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Date: Thu, 11 Oct 2012 14:50:31 +0100
From: Mel Gorman <mel@csn.ul.ie>
Subject: Re: [PATCH 13/33] autonuma: autonuma_enter/exit
Message-ID: <20121011135031.GV3317@csn.ul.ie>
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To: Andrea Arcangeli <aarcange@redhat.com>
Cc: linux-kernel@vger.kernel.org, linux-mm@kvack.org, Linus Torvalds <torvalds@linux-foundation.org>, Andrew Morton <akpm@linux-foundation.org>, Peter Zijlstra <pzijlstr@redhat.com>, Ingo Molnar <mingo@elte.hu>, Hugh Dickins <hughd@google.com>, Rik van Riel <riel@redhat.com>, Johannes Weiner <hannes@cmpxchg.org>, Hillf Danton <dhillf@gmail.com>, Andrew Jones <drjones@redhat.com>, Dan Smith <danms@us.ibm.com>, Thomas Gleixner <tglx@linutronix.de>, Paul Turner <pjt@google.com>, Christoph Lameter <cl@linux.com>, Suresh Siddha <suresh.b.siddha@intel.com>, Mike Galbraith <efault@gmx.de>, "Paul E. McKenney" <paulmck@linux.vnet.ibm.com>, Lai Jiangshan <laijs@cn.fujitsu.com>, Bharata B Rao <bharata.rao@gmail.com>, Lee Schermerhorn <Lee.Schermerhorn@hp.com>, Srivatsa Vaddagiri <vatsa@linux.vnet.ibm.com>, Alex Shi <alex.shi@intel.com>, Mauricio Faria de Oliveira <mauricfo@linux.vnet.ibm.com>, Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>, Don Morris <don.morris@hp.com>, Benjamin Herrenschmidt <benh@kernel.crashing.org>

On Thu, Oct 04, 2012 at 01:50:55AM +0200, Andrea Arcangeli wrote:
> This is where we register (and unregister) an "mm" structure into
> AutoNUMA for knuma_scand to scan them.
> 
> knuma_scand is the first gear in the whole AutoNUMA algorithm.
> knuma_scand is the daemon that scans the "mm" structures in the list
> and sets pmd_numa and pte_numa to allow the NUMA hinting page faults
> to start. All other actions follow after that. If knuma_scand doesn't
> run, AutoNUMA is fully bypassed. If knuma_scand is stopped, soon all
> other AutoNUMA gears will settle down too.
> 
> Acked-by: Rik van Riel <riel@redhat.com>
> Signed-off-by: Andrea Arcangeli <aarcange@redhat.com>

I think there will be other cases in the future where autonuma_exit will
be used but not mandatory to deal with right now so

Acked-by: Mel Gorman <mgorman@suse.de>

-- 
Mel Gorman
SUSE Labs

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