From 472912a2b5e2027efd58aa47f78acb2373675187 Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Fri, 18 Sep 2015 18:01:59 -0400 Subject: memcg: generate file modified notifications on "memory.events" cgroup core only recently grew generic notification support. Wire up "memory.events" so that it triggers a file modified event whenever its content changes. v2: Refreshed on top of mem_cgroup relocation. Signed-off-by: Tejun Heo Acked-by: Michal Hocko Acked-by: Johannes Weiner Cc: Li Zefan --- include/linux/memcontrol.h | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'include/linux/memcontrol.h') diff --git a/include/linux/memcontrol.h b/include/linux/memcontrol.h index 9aa7820..c83c699 100644 --- a/include/linux/memcontrol.h +++ b/include/linux/memcontrol.h @@ -213,6 +213,9 @@ struct mem_cgroup { /* OOM-Killer disable */ int oom_kill_disable; + /* handle for "memory.events" */ + struct cgroup_file events_file; + /* protect arrays of thresholds */ struct mutex thresholds_lock; @@ -286,6 +289,7 @@ static inline void mem_cgroup_events(struct mem_cgroup *memcg, unsigned int nr) { this_cpu_add(memcg->stat->events[idx], nr); + cgroup_file_notify(&memcg->events_file); } bool mem_cgroup_low(struct mem_cgroup *root, struct mem_cgroup *memcg); -- cgit v1.1