From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932494AbYARSfk (ORCPT ); Fri, 18 Jan 2008 13:35:40 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1764825AbYARSdN (ORCPT ); Fri, 18 Jan 2008 13:33:13 -0500 Received: from ns2.suse.de ([195.135.220.15]:46005 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1764580AbYARSdK (ORCPT ); Fri, 18 Jan 2008 13:33:10 -0500 From: Andi Kleen Organization: SUSE Linux Products GmbH, Nuernberg, GF: Markus Rex, HRB 16746 (AG Nuernberg) To: travis@sgi.com Subject: Re: [PATCH 5/5] x86: Add debug of invalid per_cpu map accesses Date: Fri, 18 Jan 2008 19:33:05 +0100 User-Agent: KMail/1.9.6 Cc: Andrew Morton , mingo@elte.hu, Christoph Lameter , linux-mm@kvack.org, linux-kernel@vger.kernel.org References: <20080118183011.354965000@sgi.com> <20080118183012.050317000@sgi.com> In-Reply-To: <20080118183012.050317000@sgi.com> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-15" Content-Transfer-Encoding: 7bit Content-Disposition: inline Message-Id: <200801181933.05662.ak@suse.de> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Friday 18 January 2008 19:30:16 travis@sgi.com wrote: > Provide a means to trap usages of per_cpu map variables before > they are setup. Define CONFIG_DEBUG_PER_CPU_MAPS to activate. Are you sure that debug option is generally useful enough to merge? It seems very specific to your patchkit, but I'm not sure it would be worth carrying forever in the kernel. Better would be probably to just unmap those areas anyways. -Andi From mboxrd@z Thu Jan 1 00:00:00 1970 From: Andi Kleen Subject: Re: [PATCH 5/5] x86: Add debug of invalid per_cpu map accesses Date: Fri, 18 Jan 2008 19:33:05 +0100 References: <20080118183011.354965000@sgi.com> <20080118183012.050317000@sgi.com> In-Reply-To: <20080118183012.050317000@sgi.com> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-15" Content-Transfer-Encoding: 7bit Content-Disposition: inline Message-Id: <200801181933.05662.ak@suse.de> Sender: owner-linux-mm@kvack.org Return-Path: To: travis@sgi.com Cc: Andrew Morton , mingo@elte.hu, Christoph Lameter , linux-mm@kvack.org, linux-kernel@vger.kernel.org List-ID: On Friday 18 January 2008 19:30:16 travis@sgi.com wrote: > Provide a means to trap usages of per_cpu map variables before > they are setup. Define CONFIG_DEBUG_PER_CPU_MAPS to activate. Are you sure that debug option is generally useful enough to merge? It seems very specific to your patchkit, but I'm not sure it would be worth carrying forever in the kernel. Better would be probably to just unmap those areas anyways. -Andi -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org