Re: [GIT PULL rcu/next] RCU commits for 4.15

From: Ingo Molnar
Date: Tue Oct 24 2017 - 04:52:17 EST



* Paul E. McKenney <paulmck@xxxxxxxxxxxxxxxxxx> wrote:

> Hello, Ingo,
>
> [ Resend, this time remembering to CC LKML. ]
>
> This pull request contains the following changes:
>
> 1. Documentation updates.
>
> lkml.kernel.org/r/20171004212051.GA8411@xxxxxxxxxxxxxxxxxx
>
> (But note that a number of these commits were redirected to
> v4.14 on the request of Randy Dunlap and Jon Corbet.)
>
> 2. Miscellaneous fixes.
>
> lkml.kernel.org/r/20171004212915.GA10089@xxxxxxxxxxxxxxxxxx
>
> 3. RCU CPU stall-warning updates.
>
> lkml.kernel.org/r/20171004215006.GA12792@xxxxxxxxxxxxxxxxxx
>
> 4. Torture-test updates.
>
> lkml.kernel.org/r/20171004215609.GA14782@xxxxxxxxxxxxxxxxxx
>
> All of these commits have been exposed 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 ad4e25a3a1a5a95b334242d908e26f1249db83e0:
>
> Merge branches 'doc.2017.10.20a', 'fixes.2017.10.19a', 'stall.2017.10.09a' and 'torture.2017.10.09a' into HEAD (2017-10-20 11:11:15 -0700)
>
> ----------------------------------------------------------------
> Alan Stern (1):
> memory-barriers: Rework multicopy-atomicity section
>
> Guilherme G. Piccoli (1):
> doc: Rewrite confusing statement about memory barriers
>
> Neeraj Upadhyay (1):
> rcu: Fix up pending cbs check in rcu_prepare_for_idle
>
> Paul E. McKenney (19):
> documentation: RCU grace-period memory ordering guarantees
> documentation: Long-running irq handlers can stall RCU grace periods
> documentation: Slow systems can stall RCU grace periods
> documentation: Update RCU CPU stall warning messages
> memory-barriers: Replace uses of "transitive"
> rcu: Create call_rcu_tasks() kthread at boot time
> irq_work: Map irq_work_on_queue() to irq_work_on() in !SMP
> sched: Make resched_cpu() unconditional
> sched,rcu: Make cond_resched() provide RCU quiescent state
> rcu: Make RCU CPU stall warnings check for irq-disabled CPUs
> rcu: Turn off tracing before dumping trace
> rcu: Suppress RCU CPU stall warnings while dumping trace
> rcutorture: Add interrupt-disable capability to stall-warning tests
> rcutorture: Dump writer stack if stalled
> torture: Provide TMPDIR environment variable to specify tmpdir
> rcu: Suppress lockdep false-positive ->boost_mtx complaints
> rcu: Add extended-quiescent-state testing advice
> srcu: Add parameters to SRCU docbook comments
> Merge branches 'doc.2017.10.20a', 'fixes.2017.10.19a', 'stall.2017.10.09a' and 'torture.2017.10.09a' into HEAD
>
> Scott Tsai (1):
> memory-barriers.txt: Fix typo in pairing example
>
> Sebastian Andrzej Siewior (2):
> rcu: Do not include rtmutex_common.h unconditionally
> rcu/segcblist: Include rcupdate.h
>
> .../Design/Memory-Ordering/Tree-RCU-Diagram.html | 9 +
> .../Memory-Ordering/Tree-RCU-Memory-Ordering.html | 707 +++
> .../TreeRCU-callback-invocation.svg | 486 ++
