static irqreturn_t handle_ipi()

in kernel/smp.c [44:74]

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

static irqreturn_t handle_ipi(int irq, void *dev)
{
	unsigned long *stats = this_cpu_ptr(&ipi_data)->stats;

	while (true) {
		unsigned long ops;

		ops = xchg(&this_cpu_ptr(&ipi_data)->bits, 0);
		if (ops == 0)
			return IRQ_HANDLED;

		if (ops & (1 << IPI_RESCHEDULE)) {
			stats[IPI_RESCHEDULE]++;
			scheduler_ipi();
		}

		if (ops & (1 << IPI_CALL_FUNC)) {
			stats[IPI_CALL_FUNC]++;
			generic_smp_call_function_interrupt();
		}

		if (ops & (1 << IPI_IRQ_WORK)) {
			stats[IPI_IRQ_WORK]++;
			irq_work_run();
		}

		BUG_ON((ops >> IPI_MAX) != 0);
	}

	return IRQ_HANDLED;
}