From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S934078AbbELW6A (ORCPT ); Tue, 12 May 2015 18:58:00 -0400 Received: from e35.co.us.ibm.com ([32.97.110.153]:40507 "EHLO e35.co.us.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S933787AbbELW57 (ORCPT ); Tue, 12 May 2015 18:57:59 -0400 Date: Tue, 12 May 2015 15:57:53 -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 0/13] Torture-test updates for 4.2 Message-ID: <20150512225753.GA5012@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: 15051222-0013-0000-0000-00000AB44372 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hello! This series contains torture-test updates: 1. Use correct locking primitive, thus avoiding deadlock, courtesy of Alexey Kodanev. 2. Exchange TREE03 and TREE04 geometries in order to improve bug-location rates. 3. Exchange TREE03 and TREE08 NR_CPUS, speed up CPU hotplug to further improve bug-location rates. 4. Allow negative values of nreaders to in order to oversubscribe the CPUs, again to improve bug-location rates. 5. Change longdelay_us to longdelay_ms in order to better reflect reality. (Not that gcc cares, but people reading the code just might.) 6. Replace open-coded memory barriers with the shiny new smp_store_release() and smp_load_acquire() primitives. 7. Test SRCU cleanup code path in order to improve test coverage. 8. Avoid explicitly setting CONFIG_TASKS_RCU, given that it is now set implicitly based on other configuration options. 9. Update configuration fragments from CONFIG_RCU_FANOUT_EXACT to the new rcutree.rcu_fanout_exact= boot parameter. 10. Make rcutorture scripts force RCU_EXPERT so that they can still build the needed kernel configurations. 11. Update TREE_RCU-kconfig.txt to describe new kernel-parameter setup. 12. Make torture scripts display "make oldconfig" errors 13. Allow repetition factors in Kconfig-fragment lists. Because typing 48 repetitions of "TINY02" is getting old. Thanx, Paul ------------------------------------------------------------------------ b/kernel/locking/locktorture.c | 14 - b/kernel/rcu/rcutorture.c | 103 ++++++---- b/tools/testing/selftests/rcutorture/bin/configinit.sh | 2 b/tools/testing/selftests/rcutorture/bin/kvm-recheck.sh | 4 b/tools/testing/selftests/rcutorture/bin/kvm.sh | 25 +- b/tools/testing/selftests/rcutorture/configs/rcu/SRCU-N | 1 b/tools/testing/selftests/rcutorture/configs/rcu/SRCU-P | 1 b/tools/testing/selftests/rcutorture/configs/rcu/SRCU-P.boot | 2 b/tools/testing/selftests/rcutorture/configs/rcu/TASKS01 | 5 b/tools/testing/selftests/rcutorture/configs/rcu/TASKS02 | 1 b/tools/testing/selftests/rcutorture/configs/rcu/TASKS03 | 2 b/tools/testing/selftests/rcutorture/configs/rcu/TINY02 | 2 b/tools/testing/selftests/rcutorture/configs/rcu/TREE01 | 1 b/tools/testing/selftests/rcutorture/configs/rcu/TREE02 | 2 b/tools/testing/selftests/rcutorture/configs/rcu/TREE02-T | 1 b/tools/testing/selftests/rcutorture/configs/rcu/TREE03 | 8 b/tools/testing/selftests/rcutorture/configs/rcu/TREE03.boot | 1 b/tools/testing/selftests/rcutorture/configs/rcu/TREE04 | 8 b/tools/testing/selftests/rcutorture/configs/rcu/TREE05 | 4 b/tools/testing/selftests/rcutorture/configs/rcu/TREE06 | 4 b/tools/testing/selftests/rcutorture/configs/rcu/TREE06.boot | 1 b/tools/testing/selftests/rcutorture/configs/rcu/TREE07 | 4 b/tools/testing/selftests/rcutorture/configs/rcu/TREE08 | 6 b/tools/testing/selftests/rcutorture/configs/rcu/TREE08-T | 1 b/tools/testing/selftests/rcutorture/configs/rcu/TREE08-T.boot | 1 b/tools/testing/selftests/rcutorture/configs/rcu/TREE08.boot | 1 b/tools/testing/selftests/rcutorture/configs/rcu/TREE09 | 1 b/tools/testing/selftests/rcutorture/doc/TREE_RCU-kconfig.txt | 36 +-- 28 files changed, 148 insertions(+), 94 deletions(-)