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Date: Wed, 31 Jul 2013 10:08:29 +0100
From: Mel Gorman <mgorman@suse.de>
Subject: Re: [PATCH 09/18] sched: Add infrastructure for split shared/private
 accounting of NUMA hinting faults
Message-ID: <20130731090829.GJ2296@suse.de>
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To: Hillf Danton <dhillf@gmail.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>, Srikar Dronamraju <srikar@linux.vnet.ibm.com>, Ingo Molnar <mingo@kernel.org>, Andrea Arcangeli <aarcange@redhat.com>, Johannes Weiner <hannes@cmpxchg.org>, Linux-MM <linux-mm@kvack.org>, LKML <linux-kernel@vger.kernel.org>

On Wed, Jul 17, 2013 at 10:17:29AM +0800, Hillf Danton wrote:
> On Mon, Jul 15, 2013 at 11:20 PM, Mel Gorman <mgorman@suse.de> wrote:
> >  /*
> >   * Got a PROT_NONE fault for a page on @node.
> >   */
> > -void task_numa_fault(int node, int pages, bool migrated)
> > +void task_numa_fault(int last_nid, int node, int pages, bool migrated)
> 
> For what is the new parameter?
> 

To weight the fault heavier if the page was migrated due to being
improperly placed at fault time.

-- 
Mel Gorman
SUSE Labs

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