From: Oleg N. <ol...@re...> - 2009-03-23 16:00:34
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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. |