From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754001AbcEPOOI (ORCPT ); Mon, 16 May 2016 10:14:08 -0400 Received: from mail-wm0-f68.google.com ([74.125.82.68]:34080 "EHLO mail-wm0-f68.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753537AbcEPOOG (ORCPT ); Mon, 16 May 2016 10:14:06 -0400 Date: Mon, 16 May 2016 16:14:00 +0200 From: Ingo Molnar To: Linus Torvalds Cc: linux-kernel@vger.kernel.org, "Paul E. McKenney" , Peter Zijlstra , Thomas Gleixner , Andrew Morton Subject: [GIT PULL] RCU changes for v4.7 Message-ID: <20160516141400.GA18813@gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.5.24 (2015-08-30) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Linus, Please pull the latest core-rcu-for-linus git tree from: git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git core-rcu-for-linus # HEAD: 41ed943d855c3fa2bf6fecc33250b294bd568b7a Merge branch 'for-mingo' of git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu into core/rcu The main changes are: * Documentation updates, including fixes to the design-level requirements documentation and a fixed version of the design-level data-structure documentation. These fixes include removing cartoons and getting rid of the html/htmlx duplication. * Further improvements to the new-age expedited grace periods. * Miscellaneous fixes. * Torture-test changes, including a new rcuperf module for measuring RCU grace-period performance and scalability, which is useful for the expedited-grace-period changes. Thanks, Ingo ------------------> Anna-Maria Gleixner (1): rcutorture: Consider FROZEN hotplug notifier transitions Artem Savkov (1): rcuperf: Do not wake up shutdown wait queue if "shutdown" is false. Boqun Feng (1): rcu: Remove superfluous versions of rcu_read_lock_sched_held() Paul E. McKenney (52): rcu: Consolidate dumping of ftrace buffer documentation: Add real-time requirements from CPU-bound workloads documentation: Add synchronize_rcu_mult() to the requirements documentation: Explain why rcu_read_lock() needs no barrier() documentation: Document illegality of call_rcu() from offline CPUs documentation: Remove unnecessary images from requirements documentation: Get rid of duplicate .htmlx file documentation: Sharpen up the no-readers quick quiz documentation: Emphasize the call_rcu() is illegal from idle rcu: Make expedited RCU-sched grace period immediately detect idle rcu: Make expedited RCU-preempt stall warnings count accurately rcu: Make cond_resched_rcu_qs() supply RCU-sched expedited QS rcu: Fix synchronize_rcu_expedited() header comment rcu: Add event tracing definitions for expedited grace periods rcu: Add funnel-locking tracing for expedited grace periods rcu: Add expedited-grace-period event tracing rcu: Remove expedited GP funnel-lock bypass rcu: Force boolean subscript for expedited stall warnings rcu: Shorten expedited_workdone* to exp_workdone* rcu: Enforce expedited-GP fairness via funnel wait queue rcu: Add exp_funnel_lock() fastpath rcu: Consolidate expedited GP code into rcu_exp_wait_wake() rcu: Consolidate expedited GP tracing into rcu_exp_gp_seq_snap() rcu: Consolidate expedited GP code into exp_funnel_lock() rcu: Overlap wakeups with next expedited grace period rcu: Awaken grace-period kthread when stalled rcu: Make FQS schedule advance only if FQS happened rcu: Awaken grace-period kthread if too long since FQS rcu: Dump ftrace buffer when kicking grace-period kthread rcutorture: Update scripting to accommodate rcuperf rcutorture: Allow for rcupdate.rcu_normal rcutorture: Expedited-GP batch progress access to torturing rcutorture: Add RCU grace-period performance tests rcutorture: Documentation for rcuperf kernel parameters rcutorture: Bind rcuperf reader/writer kthreads to CPUs rcutorture: Set rcuperf writer kthreads to real-time priority rcutorture: Print measure of batching efficiency rcutorture: Make rcuperf collect expedited event-trace data rcutorture: Make scripts analyze rcuperf trace data, if present rcutorture: Add rcuperf holdoff boot parameter to reduce interference rcutorture: Avoid RCU CPU stall warning and RT throttling rcutorture: Add largish-system rcuperf scenario rcutorture: Remove redundant initialization to zero torture: Clarify refusal to run more than one torture test torture: Kill qemu, not parent process rcutorture: Convert test duration to seconds early documentation: Add documentation for RCU's major data structures rcutorture: Add OS-jitter capability rcutorture: Don't rebuild identical