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Date:   Thu, 18 Apr 2019 14:44:51 +0200
From:   Ingo Molnar <mingo@...nel.org>
To:     "Paul E. McKenney" <paulmck@...ux.ibm.com>
Cc:     rcu@...r.kernel.org, linux-kernel@...r.kernel.org,
        stern@...land.harvard.edu, Luc.Maranget@...ia.fr,
        andrea.parri@...rulasolutions.com, sj38.park@...il.com,
        peterz@...radead.org, tycho@...ho.ws, joel@...lfernandes.org,
        gorcunov@...il.com, fishland@...yun.com, akiyks@...il.com,
        neeraju@...eaurora.org, zhouzhouyi@...il.com
Subject: Re: [GIT PULL rcu/next + tools/memory-model] RCU and LKMM commits
 for 5.2


* Paul E. McKenney <paulmck@...ux.ibm.com> wrote:

> Hello, Ingo,
> 
> This pull request contains the following changes:
> 
> 1.	An LKMM commit adding support for synchronize_srcu_expedited().
> 
> 	http://lkml.kernel.org/r/20190326234133.24962-8-paulmck@linux.ibm.com
> 
> 2.	A couple of straggling RCU flavor consolidation updates.
> 
> 	http://lkml.kernel.org/r/20190326230011.GA16275@linux.ibm.com
> 
> 3.	Documentation updates.
> 
> 	http://lkml.kernel.org/r/20190326230408.GA17069@linux.ibm.com
> 
> 4.	Miscellaneous fixes.
> 
> 	http://lkml.kernel.org/r/20190326231253.GA18343@linux.ibm.com
> 
> 5.	SRCU updates.
> 
> 	http://lkml.kernel.org/r/20190326231512.GA19843@linux.ibm.com
> 
> 6.	RCU CPU stall-warning updates.
> 
> 	http://lkml.kernel.org/r/20190326232208.GA20384@linux.ibm.com
> 
> 7.	Torture-test updates.
> 
> 	http://lkml.kernel.org/r/20190326233054.GA21523@linux.ibm.com
> 
> All of these changes have been subjected 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 91df49e187c1a111e423fe0c3aec3472980385e4:
> 
>   Merge LKMM and RCU commits (2019-04-16 07:08:07 -0700)
> 
> ----------------------------------------------------------------
> Akira Yokosawa (1):
>       rcu: Move common code out of if-else block
> 
> Alan Stern (4):
>       tools/memory-model: Rename some RCU relations
>       tools/memory-model: Refactor some RCU relations
>       tools/memory-model: Add SRCU support
>       tools/memory-model: Update Documentation/explanation.txt to include SRCU support
> 
> Andrea Parri (1):
>       tools/memory-model: Avoid duplicating herdtools versions
> 
> Cyrill Gorcunov (1):
>       rcu: rcu_qs -- Use raise_softirq_irqoff to not save irqs twice
> 
> Joel Fernandes (Google) (1):
>       rcu: Avoid unnecessary softirq when system is idle
> 
> Liu Song (1):
>       rcu: Set rcutree.kthread_prio sysfs access to read-only
> 
> Luc Maranget (1):
>       tools/memory-model: Dynamically check SRCU lock-to-unlock matching
> 
> Neeraj Upadhyay (5):
>       rcu: Fix self-wakeups for grace-period kthread
>       rcu: Default jiffies_to_sched_qs to jiffies_till_sched_qs
>       rcu: Do a single rhp->func read in rcu_head_after_call_rcu()
>       rcu: Fix nohz status in stall warning
>       rcutorture: Fix expected forward progress duration in OOM notifier
> 
> Paul E. McKenney (39):
>       tools/memory-model: Update README for addition of SRCU
>       doc: Remove obsolete RCU update functions from RCU documentation
>       doc: Describe choice of rcu_dereference() APIs and __rcu usage
>       doc: Fix typos and otherwise modernize checklist.txt
>       rcu: Unconditionally expedite during suspend/hibernate
>       rcu: Make exit_rcu() handle non-preempted RCU readers
