Andi Kleen 4fd466eb46 HWPOISON: add memory cgroup filter ... The hwpoison test suite need to inject hwpoison to a collection of selected task pages, and must not touch pages not owned by them and thus kill important system processes such as init. (But it's OK to mis-hwpoison free/unowned pages as well as shared clean pages. Mis-hwpoison of shared dirty pages will kill all tasks, so the test suite will target all or non of such tasks in the first place.) The memory cgroup serves this purpose well. We can put the target processes under the control of a memory cgroup, and tell the hwpoison injection code to only kill pages associated with some active memory cgroup. The prerequisite for doing hwpoison stress tests with mem_cgroup is, the mem_cgroup code tracks task pages _accurately_ (unless page is locked). Which we believe is/should be true. The benefits are simplification of hwpoison injector code. Also the mem_cgroup code will automatically be tested by hwpoison test cases. The alternative interfaces pin-pfn/unpin-pfn can also delegate the (process and page flags) filtering functions reliably to user space. However prototype implementation shows that this scheme adds more complexity than we wanted. Example test case: mkdir /cgroup/hwpoison usemem -m 100 -s 1000 & echo `jobs -p` > /cgroup/hwpoison/tasks memcg_ino=$(ls -id /cgroup/hwpoison | cut -f1 -d' ') echo $memcg_ino > /debug/hwpoison/corrupt-filter-memcg page-types -p `pidof init` --hwpoison # shall do nothing page-types -p `pidof usemem` --hwpoison # poison its pages [AK: Fix documentation] [Add fix for problem noticed by Li Zefan <lizf@cn.fujitsu.com>; dentry in the css could be NULL] CC: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> CC: Hugh Dickins <hugh.dickins@tiscali.co.uk> CC: Daisuke Nishimura <nishimura@mxp.nes.nec.co.jp> CC: Balbir Singh <balbir@linux.vnet.ibm.com> CC: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> CC: Li Zefan <lizf@cn.fujitsu.com> CC: Paul Menage <menage@google.com> CC: Nick Piggin <npiggin@suse.de> CC: Andi Kleen <andi@firstfloor.org> Signed-off-by: Wu Fengguang <fengguang.wu@intel.com> Signed-off-by: Andi Kleen <ak@linux.intel.com>		2009-12-16 12:19:59 +01:00
..
ABI	Documentation: ABI: /sys/devices/system/cpu/cpu#/node	2009-12-15 08:53:18 -08:00
DocBook	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input	2009-12-09 19:52:01 -08:00
PCI	PCI: document PCIe fundamental reset interfaces	2009-09-09 13:29:38 -07:00
RCU	rcu: Add synchronize_srcu_expedited() to the documentation	2009-10-26 09:40:31 +01:00
accounting	Documentation/: fix warnings from -Wmissing-prototypes in HOSTCFLAGS	2009-09-23 07:39:28 -07:00
acpi	…
aoe	…
arm	OMAP: DSS2: Documentation for DSS2	2009-12-09 12:04:34 +02:00
auxdisplay	includecheck fix: Documentation, cfag12864b-example.c	2009-09-24 07:20:57 -07:00
blackfin	…
block	Trivial typo fixes in Documentation/block/data-integrity.txt.	2009-07-01 10:56:25 +02:00
blockdev	The DRBD driver	2009-10-01 21:17:49 +02:00
cdrom	debugfs: Fix terminology inconsistency of dir name to mount debugfs filesystem.	2009-06-15 21:30:28 -07:00
cgroups	blkio: Documentation	2009-12-03 19:28:53 +01:00
connector	connector: Provide the sender's credentials to the callback	2009-10-02 10:54:01 -07:00
console	…
cpu-freq	[ACPI/CPUFREQ] Introduce bios_limit per cpu cpufreq sysfs interface	2009-11-24 13:33:34 -05:00
cpuidle	…
cris	…
crypto	async_tx: add support for asynchronous RAID6 recovery operations	2009-08-29 19:09:27 -07:00
development-process	docs: Encourage better changelogs in the development process document	2009-06-04 10:32:49 -06:00
