Mandeep Singh Baines dabb16f639 oom: allow a non-CAP_SYS_RESOURCE proces to oom_score_adj down ... We'd like to be able to oom_score_adj a process up/down as it enters/leaves the foreground. Currently, it is not possible to oom_adj down without CAP_SYS_RESOURCE. This patch allows a task to decrease its oom_score_adj back to the value that a CAP_SYS_RESOURCE thread set it to or its inherited value at fork. Assuming the thread that has forked it has oom_score_adj of 0, each process could decrease it back from 0 upon activation unless a CAP_SYS_RESOURCE thread elevated it to something higher. Alternative considered: * a setuid binary * a daemon with CAP_SYS_RESOURCE Since you don't wan't all processes to be able to reduce their oom_adj, a setuid or daemon implementation would be complex. The alternatives also have much higher overhead. This patch updated from original patch based on feedback from David Rientjes. Signed-off-by: Mandeep Singh Baines <msb@chromium.org> Acked-by: David Rientjes <rientjes@google.com> Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Cc: Rik van Riel <riel@redhat.com> Cc: Ying Han <yinghan@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>		2011-01-13 17:32:35 -08:00
..
ABI	leds: add output inversion option to backlight trigger	2011-01-13 08:03:06 -08:00
accounting	taskstats: pad taskstats netlink response for aligment issues on ia64	2010-12-22 19:43:34 -08:00
acpi	ACPI: introduce module parameter acpi.aml_debug_output	2010-08-14 23:02:14 -04:00
aoe	Documentation: update broken web addresses.	2010-08-04 15:21:40 +02:00
arm	Merge branch 'omap-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap-2.6	2011-01-06 19:13:58 -08:00
auxdisplay
blackfin	Blackfin: document SPI CS limitations with CPHA=0	2010-08-06 12:55:52 -04:00
block	Documentation: remove anticipatory scheduler info	2010-11-11 12:09:59 +01:00
blockdev	Documentation: update broken web addresses.	2010-08-04 15:21:40 +02:00
cdrom	Documentation: update broken web addresses.	2010-08-04 15:21:40 +02:00
cgroups	Merge branch 'for-2.6.38/core' of git://git.kernel.dk/linux-2.6-block	2011-01-13 10:45:01 -08:00
connector
console
cpu-freq
cpuidle
cris
crypto
development-process	Documentation/development-process: more staging info	2010-11-18 15:00:47 -08:00
device-mapper	dm: raid456 basic support	2011-01-13 20:00:02 +00:00
DocBook	Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial	2011-01-13 10:05:56 -08:00
driver-model	driver core: prune docs about device_interface	2010-11-10 16:57:11 -08:00
dvb	[media] Documentation/lmedm04: Fix firmware extract information	2010-12-29 08:16:30 -02:00
early-userspace
fault-injection
fb	Merge branch 'fbdev/udlfb'	2011-01-06 18:10:09 +09:00
filesystems	oom: allow a non-CAP_SYS_RESOURCE proces to oom_score_adj down	2011-01-13 17:32:35 -08:00
firmware_class	firmware: Update hotplug script	2010-08-05 13:53:34 -07:00
frv
hwmon	hwmon: (dme1737) Add support for in7 for SCH5127	2011-01-12 21:55:13 +01:00
i2c	i2c: Add generic I2C multiplexer using GPIO API	2011-01-10 22:11:23 +01:00
i2o
