spin_unlock_irqrestore(&cwq->lock, flags); + spin_unlock_irq(&cwq->lock); BUG_ON(get_wq_data(work) != cwq); - if (!test_bit(WORK_STRUCT_NOAUTOREL, work_data_bits(work))) - work_release(work); + work_clear_pending(work); f(work); if (unlikely(in_atomic() || lockdep_depth(current) > 0)) { @@ -337,63 +265,81 @@ static void run_workqueue(struct cpu_workqueue_struct *cwq) dump_stack(); } - spin_lock_irqsave(&cwq->lock, flags); - cwq->remove_sequence++; - wake_up(&cwq->work_done); + spin_lock_irq(&cwq->lock); + cwq->current_work = NULL; } cwq->run_depth--; - spin_unlock_irqrestore(&cwq->lock, flags); + spin_unlock_irq(&cwq->lock); +} + +/* + * NOTE: the caller must not touch *cwq if this func returns true + */ +static int cwq_should_stop(struct cpu_workqueue_struct *cwq) +{ + int should_stop = cwq->should_stop; + + if (unlikely(should_stop)) { + spin_lock_irq(&cwq->lock); + should_stop = cwq->should_stop && list_empty(&cwq->worklist); + if (should_stop) + cwq->thread = NULL; + spin_unlock_irq(&cwq->lock); + } + + return should_stop; } static int worker_thread(void *__cwq) { struct cpu_workqueue_struct *cwq = __cwq; - DECLARE_WAITQUEUE(wait, current); - struct k_sigaction sa; - sigset_t blocked; + DEFINE_WAIT(wait); - if (!cwq->freezeable) + if (!cwq->wq->freezeable) current->flags |= PF_NOFREEZE; set_user_nice(current, -5); - /* Block and flush all signals */ - sigfillset(&blocked); - sigprocmask(SIG_BLOCK, &blocked, NULL); - flush_signals(current); - - /* - * We inherited MPOL_INTERLEAVE from the booting kernel. - * Set MPOL_DEFAULT to insure node local allocations. - */ - numa_default_policy(); - - /* SIG_IGN makes children autoreap: see do_notify_parent(). */ - sa.sa.sa_handler = SIG_IGN; - sa.sa.sa_flags = 0; - siginitset(&sa.sa.sa_mask, sigmask(SIGCHLD)); - do_sigaction(SIGCHLD, &sa, (struct k_sigaction *)0); + for (;;) { + prepare_to_wait(&cwq->more_work, &wait, TASK_INTERRUPTIBLE); + if (!freezing(current) && !cwq->should_stop + && list_empty(&cwq->worklist)) + schedule(); + finish_wait(&cwq->more_work, &wait); - set_current_state(TASK_INTERRUPTIBLE); - while (!kthread_should_stop()) { - if (cwq->freezeable) - try_to_freeze(); + try_to_freeze(); - add_wait_queue(&cwq->more_work, &wait); - if (list_empty(&cwq->worklist)) - schedule(); - else - __set_current_state(TASK_RUNNING); - remove_wait_queue(&cwq->more_work, &wait); + if (cwq_should_stop(cwq)) + break; - if (!list_empty(&cwq->worklist)) - run_workqueue(cwq); - set_current_state(TASK_INTERRUPTIBLE); + run_workqueue(cwq); } - __set_current_state(TASK_RUNNING); + return 0; } +struct wq_barrier { + struct work_struct work; + struct completion done; +}; + +static void wq_barrier_func(struct work_struct *work) +{ + struct wq_barrier *barr = container_of(work, struct wq_barrier, work); + complete(&barr->done); +} + +static void insert_wq_barrier(struct cpu_workqueue_struct *cwq, + struct wq_barrier *barr, int tail) +{ + INIT_WORK(&barr->work, wq_barrier_func); + __set_bit(WORK_STRUCT_PENDING, work_data_bits(&barr->work)); + + init_completion(&barr->done); + + insert_work(cwq, &barr->work, tail); +} + static void flush_cpu_workqueue(struct cpu_workqueue_struct *cwq) { if (cwq->thread == current) { @@ -403,21 +349,18 @@ static void flush_cpu_workqueue(struct cpu_workqueue_struct *cwq) */ run_workqueue(cwq); } else { - DEFINE_WAIT(wait); - long sequence_needed; + struct wq_barrier barr; + int active = 0; spin_lock_irq(&cwq->lock); - sequence_needed = cwq->insert_sequence; - - while (sequence_needed - cwq->remove_sequence > 0) { - prepare_to_wait(&cwq->work_done, &wait, - TASK_UNINTERRUPTIBLE); - spin_unlock_irq(&cwq->lock); - schedule(); - spin_lock_irq(&cwq->lock); + if (!list_empty(&cwq->worklist) || cwq->current_work != NULL) { + insert_wq_barrier(cwq, &barr, 1); + active = 1; } - finish_wait(&cwq->work_done, &wait); spin_unlock_irq(&cwq->lock); + + if (active) + wait_for_completion(&barr.done); } } @@ -428,151 +371,145 @@ static void flush_cpu_workqueue(struct cpu_workqueue_struct *cwq) * Forces execution of the workqueue and blocks until its completion. * This is typically used in driver shutdown handlers. * - * This function will sample each workqueue's current insert_sequence number and - * will sleep until the head sequence is greater than or equal to that. This - * means that we sleep until all works which were queued on entry have been - * handled, but we are not livelocked by new incoming ones. + * We sleep until all works which were queued on entry have been handled, + * but we are not livelocked by new incoming ones. * * This function used to run the workqueues itself. Now we just wait for the * helper threads to do it. */ void fastcall flush_workqueue(struct workqueue_struct *wq) { + const cpumask_t *cpu_map = wq_cpu_map(wq); + int cpu; + might_sleep(); + for_each_cpu_mask(cpu, *cpu_map) + flush_cpu_workqueue(per_cpu_ptr(wq->cpu_wq, cpu)); +} +EXPORT_SYMBOL_GPL(flush_workqueue); - if (is_single_threaded(wq)) { - /* Always use first cpu's area. */ - flush_cpu_workqueue(per_cpu_ptr(wq->cpu_wq, singlethread_cpu)); - } else { - int cpu; +/* + * Upon a successful return, the caller "owns" WORK_STRUCT_PENDING bit, + * so this work can't be re-armed in any way. + */ +static int try_to_grab_pending(struct work_struct *work) +{ + struct cpu_workqueue_struct *cwq; + int ret = 0; - mutex_lock(&workqueue_mutex); - for_each_online_cpu(cpu) - flush_cpu_workqueue(per_cpu_ptr(wq->cpu_wq, cpu)); - mutex_unlock(&workqueue_mutex); + if (!test_and_set_bit(WORK_STRUCT_PENDING, work_data_bits(work))) + return 1; + + /* + * The queueing is in progress, or it is already queued. Try to + * steal it from ->worklist without clearing WORK_STRUCT_PENDING. + */ + + cwq = get_wq_data(work); + if (!cwq) + return ret; + + spin_lock_irq(&cwq->lock); + if (!list_empty(&work->entry)) { + /* + * This work is queued, but perhaps we locked the wrong cwq. + * In that case we must see the new value after rmb(), see + * insert_work()->wmb(). + */ + smp_rmb(); + if (cwq == get_wq_data(work)) { + list_del_init(&work->entry); + ret = 1; + } } + spin_unlock_irq(&cwq->lock); + + return ret; } -EXPORT_SYMBOL_GPL(flush_workqueue); -static struct task_struct *create_workqueue_thread(struct workqueue_struct *wq, - int cpu, int freezeable) +static void wait_on_cpu_work(struct cpu_workqueue_struct *cwq, + struct work_struct *work) { - struct cpu_workqueue_struct *cwq = per_cpu_ptr(wq->cpu_wq, cpu); - struct task_struct *p; + struct wq_barrier barr; + int running = 0; - spin_lock_init(&cwq->lock); - cwq->wq = wq; - cwq->thread = NULL; - cwq->insert_sequence = 0; - cwq->remove_sequence = 0; - cwq->freezeable = freezeable; - INIT_LIST_HEAD(&cwq->worklist); - init_waitqueue_head(&cwq->more_work); - init_waitqueue_head(&cwq->work_done); + spin_lock_irq(&cwq->lock); + if (unlikely(cwq->current_work == work)) { + insert_wq_barrier(cwq, &barr, 0); + running = 1; + } + spin_unlock_irq(&cwq->lock); - if (is_single_threaded(wq)) - p = kthread_create(worker_thread, cwq, "%s", wq->name); - else - p = kthread_create(worker_thread, cwq, "%s/%d", wq->name, cpu); - if (IS_ERR(p)) - return NULL; - cwq->thread = p; - return p; + if (unlikely(running)) + wait_for_completion(&barr.done); } -struct workqueue_struct *__create_workqueue(const char *name, - int singlethread, int freezeable) +static void wait_on_work(struct work_struct *work) { - int cpu, destroy = 0; + struct cpu_workqueue_struct *cwq; struct workqueue_struct *wq; - struct task_struct *p; + const cpumask_t *cpu_map; + int cpu; - wq = kzalloc(sizeof(*wq), GFP_KERNEL); - if (!wq) - return NULL; + might_sleep(); - wq->cpu_wq = alloc_percpu(struct cpu_workqueue_struct); - if (!wq->cpu_wq) { - kfree(wq); - return NULL; - } + cwq = get_wq_data(work); + if (!cwq) + return; - wq->name = name; - mutex_lock(&workqueue_mutex); - if (singlethread) { - INIT_LIST_HEAD(&wq->list); - p = create_workqueue_thread(wq, singlethread_cpu, freezeable); - if (!p) - destroy = 1; - else - wake_up_process(p); - } else { - list_add(&wq->list, &workqueues); - for_each_online_cpu(cpu) { - p = create_workqueue_thread(wq, cpu, freezeable); - if (p) { - kthread_bind(p, cpu); - wake_up_process(p); - } else - destroy = 1; - } - } - mutex_unlock(&workqueue_mutex); + wq = cwq->wq; + cpu_map = wq_cpu_map(wq); - /* - * Was there any error during startup? If yes then clean up: - */ - if (destroy) { - destroy_workqueue(wq); - wq = NULL; - } - return wq; + for_each_cpu_mask(cpu, *cpu_map) + wait_on_cpu_work(per_cpu_ptr(wq->cpu_wq, cpu), work); } -EXPORT_SYMBOL_GPL(__create_workqueue); -static void cleanup_workqueue_thread(struct workqueue_struct *wq, int cpu) +/** + * cancel_work_sync - block until a work_struct's callback has terminated + * @work: the work which is to be flushed + * + * cancel_work_sync() will cancel the work if it is queued. If the work's + * callback appears to be running, cancel_work_sync() will block until it + * has completed. + * + * It is possible to use this function if the work re-queues itself. It can + * cancel the work even if it migrates to another workqueue, however in that + * case it only guarantees that work->func() has completed on the last queued + * workqueue. + * + * cancel_work_sync(&delayed_work->work) should be used only if ->timer is not + * pending, otherwise it goes into a busy-wait loop until the timer expires. + * + * The caller must ensure that workqueue_struct on which this work was last + * queued can't be destroyed before this function returns. + */ +void cancel_work_sync(struct work_struct *work) { - struct cpu_workqueue_struct *cwq; - unsigned long flags; - struct task_struct *p; - - cwq = per_cpu_ptr(wq->cpu_wq, cpu); - spin_lock_irqsave(&cwq->lock, flags); - p = cwq->thread; - cwq->thread = NULL; - spin_unlock_irqrestore(&cwq->lock, flags); - if (p) - kthread_stop(p); + while (!try_to_grab_pending(work)) + cpu_relax(); + wait_on_work(work); + work_clear_pending(work); } +EXPORT_SYMBOL_GPL(cancel_work_sync); /** - * destroy_workqueue - safely terminate a workqueue - * @wq: target workqueue + * cancel_rearming_delayed_work - reliably kill off a delayed work. + * @dwork: the delayed work struct * - * Safely destroy a workqueue. All work currently pending will be done first. + * It is possible to use this function if @dwork rearms itself via queue_work() + * or queue_delayed_work(). See also the comment for cancel_work_sync(). */ -void destroy_workqueue(struct workqueue_struct *wq) +void cancel_rearming_delayed_work(struct delayed_work *dwork) { - int cpu; - - flush_workqueue(wq); - - /* We don't need the distraction of CPUs appearing and vanishing. */ - mutex_lock(&workqueue_mutex); - if (is_single_threaded(wq)) - cleanup_workqueue_thread(wq, singlethread_cpu); - else { - for_each_online_cpu(cpu) - cleanup_workqueue_thread(wq, cpu); - list_del(&wq->list); - } - mutex_unlock(&workqueue_mutex); - free_percpu(wq->cpu_wq); - kfree(wq); + while (!del_timer(&dwork->timer) && + !try_to_grab_pending(&dwork->work)) + cpu_relax(); + wait_on_work(&dwork->work); + work_clear_pending(&dwork->work); } -EXPORT_SYMBOL_GPL(destroy_workqueue); +EXPORT_SYMBOL(cancel_rearming_delayed_work); -static struct workqueue_struct *keventd_wq; +static struct workqueue_struct *keventd_wq __read_mostly; /** * schedule_work - put work task in global workqueue @@ -638,7 +575,7 @@ int schedule_on_each_cpu(work_func_t func) if (!works) return -ENOMEM; - mutex_lock(&workqueue_mutex); + preempt_disable(); /* CPU hotplug */ for_each_online_cpu(cpu) { struct work_struct *work = per_cpu_ptr(works, cpu); @@ -646,7 +583,7 @@ int schedule_on_each_cpu(work_func_t func) set_bit(WORK_STRUCT_PENDING, work_data_bits(work)); __queue_work(per_cpu_ptr(keventd_wq->cpu_wq, cpu), work); } - mutex_unlock(&workqueue_mutex); + preempt_enable(); flush_workqueue(keventd_wq); free_percpu(works); return 0; @@ -659,29 +596,6 @@ void flush_scheduled_work(void) EXPORT_SYMBOL(flush_scheduled_work); /** - * cancel_rearming_delayed_workqueue - reliably kill off a delayed work whose handler rearms the delayed work. - * @wq: the controlling workqueue structure - * @dwork: the delayed work struct - */ -void cancel_rearming_delayed_workqueue(struct workqueue_struct *wq, - struct delayed_work *dwork) -{ - while (!cancel_delayed_work(dwork)) - flush_workqueue(wq); -} -EXPORT_SYMBOL(cancel_rearming_delayed_workqueue); - -/** - * cancel_rearming_delayed_work - reliably kill off a delayed keventd work whose handler rearms the delayed work. - * @dwork: the delayed work struct - */ -void cancel_rearming_delayed_work(struct delayed_work *dwork) -{ - cancel_rearming_delayed_workqueue(keventd_wq, dwork); -} -EXPORT_SYMBOL(cancel_rearming_delayed_work); - -/** * execute_in_process_context - reliably execute the routine with user context * @fn: the function to execute * @ew: guaranteed storage for the execute work structure (must @@ -728,94 +642,209 @@ int current_is_keventd(void) } -/* Take the work from this (downed) CPU. */ -static void take_over_work(struct workqueue_struct *wq, unsigned int cpu) +static struct cpu_workqueue_struct * +init_cpu_workqueue(struct workqueue_struct *wq, int cpu) { struct cpu_workqueue_struct *cwq = per_cpu_ptr(wq->cpu_wq, cpu); - struct list_head list; - struct work_struct *work; - spin_lock_irq(&cwq->lock); - list_replace_init(&cwq->worklist, &list); + cwq->wq = wq; + spin_lock_init(&cwq->lock); + INIT_LIST_HEAD(&cwq->worklist); + init_waitqueue_head(&cwq->more_work); + + return cwq; +} + +static int create_workqueue_thread(struct cpu_workqueue_struct *cwq, int cpu) +{ + struct workqueue_struct *wq = cwq->wq; + const char *fmt = is_single_threaded(wq) ? "%s" : "%s/%d"; + struct task_struct *p; + + p = kthread_create(worker_thread, cwq, fmt, wq->name, cpu); + /* + * Nobody can add the work_struct to this cwq, + * if (caller is __create_workqueue) + * nobody should see this wq + * else // caller is CPU_UP_PREPARE + * cpu is not on cpu_online_map + * so we can abort safely. + */ + if (IS_ERR(p)) + return PTR_ERR(p); + + cwq->thread = p; + cwq->should_stop = 0; + + return 0; +} + +static void start_workqueue_thread(struct cpu_workqueue_struct *cwq, int cpu) +{ + struct task_struct *p = cwq->thread; - while (!list_empty(&list)) { - printk("Taking work for %s\n", wq->name); - work = list_entry(list.next,struct work_struct,entry); - list_del(&work->entry); - __queue_work(per_cpu_ptr(wq->cpu_wq, smp_processor_id()), work); + if (p != NULL) { + if (cpu >= 0) + kthread_bind(p, cpu); + wake_up_process(p); } - spin_unlock_irq(&cwq->lock); } -/* We're holding the cpucontrol mutex here */ -static int __devinit workqueue_cpu_callback(struct notifier_block *nfb, - unsigned long action, - void *hcpu) +struct workqueue_struct *__create_workqueue(const char *name, + int singlethread, int freezeable) { - unsigned int hotcpu = (unsigned long)hcpu; struct workqueue_struct *wq; + struct cpu_workqueue_struct *cwq; + int err = 0, cpu; - switch (action) { - case CPU_UP_PREPARE: - mutex_lock(&workqueue_mutex); - /* Create a new workqueue thread for it. */ - list_for_each_entry(wq, &workqueues, list) { - if (!create_workqueue_thread(wq, hotcpu, 0)) { - printk("workqueue for %i failed\n", hotcpu); - return NOTIFY_BAD; - } - } - break; + wq = kzalloc(sizeof(*wq), GFP_KERNEL); + if (!wq) + return NULL; - case CPU_ONLINE: - /* Kick off worker threads. */ - list_for_each_entry(wq, &workqueues, list) { - struct cpu_workqueue_struct *cwq; + wq->cpu_wq = alloc_percpu(struct cpu_workqueue_struct); + if (!wq->cpu_wq) { + kfree(wq); + return NULL; + } - cwq = per_cpu_ptr(wq->cpu_wq, hotcpu); - kthread_bind(cwq->thread, hotcpu); - wake_up_process(cwq->thread); - } - mutex_unlock(&workqueue_mutex); - break; + wq->name = name; + wq->singlethread = singlethread; + wq->freezeable = freezeable; + INIT_LIST_HEAD(&wq->list); - case CPU_UP_CANCELED: - list_for_each_entry(wq, &workqueues, list) { - if (!per_cpu_ptr(wq->cpu_wq, hotcpu)->thread) + if (singlethread) { + cwq = init_cpu_workqueue(wq, singlethread_cpu); + err = create_workqueue_thread(cwq, singlethread_cpu); + start_workqueue_thread(cwq, -1); + } else { + mutex_lock(&workqueue_mutex); + list_add(&wq->list, &workqueues); + + for_each_possible_cpu(cpu) { + cwq = init_cpu_workqueue(wq, cpu); + if (err || !cpu_online(cpu)) continue; - /* Unbind so it can run. */ - kthread_bind(per_cpu_ptr(wq->cpu_wq, hotcpu)->thread, - any_online_cpu(cpu_online_map)); - cleanup_workqueue_thread(wq, hotcpu); + err = create_workqueue_thread(cwq, cpu); + start_workqueue_thread(cwq, cpu); } mutex_unlock(&workqueue_mutex); - break; + } + + if (err) { + destroy_workqueue(wq); + wq = NULL; + } + return wq; +} +EXPORT_SYMBOL_GPL(__create_workqueue); + +static void cleanup_workqueue_thread(struct cpu_workqueue_struct *cwq, int cpu) +{ + struct wq_barrier barr; + int alive = 0; + + spin_lock_irq(&cwq->lock); + if (cwq->thread != NULL) { + insert_wq_barrier(cwq, &barr, 1); + cwq->should_stop = 1; + alive = 1; + } + spin_unlock_irq(&cwq->lock); + + if (alive) { + wait_for_completion(&barr.done); - case CPU_DOWN_PREPARE: + while (unlikely(cwq->thread != NULL)) + cpu_relax(); + /* + * Wait until cwq->thread unlocks cwq->lock, + * it won't touch *cwq after that. + */ + smp_rmb(); + spin_unlock_wait(&cwq->lock); + } +} + +/** + * destroy_workqueue - safely terminate a workqueue + * @wq: target workqueue + * + * Safely destroy a workqueue. All work currently pending will be done first. + */ +void destroy_workqueue(struct workqueue_struct *wq) +{ + const cpumask_t *cpu_map = wq_cpu_map(wq); + struct cpu_workqueue_struct *cwq; + int cpu; + + mutex_lock(&workqueue_mutex); + list_del(&wq->list); + mutex_unlock(&workqueue_mutex); + + for_each_cpu_mask(cpu, *cpu_map) { + cwq = per_cpu_ptr(wq->cpu_wq, cpu); + cleanup_workqueue_thread(cwq, cpu); + } + + free_percpu(wq->cpu_wq); + kfree(wq); +} +EXPORT_SYMBOL_GPL(destroy_workqueue); + +static int __devinit workqueue_cpu_callback(struct notifier_block *nfb, + unsigned long action, + void *hcpu) +{ + unsigned int cpu = (unsigned long)hcpu; + struct cpu_workqueue_struct *cwq; + struct workqueue_struct *wq; + + action &= ~CPU_TASKS_FROZEN; + + switch (action) { + case CPU_LOCK_ACQUIRE: mutex_lock(&workqueue_mutex); - break; + return NOTIFY_OK; - case CPU_DOWN_FAILED: + case CPU_LOCK_RELEASE: mutex_unlock(&workqueue_mutex); - break; + return NOTIFY_OK; - case CPU_DEAD: - list_for_each_entry(wq, &workqueues, list) - cleanup_workqueue_thread(wq, hotcpu); - list_for_each_entry(wq, &workqueues, list) - take_over_work(wq, hotcpu); - mutex_unlock(&workqueue_mutex); - break; + case CPU_UP_PREPARE: + cpu_set(cpu, cpu_populated_map); + } + + list_for_each_entry(wq, &workqueues, list) { + cwq = per_cpu_ptr(wq->cpu_wq, cpu); + + switch (action) { + case CPU_UP_PREPARE: + if (!create_workqueue_thread(cwq, cpu)) + break; + printk(KERN_ERR "workqueue for %i failed\n", cpu); + return NOTIFY_BAD; + + case CPU_ONLINE: + start_workqueue_thread(cwq, cpu); + break; + + case CPU_UP_CANCELED: + start_workqueue_thread(cwq, -1); + case CPU_DEAD: + cleanup_workqueue_thread(cwq, cpu); + break; + } } return NOTIFY_OK; } -void init_workqueues(void) +void __init init_workqueues(void) { + cpu_populated_map = cpu_online_map; singlethread_cpu = first_cpu(cpu_possible_map); + cpu_singlethread_map = cpumask_of_cpu(singlethread_cpu); hotcpu_notifier(workqueue_cpu_callback, 0); keventd_wq = create_workqueue("events"); BUG_ON(!keventd_wq); } - diff --git a/lib/radix-tree.c b/lib/radix-tree.c index d69ddbe43865..402eb4eb6b23 100644 --- a/lib/radix-tree.c +++ b/lib/radix-tree.c @@ -1004,7 +1004,7 @@ static int radix_tree_callback(struct notifier_block *nfb, struct radix_tree_preload *rtp; /* Free per-cpu pool of perloaded nodes */ - if (action == CPU_DEAD) { + if (action == CPU_DEAD || action == CPU_DEAD_FROZEN) { rtp = &per_cpu(radix_tree_preloads, cpu); while (rtp->nr) { kmem_cache_free(radix_tree_node_cachep, diff --git a/mm/filemap.c b/mm/filemap.c index 9cbf4fea4a59..9e56fd158fa3 100644 --- a/mm/filemap.c +++ b/mm/filemap.c @@ -750,6 +750,7 @@ unsigned find_get_pages_contig(struct address_space *mapping, pgoff_t index, read_unlock_irq(&mapping->tree_lock); return i; } +EXPORT_SYMBOL(find_get_pages_contig); /** * find_get_pages_tag - find and return pages that match @tag @@ -778,6 +779,7 @@ unsigned find_get_pages_tag(struct address_space *mapping, pgoff_t *index, read_unlock_irq(&mapping->tree_lock); return ret; } +EXPORT_SYMBOL(find_get_pages_tag); /** * grab_cache_page_nowait - returns locked page at given index in given cache diff --git a/mm/filemap_xip.c b/mm/filemap_xip.c index cbb335813ec0..1b49dab9b25d 100644 --- a/mm/filemap_xip.c +++ b/mm/filemap_xip.c @@ -434,7 +434,6 @@ xip_truncate_page(struct address_space *mapping, loff_t from) unsigned blocksize; unsigned length; struct page *page; - void *kaddr; BUG_ON(!mapping->a_ops->get_xip_page); @@ -458,11 +457,7 @@ xip_truncate_page(struct address_space *mapping, loff_t from) else return PTR_ERR(page); } - kaddr = kmap_atomic(page, KM_USER0); - memset(kaddr + offset, 0, length); - kunmap_atomic(kaddr, KM_USER0); - - flush_dcache_page(page); + zero_user_page(page, offset, length, KM_USER0); return 0; } EXPORT_SYMBOL_GPL(xip_truncate_page); diff --git a/mm/hugetlb.c b/mm/hugetlb.c index 36db012b38dd..eb7180db3033 100644 --- a/mm/hugetlb.c +++ b/mm/hugetlb.c @@ -140,6 +140,8 @@ static struct page *alloc_huge_page(struct vm_area_struct *vma, return page; fail: + if (vma->vm_flags & VM_MAYSHARE) + resv_huge_pages++; spin_unlock(&hugetlb_lock); return NULL; } @@ -172,6 +174,17 @@ static int __init hugetlb_setup(char *s) } __setup("hugepages=", hugetlb_setup); +static unsigned int cpuset_mems_nr(unsigned int *array) +{ + int node; + unsigned int nr = 0; + + for_each_node_mask(node, cpuset_current_mems_allowed) + nr += array[node]; + + return nr; +} + #ifdef CONFIG_SYSCTL static void update_and_free_page(struct page *page) { @@ -817,6 +830,26 @@ int hugetlb_reserve_pages(struct inode *inode, long from, long to) chg = region_chg(&inode->i_mapping->private_list, from, to); if (chg < 0) return chg; + /* + * When cpuset is configured, it breaks the strict hugetlb page + * reservation as the accounting is done on a global variable. Such + * reservation is completely rubbish in the presence of cpuset because + * the reservation is not checked against page availability for the + * current cpuset. Application can still potentially OOM'ed by kernel + * with lack of free htlb page in cpuset that the task is in. + * Attempt to enforce strict accounting with cpuset is almost + * impossible (or too ugly) because cpuset is too fluid that + * task or memory node can be dynamically moved between cpusets. + * + * The change of semantics for shared hugetlb mapping with cpuset is + * undesirable. However, in order to preserve some of the semantics, + * we fall back to check against current free page availability as + * a best attempt and hopefully to minimize the impact of changing + * semantics that cpuset has. + */ + if (chg > cpuset_mems_nr(free_huge_pages_node)) + return -ENOMEM; + ret = hugetlb_acct_memory(chg); if (ret < 0) return ret; diff --git a/mm/mmap.c b/mm/mmap.c index cc1f543eb1b8..68b9ad2ef1d6 100644 --- a/mm/mmap.c +++ b/mm/mmap.c @@ -1720,7 +1720,7 @@ detach_vmas_to_be_unmapped(struct mm_struct *mm, struct vm_area_struct *vma, /* * Split a vma into two pieces at address 'addr', a new vma is allocated - * either for the first part or the the tail. + * either for the first part or the tail. */ int split_vma(struct mm_struct * mm, struct vm_area_struct * vma, unsigned long addr, int new_below) diff --git a/mm/page_alloc.c b/mm/page_alloc.c index 6fd0b7455b0b..f9b5d6d5f4d6 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -691,43 +691,26 @@ static void __init setup_nr_node_ids(void) {} #ifdef CONFIG_NUMA /* - * Called from the slab reaper to drain pagesets on a particular node that - * belongs to the currently executing processor. + * Called from the vmstat counter updater to drain pagesets of this + * currently executing processor on remote nodes after they have + * expired. + * * Note that this function must be called with the thread pinned to * a single processor. */ -void drain_node_pages(int nodeid) +void drain_zone_pages(struct zone *zone, struct per_cpu_pages *pcp) { - int i; - enum zone_type z; unsigned long flags; + int to_drain; - for (z = 0; z < MAX_NR_ZONES; z++) { - struct zone *zone = NODE_DATA(nodeid)->node_zones + z; - struct per_cpu_pageset *pset; - - if (!populated_zone(zone)) - continue; - - pset = zone_pcp(zone, smp_processor_id()); - for (i = 0; i < ARRAY_SIZE(pset->pcp); i++) { - struct per_cpu_pages *pcp; - - pcp = &pset->pcp[i]; - if (pcp->count) { - int to_drain; - - local_irq_save(flags); - if (pcp->count >= pcp->batch) - to_drain = pcp->batch; - else - to_drain = pcp->count; - free_pages_bulk(zone, to_drain, &pcp->list, 0); - pcp->count -= to_drain; - local_irq_restore(flags); - } - } - } + local_irq_save(flags); + if (pcp->count >= pcp->batch) + to_drain = pcp->batch; + else + to_drain = pcp->count; + free_pages_bulk(zone, to_drain, &pcp->list, 0); + pcp->count -= to_drain; + local_irq_restore(flags); } #endif @@ -2148,11 +2131,14 @@ static int __cpuinit pageset_cpuup_callback(struct notifier_block *nfb, switch (action) { case CPU_UP_PREPARE: + case CPU_UP_PREPARE_FROZEN: if (process_zones(cpu)) ret = NOTIFY_BAD; break; case CPU_UP_CANCELED: + case CPU_UP_CANCELED_FROZEN: case CPU_DEAD: + case CPU_DEAD_FROZEN: free_zone_pagesets(cpu); break; default: @@ -3012,7 +2998,7 @@ static int page_alloc_cpu_notify(struct notifier_block *self, { int cpu = (unsigned long)hcpu; - if (action == CPU_DEAD) { + if (action == CPU_DEAD || action == CPU_DEAD_FROZEN) { local_irq_disable(); __drain_pages(cpu); vm_events_fold_cpu(cpu); diff --git a/mm/slab.c b/mm/slab.c index acda7e2d66e4..944b20581f8c 100644 --- a/mm/slab.c +++ b/mm/slab.c @@ -928,12 +928,6 @@ static void next_reap_node(void) { int node = __get_cpu_var(reap_node); - /* - * Also drain per cpu pages on remote zones - */ - if (node != numa_node_id()) - drain_node_pages(node); - node = next_node(node, node_online_map); if (unlikely(node >= MAX_NUMNODES)) node = first_node(node_online_map); @@ -1186,8 +1180,11 @@ static int __cpuinit cpuup_callback(struct notifier_block *nfb, int memsize = sizeof(struct kmem_list3); switch (action) { - case CPU_UP_PREPARE: + case CPU_LOCK_ACQUIRE: mutex_lock(&cache_chain_mutex); + break; + case CPU_UP_PREPARE: + case CPU_UP_PREPARE_FROZEN: /* * We need to do this right in the beginning since * alloc_arraycache's are going to use this list. @@ -1274,17 +1271,28 @@ static int __cpuinit cpuup_callback(struct notifier_block *nfb, } break; case CPU_ONLINE: - mutex_unlock(&cache_chain_mutex); + case CPU_ONLINE_FROZEN: start_cpu_timer(cpu); break; #ifdef CONFIG_HOTPLUG_CPU - case CPU_DOWN_PREPARE: - mutex_lock(&cache_chain_mutex); - break; - case CPU_DOWN_FAILED: - mutex_unlock(&cache_chain_mutex); - break; + case CPU_DOWN_PREPARE: + case CPU_DOWN_PREPARE_FROZEN: + /* + * Shutdown cache reaper. Note that the cache_chain_mutex is + * held so that if cache_reap() is invoked it cannot do + * anything expensive but will only modify reap_work + * and reschedule the timer. + */ + cancel_rearming_delayed_work(&per_cpu(reap_work, cpu)); + /* Now the cache_reaper is guaranteed to be not