Johannes Weiner 1306a85aed mm: embed the memcg pointer directly into struct page ... Memory cgroups used to have 5 per-page pointers. To allow users to disable that amount of overhead during runtime, those pointers were allocated in a separate array, with a translation layer between them and struct page. There is now only one page pointer remaining: the memcg pointer, that indicates which cgroup the page is associated with when charged. The complexity of runtime allocation and the runtime translation overhead is no longer justified to save that *potential* 0.19% of memory. With CONFIG_SLUB, page->mem_cgroup actually sits in the doubleword padding after the page->private member and doesn't even increase struct page, and then this patch actually saves space. Remaining users that care can still compile their kernels without CONFIG_MEMCG. text data bss dec hex filename 8828345 1725264 983040 11536649 b00909 vmlinux.old 8827425 1725264 966656 11519345 afc571 vmlinux.new [mhocko@suse.cz: update Documentation/cgroups/memory.txt] Signed-off-by: Johannes Weiner <hannes@cmpxchg.org> Acked-by: Michal Hocko <mhocko@suse.cz> Acked-by: Vladimir Davydov <vdavydov@parallels.com> Acked-by: David S. Miller <davem@davemloft.net> Acked-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Cc: "Kirill A. Shutemov" <kirill@shutemov.name> Cc: Michal Hocko <mhocko@suse.cz> Cc: Vladimir Davydov <vdavydov@parallels.com> Cc: Tejun Heo <tj@kernel.org> Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com> Acked-by: Konstantin Khlebnikov <koct9i@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>		2014-12-10 17:41:09 -08:00
..
ABI	IB/srp: Add multichannel support	2014-11-12 12:05:24 +01:00
DocBook	Merge tag 'docs-for-linus' of git://git.lwn.net/linux-2.6	2014-10-31 11:55:40 -07:00
EDID	…
PCI	doc: replace "practise" with "practice" in Documentation	2014-06-19 15:28:56 +02:00
RCU	Merge branches 'torture.2014.11.03a', 'cpu.2014.11.03a', 'doc.2014.11.13a', 'fixes.2014.11.13a', 'signal.2014.10.29a' and 'rt.2014.10.29a' into HEAD	2014-11-13 10:39:04 -08:00
accounting	Documentation: use subdir-y to avoid unnecessary built-in.o files	2014-09-26 11:02:55 +02:00
acpi	mfd: Add ACPI support	2014-09-26 08:24:05 +01:00
aoe	…
arm	Allwinner Core Additions for 3.19	2014-11-20 17:23:57 +01:00
arm64	arm64: Emulate CP15 Barrier instructions	2014-11-20 16:34:48 +00:00
auxdisplay	Documentation: use subdir-y to avoid unnecessary built-in.o files	2014-09-26 11:02:55 +02:00
backlight	…
blackfin	Documentation: add makefiles for more targets	2014-09-26 11:02:56 +02:00
block	scsi: add new scsi-command flag for tagged commands	2014-11-12 11:19:40 +01:00
blockdev	zram: report maximum used memory	2014-10-09 22:26:02 -04:00
bus-devices	…
cdrom	…
cgroups	mm: embed the memcg pointer directly into struct page	2014-12-10 17:41:09 -08:00
connector	w1: optional bundling of netlink kernel replies	2014-05-27 13:56:21 -07:00
console	…
cpu-freq	intel_pstate: Update documentation of {max,min}_perf_pct sysfs files	2014-07-07 01:22:19 +02:00
cpuidle	…
cris	…
crypto	…
development-process	Documentation: remove outdated references to the linux-next wiki	2014-10-28 09:06:11 -04:00
device-mapper	dm cache policy mq: simplify ability to promote sequential IO to the cache	2014-11-10 15:25:30 -05:00
