On 03/23, Ingo Molnar wrote:
>
> There's an alternative patch
> below. Would you mind to give it a test? Chances are that it will
> make UML even faster than your fix.
>
> Ingo
>
> diff --git a/kernel/sched.c b/kernel/sched.c
> index 3e827b8..2d60f23 100644
> --- a/kernel/sched.c
> +++ b/kernel/sched.c
> @@ -2119,7 +2119,8 @@ unsigned long wait_task_inactive(struct task_struct *p,
> long match_state)
> * yield - it could be a while.
> */
> if (unlikely(on_rq)) {
> - schedule_timeout_uninterruptible(1);
> + cpu_relax();
> + cond_resched();
What if the caller is a realtime task? We can spin "forever", no?
Oleg.
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