Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752901Ab0LVOLu (ORCPT ); Wed, 22 Dec 2010 09:11:50 -0500 Received: from casper.infradead.org ([85.118.1.10]:38341 "EHLO casper.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752205Ab0LVOLt convert rfc822-to-8bit (ORCPT ); Wed, 22 Dec 2010 09:11:49 -0500 Subject: Re: [PATCH] avoid race condition in pick_next_task_fair in kernel/sched_fair.c From: Peter Zijlstra To: Miklos Vajna Cc: Mike Galbraith , shenghui , kernel-janitors@vger.kernel.org, linux-kernel@vger.kernel.org, mingo@elte.hu, Greg KH In-Reply-To: <1293026422.2170.136.camel@laptop> References: <1277808215.1868.5.camel@laptop> <20101219020313.GJ31750@genesis.frugalware.org> <20101222002248.GP10557@genesis.frugalware.org> <1293006589.2170.41.camel@laptop> <1293007311.11370.172.camel@marge.simson.net> <1293008842.2170.70.camel@laptop> <20101222133154.GS10557@genesis.frugalware.org> <1293026422.2170.136.camel@laptop> Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 8BIT Date: Wed, 22 Dec 2010 15:11:52 +0100 Message-ID: <1293027112.2170.140.camel@laptop> Mime-Version: 1.0 X-Mailer: Evolution 2.30.3 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1371 Lines: 41 On Wed, 2010-12-22 at 15:00 +0100, Peter Zijlstra wrote: > On Wed, 2010-12-22 at 14:31 +0100, Miklos Vajna wrote: > > > > http://frugalware.org/~vmiklos/files/systemd.img > > > > Here is how I started it: > > > > qemu-kvm -vnc :0 -m 1G -hda systemd.img > > awesome, thanks! > > I started it with something like: > qemu -kernel foo-build/arch/x86/boot/bzImage -append "root=/dev/sda1 > debug sched_debug ignore_loglevel sysrq_always_enabled console=ttyS0" > -hda systemd.img -serial stdio -m 1G > > Where foo-build/ contains a kernel build using your .config. > > I'll have a poke at it.. Hrm,. its not really wanting to start properly.. --- EXT4-fs (sda1): mounted filesystem with ordered data mode. Opts: (null) VFS: Mounted root (ext4 filesystem) readonly on device 8:1. Freeing unused kernel memory: 520k freed EXT4-fs (sda1): re-mounted. Opts: (null) md: stopping all md devices. Restarting system. machine restart --- Does it _require_ initrd like muck? Or are there some modules that need to get built-in in order for the thing to boot? This is an utter lack of error reporting here, no idea what's wrong. -- 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/