rcu_lockdep_current_cpu_online
bool rcu_lockdep_current_cpu_online(void);
(c || !rcu_is_watching() || !rcu_lockdep_current_cpu_online()) &&
!rcu_lockdep_current_cpu_online()
EXPORT_SYMBOL_GPL(rcu_lockdep_current_cpu_online);
if (!rcu_lockdep_current_cpu_online()) {