From f4b90b70b7a4f5c29c442399ffd531332356e1f5 Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Wed, 24 Jun 2015 16:58:21 -0700 Subject: [PATCH] memcg: remove unused mem_cgroup->oom_wakeups Since commit 4942642080ea ("mm: memcg: handle non-error OOM situations more gracefully"), nobody uses mem_cgroup->oom_wakeups. Remove it. While at it, also fold memcg_wakeup_oom() into memcg_oom_recover() which is its only user. This cleanup was suggested by Michal. Signed-off-by: Tejun Heo Acked-by: Michal Hocko Cc: Johannes Weiner Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- mm/memcontrol.c | 10 +--------- 1 file changed, 1 insertion(+), 9 deletions(-) diff --git a/mm/memcontrol.c b/mm/memcontrol.c index 8da44a0..6a5f5d5 100644 --- a/mm/memcontrol.c +++ b/mm/memcontrol.c @@ -287,7 +287,6 @@ struct mem_cgroup { bool oom_lock; atomic_t under_oom; - atomic_t oom_wakeups; int swappiness; /* OOM-Killer disable */ @@ -1850,17 +1849,10 @@ static int memcg_oom_wake_function(wait_queue_t *wait, return autoremove_wake_function(wait, mode, sync, arg); } -static void memcg_wakeup_oom(struct mem_cgroup *memcg) -{ - atomic_inc(&memcg->oom_wakeups); - /* for filtering, pass "memcg" as argument. */ - __wake_up(&memcg_oom_waitq, TASK_NORMAL, 0, memcg); -} - static void memcg_oom_recover(struct mem_cgroup *memcg) { if (memcg && atomic_read(&memcg->under_oom)) - memcg_wakeup_oom(memcg); + __wake_up(&memcg_oom_waitq, TASK_NORMAL, 0, memcg); } static void mem_cgroup_oom(struct mem_cgroup *memcg, gfp_t mask, int order) -- 2.7.4