linux-kernel - Re: [PATCH for testing] Re: Decreasing stime running confuses top

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Date:	Fri, 5 Oct 2007 00:31:16 +0200
From:	Christian Borntraeger <borntraeger@...ibm.com>
To:	Chuck Ebbert <cebbert@...hat.com>
Cc:	Luca Tettamanti <kronos.it@...il.com>,
	Frans Pop <elendil@...net.nl>, Willy Tarreau <w@....eu>,
	LKML <linux-kernel@...r.kernel.org>,
	Ilpo Järvinen <ilpo.jarvinen@...sinki.fi>,
	"Alexander E. Patrakov" <patrakov@....usu.ru>,
	Ingo Molnar <mingo@...e.hu>
Subject: Re: [PATCH for testing] Re: Decreasing stime running confuses top

Am Freitag, 5. Oktober 2007 schrieb Chuck Ebbert:
> On 10/04/2007 05:10 PM, Christian Borntraeger wrote:
> 
> > <patch reverting to 2.6.22 behavior>
> 
> Alternative patch:
> 
> procfs: Don't read runtime twice when computing task's stime
> 
> Current code reads p->se.sum_exec_runtime twice and goes through
> multiple type conversions to calculate stime. Read it once and
> skip some of the conversions.
> 
> Signed-off-by: Chuck Ebbert <cebbert@...hat.com>

Looks better and makes the code nicer. s390 and power should work as well as 
CONFIG_VIRT_CPU_ACCOUNTING is unaffected. 

If Frans successfully tests this patch, feel free to add

Acked-by: Christian Borntraeger <borntraeger@...ibm.com>

Christian
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