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Date:   Mon, 11 Feb 2019 12:12:08 -0800
From:   "Paul E. McKenney" <>
Subject: [GIT PULL rcu/next] RCU commits for 5.1

Hello, Ingo,

This pull request contains the following changes:

1.	Additional cleanups after RCU flavor consolidation.

2.	Grace-period forward-progress cleanups and improvements.

3.	Documentation updates.

4.	Miscellaneous fixes.

5.	spin_is_locked() conversions to lockdep.

6.	SPDX changes to RCU source and header files.

7.	SRCU updates.

8.	Torture-test updates, including nolibc updates and moving
	nolibc to tools/include.

All of these changes have been subjected to 0day Test Robot and -next
testing, and are available in the Git repository at:

  git:// e7ffb4eb9a6d89678e7f62461737899f88dab64e

for you to fetch changes up to e7ffb4eb9a6d89678e7f62461737899f88dab64e:

  Merge branches 'doc.2019.01.26a', 'fixes.2019.01.26a', 'sil.2019.01.26a', 'spdx.2019.02.09a', 'srcu.2019.01.26a' and 'torture.2019.01.26a' into HEAD (2019-02-09 08:47:52 -0800)

Note that the diffstat output omits the addition of tree_stall.h, so is
overly optimistic.  :-/

Joel Fernandes (Google) (1):
      rcu: Add sparse check to rcu_assign_pointer()

Junchang Wang (2):
      doc: Fix outdated links
      RCU/torture.txt: Remove section MODULE PARAMETERS

Paul E. McKenney (59):
      sched: Replace call_rcu_sched() with call_rcu()
      sched: Replace synchronize_sched() with synchronize_rcu()
      rcu: Rename and comment changes due to only one rcuo kthread per CPU
      rcu: Make expedited IPI handler return after handling critical section
      rcu: Inline force_quiescent_state() into rcu_force_quiescent_state()
      rcu: Eliminate RCU_BH_FLAVOR and RCU_SCHED_FLAVOR
      rcu: Inline rcu_kthread_do_work() into its sole remaining caller
      rcu: Determine expedited-GP IPI handler at build time
      rcu: Consolidate PREEMPT and !PREEMPT synchronize_rcu_expedited()
      rcu: Consolidate PREEMPT and !PREEMPT synchronize_rcu()
      rcu: Inline _synchronize_rcu_expedited() into synchronize_rcu_expedited()
      rcu: Discard separate per-CPU callback counts
      rcu: Remove wrapper definitions for obsolete RCU update functions
      rcu: Accommodate zero jiffies_till_first_fqs and kthread kicking
      rcu: Move rcu_cpu_kthread_task to rcu_data structure
      rcu: Move rcu_cpu_kthread_status to rcu_data structure
      rcu: Remove unused rcu_cpu_kthread_loops per-CPU variable
      rcu: Move rcu_cpu_has_work to rcu_data structure
      rcu: Remove unused rcu_cpu_kthread_cpu per-CPU variable
      rcu: Update NOCB comments
      rcu: Improve diagnostics for failed RCU grace-period start
      rcu: Protect rcu_check_gp_kthread_starvation() access to ->gp_flags
      rcu: Add sysrq rcu_node-dump capability
      Merge branches 'consolidate.2019.01.26a' and 'fwd.2019.01.26a' into HEAD
      doc: Now jiffies_till_sched_qs solicits help from cond_resched()
      doc: CPU-hotplug notifiers cannot invoke synchronize_srcu() or srcu_barrier()
      rcu: Docbook for rcu_head_init() and rcu_head_after_call_rcu()
      rcu: Rename rcu_check_callbacks() to rcu_sched_clock_irq()
      rcu: Rename rcu_process_callbacks() to rcu_core() for Tree RCU
      rcu: Remove preemption disabling from expedited CPU selection
      rcu: Repair rcu_nmi_exit() docbook header
      rcu: Fix obsolete DYNTICK_IRQ_NONIDLE comment
      include/asm-generic: Remove spin_is_locked() comment
      virt/kvm: Replace spin_is_locked() with lockdep
      srcu: Check for invalid idx argument in srcu_read_unlock()
      rcutorture: Record grace periods in forward-progress histogram
      torture: Explain and simplify odd "for" loop in
      rcutorture: Add grace period after CPU offline
      rcuperf: Stop abusing IS_ENABLED()
      rcu/rcu.h: Convert to SPDX license identifier
      rcu/rcuperf: Convert to SPDX license identifier
      rcu/rcu_segcblist: Convert to SPDX license identifier
      rcu/rcutorture: Convert to SPDX license identifier
      rcu/srcu: Convert to SPDX license identifier
      rcu/sync: Convert to SPDX license identifier
      rcu/tiny: Convert to SPDX license identifier
      rcu/tree: Convert to SPDX license identifier
      rcu/update: Convert to SPDX license identifier
      linux/rcu_node_tree: Convert to SPDX license identifier
      linux/rcupdate: Convert to SPDX license identifier
      linux/rcu_segcblist: Convert to SPDX license identifier
      linux/rcu_sync: Convert to SPDX license identifier
      linux/rcutiny: Convert to SPDX license identifier
      linux/rcutree: Convert to SPDX license identifier
      linux/srcu: Convert to SPDX license identifier
      torture: Convert to SPDX license identifier
      linux/torture: Convert to SPDX license identifier
      locking/locktorture: Convert to SPDX license identifier
      Merge branches 'doc.2019.01.26a', 'fixes.2019.01.26a', 'sil.2019.01.26a', 'spdx.2019.02.09a', 'srcu.2019.01.26a' and 'torture.2019.01.26a' into HEAD

