linux-kernel - Re: [PATCH 10/10] sched: rt: dont stop the period timer when there are tasks wanting to run

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Date:	Fri, 20 Jun 2008 11:06:20 +0200
From:	Ingo Molnar <mingo@...e.hu>
To:	Peter Zijlstra <a.p.zijlstra@...llo.nl>
Cc:	"Daniel K." <dk@...no>, LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 10/10] sched: rt: dont stop the period timer when there
	are tasks wanting to run


* Peter Zijlstra <a.p.zijlstra@...llo.nl> wrote:

> On Thu, 2008-06-19 at 20:10 +0000, Daniel K. wrote:
> > Peter Zijlstra wrote:
> > > When a runnable group failed to get any runtime within a period it would be
> > > found idle and the period timer would be stopped.
> > > 
> > > So if the group ever gets throttled, it will never wake up again.
> > > 
> > > Signed-off-by: Peter Zijlstra <a.p.zijlstra@...llo.nl>
> > > Reported-by: "Daniel K." <dk@...no>
> > Tested-by: Daniel K. <dk@...no>
> > 
> > I think this should go into .26 as well, due to the non-intuitiveness
> > of the knobs that cause this if they are fiddled with in the wrong way.
> 
> Sounds reasonable, Ingo?

agreed - i've put it into tip/sched/urgent as well.

	Ingo
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