linux-kernel - Re: [PATCH] sched: wakeup buddy

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Message-ID: <513DA076.80009@linux.vnet.ibm.com>
Date:	Mon, 11 Mar 2013 17:14:30 +0800
From:	Michael Wang <wangyun@...ux.vnet.ibm.com>
To:	Ingo Molnar <mingo@...nel.org>
CC:	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	LKML <linux-kernel@...r.kernel.org>,
	Mike Galbraith <efault@....de>,
	Namhyung Kim <namhyung@...nel.org>,
	Alex Shi <alex.shi@...el.com>, Paul Turner <pjt@...gle.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	"Nikunj A. Dadhania" <nikunj@...ux.vnet.ibm.com>,
	Ram Pai <linuxram@...ibm.com>
Subject: Re: [PATCH] sched: wakeup buddy

Hi, Ingo

On 03/11/2013 04:21 PM, Ingo Molnar wrote:
[snip]
> 
> I have actually written the prctl() approach before, for instrumentation 
> purposes, and it does wonders to system analysis.

The idea sounds great, we could get many new info to implement more
smart scheduler, that's amazing :)

> 
> Any objections?

Just one concern, may be I have misunderstand you, but will it cause
trouble if the prctl() was indiscriminately used by some applications,
will we get fake data?

Regards,
Michael Wang

> 
> Thanks,
> 
> 	Ingo
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