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

Joel Fernandes (Google)
2019-08-27T19:02:12Z

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@joelfernandes.org

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(-)

--
2.23.0.187.g17f5b7556c-goog