+#define defer_rcu defer_rcu_qsbr
+#define rcu_defer_register_thread rcu_defer_register_thread_qsbr
+#define rcu_defer_unregister_thread rcu_defer_unregister_thread_qsbr
+#define rcu_defer_barrier rcu_defer_barrier_qsbr
+#define rcu_defer_barrier_thread rcu_defer_barrier_thread_qsbr
+