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Date: Tue, 23 Sep 2014 07:23:42 +0200 From: Ingo Molnar <mingo@...nel.org> To: "Paul E. McKenney" <paulmck@...ux.vnet.ibm.com> Cc: linux-kernel@...r.kernel.org, bobby.prani@...il.com, oleg@...hat.com, ard.biesheuvel@...aro.org, joe@...ches.com, rostedt@...dmis.org, dave@...olabs.net, Peter Zijlstra <a.p.zijlstra@...llo.nl>, Thomas Gleixner <tglx@...utronix.de> Subject: Re: [GIT PULL rcu/next] RCU commits for 3.18 * Paul E. McKenney <paulmck@...ux.vnet.ibm.com> wrote: > Hello, Ingo, > > The changes in this series include: > > 1. Update RCU documentation. These were posted to LKML at > https://lkml.org/lkml/2014/8/28/378. > > 2. Miscellaneous fixes. These were posted to LKML at > https://lkml.org/lkml/2014/8/28/386. An additional fix that > eliminates a documented (but now inconvenient) deadlock between > RCU hotplug and expedited grace periods was posted at > https://lkml.org/lkml/2014/8/28/573. > > 3. Changes related to No-CBs CPUs and NO_HZ_FULL. These were posted > to LKML at https://lkml.org/lkml/2014/8/28/412. > > 4. Torture-test updates. These were posted to LKML at > https://lkml.org/lkml/2014/8/28/546 and at > https://lkml.org/lkml/2014/9/11/1114. > > 5. RCU-tasks implementation. These were posted to LKML at > https://lkml.org/lkml/2014/8/28/540. > > All of these have been exposed to -next testing. > These changes are available in the git repository at: > > git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu.git rcu/next > > for you to fetch changes up to dd56af42bd829c6e770ed69812bd65a04eaeb1e4: > > rcu: Eliminate deadlock between CPU hotplug and expedited grace periods (2014-09-18 16:22:27 -0700) > > ---------------------------------------------------------------- > Ard Biesheuvel (1): > rcu: Define tracepoint strings only if CONFIG_TRACING is set > > Davidlohr Bueso (9): > locktorture: Rename locktorture_runnable parameter > locktorture: Add documentation > locktorture: Support mutexes > locktorture: Teach about lock debugging > locktorture: Make statistics generic > torture: Address race in module cleanup > locktorture: Add infrastructure for torturing read locks > locktorture: Support rwsems > locktorture: Introduce torture context > > Joe Perches (1): > rcu: Use pr_alert/pr_cont for printing logs > > Oleg Nesterov (1): > rcu: Uninline rcu_read_lock_held() > > Paul E. McKenney (46): > memory-barriers: Fix control-ordering no-transitivity example > memory-barriers: Retain barrier() in fold-to-zero example > memory-barriers: Fix description of 2-legged-if-based control dependencies > rcu: Break more call_rcu() deadlock involving scheduler and perf > rcu: Make TINY_RCU tinier by putting error checks under #ifdef > rcu: Replace flush_signals() with WARN_ON(signal_pending()) > rcu: Add step to initrd documentation > rcutorture: Test partial nohz_full= configuration > rcutorture: Specify MAXSMP=y for TREE01 > rcutorture: Specify CONFIG_CPUMASK_OFFSTACK=y for TREE07 > rcutorture: Add callback-flood test > torture: Print PID in hung-kernel diagnostic message > torture: Check for nul bytes in console output > rcu: Add call_rcu_tasks() > rcu: Provide cond_resched_rcu_qs() to force quiescent states in long loops > rcu: Add synchronous grace-period waiting for RCU-tasks > rcu: Make TASKS_RCU handle tasks that are almost done exiting > rcutorture: Add torture tests for RCU-tasks > rcutorture: Add RCU-tasks test cases > rcu: Add stall-warning checks for RCU-tasks > rcu: Improve RCU-tasks energy efficiency > documentation: Add verbiage on RCU-tasks stall warning messages > rcu: Defer rcu_tasks_kthread() creation till first call_rcu_tasks() > rcu: Make TASKS_RCU handle nohz_full= CPUs > rcu: Make rcu_tasks_kthread()'s GP-wait loop allow preemption > rcu: Remove redundant preempt_disable() from rcu_note_voluntary_context_switch() > rcu: Additional information on RCU-tasks stall-warning messages > rcu: Remove local_irq_disable() in rcu_preempt_note_context_switch() > rcu: Per-CPU operation cleanups to rcu_*_qs() functions > rcutorture: Add RCU-tasks tests to default rcutorture list > rcu: Fix attempt to avoid unsolicited offloading of callbacks > rcu: Rationalize kthread spawning > rcu: Create rcuo kthreads only for onlined CPUs > rcu: Eliminate redundant rcu_sysidle_state variable > rcu: Don't track sysidle state if no nohz_full= CPUs > rcu: Avoid misordering in __call_rcu_nocb_enqueue() > rcu: Handle NOCB callbacks from irq-disabled idle code > rcu: Avoid misordering in nocb_leader_wait() > Merge branches 'doc.2014.09.07a', 'fixes.2014.09.10a', 'nocb-nohz.2014.09.16b' and 'torture.2014.09.07a' into HEAD > Merge branch 'rcu-tasks.2014.09.10a' into HEAD > locktorture: Make torture scripting account for new _runnable name > locktorture: Add test scenario for mutex_lock > locktorture: Add test scenario for rwsem_lock > rcutorture: Rename rcutorture_runnable parameter > locktorture: Document boot/module parameters > rcu: Eliminate deadlock between CPU hotplug and expedited grace periods > > Pranith Kumar (18): > rcu: Remove remaining read-modify-write ACCESS_ONCE() calls > rcu: Fix sparse warning about rcu_batches_completed_preempt() being non-static > rcu: Use bool type for return value in rcu_is_watching() > rcu: Return bool type for rcu_try_advance_all_cbs() > rcu: Return bool type in rcu_lockdep_current_cpu_online() > rcu: Use true/false instead of 1/0 for a bool type > rcu: Update tiny.c references to tree.c > rcu: Remove stale comment in tree.c > rcu: Use rcu_gp_kthread_wake() to wake up grace period kthreads > rcutorture: Fix a sparse warning by marking boost_mutex static > rcutorture: Use bash shell for all the test scripts > rcutorture: Set executable bit and drop bash from Usage > rcu: Check the return value of zalloc_cpumask_var() > rcu: Use true/false for return in __call_rcu_nocb() > rcu: Use true/false for return in rcu_nocb_adopt_orphan_cbs() > rcu: Use false for return in __call_rcu_nocb() > rcu: Return false instead of 0 in rcu_nocb_adopt_orphan_cbs() > rcu: Check for have_rcu_nocb_mask instead of rcu_nocb_mask > > Steven Rostedt (1): > rcu: Export RCU-tasks APIs to GPL modules > > Documentation/RCU/stallwarn.txt | 33 +- > Documentation/kernel-parameters.txt | 68 +++- > Documentation/locking/locktorture.txt | 142 ++++++++ > Documentation/memory-barriers.txt | 128 +++---- > fs/file.c | 2 +- > include/linux/cpu.h | 2 + > include/linux/init_task.h | 12 +- > include/linux/lockdep.h | 1 + > include/linux/rcupdate.h | 106 +++--- > include/linux/rcutiny.h | 2 +- > include/linux/sched.h | 39 +- > include/linux/torture.h | 5 +- > include/trace/events/rcu.h | 3 + > init/Kconfig | 14 +- > init/main.c | 1 + > kernel/cpu.c | 16 +- > kernel/exit.c | 3 + > kernel/locking/locktorture.c | 392 ++++++++++++++++---- > kernel/rcu/rcutorture.c | 278 ++++++++++---- > kernel/rcu/tiny.c | 20 +- > kernel/rcu/tree.c | 115 +++--- > kernel/rcu/tree.h | 18 +- > kernel/rcu/tree_plugin.h | 404 ++++++++++++++------- > kernel/rcu/update.c | 345 +++++++++++++++++- > kernel/softirq.c | 2 +- > kernel/sysctl.c | 9 - > kernel/torture.c | 32 +- > mm/mlock.c | 2 +- > .../selftests/rcutorture/bin/config2frag.sh | 4 +- > .../selftests/rcutorture/bin/configcheck.sh | 4 +- > .../testing/selftests/rcutorture/bin/configinit.sh | 4 +- > .../testing/selftests/rcutorture/bin/functions.sh | 20 + > .../testing/selftests/rcutorture/bin/kvm-build.sh | 2 +- > .../selftests/rcutorture/bin/kvm-recheck-lock.sh | 2 +- > .../selftests/rcutorture/bin/kvm-recheck-rcu.sh | 2 +- > .../selftests/rcutorture/bin/kvm-recheck.sh | 2 +- > .../selftests/rcutorture/bin/kvm-test-1-run.sh | 5 +- > tools/testing/selftests/rcutorture/bin/kvm.sh | 6 +- > .../selftests/rcutorture/bin/parse-build.sh | 5 +- > .../selftests/rcutorture/bin/parse-console.sh | 9 +- > .../selftests/rcutorture/bin/parse-torture.sh | 5 +- > .../selftests/rcutorture/configs/lock/CFLIST | 2 + > .../selftests/rcutorture/configs/lock/LOCK02 | 6 + > .../selftests/rcutorture/configs/lock/LOCK02.boot | 1 + > .../selftests/rcutorture/configs/lock/LOCK03 | 6 + > .../selftests/rcutorture/configs/lock/LOCK03.boot | 1 + > .../rcutorture/configs/lock/ver_functions.sh | 2 +- > .../selftests/rcutorture/configs/rcu/CFLIST | 3 + > .../selftests/rcutorture/configs/rcu/TASKS01 | 9 + > .../selftests/rcutorture/configs/rcu/TASKS01.boot | 1 + > .../selftests/rcutorture/configs/rcu/TASKS02 | 5 + > .../selftests/rcutorture/configs/rcu/TASKS02.boot | 1 + > .../selftests/rcutorture/configs/rcu/TASKS03 | 13 + > .../selftests/rcutorture/configs/rcu/TASKS03.boot | 1 + > .../selftests/rcutorture/configs/rcu/TREE01 | 4 +- > .../selftests/rcutorture/configs/rcu/TREE01.boot | 2 +- > .../selftests/rcutorture/configs/rcu/TREE07 | 3 +- > .../selftests/rcutorture/configs/rcu/TREE07.boot | 1 + > .../rcutorture/configs/rcu/ver_functions.sh | 2 +- > tools/testing/selftests/rcutorture/doc/initrd.txt | 1 + > 60 files changed, 1798 insertions(+), 530 deletions(-) > create mode 100644 Documentation/locking/locktorture.txt > mode change 100644 => 100755 tools/testing/selftests/rcutorture/bin/config2frag.sh > mode change 100644 => 100755 tools/testing/selftests/rcutorture/bin/kvm.sh > create mode 100644 tools/testing/selftests/rcutorture/configs/lock/LOCK02 > create mode 100644 tools/testing/selftests/rcutorture/configs/lock/LOCK02.boot > create mode 100644 tools/testing/selftests/rcutorture/configs/lock/LOCK03 > create mode 100644 tools/testing/selftests/rcutorture/configs/lock/LOCK03.boot > create mode 100644 tools/testing/selftests/rcutorture/configs/rcu/TASKS01 > create mode 100644 tools/testing/selftests/rcutorture/configs/rcu/TASKS01.boot > create mode 100644 tools/testing/selftests/rcutorture/configs/rcu/TASKS02 > create mode 100644 tools/testing/selftests/rcutorture/configs/rcu/TASKS02.boot > create mode 100644 tools/testing/selftests/rcutorture/configs/rcu/TASKS03 > create mode 100644 tools/testing/selftests/rcutorture/configs/rcu/TASKS03.boot > create mode 100644 tools/testing/selftests/rcutorture/configs/rcu/TREE07.boot > Pulled into tip:core/rcu, thanks Paul! Ingo -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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