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Message-ID: <20170821074716.ilewafhpq47rcq2x@gmail.com>
Date: Mon, 21 Aug 2017 09:47:16 +0200
From: Ingo Molnar <mingo@...nel.org>
To: "Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>
Cc: mcgrof@...nel.org, mhiramat@...nel.org, peterz@...radead.org,
joe@...ches.com, tj@...nel.org, mathieu.desnoyers@...icios.com,
manfred@...orfullife.com, oleg@...hat.com,
linux-kernel@...r.kernel.org, linux-arch@...r.kernel.org
Subject: Re: [GIT PULL rcu/next] RCU commits for 4.14
* Paul E. McKenney <paulmck@...ux.vnet.ibm.com> wrote:
> Hello, Ingo,
>
> Back to the usual branched format! ;-)
>
> This pull request contains the following changes:
>
> 1. Documentation updates.
>
> http://lkml.kernel.org/r/20170724213605.GA8766@linux.vnet.ibm.com
>
> 2. Miscellaneous fixes.
>
> http://lkml.kernel.org/r/20170724214425.GA9665@linux.vnet.ibm.com
>
> (But note that I have dropped the cond_resched() commit.)
>
> 3. CPU-hotplug fixes.
>
> http://lkml.kernel.org/r/20170724215139.GA10881@linux.vnet.ibm.com
>
> 4. Miscellaneous non-RCU fixes.
>
> http://lkml.kernel.org/r/20170731225159.GA2674@linux.vnet.ibm.com
> http://lkml.kernel.org/r/20170728204040.568-1-mathieu.desnoyers@efficios.com
>
> 5. Removal of spin_unlock_wait().
>
> http://lkml.kernel.org/r/20170731225754.GB2674@linux.vnet.ibm.com
> http://lkml.kernel.org/r/20170811201247.GH3730@linux.vnet.ibm.com
>
> 6. SRCU updates.
>
> http://lkml.kernel.org/r/20170724221511.GA15085@linux.vnet.ibm.com
>
> 7. Torture-test updates.
>
> http://lkml.kernel.org/r/20170724222326.GA15933@linux.vnet.ibm.com
>
> 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 656e7c0c0a2e8d899f87fd7f081ea7a711146604:
>
> Merge branches 'doc.2017.08.17a', 'fixes.2017.08.17a', 'hotplug.2017.07.25b', 'misc.2017.08.17a', 'spin_unlock_wait_no.2017.08.17a', 'srcu.2017.07.27c' and 'torture.2017.07.24c' into HEAD (2017-08-17 08:10:04 -0700)
>
> ----------------------------------------------------------------
> Joe Perches (1):
> module: Fix pr_fmt() bug for header use of printk
>
> Luis R. Rodriguez (2):
> swait: Add idle variants which don't contribute to load average
> rcu: Use idle versions of swait to make idle-hack clear
>
> Manfred Spraul (1):
> net/netfilter/nf_conntrack_core: Fix net_conntrack_lock()
>
> Masami Hiramatsu (1):
> rcu/tracing: Set disable_rcu_irq_enter on rcu_eqs_exit()
>
> Mathieu Desnoyers (1):
> membarrier: Provide expedited private command
>
> Oleg Nesterov (1):
> task_work: Replace spin_unlock_wait() with lock/unlock pair
>
> Paul E. McKenney (55):
> documentation: Fix relation between nohz_full and rcu_nocbs
> init_task: Remove redundant INIT_TASK_RCU_TREE_PREEMPT() macro
> srcu: Move rcu_scheduler_starting() from Tiny RCU to Tiny SRCU
> rcutorture: Remove obsolete SRCU-C.boot
> srcu: Make process_srcu() be static
> rcutorture: Move SRCU status printing to SRCU implementations
> rcutorture: Print SRCU lock/unlock totals
> rcu: Remove CONFIG_TASKS_RCU ifdef from rcuperf.c
> rcutorture: Select CONFIG_PROVE_LOCKING for Tiny SRCU scenario
> torture: Add --kconfig argument to kvm.sh
> rcutorture: Don't wait for kernel when all builds fail
> rcutorture: Enable SRCU readers from timer handler
> rcutorture: Place event-traced strings into trace buffer
