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android_kernel_sony_sdm845/Documentation/filesystems
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Filename Latest commit message Latest commit date
Minchan Kim 8334b96221 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>
2015-09-08 15:35:28 -07:00
..
caching FS-Cache: Count the number of initialised operations 2015-04-02 14:28:53 +01:00
cifs update CIFS TODO list 2014-08-02 01:26:07 -05:00
configfs configfs: convert to umode_t 2012-01-03 22:54:57 -05:00
nfs Revert "Documentation: NFS/RDMA: Document separate Kconfig symbols" 2015-07-20 14:58:46 -04:00
pohmelfs Documentation: Fix multiple typo in Documentation 2012-03-07 16:08:24 +01:00
.gitignore Documentation: update .gitignore files 2014-09-26 11:02:59 +02:00
00-INDEX dax: replace XIP documentation with DAX documentation 2015-02-16 17:56:03 -08:00
9p.txt 9p: update documentation 2014-01-24 10:55:21 -06:00
adfs.txt adfs: add hexadecimal filetype suffix option 2011-03-22 17:44:17 -07:00
affs.txt affs: add mount option to avoid filename truncates 2014-04-07 16:36:08 -07:00
afs.txt AFS: Documentation updates 2009-08-19 10:40:13 -07:00
autofs4-mount-control.txt doc: fix double words 2014-03-21 13:16:58 +01:00
autofs4.txt autofs: the documentation I wanted to read 2014-10-14 02:18:17 +02:00
automount-support.txt Documentation: remove outdated information from automount-support.txt 2015-05-15 01:10:38 -04:00
befs.txt Documentation: befs.txt: no maintainer, orphaned 2011-08-13 18:34:03 -07:00
bfs.txt
btrfs.txt Documentation: filesystems: btrfs: Fixed typos and whitespace 2015-07-09 14:31:06 -06:00
ceph.txt ceph: enable/disable dentry complete flags via mount option 2012-01-12 11:00:40 -08:00
coda.txt
cramfs.txt
dax.txt dax: add huge page fault support 2015-09-08 15:35:28 -07:00
debugfs.txt Documentation: Update filesystems/debugfs.txt 2015-07-24 15:05:56 +02:00
devpts.txt Document usage of multiple-instances of devpts 2009-01-02 10:19:36 -08:00
directory-locking vfs: take i_mutex on renamed file 2013-11-09 00:16:40 -05:00
dlmfs.txt ocfs2: update web page + git tree in documentation 2015-02-28 09:57:50 -08:00
dnotify.txt
dnotify_test.c
ecryptfs.txt eCryptfs: Move ecryptfs docs into Documentation/filesystems/ 2007-07-17 10:23:08 -07:00
efivarfs.txt efivarfs: Add documentation for the EFI variable filesystem 2012-10-30 10:39:18 +00:00
exofs.txt exofs: Add option to mount by osdname 2011-03-15 15:02:51 +02:00
ext2.txt fs: Remove ext3 filesystem driver 2015-07-23 20:59:40 +02:00
ext3.txt fs: Remove ext3 filesystem driver 2015-07-23 20:59:40 +02:00
ext4.txt ext4: add DAX functionality 2015-02-16 17:56:04 -08:00
f2fs.txt f2fs: add noextent_cache mount option 2015-08-04 14:09:55 -07:00
fiemap.txt fsioctl.c: make generic_block_fiemap() signal-tolerant 2015-02-10 14:30:30 -08:00
files.txt Wrap accesses to the fd_sets in struct fdtable 2012-02-19 10:30:52 -08:00
fuse.txt Documentation/: it's -> its where appropriate 2010-04-23 02:09:52 +02:00
gfs2-glocks.txt GFS2: Update glock doc to add new stats info 2012-05-10 12:41:40 +01:00
