Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752827AbaBXKOi (ORCPT ); Mon, 24 Feb 2014 05:14:38 -0500 Received: from e28smtp04.in.ibm.com ([122.248.162.4]:57891 "EHLO e28smtp04.in.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751836AbaBXKOg (ORCPT ); Mon, 24 Feb 2014 05:14:36 -0500 Message-ID: <530B1B80.4000307@linux.vnet.ibm.com> Date: Mon, 24 Feb 2014 18:14:24 +0800 From: Michael wang User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:24.0) Gecko/20100101 Thunderbird/24.2.0 MIME-Version: 1.0 To: Peter Zijlstra CC: Sasha Levin , Ingo Molnar , LKML Subject: Re: sched: hang in migrate_swap References: <5304F32A.4040907@oracle.com> <5305856F.3000109@linux.vnet.ibm.com> <53078241.3060201@oracle.com> <53080122.609@linux.vnet.ibm.com> <530ABB44.5000601@oracle.com> <530AD653.3000808@linux.vnet.ibm.com> <20140224071028.GW9987@twins.programming.kicks-ass.net> In-Reply-To: <20140224071028.GW9987@twins.programming.kicks-ass.net> Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit X-TM-AS-MML: disable X-Content-Scanned: Fidelis XPS MAILER x-cbid: 14022410-5564-0000-0000-00000C2BD427 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 02/24/2014 03:10 PM, Peter Zijlstra wrote: > On Mon, Feb 24, 2014 at 01:19:15PM +0800, Michael wang wrote: >> Peter, do we accidentally missed this commit? >> >> http://git.kernel.org/tip/477af336ba06ef4c32e97892bb0d2027ce30f466 > > Ingo dropped it on Saturday because it makes locking_selftest() unhappy. > > That is because we call locking_selftest() way before we're ready to > call schedule() and guess what it does :-/ > > I'm not entirely sure what to do.. ideally I'd shoot locking_selftest in > the head, but clearly that's not entirely desired either. ...what about move idle_balance() back to it's old position? pull_rt_task() logical could be after idle_balance() if still no FAIR and DL, then go into the pick loop, that may could make things more clean & clear, should we have a try? Regards, Michael Wang > -- > 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/ > -- 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/