Commit 8651c658 authored Sep 21, 2014 by Oleg Nesterov Committed by Ingo Molnar Sep 24, 2014

sched: Fix the task-group check in tg_has_rt_tasks()



tg_has_rt_tasks() wants to find an RT task in this task_group, but
task_rq(p)->rt.tg wrongly checks the root rt_rq.

Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Reviewed-by: Kirill Tkhai <ktkhai@parallels.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Mike Galbraith <umgwanakikbuti@gmail.com>
Link: http://lkml.kernel.org/r/20140921193336.GA28618@redhat.com


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

parent 83a0a96a

kernel/sched/core.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -7441,7 +7441,7 @@ static inline int tg_has_rt_tasks(struct task_group *tg)
		struct task_struct g, p;

		for_each_process_thread(g, p) {
		if (rt_task(p) && task_rq(p)->rt.tg == tg)
		if (rt_task(p) && task_group(p) == tg)
		return 1;
		}