linux-stable/kernel/rcu
Uladzislau Rezki (Sony) a78d4a2a10 kvfree_rcu: Refactor kfree_rcu_monitor()
Currently we have three functions which depend on each other.
Two of them are quite tiny and the last one where the most
work is done. All of them are related to queuing RCU batches
to reclaim objects after a GP.

1. kfree_rcu_monitor(). It consist of few lines. It acquires a spin-lock
   and calls kfree_rcu_drain_unlock().

2. kfree_rcu_drain_unlock(). It also consists of few lines of code. It
   calls queue_kfree_rcu_work() to queue the batch.  If this fails,
   it rearms the monitor work to try again later.

3. queue_kfree_rcu_work(). This provides the bulk of the functionality,
   attempting to start a new batch to free objects after a GP.

Since there are no external users of functions [2] and [3], both
can eliminated by moving all logic directly into [1], which both
shrinks and simplifies the code.

Also replace comments which start with "/*" to "//" format to make it
unified across the file.

Signed-off-by: Uladzislau Rezki (Sony) <urezki@gmail.com>
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
2021-05-10 16:00:48 -07:00
..
Kconfig Merge branches 'doc.2021.01.06a', 'fixes.2021.01.04b', 'kfree_rcu.2021.01.04a', 'mmdumpobj.2021.01.22a', 'nocb.2021.01.06a', 'rt.2021.01.04a', 'stall.2021.01.06a', 'torture.2021.01.12a' and 'tortureall.2021.01.06a' into HEAD 2021-01-22 15:26:44 -08:00
Kconfig.debug Merge branch 'strictgp.2020.08.24a' into HEAD 2020-09-03 09:47:42 -07:00
Makefile rcuperf: Change rcuperf to rcuscale 2020-08-24 18:39:24 -07:00
rcu.h Merge branches 'doc.2021.01.06a', 'fixes.2021.01.04b', 'kfree_rcu.2021.01.04a', 'mmdumpobj.2021.01.22a', 'nocb.2021.01.06a', 'rt.2021.01.04a', 'stall.2021.01.06a', 'torture.2021.01.12a' and 'tortureall.2021.01.06a' into HEAD 2021-01-22 15:26:44 -08:00
rcu_segcblist.c rcu/nocb: Remove stale comment above rcu_segcblist_offload() 2021-03-15 13:54:54 -07:00
rcu_segcblist.h rcu/nocb: Code-style nits in callback-offloading toggling 2021-01-06 16:47:55 -08:00
rcuscale.c rcuscale: Add kfree_rcu() single-argument scale test 2021-03-08 14:18:07 -08:00
rcutorture.c Merge branches 'bitmaprange.2021.03.08a', 'fixes.2021.03.15a', 'kvfree_rcu.2021.03.08a', 'mmdumpobj.2021.03.08a', 'nocb.2021.03.15a', 'poll.2021.03.24a', 'rt.2021.03.08a', 'tasks.2021.03.08a', 'torture.2021.03.08a' and 'torturescript.2021.03.22a' into HEAD 2021-03-24 17:20:18 -07:00
refscale.c torture: Make refscale throttle high-rate printk()s 2021-01-06 17:17:20 -08:00
srcutiny.c srcu: Provide polling interfaces for Tiny SRCU grace periods 2021-01-04 13:53:38 -08:00
srcutree.c Merge branches 'doc.2021.01.06a', 'fixes.2021.01.04b', 'kfree_rcu.2021.01.04a', 'mmdumpobj.2021.01.22a', 'nocb.2021.01.06a', 'rt.2021.01.04a', 'stall.2021.01.06a', 'torture.2021.01.12a' and 'tortureall.2021.01.06a' into HEAD 2021-01-22 15:26:44 -08:00
sync.c rcu/sync: Simplify the state machine 2019-05-28 09:05:23 -07:00
tasks.h rcu-tasks: Add block comment laying out RCU Tasks Trace design 2021-03-08 14:22:02 -08:00
tiny.c rcu: Provide polling interfaces for Tiny RCU grace periods 2021-03-24 17:16:15 -07:00
tree.c kvfree_rcu: Refactor kfree_rcu_monitor() 2021-05-10 16:00:48 -07:00
tree.h Scheduler updates for v5.12: 2021-02-21 12:35:04 -08:00
tree_exp.h rcu/tree: Add a trace event for RCU CPU stall warnings 2021-03-15 13:53:24 -07:00
tree_plugin.h Merge branches 'bitmaprange.2021.03.08a', 'fixes.2021.03.15a', 'kvfree_rcu.2021.03.08a', 'mmdumpobj.2021.03.08a', 'nocb.2021.03.15a', 'poll.2021.03.24a', 'rt.2021.03.08a', 'tasks.2021.03.08a', 'torture.2021.03.08a' and 'torturescript.2021.03.22a' into HEAD 2021-03-24 17:20:18 -07:00
tree_stall.h rcu/tree: Add a trace event for RCU CPU stall warnings 2021-03-15 13:53:24 -07:00
update.c rcu: Enable rcu_normal_after_boot unconditionally for RT 2021-01-04 13:43:51 -08:00