From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756893AbYBINUL (ORCPT ); Sat, 9 Feb 2008 08:20:11 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1754593AbYBINT6 (ORCPT ); Sat, 9 Feb 2008 08:19:58 -0500 Received: from web52008.mail.re2.yahoo.com ([206.190.48.57]:42226 "HELO web52008.mail.re2.yahoo.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with SMTP id S1754589AbYBINT5 (ORCPT ); Sat, 9 Feb 2008 08:19:57 -0500 DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=s1024; d=yahoo.com; h=X-YMail-OSG:Received:Date:From:Subject:To:Cc:In-Reply-To:MIME-Version:Content-Type:Content-Transfer-Encoding:Message-ID; b=5FkgYHciWbPIIuVKeWoOIfuPupQE42JUBy/lRN4pzL8qA5ery5asq2QfR6h7oa24MuCEgbIkn8FRfdoLlQ5zNVv/IZ8kGicdP2W+ZHzbl0bCyWTQ1MfTC70cNlRdK2yZhopMvs17XyGI/UJzbAF8eC4i3ZaadxZ/wuzVd6CZGzg=; X-YMail-OSG: _Kxq3HgVM1lUqUtz2h8oTALMNNK4cE571ckqlRzu64fG0ZFvRjoQB9jxfLHUKKeXbuXein8nRiecJJY6qrkzxRFlAKJJfMKDNK.PQ1FCIF1lH3OTHDfNopScr6KS_2Q9uSxUZqWMvvlnU6Q- Date: Sat, 9 Feb 2008 05:19:55 -0800 (PST) From: Doug Kehn Subject: Re: Soft lockup 2.6.23.14-uc0 To: Mikael Pettersson Cc: linux-kernel@vger.kernel.org, uClinux In-Reply-To: <18344.31682.388710.182172@harpo.it.uu.se> MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7BIT Message-ID: <65230.82874.qm@web52008.mail.re2.yahoo.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi Mikael/All, --- Mikael Pettersson wrote: > Anyway, I can think of two things: > > 1. There was some very recent patches by Peter > Zijlstra > addressing hrtimer breakage on arm and some other > archs in 2.6.24-git. If uclinux has backported > some > of that stuff then it might explain this issue. > > 2. There is a new native Linux driver for ixp4xx > ethernet. Patches for the 2.6.23.14 kernel can > be found in the nslu2-linux group's subversion > repository. (You'll need new firmware files > though.) > Replacing Intel's IXP400 drivers with this driver > should at least tell you if the lockups are > related to your use of the Intel drivers. > I'm working through Mikael's suggestions. A new piece of information is that the soft lockups only occur when the IXP420 is transmitting. I started using unidirectional streams; I don't observe soft lockups when receiving. I only observe them when transmitting. Thanks, ...doug ____________________________________________________________________________________ Never miss a thing. Make Yahoo your home page. http://www.yahoo.com/r/hs