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Minchan Kim cb7925d8da BACKPORT: mm: /proc/pid/smaps:: show proportional swap share of the mapping 
We want to know per-process workingset size for smart memory management
on userland and we use swap(ex, zram) heavily to maximize memory
efficiency so workingset includes swap as well as RSS.

On such system, if there are lots of shared anonymous pages, it's really
hard to figure out exactly how many each process consumes memory(ie, rss
+ wap) if the system has lots of shared anonymous memory(e.g, android).

This patch introduces SwapPss field on /proc/<pid>/smaps so we can get
more exact workingset size per process.

Bongkyu tested it. Result is below.

1. 50M used swap
SwapTotal: 461976 kB
SwapFree: 411192 kB

$ adb shell cat /proc/*/smaps | grep "SwapPss:" | awk '{sum += $2} END {print sum}';
48236
$ adb shell cat /proc/*/smaps | grep "Swap:" | awk '{sum += $2} END {print sum}';
141184

2. 240M used swap
SwapTotal: 461976 kB
SwapFree: 216808 kB

$ adb shell cat /proc/*/smaps | grep "SwapPss:" | awk '{sum += $2} END {print sum}';
230315
$ adb shell cat /proc/*/smaps | grep "Swap:" | awk '{sum += $2} END {print sum}';
1387744

[akpm@linux-foundation.org: simplify kunmap_atomic() call]
Signed-off-by: Minchan Kim <minchan@kernel.org>
Reported-by: Bongkyu Kim <bongkyu.kim@lge.com>
Tested-by: Bongkyu Kim <bongkyu.kim@lge.com>
Cc: Hugh Dickins <hughd@google.com>
Cc: Sergey Senozhatsky <sergey.senozhatsky.work@gmail.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Jerome Marchand <jmarchan@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