devicetree	Merge branch 'irq-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2014-12-10 08:38:57 -08:00
driver-model	PCI changes for the v3.18 merge window:	2014-10-09 15:03:49 -04:00
dvb	[media] get_dvb_firmware: Update firmware of ITEtech IT9135	2014-09-21 17:03:04 -03:00
early-userspace	…
extcon	…
fault-injection	…
fb	…
filesystems	ovl: rename filesystem type to "overlay"	2014-11-20 16:39:59 +01:00
firmware_class	doc: fix minor typos in firmware_class README	2014-07-17 18:43:40 -07:00
fmc	…
frv	…
gpio	This is the bulk of GPIO changes for the v3.18 development	2014-10-09 14:58:15 -04:00
hid	HID: uhid: update documentation	2014-08-25 03:28:09 -05:00
hwmon	hwmon: (tmp401) Detect TMP435 on all addresses it supports	2014-12-08 06:48:37 -08:00
i2c	i2c: i801: Add Device IDs for Intel Sunrise Point PCH	2014-10-16 09:16:22 +02:00
i2o	…
ia64	Documentation: use subdir-y to avoid unnecessary built-in.o files	2014-09-26 11:02:55 +02:00
ide	…
infiniband	IB/mad: add new ioctl to ABI to support new registration options	2014-08-10 20:36:00 -07:00
input	Input: elantech - update the documentation	2014-11-13 17:50:23 -08:00
ioctl	cxl: Add documentation for userspace APIs	2014-10-08 20:16:19 +11:00
isdn	…
ja_JP	…
kbuild	Documentation: kbuild: Improve grammar	2014-08-19 10:02:56 +02:00
kdump	Documentation/kdump/kdump.txt: add ARM description	2014-08-29 16:28:17 -07:00
ko_KR	…
laptops	Documentation: update .gitignore files	2014-09-26 11:02:59 +02:00
leds	…
locking	Merge branch 'core-locking-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2014-12-09 19:59:22 -08:00
m68k	…
memory-devices	…
metag	…
mic	Documentation: update include path for mpssd	2014-10-03 15:48:20 +02:00
mips	Documentation: au1xxx-ide.c has moved	2014-08-26 09:35:53 +02:00
misc-devices	Documentation: use subdir-y to avoid unnecessary built-in.o files	2014-09-26 11:02:55 +02:00
mmc	…
mn10300	…
mtd	MTD updates for 3.16:	2014-06-11 08:35:34 -07:00
namespaces	…
netlabel	…
networking	net-timestamp: Fix a documentation typo	2014-11-25 13:35:26 -05:00
nfc	…
nios2	Documentation: Add documentation for Nios2 architecture	2014-12-08 12:56:06 +08:00
parisc	…
pcmcia	Documentation: use subdir-y to avoid unnecessary built-in.o files	2014-09-26 11:02:55 +02:00
phy	…
platform	Documentation: Add list of laptop models supported by the Compal driver	2014-06-10 19:11:06 -04:00
power	Merge branch 'pm-qos'	2014-10-23 23:02:36 +02:00
powerpc	cxl: Add documentation for userspace APIs	2014-10-08 20:16:19 +11:00
pps	…
prctl	Documentation: Restrict TSC test code to x86	2014-10-28 08:46:27 -04:00
pti	…
ptp	ptp: restore the makefile for building the test program.	2014-10-24 16:07:10 -04:00
rapidio	rapidio/tsi721_dma: rework scatter-gather list handling	2014-08-08 15:57:24 -07:00
s390	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial into next	2014-06-04 08:50:34 -07:00
scheduler	Documentation/scheduler/sched-deadline.txt: Add minimal main() appendix	2014-09-16 10:23:45 +02:00
scsi	libsas: remove task_collector mode	2014-11-27 16:40:24 +01:00
security	Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security	2014-10-12 10:13:55 -04:00
serial	TTY/Serial driver patches for 3.18-rc1	2014-10-08 06:52:11 -04:00
sh	…
sound	ALSA: virtuoso: add Xonar Essence STX II support	2014-08-04 15:20:48 +02:00
