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

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Message-ID: <1421950431.2399.44.camel@schen9-desk2.jf.intel.com>
Date:	Thu, 22 Jan 2015 10:13:51 -0800
From:	Tim Chen <tim.c.chen@...ux.intel.com>
To:	Wanpeng Li <wanpeng.li@...ux.intel.com>
Cc:	Peter Zijlstra <peterz@...radead.org>,
	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
Subject: Re: [PATCH v6 5/7] sched/fair: fix idle balance when remaining
 tasks are all non-CFS tasks

On Thu, 2015-01-22 at 12:05 +0800, Wanpeng Li wrote:
> 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,
> 

Hard to respond without seeing your new patch.

Tim

> >
> >Regards,
> >Wanpeng Li 


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