From mboxrd@z Thu Jan 1 00:00:00 1970 From: Peter Zijlstra Subject: Re: Warnings about tasks on CPU 1 during STR Date: Mon, 25 Jan 2010 13:50:59 +0100 Message-ID: <1264423859.4283.1725.camel@laptop> References: <201001250542.08642.elendil@planet.nl> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <201001250542.08642.elendil@planet.nl> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: linux-pm-bounces@lists.linux-foundation.org Errors-To: linux-pm-bounces@lists.linux-foundation.org To: Frans Pop Cc: linux-pm@lists.linux-foundation.org, linux-kernel@vger.kernel.org List-Id: linux-pm@vger.kernel.org On Mon, 2010-01-25 at 05:42 +0100, Frans Pop wrote: > With 2.6.33-rc5 during suspend to RAM I'm getting a bunch of warnings > I've not seen with earlier kernel versions: > > PM: late suspend of devices complete after 28.784 msecs > ACPI: Preparing to enter system sleep state S3 > Disabling non-boot CPUs ... > CPU 1 is now offline > SMP alternatives: switching to UP code > Task events/1 (pid = 10) is on cpu 1 (state = 1, flags = 84208040) > Task khelper (pid = 11) is on cpu 1 (state = 1, flags = 80208040) > Task sync_supers (pid = 77) is on cpu 1 (state = 1, flags = 80208040) > Task bdi-default (pid = 79) is on cpu 1 (state = 2, flags = 80a15040) > Task kblockd/1 (pid = 81) is on cpu 1 (state = 1, flags = 84208040) > [...] > Task pm-suspend (pid = 29782) is on cpu 1 (state = 2, flags = 414000) > Extended CMOS year: 2000 > Back to C! > > All the "Task X is on cpu 1" messages (76 in total) are new. Bug or > intentional? As it is a warning, I suspect a bug. http://lkml.org/lkml/2010/1/21/175