linux-kernel - Re: Linux 2.6.23-rc9 and a heads-up for the 2.6.24 series..

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Message-ID: <4702C1AD.3090701@tmr.com>
Date:	Tue, 02 Oct 2007 18:09:49 -0400
From:	Bill Davidsen <davidsen@....com>
To:	Mel Gorman <mel@...net.ie>
CC:	Ingo Molnar <mingo@...e.hu>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	akpm@...ux-foundation.org
Subject: Re: Linux 2.6.23-rc9 and a heads-up for the 2.6.24 series..

Mel Gorman wrote:
> On (02/10/07 14:15), Ingo Molnar didst pronounce:
>> * Mel Gorman <mel@....ul.ie> wrote:
>>
>>> Dirt. Booting with "profile=sleep,2" is broken in 2.6.23-rc9 and 
>>> 2.6.23-rc8 but working in 2.6.22. I was checking it out as part of a 
>>> discussion in another thread and noticed it broken in -mm as well 
>>> (2.6.23-rc8-mm2). Bisect is in progress but suggestions as to the 
>>> prime candidates are welcome or preferably, pointing out that I'm an 
>>> idiot because I missed twiddling some config change.
>> Mel, does the patch below fix this bug for you? (Note: you will need to 
>> enable CONFIG_SCHEDSTATS=y too.)
>>
> 
> Nice one Ingo - got it first try. The problem commit was
> dd41f596cda0d7d6e4a8b139ffdfabcefdd46528 and it's clear that the code removed
> in this commit is put back by this latest patch.  When applied, profile=sleep
> works as long as CONFIG_SCHEDSTAT is set.
> 
And if it isn't set? I can easily see building a new kernel with stats 
off and forgetting to change the boot options.

-- 
Bill Davidsen <davidsen@....com>
   "We have more to fear from the bungling of the incompetent than from
the machinations of the wicked."  - from Slashdot
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