kernel rcutorture: Dump trace buffer upon shutdown rcutorture: Add irqs-disabled test for call_rcu() rcutorture: Add boot-time adjustment of leaf fanout Yao Dongdong (1): documentation: Make sample code and documentation consistent .../Design/Data-Structures/BigTreeClassicRCU.svg | 474 ++++ .../Design/Data-Structures/BigTreeClassicRCUBH.svg | 499 ++++ .../Data-Structures/BigTreeClassicRCUBHdyntick.svg | 695 +++++ .../Data-Structures/BigTreePreemptRCUBHdyntick.svg | 741 ++++++ .../BigTreePreemptRCUBHdyntickCB.svg | 858 ++++++ .../Design/Data-Structures/Data-Structures.html | 1333 ++++++++++ .../Design/Data-Structures/HugeTreeClassicRCU.svg | 939 +++++++ .../RCU/Design/Data-Structures/TreeLevel.svg | 828 ++++++ .../RCU/Design/Data-Structures/TreeMapping.svg | 305 +++ .../Design/Data-Structures/TreeMappingLevel.svg | 380 +++ .../RCU/Design/Data-Structures/blkd_task.svg | 843 ++++++ .../RCU/Design/Data-Structures/nxtlist.svg | 396 +++ .../RCU/Design/Requirements/2013-08-is-it-dead.png | Bin 100825 -> 0 bytes .../RCU/Design/Requirements/RCUApplicability.svg | 237 -- .../RCU/Design/Requirements/Requirements.html | 941 ++++--- .../RCU/Design/Requirements/Requirements.htmlx | 2741 -------------------- Documentation/RCU/Design/htmlqqz.sh | 108 - Documentation/RCU/trace.txt | 10 +- Documentation/RCU/whatisRCU.txt | 22 +- Documentation/kernel-parameters.txt | 38 + include/linux/rcupdate.h | 30 +- include/linux/rcutiny.h | 16 + include/linux/rcutree.h | 2 + include/trace/events/rcu.h | 79 +- kernel/rcu/Makefile | 1 + kernel/rcu/rcuperf.c | 655 +++++ kernel/rcu/rcutorture.c | 29 +- kernel/rcu/tree.c | 302 ++- kernel/rcu/tree.h | 20 +- kernel/rcu/tree_plugin.h | 37 +- kernel/rcu/tree_trace.c | 13 +- kernel/rcu/update.c | 4 +- kernel/torture.c | 4 +- lib/Kconfig.debug | 33 + tools/testing/selftests/rcutorture/bin/jitter.sh | 90 + .../rcutorture/bin/kvm-recheck-rcuperf-ftrace.sh | 121 + .../rcutorture/bin/kvm-recheck-rcuperf.sh | 96 + .../selftests/rcutorture/bin/kvm-recheck.sh | 5 +- .../selftests/rcutorture/bin/kvm-test-1-run.sh | 59 +- tools/testing/selftests/rcutorture/bin/kvm.sh | 24 +- .../selftests/rcutorture/configs/rcu/TREE04 | 2 +- .../selftests/rcutorture/configs/rcu/TREE04.boot | 2 +- .../selftests/rcutorture/configs/rcuperf/CFLIST | 1 + .../selftests/rcutorture/configs/rcuperf/CFcommon | 2 + .../selftests/rcutorture/configs/rcuperf/TREE | 20 + .../selftests/rcutorture/configs/rcuperf/TREE54 | 23 + .../rcutorture/configs/rcuperf/ver_functions.sh | 52 + 47 files changed, 10417 insertions(+), 3693 deletions(-) create mode 100644 Documentation/RCU/Design/Data-Structures/BigTreeClassicRCU.svg create mode 100644 Documentation/RCU/Design/Data-Structures/BigTreeClassicRCUBH.svg create mode 100644 Documentation/RCU/Design/Data-Structures/BigTreeClassicRCUBHdyntick.svg create mode 100644 Documentation/RCU/Design/Data-Structures/BigTreePreemptRCUBHdyntick.svg create mode 100644 Documentation/RCU/Design/Data-Structures/BigTreePreemptRCUBHdyntickCB.svg create mode 100644 Documentation/RCU/Design/Data-Structures/Data-Structures.html create mode 100644 Documentation/RCU/Design/Data-Structures/HugeTreeClassicRCU.svg create mode 100644 Documentation/RCU/Design/Data-Structures/TreeLevel.svg create mode 100644 Documentation/RCU/Design/Data-Structures/TreeMapping.svg create mode 100644 Documentation/RCU/Design/Data-Structures/TreeMappingLevel.svg create mode 100644 Documentation/RCU/Design/Data-Structures/blkd_task.svg create mode 100644 Documentation/RCU/Design/Data-Structures/nxtlist.svg delete mode 100644 Documentation/RCU/Design/Requirements/2013-08-is-it-dead.png delete mode 100644 Documentation/RCU/Design/Requirements/RCUApplicability.svg delete mode 100644 Documentation/RCU/Design/Requirements/Requirements.htmlx delete mode 100755 Documentation/RCU/Design/htmlqqz.sh create mode 100644 kernel/rcu/rcuperf.c create mode 100755 tools/testing/selftests/rcutorture/bin/jitter.sh create mode 100755 tools/testing/selftests/rcutorture/bin/kvm-recheck-rcuperf-ftrace.sh create mode 100755 tools/testing/selftests/rcutorture/bin/kvm-recheck-rcuperf.sh create mode 100644 tools/testing/selftests/rcutorture/configs/rcuperf/CFLIST create mode 100644 tools/testing/selftests/rcutorture/configs/rcuperf/CFcommon create mode 100644 tools/testing/selftests/rcutorture/configs/rcuperf/TREE create mode 100644 tools/testing/selftests/rcutorture/configs/rcuperf/TREE54 create mode 100644 tools/testing/selftests/rcutorture/configs/rcuperf/ver_functions.sh