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Date:	Mon, 16 May 2016 16:14:00 +0200
From:	Ingo Molnar <mingo@...nel.org>
To:	Linus Torvalds <torvalds@...ux-foundation.org>
Cc:	linux-kernel@...r.kernel.org,
	"Paul E. McKenney" <paulmck@...ibm.com>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Thomas Gleixner <tglx@...utronix.de>,
	Andrew Morton <akpm@...ux-foundation.org>
Subject: [GIT PULL] RCU changes for v4.7

Linus,

Please pull the latest core-rcu-for-linus git tree from:

   git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git core-rcu-for-linus

   # HEAD: 41ed943d855c3fa2bf6fecc33250b294bd568b7a Merge branch 'for-mingo' of git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu into core/rcu

The main changes are:

  * Documentation updates, including fixes to the design-level
    requirements documentation and a fixed version of the design-level
    data-structure documentation.  These fixes include removing
    cartoons and getting rid of the html/htmlx duplication.
    
  * Further improvements to the new-age expedited grace periods.
    
  * Miscellaneous fixes.
    
  * Torture-test changes, including a new rcuperf module for measuring
    RCU grace-period performance and scalability, which is useful for
    the expedited-grace-period changes.

 Thanks,

	Ingo

------------------>
Anna-Maria Gleixner (1):
      rcutorture: Consider FROZEN hotplug notifier transitions

Artem Savkov (1):
      rcuperf: Do not wake up shutdown wait queue if "shutdown" is false.

Boqun Feng (1):
      rcu: Remove superfluous versions of rcu_read_lock_sched_held()

Paul E. McKenney (52):
      rcu: Consolidate dumping of ftrace buffer
      documentation:  Add real-time requirements from CPU-bound workloads
      documentation: Add synchronize_rcu_mult() to the requirements
      documentation: Explain why rcu_read_lock() needs no barrier()
      documentation: Document illegality of call_rcu() from offline CPUs
      documentation: Remove unnecessary images from requirements
      documentation: Get rid of duplicate .htmlx file
      documentation: Sharpen up the no-readers quick quiz
      documentation: Emphasize the call_rcu() is illegal from idle
      rcu: Make expedited RCU-sched grace period immediately detect idle
      rcu: Make expedited RCU-preempt stall warnings count accurately
      rcu: Make cond_resched_rcu_qs() supply RCU-sched expedited QS
      rcu: Fix synchronize_rcu_expedited() header comment
      rcu: Add event tracing definitions for expedited grace periods
      rcu: Add funnel-locking tracing for expedited grace periods
      rcu: Add expedited-grace-period event tracing
      rcu: Remove expedited GP funnel-lock bypass
      rcu: Force boolean subscript for expedited stall warnings
      rcu: Shorten expedited_workdone* to exp_workdone*
      rcu: Enforce expedited-GP fairness via funnel wait queue
      rcu: Add exp_funnel_lock() fastpath
      rcu: Consolidate expedited GP code into rcu_exp_wait_wake()
      rcu: Consolidate expedited GP tracing into rcu_exp_gp_seq_snap()
      rcu: Consolidate expedited GP code into exp_funnel_lock()
      rcu: Overlap wakeups with next expedited grace period
      rcu: Awaken grace-period kthread when stalled
      rcu: Make FQS schedule advance only if FQS happened
      rcu: Awaken grace-period kthread if too long since FQS
      rcu: Dump ftrace buffer when kicking grace-period kthread
      rcutorture: Update scripting to accommodate rcuperf
      rcutorture: Allow for rcupdate.rcu_normal
      rcutorture: Expedited-GP batch progress access to torturing
      rcutorture: Add RCU grace-period performance tests
      rcutorture: Documentation for rcuperf kernel parameters
      rcutorture: Bind rcuperf reader/writer kthreads to CPUs
      rcutorture: Set rcuperf writer kthreads to real-time priority
      rcutorture: Print measure of batching efficiency
      rcutorture: Make rcuperf collect expedited event-trace data
      rcutorture: Make scripts analyze rcuperf trace data, if present
      rcutorture: Add rcuperf holdoff boot parameter to reduce interference
      rcutorture: Avoid RCU CPU stall warning and RT throttling
      rcutorture: Add largish-system rcuperf scenario
      rcutorture: Remove redundant initialization to zero
      torture: Clarify refusal to run more than one torture test
      torture: Kill qemu, not parent process
      rcutorture: Convert test duration to seconds early
      documentation: Add documentation for RCU's major data structures
      rcutorture: Add OS-jitter capability
      rcutorture: Don't rebuild identical kernel
      rcutorture: Dump trace buffer upon shutdown
      rcutorture: Add irqs-disabled test for call_rcu()
      rcutorture: Add boot-time adjustment of leaf fanout

Yao Dongdong (1):
      documentation: Make sample code and documentation consistent


