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* [PATCH] kernel-doc: drivers/base fixesRandy Dunlap2005-10-282-3/+4
| | | | | | | driver/base: add missing function parameters; eliminate all warnings. Signed-off-by: Randy Dunlap <rdunlap@xenotime.net> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* [PATCH] DRIVER MODEL: Get rid of the obsolete tri-level suspend/resume callbacksRussell King2005-10-281-14/+6
| | | | | | | | | | | | | | | | In PM v1, all devices were called at SUSPEND_DISABLE level. Then all devices were called at SUSPEND_SAVE_STATE level, and finally SUSPEND_POWER_DOWN level. However, with PM v2, to maintain compatibility for platform devices, I arranged for the PM v2 suspend/resume callbacks to call the old PM v1 suspend/resume callbacks three times with each level in order so that existing drivers continued to work. Since this is obsolete infrastructure which is no longer necessary, we can remove it. Here's an (untested) patch to do exactly that. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* [PATCH] drivers/base - fix sparse warningsBen Dooks2005-10-286-8/+22
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | There are a number of sparse warnings from the latest sparse snapshot being generated from the drivers/base build. The main culprits are due to the initialisation functions not being declared in a header file. Also, the firmware.c file should include <linux/device.h> to get the prototype of firmware_register() and firmware_unregister(). This patch moves the init function declerations from the init.c file to the base.h, and ensures it is included in all the relevant c sources. It also adds <linux/device.h> to the included headers for firmware.c. The patch does not solve all the sparse errors generated, but reduces the count significantly. drivers/base/core.c:161:1: warning: symbol 'devices_subsys' was not declared. Should it be static? drivers/base/core.c:417:12: warning: symbol 'devices_init' was not declared. Should it be static? drivers/base/sys.c:253:6: warning: symbol 'sysdev_shutdown' was not declared. Should it be static? drivers/base/sys.c:326:5: warning: symbol 'sysdev_suspend' was not declared. Should it be static? drivers/base/sys.c:428:5: warning: symbol 'sysdev_resume' was not declared. Should it be static? drivers/base/sys.c:450:12: warning: symbol 'system_bus_init' was not declared. Should it be static? drivers/base/bus.c:133:1: warning: symbol 'bus_subsys' was not declared. Should it be static? drivers/base/bus.c:667:12: warning: symbol 'buses_init' was not declared. Should it be static? drivers/base/class.c:759:12: warning: symbol 'classes_init' was not declared. Should it be static? drivers/base/platform.c:313:12: warning: symbol 'platform_bus_init' was not declared. Should it be static? drivers/base/cpu.c:110:12: warning: symbol 'cpu_dev_init' was not declared. Should it be static? drivers/base/firmware.c:17:5: warning: symbol 'firmware_register' was not declared. Should it be static? drivers/base/firmware.c:23:6: warning: symbol 'firmware_unregister' was not declared. Should it be static? drivers/base/firmware.c:28:12: warning: symbol 'firmware_init' was not declared. Should it be static? drivers/base/init.c:28:13: warning: symbol 'driver_init' was not declared. Should it be static? drivers/base/dmapool.c:174:10: warning: implicit cast from nocast type drivers/base/attribute_container.c:439:1: warning: symbol 'attribute_container_init' was not declared. Should it be static? drivers/base/power/runtime.c:76:6: warning: symbol 'dpm_set_power_state' was not declared. Should it be static? Signed-off-by: Ben Dooks <ben-linux@fluff.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* [PATCH] Driver Core: add the ability for class_device structures to be nestedGreg Kroah-Hartman2005-10-281-44/+81
| | | | | | | | | | | | | | | | | | This patch allows struct class_device to be nested, so that another struct class_device can be the parent of a new one, instead of only having the struct class be the parent. This will allow us to (hopefully) fix up the input and video class subsystem mess. But please people, don't go crazy and start making huge trees of class devices, you should only need 2 levels deep to get everything to work (remember to use a class_interface to get notification of a new class device being added to the system.) Oh, this also allows us to have the possibility of potentially, someday, moving /sys/block into /sys/class. The main hindrance is that pesky /dev numberspace issue... Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* [PATCH] add sysfs attr to re-emit device hotplug eventKay Sievers2005-10-282-2/+30
| | | | | | | | | | A "coldplug + udevstart" can be simple like this: for i in /sys/block/*/*/uevent; do echo 1 > $i; done for i in /sys/class/*/*/uevent; do echo 1 > $i; done for i in /sys/bus/*/devices/*/uevent; do echo 1 > $i; done Signed-off-by: Kay Sievers <kay.sievers@suse.de> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* [PATCH] Driver core: pass interface to class interface methodsDmitry Torokhov2005-10-281-4/+4
