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Message-ID: <20150531044830.GA3176@linux.vnet.ibm.com>
Date:	Sat, 30 May 2015 21:48:30 -0700
From:	"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>
To:	mingo@...nel.org
Cc:	linux-kernel@...r.kernel.org, will.deacon@....com,
	milos@...hat.com, joe@...ches.com, pdaly@...eaurora.org,
	nicolas.iooss_linux@....org, hofrat@...dl.org,
	ying.xue@...driver.com, paul.gortmaker@...driver.com,
	bobby.prani@...il.com, alexey.kodanev@...cle.com
Subject: [GIT PULL rcu/next] RCU commits for 4.2

Hello, Ingo,

The changes in this series include the following:

1.	Remove all uses of RCU-protected array indexes.  These were posted
	to LKML at https://lkml.org/lkml/2015/5/12/827.

2.	Documentation updates.  These were posted to LKML at
	https://lkml.org/lkml/2015/5/12/848.

3.	Miscellaneous fixes.  These were posted to LKML at
	https://lkml.org/lkml/2015/5/12/876.

4.	CPU-hotplug updates.  These were posted to LKML at
	https://lkml.org/lkml/2015/5/12/880.

5.	Initialization/Kconfig updates.  These were posted to LKML at
	https://lkml.org/lkml/2015/5/12/918, however, the updates to
	Tree RCU's initialization have been deferred to 4.3.

6.	Updates to Tiny RCU.  These were posted to LKML at
	https://lkml.org/lkml/2015/5/12/957.

7.	Torture-testing updates.  These were posted to LKML at
	https://lkml.org/lkml/2015/5/12/964.

All of these changes have been subjected to -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 0868aa22167d93dd974c253d259c3e6fd47a16c8:

  Merge branches 'array.2015.05.27a', 'doc.2015.05.27a', 'fixes.2015.05.27a', 'hotplug.2015.05.27a', 'init.2015.05.27a', 'tiny.2015.05.27a' and 'torture.2015.05.27a' into HEAD (2015-05-27 13:00:49 -0700)

----------------------------------------------------------------

Alexey Kodanev (1):
      locktorture: fix deadlock in 'rw_lock_irq' type

Joe Perches (1):
      rcu: tree_plugin: Use bool function return values of true/false not 1/0

Milos Vyletel (1):
      documentation: State that rcu_dereference() reloads pointer

Nicholas Mc Guire (1):
      rcu: Change function declaration to bool

Nicolas Iooss (1):
      rcu: Make rcu_*_data variables static

Patrick Daly (1):
      rcu: Fix missing task information during rcu-preempt stall

Paul E. McKenney (51):
      rcu: Convert ACCESS_ONCE() to READ_ONCE() and WRITE_ONCE()
      mce: Stop using array-index-based RCU primitives
      rcu: Eliminate array-index-based RCU primitives
      documentation: RCU-protected array indexes no longer supported
      mce: mce_chrdev_write() can be static
      documentation: Update rcu_dereference.txt based on WG21 discussions
      rcu: Convert from rcu_preempt_state to *rcu_state_p
      rcu: Eliminate a few RCU_BOOST #ifdefs in favor of IS_ENABLED()
      rcu: Tell the compiler that rcu_state_p is immutable
      rcu: Create an immutable rcu_data_p pointer to default rcu_data structure
      rcu: Eliminate a few CONFIG_RCU_NOCB_CPU_ALL #ifdefs
      rcu: Force wakeup of rcu_gp_kthread at grace-period end
      powerpc: Fix smp_mb__before_spinlock()
      rcu: Add more debug info on "kthread starved" RCU CPU stall warnings
      smp: Make control dependencies work on Alpha, improve documentation
      rcu: Make synchronize_sched_expedited() call wait_rcu_gp()
      rcu: Eliminate HOTPLUG_CPU #ifdef in favor of IS_ENABLED()
      rcu: Adjust ->lock acquisition for tasks no longer migrating
      rcu: Remove dead code from force_qs_rnp()
      rcu: Remove redundant offline check
      rcu: Correctly initialize ->rcu_qs_ctr_snap at online time
      cpu: Handle smpboot_unpark_threads() uniformly
      rcu: Modulate grace-period slow init to normalize delay
      rcu: Shut up spurious gcc uninitialized-variable warning
      rcu: Provide diagnostic option to slow down grace-period scans
      rcu: Directly drive TASKS_RCU from Kconfig
      rcu: Directly drive RCU_USER_QS from Kconfig
      rcu: Convert CONFIG_RCU_FANOUT_EXACT to boot parameter
      rcu: Enable diagnostic dump of rcu_node combining tree
      rcu: Create RCU_EXPERT Kconfig and hide booleans behind it
      rcu: Break dependency of RCU_FANOUT_LEAF on RCU_FANOUT
      rcu: Make RCU able to tolerate undefined CONFIG_RCU_FANOUT
      rcu: Make RCU able to tolerate undefined CONFIG_RCU_FANOUT_LEAF
      rcu: Make RCU able to tolerate undefined CONFIG_RCU_KTHREAD_PRIO
      rcu: Conditionally compile RCU's eqs warnings
      rcu: Further shrink Tiny RCU by making empty functions static inlines
      rcutorture: Test both RCU-sched and RCU-bh for Tiny RCU
      rcu: Correctly handle non-empty Tiny RCU callback list with none ready
      rcutorture: Exchange TREE03 and TREE04 geometries
      rcutorture: Exchange TREE03 and TREE08 NR_CPUS, speed up CPU hotplug
      rcutorture: Allow negative values of nreaders to oversubscribe
      locktorture: Change longdelay_us to longdelay_ms
      rcutorture: Replace barriers with smp_store_release() and smp_load_acquire()
      rcutorture: Test SRCU cleanup code path
      rcutorture: TASKS_RCU set directly, so don't explicitly set it
      rcutorture: Update configuration fragments for rcutree.rcu_fanout_exact
      rcutorture: Make rcutorture scripts force RCU_EXPERT
      rcutorture: Update TREE_RCU-kconfig.txt
      rcutorture: Display "make oldconfig" errors
      rcutorture: Allow repetition factors in Kconfig-fragment lists
      Merge branches 'array.2015.05.27a', 'doc.2015.05.27a', 'fixes.2015.05.27a', 'hotplug.2015.05.27a', 'init.2015.05.27a', 'tiny.2015.05.27a' and 'torture.2015.05.27a' into HEAD

