Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S262371AbVEMN7I (ORCPT ); Fri, 13 May 2005 09:59:08 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S262377AbVEMN7I (ORCPT ); Fri, 13 May 2005 09:59:08 -0400 Received: from e34.co.us.ibm.com ([32.97.110.132]:43970 "EHLO e34.co.us.ibm.com") by vger.kernel.org with ESMTP id S262371AbVEMN5G (ORCPT ); Fri, 13 May 2005 09:57:06 -0400 Subject: Re: NUMA aware slab allocator V2 From: Dave Hansen To: Christoph Lameter Cc: Andrew Morton , linux-mm , Linux Kernel Mailing List , shai@scalex86.org, steiner@sgi.com, Andy Whitcroft In-Reply-To: References: <20050512000444.641f44a9.akpm@osdl.org> <20050513000648.7d341710.akpm@osdl.org> <20050513043311.7961e694.akpm@osdl.org> Content-Type: text/plain Date: Fri, 13 May 2005 06:56:53 -0700 Message-Id: <1115992613.7129.10.camel@localhost> Mime-Version: 1.0 X-Mailer: Evolution 2.0.4 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1461 Lines: 47 On Fri, 2005-05-13 at 04:37 -0700, Christoph Lameter wrote: > On Fri, 13 May 2005, Andrew Morton wrote: > > > The definition for the number of NUMA nodes is dependent on > > > CONFIG_FLATMEM instead of CONFIG_NUMA in mm. > > > CONFIG_FLATMEM is not set on ppc64 because CONFIG_DISCONTIG is set! And > > > consequently nodes exist in a non NUMA config. > > > > I was testing 2.6.12-rc4 base. > > There we still have the notion of nodes depending on CONFIG_DISCONTIG and > not on CONFIG_NUMA. The node stuff needs to be > > #ifdef CONFIG_FLATMEM > > or > > #ifdef CONFIG_DISCONTIG I think I found the problem. Could you try the attached patch? As I said before FLATMEM is really referring to things like the mem_map[] or max_mapnr. CONFIG_NEED_MULTIPLE_NODES is what gets turned on for DISCONTIG or for NUMA. We'll slowly be removing all of the DISCONTIG cases, so eventually it will merge back to be one with NUMA. -- Dave --- clean/include/linux/numa.h.orig 2005-05-13 06:44:56.000000000 -0700 +++ clean/include/linux/numa.h 2005-05-13 06:52:05.000000000 -0700 @@ -3,7 +3,7 @@ #include -#ifndef CONFIG_FLATMEM +#ifdef CONFIG_NEED_MULTIPLE_NODES #include #endif - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/