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* Merge tag 'rtc-v4.2-1' of ↵Linus Torvalds2015-06-263-36/+1
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux Pull RTC updates from Alexandre Belloni: "Core: - Coding style and whitespace fixes (interface, Makefile and Kconfig) - New rtc_tm_sub() helper - New CONFIG_RTC_SYSTOHC_DEVICE option - Removed rtc_set_mmss() New drivers: - Mediatek MT6397 - Cortina Gemini Drivers: - Year 2106 fixes for isl1208, pcf8563 and sunxi - update author email for at32ap700x and efi - ds1307: alarm fix - efi: use correct EFI 'epoch' - hym8563: make irq optional - imxdi: cleanups and better handling of the security/tamper monitoring - snvs: fix wakealarm - Compilation fixes or warning removal for gemini, mt6397, palmas, pfc8563 - Trivial cleanups for ab8500, ds1216, ds1286, ds1672, ep93xx, hid-sensor-time, max6900, max8998, max77686, max77802, mc13xxx, mv, mxc, s3c, spear, v3020 - Kconfig fixes for stmp3xxx and xgene" * tag 'rtc-v4.2-1' of git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux: (48 commits) rtc: remove useless I2C dependencies rtc: whitespace fixes rtc: Properly sort Makefile MAINTAINERS: Add RTC subsystem repository rtc: pfc8563: fix uninitialized variable warning rtc: ds1307: Enable the mcp794xx alarm after programming time rtc: hym8563: make the irq optional rtc: gemini: fix cocci warnings rtc: mv: correct 24 hour error message rtc: mv: use BIT() rtc: efi: use correct EFI 'epoch' rtc: interface: Remove rtc_set_mmss() sparc: time: Replace update_persistent_clock() with CONFIG_RTC_SYSTOHC rtc: NTP: Add CONFIG_RTC_SYSTOHC_DEVICE for NTP synchronization rtc: sunxi: Replace deprecated rtc_tm_to_time() rtc: isl1208: Replace deprecated rtc_tm_to_time() rtc: Introduce rtc_tm_sub() helper function rtc: pcf8563: Replace deprecated rtc_time_to_tm() and rtc_tm_to_time() rtc: palmas: Initialise bb_charging flag before using it rtc: simplify use of devm_ioremap_resource ...
| * sparc: time: Replace update_persistent_clock() with CONFIG_RTC_SYSTOHCXunlei Pang2015-06-253-36/+1
| | | | | | | | | | | | | | | | | | | | | | | | On Sparc systems, update_persistent_clock() uses RTC drivers to do the job, it makes more sense to hand it over to CONFIG_RTC_SYSTOHC. In the long run, all the update_persistent_clock() should migrate to proper class RTC drivers if any and use CONFIG_RTC_SYSTOHC instead. Signed-off-by: Xunlei Pang <pang.xunlei@linaro.org> Acked-by: David S. Miller <davem@davemloft.net> Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
* | Merge branch 'i2c/for-4.2' of ↵Linus Torvalds2015-06-261-55/+0
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux Pull i2c updates from Wolfram Sang: "Highlights: - new drivers for Mediatek I2C, APM X-Gene, Broadcom Settop - major updates to at91, davinci - bugfixes to the mux infrastructure when dealing with the new quirk mechanism - more users for the bus recovery feature - further improvements to the slave framework Plus the usual bunch of smaller driver and core improvements and fixes. There is one patch removing old code from an ARM platform. This has been acked by the sh_mobile maintainer Simon Horman" * 'i2c/for-4.2' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux: (48 commits) i2c: busses: i2c-bcm2835: limits cdiv to allowed values i2c: sh_mobile: use proper type for timeout i2c: sh_mobile: use adapter default for timeout i2c: rcar: use proper type for timeout i2c: rcar: use adapter default for timeout i2c: designware: Make sure the device is suspended before disabling runtime PM i2c: tegra: apply size limit quirk i2c: tegra: don't advertise SMBUS_QUICK i2c: octeon: remove unused signal handling i2c: davinci: Optimize SCL generation i2c: mux: pca954x: Use __i2c_transfer because of quirks i2c: mux: Use __i2c_transfer() instead of calling parent's master_xfer() i2c: use parent adapter quirks in mux i2c: bcm2835: clear reserved bits in S-Register ARM: shmobile: r8a7740: remove I2C errata handling i2c: sh_mobile: add errata workaround i2c: at91: fix code checker warnings i2c: busses: xgene-slimpro: fix incorrect __init declation for probe i2c: davinci: Avoid sending to own address i2c: davinci: Refactor i2c_davinci_wait_bus_not_busy() ...
