linux-kernel - Re: [BUG] How to get real-time priority using idle priority

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Message-ID: <20090115131514.GF21839@elte.hu>
Date:	Thu, 15 Jan 2009 14:15:14 +0100
From:	Ingo Molnar <mingo@...e.hu>
To:	Peter Zijlstra <a.p.zijlstra@...llo.nl>
Cc:	Mike Galbraith <efault@....de>, Brian Rogers <brian@...w.org>,
	linux-kernel@...r.kernel.org
Subject: Re: [BUG] How to get real-time priority using idle priority


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

> On Thu, 2009-01-15 at 13:54 +0100, Ingo Molnar wrote:
> > --- a/kernel/sched_fair.c
> > +++ b/kernel/sched_fair.c
> > @@ -283,10 +283,7 @@ static void update_min_vruntime(struct cfs_rq *cfs_rq)
> >                                                    struct sched_entity,
> >                                                    run_node);
> >  
> > -               if (vruntime == cfs_rq->min_vruntime)
> > -                       vruntime = se->vruntime;
> > -               else
> > -                       vruntime = min_vruntime(vruntime, se->vruntime);
> > +               vruntime = min_vruntime(vruntime, se->vruntime);
> >         }
> >  
> >         cfs_rq->min_vruntime = max_vruntime(cfs_rq->min_vruntime, vruntime);
> 
> That's wrong

Please send a patch that makes it right, the twists and turns of patches 
in this thread is quite confusing so i probably picked up the 
last-but-good one. Thanks,

	Ingo
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