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

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Message-ID: <1273824623.21352.580.camel@pasglop>
Date:	Fri, 14 May 2010 18:10:23 +1000
From:	Benjamin Herrenschmidt <benh@...nel.crashing.org>
To:	Yinghai <yinghai.lu@...cle.com>
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 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.

Ben.


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