diff options
| author | Vladimir Davydov <vdavydov@parallels.com> | 2015-02-13 01:59:56 +0300 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2015-02-13 05:54:10 +0300 |
| commit | f48b80a5e22200347e91f96b8b237b24b93c7192 (patch) | |
| tree | d28d2e0915a135cb2cecc3dd144e99d98327b37c /mm | |
| parent | 932ff6bbbdcadd85b309ef4fd59d4d8a77329b8b (diff) | |
| download | linux-f48b80a5e22200347e91f96b8b237b24b93c7192.tar.xz | |
memcg: cleanup static keys decrement
Move memcg_socket_limit_enabled decrement to tcp_destroy_cgroup (called
from memcg_destroy_kmem -> mem_cgroup_sockets_destroy) and zap a bunch of
wrapper functions.
Although this patch moves static keys decrement from __mem_cgroup_free to
mem_cgroup_css_free, it does not introduce any functional changes, because
the keys are incremented on setting the limit (tcp or kmem), which can
only happen after successful mem_cgroup_css_online.
Signed-off-by: Vladimir Davydov <vdavydov@parallels.com>
Cc: Glauber Costa <glommer@parallels.com>
Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujtisu.com>
Cc: Eric W. Biederman <ebiederm@xmission.com>
Cc: David S. Miller <davem@davemloft.net>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Acked-by: Michal Hocko <mhocko@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm')
| -rw-r--r-- | mm/memcontrol.c | 38 |
1 files changed, 5 insertions, 33 deletions
diff --git a/mm/memcontrol.c b/mm/memcontrol.c index 419c06b1794a..d18d3a6e7337 100644 --- a/mm/memcontrol.c +++ b/mm/memcontrol.c @@ -519,16 +519,6 @@ struct cg_proto *tcp_proto_cgroup(struct mem_cgroup *memcg) } EXPORT_SYMBOL(tcp_proto_cgroup); -static void disarm_sock_keys(struct mem_cgroup *memcg) -{ - if (!memcg_proto_activated(&memcg->tcp_mem)) - return; - static_key_slow_dec(&memcg_socket_limit_enabled); -} -#else -static void disarm_sock_keys(struct mem_cgroup *memcg) -{ -} #endif #ifdef CONFIG_MEMCG_KMEM @@ -583,28 +573,8 @@ void memcg_put_cache_ids(void) struct static_key memcg_kmem_enabled_key; EXPORT_SYMBOL(memcg_kmem_enabled_key); -static void disarm_kmem_keys(struct mem_cgroup *memcg) -{ - if (memcg->kmem_acct_activated) - static_key_slow_dec(&memcg_kmem_enabled_key); - /* - * This check can't live in kmem destruction function, - * since the charges will outlive the cgroup - */ - WARN_ON(page_counter_read(&memcg->kmem)); -} -#else -static void disarm_kmem_keys(struct mem_cgroup *memcg) -{ -} #endif /* CONFIG_MEMCG_KMEM */ -static void disarm_static_keys(struct mem_cgroup *memcg) -{ - disarm_sock_keys(memcg); - disarm_kmem_keys(memcg); -} - static struct mem_cgroup_per_zone * mem_cgroup_zone_zoneinfo(struct mem_cgroup *memcg, struct zone *zone) { @@ -4092,7 +4062,11 @@ static void memcg_deactivate_kmem(struct mem_cgroup *memcg) static void memcg_destroy_kmem(struct mem_cgroup *memcg) { - memcg_destroy_kmem_caches(memcg); + if (memcg->kmem_acct_activated) { + memcg_destroy_kmem_caches(memcg); + static_key_slow_dec(&memcg_kmem_enabled_key); + WARN_ON(page_counter_read(&memcg->kmem)); + } mem_cgroup_sockets_destroy(memcg); } #else @@ -4523,8 +4497,6 @@ static void __mem_cgroup_free(struct mem_cgroup *memcg) free_mem_cgroup_per_zone_info(memcg, node); free_percpu(memcg->stat); - - disarm_static_keys(memcg); kfree(memcg); } |