die_chain 536 kernel/notifier.c static ATOMIC_NOTIFIER_HEAD(die_chain); die_chain 551 kernel/notifier.c return atomic_notifier_call_chain(&die_chain, val, &args); die_chain 558 kernel/notifier.c return atomic_notifier_chain_register(&die_chain, nb); die_chain 564 kernel/notifier.c return atomic_notifier_chain_unregister(&die_chain, nb);