| * | ARM: shmobile: r8a7740: remove I2C errata handlingWolfram Sang2015-06-171-55/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This is now done in the I2C driver. Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com> Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Acked-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> Acked-by: Simon Horman <horms+renesas@verge.net.au> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
* | | Merge branch 'for-4.2/sg' of git://git.kernel.dk/linux-blockLinus Torvalds2015-06-2650-50/+20
|\ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull asm/scatterlist.h removal from Jens Axboe: "We don't have any specific arch scatterlist anymore, since parisc finally switched over. Kill the include" * 'for-4.2/sg' of git://git.kernel.dk/linux-block: remove scatterlist.h generation from arch Kbuild files remove <asm/scatterlist.h>
| * | | remove scatterlist.h generation from arch Kbuild filesChristoph Hellwig2015-05-1930-30/+0
| | | | | | | | | | | | | | | | | | | | | | | | Signed-off-by: Christoph Hellwig <hch@lst.de> Reported-by: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: Jens Axboe <axboe@fb.com>
| * | | remove <asm/scatterlist.h>Christoph Hellwig2015-05-0520-20/+20
| |/ / | | | | | | | | | | | | | | | | | | | | | We don't have any arch specific scatterlist now that parisc switched over to the generic one. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jens Axboe <axboe@fb.com>
* | | Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparcLinus Torvalds2015-06-253-5/+46
|\ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull sparc fixes from David Miller: "Sparc perf stack traversal fixes from David Ahern" * git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc: sparc64: perf: Use UREG_FP rather than UREG_I6 sparc64: perf: Add sanity checking on addresses in user stack sparc64: Convert BUG_ON to warning sparc: perf: Disable pagefaults while walking userspace stacks
| * | | sparc64: perf: Use UREG_FP rather than UREG_I6David Ahern2015-06-251-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | perf walks userspace callchains by following frame pointers. Use the UREG_FP macro to make it clearer that the %fp is being used. Signed-off-by: David Ahern <david.ahern@oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | | sparc64: perf: Add sanity checking on addresses in user stackDavid Ahern2015-06-252-0/+35
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Processes are getting killed (sigbus or segv) while walking userspace callchains when using perf. In some instances I have seen ufp = 0x7ff which does not seem like a proper stack address. This patch adds a function to run validity checks against the address before attempting the copy_from_user. The checks are copied from the x86 version as a start point with the addition of a 4-byte alignment check. Signed-off-by: David Ahern <david.ahern@oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | | sparc64: Convert BUG_ON to warningDavid Ahern2015-06-251-2/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pagefault handling has a BUG_ON path that panics the system. Convert it to a warning instead. There is no need to bring down the system for this kind of failure. The following was hit while running: perf sched record -g -- make -j 16 [3609412.782801] kernel BUG at /opt/dahern/linux.git/arch/sparc/mm/fault_64.c:416! [3609412.782833] \|/ ____ \|/ [3609412.782833] "@'/ .. \`@" [3609412.782833] /_| \__/ |_\ [3609412.782833] \__U_/ [3609412.782870] cat(4516): Kernel bad sw trap 5 [#1] [3609412.782889] CPU: 0 PID: 4516 Comm: cat Tainted: G E 4.1.0-rc8+ #6 [3609412.782909] task: fff8000126e31f80 ti: fff8000110d90000 task.ti: fff8000110d90000 [3609412.782931] TSTATE: 0000004411001603 TPC: 000000000096b164 TNPC: 000000000096b168 Y: 0000004e Tainted: G E [3609412.782964] TPC: <do_sparc64_fault+0x5e4/0x6a0> [3609412.782979] g0: 000000000096abe0 g1: 0000000000d314c4 g2: 0000000000000000 g3: 0000000000000001 [3609412.783009] g4: fff8000126e31f80 g5: fff80001302d2000 g6: fff8000110d90000 g7: 00000000000000ff [3609412.783045] o0: 0000000000aff6a8 o1: 00000000000001a0 o2: 0000000000000001 o3: 0000000000000054 [3609412.783080] o4: fff8000100026820 o5: 0000000000000001 sp: fff8000110d935f1 ret_pc: 000000000096b15c [3609412.783117] RPC: <do_sparc64_fault+0x5dc/0x6a0> [3609412.783137] l0: 000007feff996000 l1: 0000000000030001 l2: 0000000000000004 l3: fff8000127bd0120 [3609412.783174] l4: 0000000000000054 l5: fff8000127bd0188 l6: 0000000000000000 l7: fff8000110d9dba8 [3609412.783210] i0: fff8000110d93f60 i1: fff8000110ca5530 i2: 000000000000003f i3: 0000000000000054 [3609412.783244] i4: fff800010000081a i5: fff8000100000398 i6: fff8000110d936a1 i7: 0000000000407c6c [3609412.783286] I7: <sparc64_realfault_common+0x10/0x20> [3609412.783308] Call Trace: [3609412.783329] [0000000000407c6c] sparc64_realfault_common+0x10/0x20 [3609412.783353] Disabling lock debugging due to kernel taint [3609412.783379] Caller[0000000000407c6c]: