コード例 #1
0
irqreturn_t
handle_irq_event_percpu(struct irq_desc *desc, struct irqaction *action)
{
    irqreturn_t retval = IRQ_NONE;
    unsigned int random = 0, irq = desc->irq_data.irq;

    do {
        irqreturn_t res;

        sec_debug_irq_log(irq, (void *)action->handler,
                          IRQ_HANDLER_ENTRY);

        trace_irq_handler_entry(irq, action);
        res = action->handler(irq, action->dev_id);
        trace_irq_handler_exit(irq, action, res);

        sec_debug_irq_log(irq, (void *)action->handler,
                          IRQ_HANDLER_EXIT);

        if (WARN_ONCE(!irqs_disabled(),"irq %u handler %pF enabled interrupts\n",
                      irq, action->handler))
            local_irq_disable();

        switch (res) {
        case IRQ_WAKE_THREAD:
            /*
             * Catch drivers which return WAKE_THREAD but
             * did not set up a thread function
             */
            if (unlikely(!action->thread_fn)) {
                warn_no_thread(irq, action);
                break;
            }

            irq_wake_thread(desc, action);

        /* Fall through to add to randomness */
        case IRQ_HANDLED:
            random |= action->flags;
            break;

        default:
            break;
        }

        retval |= res;
        action = action->next;
    } while (action);

    if (random & IRQF_SAMPLE_RANDOM)
        add_interrupt_randomness(irq);

    if (!noirqdebug)
        note_interrupt(irq, desc, retval);
    return retval;
}
コード例 #2
0
irqreturn_t
handle_irq_event_percpu(struct irq_desc *desc, struct irqaction *action)
{
	irqreturn_t retval = IRQ_NONE;
	unsigned int flags = 0, irq = desc->irq_data.irq;

	do {
		irqreturn_t res;
#ifdef CONFIG_SEC_DEBUG_RT_THROTTLE_ACTIVE
		unsigned long long start_time, end_time;

		start_time = sec_debug_clock();
#endif
		sec_debug_irq_log(irq, (void *)action->handler, 1);
		trace_irq_handler_entry(irq, action);
		exynos_ss_irq(irq, (void *)action->handler, (int)irqs_disabled(), ESS_FLAG_IN);
		res = action->handler(irq, action->dev_id);
		exynos_ss_irq(irq, (void *)action->handler, (int)irqs_disabled(), ESS_FLAG_OUT);
		trace_irq_handler_exit(irq, action, res);
		sec_debug_irq_log(irq, (void *)action->handler, 2);
#ifdef CONFIG_SEC_DEBUG_RT_THROTTLE_ACTIVE
		end_time = sec_debug_clock();
		if (start_time + 950000000 < end_time) {
			sec_debug_aux_log(SEC_DEBUG_AUXLOG_IRQ, "I:%llu %pf", start_time, action->handler);
		}
#endif

		if (WARN_ONCE(!irqs_disabled(),"irq %u handler %pF enabled interrupts\n",
			      irq, action->handler))
			local_irq_disable();

		switch (res) {
		case IRQ_WAKE_THREAD:
			/*
			 * Catch drivers which return WAKE_THREAD but
			 * did not set up a thread function
			 */
			if (unlikely(!action->thread_fn)) {
				warn_no_thread(irq, action);
				break;
			}

			irq_wake_thread(desc, action);

			/* Fall through to add to randomness */
		case IRQ_HANDLED:
			flags |= action->flags;
			break;

		default:
			break;
		}

		retval |= res;
		action = action->next;
	} while (action);

	add_interrupt_randomness(irq, flags);

	if (!noirqdebug)
		note_interrupt(irq, desc, retval);
	return retval;
}