path: root/mm/oom_kill.c
diff options
authorDavid Rientjes <rientjes@google.com>2012-03-21 16:33:47 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2012-03-21 17:54:55 -0700
commit8447d950e7445cae71ad66d0e33784f8388aaf9d (patch)
treeb7f7cfba3d2264b87ca168131e0a65d89faa51a8 /mm/oom_kill.c
parent647f2bdf4a00dbcaa8964286501d68e7d2e6da93 (diff)
mm, oom: do not emit oom killer warning if chosen thread is already exiting
If a thread is chosen for oom kill and is already PF_EXITING, then the oom killer simply sets TIF_MEMDIE and returns. This allows the thread to have access to memory reserves so that it may quickly exit. This logic is preceeded with a comment saying there's no need to alarm the sysadmin. This patch adds truth to that statement. There's no need to emit any warning about the oom condition if the thread is already exiting since it will not be killed. In this condition, just silently return the oom killer since its only giving access to memory reserves and is otherwise a no-op. Acked-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Acked-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Signed-off-by: David Rientjes <rientjes@google.com> 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/oom_kill.c')
1 files changed, 3 insertions, 3 deletions
diff --git a/mm/oom_kill.c b/mm/oom_kill.c
index d402b2c1040..856106036ba 100644
--- a/mm/oom_kill.c
+++ b/mm/oom_kill.c
@@ -445,9 +445,6 @@ static void oom_kill_process(struct task_struct *p, gfp_t gfp_mask, int order,
struct mm_struct *mm;
unsigned int victim_points = 0;
- if (printk_ratelimit())
- dump_header(p, gfp_mask, order, memcg, nodemask);
* If the task is already exiting, don't alarm the sysadmin or kill
* its children or threads, just set TIF_MEMDIE so it can die quickly
@@ -457,6 +454,9 @@ static void oom_kill_process(struct task_struct *p, gfp_t gfp_mask, int order,
+ if (printk_ratelimit())
+ dump_header(p, gfp_mask, order, memcg, nodemask);
pr_err("%s: Kill process %d (%s) score %d or sacrifice child\n",
message, task_pid_nr(p), p->comm, points);