Commit 35805ff8 authored Mar 06, 2014 by Kirill Tkhai Committed by Ingo Molnar Mar 11, 2014

sched/fair: Fix endless loop in idle_balance()



Check for fair tasks number to decide, that we've pulled a task.
rq's nr_running may contain throttled RT tasks.

Signed-off-by: Kirill Tkhai <ktkhai@parallels.com>
Signed-off-by: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/1394118975.19290.104.camel@tkhai


Signed-off-by: Ingo Molnar <mingo@kernel.org>

parent 4c6c4e38

kernel/sched/fair.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -6710,7 +6710,7 @@ static int idle_balance(struct rq *this_rq)
		* While browsing the domains, we released the rq lock.
		* A task could have be enqueued in the meantime
		*/
		if (this_rq->nr_running && !pulled_task) {
		if (this_rq->cfs.h_nr_running && !pulled_task) {
		pulled_task = 1;
		goto out;
		}