rcu: Remove unused variable rcu_perf_writer_state

The variable rcu_perf_writer_state is declared and initialized,
but is never actually referenced. Remove it to clean code.

Signed-off-by: Ethan Hansen <1ethanhansen@gmail.com>
[ paulmck: Also removed unused macros assigned to that variable. ]
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
This commit is contained in:
Ethan Hansen 2019-08-07 17:27:32 -07:00 • committed by Paul E. McKenney
commit b3ffb206dd