Paul Gortmaker (1):
      cpu: Remove new instance of __cpuinit that crept back in

Pranith Kumar (1):
      rcu: Remove prompt for RCU implementation

Will Deacon (1):
      documentation: memory-barriers: Fix smp_mb__before_spinlock() semantics

Ying Xue (1):
      rculist: Fix another sparse warning

 Documentation/RCU/arrayRCU.txt                     |  20 +-
 Documentation/RCU/lockdep.txt                      |  10 -
 Documentation/RCU/rcu_dereference.txt              |  38 +--
 Documentation/RCU/whatisRCU.txt                    |   6 +-
 Documentation/kernel-parameters.txt                |  33 +-
 Documentation/memory-barriers.txt                  |  62 ++--
 arch/powerpc/include/asm/barrier.h                 |   1 +
 arch/x86/kernel/cpu/mcheck/mce.c                   |  15 +-
 include/linux/compiler.h                           |  16 +
 include/linux/rculist.h                            |  10 +-
 include/linux/rcupdate.h                           |  70 +---
 include/linux/rcutiny.h                            |  16 +
 include/linux/rcutree.h                            |   7 +-
 include/linux/spinlock.h                           |   2 +-
 init/Kconfig                                       |  72 ++--
 kernel/cpu.c                                       |   4 +-
 kernel/events/ring_buffer.c                        |   2 +-
 kernel/locking/locktorture.c                       |  14 +-
 kernel/rcu/rcutorture.c                            | 103 ++++--
 kernel/rcu/srcu.c                                  |  10 +-
 kernel/rcu/tiny.c                                  |  38 +--
 kernel/rcu/tiny_plugin.h                           |  12 +-
 kernel/rcu/tree.c                                  | 365 ++++++++++++---------
 kernel/rcu/tree.h                                  |  35 +-
 kernel/rcu/tree_plugin.h                           | 216 ++++++------
 kernel/rcu/tree_trace.c                            |   6 +-
 kernel/rcu/update.c                                |  30 +-
 kernel/torture.c                                   |  26 +-
 lib/Kconfig.debug                                  |  66 +++-
 .../testing/selftests/rcutorture/bin/configinit.sh |   2 +-
 .../selftests/rcutorture/bin/kvm-recheck.sh        |   4 +
 tools/testing/selftests/rcutorture/bin/kvm.sh      |  25 +-
 .../selftests/rcutorture/configs/rcu/CFcommon      |   2 +
 .../selftests/rcutorture/configs/rcu/SRCU-N        |   1 +
 .../selftests/rcutorture/configs/rcu/SRCU-P        |   1 +
 .../selftests/rcutorture/configs/rcu/SRCU-P.boot   |   2 +-
 .../selftests/rcutorture/configs/rcu/TASKS01       |   5 +-
 .../selftests/rcutorture/configs/rcu/TASKS02       |   1 -
 .../selftests/rcutorture/configs/rcu/TASKS03       |   2 +-
 .../selftests/rcutorture/configs/rcu/TINY02        |   2 +-
 .../selftests/rcutorture/configs/rcu/TINY02.boot   |   1 +
 .../selftests/rcutorture/configs/rcu/TREE01        |   1 +
 .../selftests/rcutorture/configs/rcu/TREE02        |   2 +-
 .../selftests/rcutorture/configs/rcu/TREE02-T      |   1 -
 .../selftests/rcutorture/configs/rcu/TREE03        |   8 +-
 .../selftests/rcutorture/configs/rcu/TREE03.boot   |   1 +
 .../selftests/rcutorture/configs/rcu/TREE04        |   8 +-
 .../selftests/rcutorture/configs/rcu/TREE05        |   4 +-
 .../selftests/rcutorture/configs/rcu/TREE06        |   4 +-
 .../selftests/rcutorture/configs/rcu/TREE06.boot   |   1 +
 .../selftests/rcutorture/configs/rcu/TREE07        |   4 +-
 .../selftests/rcutorture/configs/rcu/TREE08        |   6 +-
 .../selftests/rcutorture/configs/rcu/TREE08-T      |   1 -
 .../selftests/rcutorture/configs/rcu/TREE08-T.boot |   1 +
 .../selftests/rcutorture/configs/rcu/TREE08.boot   |   1 +
 .../selftests/rcutorture/configs/rcu/TREE09        |   1 +
 .../selftests/rcutorture/doc/TREE_RCU-kconfig.txt  |  36 +-
 57 files changed, 809 insertions(+), 624 deletions(-)
 create mode 100644 tools/testing/selftests/rcutorture/configs/rcu/TREE03.boot
 create mode 100644 tools/testing/selftests/rcutorture/configs/rcu/TREE08-T.boot

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