-extern void *rcu_dereference(void *p);
-
-extern void *rcu_assign_pointer_sym(void **p, void *v);
-
-#define rcu_assign_pointer(p, v) \
- rcu_assign_pointer_sym((void **)(p), (v))
-
-extern void *rcu_xchg_pointer_sym(void **p, void *v);
-#define rcu_xchg_pointer(p, v) \
- rcu_xchg_pointer_sym((void **)(p), (v))
-
-extern void *rcu_publish_content_sym(void **p, void *v);
-#define rcu_publish_content(p, v) \
- rcu_publish_content_sym((void **)(p), (v))
-