linux-kernel - Re: [patch 1/2] x86: add numa=possible command line option

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Message-ID: <alpine.DEB.2.00.1011271802210.3764@chino.kir.corp.google.com>
Date:	Sat, 27 Nov 2010 18:03:58 -0800 (PST)
From:	David Rientjes <rientjes@...gle.com>
To:	Shaohui Zheng <shaohui.zheng@...el.com>
cc:	akpm@...ux-foundation.org, gregkh@...e.de, mingo@...hat.com,
	hpa@...or.com, tglx@...utronix.de, lethal@...ux-sh.org,
	ak@...ux.intel.com, yinghai@...nel.org, randy.dunlap@...cle.com,
	linux-kernel@...r.kernel.org, linux-mm@...ck.org, x86@...nel.org,
	haicheng.li@...el.com, haicheng.li@...ux.intel.com
Subject: Re: [patch 1/2] x86: add numa=possible command line option

On Mon, 22 Nov 2010, Shaohui Zheng wrote:

> It is the improved solution from thread http://lkml.org/lkml/2010/11/18/3,
> our draft patch set all the nodes as possbile node, it wastes a lot of memory,
> the command line numa=possible=<N> seems to be an acceptable, and it is a optimization
> for our patch.
> 

node_possible_map is a generic nodemask used throughout the kernel, but 
its handling is highly dependent on the arch.  This patch enables the 
support for x86, I'd encourage anyone else interested in other archs to 
look into adding the support for it as well (perhaps you can do it for 
powerpc?).

> I like your active work attitude for the patch reviewing, it is real helpful to 
> improve the patch quality.
> 

Thanks, I'm happy to be involved!
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