rcu: shrink rcutiny by making synchronize_rcu_bh() be inline

Because synchronize_rcu_bh() is identical to synchronize_sched(),
make the former a static inline invoking the latter, saving the
overhead of an EXPORT_SYMBOL_GPL() and the duplicate code.

Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>

1 files changed, 11 insertions, 1 deletions

diff --git a/include/linux/rcutiny.h b/include/linux/rcutiny.h
index a5195875480..bbeb55b7709 100644
--- a/include/linux/rcutiny.h
+++ b/include/linux/rcutiny.h
@@ -74,7 +74,17 @@ static inline void rcu_sched_force_quiescent_state(void)
 {
 }
 
-#define synchronize_rcu synchronize_sched
+extern void synchronize_sched(void);
+
+static inline void synchronize_rcu(void)
+{
+        synchronize_sched();
+}
+
+static inline void synchronize_rcu_bh(void)
+{
+        synchronize_sched();
+}
 
 static inline void synchronize_rcu_expedited(void)
 {