running. */ + per_cpu(reap_work, cpu).work.func = NULL; + break; + case CPU_DOWN_FAILED: + case CPU_DOWN_FAILED_FROZEN: + start_cpu_timer(cpu); + break; case CPU_DEAD: + case CPU_DEAD_FROZEN: /* * Even if all the cpus of a node are down, we don't free the * kmem_list3 of any cache. This to avoid a race between @@ -1296,6 +1304,7 @@ static int __cpuinit cpuup_callback(struct notifier_block *nfb, /* fall thru */ #endif case CPU_UP_CANCELED: + case CPU_UP_CANCELED_FROZEN: list_for_each_entry(cachep, &cache_chain, next) { struct array_cache *nc; struct array_cache *shared; @@ -1354,6 +1363,8 @@ free_array_cache: continue; drain_freelist(cachep, l3, l3->free_objects); } + break; + case CPU_LOCK_RELEASE: mutex_unlock(&cache_chain_mutex); break; } @@ -3742,7 +3753,6 @@ EXPORT_SYMBOL(__kmalloc); /** * krealloc - reallocate memory. The contents will remain unchanged. - * * @p: object to reallocate memory for. * @new_size: how many bytes of memory are required. * @flags: the type of memory to allocate. @@ -4140,7 +4150,6 @@ next: check_irq_on(); mutex_unlock(&cache_chain_mutex); next_reap_node(); - refresh_cpu_vm_stats(smp_processor_id()); out: /* Set up the next iteration */ schedule_delayed_work(work, round_jiffies_relative(REAPTIMEOUT_CPUC)); diff --git a/mm/slub.c b/mm/slub.c index 5db3da5a60bf..bd2efae02bcd 100644 --- a/mm/slub.c +++ b/mm/slub.c @@ -66,11 +66,11 @@ * SLUB assigns one slab for allocation to each processor. * Allocations only occur from these slabs called cpu slabs. * - * Slabs with free elements are kept on a partial list. - * There is no list for full slabs. If an object in a full slab is + * Slabs with free elements are kept on a partial list and during regular + * operations no list for full slabs is used. If an object in a full slab is * freed then the slab will show up again on the partial lists. - * Otherwise there is no need to track full slabs unless we have to - * track full slabs for debugging purposes. + * We track full slabs for debugging purposes though because otherwise we + * cannot scan all objects. * * Slabs are freed when they become empty. Teardown and setup is * minimal so we rely on the page allocators per cpu caches for @@ -87,13 +87,36 @@ * the fast path. */ +static inline int SlabDebug(struct page *page) +{ +#ifdef CONFIG_SLUB_DEBUG + return PageError(page); +#else + return 0; +#endif +} + +static inline void SetSlabDebug(struct page *page) +{ +#ifdef CONFIG_SLUB_DEBUG + SetPageError(page); +#endif +} + +static inline void ClearSlabDebug(struct page *page) +{ +#ifdef CONFIG_SLUB_DEBUG + ClearPageError(page); +#endif +} + /* * Issues still to be resolved: * * - The per cpu array is updated for each new slab and and is a remote * cacheline for most nodes. This could become a bouncing cacheline given - * enough frequent updates. There are 16 pointers in a cacheline.so at - * max 16 cpus could compete. Likely okay. + * enough frequent updates. There are 16 pointers in a cacheline, so at + * max 16 cpus could compete for the cacheline which may be okay. * * - Support PAGE_ALLOC_DEBUG. Should be easy to do. * @@ -137,6 +160,7 @@ #define DEBUG_DEFAULT_FLAGS (SLAB_DEBUG_FREE | SLAB_RED_ZONE | \ SLAB_POISON | SLAB_STORE_USER) + /* * Set of flags that will prevent slab merging */ @@ -157,6 +181,11 @@ /* Internal SLUB flags */ #define __OBJECT_POISON 0x80000000 /* Poison object */ +/* Not all arches define cache_line_size */ +#ifndef cache_line_size +#define cache_line_size() L1_CACHE_BYTES +#endif + static int kmem_size = sizeof(struct kmem_cache); #ifdef CONFIG_SMP @@ -166,7 +195,7 @@ static struct notifier_block slab_notifier; static enum { DOWN, /* No slab functionality available */ PARTIAL, /* kmem_cache_open() works but kmalloc does not */ - UP, /* Everything works */ + UP, /* Everything works but does not show up in sysfs */ SYSFS /* Sysfs up */ } slab_state = DOWN; @@ -174,7 +203,19 @@ static enum { static DECLARE_RWSEM(slub_lock); LIST_HEAD(slab_caches); -#ifdef CONFIG_SYSFS +/* + * Tracking user of a slab. + */ +struct track { + void *addr; /* Called from address */ + int cpu; /* Was running on cpu */ + int pid; /* Pid context */ + unsigned long when; /* When did the operation occur */ +}; + +enum track_item { TRACK_ALLOC, TRACK_FREE }; + +#if defined(CONFIG_SYSFS) && defined(CONFIG_SLUB_DEBUG) static int sysfs_slab_add(struct kmem_cache *); static int sysfs_slab_alias(struct kmem_cache *, const char *); static void sysfs_slab_remove(struct kmem_cache *); @@ -202,6 +243,63 @@ static inline struct kmem_cache_node *get_node(struct kmem_cache *s, int node) #endif } +static inline int check_valid_pointer(struct kmem_cache *s, + struct page *page, const void *object) +{ + void *base; + + if (!object) + return 1; + + base = page_address(page); + if (object < base || object >= base + s->objects * s->size || + (object - base) % s->size) { + return 0; + } + + return 1; +} + +/* + * Slow version of get and set free pointer. + * + * This version requires touching the cache lines of kmem_cache which + * we avoid to do in the fast alloc free paths. There we obtain the offset + * from the page struct. + */ +static inline void *get_freepointer(struct kmem_cache *s, void *object) +{ + return *(void **)(object + s->offset); +} + +static inline void set_freepointer(struct kmem_cache *s, void *object, void *fp) +{ + *(void **)(object + s->offset) = fp; +} + +/* Loop over all objects in a slab */ +#define for_each_object(__p, __s, __addr) \ + for (__p = (__addr); __p < (__addr) + (__s)->objects * (__s)->size;\ + __p += (__s)->size) + +/* Scan freelist */ +#define for_each_free_object(__p, __s, __free) \ + for (__p = (__free); __p; __p = get_freepointer((__s), __p)) + +/* Determine object index from a given position */ +static inline int slab_index(void *p, struct kmem_cache *s, void *addr) +{ + return (p - addr) / s->size; +} + +#ifdef CONFIG_SLUB_DEBUG +/* + * Debug settings: + */ +static int slub_debug; + +static char *slub_debug_slabs; + /* * Object debugging */ @@ -237,35 +335,6 @@ static void print_section(char *text, u8 *addr, unsigned int length) } } -/* - * Slow version of get and set free pointer. - * - * This requires touching the cache lines of kmem_cache. - * The offset can also be obtained from the page. In that - * case it is in the cacheline that we already need to touch. - */ -static void *get_freepointer(struct kmem_cache *s, void *object) -{ - return *(void **)(object + s->offset); -} - -static void set_freepointer(struct kmem_cache *s, void *object, void *fp) -{ - *(void **)(object + s->offset) = fp; -} - -/* - * Tracking user of a slab. - */ -struct track { - void *addr; /* Called from address */ - int cpu; /* Was running on cpu */ - int pid; /* Pid context */ - unsigned long when; /* When did the operation occur */ -}; - -enum track_item { TRACK_ALLOC, TRACK_FREE }; - static struct track *get_track(struct kmem_cache *s, void *object, enum track_item alloc) { @@ -400,24 +469,6 @@ static int check_bytes(u8 *start, unsigned int value, unsigned int bytes) return 1; } - -static int check_valid_pointer(struct kmem_cache *s, struct page *page, - void *object) -{ - void *base; - - if (!object) - return 1; - - base = page_address(page); - if (object < base || object >= base + s->objects * s->size || - (object - base) % s->size) { - return 0; - } - - return 1; -} - /* * Object layout: * @@ -425,26 +476,34 @@ static int check_valid_pointer(struct kmem_cache *s, struct page *page, * Bytes of the object to be managed. * If the freepointer may overlay the object then the free * pointer is the first word of the object. + * * Poisoning uses 0x6b (POISON_FREE) and the last byte is * 0xa5 (POISON_END) * * object + s->objsize * Padding to reach word boundary. This is also used for Redzoning. - * Padding is extended to word size if Redzoning is enabled - * and objsize == inuse. + * Padding is extended by another word if Redzoning is enabled and + * objsize == inuse. + * * We fill with 0xbb (RED_INACTIVE) for inactive objects and with * 0xcc (RED_ACTIVE) for objects in use. * * object + s->inuse + * Meta data starts here. + * * A. Free pointer (if we cannot overwrite object on free) * B. Tracking data for SLAB_STORE_USER - * C. Padding to reach required alignment boundary - * Padding is done using 0x5a (POISON_INUSE) + * C. Padding to reach required alignment boundary or at mininum + * one word if debuggin is on to be able to detect writes + * before the word boundary. + * + * Padding is done using 0x5a (POISON_INUSE) * * object + s->size + * Nothing is used beyond s->size. * - * If slabcaches are merged then the objsize and inuse boundaries are to - * be ignored. And therefore no slab options that rely on these boundaries + * If slabcaches are merged then the objsize and inuse boundaries are mostly + * ignored. And therefore no slab options that rely on these boundaries * may be used with merged slabcaches. */ @@ -570,8 +629,7 @@ static int check_object(struct kmem_cache *s, struct page *page, /* * No choice but to zap it and thus loose the remainder * of the free objects in this slab. May cause - * another error because the object count maybe - * wrong now. + * another error because the object count is now wrong. */ set_freepointer(s, p, NULL); return 0; @@ -611,9 +669,8 @@ static int check_slab(struct kmem_cache *s, struct page *page) } /* - * Determine if a certain object on a page is on the freelist and - * therefore free. Must hold the slab lock for cpu slabs to - * guarantee that the chains are consistent. + * Determine if a certain object on a page is on the freelist. Must hold the + * slab lock to guarantee that the chains are in a consistent state. */ static int on_freelist(struct kmem_cache *s, struct page *page, void *search) { @@ -659,7 +716,7 @@ static int on_freelist(struct kmem_cache *s, struct page *page, void *search) } /* - * Tracking of fully allocated slabs for debugging + * Tracking of fully allocated slabs for debugging purposes. */ static void add_full(struct kmem_cache_node *n, struct page *page) { @@ -710,7 +767,7 @@ bad: /* * If this is a slab page then lets do the best we can * to avoid issues in the future. Marking all objects - * as used avoids touching the remainder. + * as used avoids touching the remaining objects. */ printk(KERN_ERR "@@@ SLUB: %s slab 0x%p. Marking all objects used.\n", s->name, page); @@ -764,6 +821,113 @@ fail: return 0; } +static void trace(struct kmem_cache *s, struct page *page, void *object, int alloc) +{ + if (s->flags & SLAB_TRACE) { + printk(KERN_INFO "TRACE %s %s 0x%p inuse=%d fp=0x%p\n", + s->name, + alloc ? "alloc" : "free", + object, page->inuse, + page->freelist); + + if (!alloc) + print_section("Object", (void *)object, s->objsize); + + dump_stack(); + } +} + +static int __init setup_slub_debug(char *str) +{ + if (!str || *str != '=') + slub_debug = DEBUG_DEFAULT_FLAGS; + else { + str++; + if (*str == 0 || *str == ',') + slub_debug = DEBUG_DEFAULT_FLAGS; + else + for( ;*str && *str != ','; str++) + switch (*str) { + case 'f' : case 'F' : + slub_debug |= SLAB_DEBUG_FREE; + break; + case 'z' : case 'Z' : + slub_debug |= SLAB_RED_ZONE; + break; + case 'p' : case 'P' : + slub_debug |= SLAB_POISON; + break; + case 'u' : case 'U' : + slub_debug |= SLAB_STORE_USER; + break; + case 't' : case 'T' : + slub_debug |= SLAB_TRACE; + break; + default: + printk(KERN_ERR "slub_debug option '%c' " + "unknown. skipped\n",*str); + } + } + + if (*str == ',') + slub_debug_slabs = str + 1; + return 1; +} + +__setup("slub_debug", setup_slub_debug); + +static void kmem_cache_open_debug_check(struct kmem_cache *s) +{ + /* + * The page->offset field is only 16 bit wide. This is an offset + * in units of words from the beginning of an object. If the slab + * size is bigger then we cannot move the free pointer behind the + * object anymore. + * + * On 32 bit platforms the limit is 256k. On 64bit platforms + * the limit is 512k. + * + * Debugging or ctor/dtors may create a need to move the free + * pointer. Fail if this happens. + */ + if (s->size >= 65535 * sizeof(void *)) { + BUG_ON(s->flags & (SLAB_RED_ZONE | SLAB_POISON | + SLAB_STORE_USER | SLAB_DESTROY_BY_RCU)); + BUG_ON(s->ctor || s->dtor); + } + else + /* + * Enable debugging if selected on the kernel commandline. + */ + if (slub_debug && (!slub_debug_slabs || + strncmp(slub_debug_slabs, s->name, + strlen(slub_debug_slabs)) == 0)) + s->flags |= slub_debug; +} +#else + +static inline int alloc_object_checks(struct kmem_cache *s, + struct page *page, void *object) { return 0; } + +static inline int free_object_checks(struct kmem_cache *s, + struct page *page, void *object) { return 0; } + +static inline void add_full(struct kmem_cache_node *n, struct page *page) {} +static inline void remove_full(struct kmem_cache *s, struct page *page) {} +static inline void trace(struct kmem_cache *s, struct page *page, + void *object, int alloc) {} +static inline void init_object(struct kmem_cache *s, + void *object, int active) {} +static inline void init_tracking(struct kmem_cache *s, void *object) {} +static inline int slab_pad_check(struct kmem_cache *s, struct page *page) + { return 1; } +static inline int check_object(struct kmem_cache *s, struct page *page, + void *object, int active) { return 1; } +static inline void set_track(struct kmem_cache *s, void *object, + enum track_item alloc, void *addr) {} +static inline void kmem_cache_open_debug_check(struct kmem_cache *s) {} +#define slub_debug 0 +#endif /* * Slab allocation and freeing */ @@ -797,7 +961,7 @@ static struct page *allocate_slab(struct kmem_cache *s, gfp_t flags, int node) static void setup_object(struct kmem_cache *s, struct page *page, void *object) { - if (PageError(page)) { + if (SlabDebug(page)) { init_object(s, object, 0); init_tracking(s, object); } @@ -832,7 +996,7 @@ static struct page *new_slab(struct kmem_cache *s, gfp_t flags, int node) page->flags |= 1 << PG_slab; if (s->flags & (SLAB_DEBUG_FREE | SLAB_RED_ZONE | SLAB_POISON | SLAB_STORE_USER | SLAB_TRACE)) - page->flags |= 1 << PG_error; + SetSlabDebug(page); start = page_address(page); end = start + s->objects * s->size; @@ -841,7 +1005,7 @@ static struct page *new_slab(struct kmem_cache *s, gfp_t flags, int node) memset(start, POISON_INUSE, PAGE_SIZE << s->order); last = start; - for (p = start + s->size; p < end; p += s->size) { + for_each_object(p, s, start) { setup_object(s, page, last); set_freepointer(s, last, p); last = p; @@ -861,13 +1025,11 @@ static void __free_slab(struct kmem_cache *s, struct page *page) { int pages = 1 << s->order; - if (unlikely(PageError(page) || s->dtor)) { - void *start = page_address(page); - void *end = start + (pages << PAGE_SHIFT); + if (unlikely(SlabDebug(page) || s->dtor)) { void *p; slab_pad_check(s, page); - for (p = start; p <= end - s->size; p += s->size) { + for_each_object(p, s, page_address(page)) { if (s->dtor) s->dtor(p, s, 0); check_object(s, page, p, 0); @@ -910,7 +1072,8 @@ static void discard_slab(struct kmem_cache *s, struct page *page) atomic_long_dec(&n->nr_slabs); reset_page_mapcount(page); - page->flags &= ~(1 << PG_slab | 1 << PG_error); + ClearSlabDebug(page); + __ClearPageSlab(page); free_slab(s, page); } @@ -966,9 +1129,9 @@ static void remove_partial(struct kmem_cache *s, } /* - * Lock page and remove it from the partial list + * Lock slab and remove from the partial list. * - * Must hold list_lock + * Must hold list_lock. */ static int lock_and_del_slab(struct kmem_cache_node *n, struct page *page) { @@ -981,7 +1144,7 @@ static int lock_and_del_slab(struct kmem_cache_node *n, struct page *page) } /* - * Try to get a partial slab from a specific node + * Try to allocate a partial slab from a specific node. */ static struct page *get_partial_node(struct kmem_cache_node *n) { @@ -990,7 +1153,8 @@ static struct page *get_partial_node(struct kmem_cache_node *n) /* * Racy check. If we mistakenly see no partial slabs then we * just allocate an empty slab. If we mistakenly try to get a - * partial slab then get_partials() will return NULL. + * partial slab and there is none available then get_partials() + * will return NULL. */ if (!n || !n->nr_partial) return NULL; @@ -1006,8 +1170,7 @@ out: } /* - * Get a page from somewhere. Search in increasing NUMA - * distances. + * Get a page from somewhere. Search in increasing NUMA distances. */ static struct page *get_any_partial(struct kmem_cache *s, gfp_t flags) { @@ -1017,24 +1180,22 @@ static struct page *get_any_partial(struct kmem_cache *s, gfp_t flags) struct page *page; /* - * The defrag ratio allows to configure the tradeoffs between - * inter node defragmentation and node local allocations. - * A lower defrag_ratio increases the tendency to do local - * allocations instead of scanning throught the partial - * lists on other nodes. - * - * If defrag_ratio is set to 0 then kmalloc() always - * returns node local objects. If its higher then kmalloc() - * may return off node objects in order to avoid fragmentation. + * The defrag ratio allows a configuration of the tradeoffs between + * inter node defragmentation and node local allocations. A lower + * defrag_ratio increases the tendency to do local allocations + * instead of attempting to obtain partial slabs from other nodes. * - * A higher ratio means slabs may be taken from other nodes - * thus reducing the number of partial slabs on those nodes. + * If the defrag_ratio is set to 0 then kmalloc() always + * returns node local objects. If the ratio is higher then kmalloc() + * may return off node objects because partial slabs are obtained + * from other nodes and filled up. * * If /sys/slab/xx/defrag_ratio is set to 100 (which makes - * defrag_ratio = 1000) then every (well almost) allocation - * will first attempt to defrag slab caches on other nodes. This - * means scanning over all nodes to look for partial slabs which - * may be a bit expensive to do on every slab allocation. + * defrag_ratio = 1000) then every (well almost) allocation will + * first attempt to defrag slab caches on other nodes. This means + * scanning over all nodes to look for partial slabs which may be + * expensive if we do it every time we are trying to find a slab + * with available objects. */ if (!s->defrag_ratio || get_cycles() % 1024 > s->defrag_ratio) return NULL; @@ -1087,18 +1248,19 @@ static void putback_slab(struct kmem_cache *s, struct page *page) if (page->freelist) add_partial(n, page); - else if (PageError(page) && (s->flags & SLAB_STORE_USER)) + else if (SlabDebug(page) && (s->flags & SLAB_STORE_USER)) add_full(n, page); slab_unlock(page); } else { if (n->nr_partial < MIN_PARTIAL) { /* - * Adding an empty page to the partial slabs in order - * to avoid page allocator overhead. This page needs to - * come after all the others that are not fully empty - * in order to make sure that we do maximum - * defragmentation. + * Adding an empty slab to the partial slabs in order + * to avoid page allocator overhead. This slab needs + * to come after the other slabs with objects in + * order to fill them up. That way the size of the + * partial list stays small. kmem_cache_shrink can + * reclaim empty slabs from the partial list. */ add_partial_tail(n, page); slab_unlock(page); @@ -1166,11 +1328,11 @@ static void flush_all(struct kmem_cache *s) * 1. The page struct * 2. The first cacheline of the object to be allocated. * - * The only cache lines that are read (apart from code) is the + * The only other cache lines that are read (apart from code) is the * per cpu array in the kmem_cache struct. * * Fastpath is not possible if we need to get a new slab or have - * debugging enabled (which means all slabs are marked with PageError) + * debugging enabled (which means all slabs are marked with SlabDebug) */ static void *slab_alloc(struct kmem_cache *s, gfp_t gfpflags, int node, void *addr) @@ -1193,7 +1355,7 @@ redo: object = page->freelist; if (unlikely(!object)) goto another_slab; - if (unlikely(PageError(page))) + if (unlikely(SlabDebug(page))) goto debug; have_object: @@ -1220,9 +1382,11 @@ have_slab: cpu = smp_processor_id(); if (s->cpu_slab[cpu]) { /* - * Someone else populated the cpu_slab while we enabled - * interrupts, or we have got scheduled on another cpu. - * The page may not be on the requested node. + * Someone else populated the cpu_slab while we + * enabled interrupts, or we have gotten scheduled + * on another cpu. The page may not be on the + * requested node even if __GFP_THISNODE was + * specified. So we need to recheck. */ if (node == -1 || page_to_nid(s->cpu_slab[cpu]) == node) { @@ -1235,7 +1399,7 @@ have_slab: slab_lock(page); goto redo; } - /* Dump the current slab */ + /* New slab does not fit our expectations */ flush_slab(s, s->cpu_slab[cpu], cpu); } slab_lock(page); @@ -1248,12 +1412,7 @@ debug: goto another_slab; if (s->flags & SLAB_STORE_USER) set_track(s, object, TRACK_ALLOC, addr); - if (s->flags & SLAB_TRACE) { - printk(KERN_INFO "TRACE %s alloc 0x%p inuse=%d fp=0x%p\n", - s->name, object, page->inuse, - page->freelist); - dump_stack(); - } + trace(s, page, object, 1); init_object(s, object, 1); goto have_object; } @@ -1276,7 +1435,8 @@ EXPORT_SYMBOL(kmem_cache_alloc_node); * The fastpath only writes the cacheline of the page struct and the first * cacheline of the object. * - * No special cachelines need to be read + * We read the cpu_slab cacheline to check if the slab is the per cpu + * slab for this processor. */ static void slab_free(struct kmem_cache *s, struct page *page, void *x, void *addr) @@ -1288,7 +1448,7 @@ static void slab_free(struct kmem_cache *s, struct page *page, local_irq_save(flags); slab_lock(page); - if (unlikely(PageError(page))) + if (unlikely(SlabDebug(page))) goto debug; checks_ok: prior = object[page->offset] = page->freelist; @@ -1321,7 +1481,7 @@ out_unlock: slab_empty: if (prior) /* - * Slab on the partial list. + * Slab still on the partial list. */ remove_partial(s, page); @@ -1337,13 +1497,7 @@ debug: remove_full(s, page); if (s->flags & SLAB_STORE_USER) set_track(s, x, TRACK_FREE, addr); - if (s->flags & SLAB_TRACE) { - printk(KERN_INFO "TRACE %s free 0x%p inuse=%d fp=0x%p\n", - s->name, object, page->inuse, - page->freelist); - print_section("Object", (void *)object, s->objsize); - dump_stack(); - } + trace(s, page, object, 0); init_object(s, object, 0); goto checks_ok; } @@ -1370,22 +1524,16 @@ static struct page *get_object_page(const void *x) } /* - * kmem_cache_open produces objects aligned at "size" and the first object - * is placed at offset 0 in the slab (We have no metainformation on the - * slab, all slabs are in essence "off slab"). - * - * In order to get the desired alignment one just needs to align the - * size. + * Object placement in a slab is made very easy because we always start at + * offset 0. If we tune the size of the object to the alignment then we can + * get the required alignment by putting one properly sized object after + * another. * * Notice that the allocation order determines the sizes of the per cpu * caches. Each processor has always one slab available for allocations. * Increasing the allocation order reduces the number of times that slabs - * must be moved on and off the partial lists and therefore may influence + * must be moved on and off the partial lists and is therefore a factor in * locking overhead. - * - * The offset is used to relocate the free list link in each object. It is - * therefore possible to move the free list link behind the object. This - * is necessary for RCU to work properly and also useful for debugging. */ /* @@ -1396,76 +1544,110 @@ static struct page *get_object_page(const void *x) */ static int slub_min_order; static int slub_max_order = DEFAULT_MAX_ORDER; - -/* - * Minimum number of objects per slab. This is necessary in order to - * reduce locking overhead. Similar to the queue size in SLAB. - */ static int slub_min_objects = DEFAULT_MIN_OBJECTS; /* * Merge control. If this is set then no merging of slab caches will occur. + * (Could be removed. This was introduced to pacify the merge skeptics.) */ static int slub_nomerge; /* - * Debug settings: - */ -static int slub_debug; - -static char *slub_debug_slabs; - -/* * Calculate the order of allocation given an slab object size. * - * The order of allocation has significant impact on other elements - * of the system. Generally order 0 allocations should be preferred - * since they do not cause fragmentation in the page allocator. Larger - * objects may have problems with order 0 because there may be too much - * space left unused in a slab. We go to a higher order if more than 1/8th - * of the slab would be wasted. + * The order of allocation has significant impact on performance and other + * system components. Generally order 0 allocations should be preferred since + * order 0 does not cause fragmentation in the page allocator. Larger objects + * be problematic to put into order 0 slabs because there may be too much + * unused space left. We go to a higher order if more than 1/8th of the slab + * would be wasted. * - * In order to reach satisfactory performance we must ensure that - * a minimum number of objects is in one slab. Otherwise we may - * generate too much activity on the partial lists. This is less a - * concern for large slabs though. slub_max_order specifies the order - * where we begin to stop considering the number of objects in a slab. + * In order to reach satisfactory performance we must ensure that a minimum + * number of objects is in one slab. Otherwise we may generate too much + * activity on the partial lists which requires taking the list_lock. This is + * less a concern for large slabs though which are rarely used. * - * Higher order allocations also allow the placement of more objects - * in a slab and thereby reduce object handling overhead. If the user - * has requested a higher mininum order then we start with that one - * instead of zero. + * slub_max_order specifies the order where we begin to stop considering the + * number of objects in a slab as critical. If we reach slub_max_order then + * we try to keep the page order as low as possible. So we accept more waste + * of space in favor of a small page order. + * + * Higher order allocations also allow the placement of more objects in a + * slab and thereby reduce object handling overhead. If the user has + * requested a higher mininum order then we start with that one instead of + * the smallest order which will fit the object. */ -static int calculate_order(int size) +static inline int slab_order(int size, int min_objects, + int max_order, int fract_leftover) { int order; int rem; - for (order = max(slub_min_order, fls(size - 1) - PAGE_SHIFT); - order < MAX_ORDER; order++) { - unsigned long slab_size = PAGE_SIZE << order; + for (order = max(slub_min_order, + fls(min_objects * size - 1) - PAGE_SHIFT); + order <= max_order; order++) { - if (slub_max_order > order && - slab_size < slub_min_objects * size) - continue; + unsigned long slab_size = PAGE_SIZE << order; - if (slab_size < size) + if (slab_size < min_objects * size) continue; rem = slab_size % size; - if (rem <= (PAGE_SIZE << order) / 8) + if (rem <= slab_size / fract_leftover) break; } - if (order >= MAX_ORDER) - return -E2BIG; + return order; } +static inline int calculate_order(int size) +{ + int order; + int min_objects; + int