From mboxrd@z Thu Jan  1 00:00:00 1970
From: Yinghai Lu <yinghai.lu@oracle.com>
Subject: Re: [PATCH 03/35] lmb: Add ARCH_DISCARD_LMB to put lmb code to .init
Date: Fri, 14 May 2010 09:24:28 -0700
Message-ID: <4BED793C.3090403@oracle.com>
References: <1273796396-29649-1-git-send-email-yinghai@kernel.org>	 <1273796396-29649-4-git-send-email-yinghai@kernel.org>	 <1273803249.21352.357.camel@pasglop>  <4BECEBF4.7000402@oracle.com> <1273824623.21352.580.camel@pasglop>
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To: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Ingo Molnar <mingo@elte.hu>, Thomas Gleixner <tglx@linutronix.de>, "H. Peter Anvin" <hpa@zytor.com>, Andrew Morton <akpm@linux-foundation.org>, David Miller <davem@davemloft.net>, Linus Torvalds <torvalds@linux-foundation.org>, Johannes Weiner <hannes@cmpxchg.org>, linux-kernel@vger.kernel.org, linux-arch@vger.kernel.org

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