From mboxrd@z Thu Jan  1 00:00:00 1970
From: Steve Capper <steve.capper-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>
Subject: Re: [RFC PATCH 4/4] arm64:numa: adding numa support for arm64
 platforms.
Date: Mon, 20 Oct 2014 15:30:46 +0100
Message-ID: <20141020143045.GA10233@linaro.org>
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To: Ganapatrao Kulkarni <gpkulkarni-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
Cc: Mark Rutland <mark.rutland-5wv7dgnIgG8@public.gmane.org>, Ganapatrao Kulkarni <ganapatrao.kulkarni-M3mlKVOIwJVv6pq1l3V1OdBPR1lH4CV8@public.gmane.org>, Catalin Marinas <Catalin.Marinas-5wv7dgnIgG8@public.gmane.org>, Will Deacon <Will.Deacon-5wv7dgnIgG8@public.gmane.org>, "grant.likely-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org" <grant.likely-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>, "robh+dt-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org" <robh+dt-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>, "devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org" <devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>, "linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org" <linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org>, Leif Lindholm <leif.lindholm-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>, Roy Franz <roy.franz-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>, Ard Biesheuvel <ard.biesheuvel-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>, msalter-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org
List-Id: devicetree@vger.kernel.org

On Mon, Oct 20, 2014 at 03:25:56PM +0100, Steve Capper wrote:
> On Fri, Oct 17, 2014 at 10:49:56PM +0530, Ganapatrao Kulkarni wrote:

[...]

>          /*Proximity Distance matrix for 4Node system
> >                        <from-node to-node distance>
> >         */
> >          node-matrix=    <0 0 10>,
> >                                <0 1 20>,
> >                                <0 2 30>,
> >                                <0 3 10>,
> >                                <1 0 20>,
> >                                 <1 1 10>,
> >                                <1 2 30>,
> >                               <1 3 10>,
> >                               <2 0 30>,
> >                               <2 1 20>,
> >                               <2 2 10>,
> >                              <2 3 10>,
> >                             <3 0 10>,
> >                             <3 1 20>,
> >                             <3 2 30>,
> >                             <3 3 10>,
> >  }
> 
> Hi Ganapat,
> The above caught my attention.
> 
> For a 4-node system do we not need 16 distances; the implication of that
> would be that the distance between node A-B could be different from the
> distance between B-A? Also the distance from a node to itself could be
> safely assumed to be zero?
> 
> I think we should have a symmetric matrix with zero-diagonals so strictly
> only seven values would need specifying for a 4-node system.

s/seven/six/

I really need to learn how to count.... :-/

> 
> Cheers,
> -- 
> Steve
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