| | | | | | | | | | | Driver core: pass interface to class intreface methods Pass interface as argument to add() and remove() class interface methods. This way a subsystem can implement generic add/remove handlers and then call interface-specific ones. Signed-off-by: Dmitry Torokhov <dtor@mail.ru> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* [PATCH] Driver core: send hotplug event before adding class interfacesDmitry Torokhov2005-10-281-1/+2
| | | | | | | | | Move call to kobject_hotplug() above code that adds interfaces to a class device, otherwise children's hotplug events may reach userspace first. Signed-off-by: Dmitry Torokhov <dtor@mail.ru> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* [PATCH] driver model wakeup flagsDavid Brownell2005-10-282-0/+74
| | | | | | | | | | | | | | | | | | | | | | This is a refresh of an earlier patch to add "wakeup" support to the PM core model. This provides per-device bus-neutral control of the use of wakeup events. * "struct device_pm_info" has two bits that are initialized as part of setting up the enclosing struct device: - "can_wakeup", reflecting hardware capabilities - "may_wakeup", the policy setting (when CONFIG_PM) * There's a writeable sysfs "wakeup" file, with one of two values: - "enabled", when the policy is to allow wakeup - "disabled", when the policy is not to allow it - "" if the device can't currently issue wakeups By default, wakeup is enabled on all devices that support it. If its driver doesn't support it ... treat it as a bug. :) Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* [PATCH] gfp flags annotations - part 1Al Viro2005-10-091-3/+2
| | | | | | | | | | | | - added typedef unsigned int __nocast gfp_t; - replaced __nocast uses for gfp flags with gfp_t - it gives exactly the same warnings as far as sparse is concerned, doesn't change generated code (from gcc point of view we replaced unsigned int with typedef) and documents what's going on far better. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] fix class symlinks in sysfsBill Nottingham2005-09-221-0/+13
| | | | | | | | | | | | | | | | The class symlinks in sysfs don't properly handle changing device names. To demonstrate, rename your network device from eth0 to eth1. Your pci (or usb, or whatever) device will still have a 'net:eth0' link, except now it points to /sys/class/net/eth1. The attached patch makes sure the class symlink name changes when the class device name changes. It isn't 100% correct, it should be using sysfs_rename_link. Unfortunately, sysfs_rename_link doesn't exist. Signed-off-by: Bill Nottingham <notting@redhat.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] Driver Core: fis bus rescan devices raceDaniel Ritz2005-09-221-0/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | bus_rescan_devices_helper() does not hold the dev->sem when it checks for !dev->driver(). device_attach() holds the sem, but calls again device_bind_driver() even when dev->driver is set. What happens is that a first device_attach() call (module insertion time) is on the way binding the device to a driver. Another thread calls bus_rescan_devices(). Now when bus_rescan_devices_helper() checks for dev->driver it is still NULL 'cos the the prior device_attach() is not yet finished. But as soon as the first one releases the dev->sem the second device_attach() tries to rebind the already bound device again. device_bind_driver() does this blindly which leads to a corrupt driver->klist_devices list (the device links itself, the head points to the device). Later a call to device_release_driver() sets dev->driver to NULL and breaks the link it has to itself on knode_driver. Rmmoding the driver later calls driver_detach() which leads to an endless loop 'cos the list head in klist_devices still points to the device. And since dev->driver is NULL it's stuck with the same device forever. Boom. And rmmod hangs. Very easy to reproduce with new-style pcmcia and a 16bit card. Just loop modprobe <pcmcia-modules> ;cardctl eject; rmmod <card driver, pcmcia modules>. Easiest fix is to check if the device is already bound to a driver in device_bind_driver(). This avoids the double binding. Signed-off-by: Daniel Ritz <daniel.ritz@gmx.ch> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] drivers/base/*: use kzalloc instead of kmalloc+memsetJiri Slaby2005-09-135-18/+12
| | | | | | | | | | Fixes a bunch of memset bugs too. Signed-off-by: Lion Vollnhals <webmaster@schiggl.de> Signed-off-by: Jiri Slaby <xslaby@fi.muni.cz> Cc: Greg KH <greg@kroah.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] dmapool: Fix "nocast type" warningsVictor Fusco2005-09-101-1/+2
| | | | | | | | | Fix the sparse warning "implicit cast to nocast type" Signed-off-by: Victor Fusco <victor@cetuc.puc-rio.br> Signed-off-by: Domen Puncer <domen@coderock.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [SCSI] Re-do "final klist fixes"Linus Torvalds2005-09-081-4/+20
| | | | | With the previous commit that introduces the klist enhancements, we can now re-do 2b7d6a8cb9718fc1d9e826201b64909c44a915f4 again.
