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| author | Tejun Heo <tj@kernel.org> | 2018-06-07 17:05:35 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2018-06-07 17:34:34 -0700 |
| commit | f3a53a3a1e5b3b9bc114b5b7930fbe89d9ffed5d (patch) | |
| tree | cd8bc51d0629333b6b1a1c9da5fa23eb5a92e855 /include | |
| parent | bb98f2c5ac5db92d34908dbac81a8de7c47c8353 (diff) | |
| download | linux-0-day-f3a53a3a1e5b3b9bc114b5b7930fbe89d9ffed5d.tar.gz linux-0-day-f3a53a3a1e5b3b9bc114b5b7930fbe89d9ffed5d.tar.xz | |
mm, memcontrol: implement memory.swap.events
Add swap max and fail events so that userland can monitor and respond to
running out of swap.
I'm not too sure about the fail event. Right now, it's a bit confusing
which stats / events are recursive and which aren't and also which ones
reflect events which originate from a given cgroup and which targets the
cgroup. No idea what the right long term solution is and it could just
be that growing them organically is actually the only right thing to do.
Link: http://lkml.kernel.org/r/20180416231151.GI1911913@devbig577.frc2.facebook.com
Signed-off-by: Tejun Heo <tj@kernel.org>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: Vladimir Davydov <vdavydov.dev@gmail.com>
Cc: Roman Gushchin <guro@fb.com>
Cc: Rik van Riel <riel@surriel.com>
Cc: <linux-api@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/memcontrol.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/include/linux/memcontrol.h b/include/linux/memcontrol.h index d99b71bc2c667..517096c3cc994 100644 --- a/include/linux/memcontrol.h +++ b/include/linux/memcontrol.h @@ -53,6 +53,8 @@ enum memcg_memory_event { MEMCG_HIGH, MEMCG_MAX, MEMCG_OOM, + MEMCG_SWAP_MAX, + MEMCG_SWAP_FAIL, MEMCG_NR_MEMORY_EVENTS, }; @@ -208,6 +210,9 @@ struct mem_cgroup { atomic_long_t memory_events[MEMCG_NR_MEMORY_EVENTS]; struct cgroup_file events_file; + /* handle for "memory.swap.events" */ + struct cgroup_file swap_events_file; + /* protect arrays of thresholds */ struct mutex thresholds_lock; |