void (*read_quiescent_state)(void);
void (*update_call_rcu)(struct rcu_head *head,
void (*func)(struct rcu_head *head));
void (*read_quiescent_state)(void);
void (*update_call_rcu)(struct rcu_head *head,
void (*func)(struct rcu_head *head));
void (*thread_online)(void);
void (*register_thread)(void);
void (*unregister_thread)(void);
void (*thread_online)(void);
void (*register_thread)(void);
void (*unregister_thread)(void);
.read_lock = rcu_read_lock, \
.read_unlock = rcu_read_unlock, \
.read_lock = rcu_read_lock, \
.read_unlock = rcu_read_unlock, \
.read_quiescent_state = rcu_quiescent_state, \
.update_call_rcu = call_rcu, \
.update_synchronize_rcu = synchronize_rcu, \
.read_quiescent_state = rcu_quiescent_state, \
.update_call_rcu = call_rcu, \
.update_synchronize_rcu = synchronize_rcu, \
.thread_online = rcu_thread_online, \
.register_thread = rcu_register_thread, \
.unregister_thread = rcu_unregister_thread,\
.thread_online = rcu_thread_online, \
.register_thread = rcu_register_thread, \
.unregister_thread = rcu_unregister_thread,\