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	ACPI: update debug parameter documentation	2008-11-07 21:45:29 -05:00
aoe	aoe: user can ask driver to forget previously detected devices	2008-02-08 09:22:31 -08:00
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	Blackfin arch: Add document about bfin-gpio	2009-01-07 23:14:38 +08:00
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	Typo: fro -> from	2007-07-19 10:04:47 -07:00
cpu-freq	[ACPI/CPUFREQ] Introduce bios_limit per cpu cpufreq sysfs interface	2009-11-24 13:33:34 -05:00
cpuidle	cpuidle: Add Documentation	2008-02-14 00:16:13 -05:00
cris	fix random typos	2008-10-16 11:21:30 -07:00
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	Documentation: Remove last references to BitKeeper.	2008-04-21 22:19:05 +00:00
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	move frv docs one level up	2008-02-03 15:54:28 +02:00
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	documentation: convert the Documentation directory to UTF-8	2007-05-09 08:58:19 +02:00
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	HOWTO: update misspelling and word incorrected	2007-12-17 10:33:19 -08:00
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	[SCSI] 53c7xx: fix removal fallout	2008-01-11 18:22:30 -06:00
make	Documentation/make/headers_install.txt	2007-10-17 08:43:05 -07:00
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	The namespaces compatibility list doc	2007-11-29 09:24:53 -08:00
netlabel	Fix occurrences of "the the "	2007-05-09 08:57:56 +02:00
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	generic, x86: add tests for prctl PR_GET_TSC and PR_SET_TSC	2008-04-19 19:19:55 +02:00
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	sh: Kill off remaining CONFIG_SH_KGDB bits.	2008-12-22 18:44:05 +09:00
sound	Merge branch 'topic/hda' into for-linus	2009-12-09 18:16:11 +01:00
sparc	sparc: Remove Documentation/sparc/sbus_drivers.txt	2008-08-29 02:15:25 -07:00
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	remove mention of CONFIG_KMOD from documentation	2008-07-22 19:24:29 +10:00
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	i2400m: documentation and instructions for usage	2009-01-07 10:00:18 -08:00
x86	USB: ehci-dbgp,documentation: Documentation updates for ehci-dbgp	2009-09-23 06:46:39 -07:00
zh_CN	Chinese: add translation of Codingstyle	2008-01-24 20:40:04 -08:00
00-INDEX	Bluetooth: Add documentation for Marvell Bluetooth driver	2009-08-22 14:25:32 -07:00
BUG-HUNTING	Documentation: add hint about call traces & module symbols to BUG-HUNTING	2008-02-06 10:41:09 -08:00
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	powerpc/cell: Add DMA_ATTR_WEAK_ORDERING dma attribute and use in Cell IOMMU code	2008-07-22 10:39:36 +10:00
DMA-mapping.txt	use DMA_BIT_MASK instead of inline constant	2009-12-09 18:59:52 -08:00
HOWTO	Remove Andrew Morton's http://www.zip.com.au/~akpm/	2008-10-16 11:21:32 -07:00
IO-mapping.txt	Documentation: move DMA-mapping.txt to Doc/PCI/	2009-01-29 18:19:29 -08:00
IPMI.txt	IPMI: new NMI handling	2007-10-18 14:37:32 -07:00
IRQ-affinity.txt	genirq: Expose default irq affinity mask (take 3)	2008-06-05 15:18:30 +02:00
IRQ.txt	…
Intel-IOMMU.txt	intel-iommu: Kill DMAR_BROKEN_GFX_WA option.	2009-09-19 09:37:23 -07:00
Makefile	docsrc: build Documentation/ sources	2008-08-12 16:07:30 -07:00
ManagementStyle	docs: fix ManagementStyle book name	2008-10-30 11:38:46 -07:00
SAK.txt	Remove Andrew Morton's old email accounts	2008-10-16 11:21:32 -07:00
SELinux.txt	selinux: add support for installing a dummy policy (v2)	2008-08-27 08:54:08 +10:00
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	Remove Andrew Morton's old email accounts	2008-10-16 11:21:32 -07:00
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	Document handling of bad memory	2008-12-03 16:09:53 -07:00
basic_profiling.txt	…
