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Date: Sat, 7 Jul 2012 00:08:28 +0530
From: Vaidyanathan Srinivasan <svaidy@linux.vnet.ibm.com>
Subject: Re: [PATCH 13/40] autonuma: CPU follow memory algorithm
Message-ID: <20120706183828.GB7807@dirshya.in.ibm.com>
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To: Hillf Danton <dhillf@gmail.com>
Cc: Rik van Riel <riel@redhat.com>, Peter Zijlstra <peterz@infradead.org>, dlaor@redhat.com, Ingo Molnar <mingo@kernel.org>, Andrea Arcangeli <aarcange@redhat.com>, linux-kernel@vger.kernel.org, linux-mm@kvack.org, Dan Smith <danms@us.ibm.com>, 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>

* Hillf Danton <dhillf@gmail.com> [2012-07-06 21:04:56]:

> Hi Vaidy,
> 
> On Fri, Jul 6, 2012 at 12:56 AM, Vaidyanathan Srinivasan
> <svaidy@linux.vnet.ibm.com> wrote:
> > --- a/mm/autonuma.c
> > +++ b/mm/autonuma.c
> > @@ -26,7 +26,7 @@ unsigned long autonuma_flags __read_mostly =
> >  #ifdef CONFIG_AUTONUMA_DEFAULT_ENABLED
> >         (1<<AUTONUMA_FLAG)|
> >  #endif
> > -       (1<<AUTONUMA_SCAN_PMD_FLAG);
> > +       (0<<AUTONUMA_SCAN_PMD_FLAG);
> >
> 
> Let X86 scan pmd by default, agree?

Sure, yes.  This patch just lists the changes required to get the
framework running on powerpc so that we know the location of code
changes.

We will need an arch specific default flags and leave this ON for x86.

--Vaidy

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