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Violators will be prosecuted; (version=TLSv1/SSLv3 cipher=AES256-GCM-SHA384 bits=256/256) Tue, 26 Mar 2019 23:12:53 -0000 Received: from b01ledav003.gho.pok.ibm.com (b01ledav003.gho.pok.ibm.com [9.57.199.108]) by b01cxnp23032.gho.pok.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id x2QNCqfr22806596 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Tue, 26 Mar 2019 23:12:52 GMT Received: from b01ledav003.gho.pok.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 22152B2065; Tue, 26 Mar 2019 23:12:52 +0000 (GMT) Received: from b01ledav003.gho.pok.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 0237CB205F; Tue, 26 Mar 2019 23:12:51 +0000 (GMT) Received: from paulmck-ThinkPad-W541 (unknown [9.70.82.188]) by b01ledav003.gho.pok.ibm.com (Postfix) with ESMTP; Tue, 26 Mar 2019 23:12:51 +0000 (GMT) Received: by paulmck-ThinkPad-W541 (Postfix, from userid 1000) id 17A6F16C60F3; Tue, 26 Mar 2019 16:12:53 -0700 (PDT) Date: Tue, 26 Mar 2019 16:12:53 -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 0/18] Miscellaneous fixes for v5.2 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: 19032623-0068-0000-0000-000003AB7494 X-IBM-SpamModules-Scores: X-IBM-SpamModules-Versions: BY=3.00010820; HX=3.00000242; KW=3.00000007; PH=3.00000004; SC=3.00000282; SDB=6.01180132; UDB=6.00617572; IPR=6.00960848; MB=3.00026169; MTD=3.00000008; XFM=3.00000015; UTC=2019-03-26 23:12:56 X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 19032623-0069-0000-0000-000047F21E07 Message-Id: <20190326231253.GA18343@linux.ibm.com> X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:,, definitions=2019-03-26_15:,, 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=997 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1810050000 definitions=main-1903260156 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hello! This series contains miscellaneous fixes. 1. Unconditionally expedite during suspend/hibernate (unless the real-time guys have disabled expediting altogether, that is). 2. Avoid unnecessary softirq when system is idle, courtesy of Joel Fernandes. 3. rcu_qs -- Use raise_softirq_irqoff to not save irqs twice, courtesy of Cyrill Gorcunov. 4. Make exit_rcu() handle non-preempted RCU readers. 5. Set rcutree.kthread_prio sysfs access to read-only, courtesy of Liu Song. 6. MAINTAINERS: RCU now has its own email list. 7. MAINTAINERS: Add -rcu branch name ("dev"). 8. rcu: Move common code out of if-else block, courtesy of Akira Yokosawa. 9. Allow rcu_nocbs= to specify all CPUs. 10. Report error for bad rcu_nocbs= parameter values. 11. Fix self-wakeups for grace-period kthread, courtesy of Neeraj Upadhyay. 12. Default jiffies_to_sched_qs to jiffies_till_sched_qs, courtesy of Neeraj Upadhyay. 13. Do a single rhp->func read in rcu_head_after_call_rcu(), courtesy of Neeraj Upadhyay. 14. Update jiffies_to_sched_qs and adjust_jiffies_till_sched_qs() comments. 15. Fix force_qs_rnp() header comment, courtesy of Zhouyi Zhou. 16. Eliminate redundant NULL-pointer check. 17. Fix typo in tree_exp.h comment. 18. Correct READ_ONCE()/WRITE_ONCE() for ->rcu_read_unlock_special. Thanx, Paul ------------------------------------------------------------------------ Documentation/admin-guide/kernel-parameters.txt | 4 +- MAINTAINERS | 16 ++++---- include/linux/rcupdate.h | 6 ++- kernel/rcu/tiny.c | 2 - kernel/rcu/tree.c | 31 +++++++-------- kernel/rcu/tree_exp.h | 4 +- kernel/rcu/tree_plugin.h | 48 +++++++++++++++--------- 7 files changed, 63 insertions(+), 48 deletions(-)