Date: Fri, 10 Feb 2006 16:51:27 -0800
From: "Siddha, Suresh B" <suresh.b.siddha@intel.com>
To: Samuel Thibault <samuel.thibault@ens-lyon.org>,
       linux-kernel@vger.kernel.org
Subject: Re: [Patch] sched: new sched domain for representing multi-core
Message-ID: <20060210165127.A28881@unix-os.sc.intel.com>
References: <20060209095929.GZ4215@implementation.labri.fr>
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In-Reply-To: <20060209095929.GZ4215@implementation.labri.fr>; from samuel.thibault@ens-lyon.org on Thu, Feb 09, 2006 at 10:59:29AM +0100
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On Thu, Feb 09, 2006 at 10:59:29AM +0100, Samuel Thibault wrote:
> Hi,
> 
> Could cache-sharing multi-core chips be represented somehow in
> /proc/cpuinfo too? Such information can be useful in userspace too
> (without having to run cpuid & such). For instance:
> 
> physical id	: 0
> siblings	: 2
> l3 id		: 0
> l2 id		: 0
> core id		: 0
> cpu cores	: 2
> 
> etc.

/sys/devices/system/cpu/cpuX/cache/indexY/shared_cpu_map has this info
already

There is one more patch in works which enables exporting the multi-core
topology through sysfs

http://www.ussg.iu.edu/hypermail/linux/kernel/0601.3/0275.html

thanks,
suresh
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