>       MAINTAINERS: RCU now has its own email list
>       MAINTAINERS: Add -rcu branch name ("dev")
>       rcu: Allow rcu_nocbs= to specify all CPUs
>       rcu: Report error for bad rcu_nocbs= parameter values
>       rcu: Update jiffies_to_sched_qs and adjust_jiffies_till_sched_qs() comments
>       rcu: Eliminate redundant NULL-pointer check
>       rcu: Fix typo in tree_exp.h comment
>       rcu: Correct READ_ONCE()/WRITE_ONCE() for ->rcu_read_unlock_special
>       srcu: Check for in-flight callbacks in _cleanup_srcu_struct()
>       srcu: Remove cleanup_srcu_struct_quiesced()
>       rcu: Move RCU CPU stall-warning code out of update.c
>       rcu: Move RCU CPU stall-warning code out of tree_plugin.h
>       rcu: Move RCU CPU stall-warning code out of tree.c
>       rcu: Inline RCU task stall-warning helper functions
>       rcu: Move rcu_print_task_exp_stall() to tree_exp.h
>       rcu: Inline RCU stall-warning info helper functions
>       rcu: Move FAST_NO_HZ stall-warning code to tree_stall.h
>       rcu: Organize functions in tree_stall.h
>       rcu: Move irq-disabled stall-warning checking to tree_stall.h
>       rcu: Move forward-progress checkers into tree_stall.h
>       torture: Don't try to offline the last CPU
>       tools/.../rcutorture: Convert to SPDX license identifier
>       rcutorture: Make rcutorture_extend_mask() comment match the code
>       rcutorture: Remove ->ext_irq_conflict field
>       rcutorture: Fix cleanup path for invalid torture_type strings
>       rcuperf: Fix cleanup path for invalid perf_type strings
>       locktorture: NULL cxt.lwsa and cxt.lrsa to allow bad-arg detection
>       torture: Suppress false-positive CONFIG_INITRAMFS_SOURCE complaint
>       doc/kprobes: Update obsolete RCU update functions
>       tools/memory-model: Add support for synchronize_srcu_expedited()
>       net/ipv4/netfilter: Update comment from call_rcu_bh() to call_rcu()
>       Merge branches 'consolidate.2019.04.09a', 'doc.2019.03.26b', 'fixes.2019.03.26b', 'srcu.2019.03.26b', 'stall.2019.03.26b' and 'torture.2019.03.26b' into HEAD
>       Merge LKMM and RCU commits
> 
> Peter Zijlstra (1):
>       Documentation/atomic_t: Clarify signed vs unsigned
> 
> SeongJae Park (2):
>       sched/Documentation/kokr: Update Korean translation to update wake_up() & co. memory-barrier guarantees
>       locking/memory-barriers/kokr: Update Korean translation to replace smp_cond_acquire() with smp_cond_load_acquire()
> 
> Tycho Andersen (1):
>       doc: Repair some whitespace damage
> 
> Zhouyi Zhou (1):
>       rcu: Fix force_qs_rnp() header comment
> 
>  .../Design/Data-Structures/Data-Structures.html    |   3 +-
>  .../Expedited-Grace-Periods.html                   |   4 +-
>  .../Memory-Ordering/Tree-RCU-Memory-Ordering.html  |   5 +-
>  Documentation/RCU/NMI-RCU.txt                      |  13 +-
>  Documentation/RCU/UP.txt                           |   6 +-
>  Documentation/RCU/checklist.txt                    |  91 ++-
>  Documentation/RCU/rcu.txt                          |   8 +-
>  Documentation/RCU/rcu_dereference.txt              | 103 +++
>  Documentation/RCU/rcubarrier.txt                   |  27 +-
>  Documentation/RCU/whatisRCU.txt                    |  10 +-
>  Documentation/admin-guide/kernel-parameters.txt    |   4 +-
>  Documentation/atomic_t.txt                         |  17 +
