linux-kernel - Re: [PATCH v6 5/7] sched/fair: fix idle balance when remaining tasks are all non-CFS tasks

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Date:	Thu, 22 Jan 2015 12:05:32 +0800
From:	Wanpeng Li <wanpeng.li@...ux.intel.com>
To:	Peter Zijlstra <peterz@...radead.org>
Cc:	Wanpeng Li <wanpeng.li@...ux.intel.com>,
	Ingo Molnar <mingo@...hat.com>,
	Juri Lelli <juri.lelli@....com>,
	Kirill Tkhai <ktkhai@...allels.com>,
	linux-kernel@...r.kernel.org, riel@...hat.com, jason.low2@...com,
	fweisbec@...il.com, Tim Chen <tim.c.chen@...ux.intel.com>
Subject: Re: [PATCH v6 5/7] sched/fair: fix idle balance when remaining tasks
 are all non-CFS tasks

On Tue, Jan 20, 2015 at 07:18:37AM +0800, Wanpeng Li wrote:
>>>  		if (!rq->rd->overload)
>>>  			rq->rd->overload = true;
>>
>>Here 3882ec643997 ("nohz: Use IPI implicit full barrier against
>>rq->nr_running r/w") might be a clue.
>>
>>Also, this is wrong, it breaks NOHZ_FULL.
>
>Got it. If the modification in update_sg_lb_stats of my patch is still
>corrrect, if so I can send out a new version.

Ping,

>
>Regards,
>Wanpeng Li 
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