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authorDavid Rientjes <rientjes@google.com>2012-07-31 16:43:48 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2012-07-31 18:42:45 -0700
commit876aafbfd9ba5bb352f1b14622c27f3fe9a99013 (patch)
treefdd18b6caa0c9baa56b76feb9b05339919f283dd /mm/oom_kill.c
parent6b0c81b3be114a93f79bd4c5639ade5107d77c21 (diff)
downloadlinux-876aafbfd9ba5bb352f1b14622c27f3fe9a99013.tar.gz
mm, memcg: move all oom handling to memcontrol.c
By globally defining check_panic_on_oom(), the memcg oom handler can be moved entirely to mm/memcontrol.c. This removes the ugly #ifdef in the oom killer and cleans up the code. Signed-off-by: David Rientjes <rientjes@google.com> Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Acked-by: Michal Hocko <mhocko@suse.cz> Cc: Oleg Nesterov <oleg@redhat.com> Cc: KOSAKI Motohiro <kosaki.motohiro@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/oom_kill.c')
-rw-r--r--mm/oom_kill.c23
1 files changed, 2 insertions, 21 deletions
diff --git a/mm/oom_kill.c b/mm/oom_kill.c
index a3a32ae02e9..19860086163 100644
--- a/mm/oom_kill.c
+++ b/mm/oom_kill.c
@@ -556,8 +556,8 @@ void oom_kill_process(struct task_struct *p, gfp_t gfp_mask, int order,
/*
* Determines whether the kernel must panic because of the panic_on_oom sysctl.
*/
-static void check_panic_on_oom(enum oom_constraint constraint, gfp_t gfp_mask,
- int order, const nodemask_t *nodemask)
+void check_panic_on_oom(enum oom_constraint constraint, gfp_t gfp_mask,
+ int order, const nodemask_t *nodemask)
{
if (likely(!sysctl_panic_on_oom))
return;
@@ -575,25 +575,6 @@ static void check_panic_on_oom(enum oom_constraint constraint, gfp_t gfp_mask,
sysctl_panic_on_oom == 2 ? "compulsory" : "system-wide");
}
-#ifdef CONFIG_MEMCG
-void mem_cgroup_out_of_memory(struct mem_cgroup *memcg, gfp_t gfp_mask,
- int order)
-{
- /*
- * If current has a pending SIGKILL, then automatically select it. The
- * goal is to allow it to allocate so that it may quickly exit and free
- * its memory.
- */
- if (fatal_signal_pending(current)) {
- set_thread_flag(TIF_MEMDIE);
- return;
- }
-
- check_panic_on_oom(CONSTRAINT_MEMCG, gfp_mask, order, NULL);
- __mem_cgroup_out_of_memory(memcg, gfp_mask, order);
-}
-#endif
-
static BLOCKING_NOTIFIER_HEAD(oom_notify_list);
int register_oom_notifier(struct notifier_block *nb)