linux-kernel - Re: [RFC][PATCH] sched: Avoid select_idle_sibling() for wake

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Message-ID: <20130926154419.GF3657@laptop.programming.kicks-ass.net>
Date:	Thu, 26 Sep 2013 17:44:19 +0200
From:	Peter Zijlstra <peterz@...radead.org>
To:	Michael wang <wangyun@...ux.vnet.ibm.com>
Cc:	Mike Galbraith <bitbucket@...ine.de>,
	Ingo Molnar <mingo@...nel.org>, Paul Turner <pjt@...gle.com>,
	Rik van Riel <riel@...hat.com>, linux-kernel@...r.kernel.org
Subject: Re: [RFC][PATCH] sched: Avoid select_idle_sibling() for
 wake_affine(.sync=true)

On Thu, Sep 26, 2013 at 11:09:46PM +0800, Michael wang wrote:
> > +	if (sync)
> > +		p->se.last_sync_wakeup = sched_clock_cpu(cpu);
> 
> Forgive me but I'm trying to understand it... why not 'current' but 'p'
> here? we want the get off speed of waker or the working time of wakee?

Because I'm an idiot? ;-)
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