ia64	Documentation: update broken web addresses.	2010-08-04 15:21:40 +02:00
ide
infiniband	Documentation: update broken web addresses.	2010-08-04 15:21:40 +02:00
input	Input: fix force feedback capability query example	2011-01-11 01:07:55 -08:00
ioctl	pps: add kernel consumer support	2011-01-13 08:03:21 -08:00
isdn	Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial	2010-08-04 15:31:02 -07:00
ja_JP	Documentation: update broken web addresses.	2010-08-04 15:21:40 +02:00
kbuild	Merge branch 'next-devicetree' of git://git.secretlab.ca/git/linux-2.6	2011-01-10 08:57:03 -08:00
kdump	kdump: update kexec-tools URL and Vivek's email	2010-11-25 14:36:38 +01:00
ko_KR	Docs/Kconfig: Update: osdl.org -> linuxfoundation.org	2010-11-15 23:50:13 +01:00
kvm	Merge branch 'kvm-updates/2.6.38' of git://git.kernel.org/pub/scm/virt/kvm/kvm	2011-01-13 10:14:24 -08:00
laptops	thinkpad-acpi: untangle ACPI/vendor backlight selection	2010-08-16 11:54:50 -04:00
leds	Documentation: led drivers lp5521 and lp5523	2010-11-12 07:55:32 -08:00
lguest	Docs/Kconfig: Update: osdl.org -> linuxfoundation.org	2010-11-15 23:50:13 +01:00
m68k
make	kbuild: introduce HDR_ARCH_LIST for headers_install_all	2010-12-14 22:16:19 +01:00
mips
misc-devices	Documentation: short descriptions for bh1770glc and apds990x drivers	2010-10-26 16:52:14 -07:00
mmc	mmc: add erase, secure erase, trim and secure trim operations	2010-08-12 08:43:30 -07:00
mn10300
mtd	Documentation: update broken web addresses.	2010-08-04 15:21:40 +02:00
namespaces
netlabel
networking	Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial	2011-01-13 10:05:56 -08:00
nfc	NFC: Driver for NXP Semiconductors PN544 NFC chip.	2011-01-13 08:03:19 -08:00
parisc
PCI	Documentation: pci.txt: fix typo	2010-07-11 22:17:45 +02:00
pcmcia	pcmcia: use autoconfiguration feature for ioports and iomem	2010-09-29 17:20:24 +02:00
power	PM: Fix references to basic-pm-debugging.txt in drivers-testing.txt	2010-12-24 15:02:41 +01:00
powerpc	Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial	2011-01-13 10:05:56 -08:00
pps	pps: add parallel port PPS signal generator	2011-01-13 08:03:21 -08:00
prctl
RCU	rcu: update documentation/comments for Lai's adoption patch	2010-11-29 22:01:59 -08:00
s390	Documentation: update broken web addresses.	2010-08-04 15:21:40 +02:00
scheduler	Docs: typo: Complete -> Completely	2010-11-02 22:47:39 -04:00
scsi	Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial	2011-01-13 10:05:56 -08:00
serial	pps: timestamp is always passed to dcd_change()	2011-01-13 08:03:20 -08:00
sh	sh: clkfwk: Kill off unused clk_set_rate_ex().	2010-11-15 18:25:12 +09:00
sound	Merge branch 'topic/hda' into for-linus	2011-01-13 08:37:19 +01:00
sparc
spi	arm/pxa2xx: reorgazine SSP and SPI header files	2010-12-01 12:18:33 +01:00
sysctl	sysctl: remove obsolete comments	2011-01-13 08:03:18 -08:00
telephony	Documentation: update broken web addresses.	2010-08-04 15:21:40 +02:00
thermal
timers	tree-wide: fix comment/printk typos	2010-11-01 15:38:34 -04:00
trace	Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial	2011-01-13 10:05:56 -08:00