Bug: 26190646
Change-Id: Idf92d682fdef432bdd66e530a7e7cdff8f375db1
Signed-off-by: Thierry Strudel <tstrudel@google.com>
2017-12-27 22:48:40 +03:00
..
9p Merge remote-tracking branch 'stable/linux-3.4.y' into lineage-15.1 2017-12-27 17:13:15 +03:00
adfs fs: Limit sys_mount to only request filesystem modules. 2017-09-22 19:12:20 +03:00
affs fs: Limit sys_mount to only request filesystem modules. 2017-09-22 19:12:20 +03:00
afs fs: Limit sys_mount to only request filesystem modules. 2017-09-22 19:12:20 +03:00
autofs4 Merge remote-tracking branch 'stable/linux-3.4.y' into lineage-15.1 2017-12-27 17:13:15 +03:00
befs fs: Limit sys_mount to only request filesystem modules. 2017-09-22 19:12:20 +03:00
bfs fs: Limit sys_mount to only request filesystem modules. 2017-09-22 19:12:20 +03:00
btrfs Merge remote-tracking branch 'stable/linux-3.4.y' into lineage-15.1 2017-12-27 17:13:15 +03:00
cachefiles
ceph Merge remote-tracking branch 'stable/linux-3.4.y' into lineage-15.1 2017-12-27 17:13:15 +03:00
cifs Merge remote-tracking branch 'stable/linux-3.4.y' into lineage-15.1 2017-12-27 17:13:15 +03:00
coda fs: Limit sys_mount to only request filesystem modules. 2017-09-22 19:12:20 +03:00
configfs Merge remote-tracking branch 'stable/linux-3.4.y' into lineage-15.1 2017-12-27 17:13:15 +03:00
cramfs fs: Limit sys_mount to only request filesystem modules. 2017-09-22 19:12:20 +03:00
crypto ext4/fscrypto: avoid RCU lookup in d_revalidate 2016-10-29 23:12:37 +08:00
debugfs Merge remote-tracking branch 'stable/linux-3.4.y' into lineage-15.1 2017-12-27 17:13:15 +03:00
devpts Merge remote-tracking branch 'stable/linux-3.4.y' into lineage-15.1 2017-12-27 17:13:15 +03:00
dlm
ecryptfs Merge remote-tracking branch 'stable/linux-3.4.y' into lineage-15.1 2017-12-27 17:13:15 +03:00
efs fs: Limit sys_mount to only request filesystem modules. 2017-09-22 19:12:20 +03:00
exofs Merge remote-tracking branch 'stable/linux-3.4.y' into lineage-15.1 2017-12-27 17:13:15 +03:00
exportfs move d_rcu from overlapping d_child to overlapping d_alias 2017-09-22 19:11:55 +03:00
ext2 Merge remote-tracking branch 'stable/linux-3.4.y' into lineage-15.1 2017-12-27 17:13:15 +03:00
ext3 Merge remote-tracking branch 'stable/linux-3.4.y' into lineage-15.1 2017-12-27 17:13:15 +03:00
ext4 ext4: Add support for FIDTRIM, a best-effort ioctl for deep discard trim 2017-12-27 22:40:01 +03:00
f2fs fs: Limit sys_mount to only request filesystem modules. 2017-09-22 19:12:20 +03:00
fat Merge remote-tracking branch 'stable/linux-3.4.y' into lineage-15.1 2017-12-27 17:13:15 +03:00
freevxfs fs: Limit sys_mount to only request filesystem modules. 2017-09-22 19:12:20 +03:00
fscache
fuse Merge remote-tracking branch 'stable/linux-3.4.y' into lineage-15.1 2017-12-27 17:13:15 +03:00
gfs2 Merge remote-tracking branch 'stable/linux-3.4.y' into lineage-15.1 2017-12-27 17:13:15 +03:00
hfs Merge remote-tracking branch 'stable/linux-3.4.y' into lineage-15.1 2017-12-27 17:13:15 +03:00
hfsplus Merge remote-tracking branch 'stable/linux-3.4.y' into lineage-15.1 2017-12-27 17:13:15 +03:00
hostfs
hpfs
hppfs fs: Limit sys_mount to only request filesystem modules. 2017-09-22 19:12:20 +03:00
hugetlbfs Merge remote-tracking branch 'stable/linux-3.4.y' into lineage-15.1 2017-12-27 17:13:15 +03:00
isofs Merge remote-tracking branch 'stable/linux-3.4.y' into lineage-15.1 2017-12-27 17:13:15 +03:00
jbd
jbd2
jffs2 Merge remote-tracking branch 'stable/linux-3.4.y' into lineage-15.1 2017-12-27 17:13:15 +03:00
jfs Merge remote-tracking branch 'stable/linux-3.4.y' into lineage-15.1 2017-12-27 17:13:15 +03:00
lockd
logfs fs: Limit sys_mount to only request filesystem modules. 2017-09-22 19:12:20 +03:00
minix fs: Limit sys_mount to only request filesystem modules. 2017-09-22 19:12:20 +03:00
ncpfs Merge remote-tracking branch 'stable/linux-3.4.y' into lineage-15.1 2017-12-27 17:13:15 +03:00
nfs Merge remote-tracking branch 'stable/linux-3.4.y' into lineage-15.1 2017-12-27 17:13:15 +03:00
nfs_common
nfsd Merge remote-tracking branch 'stable/linux-3.4.y' into lineage-15.1 2017-12-27 17:13:15 +03:00
nilfs2 Merge remote-tracking branch 'stable/linux-3.4.y' into lineage-15.1 2017-12-27 17:13:15 +03:00
nls
notify Merge remote-tracking branch 'stable/linux-3.4.y' into lineage-15.1 2017-12-27 17:13:15 +03:00
ntfs fs: Limit sys_mount to only request filesystem modules. 2017-09-22 19:12:20 +03:00
ocfs2 Merge remote-tracking branch 'stable/linux-3.4.y' into lineage-15.1 2017-12-27 17:13:15 +03:00
omfs Merge remote-tracking branch 'stable/linux-3.4.y' into lineage-15.1 2017-12-27 17:13:15 +03:00
openpromfs fs: Limit sys_mount to only request filesystem modules. 2017-09-22 19:12:20 +03:00