device-mapper	dm snapshot: add merge target	2009-12-10 23:52:30 +00:00
driver-model	driver model: fix show/store prototypes in doc.	2009-07-12 13:02:10 -07:00
dvb	tree-wide: fix assorted typos all over the place	2009-12-04 15:39:55 +01:00
early-userspace	…
fault-injection	debugfs: Fix terminology inconsistency of dir name to mount debugfs filesystem.	2009-06-15 21:30:28 -07:00
fb	fbdev: Migrate mailing lists to vger	2009-11-30 13:46:04 -08:00
filesystems	procfs: allow threads to rename siblings via /proc/pid/tasks/tid/comm	2009-12-15 08:53:24 -08:00
firmware_class	driver core: fix documentation of request_firmware_nowait	2009-06-15 21:30:24 -07:00
frv	…
hwmon	lis3: update documentation to match latest changes	2009-12-15 08:53:36 -08:00
i2c	i2c: Get rid of struct i2c_client_address_data	2009-12-14 21:17:25 +01:00
i2o	…
ia64	Documentation/: fix warnings from -Wmissing-prototypes in HOSTCFLAGS	2009-09-23 07:39:28 -07:00
ide	ide: preserve Host Protected Area by default (v2)	2009-06-07 13:52:52 +02:00
infiniband	IB: Fix typo in udev rule documentation	2009-10-07 15:35:55 -07:00
input	Input: add new driver for Sentelic Finger Sensing Pad	2009-08-19 21:46:09 -07:00
ioctl	drivers/char/uv_mmtimer.c: add memory mapped RTC driver for UV	2009-09-24 07:21:03 -07:00
isdn	gigaset: documentation amendments	2009-12-08 20:30:41 -08:00
ja_JP	block: rename CONFIG_LBD to CONFIG_LBDAF	2009-06-19 08:08:50 +02:00
kbuild	kbuild: introduce ld-option	2009-09-20 12:27:42 +02:00
kdump	trivial: Miscellaneous documentation typo fixes	2009-06-12 18:01:47 +02:00
ko_KR	…
kvm	KVM: x86: Add KVM_GET/SET_VCPU_EVENTS	2009-12-03 09:32:25 +02:00
laptops	Merge branch 'thinkpad-2.6.32-part2' into release	2009-09-26 01:08:55 -04:00
lguest	tree-wide: fix assorted typos all over the place	2009-12-04 15:39:55 +01:00
m68k	…
make	…
mips	ide: remove unused CONFIG_BLK_DEV_IDE_AU1XXX_SEQTS_PER_RQ	2009-01-14 19:19:03 +01:00
misc-devices	ad525x_dpot: new driver for AD525x digital potentiometers	2009-12-15 08:53:25 -08:00
mn10300	trivial: Miscellaneous documentation typo fixes	2009-06-12 18:01:47 +02:00
mtd	trivial: Miscellaneous documentation typo fixes	2009-06-12 18:01:47 +02:00
namespaces	…
netlabel	…
networking	ipv4 05/05: add sysctl to accept packets with local source addresses	2009-12-03 12:14:38 -08:00
parisc	…
pcmcia	pcmcia: remove now-defunct cs_error, pcmcia_error_{func,ret}	2009-11-09 08:30:06 +01:00
power	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial	2009-12-09 19:43:33 -08:00
powerpc	Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc	2009-12-12 14:27:24 -08:00
pps	LinuxPPS: core support	2009-06-18 13:04:04 -07:00
prctl	…
s390	[S390] s390dbf: Add description for usage of "%s" in sprintf events	2009-09-11 10:29:53 +02:00
scheduler	sched: Documentation/sched-rt-group: Fix style issues & bump version	2009-06-21 13:12:46 +02:00
scsi	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial	2009-12-09 19:43:33 -08:00
serial	tty: docs: serial/tty, add to ldisc methods	2009-12-11 15:18:05 -08:00
sh	…
sound	Merge branch 'topic/hda' into for-linus	2009-12-09 18:16:11 +01:00
sparc	…
spi	tree-wide: fix assorted typos all over the place	2009-12-04 15:39:55 +01:00
sysctl	doc: Add documentation for bootloader_{type,version}	2009-12-11 14:28:56 -08:00
telephony	…
thermal	thermal: sysfs-api.txt - document passive attribute for thermal zones	2009-11-05 18:11:18 -05:00
timers	fix URL in hpet.txt	2009-11-09 09:40:54 +01:00
trace	Merge branch 'perf/core' into perf/probes	2009-11-17 10:17:47 +01:00
uml	…
usb	USB: prepare for changover to Runtime PM framework	2009-12-11 11:55:25 -08:00