uml	Documentation: update broken web addresses.	2010-08-04 15:21:40 +02:00
usb	USB: use the runtime-PM autosuspend implementation	2010-11-16 14:03:41 -08:00
video4linux	[media] cardlist: Update lists for em28xx and saa7134	2010-12-29 08:17:17 -02:00
vm	slub: Fix build breakage in Documentation/vm	2010-11-06 09:04:33 +02:00
w1	w1: DS2423 counter driver and documentation	2011-01-13 08:03:22 -08:00
watchdog	watchdog: docs: add an entry for imx2_wdt	2010-07-01 16:02:55 +00:00
wimax
x86	x86: support XZ-compressed kernel	2011-01-13 08:03:25 -08:00
zh_CN	Docs/Kconfig: Update: osdl.org -> linuxfoundation.org	2010-11-15 23:50:13 +01:00
.gitignore
00-INDEX	mmc: add erase, secure erase, trim and secure trim operations	2010-08-12 08:43:30 -07:00
apparmor.txt	AppArmor: update Maintainer and Documentation	2010-08-02 15:35:15 +10:00
applying-patches.txt
atomic_ops.txt
bad_memory.txt
basic_profiling.txt
binfmt_misc.txt	Documentation: update broken web addresses.	2010-08-04 15:21:40 +02:00
braille-console.txt
bt8xxgpio.txt
btmrvl.txt
BUG-HUNTING
bus-virt-phys-mapping.txt	documentation: fix almost duplicate filenames (IO/io-mapping.txt)	2010-07-20 17:49:30 +00:00
cachetlb.txt
Changes	Documentation update broken web addresses	2010-07-11 21:55:42 +02:00
circular-buffers.txt
coccinelle.txt	scripts/coccinelle: update for compatability with Coccinelle 0.2.4	2010-12-03 12:27:01 +01:00
CodingStyle
cpu-hotplug.txt	documentation: fix erroneous email address.	2010-08-11 23:04:10 +09:30
cpu-load.txt
cputopology.txt	topology/sysfs: Provide book id and siblings attributes	2010-09-09 20:41:25 +02:00
credentials.txt	CRED: Fix __task_cred()'s lockdep check and banner comment	2010-07-29 15:16:18 -07:00
dcdbas.txt
debugging-modules.txt
debugging-via-ohci1394.txt
dell_rbu.txt
devices.txt	Merge branch 'v4l_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-2.6	2010-10-28 09:35:11 -07:00
DMA-API-HOWTO.txt	Documentation: DMA-API-HOWTO.txt: rename ARCH_KMALLOC_MINALIGN to ARCH_DMA_MINALIGN	2010-08-14 11:56:46 -07:00
DMA-API.txt	dma-mapping: remove dma_is_consistent API	2010-08-11 08:59:21 -07:00
DMA-attributes.txt
DMA-ISA-LPC.txt
dmaengine.txt
dontdiff	Documentation/dontdiff: add further autogenerated files to ignore list	2011-01-06 09:59:37 -08:00
dynamic-debug-howto.txt	Dynamic Debug: Introduce ddebug_query= boot parameter	2010-10-22 10:16:42 -07:00
edac.txt	EDAC: Fix typos in Documentation/edac.txt	2010-11-25 17:32:47 +01:00
eisa.txt
email-clients.txt	Documentation/email-clients.txt: update Thunderbird docs with wordwrap plugin	2011-01-13 08:03:15 -08:00
feature-removal-schedule.txt	Merge branch 'hwmon-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jdelvare/staging	2011-01-13 10:24:29 -08:00
flexible-arrays.txt
futex-requeue-pi.txt
gcov.txt
gpio.txt	Revert "gpiolib: annotate gpio-intialization with __must_check"	2011-01-13 17:26:46 -08:00
highuid.txt
HOWTO	Documentation: update broken web addresses.	2010-08-04 15:21:40 +02:00
hw_random.txt
init.txt
initrd.txt
Intel-IOMMU.txt