proc BACKPORT: mm: /proc/pid/smaps:: show proportional swap share of the mapping 2017-12-27 22:48:40 +03:00
pstore
qnx4 fs: Limit sys_mount to only request filesystem modules. 2017-09-22 19:12:20 +03:00
qnx6 fs: Limit sys_mount to only request filesystem modules. 2017-09-22 19:12:20 +03:00
quota
ramfs
reiserfs Merge remote-tracking branch 'stable/linux-3.4.y' into lineage-15.1 2017-12-27 17:13:15 +03:00
romfs fs: Limit sys_mount to only request filesystem modules. 2017-09-22 19:12:20 +03:00
sdcardfs sdcardfs: Backport and use some 3.10 hlist/hash macros 2017-10-06 10:28:58 +03:00
squashfs
sysfs
sysv Merge remote-tracking branch 'stable/linux-3.4.y' into lineage-15.1 2017-12-27 17:13:15 +03:00
ubifs Merge remote-tracking branch 'stable/linux-3.4.y' into lineage-15.1 2017-12-27 17:13:15 +03:00
udf udf: Check path length when reading symlink 2017-07-10 01:48:57 +03:00
ufs fs: Limit sys_mount to only request filesystem modules. 2017-09-22 19:12:20 +03:00
xfs Merge remote-tracking branch 'stable/linux-3.4.y' into lineage-15.1 2017-12-27 17:13:15 +03:00
yaffs2
aio.c Merge remote-tracking branch 'stable/linux-3.4.y' into lineage-15.1 2017-12-27 17:13:15 +03:00
anon_inodes.c
attr.c Merge remote-tracking branch 'stable/linux-3.4.y' into lineage-15.1 2017-12-27 17:13:15 +03:00
bad_inode.c
binfmt_aout.c
binfmt_elf.c
binfmt_elf_fdpic.c
binfmt_em86.c
binfmt_flat.c
binfmt_misc.c Merge remote-tracking branch 'stable/linux-3.4.y' into lineage-15.1 2017-12-27 17:13:15 +03:00
binfmt_script.c
binfmt_som.c
bio-integrity.c
bio.c
block_dev.c
buffer.c Merge remote-tracking branch 'stable/linux-3.4.y' into lineage-15.1 2017-12-27 17:13:15 +03:00
char_dev.c
compat.c
compat_binfmt_elf.c
compat_ioctl.c Merge remote-tracking branch 'stable/linux-3.4.y' into lineage-15.1 2017-12-27 17:13:15 +03:00
dcache.c Merge remote-tracking branch 'stable/linux-3.4.y' into lineage-15.1 2017-12-27 17:13:15 +03:00
dcookies.c
direct-io.c
drop_caches.c
eventfd.c
eventpoll.c Merge remote-tracking branch 'stable/linux-3.4.y' into lineage-15.1 2017-12-27 17:13:15 +03:00
exec.c Merge remote-tracking branch 'stable/linux-3.4.y' into lineage-15.1 2017-12-27 17:13:15 +03:00
fcntl.c
fhandle.c
fifo.c
file.c
file_table.c
filesystems.c fs: Limit sys_mount to only request filesystem modules. 2017-09-22 19:12:20 +03:00
fs-writeback.c Merge remote-tracking branch 'stable/linux-3.4.y' into lineage-15.1 2017-12-27 17:13:15 +03:00
fs_struct.c sdcardfs: override umask on mkdir and create 2017-09-22 19:12:02 +03:00
generic_acl.c BACKPORT: posix_acl: Clear SGID bit when setting file permissions 2017-06-26 20:26:17 +03:00
inode.c Merge remote-tracking branch 'stable/linux-3.4.y' into lineage-15.1 2017-12-27 17:13:15 +03:00
internal.h Merge remote-tracking branch 'stable/linux-3.4.y' into lineage-15.1 2017-12-27 17:13:15 +03:00
ioctl.c
ioprio.c Merge remote-tracking branch 'stable/linux-3.4.y' into lineage-15.1 2017-12-27 17:13:15 +03:00
Kconfig Included sdcardfs source code for kernel 3.0 2017-09-22 19:11:56 +03:00
Kconfig.binfmt
libfs.c move d_rcu from overlapping d_child to overlapping d_alias 2017-09-22 19:11:55 +03:00
locks.c
Makefile Included sdcardfs source code for kernel 3.0 2017-09-22 19:11:56 +03:00
mbcache.c
mount.h
mpage.c
namei.c Merge remote-tracking branch 'stable/linux-3.4.y' into lineage-15.1 2017-12-27 17:13:15 +03:00
namespace.c Merge remote-tracking branch 'stable/linux-3.4.y' into lineage-15.1 2017-12-27 17:13:15 +03:00
no-block.c
open.c Merge remote-tracking branch 'stable/linux-3.4.y' into lineage-15.1 2017-12-27 17:13:15 +03:00
pipe.c Merge remote-tracking branch 'stable/linux-3.4.y' into lineage-15.1 2017-12-27 17:13:15 +03:00
pnode.c Merge remote-tracking branch 'stable/linux-3.4.y' into lineage-15.1 2017-12-27 17:13:15 +03:00
pnode.h ANDROID: mnt: remount should propagate to slaves of slaves 2017-09-22 19:12:11 +03:00
posix_acl.c Merge remote-tracking branch 'stable/linux-3.4.y' into lineage-15.1 2017-12-27 17:13:15 +03:00
proc_namespace.c vfs: Allow filesystems to access their private mount data 2017-09-22 19:12:06 +03:00
read_write.c
read_write.h
readdir.c kernel: Only expose su when daemon is running 2017-05-19 18:41:25 -06:00
select.c Merge remote-tracking branch 'stable/linux-3.4.y' into lineage-15.1 2017-12-27 17:13:15 +03:00
seq_file.c
signalfd.c
splice.c Merge remote-tracking branch 'stable/linux-3.4.y' into lineage-15.1 2017-12-27 17:13:15 +03:00
stack.c
stat.c
statfs.c
super.c Merge remote-tracking branch 'stable/linux-3.4.y' into lineage-15.1 2017-12-27 17:13:15 +03:00
sync.c
timerfd.c timerfd: support CLOCK_BOOTTIME clock 2017-08-27 19:07:23 +03:00
utimes.c vfs: Add setattr2 for filesystems with per mount permissions 2017-09-22 19:12:07 +03:00
xattr.c
xattr_acl.c