fraction; + + /* + * Attempt to find best configuration for a slab. This + * works by first attempting to generate a layout with + * the best configuration and backing off gradually. + * + * First we reduce the acceptable waste in a slab. Then + * we reduce the minimum objects required in a slab. + */ + min_objects = slub_min_objects; + while (min_objects > 1) { + fraction = 8; + while (fraction >= 4) { + order = slab_order(size, min_objects, + slub_max_order, fraction); + if (order <= slub_max_order) + return order; + fraction /= 2; + } + min_objects /= 2; + } + + /* + * We were unable to place multiple objects in a slab. Now + * lets see if we can place a single object there. + */ + order = slab_order(size, 1, slub_max_order, 1); + if (order <= slub_max_order) + return order; + + /* + * Doh this slab cannot be placed using slub_max_order. + */ + order = slab_order(size, 1, MAX_ORDER, 1); + if (order <= MAX_ORDER) + return order; + return -ENOSYS; +} + /* - * Function to figure out which alignment to use from the - * various ways of specifying it. + * Figure out what the alignment of the objects will be. */ static unsigned long calculate_alignment(unsigned long flags, unsigned long align, unsigned long size) @@ -1480,8 +1662,8 @@ static unsigned long calculate_alignment(unsigned long flags, * then use it. */ if ((flags & SLAB_HWCACHE_ALIGN) && - size > L1_CACHE_BYTES / 2) - return max_t(unsigned long, align, L1_CACHE_BYTES); + size > cache_line_size() / 2) + return max_t(unsigned long, align, cache_line_size()); if (align < ARCH_SLAB_MINALIGN) return ARCH_SLAB_MINALIGN; @@ -1619,22 +1801,23 @@ static int calculate_sizes(struct kmem_cache *s) */ size = ALIGN(size, sizeof(void *)); +#ifdef CONFIG_SLUB_DEBUG /* - * If we are redzoning then check if there is some space between the + * If we are Redzoning then check if there is some space between the * end of the object and the free pointer. If not then add an - * additional word, so that we can establish a redzone between - * the object and the freepointer to be able to check for overwrites. + * additional word to have some bytes to store Redzone information. */ if ((flags & SLAB_RED_ZONE) && size == s->objsize) size += sizeof(void *); +#endif /* - * With that we have determined how much of the slab is in actual - * use by the object. This is the potential offset to the free - * pointer. + * With that we have determined the number of bytes in actual use + * by the object. This is the potential offset to the free pointer. */ s->inuse = size; +#ifdef CONFIG_SLUB_DEBUG if (((flags & (SLAB_DESTROY_BY_RCU | SLAB_POISON)) || s->ctor || s->dtor)) { /* @@ -1656,7 +1839,7 @@ static int calculate_sizes(struct kmem_cache *s) */ size += 2 * sizeof(struct track); - if (flags & DEBUG_DEFAULT_FLAGS) + if (flags & SLAB_RED_ZONE) /* * Add some empty padding so that we can catch * overwrites from earlier objects rather than let @@ -1665,10 +1848,12 @@ static int calculate_sizes(struct kmem_cache *s) * of the object. */ size += sizeof(void *); +#endif + /* * Determine the alignment based on various parameters that the - * user specified (this is unecessarily complex due to the attempt - * to be compatible with SLAB. Should be cleaned up some day). + * user specified and the dynamic determination of cache line size + * on bootup. */ align = calculate_alignment(flags, align, s->objsize); @@ -1700,23 +1885,6 @@ static int calculate_sizes(struct kmem_cache *s) } -static int __init finish_bootstrap(void) -{ - struct list_head *h; - int err; - - slab_state = SYSFS; - - list_for_each(h, &slab_caches) { - struct kmem_cache *s = - container_of(h, struct kmem_cache, list); - - err = sysfs_slab_add(s); - BUG_ON(err); - } - return 0; -} - static int kmem_cache_open(struct kmem_cache *s, gfp_t gfpflags, const char *name, size_t size, size_t align, unsigned long flags, @@ -1730,32 +1898,7 @@ static int kmem_cache_open(struct kmem_cache *s, gfp_t gfpflags, s->objsize = size; s->flags = flags; s->align = align; - - /* - * The page->offset field is only 16 bit wide. This is an offset - * in units of words from the beginning of an object. If the slab - * size is bigger then we cannot move the free pointer behind the - * object anymore. - * - * On 32 bit platforms the limit is 256k. On 64bit platforms - * the limit is 512k. - * - * Debugging or ctor/dtors may create a need to move the free - * pointer. Fail if this happens. - */ - if (s->size >= 65535 * sizeof(void *)) { - BUG_ON(flags & (SLAB_RED_ZONE | SLAB_POISON | - SLAB_STORE_USER | SLAB_DESTROY_BY_RCU)); - BUG_ON(ctor || dtor); - } - else - /* - * Enable debugging if selected on the kernel commandline. - */ - if (slub_debug && (!slub_debug_slabs || - strncmp(slub_debug_slabs, name, - strlen(slub_debug_slabs)) == 0)) - s->flags |= slub_debug; + kmem_cache_open_debug_check(s); if (!calculate_sizes(s)) goto error; @@ -1783,7 +1926,6 @@ EXPORT_SYMBOL(kmem_cache_open); int kmem_ptr_validate(struct kmem_cache *s, const void *object) { struct page * page; - void *addr; page = get_object_page(object); @@ -1791,13 +1933,7 @@ int kmem_ptr_validate(struct kmem_cache *s, const void *object) /* No slab or wrong slab */ return 0; - addr = page_address(page); - if (object < addr || object >= addr + s->objects * s->size) - /* Out of bounds */ - return 0; - - if ((object - addr) % s->size) - /* Improperly aligned */ + if (!check_valid_pointer(s, page, object)) return 0; /* @@ -1826,7 +1962,8 @@ const char *kmem_cache_name(struct kmem_cache *s) EXPORT_SYMBOL(kmem_cache_name); /* - * Attempt to free all slabs on a node + * Attempt to free all slabs on a node. Return the number of slabs we + * were unable to free. */ static int free_list(struct kmem_cache *s, struct kmem_cache_node *n, struct list_head *list) @@ -1847,7 +1984,7 @@ static int free_list(struct kmem_cache *s, struct kmem_cache_node *n, } /* - * Release all resources used by slab cache + * Release all resources used by a slab cache. */ static int kmem_cache_close(struct kmem_cache *s) { @@ -1932,45 +2069,6 @@ static int __init setup_slub_nomerge(char *str) __setup("slub_nomerge", setup_slub_nomerge); -static int __init setup_slub_debug(char *str) -{ - if (!str || *str != '=') - slub_debug = DEBUG_DEFAULT_FLAGS; - else { - str++; - if (*str == 0 || *str == ',') - slub_debug = DEBUG_DEFAULT_FLAGS; - else - for( ;*str && *str != ','; str++) - switch (*str) { - case 'f' : case 'F' : - slub_debug |= SLAB_DEBUG_FREE; - break; - case 'z' : case 'Z' : - slub_debug |= SLAB_RED_ZONE; - break; - case 'p' : case 'P' : - slub_debug |= SLAB_POISON; - break; - case 'u' : case 'U' : - slub_debug |= SLAB_STORE_USER; - break; - case 't' : case 'T' : - slub_debug |= SLAB_TRACE; - break; - default: - printk(KERN_ERR "slub_debug option '%c' " - "unknown. skipped\n",*str); - } - } - - if (*str == ',') - slub_debug_slabs = str + 1; - return 1; -} - -__setup("slub_debug", setup_slub_debug); - static struct kmem_cache *create_kmalloc_cache(struct kmem_cache *s, const char *name, int size, gfp_t gfp_flags) { @@ -2108,13 +2206,14 @@ void kfree(const void *x) EXPORT_SYMBOL(kfree); /* - * kmem_cache_shrink removes empty slabs from the partial lists - * and then sorts the partially allocated slabs by the number - * of items in use. The slabs with the most items in use - * come first. New allocations will remove these from the - * partial list because they are full. The slabs with the - * least items are placed last. If it happens that the objects - * are freed then the page can be returned to the page allocator. + * kmem_cache_shrink removes empty slabs from the partial lists and sorts + * the remaining slabs by the number of items in use. The slabs with the + * most items in use come first. New allocations will then fill those up + * and thus they can be removed from the partial lists. + * + * The slabs with the least items are placed last. This results in them + * being allocated from last increasing the chance that the last objects + * are freed in them. */ int kmem_cache_shrink(struct kmem_cache *s) { @@ -2143,12 +2242,10 @@ int kmem_cache_shrink(struct kmem_cache *s) spin_lock_irqsave(&n->list_lock, flags); /* - * Build lists indexed by the items in use in - * each slab or free slabs if empty. + * Build lists indexed by the items in use in each slab. * - * Note that concurrent frees may occur while - * we hold the list_lock. page->inuse here is - * the upper limit. + * Note that concurrent frees may occur while we hold the + * list_lock. page->inuse here is the upper limit. */ list_for_each_entry_safe(page, t, &n->partial, lru) { if (!page->inuse && slab_trylock(page)) { @@ -2172,8 +2269,8 @@ int kmem_cache_shrink(struct kmem_cache *s) goto out; /* - * Rebuild the partial list with the slabs filled up - * most first and the least used slabs at the end. + * Rebuild the partial list with the slabs filled up most + * first and the least used slabs at the end. */ for (i = s->objects - 1; i >= 0; i--) list_splice(slabs_by_inuse + i, n->partial.prev); @@ -2189,7 +2286,6 @@ EXPORT_SYMBOL(kmem_cache_shrink); /** * krealloc - reallocate memory. The contents will remain unchanged. - * * @p: object to reallocate memory for. * @new_size: how many bytes of memory are required. * @flags: the type of memory to allocate. @@ -2201,9 +2297,8 @@ EXPORT_SYMBOL(kmem_cache_shrink); */ void *krealloc(const void *p, size_t new_size, gfp_t flags) { - struct kmem_cache *new_cache; void *ret; - struct page *page; + size_t ks; if (unlikely(!p)) return kmalloc(new_size, flags); @@ -2213,19 +2308,13 @@ void *krealloc(const void *p, size_t new_size, gfp_t flags) return NULL; } - page = virt_to_head_page(p); - - new_cache = get_slab(new_size, flags); - - /* - * If new size fits in the current cache, bail out. - */ - if (likely(page->slab == new_cache)) + ks = ksize(p); + if (ks >= new_size) return (void *)p; ret = kmalloc(new_size, flags); if (ret) { - memcpy(ret, p, min(new_size, ksize(p))); + memcpy(ret, p, min(new_size, ks)); kfree(p); } return ret; @@ -2243,7 +2332,7 @@ void __init kmem_cache_init(void) #ifdef CONFIG_NUMA /* * Must first have the slab cache available for the allocations of the - * struct kmalloc_cache_node's. There is special bootstrap code in + * struct kmem_cache_node's. There is special bootstrap code in * kmem_cache_open for slab_state == DOWN. */ create_kmalloc_cache(&kmalloc_caches[0], "kmem_cache_node", @@ -2280,7 +2369,7 @@ void __init kmem_cache_init(void) printk(KERN_INFO "SLUB: Genslabs=%d, HWalign=%d, Order=%d-%d, MinObjects=%d," " Processors=%d, Nodes=%d\n", - KMALLOC_SHIFT_HIGH, L1_CACHE_BYTES, + KMALLOC_SHIFT_HIGH, cache_line_size(), slub_min_order, slub_max_order, slub_min_objects, nr_cpu_ids, nr_node_ids); } @@ -2415,8 +2504,8 @@ static void for_all_slabs(void (*func)(struct kmem_cache *, int), int cpu) } /* - * Use the cpu notifier to insure that the slab are flushed - * when necessary. + * Use the cpu notifier to insure that the cpu slabs are flushed when + * necessary. */ static int __cpuinit slab_cpuup_callback(struct notifier_block *nfb, unsigned long action, void *hcpu) @@ -2425,7 +2514,9 @@ static int __cpuinit slab_cpuup_callback(struct notifier_block *nfb, switch (action) { case CPU_UP_CANCELED: + case CPU_UP_CANCELED_FROZEN: case CPU_DEAD: + case CPU_DEAD_FROZEN: for_all_slabs(__flush_cpu_slab, cpu); break; default: @@ -2439,153 +2530,6 @@ static struct notifier_block __cpuinitdata slab_notifier = #endif -#ifdef CONFIG_NUMA - -/***************************************************************** - * Generic reaper used to support the page allocator - * (the cpu slabs are reaped by a per slab workqueue). - * - * Maybe move this to the page allocator? - ****************************************************************/ - -static DEFINE_PER_CPU(unsigned long, reap_node); - -static void init_reap_node(int cpu) -{ - int node; - - node = next_node(cpu_to_node(cpu), node_online_map); - if (node == MAX_NUMNODES) - node = first_node(node_online_map); - - __get_cpu_var(reap_node) = node; -} - -static void next_reap_node(void) -{ - int node = __get_cpu_var(reap_node); - - /* - * Also drain per cpu pages on remote zones - */ - if (node != numa_node_id()) - drain_node_pages(node); - - node = next_node(node, node_online_map); - if (unlikely(node >= MAX_NUMNODES)) - node = first_node(node_online_map); - __get_cpu_var(reap_node) = node; -} -#else -#define init_reap_node(cpu) do { } while (0) -#define next_reap_node(void) do { } while (0) -#endif - -#define REAPTIMEOUT_CPUC (2*HZ) - -#ifdef CONFIG_SMP -static DEFINE_PER_CPU(struct delayed_work, reap_work); - -static void cache_reap(struct work_struct *unused) -{ - next_reap_node(); - refresh_cpu_vm_stats(smp_processor_id()); - schedule_delayed_work(&__get_cpu_var(reap_work), - REAPTIMEOUT_CPUC); -} - -static void __devinit start_cpu_timer(int cpu) -{ - struct delayed_work *reap_work = &per_cpu(reap_work, cpu); - - /* - * When this gets called from do_initcalls via cpucache_init(), - * init_workqueues() has already run, so keventd will be setup - * at that time. - */ - if (keventd_up() && reap_work->work.func == NULL) { - init_reap_node(cpu); - INIT_DELAYED_WORK(reap_work, cache_reap); - schedule_delayed_work_on(cpu, reap_work, HZ + 3 * cpu); - } -} - -static int __init cpucache_init(void) -{ - int cpu; - - /* - * Register the timers that drain pcp pages and update vm statistics - */ - for_each_online_cpu(cpu) - start_cpu_timer(cpu); - return 0; -} -__initcall(cpucache_init); -#endif - -#ifdef SLUB_RESILIENCY_TEST -static unsigned long validate_slab_cache(struct kmem_cache *s); - -static void resiliency_test(void) -{ - u8 *p; - - printk(KERN_ERR "SLUB resiliency