linux-kernel - Re: error at compaction (Re: mmotm 2010-04-15-14-42 uploaded

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Message-Id: <20100420113544.b06be095.kamezawa.hiroyu@jp.fujitsu.com>
Date:	Tue, 20 Apr 2010 11:35:44 +0900
From:	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>
To:	Mel Gorman <mel@....ul.ie>
Cc:	linux-kernel@...r.kernel.org, akpm@...ux-foundation.org,
	"linux-mm@...ck.org" <linux-mm@...ck.org>,
	"minchan.kim@...il.com" <minchan.kim@...il.com>,
	"kosaki.motohiro@...fujitsu.com" <kosaki.motohiro@...fujitsu.com>
Subject: Re: error at compaction  (Re: mmotm 2010-04-15-14-42 uploaded

On Mon, 19 Apr 2010 19:14:42 +0100
Mel Gorman <mel@....ul.ie> wrote:

> On Mon, Apr 19, 2010 at 07:01:33PM +0900, KAMEZAWA Hiroyuki wrote:

> I'll verify the theory tomorrow but it's a plausible explanation. On a
> different note, where did config options like the following come out of?
> 
> CONFIG_ARCH_HWEIGHT_CFLAGS="-fcall-saved-rdi -fcall-saved-rsi -fcall-saved-rdx -fcall-saved-rcx -fcall-saved-r8 -fcall-saved-r9 -fcall-saved-r10 -fcall-saved-r11" 
> 
> I don't think they are a factor but I'm curious.
> 

Hmm ? arch/x86/Kconfig.

config ARCH_HWEIGHT_CFLAGS
        string
        default "-fcall-saved-ecx -fcall-saved-edx" if X86_32
        default "-fcall-saved-rdi -fcall-saved-rsi -fcall-saved-rdx -fcall-saved-rcx -fcall-saved-r8 -fcall-saved-r9 -fcall-saved-r10 -fcall-saved-r11" if X86_64


Seems to be from
patches/x86-add-optimized-popcnt-variants.patch

Thanks,
-Kame

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