* [PATCH] fix klist semantics for lists which have elements removed on traversalJames Bottomley2005-09-083-4/+62
| | | | | | | | | | | | | | | | | | | | | The problem is that klists claim to provide semantics for safe traversal of lists which are being modified. The failure case is when traversal of a list causes element removal (a fairly common case). The issue is that although the list node is refcounted, if it is embedded in an object (which is universally the case), then the object will be freed regardless of the klist refcount leading to slab corruption because the klist iterator refers to the prior element to get the next. The solution is to make the klist take and release references to the embedding object meaning that the embedding object won't be released until the list relinquishes the reference to it. (akpm: fast-track this because it's needed for the 2.6.13 scsi merge) Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [SCSI] Revert "final klist fixes"Linus Torvalds2005-09-081-20/+4
| | | | | | | | | Revert commit 2b7d6a8cb9718fc1d9e826201b64909c44a915f4. The "fix" was known to not even compile. Duh. That's not a fix. That's just stupid. Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* Merge master.kernel.org:/pub/scm/linux/kernel/git/jejb/scsi-for-linus-2.6 Linus Torvalds2005-09-082-17/+88
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| * Merge by hand (conflicts in sd.c)James Bottomley2005-09-071-22/+45
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| | * [SCSI] attribute container final klist fixesJames Bottomley2005-08-311-4/+20
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Since the attribute container deletes from a klist while it's walking it, it is vulnerable to the problem (and fix) here: http://marc.theaimsgroup.com/?l=linux-scsi&m=112485448830217 The attached fixes this (but won't compile without the above). It also fixes the logical reversal in the traversal loop which meant that we were never actually traversing the loop to hit this bug in the first place. Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
| | * [SCSI] correct attribute_container list usageJames Bottomley2005-08-311-22/+29
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | One of the changes in the attribute_container code in the scsi-misc tree was to add a lock to protect the list of devices per container. This, unfortunately, leads to potential scheduling while atomic problems if there's a sleep in the function called by a trigger. The correct solution is to use the kernel klist infrastructure instead which allows lockless traversal of a list. Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
| * | Merge HEAD from ../scsi-misc-2.6-tmp James Bottomley2005-08-282-7/+55
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| | * [SCSI] fix transport class corner case after reworkJames Bottomley2005-08-282-1/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | If your transport class sets the ATTRIBUTE_CONTAINER_NO_CLASSDEVS flag, then its configure method never gets called. This patch fixes that so that the configure method is called with a NULL classdev. Also remove a spurious inverted comma in the transport_class comments. Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
| | * [SCSI] correct transport class abstraction to work outside SCSIJames Bottomley2005-08-152-6/+49
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | I recently tried to construct a totally generic transport class and found there were certain features missing from the current abstract transport class. Most notable is that you have to hang the data on the class_device but most of the API is framed in terms of the generic device, not the class_device. These changes are two fold - Provide the class_device to all of the setup and configure APIs - Provide and extra API to take the device and the attribute class and return the corresponding class_device Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
* | | [PATCH] modified firmware_class.c to support no hotplugAbhay Salunke2005-09-081-29/+50
