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Commit b4416d2b authored by David Rientjes's avatar David Rientjes Committed by Linus Torvalds
Browse files

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: default avatarChristoph Lameter <cl@linux-foundation.org>
Signed-off-by: default avatarDavid Rientjes <rientjes@google.com>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent 953a6479

mm/oom_kill.c

+2 −0
Original line number Diff line number Diff line
@@ -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",