[PATCH rcu 0/13] RCU update-side scalability test updates for v6.6

From: Paul E. McKenney
Date: Mon Jul 17 2023 - 14:08:46 EST


Hello!

This series contains update-side RCU scalability tests:

1. Permit blocking delays between writers.

2. Add CONFIG_PREEMPT_DYNAMIC=n to NOPREEMPT scenario.

3. Fix gp_async_max typo: s/reader/writer/.

4. Fix uninitalized use of wait_queue_head_t, courtesy of Waiman
Long.

5. Add minruntime module parameter.

6. Add a "jiffies" test.

7. Print out full set of module parameters.

8. Print out full set of kfree_rcu parameters.

9. Measure grace-period kthread CPU time.

10. Add kfree_by_call_rcu and kfree_mult to documentation.

11. Print grace-period kthread CPU time, if recorded.

12. Measure RCU Tasks Trace grace-period kthread CPU time.

13. Add RCU Tasks Rude testing.

14. fix building with RCU_TINY, courtesy of Arnd Bergmann.

15. Move rcu_scale_writer() schedule_timeout_uninterruptible()
to _idle(), courtesy of Zqiang.

16. Add CONFIG_PREEMPT_DYNAMIC=n to TRACE01 scenario.

Thanx, Paul

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

Documentation/admin-guide/kernel-parameters.txt | 17 +-
b/Documentation/admin-guide/kernel-parameters.txt | 5
b/include/linux/rcupdate_trace.h | 1
b/kernel/rcu/rcu.h | 3
b/kernel/rcu/rcuscale.c | 4
b/kernel/rcu/refscale.c | 3
b/kernel/rcu/tasks.h | 6
b/tools/testing/selftests/rcutorture/bin/kvm-recheck-rcuscale.sh | 8
b/tools/testing/selftests/rcutorture/configs/rcuscale/CFcommon | 2
b/tools/testing/selftests/rcutorture/configs/rcuscale/TRACE01 | 2
b/tools/testing/selftests/rcutorture/configs/refscale/NOPREEMPT | 1
kernel/rcu/rcu.h | 17 +-
kernel/rcu/rcuscale.c | 83 +++++++++-
kernel/rcu/refscale.c | 34 +++-
kernel/rcu/tasks.h | 13 +
15 files changed, 180 insertions(+), 19 deletions(-)