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Message-ID: <20150812101458.GA7036@gmail.com> Date: Wed, 12 Aug 2015 12:14:58 +0200 From: Ingo Molnar <mingo@...nel.org> To: "Paul E. McKenney" <paulmck@...ux.vnet.ibm.com> Cc: agordeev@...hat.com, ast@...mgrid.com, dvlasenk@...hat.com, jiangshanlai@...il.com, der.herr@...r.at, peterz@...radead.org, linux-kernel@...r.kernel.org Subject: Re: [GIT PULL rcu/next] RCU commits for 4.3 * Paul E. McKenney <paulmck@...ux.vnet.ibm.com> wrote: > Hello, Ingo, > > The changes in this series include the following: > > 1. Miscellaneous fixes. These were posted to LKML at > https://lkml.org/lkml/2015/7/17/855. > > 2. The combination of tree geometry-initialization simplifications > and OS-jitter-reduction changes to expedited grace periods. > These two are stacked due to the large number of conflicts > that would otherwise result. These were posted to LKML > at https://lkml.org/lkml/2015/7/17/873 (initialization > simplifications) and https://lkml.org/lkml/2015/7/17/907 (OS > jitter reduction). With one addition, a temporary commit to > silence a lockdep false positive. Additional changes to the > expedited grace-period primitives (queued for 4.4) remove the > cause of this false positive, and therefore include a revert of > this temporary commit. > > 3. Documentation updates. These were posted to LKML at > https://lkml.org/lkml/2015/7/17/921. > > 4. Torture-test updates. These were posted to LKML at > https://lkml.org/lkml/2015/7/17/939. > > All of these changes have been subjected to 0day Test Robot and -next > testing, and are available in the git repository at: > > git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu.git for-mingo > > for you to fetch changes up to 3dbe43f6fba9f2a0e46e371733575a45704c22ab: > > Merge branches 'doc.2015.07.15a' and 'torture.2015.07.15a' into HEAD (2015-08-04 08:42:02 -0700) > > ---------------------------------------------------------------- > > Alexander Gordeev (10): > rcu: Panic if RCU tree can not accommodate all CPUs > rcu: Remove superfluous local variable in rcu_init_geometry() > rcu: Cleanup rcu_init_geometry() code and arithmetics > rcu: Simplify rcu_init_geometry() capacity arithmetics > rcu: Limit rcu_state::levelcnt[] to RCU_NUM_LVLS items > rcu: Limit rcu_capacity[] size to RCU_NUM_LVLS items > rcu: Remove unnecessary fields from rcu_state structure > rcu: Limit count of static data to the number of RCU levels > rcu: Simplify arithmetic to calculate number of RCU nodes > rcu: Shut up bogus gcc array bounds warning > > Alexei Starovoitov (1): > rcu: Make rcu_is_watching() really notrace > > Denys Vlasenko (1): > rcu: Deinline rcu_read_lock_sched_held() if DEBUG_LOCK_ALLOC > > Lai Jiangshan (1): > rcu: Update MAINTAINERS entry > > Nicholas Mc Guire (1): > rcu: Change return type to bool > > Paul E. McKenney (44): > rcu: Drop RCU_USER_QS in favor of NO_HZ_FULL > documentation: Bring rcutorture parameters up to date > documentation: Fix spelling of "operators" > documentation: Fix variable-name typo in memory-barriers.txt > documentation: Replace ACCESS_ONCE() by READ_ONCE() and WRITE_ONCE() > doc: Call out smp_mb__after_unlock_lock() transitivity > rcu: Provide more diagnostics for stalled GP kthread > rcutorture: Better bounds checking for n_barrier_cbs > rcutorture: Check nfakewriters parameter > rcutorture: Bounds-check rcutorture.shuffle_interval > rcutorture: Fix rcu_torture_cbflood() for callback-free RCU > rcutorture: Add RCU-tasks qualifier to dereference > rcutorture: Enable lockdep-RCU on TASKS01 > rcu: Reset rcu_fanout_leaf if out of bounds > rcu: Stop disabling CPU hotplug in synchronize_rcu_expedited() > rcu: Remove CONFIG_RCU_CPU_STALL_INFO > rcu: Rework synchronize_sched_expedited() counter handling > rcu: Get rid of synchronize_sched_expedited()'s polling loop > rcu: Abstract sequence counting from synchronize_sched_expedited() > rcu: Make synchronize_rcu_expedited() use sequence-counter scheme > rcu: Abstract funnel locking from synchronize_sched_expedited() > rcu: Fix synchronize_sched_expedited() type error for "s" > rcu: Use funnel locking for synchronize_rcu_expedited()'s polling loop > rcu: Apply rcu_seq operations to _rcu_barrier() > rcu: Consolidate last open-coded expedited memory barrier > rcu: Extend expedited funnel locking to rcu_data structure > rcu: Add stall warnings to synchronize_sched_expedited() > documentation: Describe new expedited stall warnings > rcu: Pull out wait_event*() condition into helper function > rcu: Rename RCU_GP_DONE_FQS to RCU_GP_DOING_FQS > rcu: Add fastpath bypassing funnel locking > rcu: Add RCU-sched flavors of get-state and cond-sync > rcu: Hide RCU_NOCB_CPU behind RCU_EXPERT > rcu: Fix obsolete priority-boosting comment > rcu: Create a synchronize_rcu_mult() > cpu: Wait for RCU grace periods concurrently > rcu: Rename rcu_lockdep_assert() to RCU_LOCKDEP_WARN() > rcu: Fix backwards RCU_LOCKDEP_WARN() in synchronize_rcu_tasks() > rcu: Clarify CONFIG_RCU_EQS_DEBUG help text > scripts: Make checkpatch.pl warn on expedited RCU grace periods > rcu: Don't disable CPU hotplug during OOM notifiers > rcu: Silence lockdep false positive for expedited grace periods > Merge branches 'fixes.2015.07.22a' and 'initexp.2015.08.04a' into HEAD > Merge branches 'doc.2015.07.15a' and 'torture.2015.07.15a' into HEAD > > Peter Zijlstra (3): > rcu: Switch synchronize_sched_expedited() to stop_one_cpu() > rcu: Make expedited GP CPU stoppage asynchronous > rcu: Use WRITE_ONCE in RCU_INIT_POINTER > > Documentation/RCU/rcu_dereference.txt | 2 +- > Documentation/RCU/stallwarn.txt | 29 +- > Documentation/RCU/trace.txt | 36 +- > Documentation/RCU/whatisRCU.txt | 2 +- > Documentation/kernel-parameters.txt | 35 +- > Documentation/memory-barriers.txt | 359 +++++------ > MAINTAINERS | 6 +- > arch/x86/kernel/cpu/mcheck/mce.c | 6 +- > arch/x86/kernel/traps.c | 2 +- > drivers/base/power/opp.c | 4 +- > include/linux/fdtable.h | 4 +- > include/linux/rcupdate.h | 144 +++-- > include/linux/rcutiny.h | 10 + > include/linux/rcutree.h | 2 + > include/linux/types.h | 3 + > include/trace/events/rcu.h | 1 - > init/Kconfig | 10 +- > kernel/cgroup.c | 4 +- > kernel/cpu.c | 10 +- > kernel/pid.c | 5 +- > kernel/rcu/rcutorture.c | 42 +- > kernel/rcu/srcu.c | 15 +- > kernel/rcu/tiny.c | 8 +- > kernel/rcu/tree.c | 681 ++++++++++++--------- > kernel/rcu/tree.h | 84 ++- > kernel/rcu/tree_plugin.h | 130 +--- > kernel/rcu/tree_trace.c | 19 +- > kernel/rcu/update.c | 90 ++- > kernel/sched/core.c | 8 +- > kernel/time/Kconfig | 2 - > kernel/workqueue.c | 20 +- > lib/Kconfig.debug | 16 +- > scripts/checkpatch.pl | 19 + > security/device_cgroup.c | 6 +- > .../selftests/rcutorture/configs/rcu/TASKS01 | 4 +- > .../selftests/rcutorture/configs/rcu/TREE01 | 1 - > .../selftests/rcutorture/configs/rcu/TREE02 | 1 - > .../selftests/rcutorture/configs/rcu/TREE02-T | 1 - > .../selftests/rcutorture/configs/rcu/TREE03 | 1 - > .../selftests/rcutorture/configs/rcu/TREE04 | 1 - > .../selftests/rcutorture/configs/rcu/TREE05 | 1 - > .../selftests/rcutorture/configs/rcu/TREE06 | 1 - > .../selftests/rcutorture/configs/rcu/TREE07 | 1 - > .../selftests/rcutorture/configs/rcu/TREE08 | 1 - > .../selftests/rcutorture/configs/rcu/TREE08-T | 1 - > .../selftests/rcutorture/configs/rcu/TREE09 | 1 - > .../selftests/rcutorture/doc/TREE_RCU-kconfig.txt | 1 - > 47 files changed, 989 insertions(+), 841 deletions(-) Pulled, thanks a lot 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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