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| author | Jin Qian <jinqian@google.com> | 2017-01-10 16:10:35 -0800 |
|---|---|---|
| committer | Mister Oyster <oysterized@gmail.com> | 2017-05-23 12:17:53 +0200 |
| commit | b19f9c4661c76bb0f7abbb388bc3f645c992f5a5 (patch) | |
| tree | 60d9e6f0c9fdd461d7da28a26e1deb90246ed59c /arch | |
| parent | ae7c6711d39c400a393686b074cf02ad1251db86 (diff) | |
ANDROID: uid_cputime: add per-uid IO usage accounting
IO usages are accounted in foreground and background buckets.
For each uid, io usage is calculated in two steps.
delta = current total of all uid tasks - previus total
current bucket += delta
Bucket is determined by current uid stat. Userspace writes to
/proc/uid_procstat/set <uid> <stat> when uid stat is updated.
/proc/uid_io/stats shows IO usage in this format.
<uid> <foreground IO> <background IO>
Signed-off-by: Jin Qian <jinqian@google.com>
Bug: 34198239
Change-Id: I3369e59e063b1e5ee0dfe3804c711d93cb937c0c
Diffstat (limited to 'arch')
0 files changed, 0 insertions, 0 deletions