Hello Linus,
Once the merge window opens, please pull the latest RCU git tree from:
git://git.kernel.org/pub/scm/linux/kernel/git/frederic/linux-dynticks.git tags/rcu-next-v6.7
# HEAD: d97ae6474ca0411bb8c2696e5764ec946dba43d0:
Merge branches 'rcu/torture', 'rcu/fixes', 'rcu/docs', 'rcu/refscale', 'rcu/tasks' and 'rcu/stall' into rcu/next (2023-10-23 15:24:11 +0200)
----------------------------------------------------------------
RCU pull request for v6.7
This pull request contains the following branches:
rcu/torture: RCU torture, locktorture and generic torture infrastructure
updates that include various fixes, cleanups and consolidations.
Among the user visible things, ftrace dumps can now be found into
their own file, and module parameters get better documented and
reported on dumps.
rcu/fixes: Generic and misc fixes all over the place. Some highlights:
* Hotplug handling has seen some light cleanups and comments.
* An RCU barrier can now be triggered through sysfs to serialize
memory stress testing and avoid OOM.
* Object information is now dumped in case of invalid callback
invocation.
* Also various SRCU issues, too hard to trigger to deserve urgent
pull requests, have been fixed.
rcu/docs: RCU documentation updates
rcu/refscale: RCU reference scalability test minor fixes and doc
improvements.
rcu/tasks: RCU tasks minor fixes
rcu/stall: Stall detection updates. Introduce RCU CPU Stall notifiers
that allows a subsystem to provide informations to help debugging.
Also cure some false positive stalls.
----------------------------------------------------------------
Arnd Bergmann (1):
rcu: Include torture_sched_setaffinity() declaration
Catalin Marinas (1):
rcu: kmemleak: Ignore kmemleak false positives when RCU-freeing objects
Dan Carpenter (1):
locktorture: Check the correct variable for allocation failure
Denis Arefev (1):
srcu: Fix srcu_struct node grpmask overflow on 64-bit systems
Frederic Weisbecker (10):
rcu: Use rcu_segcblist_segempty() instead of open coding it
rcu: Assume IRQS disabled from rcu_report_dead()
rcu: Assume rcu_report_dead() is always called locally
rcu: Remove references to rcu_migrate_callbacks() from diagrams
rcu: Conditionally build CPU-hotplug teardown callbacks
rcu: Standardize explicit CPU-hotplug calls
rcu: Comment why callbacks migration can't wait for CPUHP_RCUTREE_PREP
srcu: Fix callbacks acceleration mishandling
srcu: Only accelerate on enqueue time
Merge branches 'rcu/torture', 'rcu/fixes', 'rcu/docs', 'rcu/refscale', 'rcu/tasks' and 'rcu/stall' into rcu/next
Jiapeng Chong (1):
rcu-tasks: Make rcu_tasks_lazy_ms static
Joel Fernandes (Google) (7):
rcu/tree: Defer setting of jiffies during stall reset
Revert "checkpatch: Error out if deprecated RCU API used"
srcu: Fix error handling in init_srcu_struct_fields()
rcu/tree: Remove superfluous return from void call_rcu* functions
rcutorture: Fix stuttering races and other issues
rcutorture: Copy out ftrace into its own console file
rcutorture: Replace schedule_timeout*() 1-jiffy waits with HZ/20
Matthew Wilcox (Oracle) (1):
rcu: Describe listRCU read-side guarantees
Paul E. McKenney (26):
rcu: Add RCU CPU stall notifier
rcutorture: Add test of RCU CPU stall notifiers
rcu-tasks: Add printk()s to localize boot-time self-test hang
rcu-tasks: Pull sampling of ->percpu_dequeue_lim out of loop
refscale: Fix misplaced data re-read
refscale: Print out additional module parameters
doc: Add refscale.lookup_instances to kernel-parameters.txt
rcu: Add sysfs to provide throttled access to rcu_barrier()
