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Violators will be prosecuted; (version=TLSv1/SSLv3 cipher=AES256-GCM-SHA384 bits=256/256) Thu, 30 May 2019 16:08:16 +0100 Received: from b01ledav003.gho.pok.ibm.com (b01ledav003.gho.pok.ibm.com [9.57.199.108]) by b01cxnp23034.gho.pok.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id x4UF8FjE25428290 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Thu, 30 May 2019 15:08:15 GMT Received: from b01ledav003.gho.pok.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 5D99DB2066; Thu, 30 May 2019 15:08:15 +0000 (GMT) Received: from b01ledav003.gho.pok.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 3CF15B2064; Thu, 30 May 2019 15:08:15 +0000 (GMT) Received: from paulmck-ThinkPad-W541 (unknown [9.70.82.216]) by b01ledav003.gho.pok.ibm.com (Postfix) with ESMTP; Thu, 30 May 2019 15:08:15 +0000 (GMT) Received: by paulmck-ThinkPad-W541 (Postfix, from userid 1000) id 0420A16C3620; Thu, 30 May 2019 08:08:16 -0700 (PDT) Date: Thu, 30 May 2019 08:08:16 -0700 From: "Paul E. McKenney" To: rcu@vger.kernel.org Cc: linux-kernel@vger.kernel.org, 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, fweisbec@gmail.com, oleg@redhat.com, joel@joelfernandes.org Subject: [PATCH tip/core/rcu 0/4] RCU-sync updates for v5.3 Reply-To: paulmck@linux.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: 19053015-0040-0000-0000-000004F6833D X-IBM-SpamModules-Scores: X-IBM-SpamModules-Versions: BY=3.00011185; HX=3.00000242; KW=3.00000007; PH=3.00000004; SC=3.00000286; SDB=6.01210788; UDB=6.00636159; IPR=6.00991822; MB=3.00027120; MTD=3.00000008; XFM=3.00000015; UTC=2019-05-30 15:08:20 X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 19053015-0041-0000-0000-000009029D8E Message-Id: <20190530150816.GA32130@linux.ibm.com> X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:,, definitions=2019-05-30_08:,, signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 malwarescore=0 suspectscore=13 phishscore=0 bulkscore=0 spamscore=0 clxscore=1015 lowpriorityscore=0 mlxscore=0 impostorscore=0 mlxlogscore=804 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1810050000 definitions=main-1905300107 Sender: rcu-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: rcu@vger.kernel.org Hello! This series contains flavor-consolidation updates to RCU-sync: 1. Kill rcu_sync_type/gp_type, courtesy of Oleg Nesterov. 2. Use DEFINE_STATIC_PERCPU_RWSEM() to initialize dup_mmap_sem in uprobes, courtesy of Oleg Nesterov. 3. Add DEFINE_PERCPU_RWSEM(), use it to initialize cgroup_threadgroup_rwsem in percpu-rwsem, courtesy of Oleg Nesterov. 4. Simplify the state machine, courtesy of Oleg Nesterov. Thanx, Paul ------------------------------------------------------------------------ include/linux/percpu-rwsem.h | 10 + include/linux/rcu_sync.h | 40 ++----- kernel/cgroup/cgroup.c | 3 kernel/events/uprobes.c | 4 kernel/locking/percpu-rwsem.c | 2 kernel/rcu/sync.c | 220 +++++++++++++++++++----------------------- 6 files changed, 121 insertions(+), 158 deletions(-)