rcu: Move rcu.h to new trivial-function style

This commit saves a few lines in kernel/rcu/rcu.h by moving to single-line
definitions for trivial functions, instead of the old style where the
two curly braces each get their own line.

Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
This commit is contained in:
Paul E. McKenney 2017-06-12 16:44:19 -07:00
commit 7414fac050