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Upgrade the request_firmware_nowait function to not start the hotplug action on a firmware update. This patch is tested along with dell_rbu driver on i386 and x86-64 systems. Signed-off-by: Abhay Salunke <Abhay_Salunke@dell.com> Cc: Greg KH <greg@kroah.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | | [PATCH] klist: fix klist to have the same klist_add semantics as list_headJames Bottomley2005-09-063-4/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | at the moment, the list_head semantics are list_add(node, head) whereas current klist semantics are klist_add(head, node) This is bound to cause confusion, and since klist is the newcomer, it should follow the list_head semantics. I also added missing include guards to klist.h Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* | | [PATCH] Driver core: small cleanup; remove check for NULL before kfree() in ↵Jesper Juhl2005-09-061-4/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | driver core Remove needless checking of variable for NULL before calling kfree() on it. Applies to 2.6.13-rc6-git9 Signed-off-by: Jesper Juhl <jesper.juhl@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* | | [PATCH] Driver core: hande sysdev suspend failureShaohua Li2005-09-061-25/+85
| | | | | | | | | | | | | | | | | | | | | | | | | | | This patch adds the return value check for sysdev suspend and does restore in failure case. Send the patch to pm-list, but seems lost, so I resend it. Signed-off-by: Shaohua Li<shaohua.li@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* | | [PATCH] Driver core: link device and all class devices derived from it.Dmitry Torokhov2005-09-061-2/+31
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Driver core: link device and all class devices derived from it. To ease the task of locating class devices derived from a certain device create symlinks from parent device to its class devices. Change USB host class device name from usbX to usb_hostX to avoid conflict when creating aforementioned links. Tweaked by Greg to have the symlink be "class_name:class_device_name" in order to prevent duplicate links. Signed-off-by: Dmitry Torokhov <dtor@mail.ru> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* | | [PATCH] Fix manual binding infinite loopGreg Kroah-Hartman2005-09-061-1/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Fix for manual binding of drivers to devices. Problem is if you pass in a valid device id, but the driver refuses to bind. Infinite loop as write() tries to resubmit the data it just sent. Thanks to Michal Ostrowski <mostrows@watson.ibm.com> for pointing the problem out. Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* | | [PATCH] swsusp: switch pm_message_t to structPavel Machek2005-09-054-18/+18
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This adds type-checking to pm_message_t, so that people can't confuse it with int or u32. It also allows us to fix "disk yoyo" during suspend (disk spinning down/up/down). [We've tried that before; since that cpufreq problems were fixed and I've tried make allyes config and fixed resulting damage.] Signed-off-by: Pavel Machek <pavel@suse.cz> Signed-off-by: Alexander Nyberg <alexn@telia.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | | [PATCH] VM: add page_state info to per-node meminfoMartin Hicks2005-09-051-2/+22
|/ / | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add page_state info to the per-node meminfo file in sysfs. This is mostly just for informational purposes. The lack of this information was brought up recently during a discussion regarding pagecache clearing, and I put this patch together to test out one of the suggestions. It seems like interesting info to have, so I'm submitting the patch. Signed-off-by: Martin Hicks <mort@sgi.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | [PATCH] Fix manual binding infinite loopGreg KH2005-08-181-1/+3
| | | | | | | | | | | | | | | | | | | | | | | | Fix for manual binding of drivers to devices. Problem is if you pass in a valid device id, but the driver refuses to bind. Infinite loop as write() tries to resubmit the data it just sent. Thanks to Michal Ostrowski <mostrows@watson.ibm.com> for pointing the problem out. Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | [PATCH] Driver core: potentially fix use after free in class_device_attr_showManeesh Soni2005-08-171-4/+6
|/ | | | | | | | | | | | | This moves the code to free devt_attr from class_device_del() to class_dev_release() which is called after the last reference to the corresponding kobject() is gone. This allows us to keep the devt_attr alive while the corresponding sysfs file is open. Signed-off-by: Maneesh Soni <maneesh@in.ibm.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [ACPI] merge acpi-2.6.12 branch into latest Linux 2.6.13-rc...Len Brown2005-07-121-1/+0
