[GIT PULL rcu/next] RCU commits for 3.16

From: Paul E. McKenney
Date: Wed May 21 2014 - 18:32:45 EST

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Hello, Ingo,

The changes in this series include:

1. Update RCU documentation. These were posted to LKML at
https://lkml.org/lkml/2014/4/28/634.

2. Miscellaneous fixes. These were posted to LKML at
https://lkml.org/lkml/2014/4/28/645.

3. Torture-test changes. These were posted to LKML at
https://lkml.org/lkml/2014/4/28/667.

4. Variable-name renaming cleanup, sent separately due to conflicts.
This was posted to LKML at https://lkml.org/lkml/2014/5/13/854.

5. Patch to suppress RCU stall warnings while sysrq requests are
being processed. This patch is the RCU portions of the patch
that Rik posted to LKML at https://lkml.org/lkml/2014/4/29/457.
The reason for pushing this patch ahead instead of waiting until
3.17 is that the NMI-based stack traces are messing up sysrq
output, and in some cases also messing up the system as well.

All of these have been exposed to -next testing.
These changes are available in the git repository at:

git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu.git rcu/next

for you to fetch changes up to 61f38db3e3c0e4c3be0858750e2cabeadaecac0c:

rcu: Provide API to suppress stall warnings while sysrc runs (2014-05-19 10:52:04 -0700)

Thanx, Paul

----------------------------------------------------------------
Andreea-Cristina Bernat (3):
rcu: Add event tracing to dyntick_save_progress_counter().
rcu: Consolidate kfree_call_rcu() to use rcu_state pointer
rcu: Merge rcu_sched_force_quiescent_state() with rcu_force_quiescent_state()

Christoph Lameter (1):
rcu: Replace __this_cpu_ptr() uses with raw_cpu_ptr()

Eric Dumazet (1):
softirq: A single rcu_bh_qs() call per softirq set is enough

Himangi Saraogi (2):
rcu: Protect uses of ->jiffies_stall with ACCESS_ONCE()
rcu: Replace NR_CPUS with nr_cpu_ids

Iulia Manda (4):
rcu: Remove unused rcu_data structure field
rcu: Protect uses of jiffies_stall field with ACCESS_ONCE()
rcu: Remove "extern" from function declaration in include/linux/rcupdate.h
torture: Notice if an all-zero cpumask is passed inside a critical section

Liu Ping Fan (1):
rcu: Fix incorrect notes for code

Paul E. McKenney (50):
documentation: Update sysfs path for rcu_cpu_stall_suppress
documentation: Record rcu_dereference() value mishandling
documentation: Update API documentation
rcu: Protect ->gp_flags accesses with ACCESS_ONCE()
rcu: Print negatives for stall-warning counter wraparound
rcu: Update cpu_needs_another_gp() for futures from non-NOCB CPUs
rcu: Make callers awaken grace-period kthread
rcu: Document RCU_INIT_POINTER()'s lack of ordering guarantees
rcu: Bind RCU grace-period kthreads if NO_HZ_FULL
rcu: Make large and small sysidle systems use same state machine
rcutorture: Add forward-progress checking for writer
torture: Remove obsolete builddir options
torture: Add batch headers "--dryrun sched"
torture: Make parse-rcutorture.sh less RCU-specific
torture: Rename RCU_INITRD to TORTURE_INITRD
torture: Intensify locking test
torture: Allow variations of "defconfig" to be specified
torture: Rename RCU_KMAKE_ARG to TORTURE_KMAKE_ARG
torture: Rename RCU_BOOTARGS to TORTURE_BOOTARGS
torture: Rename RCU_BUILDONLY to TORTURE_BUILDONLY
torture: Rename RCU_QEMU_INTERACTIVE to TORTURE_QEMU_INTERACTIVE
torture: Rename RCU_QEMU_MAC to TORTURE_QEMU_MAC
torture: Rename RCU_QEMU_ARG to TORTURE_QEMU_ARG
torture: Rename RCU_QEMU_CMD to TORTURE_QEMU_CMD
torture: Make config-fragment filtering RCU-independent
torture: Make "--dryrun script" output self-sufficient
torture: Make "--dryrun script" use same environment as normal run
rcutorture: Print negatives for SRCU counter wraparound
torture: Include "Stopping" string to torture_kthread_stopping()
torture: Report diagnostics from qemu
torture: Increase stutter-end intensity
torture: Permit multi-word qemu and boot arguments
torture: Choose bzImage location based on architecture
torture: Add tracing-enabled variant of TREE02
torture: Dump ftrace buffer when the RCU grace period stalls
rcutorture: Export RCU grace-period kthread wait state to rcutorture
percpu: Fix raw_cpu_inc_return()
sched,rcu: Make cond_resched() report RCU quiescent states
rcutorture: Make rcu_torture_reader() use cond_resched()
torture: Better summary diagnostics for build failures
rcutorture: Check for rcu_torture_fqs creation errors
torture: Use elapsed time to detect hangs
rcutorture: Test RCU-sched primitives in TREE_PREEMPT_RCU kernels
rcutorture: Add tests for get_state_synchronize_rcu()
rcutorture: Explicitly test synchronous grace-period primitives
rcutorture: Note diffs from git commits
rcutorture: Run rcu_torture_writer at normal priority
locktorture: Remove reference to nonexistent Kconfig parameter
torture: Check for multiple concurrent torture tests
Merge branches 'doc.2014.04.29a', 'fixes.2014.04.29a' and 'torture.2014.05.14a' into HEAD

Pranith Kumar (3):
rcu: Remove duplicate resched_cpu() declaration
torture: Remove __init from torture_init_begin/end
torture: Remove unused definition

Rashika Kheria (1):
rcutorture: Mark function as static in kernel/rcu/torture.c

Rik van Riel (1):
rcu: Provide API to suppress stall warnings while sysrc runs

Thomas Gleixner (1):
rcutorture: Add missing destroy_timer_on_stack()

Uma Sharma (1):
rcu: Variable name changed in tree_plugin.h and used in tree.c

Documentation/RCU/00-INDEX | 2 +
Documentation/RCU/checklist.txt | 12 +-
Documentation/RCU/rcu_dereference.txt | 371 +++++++++++++++++++++
Documentation/RCU/stallwarn.txt | 2 +-
Documentation/RCU/whatisRCU.txt | 55 ++-
include/linux/percpu.h | 2 +-
include/linux/rcupdate.h | 72 +++-
include/linux/rcutiny.h | 4 +
include/linux/rcutree.h | 1 +
include/linux/torture.h | 8 +-
kernel/locking/locktorture.c | 10 +-
kernel/rcu/rcutorture.c | 217 +++++++++---
kernel/rcu/tiny_plugin.h | 8 +-
kernel/rcu/tree.c | 309 ++++++++++++-----
kernel/rcu/tree.h | 11 +-
kernel/rcu/tree_plugin.h | 136 ++------
kernel/rcu/update.c | 30 ++
kernel/sched/core.c | 7 +-
kernel/softirq.c | 4 +-
kernel/torture.c | 40 ++-
.../testing/selftests/rcutorture/bin/configinit.sh | 2 +-
.../testing/selftests/rcutorture/bin/functions.sh | 48 ++-
.../testing/selftests/rcutorture/bin/kvm-build.sh | 6 +-
.../selftests/rcutorture/bin/kvm-recheck-lock.sh | 2 +-
.../selftests/rcutorture/bin/kvm-recheck-rcu.sh | 2 +-
.../selftests/rcutorture/bin/kvm-recheck.sh | 24 +-
.../selftests/rcutorture/bin/kvm-test-1-run.sh | 47 ++-
tools/testing/selftests/rcutorture/bin/kvm.sh | 142 ++++----
.../bin/{parse-rcutorture.sh => parse-torture.sh} | 22 +-
.../selftests/rcutorture/configs/rcu/TREE02-T | 25 ++
.../selftests/rcutorture/configs/rcu/TREE08.boot | 1 +
31 files changed, 1210 insertions(+), 412 deletions(-)
create mode 100644 Documentation/RCU/rcu_dereference.txt
rename tools/testing/selftests/rcutorture/bin/{parse-rcutorture.sh => parse-torture.sh} (79%)
create mode 100644 tools/testing/selftests/rcutorture/configs/rcu/TREE02-T
create mode 100644 tools/testing/selftests/rcutorture/configs/rcu/TREE08.boot

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Next message: Luck, Tony: "RE: [RFC] x86_64: A real proposal for iret-less return to kernel"
Previous message: Andi Kleen: "Re: [RFC] x86_64: A real proposal for iret-less return to kernel"
Next in thread: Ingo Molnar: "Re: [GIT PULL rcu/next] RCU commits for 3.16"
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