linux-kernel - Re: [RFC patch 2/4] sched/tg: use 'unsigned long' for load variable in task group

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Message-ID: <CAPM31R+Rmmn471ZE97q3DhAgZiu3s2fEoqf7unO6sB6=H8w37A@mail.gmail.com>
Date:	Mon, 17 Jun 2013 05:25:19 -0700
From:	Paul Turner <pjt@...gle.com>
To:	Alex Shi <alex.shi@...el.com>
Cc:	Ingo Molnar <mingo@...hat.com>,
	Peter Zijlstra <peterz@...radead.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Borislav Petkov <bp@...en8.de>,
	Namhyung Kim <namhyung@...nel.org>,
	Mike Galbraith <efault@....de>,
	Morten Rasmussen <morten.rasmussen@....com>,
	Vincent Guittot <vincent.guittot@...aro.org>,
	Preeti U Murthy <preeti@...ux.vnet.ibm.com>,
	Viresh Kumar <viresh.kumar@...aro.org>,
	LKML <linux-kernel@...r.kernel.org>,
	Mel Gorman <mgorman@...e.de>, Rik van Riel <riel@...hat.com>,
	Michael Wang <wangyun@...ux.vnet.ibm.com>,
	Jason Low <jason.low2@...com>
Subject: Re: [RFC patch 2/4] sched/tg: use 'unsigned long' for load variable
 in task group

On Fri, Jun 7, 2013 at 12:29 AM, Alex Shi <alex.shi@...el.com> wrote:
> Since tg->load_avg is smaller than tg->load_weight, we don't need a
> atomic64_t variable for load_avg in 32 bit machine.
> The same reason for cfs_rq->tg_load_contrib.

This description is incorrect, another patch removes tg->load_weight
for being unused.

Rest seems fine.
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