From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S965702AbcDLPnQ (ORCPT ); Tue, 12 Apr 2016 11:43:16 -0400 Received: from e32.co.us.ibm.com ([32.97.110.150]:53740 "EHLO e32.co.us.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S965275AbcDLPnP (ORCPT ); Tue, 12 Apr 2016 11:43:15 -0400 X-IBM-Helo: d03dlp01.boulder.ibm.com X-IBM-MailFrom: paulmck@linux.vnet.ibm.com X-IBM-RcptTo: linux-kernel@vger.kernel.org Date: Tue, 12 Apr 2016 08:43:32 -0700 From: "Paul E. McKenney" To: linux-kernel@vger.kernel.org Cc: 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, dvhart@linux.intel.com, fweisbec@gmail.com, oleg@redhat.com, bobby.prani@gmail.com Subject: [PATCH tip/core/rcu 0/24] Torture-test changes for 4.7 Message-ID: <20160412154332.GA24983@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: 16041215-0005-0000-0000-000024236397 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hello! This series contains torture-test changes for RCU, most notably a new test for performance of RCU grace periods named "rcuperf": 1. Update scripting to accommodate rcuperf. 2. Allow for rcupdate.rcu_normal in rcu_torture_writer() decisions. 3. Expedited-GP batch progress access to torturing for progress statistics. 4. Add RCU grace-period performance tests, AKA "rcuperf". 5. Documentation for rcuperf kernel parameters. 6. Bind rcuperf reader/writer kthreads to CPUs. 7. Set rcuperf writer kthreads to real-time priority. 8. Print measure of batching efficiency. 9. Make rcuperf collect expedited event-trace data. 10. Make scripts analyze rcuperf trace data, if present. 11. Add rcuperf holdoff boot parameter to reduce interference. 12. Avoid RCU CPU stall warning and RT throttling. 13. Add largish-system rcuperf scenario. 14. Do not wake up shutdown wait queue if "shutdown" is false, courtesy of Artem Savkov. 15. Remove redundant initialization to zero. 16. Consider FROZEN hotplug notifier transitions, courtesy of Anna-Maria Gleixner. 17. Clarify refusal to run more than one torture test. 18. Kill qemu, not parent process. 19. Convert test duration to seconds early. 20. Add OS-jitter capability. 21. Don't rebuild identical kernel. 22. Dump trace buffer upon shutdown. 23. Add irqs-disabled test for call_rcu(). 24. Add boot-time adjustment of leaf fanout. Thanx, Paul ------------------------------------------------------------------------ Documentation/kernel-parameters.txt | 38 include/linux/rcutiny.h | 16 include/linux/rcutree.h | 2 kernel/rcu/Makefile | 1 kernel/rcu/rcuperf.c | 661 +++++++++- kernel/rcu/rcutorture.c | 12 kernel/rcu/tree.c | 22 kernel/torture.c | 4 lib/Kconfig.debug | 33 tools/testing/selftests/rcutorture/bin/jitter.sh | 83 + tools/testing/selftests/rcutorture/bin/kvm-recheck-rcuperf-ftrace.sh | 121 + tools/testing/selftests/rcutorture/bin/kvm-recheck-rcuperf.sh | 116 + tools/testing/selftests/rcutorture/bin/kvm-recheck.sh | 5 tools/testing/selftests/rcutorture/bin/kvm-test-1-run.sh | 61 tools/testing/selftests/rcutorture/bin/kvm.sh | 24 tools/testing/selftests/rcutorture/configs/rcu/TREE04 | 2 tools/testing/selftests/rcutorture/configs/rcu/TREE04.boot | 2 tools/testing/selftests/rcutorture/configs/rcuperf/CFLIST | 1 tools/testing/selftests/rcutorture/configs/rcuperf/CFcommon | 2 tools/testing/selftests/rcutorture/configs/rcuperf/TREE | 20 tools/testing/selftests/rcutorture/configs/rcuperf/TREE54 | 23 tools/testing/selftests/rcutorture/configs/rcuperf/ver_functions.sh | 52 22 files changed, 1260 insertions(+), 41 deletions(-)