do_ext_call_interrupt 985 arch/s390/kernel/smp.c if (register_external_irq(EXT_IRQ_EMERGENCY_SIG, do_ext_call_interrupt)) do_ext_call_interrupt 988 arch/s390/kernel/smp.c if (register_external_irq(EXT_IRQ_EXTERNAL_CALL, do_ext_call_interrupt))