|\ | | | | | | Signed-off-by: Len Brown <len.brown@intel.com>
| * [ACPI] ACPI poweroff fixAlexey Starikovskiy2005-07-121-1/+0
| | | | | | | | | | | | | | | | | | | | | | Register an "acpi" system device to be notified of shutdown preparation. This depends on CONFIG_PM http://bugzilla.kernel.org/show_bug.cgi?id=4041 Signed-off-by: Alexey Starikovskiy <alexey.y.starikovskiy@intel.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Len Brown <len.brown@intel.com>
* | [PATCH] Driver core: Use klist_del() instead of klist_remove().Patrick Mochel2005-06-301-1/+1
| | | | | | | | | | | | | | | | | | Use klist_del() instead of klist_remove() when unregistering devices. This will prevent a deadlock when executing a recursive unregister using device_for_each_child(). Signed-off-by Patrick Mochel <mochel@digitalimplant.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* | [PATCH] driver core: change bus_rescan_devices to return voidGreg Kroah-Hartman2005-06-301-18/+9
| | | | | | | | | | | | | | | | No one was looking at the return value of bus_rescan_devices, and it really wasn't anything that anyone in the kernel would ever care about. So change it which enabled some counting code to be removed also. Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* | [PATCH] driver core: Add the ability to bind drivers to devices from userspaceGreg Kroah-Hartman2005-06-303-1/+28
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This adds a single file, "bind", to the sysfs directory of every driver registered with the driver core. To bind a device to a driver, write the bus id of the device you wish to bind to that specific driver to the "bind" file (remember to not add a trailing \n). If that bus id matches a device on that bus, and it does not currently have a driver bound to it, the probe sequence will be initiated with that driver and device. Note, this requires that the driver itself be willing and able to accept that device (usually through a device id type table). This patch does not make it possible to override the driver's id table. Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* | [PATCH] driver core: Add the ability to unbind drivers to devices from userspaceGreg Kroah-Hartman2005-06-301-0/+30
| | | | | | | | | | | | | | | | | | This adds a single file, "unbind", to the sysfs directory of every device that is currently bound to a driver. To unbind the driver from the device, write anything to this file and they will be disconnected from each other. Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* | [PATCH] driver core: add bus_find_device & driver_find_device functionsCornelia Huck2005-06-302-0/+69
| | | | | | | | | | | | | | | | Add bus_find_device() and driver_find_device() which allow searching for a device in the bus's resp. the driver's klist and obtain a reference on it. Signed-off-by: Cornelia Huck <cohuck@de.ibm.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* | [PATCH] request_firmware(): avoid race conditionsStanislaw W. Gruszka2005-06-291-3/+10
| | | | | | | | | | | | | | | | | | | | Avoid race occurs when some process have open file descriptor for class device attributes and already firmware allocated memory are freed. Don't allow negative loading timeout. Signed-off-by: Stanislaw W. Gruszka <stf_xl@wp.pl> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | [PATCH] generate hotplug events for cpu onlineNathan Lynch2005-06-261-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | We already do kobject_hotplug for cpu offline; this adds a kobject_hotplug call for the online case. This is being requested by developers of an application which wants to be notified about both kinds of events. Signed-off-by: Nathan Lynch <ntl@pobox.com> Cc: Rusty Russell <rusty@rustcorp.com.au> Cc: Greg KH <greg@kroah.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | [PATCH] make smp_prepare_cpu to a weak functionAshok Raj2005-06-261-4/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | I really wish smp_prepare_cpu() would disappear eventually. In the interim this is ideally a weak function, so we dont end up changing several places to define this dummy in headers. Today since the dummy declaration is done only in drivers/base/cpu.c but the function is called in kernel/power/smp.c i get undefined reference in my cpu hotplug code for x86_64 under development. Signed-off-by: Ashok Raj <ashok.raj@intel.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | [PATCH] cpu state clean after hot removeLi Shaohua2005-06-261-1/+7
