[PATCH 0/5] kfree_rcu() additions for -rcu

[Joel Fernandes (Google)]

Hi,

This is a series on top of the patch "rcu/tree: Add basic support for kfree_rcu() batching".

Link: http://lore.kernel.org/r/20190814160411.58591-1-joel@xxxxxxxxxxxxxxxxx

It adds performance tests, some clean ups and removal of "lazy" RCU callbacks.

Now that kfree_rcu() is handled separately from call_rcu(), we also get rid of
kfree "lazy" handling from tree RCU as suggested by Paul which will be unused.
This also results in a nice negative delta as well.

Joel Fernandes (Google) (5):
rcu/rcuperf: Add kfree_rcu() performance Tests
rcu/tree: Add multiple in-flight batches of kfree_rcu work
rcu/tree: Add support for debug_objects debugging for kfree_rcu()
rcu: Remove kfree_rcu() special casing and lazy handling
rcu: Remove kfree_call_rcu_nobatch()

Documentation/RCU/stallwarn.txt               |  13 +-
.../admin-guide/kernel-parameters.txt         |  13 ++
include/linux/rcu_segcblist.h                 |   2 -
include/linux/rcutiny.h                       |   5 -
include/linux/rcutree.h                       |   1 -
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                          | 173 +++++++++++++++++-
kernel/rcu/srcutree.c                         |   4 +-
kernel/rcu/tiny.c                             |  29 ++-
kernel/rcu/tree.c                             | 145 ++++++++++-----
kernel/rcu/tree.h                             |   1 -
kernel/rcu/tree_plugin.h                      |  42 +----
kernel/rcu/tree_stall.h                       |   6 +-
16 files changed, 337 insertions(+), 206 deletions(-)

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2.23.0.187.g17f5b7556c-goog