diff options
| author | Srivatsa Vaddagiri <vatsa@codeaurora.org> | 2014-07-16 07:30:30 -0700 |
|---|---|---|
| committer | David Keitel <dkeitel@codeaurora.org> | 2016-03-23 19:59:53 -0700 |
| commit | 38e78bb4adbb2b67e4bb19e5dee2ea61c39e2abc (patch) | |
| tree | 7fa951c554cdc9b6ef724e7c74ac73cac711e90f | |
| parent | 961624dadc86491c45b87cce88d80d3465d6d764 (diff) | |
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>
| -rw-r--r-- | kernel/sched/core.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/kernel/sched/core.c b/kernel/sched/core.c index 65d61686ea84..41db511efbfd 100644 --- a/kernel/sched/core.c +++ b/kernel/sched/core.c @@ -4053,6 +4053,8 @@ static void __sched notrace __schedule(bool preempt) clear_preempt_need_resched(); rq->clock_skip_update = 0; + BUG_ON(task_cpu(next) != cpu_of(rq)); + if (likely(prev != next)) { rq->nr_switches++; rq->curr = next; |