diff options
| author | Yafang Shao <[email protected]> | 2019-05-13 17:23:11 -0700 |
|---|---|---|
| committer | Linus Torvalds <[email protected]> | 2019-05-14 09:47:51 -0700 |
| commit | 19343b5bdd16ad4ae6b845ef829f68b683c4dfb5 (patch) | |
| tree | f6e36441b6b86ea3e4d499ebc35e3e7c9b6bd203 /tools/perf/scripts/python/exported-sql-viewer.py | |
| parent | 60b62ff7cc4217ac3de76535fa4c1510a798dbcb (diff) | |
mm/page-writeback: introduce tracepoint for wait_on_page_writeback()
Recently there have been some hung tasks on our server due to
wait_on_page_writeback(), and we want to know the details of this
PG_writeback, i.e. this page is writing back to which device. But it is
not so convenient to get the details.
I think it would be better to introduce a tracepoint for diagnosing the
writeback details.
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Yafang Shao <[email protected]>
Reviewed-by: Andrew Morton <[email protected]>
Cc: Jan Kara <[email protected]>
Cc: Michal Hocko <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
Diffstat (limited to 'tools/perf/scripts/python/exported-sql-viewer.py')
0 files changed, 0 insertions, 0 deletions