linux-kernel - Re: [PATCH 42/63] mm: numa: Change page last {nid,pid} into {cpu,pid}

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Message-ID: <525306C8.9000607@redhat.com>
Date:	Mon, 07 Oct 2013 15:08:56 -0400
From:	Rik van Riel <riel@...hat.com>
To:	Mel Gorman <mgorman@...e.de>
CC:	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Srikar Dronamraju <srikar@...ux.vnet.ibm.com>,
	Ingo Molnar <mingo@...nel.org>,
	Andrea Arcangeli <aarcange@...hat.com>,
	Johannes Weiner <hannes@...xchg.org>,
	Linux-MM <linux-mm@...ck.org>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 42/63] mm: numa: Change page last {nid,pid} into {cpu,pid}

On 10/07/2013 06:29 AM, Mel Gorman wrote:
> From: Peter Zijlstra <peterz@...radead.org>
> 
> Change the per page last fault tracking to use cpu,pid instead of
> nid,pid. This will allow us to try and lookup the alternate task more
> easily. Note that even though it is the cpu that is store in the page
> flags that the mpol_misplaced decision is still based on the node.
> 
> Signed-off-by: Peter Zijlstra <peterz@...radead.org>
> Signed-off-by: Mel Gorman <mgorman@...e.de>

Reviewed-by: Rik van Riel <riel@...hat.com>

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