linux-kernel - Re: [PATCH 03/35] lmb: Add ARCH_DISCARD

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Message-ID: <4BED793C.3090403@oracle.com>
Date:	Fri, 14 May 2010 09:24:28 -0700
From:	Yinghai Lu <yinghai.lu@...cle.com>
To:	Benjamin Herrenschmidt <benh@...nel.crashing.org>
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>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Johannes Weiner <hannes@...xchg.org>,
	linux-kernel@...r.kernel.org, linux-arch@...r.kernel.org
Subject: Re: [PATCH 03/35] lmb: Add ARCH_DISCARD_LMB to put lmb code to .init

On 05/14/2010 01:10 AM, Benjamin Herrenschmidt wrote:
> On Thu, 2010-05-13 at 23:21 -0700, Yinghai wrote:
>   
>>> So you do not intend to use lmb after boot ? This will break the
>>>       
>> debugfs
>>     
>>> files unless you also remove those.
>>>       
>> no, x86 don't lmb after boot.
>>
>> yes 
>>     
> So you need some kind of CONFIG option to keep lmb after boot, at least
> the data structures, for debugfs, or when not set, disable the debugfs
> files.
>
>   
Just disable the debugfs for lmb if ARCH_DISCARD_LMB is defined in arch
lmb.h

Thanks

Yinghai Lu
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