srcu_notifier_call_chain
ret = srcu_notifier_call_chain(&cn->notifier_head, msg,
srcu_notifier_call_chain(&cpufreq_transition_notifier_list,
srcu_notifier_call_chain(&cpufreq_transition_notifier_list,
srcu_notifier_call_chain(&devfreq->transition_notifier_list,
srcu_notifier_call_chain(&devfreq->transition_notifier_list,
srcu_notifier_call_chain(&ssr->info->notifier_list,
srcu_notifier_call_chain(&ssr->info->notifier_list,
srcu_notifier_call_chain(&ssr->info->notifier_list,
srcu_notifier_call_chain(&ssr->info->notifier_list,
srcu_notifier_call_chain(&lease_notifier_chain, arg, lease);
extern int srcu_notifier_call_chain(struct srcu_notifier_head *nh,
EXPORT_SYMBOL_GPL(srcu_notifier_call_chain);