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[PATCH] mm: quieten OOM killer noise

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We now print statistics when invoking the OOM killer, however this
information is not rate limited and you can get into situations where the
console is continually spammed.

For example, when a task is exiting the OOM killer will simply return
(waiting for that task to exit and clear up memory).  If the VM continually
calls back into the OOM killer we get thousands of copies of show_mem() on
the console.

Use printk_ratelimit() to quieten it.

Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Anton Blanchard 2005-07-07 17:56:06 -07:00 committed by Linus Torvalds
parent 37b173a4d0
commit 42639269f9
1 changed files with 5 additions and 3 deletions
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8
mm/oom_kill.c
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@ -258,9 +258,11 @@ void out_of_memory(unsigned int __nocast gfp_mask, int order)
struct mm_struct *mm = NULL;
task_t * p;
printk("oom-killer: gfp_mask=0x%x, order=%d\n", gfp_mask, order);
/* print memory stats */
show_mem();
if (printk_ratelimit()) {
printk("oom-killer: gfp_mask=0x%x, order=%d\n",
gfp_mask, order);
show_mem();
}
read_lock(&tasklist_lock);
retry: