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Date: Mon, 19 Jan 2015 16:45:02 -0800
From: "Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>
To: mingo@...nel.org
Cc: xiexiuqi@...wei.com, dave@...olabs.net, agordeev@...hat.com,
bobby.prani@...il.com, linux-kernel@...r.kernel.org,
laijs@...fujitsu.com, ying.xue@...driver.com,
dahi@...ux.vnet.ibm.com, calvinowens@...com, mbenes@...e.cz
Subject: [GIT PULL rcu/next] RCU commits for 3.20
Hello, Ingo,
The changes in this series include:
1. Documentation updates. These were posted to LKML at
https://lkml.org/lkml/2015/1/7/496.
2. Miscellaneous fixes. These were posted to LKML at
https://lkml.org/lkml/2015/1/7/507.
3. Preemptible-RCU fixes, including fixing an old bug in the
interaction of RCU priority boosting and CPU hotplug. These were
posted to LKML at https://lkml.org/lkml/2015/1/7/535.
4. SRCU updates. These were posted to LKML at
https://lkml.org/lkml/2015/1/7/555.
5. RCU CPU stall-warning updates. These were posted to LKML at
https://lkml.org/lkml/2015/1/7/565.
6. RCU torture-test updates. These were posted to LKML at
https://lkml.org/lkml/2015/1/7/591.
These changes 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 78e691f4ae2d5edea0199ca802bb505b9cdced88:
Merge branches 'doc.2015.01.07a', 'fixes.2015.01.15a', 'preempt.2015.01.06a', 'srcu.2015.01.06a', 'stall.2015.01.16a' and 'torture.2015.01.11a' into HEAD (2015-01-15 23:34:34 -0800)
----------------------------------------------------------------
Alexander Gordeev (1):
rcu: Remove redundant rcu_is_cpu_rrupt_from_idle() from tiny RCU
Calvin Owens (1):
ksoftirqd: Enable IRQs and call cond_resched() before poking RCU
David Hildenbrand (1):
hotplugcpu: Avoid deadlocks by waking active_writer
Davidlohr Bueso (1):
documentation: Fix smp typo in memory-barriers.txt
Lai Jiangshan (3):
tiny_rcu: Directly force QS when call_rcu_[bh|sched]() on idle_task
rcu: Remove "select IRQ_WORK" from config TREE_RCU
rcu: Revert "Allow post-unlock reference for rt_mutex" to avoid priority-inversion
Miroslav Benes (1):
rcu: Fix RCU CPU stall detection in tiny implementation
Paul E. McKenney (43):
rcu: Make rcu_nmi_enter() handle nesting
rcu: Fix invoke_rcu_callbacks() comment
compiler: Allow 1- and 2-byte smp_load_acquire() and smp_store_release()
rcu: Fix rcu_barrier() race that could result in too-short wait
rcu: Protect rcu_boost() lockless accesses with ACCESS_ONCE()
rcu: Rename "empty" to "empty_norm" in preparation for boost rework
rcu: Abstract rcu_cleanup_dead_rnp() from rcu_cleanup_dead_cpu()
rcu: Make rcu_read_unlock_special() propagate ->qsmaskinit bit clearing
rcu: Don't migrate blocked tasks even if all corresponding CPUs offline
rcu: Shorten irq-disable region in rcu_cleanup_dead_cpu()
rcu: Make use of rcu_preempt_has_tasks()
rcu: Don't spawn rcub kthreads on root rcu_node structure
rcu: Don't initiate RCU priority boosting on root rcu_node
rcu: Don't bother affinitying rcub kthreads away from offline CPUs
rcu: Note quiescent state when CPU goes offline
rcu: Don't scan root rcu_node structure for stalled tasks
rcu: Remove redundant callback-list initialization
rcu: Expand SRCU ->completed to 64 bits
rcu: Combine DEFINE_SRCU() and DEFINE_STATIC_SRCU()
rcu: Set default to RCU_CPU_STALL_INFO=y
rcutorture: Add checks for stall ending before dump start
