Vladimir Davydov f074a8f49e proc: export idle flag via kpageflags ... As noted by Minchan, a benefit of reading idle flag from /proc/kpageflags is that one can easily filter dirty and/or unevictable pages while estimating the size of unused memory. Note that idle flag read from /proc/kpageflags may be stale in case the page was accessed via a PTE, because it would be too costly to iterate over all page mappings on each /proc/kpageflags read to provide an up-to-date value. To make sure the flag is up-to-date one has to read /sys/kernel/mm/page_idle/bitmap first. Signed-off-by: Vladimir Davydov <vdavydov@parallels.com> Reviewed-by: Andres Lagar-Cavilla <andreslc@google.com> Cc: Minchan Kim <minchan@kernel.org> Cc: Raghavendra K T <raghavendra.kt@linux.vnet.ibm.com> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: Michal Hocko <mhocko@suse.cz> Cc: Greg Thelen <gthelen@google.com> Cc: Michel Lespinasse <walken@google.com> Cc: David Rientjes <rientjes@google.com> Cc: Pavel Emelyanov <xemul@parallels.com> Cc: Cyrill Gorcunov <gorcunov@openvz.org> Cc: Jonathan Corbet <corbet@lwn.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>		2015-09-10 13:29:01 -07:00
..
ABI	xen: features and fixes for 4.3-rc0	2015-09-08 11:46:48 -07:00
accounting
acpi
aoe
arm	ARM: SoC platform updates for v4.3	2015-09-01 12:18:40 -07:00
arm64
auxdisplay
backlight
blackfin
block
blockdev	zsmalloc: account the number of compacted pages	2015-09-08 15:35:28 -07:00
bus-devices
cdrom
cgroups	Merge branch 'for-4.3-unified-base' into for-4.3	2015-08-25 14:19:29 -04:00
cma
connector
console
cpu-freq	cpufreq: remove redundant CPUFREQ_INCOMPATIBLE notifier event	2015-09-01 15:50:38 +02:00
cpuidle
cris
crypto
development-process
device-mapper	dm raid: document RAID 4/5/6 discard support	2015-08-31 15:05:31 -04:00
devicetree	IPMI updates for 4.3	2015-09-08 18:19:17 -07:00
dmaengine
DocBook	media updates for v4.3-rc1	2015-09-05 18:21:14 -07:00
driver-model
dvb
early-userspace
EDID
extcon
fault-injection
fb
features	Documentation/features/vm: add feature description and arch support status for batched TLB flush after unmap	2015-09-04 16:54:41 -07:00
filesystems	Merge branch 'akpm' (patches from Andrew)	2015-09-08 17:52:23 -07:00
firmware_class
fmc
frv
gpio
hid
hwmon	hwmon: (fam15h_power) Add documentation for new processors support	2015-08-27 07:51:15 -07:00
i2c	i2c: support 10 bit and slave addresses in sysfs 'new_device'	2015-08-24 14:05:15 +02:00
ia64
ide
infiniband	IB/hfi1: add driver files	2015-08-28 22:59:36 -04:00
input	Merge branch 'next' into for-linus	2015-09-03 10:01:44 -07:00
ioctl	platform-drivers-x86 for 4.3-1	2015-09-08 16:26:18 -07:00
isdn
ja_JP
kbuild
kdump
ko_KR
laptops
leds
locking
m68k
memory-devices
metag
mic
mips
misc-devices
mmc
mn10300
mtd
namespaces
netlabel
networking	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next	2015-09-03 08:08:17 -07:00
nfc
nios2
nvdimm
nvmem
parisc
PCI
pcmcia
phy
platform
power	Power management and ACPI material for v4.3-rc1	2015-09-01 19:45:46 -07:00
powerpc	SCSI misc on 20150901	2015-09-02 12:22:54 -07:00
pps
prctl
pti
ptp
rapidio
RCU
s390
scheduler
scsi
security
serial
sh
sound
spi
sysctl	mm/page_alloc.c: fix a misleading comment	2015-09-08 15:35:28 -07:00
