Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752584AbaGGWiE (ORCPT ); Mon, 7 Jul 2014 18:38:04 -0400 Received: from e38.co.us.ibm.com ([32.97.110.159]:43710 "EHLO e38.co.us.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751307AbaGGWiC (ORCPT ); Mon, 7 Jul 2014 18:38:02 -0400 Date: Mon, 7 Jul 2014 15:37:56 -0700 From: "Paul E. McKenney" To: linux-kernel@vger.kernel.org Cc: mingo@kernel.org, laijs@cn.fujitsu.com, dipankar@in.ibm.com, akpm@linux-foundation.org, mathieu.desnoyers@efficios.com, josh@joshtriplett.org, niv@us.ibm.com, 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, sbw@mit.edu Subject: [PATCH tip/core/rcu 0/17] Miscellaneous fixes for 3.17 Message-ID: <20140707223756.GA7187@linux.vnet.ibm.com> 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-MML: disable X-Content-Scanned: Fidelis XPS MAILER x-cbid: 14070722-1344-0000-0000-000002A9C221 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hello! This series provides miscellaneous fixes: 1. Document deadlock-avoidance information in rcu_read_unlock()'s docbook comment header. 2. Remove obsolete references to TINY_PREEMPT_RCU. 3. Add deadlock explanation to local_irq_save() call in __lock_task_sighand(). 4. Make the rcu_node arrays be static const char * const, courtesy of Fabian Frederick. 5. Remove redundant ACCESS_ONCE() from tick_do_timer_cpu under #ifdef CONFIG_NO_HZ_FULL. 6. Eliminate read-modify-write ACCESS_ONCE() calls. 7. Loosen __call_rcu()'s rcu_head alignment constraint to handle m68k's 16-bit alignment. 8. Allow post-unlock reference for rt_mutex. 9. Check both root and current rcu_node structures when setting up future grace periods, courtesy of Pranith Kumar. 10. Simplify priority boosting by putting rt_mutex in rcu_node structure. 11. Bind grace-period kthreads to no-NO_HZ_FULL CPUs instead of the timekeeping CPU, at least for CONFIG_NO_HZ_FULL_SYSIDLE=n. 12. Don't use NMIs to dump other CPUs' stacks. 13. Use __this_cpu_read() instead of per_cpu_ptr(), courtesy of Shan Wei. 14. Remove CONFIG_PROVE_RCU_DELAY. 15. Fix __rcu_reclaim to use true/false instead of 1/0. 16. Fix sparse warning in rcu_initiate_boost(), courtesy of Pranith Kumar. 17. Fix sparse warning in rcu_report_unblock_qs_rnp(), again courtesy of Pranith Kumar. Thanx, Paul ------------------------------------------------------------------------ b/include/linux/init_task.h | 9 -- b/include/linux/rcupdate.h | 45 ++++++++-- b/include/linux/sched.h | 6 - b/include/linux/tick.h | 19 ++++ b/init/Kconfig | 2 b/kernel/rcu/rcu.h | 8 + b/kernel/rcu/srcu.c | 4 b/kernel/rcu/tree.c | 59 ++++++-------- b/kernel/rcu/tree.h | 8 + b/kernel/rcu/tree_plugin.h | 52 +++++++----- b/kernel/rcu/update.c | 3 b/kernel/signal.c | 4 b/kernel/time/tick-sched.c | 10 ++ b/tools/testing/selftests/rcutorture/configs/rcu/TREE01 | 1 b/tools/testing/selftests/rcutorture/configs/rcu/TREE02 | 1 b/tools/testing/selftests/rcutorture/configs/rcu/TREE02-T | 1 b/tools/testing/selftests/rcutorture/configs/rcu/TREE03 | 1 b/tools/testing/selftests/rcutorture/configs/rcu/TREE04 | 1 b/tools/testing/selftests/rcutorture/configs/rcu/TREE05 | 1 b/tools/testing/selftests/rcutorture/configs/rcu/TREE06 | 1 b/tools/testing/selftests/rcutorture/configs/rcu/TREE07 | 1 b/tools/testing/selftests/rcutorture/configs/rcu/TREE08 | 1 b/tools/testing/selftests/rcutorture/configs/rcu/TREE08-T | 1 b/tools/testing/selftests/rcutorture/configs/rcu/TREE09 | 1 24 files changed, 147 insertions(+), 93 deletions(-) -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/