Sebastian Andrzej Siewior (1):
      srcu: Remove srcu_queue_delayed_work_on()

Willy Tarreau (5):
      rcutorture/nolibc: Fix the clobbered registers in the MIPS syscall definition
      rcutorture/nolibc: Fix some poor indentation and alignment
      rcutorture/nolibc: Add a bit of documentation to explain how to use nolibc
      tools headers: Move the nolibc header from rcutorture to tools/include/nolibc/
      MAINTAINERS: Add myself as the maintainer for the nolibc header file(s)

Zhang, Jun (2):
      rcu: Do RCU GP kthread self-wakeup from softirq and interrupt
      rcu: Prevent needless ->gp_seq_needed update in __note_gp_changes()

 .../Expedited-Grace-Periods/ExpSchedFlow.svg       |  18 +-
 .../Expedited-Grace-Periods.html                   |  26 +-
 .../Memory-Ordering/Tree-RCU-Memory-Ordering.html  |   6 +-
 .../TreeRCU-callback-invocation.svg                |   2 +-
 .../RCU/Design/Memory-Ordering/TreeRCU-gp.svg      |   8 +-
 .../RCU/Design/Memory-Ordering/TreeRCU-qs.svg      |   6 +-
 .../RCU/Design/Requirements/Requirements.html      |  20 +-
 Documentation/RCU/stallwarn.txt                    |  15 +-
 Documentation/RCU/torture.txt                      | 169 +------------
 Documentation/RCU/whatisRCU.txt                    |   4 +-
 Documentation/admin-guide/kernel-parameters.txt    |  32 ++-
 MAINTAINERS                                        |   6 +
 include/asm-generic/bug.h                          |   3 -
 include/linux/rcu_node_tree.h                      |  17 +-
 include/linux/rcu_segcblist.h                      |  17 +-
 include/linux/rcu_sync.h                           |  15 +-
 include/linux/rcupdate.h                           |  91 +------
 include/linux/rcutiny.h                            |  17 +-
 include/linux/rcutree.h                            |  19 +-
 include/linux/srcu.h                               |  18 +-
 include/linux/srcutiny.h                           |  17 +-
 include/linux/srcutree.h                           |  20 +-
 include/linux/torture.h                            |  20 +-
 kernel/locking/locktorture.c                       |  21 +-
 kernel/rcu/rcu.h                                   |  21 +-
 kernel/rcu/rcu_segcblist.c                         |  17 +-
 kernel/rcu/rcu_segcblist.h                         |  17 +-
 kernel/rcu/rcuperf.c                               |  27 +--
 kernel/rcu/rcutorture.c                            |  59 +++--
 kernel/rcu/srcutiny.c                              |  17 +-
 kernel/rcu/srcutree.c                              |  72 ++----
 kernel/rcu/sync.c                                  |  15 +-
 kernel/rcu/tiny.c                                  |  19 +-
 kernel/rcu/tree.c                                  | 267 +++++++++++++--------
 kernel/rcu/tree.h                                  |  53 ++--
 kernel/rcu/tree_exp.h                              | 201 ++++++----------
 kernel/rcu/tree_plugin.h                           | 238 +++++-------------
 kernel/rcu/update.c                                |  17 +-
 kernel/sched/cpufreq.c                             |   4 +-
 kernel/sched/cpufreq_schedutil.c                   |   2 +-
 kernel/sched/sched.h                               |   2 +-
 kernel/sched/topology.c                            |   4 +-
 kernel/time/timer.c                                |   2 +-
 kernel/torture.c                                   |  25 +-
 .../rcutorture/bin => include/nolibc}/nolibc.h     | 118 +++++++--
 tools/testing/selftests/rcutorture/bin/ |  27 ++-
 virt/kvm/kvm_main.c                                |   2 +-
 47 files changed, 640 insertions(+), 1173 deletions(-)
 rename tools/{testing/selftests/rcutorture/bin => include/nolibc}/nolibc.h (94%)

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