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Message-ID: <20141120075942.GA4423@gmail.com> Date: Thu, 20 Nov 2014 08:59:42 +0100 From: Ingo Molnar <mingo@...nel.org> To: "Paul E. McKenney" <paulmck@...ux.vnet.ibm.com> Cc: linux-kernel@...r.kernel.org, cl@...ux.com, bobby.prani@...il.com, oleg@...hat.com, stefan.hengelein@....d, clark.williams@...il.com, Peter Zijlstra <a.p.zijlstra@...llo.nl>, Thomas Gleixner <tglx@...utronix.de> Subject: Re: [GIT PULL rcu/next] RCU commits for 3.19 * Paul E. McKenney <paulmck@...ux.vnet.ibm.com> wrote: > Hello, Ingo, > > The changes in this series include: > > 1. Streamline RCU's use of per-CPU variables, shifting from "cpu" > arguments to functions to "this_"-style per-CPU variable accessors. > These were posted to LKML at https://lkml.org/lkml/2014/10/28/1130. > > 2. Documentation updates. These were posted to LKML at > https://lkml.org/lkml/2014/10/28/1145. > > 3. Miscellaneous fixes. These were posted to LKML at > https://lkml.org/lkml/2014/10/28/1161. > > 4. Signal-handling RCU updates. These were posted to LKML at > https://lkml.org/lkml/2014/10/28/1172. > > 5. Real-time updates. These were posted to LKML at > ttps://lkml.org/lkml/2014/10/28/1181. > > 6. Torture-test updates. These were posted to LKML at > https://lkml.org/lkml/2014/10/28/1204. > > Note that a few commits posted to LKML have been deferred, in particular, > there is some possibility that the DEC Alpha guys will make the compiler > changes needed to allow pre-EV56 CPUs to safely access chars and shorts. > > 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 9ea6c5885681e3d9ce9844ba9dc57371a5cfc6d2: > > Merge branches 'torture.2014.11.03a', 'cpu.2014.11.03a', 'doc.2014.11.13a', 'fixes.2014.11.13a', 'signal.2014.10.29a' and 'rt.2014.10.29a' into HEAD (2014-11-13 10:39:04 -0800) > > ---------------------------------------------------------------- > > Christoph Lameter (1): > rcu: Remove rcu_dynticks * parameters when they are always this_cpu_ptr(&rcu_dynticks) > > Clark Williams (1): > rcu: Unify boost and kthread priorities > > Oleg Nesterov (2): > signal: Document the RCU protection of ->sighand > rcu: More info about potential deadlocks with rcu_read_unlock() > > Paul E. McKenney (22): > rcu: Remove CONFIG_RCU_CPU_STALL_VERBOSE > rcu: Move RCU_BOOST variable declarations, eliminating #ifdef > rcu: Avoid IPIing idle CPUs from synchronize_sched_expedited() > signal: Exit RCU read-side critical section on each pass through loop > rcu: Kick rcuo kthreads after their CPU goes offline > rcu: Fix for rcuo online-time-creation reorganization bug > rcu: Use DEFINE_PER_CPU_SHARED_ALIGNED for rcu_data > rcu: Remove "cpu" argument to rcu_check_callbacks() > rcu: Remove "cpu" argument to rcu_pending() > rcu: Remove "cpu" argument to rcu_preempt_check_callbacks() > rcu: