rcu: Improve tree_plugin.h comments and add code cleanups

This commit cleans up some comments and code in kernel/rcu/tree_plugin.h.

Signed-off-by: Zhouyi Zhou <zhouzhouyi@gmail.com>
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
This commit is contained in:
Zhouyi Zhou 2021-10-24 08:36:34 +08:00 • committed by Paul E. McKenney
commit 17ea371882