[PATCH rcu 0/7] Torture-test updates for v6.3

From: Paul E. McKenney
Date: Wed Jan 04 2023 - 19:54:58 EST


Hello!

This series provides torture-testing updates:

1. rcu-tasks: Use accurate runstart time for RCU Tasks boot-time
testing, courtesy of Zqiang.

2. Seed torture_random_state on CPU.

3. rcu-tasks: Improve comments explaining tasks_rcu_exit_srcu
purpose, courtesy of Frederic Weisbecker.

4. Provide for initialization failure.

5. rcu-tasks: Remove preemption disablement around
srcu_read_[un]lock() calls, courtesy of Frederic Weisbecker.

6. Add tests using SLAB_TYPESAFE_BY_RCU.

7. Allow non-rtmutex lock types to be boosted, courtesy of "Joel
Fernandes (Google)".

8. rcu-tasks: Fix synchronize_rcu_tasks() VS zap_pid_ns_processes(),
courtesy of Frederic Weisbecker.

9. Make the rt_boost factor a tunable, courtesy of "Joel Fernandes
(Google)".

10. rcu-tasks: Make rude RCU-Tasks work well with CPU hotplug,
courtesy of Zqiang.

11. rcu-tasks: Handle queue-shrink/callback-enqueue race condition,
courtesy of Zqiang.

12. Drop sparse lock-acquisition annotations.

13. Fix hang during kthread shutdown phase, courtesy of "Joel
Fernandes (Google)".

Thanx, Paul

------------------------------------------------------------------------

b/include/linux/rcupdate.h | 2
b/kernel/locking/locktorture.c | 99 +++++++++--------
b/kernel/pid_namespace.c | 17 ++
b/kernel/rcu/rcutorture.c | 12 +-
b/kernel/rcu/refscale.c | 16 +-
b/kernel/rcu/tasks.h | 8 -
b/kernel/torture.c | 2
kernel/locking/locktorture.c | 12 +-
kernel/rcu/refscale.c | 236 +++++++++++++++++++++++++++++++++++++++++
kernel/rcu/tasks.h | 77 +++++++++----
kernel/torture.c | 2
11 files changed, 393 insertions(+), 90 deletions(-)