video4linux	Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-2.6	2009-12-09 19:50:49 -08:00
vm	HWPOISON: add memory cgroup filter	2009-12-16 12:19:59 +01:00
w1	ds2482: Discard obsolete detect method	2009-10-04 22:53:41 +02:00
watchdog	Documentation/: fix warnings from -Wmissing-prototypes in HOSTCFLAGS	2009-09-23 07:39:28 -07:00
wimax	…
x86	USB: ehci-dbgp,documentation: Documentation updates for ehci-dbgp	2009-09-23 06:46:39 -07:00
zh_CN	…
00-INDEX	Bluetooth: Add documentation for Marvell Bluetooth driver	2009-08-22 14:25:32 -07:00
BUG-HUNTING	…
Changes	Documentation/Changes: perl is needed to build the kernel	2009-06-18 13:03:46 -07:00
CodingStyle	trivial: fix typo milisecond/millisecond for documentation and source comments.	2009-06-12 18:01:46 +02:00
DMA-API.txt	trivial: Miscellaneous documentation typo fixes	2009-06-12 18:01:47 +02:00
DMA-ISA-LPC.txt	…
DMA-attributes.txt	…
DMA-mapping.txt	use DMA_BIT_MASK instead of inline constant	2009-12-09 18:59:52 -08:00
HOWTO	…
IO-mapping.txt	Documentation: move DMA-mapping.txt to Doc/PCI/	2009-01-29 18:19:29 -08:00
IPMI.txt	…
IRQ-affinity.txt	…
IRQ.txt	…
Intel-IOMMU.txt	intel-iommu: Kill DMAR_BROKEN_GFX_WA option.	2009-09-19 09:37:23 -07:00
Makefile	…
ManagementStyle	…
SAK.txt	…
SELinux.txt	…
SM501.txt	trivial: Miscellaneous documentation typo fixes	2009-06-12 18:01:47 +02:00
SecurityBugs	…
Smack.txt	smack: implement logging V3	2009-04-14 09:00:23 +10:00
SubmitChecklist	block: rename CONFIG_LBD to CONFIG_LBDAF	2009-06-19 08:08:50 +02:00
SubmittingDrivers	…
SubmittingPatches	docs: update patch size in SubmittingPatches	2009-10-01 16:11:12 -07:00
VGA-softcursor.txt	…
applying-patches.txt	…
atomic_ops.txt	Documentation/atomic_ops.txt: fix sample code	2009-06-16 19:47:52 -07:00
bad_memory.txt	…
basic_profiling.txt	…
binfmt_misc.txt	…
braille-console.txt	trivial: Miscellaneous documentation typo fixes	2009-06-12 18:01:47 +02:00
bt8xxgpio.txt	…
btmrvl.txt	Bluetooth: Add documentation for Marvell Bluetooth driver	2009-08-22 14:25:32 -07:00
cachetlb.txt	…
cpu-hotplug.txt	powerpc/pseries: Add hooks to put the CPU into an appropriate offline state	2009-11-24 14:33:04 +11:00
cpu-load.txt	…
cputopology.txt	Documentation: ABI: /sys/devices/system/cpu/cpu#/ topology files	2009-10-30 14:59:52 -07:00
credentials.txt	…
dcdbas.txt	…
debugging-modules.txt	…
debugging-via-ohci1394.txt	ieee1394: update URLs in debugging-via-ohci1394.txt	2009-10-03 09:28:11 +02:00
dell_rbu.txt	trivial: Documentation/dell_rbu.txt: fix typos	2009-06-12 18:01:50 +02:00
devices.txt	lanana: assign a device name and numbering for MAX3100	2009-04-07 08:44:05 -07:00
dmaengine.txt	…
dontdiff	SELinux: add .gitignore files for dynamic classes	2009-10-24 09:42:27 +08:00
dynamic-debug-howto.txt	Dynamic debug: allow simple quoting of words	2009-03-24 16:38:27 -07:00
edac.txt	fix typos/grammos in Documentation/edac.txt	2009-12-04 15:39:53 +01:00
eisa.txt	…
email-clients.txt	…
feature-removal-schedule.txt	kallsyms: remove deprecated print_fn_descriptor_symbol()	2009-12-15 08:53:26 -08:00
flexible-arrays.txt	Update flex_arrays.txt	2009-10-15 07:25:20 -06:00
futex-requeue-pi.txt	futex: add requeue-pi documentation	2009-05-09 07:12:50 +02:00
gcov.txt	trivial: fix typo in CONFIG_DEBUG_FS in gcov doc	2009-09-21 15:14:56 +02:00
gpio.txt	correct gpio.txt typos	2009-12-09 18:59:52 -08:00
highuid.txt	…
hw_random.txt	…
initrd.txt	…
intel_txt.txt	x86, intel_txt: Intel TXT boot support	2009-07-21 11:49:06 -07:00
io-mapping.txt	…
io_ordering.txt	…
iostats.txt	…
irqflags-tracing.txt	…
isapnp.txt	…
java.txt	…