rcu: Eliminate rcu_gp_slow_unregister() false positive
torture: Share torture_random_state with torture_shuffle_tasks()
torture: Make kvm-recheck.sh use mktemp
torture: Make torture_hrtimeout_ns() take an hrtimer mode parameter
torture: Move rcutorture_sched_setaffinity() out of rcutorture
locktorture: Add readers_bind and writers_bind module parameters
rcutorture: Add CONFIG_DEBUG_OBJECTS to RCU Tasks testing
locktorture: Alphabetize torture_param() entries
locktorture: Consolidate "if" statements in lock_torture_writer()
locktorture: Add acq_writer_lim to complain about long acquistion times
torture: Print out torture module parameters
torture: Make torture.sh refscale testing qualify verbose_batched
locktorture: Add new module parameters to lock_torture_print_module_parms()
locktorture: Add call_rcu_chains module parameter
doc: Catch-up update for locktorture module parameters
locktorture: Rename readers_bind/writers_bind to bind_readers/bind_writers
torture: Add kvm.sh --debug-info argument
torture: Convert parse-console.sh to mktemp
Wei Zhang (1):
Documentation: RCU: Fix section numbers after adding Section 7 in whatisRCU.rst
Yue Haibing (1):
rcu: Remove unused function declaration rcu_eqs_special_set()
Zhen Lei (5):
rcu: Delete a redundant check in rcu_check_gp_kthread_starvation()
rcu: Don't redump the stalled CPU where RCU GP kthread last ran
rcu: Eliminate check_cpu_stall() duplicate code
mm: Remove kmem_valid_obj()
rcu: Dump memory object info if callback function is invalid
Zqiang (1):
rcutorture: Traverse possible cpu to set maxcpu in rcu_nocb_toggle()
.../Expedited-Grace-Periods.rst | 2 +-
.../Memory-Ordering/TreeRCU-callback-registry.svg | 9 -
.../RCU/Design/Memory-Ordering/TreeRCU-gp-fqs.svg | 4 +-
.../RCU/Design/Memory-Ordering/TreeRCU-gp.svg | 13 +-
.../RCU/Design/Memory-Ordering/TreeRCU-hotplug.svg | 4 +-
.../RCU/Design/Requirements/Requirements.rst | 4 +-
Documentation/RCU/listRCU.rst | 9 +
Documentation/RCU/whatisRCU.rst | 4 +-
Documentation/admin-guide/kernel-parameters.txt | 70 +++++-
arch/arm64/kernel/smp.c | 4 +-
arch/powerpc/kernel/smp.c | 2 +-
arch/s390/kernel/smp.c | 2 +-
arch/x86/kernel/smpboot.c | 2 +-
include/linux/interrupt.h | 2 +-
include/linux/rcu_notifier.h | 32 +++
include/linux/rcupdate.h | 2 -
include/linux/rcutiny.h | 2 +-
include/linux/rcutree.h | 17 +-
include/linux/slab.h | 5 +-
include/linux/torture.h | 8 +-
kernel/cpu.c | 13 +-
kernel/locking/locktorture.c | 214 +++++++++++++-----
kernel/rcu/rcu.h | 17 +-
kernel/rcu/rcu_segcblist.c | 4 +-
kernel/rcu/rcutorture.c | 37 +++-
kernel/rcu/refscale.c | 6 +-
kernel/rcu/srcutiny.c | 1 +
kernel/rcu/srcutree.c | 74 +++++--
kernel/rcu/tasks.h | 11 +-
kernel/rcu/tiny.c | 1 +
kernel/rcu/tree.c | 242 +++++++++++++++------
kernel/rcu/tree.h | 4 +
kernel/rcu/tree_exp.h | 6 +-
kernel/rcu/tree_stall.h | 135 ++++++++----
kernel/rcu/update.c | 9 +-
kernel/torture.c | 75 +++----
mm/slab_common.c | 41 +---
mm/util.c | 4 +-
scripts/checkpatch.pl | 9 -
.../testing/selftests/rcutorture/bin/functions.sh | 29 +++
.../selftests/rcutorture/bin/kvm-recheck.sh | 2 +-
tools/testing/selftests/rcutorture/bin/kvm.sh | 17 +-
.../selftests/rcutorture/bin/parse-console.sh | 9 +-
tools/testing/selftests/rcutorture/bin/torture.sh | 2 +-
.../selftests/rcutorture/configs/rcu/TRACE02 | 1 +
45 files changed, 809 insertions(+), 351 deletions(-)
create mode 100644 include/linux/rcu_notifier.h
mode change 100644 => 100755 tools/testing/selftests/rcutorture/bin/functions.sh