sparc64_realfault_common+0x10/0x20 [3609412.783449] Caller[fff80001002283e4]: 0xfff80001002283e4 [3609412.783471] Instruction DUMP: 921021a0 7feaff91 901222a8 <91d02005> 82086100 02f87f7b 808a2873 81cfe008 01000000 [3609412.783542] Kernel panic - not syncing: Fatal exception [3609412.784605] Press Stop-A (L1-A) to return to the boot prom [3609412.784615] ---[ end Kernel panic - not syncing: Fatal exception With this patch rather than a panic I occasionally get something like this: perf sched record -g -m 1024 -- make -j N where N is based on number of cpus (128 to 1024 for a T7-4 and 8 for an 8 cpu VM on a T5-2). WARNING: CPU: 211 PID: 52565 at /opt/dahern/linux.git/arch/sparc/mm/fault_64.c:417 do_sparc64_fault+0x340/0x70c() address (7feffcd6000) != regs->tpc (fff80001004873c0) Modules linked in: ipt_REJECT nf_reject_ipv4 nf_conntrack_ipv4 nf_defrag_ipv4 iptable_filter ip_tables ip6t_REJECT nf_reject_ipv6 xt_tcpudp nf_conntrack_ipv6 nf_defrag_ipv6 xt_state nf_conntrack ip6table_filter ip6_tables x_tables ipv6 cdc_ether usbnet mii ixgbe mdio igb i2c_algo_bit i2c_core ptp crc32c_sparc64 camellia_sparc64 des_sparc64 des_generic md5_sparc64 sha512_sparc64 sha1_sparc64 uio_pdrv_genirq uio usb_storage mpt3sas scsi_transport_sas raid_class aes_sparc64 sunvnet sunvdc sha256_sparc64(E) sha256_generic(E) CPU: 211 PID: 52565 Comm: ld Tainted: G W E 4.1.0-rc8+ #19 Call Trace: [000000000045ce30] warn_slowpath_common+0x7c/0xa0 [000000000045ceec] warn_slowpath_fmt+0x30/0x40 [000000000098ad64] do_sparc64_fault+0x340/0x70c [0000000000407c2c] sparc64_realfault_common+0x10/0x20 ---[ end trace 62ee02065a01a049 ]--- ld[52565]: segfault at fff80001004873c0 ip fff80001004873c0 (rpc fff8000100158868) sp 000007feffcd70e1 error 30002 in libc-2.12.so[fff8000100410000+184000] The segfault is horrible, but better than a system panic. An 8-cpu VM on a T5-2 also showed the above traces from time to time, so it is a general problem and not specific to the T7 or baremetal. Signed-off-by: David Ahern <david.ahern@oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | | sparc: perf: Disable pagefaults while walking userspace stacksDavid Ahern2015-06-251-1/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Page faults generated walking userspace stacks can call schedule to switch out the task. When collecting callchains for scheduler tracepoints this causes a deadlock as the tracepoints can be hit with the runqueue lock held: [ 8138.159054] WARNING: CPU: 758 PID: 12488 at /opt/dahern/linux.git/arch/sparc/kernel/nmi.c:80 perfctr_irq+0x1f8/0x2b4() [ 8138.203152] Watchdog detected hard LOCKUP on cpu 758 [ 8138.410969] CPU: 758 PID: 12488 Comm: perf Not tainted 4.0.0-rc6+ #6 [ 8138.437146] Call Trace: [ 8138.447193] [000000000045cdd4] warn_slowpath_common+0x7c/0xa0 [ 8138.471238] [000000000045ce90] warn_slowpath_fmt+0x30/0x40 [ 8138.494189] [0000000000983e38] perfctr_irq+0x1f8/0x2b4 [ 8138.515716] [00000000004209f4] tl0_irq15+0x14/0x20 [ 8138.535791] [00000000009839ec] _raw_spin_trylock_bh+0x68/0x108 [ 8138.560180] [0000000000980018] __schedule+0xcc/0x710 [ 8138.580981] [00000000009806dc] preempt_schedule_common+0x10/0x3c [ 8138.606082] [000000000098077c] _cond_resched+0x34/0x44 [ 8138.627603] [0000000000565990] kmem_cache_alloc_node+0x24/0x1a0 [ 8138.652345] [0000000000450b60] tsb_grow+0xac/0x488 [ 8138.672429] [0000000000985040] do_sparc64_fault+0x4dc/0x6e4 [ 8138.695736] [0000000000407c2c] sparc64_realfault_common+0x10/0x20 [ 8138.721202] [00000000006f2e24] NG4copy_from_user+0xa4/0x3c0 [ 8138.744510] [000000000044f900] perf_callchain_user+0x5c/0x6c [ 8138.768182] [0000000000517b5c] perf_callchain+0x16c/0x19c [ 8138.790774] [0000000000515f84] perf_prepare_sample+0x68/0x218 [ 8138.814801] ---[ end trace 42ca6294b1ff7573 ]--- As with PowerPC (b59a1bfcc240, "powerpc/perf: Disable pagefaults during callchain stack read") disable pagefaults while walking userspace stacks. Signed-off-by: David Ahern <david.ahern@oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* | | | Merge tag 'for-4.2' of git://git.sourceforge.jp/gitroot/uclinux-h8/linuxLinus Torvalds2015-06-2593-0/+6183
|\ \ \ \ | |/ / / |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull Renesas H8/300 architecture re-introduction from Yoshinori Sato. We dropped arch/h8300 two years ago as stale and old, this is a new and more modern rewritten arch support for the same architecture. * tag 'for-4.2' of git://git.sourceforge.jp/gitroot/uclinux-h8/linux: (27 commits) h8300: fix typo. h8300: Always build dtb h8300: Remove ARCH_WANT_IPC_PARSE_VERSION sh-sci: Get register size from platform device clk: h8300: fix error handling in h8s2678_pll_clk_setup() h8300: Symbol name fix h8300: devicetree source h8300: configs h8300: IRQ chip driver h8300: clocksource h8300: clock driver h8300: Build scripts h8300: library functions h8300: Memory management h8300: miscellaneous functions h8300: process helpers h8300: compressed image support h8300: Low level entry h8300: kernel startup h8300: Interrupt and exceptions ...
