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Date: Fri, 29 Jun 2012 14:37:49 -0400
From: Rik van Riel <riel@redhat.com>
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Subject: Re: [PATCH 17/40] autonuma: autonuma_enter/exit
References: <1340888180-15355-1-git-send-email-aarcange@redhat.com> <1340888180-15355-18-git-send-email-aarcange@redhat.com>
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To: Andrea Arcangeli <aarcange@redhat.com>
Cc: linux-kernel@vger.kernel.org, linux-mm@kvack.org, Hillf Danton <dhillf@gmail.com>, Dan Smith <danms@us.ibm.com>, Peter Zijlstra <a.p.zijlstra@chello.nl>, Linus Torvalds <torvalds@linux-foundation.org>, Andrew Morton <akpm@linux-foundation.org>, Thomas Gleixner <tglx@linutronix.de>, Ingo Molnar <mingo@elte.hu>, Paul Turner <pjt@google.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>, Johannes Weiner <hannes@cmpxchg.org>, Srivatsa Vaddagiri <vatsa@linux.vnet.ibm.com>, Christoph Lameter <cl@linux.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 06/28/2012 08:55 AM, Andrea Arcangeli wrote:
> The first gear in the whole AutoNUMA algorithm is knuma_scand. If
> knuma_scand doesn't run AutoNUMA is a full bypass. If knuma_scand is
> stopped, soon all other AutoNUMA gears will settle down too.
>
> knuma_scand is the daemon that sets the pmd_numa and pte_numa and
> allows the NUMA hinting page faults to start and then all other
> actions follows as a reaction to that.
>
> knuma_scand scans a list of "mm" and this is where we register and
> unregister the "mm" into AutoNUMA for knuma_scand to scan them.
>
> Signed-off-by: Andrea Arcangeli<aarcange@redhat.com>

Acked-by: Rik van Riel <riel@redhat.com>

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