> rcutorture: Use nr_cpus rather than maxcpus to limit test size
> rcutorture: Add task's CPU for rcutorture writer stalls
> rcutorture: Eliminate unused ts_rem local from rcu_trace_clock_local()
> rcu: Add last-CPU to GP-kthread starvation messages
> rcutorture: Invoke call_rcu() from timer handler
> rcu: Use timer as backstop for NOCB deferred wakeups
> atomics: Revert addition of comment header to spin_unlock_wait()
> rcu: Migrate callbacks earlier in the CPU-offline timeline
> rcu: Make expedited GPs correctly handle hardware CPU insertion
> torture: Fix typo suppressing CPU-hotplug statistics
> rcu: Remove orphan/adopt event-tracing fields
> rcu: Check for NOCB CPUs and empty lists earlier in CB migration
> rcu: Make NOCB CPUs migrate CBs directly from outgoing CPU
> rcu: Advance outgoing CPU's callbacks before migrating them
> rcu: Eliminate rcu_state ->orphan_lock
> rcu: Advance callbacks after migration
> rcu: Localize rcu_state ->orphan_pend and ->orphan_done
> rcu: Remove unused RCU list functions
> rcu: Move callback-list warning to irq-disable region
> srcu: Provide ordering for CPU not involved in grace period
> sched: Replace spin_unlock_wait() with lock/unlock pair
> rcu: Drive TASKS_RCU directly off of PREEMPT
> rcu: Create reasonable API for do_exit() TASKS_RCU processing
> rcu: Add TPS() to event-traced strings
> rcu: Move rcu.h to new trivial-function style
> rcu: Add event tracing to ->gp_tasks update at GP start
> rcu: Add TPS() protection for _rcu_barrier_trace strings
> rcu: Add assertions verifying blocked-tasks list
> rcu: Add warning to rcu_idle_enter() for irqs enabled
> rcu: Remove exports from rcu_idle_exit() and rcu_idle_enter()
> doc: Update RCU documentation
> doc: Update memory-barriers.txt for read-to-write dependencies
> doc: Add RCU files to docbook-generation files
> doc: No longer allowed to use rcu_dereference on non-pointers
> doc: Set down RCU's scheduling-clock-interrupt needs
> completion: Replace spin_unlock_wait() with lock/unlock pair
> exit: Replace spin_unlock_wait() with lock/unlock pair
> ipc: Replace spin_unlock_wait() with lock/unlock pair
> drivers/ata: Replace spin_unlock_wait() with lock/unlock pair
> locking: Remove spin_unlock_wait() generic definitions
> arch: Remove spin_unlock_wait() arch-specific definitions
> Merge branches 'doc.2017.08.17a', 'fixes.2017.08.17a', 'hotplug.2017.07.25b', 'misc.2017.08.17a', 'spin_unlock_wait_no.2017.08.17a', 'srcu.2017.07.27c' and 'torture.2017.07.24c' into HEAD
>
> Peter Zijlstra (Intel) (1):
> rcu: Make rcu_idle_enter() rely on callers disabling irqs
>
> Tejun Heo (1):
> sched: Allow migrating kthreads into online but inactive CPUs
>
> .../RCU/Design/Requirements/Requirements.html | 130 +++++++++++
> Documentation/RCU/checklist.txt | 121 +++++++----
> Documentation/RCU/rcu.txt | 9 +-
> Documentation/RCU/rcu_dereference.txt | 61 ++----
> Documentation/RCU/rcubarrier.txt | 5 +
> Documentation/RCU/torture.txt | 20 +-
> Documentation/RCU/whatisRCU.txt | 5 +-
> Documentation/admin-guide/kernel-parameters.txt | 7 +-
> Documentation/core-api/kernel-api.rst | 49 +++++
> Documentation/memory-barriers.txt | 41 ++--
> MAINTAINERS | 2 +-
> arch/alpha/include/asm/spinlock.h | 5 -
> arch/arc/include/asm/spinlock.h | 5 -
> arch/arm/include/asm/spinlock.h | 16 --
