From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755847AbcHVP3v (ORCPT ); Mon, 22 Aug 2016 11:29:51 -0400 Received: from mx0a-001b2d01.pphosted.com ([148.163.156.1]:37276 "EHLO mx0a-001b2d01.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753243AbcHVP3u (ORCPT ); Mon, 22 Aug 2016 11:29:50 -0400 X-IBM-Helo: d03dlp03.boulder.ibm.com X-IBM-MailFrom: paulmck@linux.vnet.ibm.com Date: Mon, 22 Aug 2016 08:29:56 -0700 From: "Paul E. McKenney" To: linux-kernel@vger.kernel.org Cc: mingo@kernel.org, jiangshanlai@gmail.com, dipankar@in.ibm.com, akpm@linux-foundation.org, mathieu.desnoyers@efficios.com, josh@joshtriplett.org, tglx@linutronix.de, peterz@infradead.org, rostedt@goodmis.org, dhowells@redhat.com, edumazet@google.com, dvhart@linux.intel.com, fweisbec@gmail.com, oleg@redhat.com, bobby.prani@gmail.com Subject: [PATCH tip/core/rcu 0/5] Miscellaneous fixes for 4.9 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-Content-Scanned: Fidelis XPS MAILER x-cbid: 16082215-0016-0000-0000-0000047A636A X-IBM-SpamModules-Scores: X-IBM-SpamModules-Versions: BY=3.00005629; HX=3.00000240; KW=3.00000007; PH=3.00000004; SC=3.00000183; SDB=6.00748118; UDB=6.00353036; IPR=6.00520783; BA=6.00004672; NDR=6.00000001; ZLA=6.00000005; ZF=6.00000009; ZB=6.00000000; ZP=6.00000000; ZH=6.00000000; ZU=6.00000002; MB=3.00012420; XFM=3.00000011; UTC=2016-08-22 15:29:48 X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 16082215-0017-0000-0000-0000323A9247 Message-Id: <20160822152956.GA8160@linux.vnet.ibm.com> X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10432:,, definitions=2016-08-22_07:,, 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=8.0.1-1604210000 definitions=main-1608220161 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hello! This series contains miscellaneous fixes: 1. Fix a soft lockup in the RCU's callback-offload (rcuo) kthreads, courtesy of Ding Tianhong. 2. Use rcu_gp_kthread_wake() to wake up grace period kthreads, avoiding spurious/redundant wakeups, courtesy of Jisheng Zhang. 3. Make wake_up_nohz_cpu() handle CPUs going offline. 4. Don't use modular infrastructure in non-modular code, courtesy of Paul Gortmaker. 5. Avoid redundant quiescent-state chasing by more carefully initializing flags for newly onlined CPUs. Thanx, Paul ------------------------------------------------------------------------ rcu/tree.c | 12 ++++++------ rcu/tree_plugin.h | 1 + rcu/update.c | 3 +-- sched/core.c | 7 +++++++ 4 files changed, 15 insertions(+), 8 deletions(-)