gfs2-uevents.txt Documentation: Fix multiple typo in Documentation 2012-03-07 16:08:24 +01:00
gfs2.txt GFS2: Update main gfs2 doc 2012-05-10 11:45:31 +01:00
hfs.txt Documentation: HFS is orphaned 2011-11-04 12:01:48 -07:00
hfsplus.txt Documentation: update URL to hfsplus Technote 1150 2014-02-20 14:48:51 +01:00
hpfs.txt Documentation/: it's -> its where appropriate 2010-04-23 02:09:52 +02:00
inotify.txt inotify: update documentation to reflect code changes 2015-02-10 14:30:28 -08:00
isofs.txt
jfs.txt doc: fix misspellings with 'codespell' tool 2013-05-28 12:02:12 +02:00
Locking switch ->put_link() from dentry to inode 2015-05-11 08:13:12 -04:00
locks.txt doc: fix broken references 2011-09-27 18:08:04 +02:00
logfs.txt
Makefile Documentation: add makefiles for more targets 2014-09-26 11:02:56 +02:00
mandatory-locking.txt
ncpfs.txt
nilfs2.txt nilfs2: update project's web site in nilfs2.txt 2014-04-03 16:21:26 -07:00
ntfs.txt NTFS: Remove changelog from Documentation/filesystems/ntfs.txt. 2014-10-16 12:43:57 +01:00
ocfs2.txt ocfs2: update web page + git tree in documentation 2015-02-28 09:57:50 -08:00
omfs.txt omfs: add filesystem documentation 2008-07-26 12:00:05 -07:00
overlayfs.txt ovl: document lower layer ordering 2015-01-08 15:09:15 +01:00
path-lookup.txt Fix common misspellings 2011-03-31 11:26:23 -03:00
porting Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2015-07-04 19:36:06 -07:00
proc.txt mm: /proc/pid/smaps:: show proportional swap share of the mapping 2015-09-08 15:35:28 -07:00
qnx6.txt doc: filesystems : Fix typo in Documentations/filesystems 2013-08-20 13:45:56 +02:00
quota.txt quota: Update documentation 2015-05-18 11:23:07 +02:00
ramfs-rootfs-initramfs.txt initmpfs: use initramfs if rootfstype= or root= specified 2013-09-11 15:59:38 -07:00
relay.txt doc: Fix typo in doucmentations 2013-07-25 12:34:15 +02:00
romfs.txt Documentation/filesystems/romfs.txt: fixing link to genromfs 2011-02-17 22:04:46 +01:00
seq_file.txt Documentation: update seq_file 2014-12-29 15:40:18 -07:00
sharedsubtree.txt doc: spelling error changes 2014-05-05 15:32:05 +02:00
spufs.txt
squashfs.txt Squashfs: Add LZ4 compression configuration option 2014-11-27 18:48:44 +00:00
sysfs-pci.txt
sysfs-tagging.txt doc: Fix typo in doucmentations 2013-07-25 12:34:15 +02:00
sysfs.txt sysfs.txt: update show method notes about sprintf/snprintf/scnprintf usage 2015-08-05 15:13:21 -07:00
sysv-fs.txt [PATCH] fs/sysv/: doc cleanup 2006-12-07 08:39:44 -08:00
tmpfs.txt mempolicy: document cpuset interaction with tmpfs mpol mount option 2010-05-25 08:06:57 -07:00
ubifs.txt UBIFS: switch self-check knobs to debugfs 2011-07-04 10:54:28 +03:00
udf.txt
ufs.txt
vfat.txt fs/fat/: add support for DOS 1.x formatted volumes 2014-06-06 16:08:10 -07:00
vfs.txt fs: Remove ext3 filesystem driver 2015-07-23 20:59:40 +02:00
xfs-delayed-logging-design.txt Fix common misspellings 2011-03-31 11:26:23 -03:00
xfs-self-describing-metadata.txt xfs: add metadata CRC documentation 2013-04-27 13:27:43 -05:00
xfs.txt xfs: fix kernel version in docs 2015-06-01 07:15:38 +10:00