From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751449AbdANIyP (ORCPT ); Sat, 14 Jan 2017 03:54:15 -0500 Received: from mx0a-001b2d01.pphosted.com ([148.163.156.1]:36103 "EHLO mx0a-001b2d01.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751114AbdANIyO (ORCPT ); Sat, 14 Jan 2017 03:54:14 -0500 Date: Sat, 14 Jan 2017 00:54:06 -0800 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 0/6] Dynticks updates for 4.11 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: 17011408-8235-0000-0000-00000AB5DB4C X-IBM-SpamModules-Scores: X-IBM-SpamModules-Versions: BY=3.00006430; HX=3.00000240; KW=3.00000007; PH=3.00000004; SC=3.00000199; SDB=6.00807463; UDB=6.00393074; IPR=6.00584801; BA=6.00005055; NDR=6.00000001; ZLA=6.00000005; ZF=6.00000009; ZB=6.00000000; ZP=6.00000000; ZH=6.00000000; ZU=6.00000002; MB=3.00013919; XFM=3.00000011; UTC=2017-01-14 08:54:11 X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 17011408-8236-0000-0000-000038BBB0EE Message-Id: <20170114085406.GA19052@linux.vnet.ibm.com> X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10432:,, definitions=2017-01-14_01:,, 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=8.0.1-1612050000 definitions=main-1701140130 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hello! This series provides dynticks updates: 1-4. Abstract access to the dyntick counter, replacing the current open-coding of atomic operations. 5. Check cond_resched_rcu_qs() state less often to reduce GP overhead. 6. Adjust FQS offline checks for exact online-CPU detection. Thanx, Paul ------------------------------------------------------------------------ include/linux/rcutiny.h | 6 + include/trace/events/rcu.h | 10 - kernel/rcu/tree.c | 245 +++++++++++++++++++++++++++++++-------------- kernel/rcu/tree.h | 2 kernel/rcu/tree_exp.h | 12 -- kernel/rcu/tree_plugin.h | 2 kernel/rcu/tree_trace.c | 2 7 files changed, 190 insertions(+), 89 deletions(-)