 .../Design/Data-Structures/BigTreeClassicRCU.svg   |  474 ++++
 .../Design/Data-Structures/BigTreeClassicRCUBH.svg |  499 ++++
 .../Data-Structures/BigTreeClassicRCUBHdyntick.svg |  695 +++++
 .../Data-Structures/BigTreePreemptRCUBHdyntick.svg |  741 ++++++
 .../BigTreePreemptRCUBHdyntickCB.svg               |  858 ++++++
 .../Design/Data-Structures/Data-Structures.html    | 1333 ++++++++++
 .../Design/Data-Structures/HugeTreeClassicRCU.svg  |  939 +++++++
 .../RCU/Design/Data-Structures/TreeLevel.svg       |  828 ++++++
 .../RCU/Design/Data-Structures/TreeMapping.svg     |  305 +++
 .../Design/Data-Structures/TreeMappingLevel.svg    |  380 +++
 .../RCU/Design/Data-Structures/blkd_task.svg       |  843 ++++++
 .../RCU/Design/Data-Structures/nxtlist.svg         |  396 +++
 .../RCU/Design/Requirements/2013-08-is-it-dead.png |  Bin 100825 -> 0 bytes
 .../RCU/Design/Requirements/RCUApplicability.svg   |  237 --
 .../RCU/Design/Requirements/Requirements.html      |  941 ++++---
 .../RCU/Design/Requirements/Requirements.htmlx     | 2741 --------------------
 Documentation/RCU/Design/htmlqqz.sh                |  108 -
 Documentation/RCU/trace.txt                        |   10 +-
 Documentation/RCU/whatisRCU.txt                    |   22 +-
 Documentation/kernel-parameters.txt                |   38 +
 include/linux/rcupdate.h                           |   30 +-
 include/linux/rcutiny.h                            |   16 +
 include/linux/rcutree.h                            |    2 +
 include/trace/events/rcu.h                         |   79 +-
 kernel/rcu/Makefile                                |    1 +
 kernel/rcu/rcuperf.c                               |  655 +++++
 kernel/rcu/rcutorture.c                            |   29 +-
 kernel/rcu/tree.c                                  |  302 ++-
 kernel/rcu/tree.h                                  |   20 +-
 kernel/rcu/tree_plugin.h                           |   37 +-
 kernel/rcu/tree_trace.c                            |   13 +-
 kernel/rcu/update.c                                |    4 +-
 kernel/torture.c                                   |    4 +-
 lib/Kconfig.debug                                  |   33 +
 tools/testing/selftests/rcutorture/bin/jitter.sh   |   90 +
 .../rcutorture/bin/kvm-recheck-rcuperf-ftrace.sh   |  121 +
 .../rcutorture/bin/kvm-recheck-rcuperf.sh          |   96 +
 .../selftests/rcutorture/bin/kvm-recheck.sh        |    5 +-
 .../selftests/rcutorture/bin/kvm-test-1-run.sh     |   59 +-
 tools/testing/selftests/rcutorture/bin/kvm.sh      |   24 +-
 .../selftests/rcutorture/configs/rcu/TREE04        |    2 +-
 .../selftests/rcutorture/configs/rcu/TREE04.boot   |    2 +-
 .../selftests/rcutorture/configs/rcuperf/CFLIST    |    1 +
 .../selftests/rcutorture/configs/rcuperf/CFcommon  |    2 +
 .../selftests/rcutorture/configs/rcuperf/TREE      |   20 +
 .../selftests/rcutorture/configs/rcuperf/TREE54    |   23 +
 .../rcutorture/configs/rcuperf/ver_functions.sh    |   52 +
 47 files changed, 10417 insertions(+), 3693 deletions(-)
 create mode 100644 Documentation/RCU/Design/Data-Structures/BigTreeClassicRCU.svg
 create mode 100644 Documentation/RCU/Design/Data-Structures/BigTreeClassicRCUBH.svg
 create mode 100644 Documentation/RCU/Design/Data-Structures/BigTreeClassicRCUBHdyntick.svg
 create mode 100644 Documentation/RCU/Design/Data-Structures/BigTreePreemptRCUBHdyntick.svg
 create mode 100644 Documentation/RCU/Design/Data-Structures/BigTreePreemptRCUBHdyntickCB.svg
 create mode 100644 Documentation/RCU/Design/Data-Structures/Data-Structures.html
 create mode 100644 Documentation/RCU/Design/Data-Structures/HugeTreeClassicRCU.svg
 create mode 100644 Documentation/RCU/Design/Data-Structures/TreeLevel.svg
 create mode 100644 Documentation/RCU/Design/Data-Structures/TreeMapping.svg
 create mode 100644 Documentation/RCU/Design/Data-Structures/TreeMappingLevel.svg
 create mode 100644 Documentation/RCU/Design/Data-Structures/blkd_task.svg
 create mode 100644 Documentation/RCU/Design/Data-Structures/nxtlist.svg
 delete mode 100644 Documentation/RCU/Design/Requirements/2013-08-is-it-dead.png
 delete mode 100644 Documentation/RCU/Design/Requirements/RCUApplicability.svg
 delete mode 100644 Documentation/RCU/Design/Requirements/Requirements.htmlx
 delete mode 100755 Documentation/RCU/Design/htmlqqz.sh
 create mode 100644 kernel/rcu/rcuperf.c
 create mode 100755 tools/testing/selftests/rcutorture/bin/jitter.sh
 create mode 100755 tools/testing/selftests/rcutorture/bin/kvm-recheck-rcuperf-ftrace.sh
 create mode 100755 tools/testing/selftests/rcutorture/bin/kvm-recheck-rcuperf.sh
 create mode 100644 tools/testing/selftests/rcutorture/configs/rcuperf/CFLIST
 create mode 100644 tools/testing/selftests/rcutorture/configs/rcuperf/CFcommon
 create mode 100644 tools/testing/selftests/rcutorture/configs/rcuperf/TREE
 create mode 100644 tools/testing/selftests/rcutorture/configs/rcuperf/TREE54
 create mode 100644 tools/testing/selftests/rcutorture/configs/rcuperf/ver_functions.sh

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