spi	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/doc	2014-10-07 21:14:57 -04:00
sysctl	coredump: add %i/%I in core_pattern to report the tid of the crashed thread	2014-10-14 02:18:21 +02:00
target	target: Add documentation on the target userspace pass-through driver	2014-10-02 21:35:54 -07:00
thermal	drm/nouveau/doc: update the thermal documentation	2014-06-17 14:50:17 +10:00
timers	Documentation: update .gitignore files	2014-09-26 11:02:59 +02:00
tpm	…
trace	mm: trace-vmscan-postprocess.pl: report the number of file/anon pages respectively	2014-08-06 18:01:20 -07:00
usb	usb: hub: rename khubd to hub_wq in documentation and comments	2014-09-23 22:33:19 -07:00
vDSO	vdso: don't require 64-bit math in standalone test	2014-10-25 10:53:44 -04:00
video4linux	[media] vivid: default to single planar device instances	2014-11-03 14:43:26 -02:00
virtual	Changes for KVM for arm/arm64 for 3.18	2014-09-27 11:03:33 +02:00
vm	Docs: Document that the sticky bit is understood by hugetlbfs	2014-10-22 14:26:04 -04:00
w1	w1: new w1_ds2406 driver	2014-06-19 17:45:14 -07:00
watchdog	Documentation: use subdir-y to avoid unnecessary built-in.o files	2014-09-26 11:02:55 +02:00
wimax	…
x86	x86, mpx: Add documentation on Intel MPX	2014-11-18 00:58:54 +01:00
xtensa	…
zh_CN	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial	2014-08-06 21:03:53 -07:00
00-INDEX	locking/Documentation: Move locking related docs into Documentation/locking/	2014-08-13 10:32:03 +02:00
BUG-HUNTING	…
Changes	Documentation: remove obsolete pcmcia-cs from Changes	2014-09-09 10:35:58 +02:00
CodingStyle	CodingStyle: fix a minor typo	2014-08-26 09:35:54 +02:00
DMA-API-HOWTO.txt	Documentation: correct parameter error for dma_mapping_error	2014-09-26 11:22:29 +02:00
DMA-API.txt	DMA-API: Capitalize "CPU" consistently	2014-05-26 17:28:27 -06:00
DMA-ISA-LPC.txt	…
DMA-attributes.txt	…
HOWTO	Documentation: remove outdated references to the linux-next wiki	2014-10-28 09:06:11 -04:00
IPMI.txt	…
IRQ-affinity.txt	…
IRQ-domain.txt	irqdomain: Introduce new interfaces to support hierarchy irqdomains	2014-11-23 13:01:45 +01:00
IRQ.txt	…
Intel-IOMMU.txt	…
Makefile	Documentation: add makefiles for more targets	2014-09-26 11:02:56 +02:00
ManagementStyle	…
SAK.txt	…
SM501.txt	…
SecurityBugs	…
SubmitChecklist	…
SubmittingDrivers	doc: SubmittingPatches: remove dead link, kerneltrap.org no longer works	2014-06-19 15:15:27 +02:00
SubmittingPatches	Documentation/SubmittingPatches: Reported-by tags and permission	2014-10-29 08:56:46 -04:00
VGA-softcursor.txt	…
applying-patches.txt	Documentation: change "&" to "and" in Documentation/applying-patches.txt	2014-09-26 11:10:11 +02:00
assoc_array.txt	…
atomic_ops.txt	documentation: Add atomic_long_t to atomic_ops.txt	2014-11-13 10:34:54 -08:00
bad_memory.txt	…
basic_profiling.txt	…
bcache.txt	…
binfmt_misc.txt	binfmt_misc: touch up documentation a bit	2014-10-14 02:18:16 +02:00
braille-console.txt	…
bt8xxgpio.txt	…
btmrvl.txt	…
bus-virt-phys-mapping.txt	…
cachetlb.txt	…
circular-buffers.txt	…
clk.txt	…
coccinelle.txt	…
cpu-hotplug.txt	…
cpu-load.txt	…
cputopology.txt	…
crc32.txt	…
dcdbas.txt	…
debugging-modules.txt	…
debugging-via-ohci1394.txt	firewire: revert to 4 GB RDMA, fix protocols using Memory Space	2014-05-29 15:50:30 +02:00
