linux-kernel - Re: [PATCH 25/33] x86, lmb: turn off ARCH_LMB_FIND

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Date:	Wed, 07 Apr 2010 16:40:25 -0700
From:	Yinghai <yinghai.lu@...cle.com>
To:	michael@...erman.id.au
CC:	Ingo Molnar <mingo@...e.hu>, Thomas Gleixner <tglx@...utronix.de>,
	"H. Peter Anvin" <hpa@...or.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	David Miller <davem@...emloft.net>,
	Benjamin Herrenschmidt <benh@...nel.crashing.org>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Johannes Weiner <hannes@...xchg.org>,
	linux-kernel@...r.kernel.org, linux-arch@...r.kernel.org
Subject: Re: [PATCH 25/33] x86, lmb: turn off ARCH_LMB_FIND_AREA

On 04/07/2010 04:38 PM, Michael Ellerman wrote:
> On Tue, 2010-03-30 at 19:17 -0700, Yinghai Lu wrote:
>> 32bit now can use generic __find_lmb_area now. So we can turn arch one off
>>
>> Signed-off-by: Yinghai Lu <yinghai@...nel.org>
>> ---
>>  arch/x86/Kconfig |    2 +-
>>  1 files changed, 1 insertions(+), 1 deletions(-)
>>
>> diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
>> index 1aa53ae..ce097ab 100644
>> --- a/arch/x86/Kconfig
>> +++ b/arch/x86/Kconfig
>> @@ -584,7 +584,7 @@ config PARAVIRT_DEBUG
>>  	  a paravirt_op is missing when it is called.
>>  
>>  config ARCH_LMB_FIND_AREA
>> -	default y
>> +	default n
>>  	bool "Use x86 own lmb_find_area()"
>>  	---help---
>>  	  Use lmb_find_area() version instead of generic version, it get free
> 
> So can't the whole ARCH_LMB_FIND_AREA go away then? And the generic
> version be made non-weak?

Later after more test, to make sure x86 could endure from high to low.
then we can remove ARCH_LMB_FIND_AREA.

YH
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