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Subject[PATCH rcu 0/7] Polled grace-period updates for v6.1
Hello!

This series adds support for full-state polled RCU grace periods, both
normal and expedited:

1. Add full-sized polling for get_completed*() and poll_state*().

2. Add full-sized polling for get_state().

3. Abstract synchronous and polled API testing.

4. Allow per-RCU-flavor polled double-GP check.

5. Verify RCU reader prevents full polling from completing.

6. Remove redundant RTWS_DEF_FREE check.

7. Verify long-running reader prevents full polling from completing.

8. Add full-sized polling for start_poll().

9. Add full-sized polling for start_poll_expedited().

10. Remove blank line from poll_state_synchronize_rcu() docbook
header.

11. Add full-sized polling for cond_sync_full().

12. Add full-sized polling for cond_sync_exp_full().

13. Disable run-time single-CPU grace-period optimization.

14. Set rcu_data structures' initial ->gpwrap value to true.

15. rcu-tasks: Remove grace-period fast-path rcu-tasks helper.

16. Make synchronize_rcu() fast path update ->gp_seq counters.

17. Remove expedited grace-period fast-path forward-progress helper.

18. Make synchronize_rcu_expedited() fast path update
.expedited_sequence.

19. Remove ->rgos_polled field from rcu_gp_oldstate structure.

20. Adjust rcu_poll_need_2gp() for rcu_gp_oldstate field removal.

21. Make synchronize_rcu() fastpath update only boot-CPU counters.

22. Use 1-suffixed variable in rcu_torture_write_types() check.

23. Expand rcu_torture_write_types() first "if" statement.

24. Add functions to compare grace-period state values.

25. Limit read-side polling-API testing.

Thanx, Paul

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

b/include/linux/rcupdate.h | 3
b/include/linux/rcutiny.h | 9
b/include/linux/rcutree.h | 8
b/kernel/rcu/rcutorture.c | 9
b/kernel/rcu/tiny.c | 10 +
b/kernel/rcu/tree.c | 76 +++++++-
b/kernel/rcu/tree_exp.h | 18 +
include/linux/rcupdate.h | 21 ++
include/linux/rcutiny.h | 41 ++++
include/linux/rcutree.h | 34 +++
kernel/rcu/rcutorture.c | 412 +++++++++++++++++++++++++++++++++------------
kernel/rcu/tree.c | 230 +++++++++++++++++--------
kernel/rcu/tree_exp.h | 35 +++
13 files changed, 720 insertions(+), 186 deletions(-)

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