Messages in this thread | | | Date | Wed, 21 May 2014 15:32:31 -0700 | From | "Paul E. McKenney" <> | Subject | [GIT PULL rcu/next] RCU commits for 3.16 |
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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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