> .../Memory-Ordering/TreeRCU-callback-registry.svg | 655 +++
> .../RCU/Design/Memory-Ordering/TreeRCU-dyntick.svg | 700 +++
> .../Design/Memory-Ordering/TreeRCU-gp-cleanup.svg | 1126 +++++
> .../RCU/Design/Memory-Ordering/TreeRCU-gp-fqs.svg | 1309 +++++
> .../Design/Memory-Ordering/TreeRCU-gp-init-1.svg | 656 +++
> .../Design/Memory-Ordering/TreeRCU-gp-init-2.svg | 656 +++
> .../Design/Memory-Ordering/TreeRCU-gp-init-3.svg | 632 +++
> .../RCU/Design/Memory-Ordering/TreeRCU-gp.svg | 5135 ++++++++++++++++++++
> .../RCU/Design/Memory-Ordering/TreeRCU-hotplug.svg | 775 +++
> .../RCU/Design/Memory-Ordering/TreeRCU-qs.svg | 1095 +++++
> .../RCU/Design/Memory-Ordering/rcu_node-lock.svg | 229 +
> Documentation/RCU/stallwarn.txt | 200 +-
> Documentation/admin-guide/kernel-parameters.txt | 3 +
> Documentation/memory-barriers.txt | 197 +-
> include/linux/irq_work.h | 3 -
> include/linux/srcu.h | 1 +
> kernel/irq_work.c | 9 +-
> kernel/rcu/rcu.h | 21 +-
> kernel/rcu/rcu_segcblist.c | 1 +
> kernel/rcu/rcutorture.c | 24 +-
> kernel/rcu/srcutree.c | 2 +-
> kernel/rcu/tree.c | 159 +-
> kernel/rcu/tree.h | 5 +
> kernel/rcu/tree_plugin.h | 14 +-
> kernel/rcu/update.c | 25 +-
> kernel/sched/core.c | 5 +-
> .../selftests/rcutorture/bin/config_override.sh | 2 +-
> .../selftests/rcutorture/bin/configcheck.sh | 2 +-
> .../testing/selftests/rcutorture/bin/configinit.sh | 2 +-
> .../testing/selftests/rcutorture/bin/kvm-build.sh | 2 +-
> .../selftests/rcutorture/bin/kvm-test-1-run.sh | 2 +-
> tools/testing/selftests/rcutorture/bin/kvm.sh | 4 +-
> .../selftests/rcutorture/bin/parse-build.sh | 2 +-
> .../selftests/rcutorture/bin/parse-torture.sh | 2 +-
> 37 files changed, 14600 insertions(+), 257 deletions(-)
> create mode 100644 Documentation/RCU/Design/Memory-Ordering/Tree-RCU-Diagram.html
> create mode 100644 Documentation/RCU/Design/Memory-Ordering/Tree-RCU-Memory-Ordering.html
> create mode 100644 Documentation/RCU/Design/Memory-Ordering/TreeRCU-callback-invocation.svg
> create mode 100644 Documentation/RCU/Design/Memory-Ordering/TreeRCU-callback-registry.svg
> create mode 100644 Documentation/RCU/Design/Memory-Ordering/TreeRCU-dyntick.svg
> create mode 100644 Documentation/RCU/Design/Memory-Ordering/TreeRCU-gp-cleanup.svg
> create mode 100644 Documentation/RCU/Design/Memory-Ordering/TreeRCU-gp-fqs.svg
> create mode 100644 Documentation/RCU/Design/Memory-Ordering/TreeRCU-gp-init-1.svg
> create mode 100644 Documentation/RCU/Design/Memory-Ordering/TreeRCU-gp-init-2.svg
> create mode 100644 Documentation/RCU/Design/Memory-Ordering/TreeRCU-gp-init-3.svg
> create mode 100644 Documentation/RCU/Design/Memory-Ordering/TreeRCU-gp.svg
> create mode 100644 Documentation/RCU/Design/Memory-Ordering/TreeRCU-hotplug.svg
> create mode 100644 Documentation/RCU/Design/Memory-Ordering/TreeRCU-qs.svg
> create mode 100644 Documentation/RCU/Design/Memory-Ordering/rcu_node-lock.svg

Pulled, thanks a lot Paul!

Ingo