diff options
| author | Michal Hocko <mhocko@suse.cz> | 2013-02-22 16:35:41 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2013-02-23 17:50:21 -0800 |
| commit | 1081312f95be1a0fc093556d789e482d3ab0f5b0 (patch) | |
| tree | 5d6ac1499b9f1724cb3f77a69c6bb23791158f01 /mm/memcontrol.c | |
| parent | e477749624fcf0dc95bfa494b7fa6ba2000fe670 (diff) | |
memcg: cleanup mem_cgroup_init comment
We should encourage all memcg controller initialization independent on a
specific mem_cgroup to be done here rather than exploit css_alloc
callback and assume that nothing happens before root cgroup is created.
Signed-off-by: Michal Hocko <mhocko@suse.cz>
Acked-by: Johannes Weiner <hannes@cmpxchg.org>
Cc: Tejun Heo <htejun@gmail.com>
Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/memcontrol.c')
| -rw-r--r-- | mm/memcontrol.c | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/mm/memcontrol.c b/mm/memcontrol.c index 604eddc5866..d4f0a831c9e 100644 --- a/mm/memcontrol.c +++ b/mm/memcontrol.c @@ -6830,10 +6830,12 @@ static void __init enable_swap_cgroup(void) #endif /* - * The rest of init is performed during ->css_alloc() for root css which - * happens before initcalls. hotcpu_notifier() can't be done together as - * it would introduce circular locking by adding cgroup_lock -> cpu hotplug - * dependency. Do it from a subsys_initcall(). + * subsys_initcall() for memory controller. + * + * Some parts like hotcpu_notifier() have to be initialized from this context + * because of lock dependencies (cgroup_lock -> cpu hotplug) but basically + * everything that doesn't depend on a specific mem_cgroup structure should + * be initialized from here. */ static int __init mem_cgroup_init(void) { |