Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S965013Ab0BZPP5 (ORCPT ); Fri, 26 Feb 2010 10:15:57 -0500 Received: from exprod5og113.obsmtp.com ([64.18.0.26]:42047 "EHLO exprod5og113.obsmtp.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S964969Ab0BZPP4 (ORCPT ); Fri, 26 Feb 2010 10:15:56 -0500 Message-ID: <4B87E662.3080106@ge.com> Date: Fri, 26 Feb 2010 15:18:58 +0000 From: Martyn Welch User-Agent: Thunderbird 2.0.0.23 (X11/20090817) MIME-Version: 1.0 To: Paul Gortmaker CC: avorontsov@ru.mvista.com, linuxppc-dev list , netdev@vger.kernel.org, linux-kernel@vger.kernel.org, Sandeep Gopalpet , davem@davemloft.net Subject: Re: Gianfar driver failing on MPC8641D based board References: <4B6C2488.3060403@ge.com> <4B865176.7080806@ge.com> <4B86A97E.6050509@ge.com> <20100225165141.GA9686@oksana.dev.rtsoft.ru> <20100225174935.GA32370@oksana.dev.rtsoft.ru> <7d1d9c251002251653n6473f01ex2d43933ec6aa010b@mail.gmail.com> <20100226031452.GA11319@oksana.dev.rtsoft.ru> <4B87B937.6010204@ge.com> <20100226143532.GA31622@oksana.dev.rtsoft.ru> <4B87E01E.4070704@windriver.com> In-Reply-To: <4B87E01E.4070704@windriver.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1926 Lines: 56 Paul Gortmaker wrote: > On 10-02-26 09:35 AM, Anton Vorontsov wrote: > >> On Fri, Feb 26, 2010 at 12:06:15PM +0000, Martyn Welch wrote: >> >>> Anton Vorontsov wrote: >>> >>>> On Thu, Feb 25, 2010 at 07:53:30PM -0500, Paul Gortmaker wrote: >>>> [...] >>>> >>>> >>>>> I was able to reproduce it on an 8641D and bisected it down to this: >>>>> >>>>> ----------- >>>>> commit a3bc1f11e9b867a4f49505ecac486a33af248b2e >>>>> Author: Anton Vorontsov >>>>> Date: Tue Nov 10 14:11:10 2009 +0000 >>>>> >>>>> gianfar: Revive SKB recycling >>>>> >>>>> >>>> Thanks for the bisect. I have a guess why tx hangs in >>>> SMP case. Could anyone try the patch down below? >>>> >>>> >>> Yup, no problem. I'm afraid it doesn't resolve the problem for me. >>> >> Hm.. I found a p2020 board and I was able to reproduce the issue. >> The patch down below fixed it completely for me... hm. >> > > Interesting. I just tested the patch on the sbc8641d, and it > still has the issue with your patch applied. I'm using NFSroot > just like Martyn was and it still appears bound up on that > gianfar tx lock. I'll see if I can get a SysRq backtrace in > case that will help you see how it manages to get there... > I've got a p2020ds here as well, so I'll give NFSroot on that a try with your patch. Martyn -- Martyn Welch (Principal Software Engineer) | Registered in England and GE Intelligent Platforms | Wales (3828642) at 100 T +44(0)127322748 | Barbirolli Square, Manchester, E martyn.welch@ge.com | M2 3AB VAT:GB 927559189 -- 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/