>  Documentation/kprobes.txt                          |   6 +-
>  .../translations/ko_KR/memory-barriers.txt         |  49 +-
>  MAINTAINERS                                        |  16 +-
>  drivers/nvme/host/core.c                           |   2 +-
>  include/linux/rcupdate.h                           |   6 +-
>  include/linux/srcu.h                               |  36 +-
>  kernel/locking/locktorture.c                       |   2 +
>  kernel/rcu/rcu.h                                   |   1 +
>  kernel/rcu/rcuperf.c                               |   5 +
>  kernel/rcu/rcutorture.c                            |  21 +-
>  kernel/rcu/srcutiny.c                              |   9 +-
>  kernel/rcu/srcutree.c                              |  32 +-
>  kernel/rcu/tiny.c                                  |   2 +-
>  kernel/rcu/tree.c                                  | 508 +--------------
>  kernel/rcu/tree.h                                  |  14 +-
>  kernel/rcu/tree_exp.h                              |  36 +-
>  kernel/rcu/tree_plugin.h                           | 257 +-------
>  kernel/rcu/tree_stall.h                            | 709 +++++++++++++++++++++
>  kernel/rcu/update.c                                |  59 +-
>  kernel/torture.c                                   |   2 +
>  net/ipv4/netfilter/ipt_CLUSTERIP.c                 |   2 +-
>  tools/memory-model/Documentation/explanation.txt   | 289 +++++----
>  tools/memory-model/README                          |  33 +-
>  tools/memory-model/linux-kernel.bell               |  35 +-
>  tools/memory-model/linux-kernel.cat                |  39 +-
>  tools/memory-model/linux-kernel.def                |   6 +
>  tools/memory-model/lock.cat                        |   3 -
>  .../selftests/rcutorture/bin/configNR_CPUS.sh      |  17 +-
>  .../selftests/rcutorture/bin/config_override.sh    |  17 +-
>  .../selftests/rcutorture/bin/configcheck.sh        |  19 +-
>  .../testing/selftests/rcutorture/bin/configinit.sh |  17 +-
>  tools/testing/selftests/rcutorture/bin/cpus2use.sh |  17 +-
>  .../testing/selftests/rcutorture/bin/functions.sh  |  17 +-
>  tools/testing/selftests/rcutorture/bin/jitter.sh   |  17 +-
>  .../testing/selftests/rcutorture/bin/kvm-build.sh  |  17 +-
>  .../selftests/rcutorture/bin/kvm-find-errors.sh    |   5 +
>  .../selftests/rcutorture/bin/kvm-recheck-lock.sh   |  17 +-
>  .../selftests/rcutorture/bin/kvm-recheck-rcu.sh    |  17 +-
>  .../rcutorture/bin/kvm-recheck-rcuperf-ftrace.sh   |  17 +-
>  .../rcutorture/bin/kvm-recheck-rcuperf.sh          |  17 +-
>  .../selftests/rcutorture/bin/kvm-recheck.sh        |  17 +-
>  .../selftests/rcutorture/bin/kvm-test-1-run.sh     |  17 +-
>  tools/testing/selftests/rcutorture/bin/kvm.sh      |  17 +-
>  tools/testing/selftests/rcutorture/bin/mkinitrd.sh |  15 +-
>  .../selftests/rcutorture/bin/parse-build.sh        |  17 +-
>  .../selftests/rcutorture/bin/parse-console.sh      |  17 +-
>  .../rcutorture/configs/lock/ver_functions.sh       |  17 +-
>  .../rcutorture/configs/rcu/ver_functions.sh        |  17 +-
>  .../rcutorture/configs/rcuperf/ver_functions.sh    |  17 +-
>  61 files changed, 1374 insertions(+), 1458 deletions(-)
>  create mode 100644 kernel/rcu/tree_stall.h

Pulled into tip:core/rcu, thanks a lot Paul!

	Ingo

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