From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Fri, 14 Mar 2003 12:28:08 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Fri, 14 Mar 2003 12:28:07 -0500 Received: from mail-3.tiscali.it ([195.130.225.149]:42916 "EHLO mail.tiscali.it") by vger.kernel.org with ESMTP id ; Fri, 14 Mar 2003 12:28:06 -0500 Date: Fri, 14 Mar 2003 18:38:48 +0100 From: Andrea Arcangeli To: Marc-Christian Petersen Cc: linux-kernel@vger.kernel.org Subject: Re: 2.4.21pre5aa1 Message-ID: <20030314173848.GH1375@dualathlon.random> References: <20030314090825.GB1375@dualathlon.random> <200303141437.11589.m.c.p@wolk-project.de> <200303141810.54234.m.c.p@wolk-project.de> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <200303141810.54234.m.c.p@wolk-project.de> User-Agent: Mutt/1.4i X-GPG-Key: 1024D/68B9CB43 X-PGP-Key: 1024R/CB4660B9 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Fri, Mar 14, 2003 at 06:10:54PM +0100, Marc-Christian Petersen wrote: > On Friday 14 March 2003 14:39, Marc-Christian Petersen wrote: > > Hi Andrea, > > > > Only in 2.4.21pre5aa1: 22_sched-deadlock-mmdrop-1 > > > Backport from 2.5 (in a more icache friendy way) an anti-deadlock > > > fix for the o1 scheduler that can otherwise send a cross IPI with > > > irq disabled. > > > I get _tons_ of these messages: > > > > Initializing RT netlink socket > > rq->prev_mm was c025b0e0 set to c025b0e0 - swapper > > dffddf4c c0115786 c023b1a0 c025b0e0 c025b0e0 dffdc24e dffddfbc dffce02c > > dffdc000 00000000 dffdc000 dffddfbc c0105000 0008e000 c01072bd > > 00000700 c0125d00 c02916a8 dffddfbc c0105000 0008e000 00000002 c01e0018 > > .... > > I am going to rip out 22_sched-deadlock-mmdrop-1 because I dunno how to fix > this. The trace is annoying ;) the fix for this was supposed to be included in the o1 scheduler patch, there is been clearly a merging error, just drop the #ifdef CONFIG_SMP around schedule_tail in arch/i386/kernel/entry.S and it'll work fine. Andrea