| * | | h8300: Always build dtbYoshinori Sato2015-06-231-1/+2
| | | | | | | | | | | | | | | | Signed-off-by: Yoshinori Sato <ysato@users.sourceforge.jp>
| * | | h8300: Remove ARCH_WANT_IPC_PARSE_VERSIONYoshinori Sato2015-06-231-1/+0
| | | | | | | | | | | | | | | | Signed-off-by: Yoshinori Sato <ysato@users.sourceforge.jp>
| * | | h8300: Symbol name fixYoshinori Sato2015-06-231-1/+1
| | | | | | | | | | | | | | | | Signed-off-by: Yoshinori Sato <ysato@users.sourceforge.jp>
| * | | h8300: devicetree sourceYoshinori Sato2015-06-234-0/+313
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | - h8300h_sim: GDB H8/300H simulator - h8s_sim: GDB H8S simulator - edosk2674: Renesas EDOSK2674R Evalution board Signed-off-by: Yoshinori Sato <ysato@users.sourceforge.jp>
| * | | h8300: configsYoshinori Sato2015-06-233-0/+147
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | h8300h-sim_defconfig: GDB simulator H8/300H mode. h8s-sim_defconfig: GDB simulator H8S mode. edosk2674_defconfig: Renesas EDOSK2674R. Signed-off-by: Yoshinori Sato <ysato@users.sourceforge.jp>
| * | | h8300: Build scriptsYoshinori Sato2015-06-235-0/+317
| | | | | | | | | | | | | | | | | | | | | | | | h8300's Makefile, Kconfig and memory layout. Signed-off-by: Yoshinori Sato <ysato@users.sourceforge.jp>
| * | | h8300: library functionsYoshinori Sato2015-06-2316-0/+723
| | | | | | | | | | | | | | | | Signed-off-by: Yoshinori Sato <ysato@users.sourceforge.jp>
| * | | h8300: Memory managementYoshinori Sato2015-06-234-0/+243
| | | | | | | | | | | | | | | | Signed-off-by: Yoshinori Sato <ysato@users.sourceforge.jp>
| * | | h8300: miscellaneous functionsYoshinori Sato2015-06-236-0/+335
| | | | | | | | | | | | | | | | Signed-off-by: Yoshinori Sato <ysato@users.sourceforge.jp>
| * | | h8300: process helpersYoshinori Sato2015-06-234-0/+674
| | | | | | | | | | | | | | | | Signed-off-by: Yoshinori Sato <ysato@users.sourceforge.jp>
| * | | h8300: compressed image supportYoshinori Sato2015-06-236-0/+226
| | | | | | | | | | | | | | | | Signed-off-by: Yoshinori Sato <ysato@users.sourceforge.jp>
| * | | h8300: Low level entryYoshinori Sato2015-06-233-0/+584
| | | | | | | | | | | | | | | | Signed-off-by: Yoshinori Sato <ysato@users.sourceforge.jp>
| * | | h8300: kernel startupYoshinori Sato2015-06-231-0/+255
| | | | | | | | | | | | | | | | Signed-off-by: Yoshinori Sato <ysato@users.sourceforge.jp>
| * | | h8300: Interrupt and exceptionsYoshinori Sato2015-06-233-0/+547
| | | | | | | | | | | | | | | | Signed-off-by: Yoshinori Sato <ysato@users.sourceforge.jp>
| * | | h8300: UAPI headersYoshinori Sato2015-06-236-0/+214
| | | | | | | | | | | | | | | | Signed-off-by: Yoshinori Sato <ysato@users.sourceforge.jp>
| * | | h8300: Assembly headersYoshinori Sato2015-06-2332-0/+1605
| | | | | | | | | | | | | | | | Signed-off-by: Yoshinori Sato <ysato@users.sourceforge.jp>
* | | | Merge branch 'akpm' (patches from Andrew)Linus Torvalds2015-06-2571-202/+642
|\ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Merge first patchbomb from Andrew Morton: - a few misc things - ocfs2 udpates - kernel/watchdog.c feature work (took ages to get right) - most of MM. A few tricky bits are held up and probably won't make 4.2. * emailed patches from Andrew Morton <akpm@linux-foundation.org>: (91 commits) mm: kmemleak_alloc_percpu() should follow the gfp from per_alloc() mm, thp: respect MPOL_PREFERRED policy with non-local node tmpfs: truncate prealloc blocks past i_size mm/memory hotplug: print the last vmemmap region at the end of hot add memory mm/mmap.c: optimization of do_mmap_pgoff function mm: kmemleak: optimise kmemleak_lock acquiring during kmemleak_scan mm: kmemleak: avoid deadlock on the kmemleak object insertion error path mm: kmemleak: do not acquire scan_mutex in kmemleak_do_cleanup() mm: kmemleak: fix delete_object_*() race when called on the same memory block mm: kmemleak: allow safe memory scanning during kmemleak disabling memcg: convert mem_cgroup->under_oom from atomic_t to int memcg: remove unused mem_cgroup->oom_wakeups frontswap: allow multiple backends x86, mirror: x86 enabling - find mirrored memory ranges mm/memblock: allocate boot time data structures from mirrored memory mm/memblock: add extra "flags" to memblock to allow selection of memory based on attribute mm: do not ignore mapping_gfp_mask in page cache allocation paths mm/cma.c: fix typos in comments mm/oom_kill.c: print points as unsigned int mm/hugetlb: handle races in alloc_huge_page and hugetlb_reserve_pages ...
