irqreturn_t ipi_interrupt()

in kernel/smp.c [405:436]

• 25 lines of code
• 6 McCabe index (conditional complexity)

irqreturn_t ipi_interrupt(int irq, void *dev_id)
{
	unsigned int cpu = smp_processor_id();
	struct ipi_data *ipi = &per_cpu(ipi_data, cpu);

	for (;;) {
		unsigned int msg;

		msg = get_er(MIPICAUSE(cpu));
		set_er(msg, MIPICAUSE(cpu));

		if (!msg)
			break;

		if (msg & (1 << IPI_CALL_FUNC)) {
			++ipi->ipi_count[IPI_CALL_FUNC];
			generic_smp_call_function_interrupt();
		}

		if (msg & (1 << IPI_RESCHEDULE)) {
			++ipi->ipi_count[IPI_RESCHEDULE];
			scheduler_ipi();
		}

		if (msg & (1 << IPI_CPU_STOP)) {
			++ipi->ipi_count[IPI_CPU_STOP];
			ipi_cpu_stop(cpu);
		}
	}

	return IRQ_HANDLED;
}