Commit cf0d1f54 authored Jul 16, 2014 by Srivatsa Vaddagiri Committed by Steve Muckle Jul 22, 2014

sched: Add BUG_ON when task_cpu() is incorrect



It would be fatal if task_cpu() information for a task does not
accurately represent the cpu on which its running. All sorts of wierd
issues can arise if that were to happen! Add a BUG_ON() in context
switch to detect such cases.

Change-Id: I4eb2c96c850e2247e22f773bbb6eedb8ccafa49c
Signed-off-by: Srivatsa Vaddagiri <vatsa@codeaurora.org>

parent cea49887

kernel/sched/core.c

+2 −0

Original line number	Diff line number	Diff line
		@@ -3889,6 +3889,8 @@ need_resched:
		clear_tsk_need_resched(prev);
		rq->skip_clock_update = 0;

		BUG_ON(task_cpu(next) != cpu_of(rq));

		if (likely(prev != next)) {
		rq->nr_switches++;
		rq->curr = next;