testing\n"); - printk(KERN_ERR "-----------------------\n"); - printk(KERN_ERR "A. Corruption after allocation\n"); - - p = kzalloc(16, GFP_KERNEL); - p[16] = 0x12; - printk(KERN_ERR "\n1. kmalloc-16: Clobber Redzone/next pointer" - " 0x12->0x%p\n\n", p + 16); - - validate_slab_cache(kmalloc_caches + 4); - - /* Hmmm... The next two are dangerous */ - p = kzalloc(32, GFP_KERNEL); - p[32 + sizeof(void *)] = 0x34; - printk(KERN_ERR "\n2. kmalloc-32: Clobber next pointer/next slab" - " 0x34 -> -0x%p\n", p); - printk(KERN_ERR "If allocated object is overwritten then not detectable\n\n"); - - validate_slab_cache(kmalloc_caches + 5); - p = kzalloc(64, GFP_KERNEL); - p += 64 + (get_cycles() & 0xff) * sizeof(void *); - *p = 0x56; - printk(KERN_ERR "\n3. kmalloc-64: corrupting random byte 0x56->0x%p\n", - p); - printk(KERN_ERR "If allocated object is overwritten then not detectable\n\n"); - validate_slab_cache(kmalloc_caches + 6); - - printk(KERN_ERR "\nB. Corruption after free\n"); - p = kzalloc(128, GFP_KERNEL); - kfree(p); - *p = 0x78; - printk(KERN_ERR "1. kmalloc-128: Clobber first word 0x78->0x%p\n\n", p); - validate_slab_cache(kmalloc_caches + 7); - - p = kzalloc(256, GFP_KERNEL); - kfree(p); - p[50] = 0x9a; - printk(KERN_ERR "\n2. kmalloc-256: Clobber 50th byte 0x9a->0x%p\n\n", p); - validate_slab_cache(kmalloc_caches + 8); - - p = kzalloc(512, GFP_KERNEL); - kfree(p); - p[512] = 0xab; - printk(KERN_ERR "\n3. kmalloc-512: Clobber redzone 0xab->0x%p\n\n", p); - validate_slab_cache(kmalloc_caches + 9); -} -#else -static void resiliency_test(void) {}; -#endif - -/* - * These are not as efficient as kmalloc for the non debug case. - * We do not have the page struct available so we have to touch one - * cacheline in struct kmem_cache to check slab flags. - */ void *__kmalloc_track_caller(size_t size, gfp_t gfpflags, void *caller) { struct kmem_cache *s = get_slab(size, gfpflags); @@ -2607,13 +2551,12 @@ void *__kmalloc_node_track_caller(size_t size, gfp_t gfpflags, return slab_alloc(s, gfpflags, node, caller); } -#ifdef CONFIG_SYSFS - +#if defined(CONFIG_SYSFS) && defined(CONFIG_SLUB_DEBUG) static int validate_slab(struct kmem_cache *s, struct page *page) { void *p; void *addr = page_address(page); - unsigned long map[BITS_TO_LONGS(s->objects)]; + DECLARE_BITMAP(map, s->objects); if (!check_slab(s, page) || !on_freelist(s, page, NULL)) @@ -2622,14 +2565,14 @@ static int validate_slab(struct kmem_cache *s, struct page *page) /* Now we know that a valid freelist exists */ bitmap_zero(map, s->objects); - for(p = page->freelist; p; p = get_freepointer(s, p)) { - set_bit((p - addr) / s->size, map); + for_each_free_object(p, s, page->freelist) { + set_bit(slab_index(p, s, addr), map); if (!check_object(s, page, p, 0)) return 0; } - for(p = addr; p < addr + s->objects * s->size; p += s->size) - if (!test_bit((p - addr) / s->size, map)) + for_each_object(p, s, addr) + if (!test_bit(slab_index(p, s, addr), map)) if (!check_object(s, page, p, 1)) return 0; return 1; @@ -2645,12 +2588,12 @@ static void validate_slab_slab(struct kmem_cache *s, struct page *page) s->name, page); if (s->flags & DEBUG_DEFAULT_FLAGS) { - if (!PageError(page)) - printk(KERN_ERR "SLUB %s: PageError not set " + if (!SlabDebug(page)) + printk(KERN_ERR "SLUB %s: SlabDebug not set " "on slab 0x%p\n", s->name, page); } else { - if (PageError(page)) - printk(KERN_ERR "SLUB %s: PageError set on " + if (SlabDebug(page)) + printk(KERN_ERR "SLUB %s: SlabDebug set on " "slab 0x%p\n", s->name, page); } } @@ -2702,14 +2645,76 @@ static unsigned long validate_slab_cache(struct kmem_cache *s) return count; } +#ifdef SLUB_RESILIENCY_TEST +static void resiliency_test(void) +{ + u8 *p; + + printk(KERN_ERR "SLUB resiliency testing\n"); + printk(KERN_ERR "-----------------------\n"); + printk(KERN_ERR "A. Corruption after allocation\n"); + + p = kzalloc(16, GFP_KERNEL); + p[16] = 0x12; + printk(KERN_ERR "\n1. kmalloc-16: Clobber Redzone/next pointer" + " 0x12->0x%p\n\n", p + 16); + + validate_slab_cache(kmalloc_caches + 4); + + /* Hmmm... The next two are dangerous */ + p = kzalloc(32, GFP_KERNEL); + p[32 + sizeof(void *)] = 0x34; + printk(KERN_ERR "\n2. kmalloc-32: Clobber next pointer/next slab" + " 0x34 -> -0x%p\n", p); + printk(KERN_ERR "If allocated object is overwritten then not detectable\n\n"); + + validate_slab_cache(kmalloc_caches + 5); + p = kzalloc(64, GFP_KERNEL); + p += 64 + (get_cycles() & 0xff) * sizeof(void *); + *p = 0x56; + printk(KERN_ERR "\n3. kmalloc-64: corrupting random byte 0x56->0x%p\n", + p); + printk(KERN_ERR "If allocated object is overwritten then not detectable\n\n"); + validate_slab_cache(kmalloc_caches + 6); + + printk(KERN_ERR "\nB. Corruption after free\n"); + p = kzalloc(128, GFP_KERNEL); + kfree(p); + *p = 0x78; + printk(KERN_ERR "1. kmalloc-128: Clobber first word 0x78->0x%p\n\n", p); + validate_slab_cache(kmalloc_caches + 7); + + p = kzalloc(256, GFP_KERNEL); + kfree(p); + p[50] = 0x9a; + printk(KERN_ERR "\n2. kmalloc-256: Clobber 50th byte 0x9a->0x%p\n\n", p); + validate_slab_cache(kmalloc_caches + 8); + + p = kzalloc(512, GFP_KERNEL); + kfree(p); + p[512] = 0xab; + printk(KERN_ERR "\n3. kmalloc-512: Clobber redzone 0xab->0x%p\n\n", p); + validate_slab_cache(kmalloc_caches + 9); +} +#else +static void resiliency_test(void) {}; +#endif + /* - * Generate lists of locations where slabcache objects are allocated + * Generate lists of code addresses where slabcache objects are allocated * and freed. */ struct location { unsigned long count; void *addr; + long long sum_time; + long min_time; + long max_time; + long min_pid; + long max_pid; + cpumask_t cpus; + nodemask_t nodes; }; struct loc_track { @@ -2750,11 +2755,12 @@ static int alloc_loc_track(struct loc_track *t, unsigned long max) } static int add_location(struct loc_track *t, struct kmem_cache *s, - void *addr) + const struct track *track) { long start, end, pos; struct location *l; void *caddr; + unsigned long age = jiffies - track->when; start = -1; end = t->count; @@ -2770,19 +2776,36 @@ static int add_location(struct loc_track *t, struct kmem_cache *s, break; caddr = t->loc[pos].addr; - if (addr == caddr) { - t->loc[pos].count++; + if (track->addr == caddr) { + + l = &t->loc[pos]; + l->count++; + if (track->when) { + l->sum_time += age; + if (age < l->min_time) + l->min_time = age; + if (age > l->max_time) + l->max_time = age; + + if (track->pid < l->min_pid) + l->min_pid = track->pid; + if (track->pid > l->max_pid) + l->max_pid = track->pid; + + cpu_set(track->cpu, l->cpus); + } + node_set(page_to_nid(virt_to_page(track)), l->nodes); return 1; } - if (addr < caddr) + if (track->addr < caddr) end = pos; else start = pos; } /* - * Not found. Insert new tracking element + * Not found. Insert new tracking element. */ if (t->count >= t->max && !alloc_loc_track(t, 2 * t->max)) return 0; @@ -2793,7 +2816,16 @@ static int add_location(struct loc_track *t, struct kmem_cache *s, (t->count - pos) * sizeof(struct location)); t->count++; l->count = 1; - l->addr = addr; + l->addr = track->addr; + l->sum_time = age; + l->min_time = age; + l->max_time = age; + l->min_pid = track->pid; + l->max_pid = track->pid; + cpus_clear(l->cpus); + cpu_set(track->cpu, l->cpus); + nodes_clear(l->nodes); + node_set(page_to_nid(virt_to_page(track)), l->nodes); return 1; } @@ -2801,19 +2833,16 @@ static void process_slab(struct loc_track *t, struct kmem_cache *s, struct page *page, enum track_item alloc) { void *addr = page_address(page); - unsigned long map[BITS_TO_LONGS(s->objects)]; + DECLARE_BITMAP(map, s->objects); void *p; bitmap_zero(map, s->objects); - for (p = page->freelist; p; p = get_freepointer(s, p)) - set_bit((p - addr) / s->size, map); - - for (p = addr; p < addr + s->objects * s->size; p += s->size) - if (!test_bit((p - addr) / s->size, map)) { - void *addr = get_track(s, p, alloc)->addr; + for_each_free_object(p, s, page->freelist) + set_bit(slab_index(p, s, addr), map); - add_location(t, s, addr); - } + for_each_object(p, s, addr) + if (!test_bit(slab_index(p, s, addr), map)) + add_location(t, s, get_track(s, p, alloc)); } static int list_locations(struct kmem_cache *s, char *buf, @@ -2847,15 +2876,47 @@ static int list_locations(struct kmem_cache *s, char *buf, } for (i = 0; i < t.count; i++) { - void *addr = t.loc[i].addr; + struct location *l = &t.loc[i]; if (n > PAGE_SIZE - 100) break; - n += sprintf(buf + n, "%7ld ", t.loc[i].count); - if (addr) - n += sprint_symbol(buf + n, (unsigned long)t.loc[i].addr); + n += sprintf(buf + n, "%7ld ", l->count); + + if (l->addr) + n += sprint_symbol(buf + n, (unsigned long)l->addr); else n += sprintf(buf + n, "<not-available>"); + + if (l->sum_time != l->min_time) { + unsigned long remainder; + + n += sprintf(buf + n, " age=%ld/%ld/%ld", + l->min_time, + div_long_long_rem(l->sum_time, l->count, &remainder), + l->max_time); + } else + n += sprintf(buf + n, " age=%ld", + l->min_time); + + if (l->min_pid != l->max_pid) + n += sprintf(buf + n, " pid=%ld-%ld", + l->min_pid, l->max_pid); + else + n += sprintf(buf + n, " pid=%ld", + l->min_pid); + + if (num_online_cpus() > 1 && !cpus_empty(l->cpus)) { + n += sprintf(buf + n, " cpus="); + n += cpulist_scnprintf(buf + n, PAGE_SIZE - n - 50, + l->cpus); + } + + if (num_online_nodes() > 1 && !nodes_empty(l->nodes)) { + n += sprintf(buf + n, " nodes="); + n += nodelist_scnprintf(buf + n, PAGE_SIZE - n - 50, + l->nodes); + } + n += sprintf(buf + n, "\n"); } @@ -3491,6 +3552,7 @@ static int sysfs_slab_alias(struct kmem_cache *s, const char *name) static int __init slab_sysfs_init(void) { + struct list_head *h; int err; err = subsystem_register(&slab_subsys); @@ -3499,7 +3561,15 @@ static int __init slab_sysfs_init(void) return -ENOSYS; } - finish_bootstrap(); + slab_state = SYSFS; + + list_for_each(h, &slab_caches) { + struct kmem_cache *s = + container_of(h, struct kmem_cache, list); + + err = sysfs_slab_add(s); + BUG_ON(err); + } while (alias_list) { struct saved_alias *al = alias_list; @@ -3515,6 +3585,4 @@ static int __init slab_sysfs_init(void) } __initcall(slab_sysfs_init); -#else -__initcall(finish_bootstrap); #endif diff --git a/mm/swap.c b/mm/swap.c index 218c52a24a21..d3cb966fe992 100644 --- a/mm/swap.c +++ b/mm/swap.c @@ -488,7 +488,7 @@ static int cpu_swap_callback(struct notifier_block *nfb, long *committed; committed = &per_cpu(committed_space, (long)hcpu); - if (action == CPU_DEAD) { + if (action == CPU_DEAD || action == CPU_DEAD_FROZEN) { atomic_add(*committed, &vm_committed_space); *committed = 0; __lru_add_drain((long)hcpu); diff --git a/mm/truncate.c b/mm/truncate.c index 0f4b6d18ab0e..4fbe1a2da5fb 100644 --- a/mm/truncate.c +++ b/mm/truncate.c @@ -12,6 +12,7 @@ #include <linux/swap.h> #include <linux/module.h> #include <linux/pagemap.h> +#include <linux/highmem.h> #include <linux/pagevec.h> #include <linux/task_io_accounting_ops.h> #include <linux/buffer_head.h> /* grr. try_to_release_page, @@ -46,7 +47,7 @@ void do_invalidatepage(struct page *page, unsigned long offset) static inline void truncate_partial_page(struct page *page, unsigned partial) { - memclear_highpage_flush(page, partial, PAGE_CACHE_SIZE-partial); + zero_user_page(page, partial, PAGE_CACHE_SIZE - partial, KM_USER0); if (PagePrivate(page)) do_invalidatepage(page, partial); } diff --git a/mm/vmscan.c b/mm/vmscan.c index 1c8e75a1cfcd..1be5a6376ef0 100644 --- a/mm/vmscan.c +++ b/mm/vmscan.c @@ -1528,7 +1528,7 @@ static int __devinit cpu_callback(struct notifier_block *nfb, pg_data_t *pgdat; cpumask_t mask; - if (action == CPU_ONLINE) { + if (action == CPU_ONLINE || action == CPU_ONLINE_FROZEN) { for_each_online_pgdat(pgdat) { mask = node_to_cpumask(pgdat->node_id); if (any_online_cpu(mask) != NR_CPUS) diff --git a/mm/vmstat.c b/mm/vmstat.c index 6c488d6ac425..9832d9a41d8c 100644 --- a/mm/vmstat.c +++ b/mm/vmstat.c @@ -281,6 +281,17 @@ EXPORT_SYMBOL(dec_zone_page_state); /* * Update the zone counters for one cpu. + * + * Note that refresh_cpu_vm_stats strives to only access + * node local memory. The per cpu pagesets on remote zones are placed + * in the memory local to the processor using that pageset. So the + * loop over all zones will access a series of cachelines local to + * the processor. + * + * The call to zone_page_state_add updates the cachelines with the + * statistics in the remote zone struct as well as the global cachelines + * with the global counters. These could cause remote node cache line + * bouncing and will have to be only done when necessary. */ void refresh_cpu_vm_stats(int cpu) { @@ -289,21 +300,54 @@ void refresh_cpu_vm_stats(int cpu) unsigned long flags; for_each_zone(zone) { - struct per_cpu_pageset *pcp; + struct per_cpu_pageset *p; if (!populated_zone(zone)) continue; - pcp = zone_pcp(zone, cpu); + p = zone_pcp(zone, cpu); for (i = 0; i < NR_VM_ZONE_STAT_ITEMS; i++) - if (pcp->vm_stat_diff[i]) { + if (p->vm_stat_diff[i]) { local_irq_save(flags); - zone_page_state_add(pcp->vm_stat_diff[i], + zone_page_state_add(p->vm_stat_diff[i], zone, i); - pcp->vm_stat_diff[i] = 0; + p->vm_stat_diff[i] = 0; +#ifdef CONFIG_NUMA + /* 3 seconds idle till flush */ + p->expire = 3; +#endif local_irq_restore(flags); } +#ifdef CONFIG_NUMA + /* + * Deal with draining the remote pageset of this + * processor + * + * Check if there are pages remaining in this pageset + * if not then there is nothing to expire. + */ + if (!p->expire || (!p->pcp[0].count && !p->pcp[1].count)) + continue; + + /* + * We never drain zones local to this processor. + */ + if (zone_to_nid(zone) == numa_node_id()) { + p->expire = 0; + continue; + } + + p->expire--; + if (p->expire) + continue; + + if (p->pcp[0].count) + drain_zone_pages(zone, p->pcp + 