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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>
This commit is contained in:
Oleg Nesterov 2014-09-21 21:33:36 +02:00 committed by Ingo Molnar
parent 83a0a96a5f
commit 8651c65844
1 changed files with 1 additions and 1 deletions
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2
kernel/sched/core.c
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@ -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;
}