> arch/arm64/include/asm/spinlock.h | 58 +----
> arch/arm64/kernel/process.c | 2 +
> arch/blackfin/include/asm/spinlock.h | 5 -
> arch/blackfin/kernel/module.c | 39 ++--
> arch/hexagon/include/asm/spinlock.h | 5 -
> arch/ia64/include/asm/spinlock.h | 21 --
> arch/m32r/include/asm/spinlock.h | 5 -
> arch/metag/include/asm/spinlock.h | 5 -
> arch/mn10300/include/asm/spinlock.h | 5 -
> arch/parisc/include/asm/spinlock.h | 7 -
> arch/powerpc/include/asm/spinlock.h | 33 ---
> arch/s390/include/asm/spinlock.h | 7 -
> arch/sh/include/asm/spinlock-cas.h | 5 -
> arch/sh/include/asm/spinlock-llsc.h | 5 -
> arch/sparc/include/asm/spinlock_32.h | 5 -
> arch/tile/include/asm/spinlock_32.h | 2 -
> arch/tile/include/asm/spinlock_64.h | 2 -
> arch/tile/lib/spinlock_32.c | 23 --
> arch/tile/lib/spinlock_64.c | 22 --
> arch/xtensa/include/asm/spinlock.h | 5 -
> drivers/ata/libata-eh.c | 8 +-
> include/asm-generic/qspinlock.h | 14 --
> include/linux/init_task.h | 8 +-
> include/linux/rcupdate.h | 15 +-
> include/linux/rcutiny.h | 8 +-
> include/linux/sched.h | 5 +-
> include/linux/spinlock.h | 31 ---
> include/linux/spinlock_up.h | 6 -
> include/linux/srcutiny.h | 13 ++
> include/linux/srcutree.h | 3 +-
> include/linux/swait.h | 55 +++++
> include/trace/events/rcu.h | 7 +-
> include/uapi/linux/membarrier.h | 23 +-
> ipc/sem.c | 3 +-
> kernel/Makefile | 1 -
> kernel/cpu.c | 1 +
> kernel/exit.c | 10 +-
> kernel/locking/qspinlock.c | 117 ----------
> kernel/membarrier.c | 70 ------
> kernel/rcu/Kconfig | 3 +-
> kernel/rcu/rcu.h | 128 ++---------
> kernel/rcu/rcu_segcblist.c | 108 +++-------
> kernel/rcu/rcu_segcblist.h | 28 +--
> kernel/rcu/rcuperf.c | 17 +-
> kernel/rcu/rcutorture.c | 83 +++----
> kernel/rcu/srcutiny.c | 8 +
> kernel/rcu/srcutree.c | 50 ++++-
> kernel/rcu/tiny.c | 2 -
> kernel/rcu/tiny_plugin.h | 47 ----
> kernel/rcu/tree.c | 213 ++++++++----------
> kernel/rcu/tree.h | 15 +-
> kernel/rcu/tree_exp.h | 2 +-
> kernel/rcu/tree_plugin.h | 238 ++++++++++++---------
> kernel/rcu/update.c | 18 +-
> kernel/sched/Makefile | 1 +
> kernel/sched/completion.c | 11 +-
> kernel/sched/core.c | 38 +++-
> kernel/sched/membarrier.c | 152 +++++++++++++
> kernel/task_work.c | 8 +-
> kernel/torture.c | 2 +-
> net/netfilter/nf_conntrack_core.c | 52 +++--
> .../selftests/rcutorture/bin/config_override.sh | 61 ++++++
> .../testing/selftests/rcutorture/bin/functions.sh | 27 ++-
> .../testing/selftests/rcutorture/bin/kvm-build.sh | 11 +-
> .../selftests/rcutorture/bin/kvm-test-1-run.sh | 58 ++---
> tools/testing/selftests/rcutorture/bin/kvm.sh | 34 ++-
> .../selftests/rcutorture/configs/rcu/BUSTED.boot | 2 +-
> .../selftests/rcutorture/configs/rcu/SRCU-C.boot | 1 -
> .../selftests/rcutorture/configs/rcu/SRCU-u | 3 +-
> .../selftests/rcutorture/configs/rcu/TREE01.boot | 2 +-
> .../selftests/rcutorture/doc/TREE_RCU-kconfig.txt | 2 +-
> 85 files changed, 1237 insertions(+), 1323 deletions(-)
> delete mode 100644 kernel/membarrier.c
> delete mode 100644 kernel/rcu/tiny_plugin.h
> create mode 100644 kernel/sched/membarrier.c
> create mode 100755 tools/testing/selftests/rcutorture/bin/config_override.sh
> delete mode 100644 tools/testing/selftests/rcutorture/configs/rcu/SRCU-C.boot
Pulled, thanks a lot Paul!
Ingo
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