Remove "cpu" argument to rcu_note_context_switch() > rcu: Remove "cpu" argument to rcu_needs_cpu() > rcu: Remove "cpu" argument to rcu_prepare_for_idle() > rcu: Remove "cpu" argument to rcu_cleanup_after_idle() > cpu: Avoid puts_pending overflow > torture: Run Linux-kernel binary out of results directory > rcutorture: Fix rcu_torture_cbflood() memory leak > documentation: Additional restriction for control dependencies > documentation: Add atomic_long_t to atomic_ops.txt > rcu: Optimize cond_resched_rcu_qs() > rcu: Fix FIXME in rcu_tasks_kthread() > Merge branches 'torture.2014.11.03a', 'cpu.2014.11.03a', 'doc.2014.11.13a', 'fixes.2014.11.13a', 'signal.2014.10.29a' and 'rt.2014.10.29a' into HEAD > > Pranith Kumar (8): > rcu: Remove redundant TREE_PREEMPT_RCU config option > rcutorture: Add early boot self tests > rcutorture: Enable RCU self test in configs > rcutorture: Remove stale test configurations > rcutorture: Remove obsolete kversion param in kvm.sh > documentation: Document RCU self test boot params > documentation: memory-barriers.txt: Correct example for reorderings > rcu: Add sparse check for RCU_INIT_POINTER() > > Stefan Hengelein (1): > init/Kconfig: move RCU_NOCB_CPU dependencies to choice > > Documentation/RCU/rcu.txt | 4 +- > Documentation/RCU/stallwarn.txt | 14 +-- > Documentation/RCU/trace.txt | 4 +- > Documentation/RCU/whatisRCU.txt | 2 +- > Documentation/atomic_ops.txt | 12 ++- > Documentation/kernel-parameters.txt | 16 +++ > Documentation/memory-barriers.txt | 40 ++++++-- > include/linux/init_task.h | 2 +- > include/linux/rcupdate.h | 19 ++-- > include/linux/rcutiny.h | 2 +- > include/linux/rcutree.h | 6 +- > include/linux/sched.h | 4 +- > include/trace/events/rcu.h | 4 +- > init/Kconfig | 49 ++++----- > kernel/cpu.c | 19 ++-- > kernel/fork.c | 5 +- > kernel/rcu/Makefile | 2 +- > kernel/rcu/rcu.h | 2 + > kernel/rcu/rcutorture.c | 1 + > kernel/rcu/tiny.c | 6 +- > kernel/rcu/tree.c | 97 ++++++++++-------- > kernel/rcu/tree.h | 22 ++-- > kernel/rcu/tree_plugin.h | 111 +++++++++++---------- > kernel/rcu/update.c | 89 ++++++++++++++++- > kernel/sched/core.c | 2 +- > kernel/signal.c | 42 ++++---- > kernel/softirq.c | 2 +- > kernel/time/tick-sched.c | 2 +- > kernel/time/timer.c | 3 +- > lib/Kconfig.debug | 14 +-- > .../selftests/rcutorture/bin/kvm-test-1-run.sh | 6 +- > tools/testing/selftests/rcutorture/bin/kvm.sh | 19 +--- > .../selftests/rcutorture/configs/rcu/TINY02 | 2 + > .../selftests/rcutorture/configs/rcu/TINY02.boot | 2 + > .../selftests/rcutorture/configs/rcu/TREE01 | 3 +- > .../selftests/rcutorture/configs/rcu/TREE02 | 3 +- > .../selftests/rcutorture/configs/rcu/TREE02-T | 3 +- > .../selftests/rcutorture/configs/rcu/TREE03 | 5 +- > .../selftests/rcutorture/configs/rcu/TREE04 | 1 - > .../selftests/rcutorture/configs/rcu/TREE05 | 1 - > .../selftests/rcutorture/configs/rcu/TREE05.boot | 1 + > .../selftests/rcutorture/configs/rcu/TREE06 | 1 - > .../selftests/rcutorture/configs/rcu/TREE06.boot | 3 + > .../selftests/rcutorture/configs/rcu/TREE07 | 1 - > .../selftests/rcutorture/configs/rcu/TREE08 | 5 +- > .../selftests/rcutorture/configs/rcu/TREE08-T | 3 +- > .../selftests/rcutorture/configs/rcu/TREE08.boot | 2 + > .../selftests/rcutorture/configs/rcu/TREE09 | 3 +- > .../selftests/rcutorture/configs/rcu/v0.0/CFLIST | 14 --- > .../configs/rcu/v0.0/N1-S-T-NH-SD-SMP-HP | 18 ---- > .../configs/rcu/v0.0/N2-2-t-nh-sd-SMP-hp | 20 ---- > .../configs/rcu/v0.0/N3-3-T-nh-SD-SMP-hp | 22 ---- > .../configs/rcu/v0.0/N4-A-t-NH-sd-SMP-HP | 18 ---- > .../configs/rcu/v0.0/N5-U-T-NH-sd-SMP-hp | 22 ---- > .../selftests/rcutorture/configs/rcu/v0.0/NT1-nh | 23 ----- > .../selftests/rcutorture/configs/rcu/v0.0/NT3-NH | 20 ---- > .../configs/rcu/v0.0/P1-S-T-NH-SD-SMP-HP | 19 ---- > .../configs/rcu/v0.0/P2-2-t-nh-sd-SMP-hp | 20 ---- > .../configs/rcu/v0.0/P3-3-T-nh-SD-SMP-hp | 20 ---- > .../configs/rcu/v0.0/P4-A-t-NH-sd-SMP-HP | 22 ---- > .../configs/rcu/v0.0/P5-U-T-NH-sd-SMP-hp | 27 ----- > .../selftests/rcutorture/configs/rcu/v0.0/PT1-nh | 23 ----- > .../selftests/rcutorture/configs/rcu/v0.0/PT2-NH | 22 ---- > .../rcutorture/configs/rcu/v0.0/ver_functions.sh | 33 ------ > .../selftests/rcutorture/configs/rcu/v3.12/CFLIST | 17 ---- > .../configs/rcu/v3.12/N1-S-T-NH-SD-SMP-HP | 19 ---- > .../configs/rcu/v3.12/N2-2-t-nh-sd-SMP-hp | 20 ---- > .../configs/rcu/v3.12/N3-3-T-nh-SD-SMP-hp | 22 ---- > .../configs/rcu/v3.12/N4-A-t-NH-sd-SMP-HP | 18 ---- > .../configs/rcu/v3.12/N5-U-T-NH-sd-SMP-hp | 22 ---- > .../configs/rcu/v3.12/N6---t-nh-SD-smp-hp | 19 ---- > .../configs/rcu/v3.12/N7-4-T-NH-SD-SMP-HP | 26 ----- > .../configs/rcu/v3.12/N8-2-T-NH-SD-SMP-HP | 22 ---- > .../selftests/rcutorture/configs/rcu/v3.12/NT1-nh | 23 ----- > .../selftests/rcutorture/configs/rcu/v3.12/NT3-NH | 20 ---- > .../configs/rcu/v3.12/P1-S-T-NH-SD-SMP-HP | 20 ---- > .../configs/rcu/v3.12/P2-2-t-nh-sd-SMP-hp | 20 ---- > .../configs/rcu/v3.12/P3-3-T-nh-SD-SMP-hp | 20 ---- > .../configs/rcu/v3.12/P4-A-t-NH-sd-SMP-HP | 22 ---- > .../configs/rcu/v3.12/P5-U-T-NH-sd-SMP-hp | 27 ----- > .../configs/rcu/v3.12/P6---t-nh-SD-smp-hp | 18 ---- > .../configs/rcu/v3.12/P7-4-T-NH-SD-SMP-HP | 30 ------ > .../configs/rcu/v3.12/P7-4-T-NH-SD-SMP-HP-all | 30 ------ > .../configs/rcu/v3.12/P7-4-T-NH-SD-SMP-HP-none | 30 ------ > .../configs/rcu/v3.12/P7-4-T-NH-SD-SMP-hp | 30 ------ > .../selftests/rcutorture/configs/rcu/v3.12/PT1-nh | 23 ----- > .../selftests/rcutorture/configs/rcu/v3.12/PT2-NH | 22 ---- > .../selftests/rcutorture/configs/rcu/v3.3/CFLIST | 14 --- > .../configs/rcu/v3.3/N1-S-T-NH-SD-SMP-HP | 19 ---- > .../configs/rcu/v3.3/N2-2-t-nh-sd-SMP-hp | 20 ---- > .../configs/rcu/v3.3/N3-3-T-nh-SD-SMP-hp | 22 ---- > .../configs/rcu/v3.3/N4-A-t-NH-sd-SMP-HP | 18 ---- > .../configs/rcu/v3.3/N5-U-T-NH-sd-SMP-hp | 22 ---- > .../selftests/rcutorture/configs/rcu/v3.3/NT1-nh | 23 ----- > .../selftests/rcutorture/configs/rcu/v3.3/NT3-NH | 20 ---- > .../configs/rcu/v3.3/P1-S-T-NH-SD-SMP-HP | 20 ---- > .../configs/rcu/v3.3/P2-2-t-nh-sd-SMP-hp | 20 ---- > .../configs/rcu/v3.3/P3-3-T-nh-SD-SMP-hp | 20 ---- > .../configs/rcu/v3.3/P4-A-t-NH-sd-SMP-HP | 22 ---- > .../configs/rcu/v3.3/P5-U-T-NH-sd-SMP-hp | 27 ----- > .../selftests/rcutorture/configs/rcu/v3.3/PT1-nh | 23 ----- > .../selftests/rcutorture/configs/rcu/v3.3/PT2-NH | 22 ---- > .../rcutorture/configs/rcu/v3.3/ver_functions.sh | 44 -------- > .../selftests/rcutorture/configs/rcu/v3.5/CFLIST | 14 --- > .../configs/rcu/v3.5/N1-S-T-NH-SD-SMP-HP | 19 ---- > .../configs/rcu/v3.5/N2-2-t-nh-sd-SMP-hp | 20 ---- > .../configs/rcu/v3.5/N3-3-T-nh-SD-SMP-hp | 22 ---- > .../configs/rcu/v3.5/N4-A-t-NH-sd-SMP-HP | 18 ---- > .../configs/rcu/v3.5/N5-U-T-NH-sd-SMP-hp | 22 ---- > .../selftests/rcutorture/configs/rcu/v3.5/NT1-nh | 23 ----- > .../selftests/rcutorture/configs/rcu/v3.5/NT3-NH | 20 ---- > .../configs/rcu/v3.5/P1-S-T-NH-SD-SMP-HP | 20 ---- > .../configs/rcu/v3.5/P2-2-t-nh-sd-SMP-hp | 20 ---- > .../configs/rcu/v3.5/P3-3-T-nh-SD-SMP-hp | 20 ---- > .../configs/rcu/v3.5/P4-A-t-NH-sd-SMP-HP | 22 ---- > .../configs/rcu/v3.5/P5-U-T-NH-sd-SMP-hp | 27 ----- > .../selftests/rcutorture/configs/rcu/v3.5/PT1-nh | 23 ----- > .../selftests/rcutorture/configs/rcu/v3.5/PT2-NH | 22 ---- > .../rcutorture/configs/rcu/v3.5/ver_functions.sh | 57 ----------- > .../testing/selftests/rcutorture/doc/TINY_RCU.txt | 2 +- > .../selftests/rcutorture/doc/TREE_RCU-kconfig.txt | 15 ++- > 121 files changed, 408 insertions(+), 1858 deletions(-) > create mode 100644 tools/testing/selftests/rcutorture/configs/rcu/TINY02.boot > create mode 100644 tools/testing/selftests/rcutorture/configs/rcu/TREE06.boot > delete mode 100644 tools/testing/selftests/rcutorture/configs/rcu/v0.0/CFLIST > delete mode 100644 tools/testing/selftests/rcutorture/configs/rcu/v0.0/N1-S-T-NH-SD-SMP-HP > delete mode 100644 tools/testing/selftests/rcutorture/configs/rcu/v0.0/N2-2-t-nh-sd-SMP-hp > delete mode 100644 tools/testing/selftests/rcutorture/configs/rcu/v0.0/N3-3-T-nh-SD-SMP-hp > delete mode 100644 tools/testing/selftests/rcutorture/configs/rcu/v0.0/N4-A-t-NH-sd-SMP-HP > delete mode 100644 tools/testing/selftests/rcutorture/configs/rcu/v0.0/N5-U-T-NH-sd-SMP-hp > delete mode 100644 tools/testing/selftests/rcutorture/configs/rcu/v0.0/NT1-nh > delete mode 100644 tools/testing/selftests/rcutorture/configs/rcu/v0.0/NT3-NH > delete mode 100644 tools/testing/selftests/rcutorture/configs/rcu/v0.0/P1-S-T-NH-SD-SMP-HP > delete mode 100644 tools/testing/selftests/rcutorture/configs/rcu/v0.0/P2-2-t-nh-sd-SMP-hp > delete mode 100644 tools/testing/selftests/rcutorture/configs/rcu/v0.0/P3-3-T-nh-SD-SMP-hp > delete mode 100644 tools/testing/selftests/rcutorture/configs/rcu/v0.0/P4-A-t-NH-sd-SMP-HP > delete mode 100644 tools/testing/selftests/rcutorture/configs/rcu/v0.0/P5-U-T-NH-sd-SMP-hp > delete mode 100644 tools/testing/selftests/rcutorture/configs/rcu/v0.0/PT1-nh > delete mode 100644 tools/testing/selftests/rcutorture/configs/rcu/v0.0/PT2-NH > delete mode 100644 tools/testing/selftests/rcutorture/configs/rcu/v0.0/ver_functions.sh > delete mode 100644 tools/testing/selftests/rcutorture/configs/rcu/v3.12/CFLIST > delete mode 100644 tools/testing/selftests/rcutorture/configs/rcu/v3.12/N1-S-T-NH-SD-SMP-HP > delete mode 100644 tools/testing/selftests/rcutorture/configs/rcu/v3.12/N2-2-t-nh-sd-SMP-hp > delete mode 100644 tools/testing/selftests/rcutorture/configs/rcu/v3.12/N3-3-T-nh-SD-SMP-hp > delete mode 100644 tools/testing/selftests/rcutorture/configs/rcu/v3.12/N4-A-t-NH-sd-SMP-HP > delete mode 100644 tools/testing/selftests/rcutorture/configs/rcu/v3.12/N5-U-T-NH-sd-SMP-hp > delete mode 100644 tools/testing/selftests/rcutorture/configs/rcu/v3.12/N6---t-nh-SD-smp-hp > delete mode 100644 tools/testing/selftests/rcutorture/configs/rcu/v3.12/N7-4-T-NH-SD-SMP-HP > delete mode 100644 tools/testing/selftests/rcutorture/configs/rcu/v3.12/N8-2-T-NH-SD-SMP-HP > delete mode 100644 tools/testing/selftests/rcutorture/configs/rcu/v3.12/NT1-nh > delete mode 100644 tools/testing/selftests/rcutorture/configs/rcu/v3.12/NT3-NH > delete mode 100644 tools/testing/selftests/rcutorture/configs/rcu/v3.12/P1-S-T-NH-SD-SMP-HP > delete mode 100644 tools/testing/selftests/rcutorture/configs/rcu/v3.12/P2-2-t-nh-sd-SMP-hp > delete mode 100644 tools/testing/selftests/rcutorture/configs/rcu/v3.12/P3-3-T-nh-SD-SMP-hp > delete mode 100644 tools/testing/selftests/rcutorture/configs/rcu/v3.12/P4-A-t-NH-sd-SMP-HP > delete mode 100644 tools/testing/selftests/rcutorture/configs/rcu/v3.12/P5-U-T-NH-sd-SMP-hp > delete mode 100644 tools/testing/selftests/rcutorture/configs/rcu/v3.12/P6---t-nh-SD-smp-hp > delete mode 100644 tools/testing/selftests/rcutorture/configs/rcu/v3.12/P7-4-T-NH-SD-SMP-HP > delete mode 100644 tools/testing/selftests/rcutorture/configs/rcu/v3.12/P7-4-T-NH-SD-SMP-HP-all > delete mode 100644 tools/testing/selftests/rcutorture/configs/rcu/v3.12/P7-4-T-NH-SD-SMP-HP-none > delete mode 100644 tools/testing/selftests/rcutorture/configs/rcu/v3.12/P7-4-T-NH-SD-SMP-hp > delete mode 100644 tools/testing/selftests/rcutorture/configs/rcu/v3.12/PT1-nh > delete mode 100644 tools/testing/selftests/rcutorture/configs/rcu/v3.12/PT2-NH > delete mode 100644 tools/testing/selftests/rcutorture/configs/rcu/v3.3/CFLIST > delete mode 100644 tools/testing/selftests/rcutorture/configs/rcu/v3.3/N1-S-T-NH-SD-SMP-HP > delete mode 100644 tools/testing/selftests/rcutorture/configs/rcu/v3.3/N2-2-t-nh-sd-SMP-hp > delete mode 100644 tools/testing/selftests/rcutorture/configs/rcu/v3.3/N3-3-T-nh-SD-SMP-hp > delete mode 100644 tools/testing/selftests/rcutorture/configs/rcu/v3.3/N4-A-t-NH-sd-SMP-HP > delete mode 100644 tools/testing/selftests/rcutorture/configs/rcu/v3.3/N5-U-T-NH-sd-SMP-hp > delete mode 100644 tools/testing/selftests/rcutorture/configs/rcu/v3.3/NT1-nh > delete mode 100644 tools/testing/selftests/rcutorture/configs/rcu/v3.3/NT3-NH > delete mode 100644 tools/testing/selftests/rcutorture/configs/rcu/v3.3/P1-S-T-NH-SD-SMP-HP > delete mode 100644 tools/testing/selftests/rcutorture/configs/rcu/v3.3/P2-2-t-nh-sd-SMP-hp > delete mode 100644 tools/testing/selftests/rcutorture/configs/rcu/v3.3/P3-3-T-nh-SD-SMP-hp > delete mode 100644 tools/testing/selftests/rcutorture/configs/rcu/v3.3/P4-A-t-NH-sd-SMP-HP > delete mode 100644 tools/testing/selftests/rcutorture/configs/rcu/v3.3/P5-U-T-NH-sd-SMP-hp > delete mode 100644 tools/testing/selftests/rcutorture/configs/rcu/v3.3/PT1-nh > delete mode 100644 tools/testing/selftests/rcutorture/configs/rcu/v3.3/PT2-NH > delete mode 100644 tools/testing/selftests/rcutorture/configs/rcu/v3.3/ver_functions.sh > delete mode 100644 tools/testing/selftests/rcutorture/configs/rcu/v3.5/CFLIST > delete mode 100644 tools/testing/selftests/rcutorture/configs/rcu/v3.5/N1-S-T-NH-SD-SMP-HP > delete mode 100644 tools/testing/selftests/rcutorture/configs/rcu/v3.5/N2-2-t-nh-sd-SMP-hp > delete mode 100644 tools/testing/selftests/rcutorture/configs/rcu/v3.5/N3-3-T-nh-SD-SMP-hp > delete mode 100644 tools/testing/selftests/rcutorture/configs/rcu/v3.5/N4-A-t-NH-sd-SMP-HP > delete mode 100644 tools/testing/selftests/rcutorture/configs/rcu/v3.5/N5-U-T-NH-sd-SMP-hp > delete mode 100644 tools/testing/selftests/rcutorture/configs/rcu/v3.5/NT1-nh > delete mode 100644 tools/testing/selftests/rcutorture/configs/rcu/v3.5/NT3-NH > delete mode 100644 tools/testing/selftests/rcutorture/configs/rcu/v3.5/P1-S-T-NH-SD-SMP-HP > delete mode 100644 tools/testing/selftests/rcutorture/configs/rcu/v3.5/P2-2-t-nh-sd-SMP-hp > delete mode 100644 tools/testing/selftests/rcutorture/configs/rcu/v3.5/P3-3-T-nh-SD-SMP-hp > delete mode 100644 tools/testing/selftests/rcutorture/configs/rcu/v3.5/P4-A-t-NH-sd-SMP-HP > delete mode 100644 tools/testing/selftests/rcutorture/configs/rcu/v3.5/P5-U-T-NH-sd-SMP-hp > delete mode 100644 tools/testing/selftests/rcutorture/configs/rcu/v3.5/PT1-nh > delete mode 100644 tools/testing/selftests/rcutorture/configs/rcu/v3.5/PT2-NH > delete mode 100644 tools/testing/selftests/rcutorture/configs/rcu/v3.5/ver_functions.sh Pulled into tip:core/rcu, 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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