Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754902AbXICJ4d (ORCPT ); Mon, 3 Sep 2007 05:56:33 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751035AbXICJ40 (ORCPT ); Mon, 3 Sep 2007 05:56:26 -0400 Received: from atrey.karlin.mff.cuni.cz ([195.113.31.123]:46162 "EHLO atrey.karlin.mff.cuni.cz" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750704AbXICJ4Z (ORCPT ); Mon, 3 Sep 2007 05:56:25 -0400 Date: Mon, 3 Sep 2007 03:47:20 +0000 From: Pavel Machek To: Jeff Chua Cc: rusty@rustycorp.com.au, vatsa@in.ibm.com, zwane@arm.linux.org.uk, kernel list , "Rafael J. Wysocki" Subject: Re: cpu hotplug support broken in 2.6.23-rc3 Message-ID: <20070903034720.GB3655@ucw.cz> References: <20070827104350.GA2073@elf.ucw.cz> <20070827105801.GA4053@elf.ucw.cz> <20070827213248.GF3398@elf.ucw.cz> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.13 (2006-08-11) Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1293 Lines: 36 Hi! > > Can you try 20-or-so tests? Mine hangs randomly, so it survived 4 or > > so cycles at one point. > > Mine still survives with this ... with sleep 1 ... > > # for((i=0; i<100; i++)); do echo $i; echo $((i % 2)) > >/sys/devices/system/cpu/cpu1/online; sleep 1; done > > and this as well ... without sleep ... > > # for((i=0; i<100; i++)); do echo $i; echo $((i % 2)) > >/sys/devices/system/cpu/cpu1/online; done > > I'm on reiserfs. gcc 3.4.5. Config sent to you seperately so as not to > cloud lkml. If anyone wants the config, please let me know. Is mime > "attachment" acceptable now on lkml? Ok, so it gets weirder. I have now machine in "hung" state; other consoles still work, but there are no timers - sleep 1 hangs forever. sysrq-t shows kstopmachine hung in hrtimer_try_to_cancel. So I indeed suspect difference-in-kconfig to trigger this, and will try disabling noidlehz. Pavel -- (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html - 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/