From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753047AbeAaJuP (ORCPT ); Wed, 31 Jan 2018 04:50:15 -0500 Received: from mx0b-001b2d01.pphosted.com ([148.163.158.5]:48856 "EHLO mx0a-001b2d01.pphosted.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1751764AbeAaJuL (ORCPT ); Wed, 31 Jan 2018 04:50:11 -0500 Date: Tue, 30 Jan 2018 16:52:16 -0800 From: "Paul E. McKenney" To: Thomas Gleixner Cc: Sebastian Sewior , LKML , Anna-Maria Gleixner , Peter Zijlstra , Ingo Molnar Subject: Re: [PATCH] hrtimer: Reset hrtimer cpu base proper on CPU hotplug Reply-To: paulmck@linux.vnet.ibm.com References: <20180126220917.GI3741@linux.vnet.ibm.com> <20180129082047.hash3pnhpztzcg22@linutronix.de> <20180129095738.GU3741@linux.vnet.ibm.com> <20180129234347.GA26365@linux.vnet.ibm.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.21 (2010-09-15) X-TM-AS-GCONF: 00 x-cbid: 18013109-0036-0000-0000-000002B63CDB X-IBM-SpamModules-Scores: X-IBM-SpamModules-Versions: BY=3.00008455; HX=3.00000241; KW=3.00000007; PH=3.00000004; SC=3.00000248; SDB=6.00982938; UDB=6.00498462; IPR=6.00762221; BA=6.00005804; NDR=6.00000001; ZLA=6.00000005; ZF=6.00000009; ZB=6.00000000; ZP=6.00000000; ZH=6.00000000; ZU=6.00000002; MB=3.00019302; XFM=3.00000015; UTC=2018-01-31 09:50:08 X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 18013109-0037-0000-0000-0000432D80CA Message-Id: <20180131005216.GE3741@linux.vnet.ibm.com> X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10432:,, definitions=2018-01-31_04:,, signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 malwarescore=0 suspectscore=0 phishscore=0 bulkscore=0 spamscore=0 clxscore=1015 lowpriorityscore=0 impostorscore=0 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1709140000 definitions=main-1801310130 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, Jan 30, 2018 at 10:03:17PM +0100, Thomas Gleixner wrote: > On Mon, 29 Jan 2018, Paul E. McKenney wrote: > > > On Mon, Jan 29, 2018 at 01:57:38AM -0800, Paul E. McKenney wrote: > > > On Mon, Jan 29, 2018 at 09:20:48AM +0100, Sebastian Sewior wrote: > > > > On 2018-01-26 14:09:17 [-0800], Paul E. McKenney wrote: > > > > > find this one. ;-) But it did pass rcutorture testing for a great many > > > > > years, didn't it? :-/ > > > > > > > > It started to trigger better (or at all) on our test box with > > > > modprobe kvm_intel preemption_timer=n > > > > > > > > on the host kernel so maybe a completely unrelated change helped to > > > > trigger this. > > > > > > Good point! > > > > > > And testing continues, currently at 108 hours of TREE01 without any > > > waylayed timers, so looking good! ;-) > > > > > > Just kicked off another 70 hours worth. > > > > And those completed without incident for a total of 178 hours. I believe > > we can call this one fixed. Thank you all!!! > > > > One question... Is the patch shown below needed, or is this just yet > > another case of me being confused? (The lack of it is not triggering, > > but...) > > See commit 26456f87aca7 Got it, thank you! I will remove my patch from my queue. Thanx, Paul