intel_txt.txt	Documentation: update broken web addresses.	2010-08-04 15:21:40 +02:00
io-mapping.txt
io_ordering.txt
iostats.txt	remove extraneous 'is' from Documentation/iostats.txt	2011-01-03 14:00:28 +01:00
IPMI.txt
IRQ-affinity.txt
IRQ.txt
irqflags-tracing.txt
isapnp.txt
java.txt
kernel-doc-nano-HOWTO.txt	docbook: warn on unused doc entries	2010-09-11 16:49:21 -07:00
kernel-docs.txt	Documentation: update kernel-docs.txt	2011-01-06 09:59:38 -08:00
kernel-parameters.txt	Merge branch 'kvm-updates/2.6.38' of git://git.kernel.org/pub/scm/virt/kvm/kvm	2011-01-13 10:14:24 -08:00
keys-request-key.txt
keys-trusted-encrypted.txt	keys: add new trusted key-type	2010-11-29 08:55:25 +11:00
keys.txt
kmemcheck.txt
kmemleak.txt
kobject.txt
kprobes.txt	tree-wide: fix comment/printk typos	2010-11-01 15:38:34 -04:00
kref.txt
ldm.txt	Documentation: update broken web addresses.	2010-08-04 15:21:40 +02:00
leds-class.txt	led-class: always implement blinking	2010-11-12 07:55:32 -08:00
leds-lp3944.txt
local_ops.txt
lockdep-design.txt
lockstat.txt
logo.gif
logo.txt
magic-number.txt	take coda-private headers out of include/linux	2011-01-12 20:02:48 -05:00
Makefile	[media] Remove the old V4L1 v4lgrab.c file	2010-12-29 08:17:12 -02:00
ManagementStyle
mca.txt
md.txt	Documentation: update broken web addresses.	2010-08-04 15:21:40 +02:00
memory-barriers.txt
memory-hotplug.txt
memory.txt
mono.txt
mutex-design.txt	mutex: Fix annotations to include it in kernel-locking docbook	2010-09-03 08:19:51 +02:00
nmi_watchdog.txt
nommu-mmap.txt
numastat.txt
oops-tracing.txt	panic: Add taint flag TAINT_FIRMWARE_WORKAROUND ('I')	2010-05-19 08:37:43 +01:00
padata.txt	Documentation/padata.txt: fix typos etc.	2010-08-11 08:59:18 -07:00
parport-lowlevel.txt
parport.txt
pi-futex.txt
pnp.txt
preempt-locking.txt
printk-formats.txt
prio_tree.txt
rbtree.txt	Documentation: remove anticipatory scheduler info	2010-11-11 12:09:59 +01:00
rfkill.txt
robust-futex-ABI.txt
robust-futexes.txt
rt-mutex-design.txt	variable name fix to Documentation/rt-mutex-design.txt	2010-06-05 17:39:09 +02:00
rt-mutex.txt
rtc.txt
SAK.txt
SecurityBugs
SELinux.txt
serial-console.txt
sgi-ioc4.txt
sgi-visws.txt
SM501.txt
Smack.txt
sparse.txt	update email address	2010-07-19 10:56:54 +02:00
spinlocks.txt
stable_api_nonsense.txt
stable_kernel_rules.txt
SubmitChecklist	Documentation: update SubmitChecklist for O=objdir and kconfig testing	2010-05-24 07:31:20 -07:00
SubmittingDrivers	Documentation: update broken web addresses.	2010-08-04 15:21:40 +02:00
SubmittingPatches	SubmittingPatches: add more about patch descriptions	2010-08-09 20:45:05 -07:00
svga.txt
sysfs-rules.txt
sysrq.txt	documentation: update sysrq.txt magic sysrq keys	2010-10-26 17:32:41 -07:00
tomoyo.txt	TOMOYO: Update version to 2.3.0	2010-08-02 15:35:10 +10:00
unaligned-memory-access.txt
unicode.txt
unshare.txt
VGA-softcursor.txt
vgaarbiter.txt
video-output.txt
volatile-considered-harmful.txt
workqueue.txt	workqueue: add and use WQ_MEM_RECLAIM flag	2010-10-11 15:20:26 +02:00
xz.txt	decompressors: add XZ decompressor module	2011-01-13 08:03:24 -08:00
zorro.txt