| * | | | x86, mirror: x86 enabling - find mirrored memory rangesTony Luck2015-06-252-0/+24
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | UEFI GetMemoryMap() uses a new attribute bit to mark mirrored memory address ranges. See UEFI 2.5 spec pages 157-158: http://www.uefi.org/sites/default/files/resources/UEFI%202_5.pdf On EFI enabled systems scan the memory map and tell memblock about any mirrored ranges. Signed-off-by: Tony Luck <tony.luck@intel.com> Cc: Xishi Qiu <qiuxishi@huawei.com> Cc: Hanjun Guo <guohanjun@huawei.com> Cc: Xiexiuqi <xiexiuqi@huawei.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: Yinghai Lu <yinghai@kernel.org> Cc: Naoya Horiguchi <nao.horiguchi@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| * | | | mm/memblock: add extra "flags" to memblock to allow selection of memory ↵Tony Luck2015-06-255-7/+12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | based on attribute Some high end Intel Xeon systems report uncorrectable memory errors as a recoverable machine check. Linux has included code for some time to process these and just signal the affected processes (or even recover completely if the error was in a read only page that can be replaced by reading from disk). But we have no recovery path for errors encountered during kernel code execution. Except for some very specific cases were are unlikely to ever be able to recover. Enter memory mirroring. Actually 3rd generation of memory mirroing. Gen1: All memory is mirrored Pro: No s/w enabling - h/w just gets good data from other side of the mirror Con: Halves effective memory capacity available to OS/applications Gen2: Partial memory mirror - just mirror memory begind some memory controllers Pro: Keep more of the capacity Con: Nightmare to enable. Have to choose between allocating from mirrored memory for safety vs. NUMA local memory for performance Gen3: Address range partial memory mirror - some mirror on each memory controller Pro: Can tune the amount of mirror and keep NUMA performance Con: I have to write memory management code to implement The current plan is just to use mirrored memory for kernel allocations. This has been broken into two phases: 1) This patch series - find the mirrored memory, use it for boot time allocations 2) Wade into mm/page_alloc.c and define a ZONE_MIRROR to pick up the unused mirrored memory from mm/memblock.c and only give it out to select kernel allocations (this is still being scoped because page_alloc.c is scary). This patch (of 3): Add extra "flags" to memblock to allow selection of memory based on attribute. No functional changes Signed-off-by: Tony Luck <tony.luck@intel.com> Cc: Xishi Qiu <qiuxishi@huawei.com> Cc: Hanjun Guo <guohanjun@huawei.com> Cc: Xiexiuqi <xiexiuqi@huawei.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: Yinghai Lu <yinghai@kernel.org> Cc: Naoya Horiguchi <nao.horiguchi@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| * | | | mm: clarify that the function operates on hugepage pteAneesh Kumar K.V2015-06-257-31/+31
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | We have confusing functions to clear pmd, pmd_clear_* and pmd_clear. Add _huge_ to pmdp_clear functions so that we are clear that they operate on hugepage pte. We don't bother about other functions like pmdp_set_wrprotect, pmdp_clear_flush_young, because they operate on PTE bits and hence indicate they are operating on hugepage ptes Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Acked-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Andrea Arcangeli <aarcange@redhat.com> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| * | | | powerpc/mm: use generic version of pmdp_clear_flush()Aneesh Kumar K.V2015-06-253-15/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Also move the pmd_trans_huge check to generic code. Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Acked-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Andrea Arcangeli <aarcange@redhat.com> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| * | | | mm/thp: split out pmd collapse flush into separate functionsAneesh Kumar K.V2015-06-252-35/+45
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Architectures like ppc64 [1] need to do special things while clearing pmd before a collapse. For them this operation is largely different from a normal hugepage pte clear. Hence add a separate function to clear pmd before collapse. After this patch pmdp_* functions operate only on hugepage pte, and not on regular pmd_t values pointing to page table. [1] ppc64 needs to invalidate all the normal page pte mappings we already have inserted in the hardware hash page table. But before doing that we need to make sure there are no parallel hash page table insert going on. So we need to do a kick_all_cpus_sync() before flushing the older hash table entries. By moving this to a separate function we capture these details and mention how it is different from a hugepage pte clear. This patch is a cleanup and only does code movement for clarity. There should not be any change in functionality. Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Acked-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Andrea Arcangeli <aarcange@redhat.com> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| * | | | mm/hugetlb: reduce arch dependent code about hugetlb_prefault_arch_hookZhang Zhen2015-06-2511-40/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Currently we have many duplicates in definitions of hugetlb_prefault_arch_hook. In all architectures this function is empty. Signed-off-by: Zhang Zhen <zhenzhang.zhang@huawei.com> Acked-by: David Rientjes <rientjes@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| * | | | powerpc/mm: tracking vDSO remapLaurent Dufour2015-06-252-1/+35
