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Subject: Re: [RFC][PATCH 06/22] sched: SCHED_DEADLINE handles spacial
 kthreads
From: Peter Zijlstra <peterz@infradead.org>
To: Raistlin <raistlin@linux.it>
Cc: Ingo Molnar <mingo@elte.hu>, Thomas Gleixner <tglx@linutronix.de>,
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Date: Thu, 11 Nov 2010 15:34:56 +0100
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On Fri, 2010-10-29 at 08:31 +0200, Raistlin wrote:
> @@ -6071,7 +6104,7 @@ void sched_idle_next(void)
>          */
>         raw_spin_lock_irqsave(&rq->lock, flags);
>  
> -       __setscheduler(rq, p, SCHED_FIFO, MAX_RT_PRIO-1);
> +       __setscheduler_dl_special(rq, p);
>  
>         activate_task(rq, p, 0);
>   

Ingo, happen to know if this is really needed these days? hotplug should
have migrated all other tasks away, leaving only the idle task to run.