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Message-ID: <20190418124451.GA104512@gmail.com>
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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