Re: [Query]: tick-sched: why don't we stop tick when we are running idle task?

From: Peter Zijlstra
Date: Tue Apr 15 2014 - 06:52:41 EST


On Tue, Apr 15, 2014 at 11:30:04AM +0200, Frederic Weisbecker wrote:
> There is probably a few things that assume local calls but last time
> I checked I had the impression that it was fairly possible to call sched_class::task_tick()
> remotely. rq is locked, no reference to "current", use rq accessors...
>
> OTOH scheduler_tick() itself definetly requires local calls.

possible isn't the problem, its completely insane to do that.
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