poll_state_synchronize_srcu
bool poll_state_synchronize_srcu(struct srcu_struct *ssp, unsigned long cookie);
return poll_state_synchronize_srcu(srcu_ctlp, oldstate);
EXPORT_SYMBOL_GPL(poll_state_synchronize_srcu);
EXPORT_SYMBOL_GPL(poll_state_synchronize_srcu);
WARN_ON_ONCE(!poll_state_synchronize_srcu(&early_srcu, early_srcu_cookie));
if (!poll_state_synchronize_srcu(&tracepoint_srcu, snapshot->srcu_gp))