Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751178AbWAYT7p (ORCPT ); Wed, 25 Jan 2006 14:59:45 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751177AbWAYT7p (ORCPT ); Wed, 25 Jan 2006 14:59:45 -0500 Received: from ns1.siteground.net ([207.218.208.2]:62425 "EHLO serv01.siteground.net") by vger.kernel.org with ESMTP id S1751178AbWAYT7o (ORCPT ); Wed, 25 Jan 2006 14:59:44 -0500 Date: Wed, 25 Jan 2006 11:59:46 -0800 From: Ravikiran G Thirumalai To: Andi Kleen Cc: Eric Dumazet , pravin shelar , Shai Fultheim , linux-kernel@vger.kernel.org, "David S. Miller" Subject: Re: [PATCH] garbage values in file /proc/net/sockstat Message-ID: <20060125195946.GC3573@localhost.localdomain> References: <43D50445.1080208@cosmosbay.com> <43D50880.605@cosmosbay.com> <200601251431.16513.ak@suse.de> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <200601251431.16513.ak@suse.de> User-Agent: Mutt/1.4.2.1i X-AntiAbuse: This header was added to track abuse, please include it with any abuse report X-AntiAbuse: Primary Hostname - serv01.siteground.net X-AntiAbuse: Original Domain - vger.kernel.org X-AntiAbuse: Originator/Caller UID/GID - [0 0] / [47 12] X-AntiAbuse: Sender Address Domain - scalex86.org X-Source: X-Source-Args: X-Source-Dir: Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1063 Lines: 25 On Wed, Jan 25, 2006 at 02:31:15PM +0100, Andi Kleen wrote: > On Monday 23 January 2006 17:46, Eric Dumazet wrote: > > I think the best course of action for this now for 2.6.16 is: > > - mark percpu init data not __init > (this way it will still reference valid memory, although shared between > all impossible CPUs) > - keep the impossible CPUs per cpu data to point to the original reference > version (== offset 0) > How about doing the above using a debug config option? So that when the config option is turned on, all per-cpu area references to not possible cpus crash? and leave that option default on on -mm :). That way we can quickly catch all references. We can probably change the arch independent setup_per_cpu_areas also to do allocations for cpu_possible cpus only while we are at it? Kiran - 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/