0); + + if (p->pcp[1].count) + drain_zone_pages(zone, p->pcp + 1); +#endif } } @@ -640,6 +684,24 @@ const struct seq_operations vmstat_op = { #endif /* CONFIG_PROC_FS */ #ifdef CONFIG_SMP +static DEFINE_PER_CPU(struct delayed_work, vmstat_work); +int sysctl_stat_interval __read_mostly = HZ; + +static void vmstat_update(struct work_struct *w) +{ + refresh_cpu_vm_stats(smp_processor_id()); + schedule_delayed_work(&__get_cpu_var(vmstat_work), + sysctl_stat_interval); +} + +static void __devinit start_cpu_timer(int cpu) +{ + struct delayed_work *vmstat_work = &per_cpu(vmstat_work, cpu); + + INIT_DELAYED_WORK(vmstat_work, vmstat_update); + schedule_delayed_work_on(cpu, vmstat_work, HZ + cpu); +} + /* * Use the cpu notifier to insure that the thresholds are recalculated * when necessary. @@ -648,10 +710,24 @@ static int __cpuinit vmstat_cpuup_callback(struct notifier_block *nfb, unsigned long action, void *hcpu) { + long cpu = (long)hcpu; + switch (action) { - case CPU_UP_PREPARE: - case CPU_UP_CANCELED: + case CPU_ONLINE: + case CPU_ONLINE_FROZEN: + start_cpu_timer(cpu); + break; + case CPU_DOWN_PREPARE: + case CPU_DOWN_PREPARE_FROZEN: + cancel_rearming_delayed_work(&per_cpu(vmstat_work, cpu)); + per_cpu(vmstat_work, cpu).work.func = NULL; + break; + case CPU_DOWN_FAILED: + case CPU_DOWN_FAILED_FROZEN: + start_cpu_timer(cpu); + break; case CPU_DEAD: + case CPU_DEAD_FROZEN: refresh_zone_stat_thresholds(); break; default: @@ -665,8 +741,13 @@ static struct notifier_block __cpuinitdata vmstat_notifier = int __init setup_vmstat(void) { + int cpu; + refresh_zone_stat_thresholds(); register_cpu_notifier(&vmstat_notifier); + + for_each_online_cpu(cpu) + start_cpu_timer(cpu); return 0; } module_init(setup_vmstat) diff --git a/net/core/dev.c b/net/core/dev.c index 4317c1be4d3f..8301e2ac747f 100644 --- a/net/core/dev.c +++ b/net/core/dev.c @@ -3450,7 +3450,7 @@ static int dev_cpu_callback(struct notifier_block *nfb, unsigned int cpu, oldcpu = (unsigned long)ocpu; struct softnet_data *sd, *oldsd; - if (action != CPU_DEAD) + if (action != CPU_DEAD && action != CPU_DEAD_FROZEN) return NOTIFY_OK; local_irq_disable(); diff --git a/net/core/flow.c b/net/core/flow.c index 5d25697920b1..051430545a05 100644 --- a/net/core/flow.c +++ b/net/core/flow.c @@ -338,7 +338,7 @@ static int flow_cache_cpu(struct notifier_block *nfb, unsigned long action, void *hcpu) { - if (action == CPU_DEAD) + if (action == CPU_DEAD || action == CPU_DEAD_FROZEN) __flow_cache_shrink((unsigned long)hcpu, 0); return NOTIFY_OK; } diff --git a/net/decnet/af_decnet.c b/net/decnet/af_decnet.c index 9fbe87c93802..bfa910b6ad25 100644 --- a/net/decnet/af_decnet.c +++ b/net/decnet/af_decnet.c @@ -1839,7 +1839,7 @@ static inline int dn_queue_too_long(struct dn_scp *scp, struct sk_buff_head *que } /* - * The DECnet spec requires the the "routing layer" accepts packets which + * The DECnet spec requires that the "routing layer" accepts packets which * are at least 230 bytes in size. This excludes any headers which the NSP * layer might add, so we always assume that we'll be using the maximal * length header on data packets. The variation in length is due to the diff --git a/net/ipv4/Kconfig b/net/ipv4/Kconfig index e62aee0ec4c5..c68196cc56ab 100644 --- a/net/ipv4/Kconfig +++ b/net/ipv4/Kconfig @@ -130,7 +130,7 @@ config IP_ROUTE_MULTIPATH_RR tristate "MULTIPATH: round robin algorithm" depends on IP_ROUTE_MULTIPATH_CACHED help - Mulitpath routes are chosen according to Round Robin + Multipath routes are chosen according to Round Robin config IP_ROUTE_MULTIPATH_RANDOM tristate "MULTIPATH: random algorithm" @@ -651,7 +651,7 @@ config TCP_MD5SIG select CRYPTO select CRYPTO_MD5 ---help--- - RFC2385 specifices a method of giving MD5 protection to TCP sessions. + RFC2385 specifies a method of giving MD5 protection to TCP sessions. Its main (only?) use is to protect BGP sessions between core routers on the Internet. diff --git a/net/ipv4/cipso_ipv4.c b/net/ipv4/cipso_ipv4.c index e1f18489db1d..86a2b52aad38 100644 --- a/net/ipv4/cipso_ipv4.c +++ b/net/ipv4/cipso_ipv4.c @@ -629,7 +629,7 @@ doi_walk_return: * @domain: the domain to add * * Description: - * Adds the @domain to the the DOI specified by @doi_def, this function + * Adds the @domain to the DOI specified by @doi_def, this function * should only be called by external functions (i.e. NetLabel). This function * does allocate memory. Returns zero on success, negative values on failure. * diff --git a/net/ipv4/ipvs/ip_vs_ctl.c b/net/ipv4/ipvs/ip_vs_ctl.c index b3050a6817e7..68fe1d4d0210 100644 --- a/net/ipv4/ipvs/ip_vs_ctl.c +++ b/net/ipv4/ipvs/ip_vs_ctl.c @@ -2387,6 +2387,7 @@ void ip_vs_control_cleanup(void) EnterFunction(2); ip_vs_trash_cleanup(); cancel_rearming_delayed_work(&defense_work); + cancel_work_sync(&defense_work.work); ip_vs_kill_estimator(&ip_vs_stats); unregister_sysctl_table(sysctl_header); proc_net_remove("ip_vs_stats"); diff --git a/net/ipv4/ipvs/ip_vs_sed.c b/net/ipv4/ipvs/ip_vs_sed.c index ff366f7390d9..dd7c128f9db3 100644 --- a/net/ipv4/ipvs/ip_vs_sed.c +++ b/net/ipv4/ipvs/ip_vs_sed.c @@ -18,7 +18,7 @@ * The SED algorithm attempts to minimize each job's expected delay until * completion. The expected delay that the job will experience is * (Ci + 1) / Ui if sent to the ith server, in which Ci is the number of - * jobs on the the ith server and Ui is the fixed service rate (weight) of + * jobs on the ith server and Ui is the fixed service rate (weight) of * the ith server. The SED algorithm adopts a greedy policy that each does * what is in its own best interest, i.e. to join the queue which would * minimize its expected delay of completion. diff --git a/net/ipv4/udp.c b/net/ipv4/udp.c index 113e0c4c8a92..66026df1cc76 100644 --- a/net/ipv4/udp.c +++ b/net/ipv4/udp.c @@ -983,7 +983,7 @@ int udp_disconnect(struct sock *sk, int flags) } /* return: - * 1 if the the UDP system should process it + * 1 if the UDP system should process it * 0 if we should drop this packet * -1 if it should get processed by xfrm4_rcv_encap */ diff --git a/net/ipv6/netfilter/Kconfig b/net/ipv6/netfilter/Kconfig index bbe99f842f9f..838b8ddee8c0 100644 --- a/net/ipv6/netfilter/Kconfig +++ b/net/ipv6/netfilter/Kconfig @@ -28,7 +28,7 @@ config IP6_NF_QUEUE packets which enables users to receive the filtered packets with QUEUE target using libipq. - THis option enables the old IPv6-only "ip6_queue" implementation + This option enables the old IPv6-only "ip6_queue" implementation which has been obsoleted by the new "nfnetlink_queue" code (see CONFIG_NETFILTER_NETLINK_QUEUE). diff --git a/net/iucv/iucv.c b/net/iucv/iucv.c index fb3faf72e850..b7333061016d 100644 --- a/net/iucv/iucv.c +++ b/net/iucv/iucv.c @@ -556,6 +556,7 @@ static int __cpuinit iucv_cpu_notify(struct notifier_block *self, switch (action) { case CPU_UP_PREPARE: + case CPU_UP_PREPARE_FROZEN: if (!percpu_populate(iucv_irq_data, sizeof(struct iucv_irq_data), GFP_KERNEL|GFP_DMA, cpu)) @@ -567,15 +568,20 @@ static int __cpuinit iucv_cpu_notify(struct notifier_block *self, } break; case CPU_UP_CANCELED: + case CPU_UP_CANCELED_FROZEN: case CPU_DEAD: + case CPU_DEAD_FROZEN: percpu_depopulate(iucv_param, cpu); percpu_depopulate(iucv_irq_data, cpu); break; case CPU_ONLINE: + case CPU_ONLINE_FROZEN: case CPU_DOWN_FAILED: + case CPU_DOWN_FAILED_FROZEN: smp_call_function_on(iucv_declare_cpu, NULL, 0, 1, cpu); break; case CPU_DOWN_PREPARE: + case CPU_DOWN_PREPARE_FROZEN: cpumask = iucv_buffer_cpumask; cpu_clear(cpu, cpumask); if (cpus_empty(cpumask)) diff --git a/net/llc/af_llc.c b/net/llc/af_llc.c index 7d9fa38b6a7d..6b8a103cf9e6 100644 --- a/net/llc/af_llc.c +++ b/net/llc/af_llc.c @@ -324,7 +324,7 @@ static int llc_ui_bind(struct socket *sock, struct sockaddr *uaddr, int addrlen) memset(&laddr, 0, sizeof(laddr)); memset(&daddr, 0, sizeof(daddr)); /* - * FIXME: check if the the address is multicast, + * FIXME: check if the address is multicast, * only SOCK_DGRAM can do this. */ memcpy(laddr.mac, addr->sllc_mac, IFHWADDRLEN); diff --git a/net/netfilter/Kconfig b/net/netfilter/Kconfig index ea6211cade0a..a567dae8e5fd 100644 --- a/net/netfilter/Kconfig +++ b/net/netfilter/Kconfig @@ -197,7 +197,7 @@ config NF_CONNTRACK_PPTP Please note that not all PPTP modes of operation are supported yet. Specifically these limitations exist: - - Blindy assumes that control connections are always established + - Blindly assumes that control connections are always established in PNS->PAC direction. This is a violation of RFC2637. - Only supports a single call within each session diff --git a/net/netfilter/nf_conntrack_expect.c b/net/netfilter/nf_conntrack_expect.c index c31af29a4439..117cbfdb910c 100644 --- a/net/netfilter/nf_conntrack_expect.c +++ b/net/netfilter/nf_conntrack_expect.c @@ -177,7 +177,7 @@ void nf_conntrack_unexpect_related(struct nf_conntrack_expect *exp) struct nf_conntrack_expect *i; write_lock_bh(&nf_conntrack_lock); - /* choose the the oldest expectation to evict */ + /* choose the oldest expectation to evict */ list_for_each_entry_reverse(i, &nf_conntrack_expect_list, list) { if (expect_matches(i, exp) && del_timer(&i->timeout)) { nf_ct_unlink_expect(i); diff --git a/net/sctp/chunk.c b/net/sctp/chunk.c index 83ef411772f4..77fb7b06a9c4 100644 --- a/net/sctp/chunk.c +++ b/net/sctp/chunk.c @@ -3,7 +3,7 @@ * * This file is part of the SCTP kernel reference Implementation * - * This file contains the code relating the the chunk abstraction. + * This file contains the code relating the chunk abstraction. * * The SCTP reference implementation is free software; * you can redistribute it and/or modify it under the terms of diff --git a/net/sctp/socket.c b/net/sctp/socket.c index 9f1a908776de..83a76ba9d7b3 100644 --- a/net/sctp/socket.c +++ b/net/sctp/socket.c @@ -2586,7 +2586,7 @@ static int sctp_setsockopt_rtoinfo(struct sock *sk, char __user *optval, int opt * * 7.1.2 SCTP_ASSOCINFO * - * This option is used to tune the the maximum retransmission attempts + * This option is used to tune the maximum retransmission attempts * of the association. * Returns an error if the new association retransmission value is * greater than the sum of the retransmission value of the peer. @@ -4547,7 +4547,7 @@ static int sctp_getsockopt_rtoinfo(struct sock *sk, int len, * * 7.1.2 SCTP_ASSOCINFO * - * This option is used to tune the the maximum retransmission attempts + * This option is used to tune the maximum retransmission attempts * of the association. * Returns an error if the new association retransmission value is * greater than the sum of the retransmission value of the peer. diff --git a/net/sunrpc/auth_gss/svcauth_gss.c b/net/sunrpc/auth_gss/svcauth_gss.c index db298b501c81..099a983797da 100644 --- a/net/sunrpc/auth_gss/svcauth_gss.c +++ b/net/sunrpc/auth_gss/svcauth_gss.c @@ -924,6 +924,7 @@ static inline int gss_write_init_verf(struct svc_rqst *rqstp, struct rsi *rsip) { struct rsc *rsci; + int rc; if (rsip->major_status != GSS_S_COMPLETE) return gss_write_null_verf(rqstp); @@ -932,7 +933,9 @@ gss_write_init_verf(struct svc_rqst *rqstp, struct rsi *rsip) rsip->major_status = GSS_S_NO_CONTEXT; return gss_write_null_verf(rqstp); } - return gss_write_verf(rqstp, rsci->mechctx, GSS_SEQ_WIN); + rc = gss_write_verf(rqstp, rsci->mechctx, GSS_SEQ_WIN); + cache_put(&rsci->h, &rsc_cache); + return rc; } /* @@ -1089,6 +1092,8 @@ svcauth_gss_accept(struct svc_rqst *rqstp, __be32 *authp) } goto complete; case RPC_GSS_PROC_DESTROY: + if (gss_write_verf(rqstp, rsci->mechctx, gc->gc_seq)) + goto auth_err; set_bit(CACHE_NEGATIVE, &rsci->h.flags); if (resv->iov_len + 4 > PAGE_SIZE) goto drop; @@ -1196,13 +1201,7 @@ svcauth_gss_wrap_resp_integ(struct svc_rqst *rqstp) if (xdr_buf_subsegment(resbuf, &integ_buf, integ_offset, integ_len)) BUG(); - if (resbuf->page_len == 0 - && resbuf->head[0].iov_len + RPC_MAX_AUTH_SIZE - < PAGE_SIZE) { - BUG_ON(resbuf->tail[0].iov_len); - /* Use head for everything */ - resv = &resbuf->head[0]; - } else if (resbuf->tail[0].iov_base == NULL) { + if (resbuf->tail[0].iov_base == NULL) { if (resbuf->head[0].iov_len + RPC_MAX_AUTH_SIZE > PAGE_SIZE) goto out_err; resbuf->tail[0].iov_base = resbuf->head[0].iov_base diff --git a/net/sunrpc/rpc_pipe.c b/net/sunrpc/rpc_pipe.c index ad39b47e05bc..a2f1893bde53 100644 --- a/net/sunrpc/rpc_pipe.c +++ b/net/sunrpc/rpc_pipe.c @@ -845,6 +845,8 @@ init_once(void * foo, struct kmem_cache * cachep, unsigned long flags) int register_rpc_pipefs(void) { + int err; + rpc_inode_cachep = kmem_cache_create("rpc_inode_cache", sizeof(struct rpc_inode), 0, (SLAB_HWCACHE_ALIGN|SLAB_RECLAIM_ACCOUNT| @@ -852,7 +854,12 @@ int register_rpc_pipefs(void) init_once, NULL); if (!rpc_inode_cachep) return -ENOMEM; - register_filesystem(&rpc_pipe_fs_type); + err = register_filesystem(&rpc_pipe_fs_type); + if (err) { + kmem_cache_destroy(rpc_inode_cachep); + return err; + } + return 0; } diff --git a/net/sunrpc/sunrpc_syms.c b/net/sunrpc/sunrpc_syms.c index 43ecf62f12ef..0d35bc796d00 100644 --- a/net/sunrpc/sunrpc_syms.c +++ b/net/sunrpc/sunrpc_syms.c @@ -146,9 +146,11 @@ init_sunrpc(void) int err = register_rpc_pipefs(); if (err) goto out; - err = rpc_init_mempool() != 0; - if (err) + err = rpc_init_mempool(); + if (err) { + unregister_rpc_pipefs(); goto out; + } #ifdef RPC_DEBUG rpc_register_sysctl(); #endif diff --git a/net/sunrpc/svc.c b/net/sunrpc/svc.c index b7503c103ae8..e673ef993904 100644 --- a/net/sunrpc/svc.c +++ b/net/sunrpc/svc.c @@ -907,7 +907,7 @@ svc_process(struct svc_rqst *rqstp) * better idea of reply size */ if (procp->pc_xdrressize) - svc_reserve(rqstp, procp->pc_xdrressize<<2); + svc_reserve_auth(rqstp, procp->pc_xdrressize<<2); /* Call the function that