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

[Paul E. McKenney]

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(-)