From b4416d2bea007f07f2e74cdc4cb64042ec996c83 Mon Sep 17 00:00:00 2001 From: David Rientjes Date: Thu, 6 Nov 2008 12:53:29 -0800 Subject: [PATCH] oom: do not dump task state for non thread group leaders When /proc/sys/vm/oom_dump_tasks is enabled, it's only necessary to dump task state information for thread group leaders. The kernel log gets quickly overwhelmed on machines with a massive number of threads by dumping non-thread group leaders. Reviewed-by: Christoph Lameter Signed-off-by: David Rientjes Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- mm/oom_kill.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/mm/oom_kill.c b/mm/oom_kill.c index 64e5b4bcd964..2846a58e5de9 100644 --- a/mm/oom_kill.c +++ b/mm/oom_kill.c @@ -295,6 +295,8 @@ static void dump_tasks(const struct mem_cgroup *mem) continue; if (mem && !task_in_mem_cgroup(p, mem)) continue; + if (!thread_group_leader(p)) + continue; task_lock(p); printk(KERN_INFO "[%5d] %5d %5d %8lu %8lu %3d %3d %s\n",