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

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Message-Id: <1232024701.8870.47.camel@laptop>
Date:	Thu, 15 Jan 2009 14:05:01 +0100
From:	Peter Zijlstra <a.p.zijlstra@...llo.nl>
To:	Ingo Molnar <mingo@...e.hu>
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

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

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