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Some processes (CRIU) are moving the vDSO area using the mremap system call. As a consequence the kernel reference to the vDSO base address is no more valid and the signal return frame built once the vDSO has been moved is not pointing to the new sigreturn address. This patch handles vDSO remapping and unmapping. Signed-off-by: Laurent Dufour <ldufour@linux.vnet.ibm.com> Reviewed-by: Ingo Molnar <mingo@kernel.org> Cc: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com> Cc: Hugh Dickins <hughd@google.com> Cc: Rik van Riel <riel@redhat.com> Cc: Mel Gorman <mgorman@suse.de> Cc: Pavel Emelyanov <xemul@parallels.com> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Michael Ellerman <mpe@ellerman.id.au> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| * | | | mm: new mm hook frameworkLaurent Dufour2015-06-2530-0/+450
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | CRIU is recreating the process memory layout by remapping the checkpointee memory area on top of the current process (criu). This includes remapping the vDSO to the place it has at checkpoint time. However some architectures like powerpc are keeping a reference to the vDSO base address to build the signal return stack frame by calling the vDSO sigreturn service. So once the vDSO has been moved, this reference is no more valid and the signal frame built later are not usable. This patch serie is introducing a new mm hook framework, and a new arch_remap hook which is called when mremap is done and the mm lock still hold. The next patch is adding the vDSO remap and unmap tracking to the powerpc architecture. This patch (of 3): This patch introduces a new set of header file to manage mm hooks: - per architecture empty header file (arch/x/include/asm/mm-arch-hooks.h) - a generic header (include/linux/mm-arch-hooks.h) The architecture which need to overwrite a hook as to redefine it in its header file, while architecture which doesn't need have nothing to do. The default hooks are defined in the generic header and are used in the case the architecture is not defining it. In a next step, mm hooks defined in include/asm-generic/mm_hooks.h should be moved here. Signed-off-by: Laurent Dufour <ldufour@linux.vnet.ibm.com> Suggested-by: Andrew Morton <akpm@linux-foundation.org> Cc: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com> Cc: Hugh Dickins <hughd@google.com> Cc: Rik van Riel <riel@redhat.com> Cc: Mel Gorman <mgorman@suse.de> Cc: Pavel Emelyanov <xemul@parallels.com> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Ingo Molnar <mingo@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| * | | | mm/hugetlb: reduce arch dependent code about huge_pmd_unshareZhang Zhen2015-06-2510-52/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Currently we have many duplicates in definitions of huge_pmd_unshare. In all architectures this function just returns 0 when CONFIG_ARCH_WANT_HUGE_PMD_SHARE is N. This patch puts the default implementation in mm/hugetlb.c and lets these architectures use the common code. Signed-off-by: Zhang Zhen <zhenzhang.zhang@huawei.com> Cc: Russell King <linux@arm.linux.org.uk> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Tony Luck <tony.luck@intel.com> Cc: James Hogan <james.hogan@imgtec.com> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Chris Metcalf <cmetcalf@ezchip.com> Cc: David Rientjes <rientjes@google.com> Cc: James Yang <James.Yang@freescale.com> Cc: Aneesh Kumar <aneesh.kumar@linux.vnet.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| * | | | xtensa: use for_each_sg()Akinobu Mita2015-06-251-7/+12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This replaces the plain loop over the sglist array with for_each_sg() macro which consists of sg_next() function calls. Since xtensa doesn't select ARCH_HAS_SG_CHAIN, it is not necessary to use for_each_sg() in order to loop over each sg element. But this can help find problems with drivers that do not properly initialize their sg tables when CONFIG_DEBUG_SG is enabled. Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com> Cc: Chris Zankel <chris@zankel.net> Cc: Max Filippov <jcmvbkbc@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| * | | | sparc: use for_each_sg()Akinobu Mita2015-06-251-3/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This replaces the plain loop over the sglist array with for_each_sg() macro which consists of sg_next() function calls. Since sparc does select ARCH_HAS_SG_CHAIN, it is necessary to use for_each_sg() in order to loop over each sg element. This also help find problems with drivers that do not properly initialize their sg tables when CONFIG_DEBUG_SG is enabled. Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com> Cc: "David S. Miller" <davem@davemloft.