+#define defer_rcu defer_rcu_bp
+#define rcu_defer_register_thread rcu_defer_register_thread_bp
+#define rcu_defer_unregister_thread rcu_defer_unregister_thread_bp
+#define rcu_defer_barrier rcu_defer_barrier_bp
+#define rcu_defer_barrier_thread rcu_defer_barrier_thread_bp
+