Re: [PATCH] sched: Remove WAKEUP_PREEMPT feature check inentity_tick

From: Peter Zijlstra
Date: Fri Jul 29 2011 - 04:21:30 EST


On Fri, 2011-07-29 at 16:18 +0800, Yong Zhang wrote:
> > Nah, if there is 1 runnable task it will always run, preemption simply
> > doesn't matter. There's nothing to preempt it with.
>
> Hmmm, so the newly waked task could be scheduled a little later.
> That means schedule tick judge everything.

Oh, are you referring to the case where a task gets woken on an idle
remote cpu?
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