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| * | | | parisc: use for_each_sg()Akinobu Mita2015-06-251-11/+16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This replaces the plain loop over the sglist array with for_each_sg() macro which consists of sg_next() function calls. Since parisc doesn't select ARCH_HAS_SG_CHAIN, it is not necessary to use for_each_sg() in order to loop over each sg element. But this can help find problems with drivers that do not properly initialize their sg tables when CONFIG_DEBUG_SG is enabled. Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com> Cc: "James E.J. Bottomley" <jejb@parisc-linux.org> Cc: Helge Deller <deller@gmx.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| * | | | powerpc: use for_each_sg()Akinobu Mita2015-06-251-5/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This replaces the plain loop over the sglist array with for_each_sg() macro which consists of sg_next() function calls. Since powerpc does select ARCH_HAS_SG_CHAIN, it is necessary to use for_each_sg() in order to loop over each sg element. This also help find problems with drivers that do not properly initialize their sg tables when CONFIG_DEBUG_SG is enabled. Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Michael Ellerman <mpe@ellerman.id.au> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| * | | | metag: use for_each_sg()Akinobu Mita2015-06-251-5/+9
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This replaces the plain loop over the sglist array with for_each_sg() macro which consists of sg_next() function calls. Since metag doesn't select ARCH_HAS_SG_CHAIN, it is not necessary to use for_each_sg() in order to loop over each sg element. But this can help find problems with drivers that do not properly initialize their sg tables when CONFIG_DEBUG_SG is enabled. Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com> Cc: James Hogan <james.hogan@imgtec.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | | | Merge tag 'edac_for_4.2_2' of ↵Linus Torvalds2015-06-2513-36/+111
|\ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/bp/bp Pull EDAC updates from Borislav Petkov: - New APM X-Gene SoC EDAC driver (Loc Ho) - AMD error injection module improvements (Aravind Gopalakrishnan) - Altera Arria 10 support (Thor Thayer) - misc fixes and cleanups all over the place * tag 'edac_for_4.2_2' of git://git.kernel.org/pub/scm/linux/kernel/git/bp/bp: (28 commits) EDAC: Update Documentation/edac.txt EDAC: Fix typos in Documentation/edac.txt EDAC, mce_amd_inj: Set MISCV on injection EDAC, mce_amd_inj: Move bit preparations before the injection EDAC, mce_amd_inj: Cleanup and simplify README EDAC, altera: Do not allow suspend when EDAC is enabled EDAC, mce_amd_inj: Make inj_type static arm: socfpga: dts: Add Arria10 SDRAM EDAC DTS support EDAC, altera: Add Arria10 EDAC support EDAC, altera: Refactor for Altera CycloneV SoC EDAC, altera: Generalize driver to use DT Memory size EDAC, mce_amd_inj: Add README file EDAC, mce_amd_inj: Add individual permissions field to dfs_node EDAC, mce_amd_inj: Modify flags attribute to use string arguments EDAC, mce_amd_inj: Read out number of MCE banks from the hardware EDAC, mce_amd_inj: Use MCE_INJECT_GET macro for bank node too EDAC, xgene: Fix cpuid abuse EDAC, mpc85xx: Extend error address to 64 bit EDAC, mpc8xxx: Adapt for FSL SoC EDAC, edac_stub: Drop arch-specific include ...
| * | | | | arm: socfpga: dts: Add Arria10 SDRAM EDAC DTS supportThor Thayer2015-06-241-0/+11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add support for the Arria10 SDRAM EDAC. Update the bindings document for the new match string. Signed-off-by: Thor Thayer <tthayer@opensource.altera.com> Cc: Arnd Bergmann <arnd@arndb.de> Cc: devicetree@vger.kernel.org Cc: dinguyen@opensource.altera.com Cc: galak@codeaurora.org Cc: grant.likely@linaro.org Cc: ijc+devicetree@hellion.org.uk Cc: linux-arm-kernel@lists.infradead.org Cc: linux-edac <linux-edac@vger.kernel.org> Cc: m.chehab@samsung.com Cc: mark.rutland@arm.com Cc: pawel.moll@arm.com Cc: robh+dt@kernel.org Cc: tthayer.linux@gmail.com Link: http://lkml.kernel.org/r/1433428128-7292-5-git-send-email-tthayer@opensource.altera.com Signed-off-by: Borislav Petkov <bp@suse.de>
| * | | | | arm64: Add APM X-Gene SoC EDAC DTS entriesLoc Ho2015-05-291-0/+83
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add APM X-Gene SoC EDAC DTS entries. Signed-off-by: Loc Ho <lho@apm.com> Acked-by: Arnd Bergmann <arnd@arndb.de> Cc: devicetree@vger.kernel.org Cc: dougthompson@xmission.com Cc: ijc+devicetree@hellion.org.uk Cc: jcm@redhat.com Cc: linux-arm-kernel@lists.infradead.org Cc: linux-edac <linux-edac@vger.kernel.org> Cc: mark.rutland@arm.com Cc: mchehab@osg.samsung.com Cc: patches@apm.com Cc: robh+dt@kernel.org Link: http://lkml.kernel.org/r/1432337580-3750-6-git-send-email-lho@apm.com Signed-off-by: Borislav Petkov <bp@suse.de>
| * | | | | arm64: Enable EDAC on ARM64Loc Ho2015-05-291-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Select EDAC_SUPPORT for arm64. Signed-off-by: Loc Ho <lho@apm.com> Cc: devicetree@vger.kernel.org Cc: dougthompson@xmission.com Cc: ijc+devicetree@hellion.org.uk Cc: jcm@redhat.com Cc: linux-arm-kernel@lists.infradead.org Cc: linux-edac <linux-edac@vger.kernel.org> Cc: mark.rutland@arm.com Cc: mchehab@osg.samsung.com Cc: patches@apm.com Cc: robh+dt@kernel.org Link: http://lkml.kernel.org/r/1432337580-3750-2-git-send-email-lho@apm.com Signed-off-by: Borislav Petkov <bp@suse.de>