kernel-doc-nano-HOWTO.txt	kernel-doc: allow multi-line declaration purpose descriptions	2009-09-18 09:48:52 -07:00
kernel-docs.txt	…
kernel-parameters.txt	Merge branch 'omap-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap-2.6	2009-12-12 11:40:13 -08:00
keys-request-key.txt	…
keys.txt	KEYS: Add a keyctl to install a process's session keyring on its parent [try #6]	2009-09-02 21:29:22 +10:00
kmemcheck.txt	kmemcheck: update documentation	2009-07-01 22:36:22 +02:00
kmemleak.txt	kmemleak: add clear command support	2009-09-08 16:36:08 +01:00
kobject.txt	trivial: Miscellaneous documentation typo fixes	2009-06-12 18:01:47 +02:00
kprobes.txt	debugfs: Fix terminology inconsistency of dir name to mount debugfs filesystem.	2009-06-15 21:30:28 -07:00
kref.txt	kref: double kref_put() in my_data_handler()	2009-09-18 09:48:52 -07:00
ldm.txt	…
leds-class.txt	led: document sysfs interface	2009-08-28 15:21:12 -04:00
leds-lp3944.txt	leds: LED driver for National Semiconductor LP3944 Funlight Chip	2009-06-23 20:21:38 +01:00
local_ops.txt	trivial: Miscellaneous documentation typo fixes	2009-06-12 18:01:47 +02:00
lockdep-design.txt	lockdep: Fix typos in documentation	2009-08-07 12:03:46 +02:00
lockstat.txt	lockstat: Add usage info to Documentation/lockstat.txt	2009-12-06 13:20:02 +01:00
logo.gif	Revert "linux.conf.au 2009: Tuz"	2009-04-27 12:00:27 -07:00
logo.txt	Revert "linux.conf.au 2009: Tuz"	2009-04-27 12:00:27 -07:00
magic-number.txt	…
mca.txt	…
md.txt	md: add 'recovery_start' per-device sysfs attribute	2009-12-14 12:58:57 +11:00
memory-barriers.txt	sched: Document memory barriers implied by sleep/wake-up primitives	2009-04-29 14:15:55 +02:00
memory-hotplug.txt	mm: add numa node symlink for memory section in sysfs	2009-12-15 08:53:17 -08:00
memory.txt	Documentation/memory.txt: remove some very outdated recommendations	2009-09-22 07:17:26 -07:00
mono.txt	…
mutex-design.txt	…
nmi_watchdog.txt	…
nommu-mmap.txt	nommu: fix malloc performance by adding uninitialized flag	2009-12-15 08:53:24 -08:00
numastat.txt	mm: fix NUMA accounting in numastat.txt	2009-09-22 07:17:39 -07:00
oops-tracing.txt	docs: Describe the 'C' taint flag in oops-tracing.txt	2009-11-09 09:40:56 +01:00
parport-lowlevel.txt	…
parport.txt	…
pi-futex.txt	…
pnp.txt	…
preempt-locking.txt	…
printk-formats.txt	…
prio_tree.txt	…
rbtree.txt	trivial: rbtree.txt: fix rb_entry() parameters in sample code	2009-06-12 18:01:47 +02:00
rfkill.txt	rfkill: export persistent attribute in sysfs	2009-06-19 11:50:18 -04:00
robust-futex-ABI.txt	futex: documentation: fix inconsistent description of futex list_op_pending	2009-06-18 13:03:56 -07:00
robust-futexes.txt	…
rt-mutex-design.txt	…
rt-mutex.txt	…
rtc.txt	rtc: add boot_timesource sysfs attribute	2009-09-23 07:39:46 -07:00
serial-console.txt	…
sgi-ioc4.txt	…
sgi-visws.txt	…
slow-work.txt	SLOW_WORK: Move slow_work's proc file to debugfs	2009-12-01 08:20:31 -08:00
sparse.txt	Documentation: explain the difference between __bitwise and __bitwise__	2009-04-11 08:18:11 +02:00
spinlocks.txt	Documentation: rw_lock lessons learned	2009-12-14 09:46:56 -08:00
stable_api_nonsense.txt	…
stable_kernel_rules.txt	…
svga.txt	…
sysfs-rules.txt	Doc/sysfs-rules: Swap the order of the words so the sentence makes more sense	2009-05-08 19:22:20 -07:00
sysrq.txt	sysrq, kdump: make sysrq-c consistent	2009-07-29 19:10:36 -07:00
tomoyo.txt	tomoyo: add Documentation/tomoyo.txt	2009-04-14 09:14:58 +10:00
unaligned-memory-access.txt	…
unicode.txt	…
unshare.txt	…
vgaarbiter.txt	PCI/VGA: add VGA arbitration documentation	2009-09-09 13:29:42 -07:00
video-output.txt	…
volatile-considered-harmful.txt	…
voyager.txt	…
zorro.txt	…