From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from fg-out-1718.google.com (fg-out-1718.google.com [72.14.220.156]) by ozlabs.org (Postfix) with ESMTP id 704C5DDDEB for ; Mon, 28 Jan 2008 19:16:11 +1100 (EST) Received: by fg-out-1718.google.com with SMTP id 16so1433296fgg.39 for ; Mon, 28 Jan 2008 00:16:10 -0800 (PST) Subject: Re: ppc32: Weird process scheduling behaviour with 2.6.24-rc From: Michel =?ISO-8859-1?Q?D=E4nzer?= To: benh@kernel.crashing.org In-Reply-To: <1201494324.6815.171.camel@pasglop> References: <1200659696.23161.81.camel@thor.sulgenrain.local> <1201013786.4726.28.camel@thor.sulgenrain.local> <1201090699.9052.39.camel@thor.sulgenrain.local> <1201092131.6341.51.camel@lappy> <1201244082.6815.128.camel@pasglop> <1201244618.6815.130.camel@pasglop> <1201245901.6815.133.camel@pasglop> <1201251000.6341.108.camel@lappy> <20080126040734.GA21365@linux.vnet.ibm.com> <1201320834.6815.160.camel@pasglop> <20080126050757.GB14177@linux.vnet.ibm.com> <1201450409.1931.23.camel@thor.sulgenrain.local> <1201494324.6815.171.camel@pasglop> Content-Type: text/plain; charset=UTF-8 Date: Mon, 28 Jan 2008 09:16:06 +0100 Message-Id: <1201508166.5923.30.camel@thor.sulgenrain.local> Mime-Version: 1.0 Cc: linuxppc-dev@ozlabs.org, Ingo Molnar , vatsa@linux.vnet.ibm.com, Peter Zijlstra List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , On Mon, 2008-01-28 at 15:25 +1100, Benjamin Herrenschmidt wrote: > On Sun, 2008-01-27 at 17:13 +0100, Michel Dänzer wrote: > > > > > Do you see behavior change (from good->bad) immediately after > > applying that patch > > > during your bisect process? > > > > Yes, confirmed by trying that commit and its parent again. > > Just to be paranoid... can you try with a different gcc version in case > something gets miscompiled ? Is that really necessary - after all, 810e95ccd58d91369191aa4ecc9e6d4a10d8d0c8 is related to process wakeup behaviour? -- Earthling Michel Dänzer | http://tungstengraphics.com Libre software enthusiast | Debian, X and DRI developer