Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755732AbaJ1WNl (ORCPT ); Tue, 28 Oct 2014 18:13:41 -0400 Received: from e7.ny.us.ibm.com ([32.97.182.137]:58257 "EHLO e7.ny.us.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755136AbaJ1WNi (ORCPT ); Tue, 28 Oct 2014 18:13:38 -0400 Date: Tue, 28 Oct 2014 15:09:44 -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, 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 0/9] Miscellaneous fixes for 3.19 Message-ID: <20141028220944.GA26114@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: 14102822-0025-0000-0000-000000F05F10 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hello! This series provides miscellaneous fixes: 1. Removes the CONFIG_RCU_CPU_STALL_VERBOSE, so that RCU CPU stall warnings are henceforth unconditionally verbose. (Another RCU Kconfig variable bites the dust!) 2. Allow 1- and 2-byte smp_load_acquire() and smp_store_release(). This has the side effect of removing support for pre-EV56 Alpha CPUs, and the official Alpha maintainers have thus far been silent on this issue. 3. Use rcu_dereference() for accessing struct mapped_device, courtesy of Pranith Kumar. 4. Annotate the dm_table's ->map field with __rcu, courtesy of Pranith Kumar. 5. Add sparse checking for use of RCU_INIT_POINTER() on a non-__rcu pointer, courtesy of Pranith Kumar. 6. Prevent cond_resched_rcu_qs() from doing gratuitous call to rcu_note_voluntary_context_switch(). 7. Update the list of rcu_read_unlock() potential deadlocks, courtesy of Oleg Nesterov. 8. Bind rcu_tasks_kthread() to housekeeping CPUs in CONFIG_NO_HZ_FULL builds. 9. Provide lockless_dereference() for times when you want rcu_dereference(), but without the sparse and lockdep-RCU noise. Thanx, Paul ------------------------------------------------------------------------ b/Documentation/RCU/stallwarn.txt | 6 -- b/drivers/md/dm.c | 10 ++-- b/include/linux/compiler.h | 2 b/include/linux/rcupdate.h | 24 ++++++++-- b/kernel/rcu/tree_plugin.h | 13 ----- b/kernel/rcu/update.c | 3 - b/lib/Kconfig.debug | 12 ----- 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 b/tools/testing/selftests/rcutorture/doc/TREE_RCU-kconfig.txt | 3 - 19 files changed, 30 insertions(+), 54 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/