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sched: Switch wait_task_inactive to schedule_hrtimeout()
When we force thread hard and soft interrupts the startup of ksoftirqd would hang in kthread_bind() when wait_task_inactive() calls schedule_timeout_uninterruptible() because there is no softirq yet which will wake us up. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Peter Zijlstra <peterz@infradead.org> LKML-Reference: <20110223234956.677109139@linutronix.de>
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1 changed files with 4 additions and 1 deletions
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@ -2224,7 +2224,10 @@ unsigned long wait_task_inactive(struct task_struct *p, long match_state)
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* yield - it could be a while.
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*/
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if (unlikely(on_rq)) {
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schedule_timeout_uninterruptible(1);
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ktime_t to = ktime_set(0, NSEC_PER_SEC/HZ);
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set_current_state(TASK_UNINTERRUPTIBLE);
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schedule_hrtimeout(&to, HRTIMER_MODE_REL);
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continue;
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}
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