dell_rbu.txt	…
devices.txt	…
digsig.txt	…
dma-buf-sharing.txt	Documentation/dma-buf-sharing.txt: update API descriptions	2014-08-28 11:57:24 +05:30
dmaengine.txt	dmaengine: Update documentation for inline wrapper	2014-08-28 12:37:55 +05:30
dmatest.txt	…
dontdiff	…
dynamic-debug-howto.txt	…
edac.txt	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial into next	2014-06-04 08:50:34 -07:00
efi-stub.txt	…
eisa.txt	…
email-clients.txt	Documentation: add section about git to email-clients.txt	2014-06-29 13:38:33 -07:00
flexible-arrays.txt	…
futex-requeue-pi.txt	…
gcov.txt	…
highuid.txt	…
hsi.txt	…
hw_random.txt	…
hwspinlock.txt	…
init.txt	…
initrd.txt	…
intel_txt.txt	…
io-mapping.txt	…
io_ordering.txt	…
iostats.txt	…
irqflags-tracing.txt	…
isapnp.txt	…
java.txt	…
kernel-doc-nano-HOWTO.txt	…
kernel-docs.txt	…
kernel-parameters.txt	Merge branch 'rcu/next' of git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu into core/rcu	2014-11-20 08:57:58 +01:00
kernel-per-CPU-kthreads.txt	…
kmemcheck.txt	…
kmemleak.txt	Documentation: Add CONFIG_DEBUG_KMEMLEAK_DEFAULT_OFF case	2014-10-24 13:59:03 -04:00
kobject.txt	…
kprobes.txt	Documentation/kprobes: add s390 to list of supported architectures	2014-09-09 08:53:27 +02:00
kref.txt	…
ldm.txt	…
local_ops.txt	…
lockup-watchdogs.txt	lockup-watchdogs: Fix a typo	2014-08-26 09:35:52 +02:00
logo.gif	…
logo.txt	…
lzo.txt	Documentation: lzo: document part of the encoding	2014-09-28 11:08:00 +02:00
magic-number.txt	…
mailbox.txt	doc: add documentation for mailbox framework	2014-10-08 10:39:41 +05:30
md.txt	…
media-framework.txt	…
memory-barriers.txt	Merge branch 'core-rcu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2014-12-09 20:23:19 -08:00
memory-hotplug.txt	memory-hotplug: add sysfs valid_zones attribute	2014-10-09 22:25:52 -04:00
module-signing.txt	…
mono.txt	…
nommu-mmap.txt	…
numastat.txt	…
oops-tracing.txt	panic: add TAINT_SOFTLOCKUP	2014-08-08 15:57:24 -07:00
padata.txt	…
parport-lowlevel.txt	…
parport.txt	…
percpu-rw-semaphore.txt	…
phy.txt	phy: core: Let node ptr of PHY point to PHY and not of PHY provider	2014-07-22 12:46:11 +05:30
pi-futex.txt	…
pinctrl.txt	pinctrl: clean up after enable refactoring	2014-09-04 10:05:07 +02:00
pnp.txt	…
preempt-locking.txt	…
printk-formats.txt	lib/vsprintf: add %*pE[achnops] format specifier	2014-10-14 02:18:26 +02:00
pwm.txt	…
ramoops.txt	…
rbtree.txt	…
remoteproc.txt	…
rfkill.txt	…
robust-futex-ABI.txt	…
robust-futexes.txt	…
rpmsg.txt	…
rtc.txt	…
serial-console.txt	…
sgi-ioc4.txt	…
smsc_ece1099.txt	…
sparse.txt	…
stable_api_nonsense.txt	…
stable_kernel_rules.txt	stable_kernel_rules: Add pointer to netdev-FAQ for network patches	2014-07-09 15:54:27 -07:00
static-keys.txt	…
svga.txt	…
sysfs-rules.txt	Documentation/sysfs-rules.txt: Add device attribute error code documentation	2014-09-19 14:44:51 -07:00
sysrq.txt	…
this_cpu_ops.txt	Docs: this_cpu_ops: remove redundant add forms	2014-09-26 11:03:00 +02:00
unaligned-memory-access.txt	…
unicode.txt	…
unshare.txt	…
vfio.txt	drivers/vfio: EEH support for VFIO PCI device	2014-08-05 15:28:48 +10:00
vgaarbiter.txt	…
video-output.txt	…
vme_api.txt	…
volatile-considered-harmful.txt	…
workqueue.txt	…
xillybus.txt	xillybus: Move out of staging	2014-09-23 23:44:16 -07:00
xz.txt	…
zorro.txt	…