[GIT PULL rcu/next] RCU commits for 4.14

From: Paul E. McKenney
Date: Fri Aug 18 2017 - 12:37:46 EST

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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@xxxxxxxxxxxxxxxxxx

2. Miscellaneous fixes.

http://lkml.kernel.org/r/20170724214425.GA9665@xxxxxxxxxxxxxxxxxx

(But note that I have dropped the cond_resched() commit.)

3. CPU-hotplug fixes.

http://lkml.kernel.org/r/20170724215139.GA10881@xxxxxxxxxxxxxxxxxx

4. Miscellaneous non-RCU fixes.

http://lkml.kernel.org/r/20170731225159.GA2674@xxxxxxxxxxxxxxxxxx
http://lkml.kernel.org/r/20170728204040.568-1-mathieu.desnoyers@xxxxxxxxxxxx

5. Removal of spin_unlock_wait().

http://lkml.kernel.org/r/20170731225754.GB2674@xxxxxxxxxxxxxxxxxx
http://lkml.kernel.org/r/20170811201247.GH3730@xxxxxxxxxxxxxxxxxx

6. SRCU updates.

http://lkml.kernel.org/r/20170724221511.GA15085@xxxxxxxxxxxxxxxxxx

7. Torture-test updates.

http://lkml.kernel.org/r/20170724222326.GA15933@xxxxxxxxxxxxxxxxxx

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

Next message: Doug Ledford: "Re: [PATCH] infiniband: avoid overflow warning"
Previous message: Tim Chen: "Re: [PATCH 1/2] sched/wait: Break up long wake list walk"
Next in thread: Ingo Molnar: "Re: [GIT PULL rcu/next] RCU commits for 4.14"
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