[PATCH tip/core/rcu 0/7] kfree_rcu() updates for v5.6

[Paul E. McKenney]

Hello!

The following series disentangles kfree_rcu() from core RCU and also
provides batching, all courtesy of Joel Fernandes:

1.	Add basic support for kfree_rcu() batching.

2.	Add kfree_rcu() performance tests.

3.	Make kfree_rcu() use a non-atomic ->monitor_todo.

4.	Add multiple in-flight batches of kfree_rcu() work.

5.	Add support for debug_objects debugging for kfree_rcu().

6.	Remove kfree_rcu() special casing and lazy-callback handling.

7.	Remove kfree_call_rcu_nobatch().

							Thanx, Paul

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

 Documentation/RCU/stallwarn.txt                 |   11 
 Documentation/admin-guide/kernel-parameters.txt |   21 +
 include/linux/rcu_segcblist.h                   |    2 
 include/linux/rcutiny.h                         |   11 
 include/linux/rcutree.h                         |    3 
 include/trace/events/rcu.h                      |   32 --
 kernel/rcu/rcu.h                                |   27 -
 kernel/rcu/rcu_segcblist.c                      |   25 -
 kernel/rcu/rcu_segcblist.h                      |   25 -
 kernel/rcu/rcuperf.c                            |  191 ++++++++++++--
 kernel/rcu/srcutree.c                           |    4 
 kernel/rcu/tiny.c                               |   28 +-
 kernel/rcu/tree.c                               |  327 ++++++++++++++++++++----
 kernel/rcu/tree.h                               |    1 
 kernel/rcu/tree_plugin.h                        |   48 ---
 kernel/rcu/tree_stall.h                         |    6 
 kernel/rcu/update.c                             |   10 
 17 files changed, 548 insertions(+), 224 deletions(-)