Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751622AbdG1Afw (ORCPT ); Thu, 27 Jul 2017 20:35:52 -0400 Received: from mx0a-001b2d01.pphosted.com ([148.163.156.1]:35100 "EHLO mx0a-001b2d01.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751568AbdG1Afu (ORCPT ); Thu, 27 Jul 2017 20:35:50 -0400 Date: Thu, 27 Jul 2017 17:35:47 -0700 From: "Paul E. McKenney" To: mingo@kernel.org Cc: jhugo@codeaurora.org, tglx@linutronix.de, bigeasy@linutronix.de, anna-maria@linutronix.de, boris.ostrovsky@oracle.com, richard@nod.at, linux-kernel@vger.kernel.org Subject: [RFC GIT PULL rcu/next] RCU/hotplug fix Reply-To: paulmck@linux.vnet.ibm.com MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.5.21 (2010-09-15) X-TM-AS-GCONF: 00 x-cbid: 17072800-0048-0000-0000-000001CAC74C X-IBM-SpamModules-Scores: X-IBM-SpamModules-Versions: BY=3.00007438; HX=3.00000241; KW=3.00000007; PH=3.00000004; SC=3.00000214; SDB=6.00893869; UDB=6.00446919; IPR=6.00674029; BA=6.00005495; NDR=6.00000001; ZLA=6.00000005; ZF=6.00000009; ZB=6.00000000; ZP=6.00000000; ZH=6.00000000; ZU=6.00000002; MB=3.00016415; XFM=3.00000015; UTC=2017-07-28 00:35:48 X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 17072800-0049-0000-0000-00004208F5CD Message-Id: <20170728003547.GA10932@linux.vnet.ibm.com> X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10432:,, definitions=2017-07-27_14:,, signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 spamscore=0 suspectscore=1 malwarescore=0 phishscore=0 adultscore=0 bulkscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1706020000 definitions=main-1707280007 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1278 Lines: 33 Hello, Ingo, This pull request is for an RCU change that permits waiting for grace periods started by CPUs late in the process of going offline. Lack of this capability is causing failures: http://lkml.kernel.org/r/db9c91f6-1b17-6136-84f0-03c3c2581ab4@codeaurora.org Although these failures predate v4.12, and thus are in some sense not regressions, it would be good for them to be fixed sooner rather than later, hence this RFC pull request. This commit was posted to LKML: http://lkml.kernel.org/r/1500933116-11642-2-git-send-email-paulmck@linux.vnet.ibm.com This commit has been exposed to 0day test robot and -next testing and is available in the git repository at: git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu.git for-mingo for you to fetch changes up to a58163d8ca2c8d288ee9f95989712f98473a5ac2: rcu: Migrate callbacks earlier in the CPU-offline timeline (2017-07-25 13:03:43 -0700) ---------------------------------------------------------------- Paul E. McKenney (1): rcu: Migrate callbacks earlier in the CPU-offline timeline include/linux/rcupdate.h | 1 + kernel/cpu.c | 1 + kernel/rcu/tree.c | 209 +++++++++++++++++++++++++---------------------- 3 files changed, 115 insertions(+), 96 deletions(-)