linux-kernel - Re: [PATCH 05/10] x86

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Message-ID: <477916ED.8010602@sgi.com>
Date:	Mon, 31 Dec 2007 08:21:01 -0800
From:	Mike Travis <travis@....com>
To:	Ingo Molnar <mingo@...e.hu>
CC:	Andi Kleen <ak@...e.de>, Andrew Morton <akpm@...ux-foundation.org>,
	Christoph Lameter <clameter@....com>, linux-mm@...ck.org,
	linux-kernel@...r.kernel.org,
	Rusty Russell <rusty@...tcorp.com.au>, tglx@...utronix.de,
	mingo@...hat.com, "H. Peter Anvin" <hpa@...or.com>
Subject: Re: [PATCH 05/10] x86_64: Use generic percpu

Ingo Molnar wrote:
> * Mike Travis <travis@....com> wrote:
> 
>>> Also for such changes .text size comparisons before/after are a good 
>>> idea.
>> x86_64-defconfig:
>>
>> pre-percpu                          post-percpu
>>       159373 .init.text                       +3 .init.text
>>      1411137 .rodata                          +8 .rodata
>>      3629056 .text                           +48 .text
>>      7057383 Total                           +59 Total
> 
> ok, that looks like really minimal impact, so i'm in favor of merging 
> this into arch/x86 - and the unification it does later on is nice too.
> 
> to get more test feedback: what would be the best way to get this tested 
> in x86.git in a standalone way? Can i just pick up these 10 patches and 
> remove all the non-x86 arch changes, and expect it to work - or are the 
> other percpu preparatory/cleanup patches in -mm needed too?
> 
> 	Ingo

I've tested some x86_64 configs but the UP model is currently broken so I
haven't been able to test that. (the "fs/nfs/super.c" build problem with
TASK_NORMAL and TASK_UNINTERRUPTIBLE undefined.)

Thanks,
Mike
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