linux-kernel - Re: Re: [PATCH v6 2/3] sched/rt: Fix wrong SMP scheduler behavior for equal prio cases

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Message-ID: <20150424183255.GO23123@twins.programming.kicks-ass.net>
Date:	Fri, 24 Apr 2015 20:32:55 +0200
From:	Peter Zijlstra <peterz@...radead.org>
To:	pang.xunlei@....com.cn
Cc:	Steven Rostedt <rostedt@...dmis.org>,
	Juri Lelli <juri.lelli@...il.com>,
	linux-kernel@...r.kernel.org, Xunlei Pang <pang.xunlei@...aro.org>
Subject: Re: Re: [PATCH v6 2/3] sched/rt: Fix wrong SMP scheduler behavior
 for equal prio cases

On Thu, Apr 23, 2015 at 02:53:27PM +0800, pang.xunlei@....com.cn wrote:
> But for yield() or RR scheduling when running out of time slice, 
> I think this would be still inappropriate, am I missing something? 

Those two have explicit hooks you can use to do the right queueing with.

Look at yield_task_rt() and task_tick_rt() both end up doing
requeue_task_rt(), which is exactly what you want, no?

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