diff options
| -rw-r--r-- | kernel/fork.c | 1 | ||||
| -rw-r--r-- | kernel/sched.c | 6 |
2 files changed, 4 insertions, 3 deletions
diff --git a/kernel/fork.c b/kernel/fork.c index c445f8cc408..a576b983652 100644 --- a/kernel/fork.c +++ b/kernel/fork.c @@ -272,6 +272,7 @@ static struct task_struct *dup_task_struct(struct task_struct *orig) setup_thread_stack(tsk, orig); clear_user_return_notifier(tsk); + clear_tsk_need_resched(tsk); stackend = end_of_stack(tsk); *stackend = STACK_END_MAGIC; /* for overflow detection */ diff --git a/kernel/sched.c b/kernel/sched.c index ac41c821746..92c5b60e357 100644 --- a/kernel/sched.c +++ b/kernel/sched.c @@ -566,7 +566,7 @@ void check_preempt_curr(struct rq *rq, struct task_struct *p, int flags) * A queue event has occurred, and we're going to schedule. In * this case, we can save a useless back to back clock update. */ - if (test_tsk_need_resched(p)) + if (rq->curr->se.on_rq && test_tsk_need_resched(rq->curr)) rq->skip_clock_update = 1; } @@ -3821,7 +3821,6 @@ static void put_prev_task(struct rq *rq, struct task_struct *prev) { if (prev->se.on_rq) update_rq_clock(rq); - rq->skip_clock_update = 0; prev->sched_class->put_prev_task(rq, prev); } @@ -3883,7 +3882,6 @@ need_resched_nonpreemptible: hrtick_clear(rq); raw_spin_lock_irq(&rq->lock); - clear_tsk_need_resched(prev); switch_count = &prev->nivcsw; if (prev->state && !(preempt_count() & PREEMPT_ACTIVE)) { @@ -3915,6 +3913,8 @@ need_resched_nonpreemptible: put_prev_task(rq, prev); next = pick_next_task(rq); + clear_tsk_need_resched(prev); + rq->skip_clock_update = 0; if (likely(prev != next)) { sched_info_switch(prev, next); |