binfmt_misc.txt	documentation: convert the Documentation directory to UTF-8	2007-05-09 08:58:19 +02:00
braille-console.txt	trivial: Miscellaneous documentation typo fixes	2009-06-12 18:01:47 +02:00
bt8xxgpio.txt	gpio: add bt8xxgpio driver	2008-07-25 10:53:30 -07:00
btmrvl.txt	Bluetooth: Add documentation for Marvell Bluetooth driver	2009-08-22 14:25:32 -07:00
cachetlb.txt	remove unused flush_tlb_pgtables	2007-10-19 11:53:34 -07:00
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	[PATCH] Documentation: CPU load calculation description	2007-03-01 14:53:39 -08:00
cputopology.txt	Documentation: ABI: /sys/devices/system/cpu/cpu#/ topology files	2009-10-30 14:59:52 -07:00
credentials.txt	CRED: Documentation	2008-11-14 10:39:26 +11:00
dcdbas.txt	…
debugging-modules.txt	Documentation: Clarify when module debugging actually works.	2008-02-03 15:27:38 +02:00
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	async_tx, dmaengine: document channel allocation and api rework	2009-01-05 18:10:19 -07:00
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	Documentation/email-clients.txt: add some info about gmail	2008-11-06 15:41:19 -08:00
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	[SPARC]: Remove SunOS and Solaris binary support.	2008-04-21 15:10:15 -07:00
hw_random.txt	hw_random doc updates	2008-03-24 19:22:19 -07:00
initrd.txt	use the newc archive format as requested by initramfs	2008-02-03 14:54:41 +02:00
intel_txt.txt	x86, intel_txt: Intel TXT boot support	2009-07-21 11:49:06 -07:00
io-mapping.txt	io mapping: improve documentation	2008-11-03 18:21:44 +01:00
io_ordering.txt	…
iostats.txt	Documentation cleanup: trivial misspelling, punctuation, and grammar corrections.	2008-07-26 12:00:06 -07:00
irqflags-tracing.txt	…
isapnp.txt	…
java.txt	Documentation/java.txt: typo and grammar fixes	2007-10-20 02:37:21 +02:00
kernel-doc-nano-HOWTO.txt	kernel-doc: allow multi-line declaration purpose descriptions	2009-09-18 09:48:52 -07:00
kernel-docs.txt	doc: update to URL and status of kernel-docs.txt entry	2008-06-06 11:29:10 -07:00
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: allow the callout data to be passed as a blob rather than a string	2008-04-29 08:06:16 -07:00
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	LDM: Fix for Windows Vista dynamic disks	2007-05-21 09:58:40 -07:00
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	documentation: update header file paths	2009-01-06 15:59:28 -08:00
mca.txt	The ps2esdi driver was marked as BROKEN more than two years ago due to being	2008-03-17 09:03:05 +01:00
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	Documentation: Add nested versions of mutex locks to docs	2007-10-20 00:15:26 +02:00
nmi_watchdog.txt	x86, nmi-watchdog: update procfs nmi_watchdog file documentation v2	2008-10-30 19:07:04 +01:00
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	plip: fix parport_register_device name parameter	2007-11-26 19:39:01 -08:00
parport.txt	…
pi-futex.txt	…
pnp.txt	Documentation: Replace obsolete "driverfs" with "sysfs".	2008-01-24 20:40:04 -08:00
preempt-locking.txt	…
printk-formats.txt	DOC: add printk-formats.txt	2008-11-12 17:17:17 -08:00
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_api_nonsense.txt: Disambiguate the use of "this" by using "that" to refer to the syscall interface	2007-07-30 14:25:12 -07:00
stable_kernel_rules.txt	Update stable tree documentation	2008-10-29 15:03:49 -07:00
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	introduce HAVE_EFFICIENT_UNALIGNED_ACCESS Kconfig symbol	2008-07-25 10:53:27 -07:00
unicode.txt	…
unshare.txt	…
vgaarbiter.txt	PCI/VGA: add VGA arbitration documentation	2009-09-09 13:29:42 -07:00
video-output.txt	output: Add output class document	2006-12-20 01:46:58 -05:00
volatile-considered-harmful.txt	Documentation cleanup: trivial misspelling, punctuation, and grammar corrections.	2008-07-26 12:00:06 -07:00
voyager.txt	…
zorro.txt	…