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Message-ID: <20160516141400.GA18813@gmail.com>
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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