target
thermal
timers
tpm
trace	Mostly this is just clean ups and micro optimizations.	2015-09-08 14:04:14 -07:00
usb
vDSO
video4linux
virtual
vm	proc: export idle flag via kpageflags	2015-09-10 13:29:01 -07:00
w1
watchdog
wimax
x86	Merge branch 'x86-mm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2015-09-01 10:07:40 -07:00
xtensa
zh_CN
00-INDEX
adding-syscalls.txt
applying-patches.txt
assoc_array.txt
atomic_ops.txt
bad_memory.txt
basic_profiling.txt
bcache.txt
binfmt_misc.txt
braille-console.txt
bt8xxgpio.txt
btmrvl.txt
BUG-HUNTING
bus-virt-phys-mapping.txt
cachetlb.txt
Changes	Documentation/Changes: Now need OpenSSL devel packages for module signing	2015-08-28 08:00:30 +10:00
circular-buffers.txt
clk.txt
coccinelle.txt
CodeOfConflict
CodingStyle
cpu-hotplug.txt
cpu-load.txt
cputopology.txt
crc32.txt
dcdbas.txt
debugging-modules.txt
debugging-via-ohci1394.txt
dell_rbu.txt
devices.txt
digsig.txt
DMA-API-HOWTO.txt
DMA-API.txt	mm: add dma_pool_zalloc() call to DMA API	2015-09-08 15:35:28 -07:00
DMA-attributes.txt
dma-buf-sharing.txt
DMA-ISA-LPC.txt
dontdiff
dynamic-debug-howto.txt
edac.txt
efi-stub.txt
eisa.txt
email-clients.txt
flexible-arrays.txt
futex-requeue-pi.txt
gcov.txt
gdb-kernel-debugging.txt
highuid.txt
HOWTO	docs: update HOWTO for 3.x -> 4.x versioning	2015-08-24 11:28:17 -06:00
hsi.txt
hw_random.txt
hwspinlock.txt
init.txt
initrd.txt
intel_txt.txt
Intel-IOMMU.txt	x86/vt-d: Fix documentation of DRHD	2015-08-25 10:44:49 +02:00
io_ordering.txt
io-mapping.txt
iostats.txt
IPMI.txt
IRQ-affinity.txt
IRQ-domain.txt
IRQ.txt
irqflags-tracing.txt
isapnp.txt
java.txt
kasan.txt
kernel-doc-nano-HOWTO.txt
kernel-docs.txt
kernel-parameters.txt	xen: features and fixes for 4.3-rc0	2015-09-08 11:46:48 -07:00
kernel-per-CPU-kthreads.txt
kmemcheck.txt
kmemleak.txt
kobject.txt
kprobes.txt
kref.txt
kselftest.txt
ldm.txt
local_ops.txt
lockup-watchdogs.txt
logo.gif
logo.txt
lzo.txt
magic-number.txt
mailbox.txt
Makefile
ManagementStyle
md-cluster.txt	md-cluster: fix deadlock issue on message lock	2015-08-31 19:41:41 +02:00
md.txt
media-framework.txt
memory-barriers.txt	Merge branch 'locking-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2015-09-03 15:46:07 -07:00
memory-hotplug.txt
men-chameleon-bus.txt
module-signing.txt
mono.txt
nommu-mmap.txt
ntb.txt
numastat.txt
oops-tracing.txt
padata.txt
parport-lowlevel.txt
parport.txt
percpu-rw-semaphore.txt
phy.txt
pi-futex.txt
pinctrl.txt
pnp.txt
preempt-locking.txt
printk-formats.txt
pwm.txt
ramoops.txt
rbtree.txt
remoteproc.txt
rfkill.txt
robust-futex-ABI.txt
robust-futexes.txt
rpmsg.txt
rtc.txt
SAK.txt
SecurityBugs
serial-console.txt
sgi-ioc4.txt
SM501.txt
smsc_ece1099.txt
sparse.txt
stable_api_nonsense.txt
stable_kernel_rules.txt
static-keys.txt
SubmitChecklist
SubmittingDrivers
SubmittingPatches	Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial	2015-09-01 18:46:42 -07:00
svga.txt
sysfs-rules.txt
sysrq.txt	mm, oom: do not panic for oom kills triggered from sysrq	2015-09-08 15:35:28 -07:00
this_cpu_ops.txt
unaligned-memory-access.txt
unicode.txt
unshare.txt
vfio.txt
VGA-softcursor.txt
vgaarbiter.txt
video-output.txt
vme_api.txt
volatile-considered-harmful.txt
workqueue.txt
xillybus.txt
xz.txt
zorro.txt