| | | | | | | | | | | | | | | | Clean CPU states in order to reuse smp boot code for CPU hotplug. Signed-off-by: Li Shaohua<shaohua.li@intel.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | [PATCH] driver core: Fix up the device_attach() error handling in ↵Greg Kroah-Hartman2005-06-231-3/+2
| | | | | | | | | | | | | | | | | | | | bus_add_device() Don't error out if something "bad" happens when trying to bind a driver to a device. We want the sysfs attributes to be present for later when we try to tear down the device. Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* | [PATCH] node local per-cpu-pagesChristoph Lameter2005-06-221-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch modifies the way pagesets in struct zone are managed. Each zone has a per-cpu array of pagesets. So any particular CPU has some memory in each zone structure which belongs to itself. Even if that CPU is not local to that zone. So the patch relocates the pagesets for each cpu to the node that is nearest to the cpu instead of allocating the pagesets in the (possibly remote) target zone. This means that the operations to manage pages on remote zone can be done with information available locally. We play a macro trick so that non-NUMA pmachines avoid the additional pointer chase on the page allocator fastpath. AIM7 benchmark on a 32 CPU SGI Altix w/o patches: Tasks jobs/min jti jobs/min/task real cpu 1 484.68 100 484.6769 12.01 1.97 Fri Mar 25 11:01:42 2005 100 27140.46 89 271.4046 21.44 148.71 Fri Mar 25 11:02:04 2005 200 30792.02 82 153.9601 37.80 296.72 Fri Mar 25 11:02:42 2005 300 32209.27 81 107.3642 54.21 451.34 Fri Mar 25 11:03:37 2005 400 34962.83 78 87.4071 66.59 588.97 Fri Mar 25 11:04:44 2005 500 31676.92 75 63.3538 91.87 742.71 Fri Mar 25 11:06:16 2005 600 36032.69 73 60.0545 96.91 885.44 Fri Mar 25 11:07:54 2005 700 35540.43 77 50.7720 114.63 1024.28 Fri Mar 25 11:09:49 2005 800 33906.70 74 42.3834 137.32 1181.65 Fri Mar 25 11:12:06 2005 900 34120.67 73 37.9119 153.51 1325.26 Fri Mar 25 11:14:41 2005 1000 34802.37 74 34.8024 167.23 1465.26 Fri Mar 25 11:17:28 2005 with slab API changes and pageset patch: Tasks jobs/min jti jobs/min/task real cpu 1 485.00 100 485.0000 12.00 1.96 Fri Mar 25 11:46:18 2005 100 28000.96 89 280.0096 20.79 150.45 Fri Mar 25 11:46:39 2005 200 32285.80 79 161.4290 36.05 293.37 Fri Mar 25 11:47:16 2005 300 40424.15 84 134.7472 43.19 438.42 Fri Mar 25 11:47:59 2005 400 39155.01 79 97.8875 59.46 590.05 Fri Mar 25 11:48:59 2005 500 37881.25 82 75.7625 76.82 730.19 Fri Mar 25 11:50:16 2005 600 39083.14 78 65.1386 89.35 872.79 Fri Mar 25 11:51:46 2005 700 38627.83 77 55.1826 105.47 1022.46 Fri Mar 25 11:53:32 2005 800 39631.94 78 49.5399 117.48 1169.94 Fri Mar 25 11:55:30 2005 900 36903.70 79 41.0041 141.94 1310.78 Fri Mar 25 11:57:53 2005 1000 36201.23 77 36.2012 160.77 1458.31 Fri Mar 25 12:00:34 2005 Signed-off-by: Christoph Lameter <clameter@sgi.com> Signed-off-by: Shobhit Dayal <shobhit@calsoftinc.com> Signed-off-by: Shai Fultheim <Shai@Scalex86.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | [PATCH] Driver core: Don't "lose" devices on suspend on failureBenjamin Herrenschmidt2005-06-211-1/+12
| | | | | | | | | | | | | | | | I think we need this patch or we might "lose" devices to the dpm_irq_off list if a failure occurs during the suspend process. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* | [PATCH] Driver Core: drivers/base - drivers/i2c/chips/adm1026.c: update ↵Yani Ioannou2005-06-212-3/+3
| | | | | | | | | | | | | | device attribute callbacks Signed-off-by: Yani Ioannou <yani.ioannou@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* | [PATCH] Driver core: change device_attribute callbacksYani Ioannou2005-06-211-2/+2
| | | | | | | | | | | | | | | | | | This patch adds the device_attribute paramerter to the device_attribute store and show sysfs callback functions, and passes a reference to the attribute when the callbacks are called. Signed-off-by: Yani Ioannou <yani.ioannou@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* | [PATCH] driver core: fix error handling in bus_add_deviceHannes Reinecke2005-06-212-6/+10
| | | | | | | | | | | | | | | | | | The error handling in bus_add_device() and device_attach() is simply non-existing. This patch propagates any error from device_attach to the upper layers to allow for a proper recovery. From: Hannes Reinecke <hare@suse.de> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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