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Subject[PATCH rcu 0/18] RCU Tasks updates for v5.17
Hello!

This series provides RCU Tasks updates, including making stall warnings
use task_call_func() and providing better update-side scalability for
call_rcu_tasks_trace() and friends:

1. rcu-tasks: Don't remove tasks with pending IPIs from holdout list.

2. rcu-tasks: Create per-CPU callback lists.

3. rcu-tasks: Introduce ->percpu_enqueue_shift for dynamic queue
selection.

4. rcu-tasks: Convert grace-period counter to grace-period sequence
number.

5. rcu_tasks: Convert bespoke callback list to rcu_segcblist
structure.

6. rcu-tasks: Use spin_lock_rcu_node() and friends.

7. rcu-tasks: Inspect stalled task's trc state in locked state,
courtesy of Neeraj Upadhyay.

8. rcu-tasks: Add a ->percpu_enqueue_lim to the rcu_tasks structure.

9. rcu-tasks: Abstract checking of callback lists.

10. rcu-tasks: Abstract invocations of callbacks.

11. rcu-tasks: Use workqueues for multiple rcu_tasks_invoke_cbs()
invocations.

12. rcu-tasks: Make rcu_barrier_tasks*() handle multiple callback
queues.

13. rcu-tasks: Add rcupdate.rcu_task_enqueue_lim to set initial
queueing.

14. rcu-tasks: Count trylocks to estimate call_rcu_tasks() contention.

15. rcu-tasks: Avoid raw-spinlocked wakeups from
call_rcu_tasks_generic().

16. rcu-tasks: Use more callback queues if contention encountered.

17. rcu-tasks: Use separate ->percpu_dequeue_lim for callback
dequeueing.

18. rcu-tasks: Use fewer callbacks queues if callback flood ends.

Thanx, Paul

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

Documentation/admin-guide/kernel-parameters.txt | 16
b/Documentation/admin-guide/kernel-parameters.txt | 7
b/kernel/rcu/Kconfig | 2
b/kernel/rcu/tasks.h | 5
kernel/rcu/tasks.h | 668 ++++++++++++++++------
5 files changed, 518 insertions(+), 180 deletions(-)

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