linux-kernel - Re: [RESEND PATCH 3/3 v5] sched: Remove task and group entity load

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Date:	Wed, 22 Oct 2014 12:31:02 +0200
From:	Peter Zijlstra <peterz@...radead.org>
To:	Yuyang Du <yuyang.du@...el.com>
Cc:	mingo@...hat.com, linux-kernel@...r.kernel.org, pjt@...gle.com,
	bsegall@...gle.com, arjan.van.de.ven@...el.com,
	len.brown@...el.com, rafael.j.wysocki@...el.com,
	alan.cox@...el.com, mark.gross@...el.com, fengguang.wu@...el.com
Subject: Re: [RESEND PATCH 3/3 v5] sched: Remove task and group entity
 load_avg when they are dead

On Fri, Oct 10, 2014 at 10:21:57AM +0800, Yuyang Du wrote:
> When task exits or group is destroyed, the entity's load_avg should be
> removed from its parent cfs_rq's load_avg. Otherwise, it will take time
> for the parent cfs_rq to decay the dead entity's load_avg to 0, which
> is not desired.

Right, this is something pjt wanted to do ever since we got that
callback in for dl. Nice.
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