rcu: Make RCU_CPU_STALL_INFO include number of fqs attempts
rcu: Improve diagnostics for spurious RCU CPU stall warnings
rcu: Handle gpnum/completed wrap while dyntick idle
documentation: Record limitations of bitfields and small variables
rcutorture: Issue warnings on close calls due to Reader Batch blows
rcu: Make _batches_completed() functions return unsigned long
rcutorture: Make build-output parsing correctly flag RCU's warnings
rcutorture: Use unsigned for Reader Batch computations
rcu: Provide rcu_batches_completed_sched() for TINY_RCU
rcutorture: Drop rcu_torture_completed() and friends
rcu: Remove redundant rcu_batches_completed() declaration
rcutorture: Check from beginning to end of grace period
rcutorture: Handle different mpstat versions
torture: Add "-enable-kvm -soundhw pcspk" to qemu command line
torture: Flag console.log file to prevent holdovers from earlier runs
rcutorture: Add more diagnostics in rcu_barrier() test failure case
ksoftirqd: Use new cond_resched_rcu_qs() function
rcu: Optionally run grace-period kthreads at real-time priority
rcu: Make cond_resched_rcu_qs() apply to normal RCU flavors
rcu: Add GP-kthread-starvation checks to CPU stall warnings
rcu: Initialize tiny RCU stall-warning timeouts at boot
Merge branches 'doc.2015.01.07a', 'fixes.2015.01.15a', 'preempt.2015.01.06a', 'srcu.2015.01.06a', 'stall.2015.01.16a' and 'torture.2015.01.11a' into HEAD
Pranith Kumar (2):
rcupdate: Replace smp_read_barrier_depends() with lockless_dereference()
rcu: Make SRCU optional by using CONFIG_SRCU
Xie XiuQi (1):
documentation: Update sysfs path for rcu_cpu_stall_timeout
Ying Xue (1):
rculist: Fix sparse warning
Documentation/RCU/stallwarn.txt | 16 +-
Documentation/RCU/trace.txt | 32 +-
Documentation/memory-barriers.txt | 46 ++-
arch/arm/kvm/Kconfig | 1 +
arch/arm64/kvm/Kconfig | 1 +
arch/mips/kvm/Kconfig | 1 +
arch/powerpc/kvm/Kconfig | 1 +
arch/s390/kvm/Kconfig | 1 +
arch/tile/kvm/Kconfig | 1 +
arch/x86/Kconfig | 1 +
arch/x86/kvm/Kconfig | 1 +
drivers/clk/Kconfig | 1 +
drivers/cpufreq/Kconfig | 1 +
drivers/devfreq/Kconfig | 1 +
drivers/md/Kconfig | 1 +
drivers/net/Kconfig | 1 +
fs/btrfs/Kconfig | 1 +
fs/notify/Kconfig | 1 +
fs/quota/Kconfig | 1 +
include/linux/compiler.h | 2 +-
include/linux/rculist.h | 16 +-
include/linux/rcupdate.h | 13 +-
include/linux/rcutiny.h | 45 ++-
include/linux/rcutree.h | 11 +-
include/linux/srcu.h | 14 +-
init/Kconfig | 18 +-
kernel/cpu.c | 56 ++--
kernel/notifier.c | 3 +
kernel/power/Kconfig | 1 +
kernel/rcu/Makefile | 3 +-
kernel/rcu/rcu.h | 6 +
kernel/rcu/rcutorture.c | 66 ++--
kernel/rcu/srcu.c | 2 +-
kernel/rcu/tiny.c | 113 +------
kernel/rcu/tiny_plugin.h | 9 +-
kernel/rcu/tree.c | 355 +++++++++++++++------
kernel/rcu/tree.h | 62 +---
kernel/rcu/tree_plugin.h | 271 +++++-----------
kernel/rcu/tree_trace.c | 8 +-
kernel/softirq.c | 3 +-
lib/Kconfig.debug | 3 +-
mm/Kconfig | 1 +
security/tomoyo/Kconfig | 1 +
tools/testing/selftests/rcutorture/bin/cpus2use.sh | 2 +-
.../selftests/rcutorture/bin/kvm-recheck-rcu.sh | 18 ++
.../selftests/rcutorture/bin/kvm-test-1-run.sh | 9 +-
.../selftests/rcutorture/bin/parse-build.sh | 20 +-
.../selftests/rcutorture/bin/parse-console.sh | 2 +-
48 files changed, 657 insertions(+), 586 deletions(-)
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