| * | | | | EDAC: Cleanup atomic_scrub messBorislav Petkov2015-05-2810-36/+16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | So first of all, this atomic_scrub() function's naming is bad. It looks like an atomic_t helper. Change it to edac_atomic_scrub(). The bigger problem is that this function is arch-specific and every new arch which doesn't necessarily need that functionality still needs to define it, otherwise EDAC doesn't compile. So instead of doing that and including arch-specific headers, have each arch define an EDAC_ATOMIC_SCRUB symbol which can be used in edac_mc.c for ifdeffery. Much cleaner. And we already are doing this with another symbol - EDAC_SUPPORT. This is also much cleaner than having CONFIG_EDAC enumerate all the arches which need/have EDAC support and drivers. This way I can kill the useless edac.h header in tile too. Acked-by: Ralf Baechle <ralf@linux-mips.org> Acked-by: Michael Ellerman <mpe@ellerman.id.au> Acked-by: Chris Metcalf <cmetcalf@ezchip.com> Acked-by: Ingo Molnar <mingo@kernel.org> Acked-by: Russell King <rmk+kernel@arm.linux.org.uk> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Doug Thompson <dougthompson@xmission.com> Cc: linux-arm-kernel@lists.infradead.org Cc: linux-edac@vger.kernel.org Cc: linux-kernel@vger.kernel.org Cc: linux-mips@linux-mips.org Cc: linuxppc-dev@lists.ozlabs.org Cc: "Maciej W. Rozycki" <macro@codesourcery.com> Cc: Markos Chandras <markos.chandras@imgtec.com> Cc: Mauro Carvalho Chehab <mchehab@osg.samsung.com> Cc: Paul Mackerras <paulus@samba.org> Cc: "Steven J. Hill" <Steven.Hill@imgtec.com> Cc: x86@kernel.org Signed-off-by: Borislav Petkov <bp@suse.de>
* | | | | | Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-nextLinus Torvalds2015-06-254-28/+248
|\ \ \ \ \ \ | |_|/ / / / |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull networking updates from David Miller: 1) Add TX fast path in mac80211, from Johannes Berg. 2) Add TSO/GRO support to ibmveth, from Thomas Falcon 3) Move away from cached routes in ipv6, just like ipv4, from Martin KaFai Lau. 4) Lots of new rhashtable tests, from Thomas Graf. 5) Run ingress qdisc lockless, from Alexei Starovoitov. 6) Allow servers to fetch TCP packet headers for SYN packets of new connections, for fingerprinting. From Eric Dumazet. 7) Add mode parameter to pktgen, for testing receive. From Alexei Starovoitov. 8) Cache access optimizations via simplifications of build_skb(), from Alexander Duyck. 9) Move page frag allocator under mm/, also from Alexander. 10) Add xmit_more support to hv_netvsc, from KY Srinivasan. 11) Add a counter guard in case we try to perform endless reclassify loops in the packet scheduler. 12) Extern flow dissector to be programmable and use it in new "Flower" classifier. From Jiri Pirko. 13) AF_PACKET fanout rollover fixes, performance improvements, and new statistics. From Willem de Bruijn. 14) Add netdev driver for GENEVE tunnels, from John W Linville. 15) Add ingress netfilter hooks and filtering, from Pablo Neira Ayuso. 16) Fix handling of epoll edge triggers in TCP, from Eric Dumazet. 17) Add an ECN retry fallback for the initial TCP handshake, from Daniel Borkmann. 18) Add tail call support to BPF, from Alexei Starovoitov. 19) Add several pktgen helper scripts, from Jesper Dangaard Brouer. 20) Add zerocopy support to AF_UNIX, from Hannes Frederic Sowa. 21) Favor even port numbers for allocation to connect() requests, and odd port numbers for bind(0), in an effort to help avoid ip_local_port_range exhaustion. From Eric Dumazet. 22) Add Cavium ThunderX driver, from Sunil Goutham. 23) Allow bpf programs to access skb_iif and dev->ifindex SKB metadata, from Alexei Starovoitov. 24) Add support for T6 chips in cxgb4vf driver, from Hariprasad Shenai. 25) Double TCP Small Queues default to 256K to accomodate situations like the XEN driver and wireless aggregation. From Wei Liu. 26) Add more entropy inputs to flow dissector, from Tom Herbert. 27) Add CDG congestion control algorithm to TCP, from Kenneth Klette Jonassen. 28) Convert ipset over to RCU locking, from Jozsef Kadlecsik. 29) Track and act upon link status of ipv4 route nexthops, from Andy Gospodarek. * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (1670 commits) bridge: vlan: flush the dynamically learned entries on port vlan delete bridge: multicast: add a comment to br_port_state_selection about blocking state net: inet_diag: export IPV6_V6ONLY sockopt stmmac: troubleshoot unexpected bits in des0 & des1 net: ipv4 sysctl option to ignore routes when nexthop link is down net: track link-status of ipv4 nexthops net: switchdev: ignore unsupported bridge flags net: Cavium: Fix MAC address setting in shutdown state drivers: net: xgene: fix for ACPI support without ACPI ip: report the original address of ICMP messages net/mlx5e: Prefetch skb data on RX net/mlx5e: Pop cq outside mlx5e_get_cqe net/mlx5e: Remove mlx5e_cq.sqrq back-pointer net/mlx5e: Remove extra spaces net/mlx5e: Avoid TX CQE generation if more xmit packets expected net/mlx5e: Avoid redundant dev_kfree_skb() upon NOP completion net/mlx5e: Remove re-assignment of wq type in mlx5e_enable_rq() net/mlx5e: Use skb_shinfo(skb)->gso_segs rather than counting them net/mlx5e: Static mapping of netdev priv resources to/from netdev TX queues net/mlx4_en: Use HW counters for rx/tx bytes/packets in PF device ...