processes the request. */ if (!versp->vs_dispatch) { diff --git a/net/sunrpc/svcauth.c b/net/sunrpc/svcauth.c index f5c3808bf85a..af7c5f05c6e1 100644 --- a/net/sunrpc/svcauth.c +++ b/net/sunrpc/svcauth.c @@ -64,7 +64,7 @@ int svc_set_client(struct svc_rqst *rqstp) } /* A request, which was authenticated, has now executed. - * Time to finalise the the credentials and verifier + * Time to finalise the credentials and verifier * and release and resources */ int svc_authorise(struct svc_rqst *rqstp) diff --git a/net/sunrpc/svcauth_unix.c b/net/sunrpc/svcauth_unix.c index 2bd23ea2aa8b..07dcd20cbee4 100644 --- a/net/sunrpc/svcauth_unix.c +++ b/net/sunrpc/svcauth_unix.c @@ -385,7 +385,7 @@ ip_map_cached_get(struct svc_rqst *rqstp) { struct ip_map *ipm; struct svc_sock *svsk = rqstp->rq_sock; - spin_lock_bh(&svsk->sk_defer_lock); + spin_lock(&svsk->sk_lock); ipm = svsk->sk_info_authunix; if (ipm != NULL) { if (!cache_valid(&ipm->h)) { @@ -395,13 +395,13 @@ ip_map_cached_get(struct svc_rqst *rqstp) * same IP address. */ svsk->sk_info_authunix = NULL; - spin_unlock_bh(&svsk->sk_defer_lock); + spin_unlock(&svsk->sk_lock); cache_put(&ipm->h, &ip_map_cache); return NULL; } cache_get(&ipm->h); } - spin_unlock_bh(&svsk->sk_defer_lock); + spin_unlock(&svsk->sk_lock); return ipm; } @@ -410,14 +410,14 @@ ip_map_cached_put(struct svc_rqst *rqstp, struct ip_map *ipm) { struct svc_sock *svsk = rqstp->rq_sock; - spin_lock_bh(&svsk->sk_defer_lock); + spin_lock(&svsk->sk_lock); if (svsk->sk_sock->type == SOCK_STREAM && svsk->sk_info_authunix == NULL) { /* newly cached, keep the reference */ svsk->sk_info_authunix = ipm; ipm = NULL; } - spin_unlock_bh(&svsk->sk_defer_lock); + spin_unlock(&svsk->sk_lock); if (ipm) cache_put(&ipm->h, &ip_map_cache); } diff --git a/net/sunrpc/svcsock.c b/net/sunrpc/svcsock.c index 22f61aee4824..5baf48de2558 100644 --- a/net/sunrpc/svcsock.c +++ b/net/sunrpc/svcsock.c @@ -53,7 +53,8 @@ * svc_serv->sv_lock protects sv_tempsocks, sv_permsocks, sv_tmpcnt. * when both need to be taken (rare), svc_serv->sv_lock is first. * BKL protects svc_serv->sv_nrthread. - * svc_sock->sk_defer_lock protects the svc_sock->sk_deferred list + * svc_sock->sk_lock protects the svc_sock->sk_deferred list + * and the ->sk_info_authunix cache. * svc_sock->sk_flags.SK_BUSY prevents a svc_sock being enqueued multiply. * * Some flags can be set to certain values at any time @@ -787,15 +788,20 @@ svc_udp_recvfrom(struct svc_rqst *rqstp) } clear_bit(SK_DATA, &svsk->sk_flags); - while ((err = kernel_recvmsg(svsk->sk_sock, &msg, NULL, - 0, 0, MSG_PEEK | MSG_DONTWAIT)) < 0 || - (skb = skb_recv_datagram(svsk->sk_sk, 0, 1, &err)) == NULL) { - if (err == -EAGAIN) { - svc_sock_received(svsk); - return err; + skb = NULL; + err = kernel_recvmsg(svsk->sk_sock, &msg, NULL, + 0, 0, MSG_PEEK | MSG_DONTWAIT); + if (err >= 0) + skb = skb_recv_datagram(svsk->sk_sk, 0, 1, &err); + + if (skb == NULL) { + if (err != -EAGAIN) { + /* possibly an icmp error */ + dprintk("svc: recvfrom returned error %d\n", -err); + set_bit(SK_DATA, &svsk->sk_flags); } - /* possibly an icmp error */ - dprintk("svc: recvfrom returned error %d\n", -err); + svc_sock_received(svsk); + return -EAGAIN; } rqstp->rq_addrlen = sizeof(rqstp->rq_addr); if (skb->tstamp.tv64 == 0) { @@ -1633,7 +1639,7 @@ static struct svc_sock *svc_setup_socket(struct svc_serv *serv, svsk->sk_server = serv; atomic_set(&svsk->sk_inuse, 1); svsk->sk_lastrecv = get_seconds(); - spin_lock_init(&svsk->sk_defer_lock); + spin_lock_init(&svsk->sk_lock); INIT_LIST_HEAD(&svsk->sk_deferred); INIT_LIST_HEAD(&svsk->sk_ready); mutex_init(&svsk->sk_mutex); @@ -1857,9 +1863,9 @@ static void svc_revisit(struct cache_deferred_req *dreq, int too_many) dprintk("revisit queued\n"); svsk = dr->svsk; dr->svsk = NULL; - spin_lock_bh(&svsk->sk_defer_lock); + spin_lock(&svsk->sk_lock); list_add(&dr->handle.recent, &svsk->sk_deferred); - spin_unlock_bh(&svsk->sk_defer_lock); + spin_unlock(&svsk->sk_lock); set_bit(SK_DEFERRED, &svsk->sk_flags); svc_sock_enqueue(svsk); svc_sock_put(svsk); @@ -1925,7 +1931,7 @@ static struct svc_deferred_req *svc_deferred_dequeue(struct svc_sock *svsk) if (!test_bit(SK_DEFERRED, &svsk->sk_flags)) return NULL; - spin_lock_bh(&svsk->sk_defer_lock); + spin_lock(&svsk->sk_lock); clear_bit(SK_DEFERRED, &svsk->sk_flags); if (!list_empty(&svsk->sk_deferred)) { dr = list_entry(svsk->sk_deferred.next, @@ -1934,6 +1940,6 @@ static struct svc_deferred_req *svc_deferred_dequeue(struct svc_sock *svsk) list_del_init(&dr->handle.recent); set_bit(SK_DEFERRED, &svsk->sk_flags); } - spin_unlock_bh(&svsk->sk_defer_lock); + spin_unlock(&svsk->sk_lock); return dr; } diff --git a/scripts/basic/docproc.c b/scripts/basic/docproc.c index d6071cbf13d7..f4d2f68452ba 100644 --- a/scripts/basic/docproc.c +++ b/scripts/basic/docproc.c @@ -211,7 +211,7 @@ void find_export_symbols(char * filename) * Document all external or internal functions in a file. * Call kernel-doc with following parameters: * kernel-doc -docbook -nofunction function_name1 filename - * function names are obtained from all the the src files + * function names are obtained from all the src files * by find_export_symbols. * intfunc uses -nofunction * extfunc uses -function diff --git a/scripts/kernel-doc b/scripts/kernel-doc index a325a0c890dc..e5bf649e516a 100755 --- a/scripts/kernel-doc +++ b/scripts/kernel-doc @@ -337,6 +337,7 @@ sub get_kernel_version() { } return $version; } +my $kernelversion = get_kernel_version(); # generate a sequence of code that will splice in highlighting information # using the s// operator. @@ -610,7 +611,7 @@ sub output_function_xml(%) { print "<refmeta>\n"; print " <refentrytitle><phrase>".$args{'function'}."</phrase></refentrytitle>\n"; print " <manvolnum>9</manvolnum>\n"; - print " <refmiscinfo class=\"version\">" . get_kernel_version() . "</refmiscinfo>\n"; + print " <refmiscinfo class=\"version\">" . $kernelversion . "</refmiscinfo>\n"; print "</refmeta>\n"; print "<refnamediv>\n"; print " <refname>".$args{'function'}."</refname>\n"; @@ -687,7 +688,7 @@ sub output_struct_xml(%) { print "<refmeta>\n"; print " <refentrytitle><phrase>".$args{'type'}." ".$args{'struct'}."</phrase></refentrytitle>\n"; print " <manvolnum>9</manvolnum>\n"; - print " <refmiscinfo class=\"version\">" . get_kernel_version() . "</refmiscinfo>\n"; + print " <refmiscinfo class=\"version\">" . $kernelversion . "</refmiscinfo>\n"; print "</refmeta>\n"; print "<refnamediv>\n"; print " <refname>".$args{'type'}." ".$args{'struct'}."</refname>\n"; @@ -772,7 +773,7 @@ sub output_enum_xml(%) { print "<refmeta>\n"; print " <refentrytitle><phrase>enum ".$args{'enum'}."</phrase></refentrytitle>\n"; print " <manvolnum>9</manvolnum>\n"; - print " <refmiscinfo class=\"version\">" . get_kernel_version() . "</refmiscinfo>\n"; + print " <refmiscinfo class=\"version\">" . $kernelversion . "</refmiscinfo>\n"; print "</refmeta>\n"; print "<refnamediv>\n"; print " <refname>enum ".$args{'enum'}."</refname>\n"; diff --git a/scripts/mod/modpost.c b/scripts/mod/modpost.c index 480e18b00aa6..113dc77b9f60 100644 --- a/scripts/mod/modpost.c +++ b/scripts/mod/modpost.c @@ -1343,6 +1343,7 @@ static void add_header(struct buffer *b, struct module *mod) buf_printf(b, "#ifdef CONFIG_MODULE_UNLOAD\n" " .exit = cleanup_module,\n" "#endif\n"); + buf_printf(b, " .arch = MODULE_ARCH_INIT,\n"); buf_printf(b, "};\n"); } diff --git a/security/selinux/Kconfig b/security/selinux/Kconfig index 23b51047494e..b32a459c0683 100644 --- a/security/selinux/Kconfig +++ b/security/selinux/Kconfig @@ -137,7 +137,7 @@ config SECURITY_SELINUX_POLICYDB_VERSION_MAX Examples: For the Fedora Core 3 or 4 Linux distributions, enable this option - and set the value via the next option. For Fedore Core 5 and later, + and set the value via the next option. For Fedora Core 5 and later, do not enable this option. If you are unsure how to answer this question, answer N. diff --git a/sound/core/Kconfig b/sound/core/Kconfig index b2927523d79d..829ca38b595e 100644 --- a/sound/core/Kconfig +++ b/sound/core/Kconfig @@ -146,7 +146,7 @@ config SND_VERBOSE_PROCFS default y help Say Y here to include code for verbose procfs contents (provides - usefull information to developers when a problem occurs). On the + useful information to developers when a problem occurs). On the other side, it makes the ALSA subsystem larger. config SND_VERBOSE_PRINTK diff --git a/sound/oss/es1371.c b/sound/oss/es1371.c index 974dd732b149..593a3aac12ce 100644 --- a/sound/oss/es1371.c +++ b/sound/oss/es1371.c @@ -100,7 +100,7 @@ * Tjeerd Mulder <tjeerd.mulder@fujitsu-siemens.com> * 05.01.2001 0.29 Hopefully updates will not be required anymore when Creative bumps * the CT5880 revision. - * suggested by Stephan Müller <smueller@chronox.de> + * suggested by Stephan Müller <smueller@chronox.de> * 31.01.2001 0.30 Register/Unregister gameport * Fix SETTRIGGER non OSS API conformity * 14.07.2001 0.31 Add list of laptops needing amplifier control diff --git a/sound/oss/pas2_pcm.c b/sound/oss/pas2_pcm.c index 4af6aafa3d86..36c3ea62086b 100644 --- a/sound/oss/pas2_pcm.c +++ b/sound/oss/pas2_pcm.c @@ -85,7 +85,7 @@ static int pcm_set_speed(int arg) * come from the SDK found on ftp.uwp.edu:/pub/msdos/proaudio/. * * I cleared bit 5 of these values, since that bit controls the master - * mute flag. (Olav Wölfelschneider) + * mute flag. (Olav Wölfelschneider) * */ #if !defined NO_AUTO_FILTER_SET diff --git a/sound/oss/trident.c b/sound/oss/trident.c index d98d311542ed..3bc1f6e9e4a3 100644 --- a/sound/oss/trident.c +++ b/sound/oss/trident.c @@ -18,7 +18,7 @@ * Ollie Lho <ollie@sis.com.tw> SiS 7018 Audio Core Support * Ching-Ling Lee <cling-li@ali.com.tw> ALi 5451 Audio Core Support * Matt Wu <mattwu@acersoftech.com.cn> ALi 5451 Audio Core Support - * Peter Wächtler <pwaechtler@loewe-komp.de> CyberPro5050 support + * Peter Wächtler <pwaechtler@loewe-komp.de> CyberPro5050 support * Muli Ben-Yehuda <mulix@mulix.org> * * @@ -89,7 +89,7 @@ * use set_current_state, properly release resources on failure in * trident_probe, get rid of check_region * v0.14.9c - * August 10 2001 Peter Wächtler <pwaechtler@loewe-komp.de> + * August 10 2001 Peter Wächtler <pwaechtler@loewe-komp.de> * added support for Tvia (formerly Integraphics/IGST) CyberPro5050 * this chip is often found in settop boxes (combined video+audio) * v0.14.9b diff --git a/sound/pci/ac97/ac97_codec.c b/sound/pci/ac97/ac97_codec.c index a9eec2a2357d..3bfb2102fc5d 100644 --- a/sound/pci/ac97/ac97_codec.c +++ b/sound/pci/ac97/ac97_codec.c @@ -1083,7 +1083,7 @@ static void check_volume_resolution(struct snd_ac97 *ac97, int reg, unsigned cha unsigned short val; snd_ac97_write(ac97, reg, 0x8080 | cbit[i] | (cbit[i] << 8)); /* Do the read twice due to buffers on some ac97 codecs. - * e.g. The STAC9704 returns exactly what you wrote the the register + * e.g. The STAC9704 returns exactly what you wrote to the register * if you read it immediately. This causes the detect routine to fail. */ val = snd_ac97_read(ac97, reg); diff --git a/sound/pci/ice1712/delta.h b/sound/pci/ice1712/delta.h index e65d669af639..e47861ccd6e7 100644 --- a/sound/pci/ice1712/delta.h +++ b/sound/pci/ice1712/delta.h @@ -63,7 +63,7 @@ extern const struct snd_ice1712_card_info snd_ice1712_delta_cards[]; /* look to CS8414 datasheet */ #define ICE1712_DELTA_SPDIF_OUT_STAT_CLOCK 0x04 /* S/PDIF output status clock */ - /* (writting on rising edge - 0->1) */ + /* (writing on rising edge - 0->1) */ /* all except Delta44 */ /* look to CS8404A datasheet */ #define ICE1712_DELTA_SPDIF_OUT_STAT_DATA 0x08 @@ -100,7 +100,7 @@ extern const struct snd_ice1712_card_info snd_ice1712_delta_cards[]; /* AKM4524 serial data */ #define ICE1712_DELTA_CODEC_SERIAL_CLOCK 0x20 /* AKM4524 serial clock */ - /* (writting on rising edge - 0->1 */ + /* (writing on rising edge - 0->1 */ #define ICE1712_DELTA_CODEC_CHIP_A 0x40 #define ICE1712_DELTA_CODEC_CHIP_B 0x80 /* 1 - select chip A or B */ diff --git a/sound/pci/mixart/mixart.c b/sound/pci/mixart/mixart.c index 21386da3bc86..ac007cec0879 100644 --- a/sound/pci/mixart/mixart.c +++ b/sound/pci/mixart/mixart.c @@ -472,7 +472,7 @@ static int snd_mixart_prepare(struct snd_pcm_substream *subs) struct snd_mixart *chip = snd_pcm_substream_chip(subs); struct mixart_stream *stream = subs->runtime->private_data; - /* TODO de façon non bloquante, réappliquer les hw_params (rate, bits, codec) */ + /* TODO de façon non bloquante, réappliquer les hw_params (rate, bits, codec) */ snd_printdd("snd_mixart_prepare\n"); diff --git a/sound/soc/pxa/pxa2xx-ac97.h b/sound/soc/pxa/pxa2xx-ac97.h index 4c4b882316ac..b8ccfee095c4 100644 --- a/sound/soc/pxa/pxa2xx-ac97.h +++ b/sound/soc/pxa/pxa2xx-ac97.h @@ -1,5 +1,5 @@ /* - * linux/sound/arm/pxa2xx-ac97.h + * linux/sound/soc/pxa/pxa2xx-ac97.h * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 as diff --git a/sound/soc/pxa/pxa2xx-i2s.h b/sound/soc/pxa/pxa2xx-i2s.h index a2484f0881f1..4435bd9f884f 100644 --- a/sound/soc/pxa/pxa2xx-i2s.h +++ b/sound/soc/pxa/pxa2xx-i2s.h @@ -1,5 +1,5 @@ /* - * linux/sound/arm/pxa2xx-i2s.h + * linux/sound/soc/pxa/pxa2xx-i2s.h * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 as diff --git a/sound/sparc/dbri.c b/sound/sparc/dbri.c index 25a2a7333006..e07085a7cfc3 100644 --- a/sound/sparc/dbri.c +++ b/sound/sparc/dbri.c @@ -673,7 +673,7 @@ static s32 *dbri_cmdlock(struct snd_dbri * dbri, int len) } /* - * Send prepared cmd string. It works by writting a JUMP cmd into + * Send prepared cmd string. It works by writing a JUMP cmd into * the last WAIT cmd and force DBRI to reread the cmd. * The JUMP cmd points to the new cmd string. * It also releases the cmdlock spinlock. |