From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932113AbXCHGDv (ORCPT ); Thu, 8 Mar 2007 01:03:51 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S932240AbXCHGDv (ORCPT ); Thu, 8 Mar 2007 01:03:51 -0500 Received: from smtp.osdl.org ([65.172.181.24]:50594 "EHLO smtp.osdl.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932113AbXCHGDu (ORCPT ); Thu, 8 Mar 2007 01:03:50 -0500 Date: Wed, 7 Mar 2007 22:03:33 -0800 From: Andrew Morton To: Con Kolivas Cc: linux-kernel@vger.kernel.org, ck@vds.kolivas.org Subject: Re: [PATCH] [RSDL-mm 0/6] RSDL cpu scheduler for -mm Message-Id: <20070307220333.1d6fff96.akpm@linux-foundation.org> In-Reply-To: <200703081625.06383.kernel@kolivas.org> References: <200703071226.43238.kernel@kolivas.org> <20070307185430.31fb48b8.akpm@linux-foundation.org> <20070307201502.4e93c5d5.akpm@linux-foundation.org> <200703081625.06383.kernel@kolivas.org> X-Mailer: Sylpheed version 2.2.4 (GTK+ 2.8.19; i686-pc-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org > On Thu, 8 Mar 2007 16:25:05 +1100 Con Kolivas wrote: > > It also boots OK on a very similar but somewhat older Nocona machine. > > Perhaps due to config changes: > > http://userweb.kernel.org/~akpm/ck/config-ok.txt > > Ok I just remembered that not only did I expect the cpu task to never be > scheduled and it _might_ be scheduled on sched_init, it is actually > _consciously_ scheduled on hotplug cpu which I have no way of handling at the > moment. On both your configs I noticed you had hotplug cpu enabled, but > perhaps it isn't really being used on the more conservative config. So this > is something I already know I need to handle. Did your ppc that had > the "bitmap error" have hotplug cpu enabled? It might be an unrelated > bug^Wphenomenon. The powerpc config has CONFIG_HOTPLUG_CPU=n