cgroup core only recently grew generic notification support. Wire up "memory.events" so that it triggers a file modified event whenever its content changes.
Signed-off-by: Tejun Heo <[email protected]> Cc: Li Zefan <[email protected]> Cc: Johannes Weiner <[email protected]> Cc: Michal Hocko <[email protected]> --- mm/memcontrol.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/mm/memcontrol.c b/mm/memcontrol.c index 78ba418..10db5f1 100644 --- a/mm/memcontrol.c +++ b/mm/memcontrol.c @@ -295,6 +295,9 @@ 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; @@ -5499,6 +5502,7 @@ static struct cftype memory_files[] = { { .name = "events", .flags = CFTYPE_NOT_ON_ROOT, + .file_offset = offsetof(struct mem_cgroup, events_file), .seq_show = memory_events_show, }, { } /* terminate */ @@ -5530,6 +5534,7 @@ 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); } /** -- 2.4.3 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
