From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from e35.co.us.ibm.com (e35.co.us.ibm.com [32.97.110.153]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client CN "e35.co.us.ibm.com", Issuer "Equifax" (verified OK)) by ozlabs.org (Postfix) with ESMTP id 85CD8DDDEF for ; Sat, 8 Dec 2007 15:22:14 +1100 (EST) Received: from d03relay04.boulder.ibm.com (d03relay04.boulder.ibm.com [9.17.195.106]) by e35.co.us.ibm.com (8.13.8/8.13.8) with ESMTP id lB84MAvf022196 for ; Fri, 7 Dec 2007 23:22:10 -0500 Received: from d03av02.boulder.ibm.com (d03av02.boulder.ibm.com [9.17.195.168]) by d03relay04.boulder.ibm.com (8.13.8/8.13.8/NCO v8.7) with ESMTP id lB84MAUM123112 for ; Fri, 7 Dec 2007 21:22:10 -0700 Received: from d03av02.boulder.ibm.com (loopback [127.0.0.1]) by d03av02.boulder.ibm.com (8.12.11.20060308/8.13.3) with ESMTP id lB84M9tf024590 for ; Fri, 7 Dec 2007 21:22:10 -0700 Message-ID: <475A1BEE.2050109@linux.vnet.ibm.com> Date: Sat, 08 Dec 2007 09:52:06 +0530 From: Balbir Singh MIME-Version: 1.0 To: David Rientjes Subject: Re: [PATCH] Fake NUMA emulation for PowerPC References: <20071207211425.10223.91240.sendpatchset@balbir-laptop> <20071207212817.GA391@lixom.net> <4759BCA2.1020809@linux.vnet.ibm.com> <975B5B2B-C1F3-4021-9AE2-8873FFE1BDEC@kernel.crashing.org> <4759C548.6030304@linux.vnet.ibm.com> In-Reply-To: Content-Type: text/plain; charset=ISO-8859-1 Cc: Olof Johansson , linuxppc-dev@ozlabs.org, LKML Reply-To: balbir@linux.vnet.ibm.com List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , David Rientjes wrote: > On Sat, 8 Dec 2007, Balbir Singh wrote: > >> To be able to test the memory controller under NUMA, I use fake NUMA >> nodes. x86-64 has a similar feature, the code I have here is the >> simplest I could come up with for PowerPC. >> > > Magnus Damm had patches from over a year ago that, I believe, made much of > the x86_64 fake NUMA code generic so that it could be extended for > architectures such as i386. Perhaps he could resurrect those patches if > there is wider interest in such a tool. That would be a very interesting patch, but what I have here is the simplest patch and we could build on it incrementally. The interface is non-standard but it does amazing things for 59 lines of code change. -- Warm Regards, Balbir Singh Linux Technology Center IBM, ISTL