aboutsummaryrefslogtreecommitdiff
path: root/mm/oom_kill.c
diff options
context:
space:
mode:
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
commitdc3f21eadeea6d9898271ff32d35d5e00c6872ea (patch)
treebe56e2d8b5bf7ce4a140d020b5e248dff6a06795 /mm/oom_kill.c
parent8447d950e7445cae71ad66d0e33784f8388aaf9d (diff)
downloadlinux-dc3f21eadeea6d9898271ff32d35d5e00c6872ea.tar.gz
mm, oom: introduce independent oom killer ratelimit state
printk_ratelimit() uses the global ratelimit state for all printks. The oom killer should not be subjected to this state just because another subsystem or driver may be flooding the kernel log. This patch introduces printk ratelimiting specifically for the oom killer. Signed-off-by: David Rientjes <rientjes@google.com> Acked-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Reviewed-by: 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/oom_kill.c')
-rw-r--r--mm/oom_kill.c5
1 files changed, 4 insertions, 1 deletions
diff --git a/mm/oom_kill.c b/mm/oom_kill.c
index 856106036ba..517299c808c 100644
--- a/mm/oom_kill.c
+++ b/mm/oom_kill.c
@@ -34,6 +34,7 @@
#include <linux/ptrace.h>
#include <linux/freezer.h>
#include <linux/ftrace.h>
+#include <linux/ratelimit.h>
#define CREATE_TRACE_POINTS
#include <trace/events/oom.h>
@@ -444,6 +445,8 @@ static void oom_kill_process(struct task_struct *p, gfp_t gfp_mask, int order,
struct task_struct *t = p;
struct mm_struct *mm;
unsigned int victim_points = 0;
+ static DEFINE_RATELIMIT_STATE(oom_rs, DEFAULT_RATELIMIT_INTERVAL,
+ DEFAULT_RATELIMIT_BURST);
/*
* If the task is already exiting, don't alarm the sysadmin or kill
@@ -454,7 +457,7 @@ static void oom_kill_process(struct task_struct *p, gfp_t gfp_mask, int order,
return;
}
- if (printk_ratelimit())
+ if (__ratelimit(&oom_rs))
dump_header(p, gfp_mask, order, memcg, nodemask);
task_lock(p);