Messages in this thread Patch in this message | | | Date | Wed, 30 Sep 2015 09:10:47 +0200 | From | Peter Zijlstra <> | Subject | [PATCH v2 12/12] sched: Add preempt_count invariant check |
| |
Ingo requested I keep my debug check for the preempt_count invariant.
Requested-by: Ingo Molnar <mingo@kernel.org> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> --- kernel/sched/core.c | 4 ++++ 1 file changed, 4 insertions(+)
--- a/kernel/sched/core.c +++ b/kernel/sched/core.c @@ -2514,6 +2514,10 @@ static struct rq *finish_task_switch(str * * Also, see FORK_PREEMPT_COUNT. */ + if (unlikely(WARN_ONCE(preempt_count() != 2*PREEMPT_DISABLE_OFFSET, + "corrupted preempt_count: %s/%d/0x%x\n", + current->comm, current->pid, preempt_count()))) + preempt_count_set(FORK_PREEMPT_COUNT); rq->prev_mm = NULL;
| |