Re: [RCF PATCH] genirq/debugfs: Triggering of interrupts from userspace

[Thomas Gleixner]

On Thu, 20 Jul 2017, Marc Zyngier wrote:
> When developing new (and therefore buggy) interrupt related
> code, it can sometimes be useful to inject interrupts without
> having to rely on a device to actually generate them.
> 
> This functionnality relies on the irqchip driver to expose
> a irq_set_irqchip_state(IRQCHIP_STATE_PENDING) callback.

I like that, but can we please extend that to utilize the irq resend
mechanism:

        desc = ....;

        chip_bus_lock(desc);
        raw_spin_lock_irq(&desc->lock);

        if (has_set_state(desc))
                set_state(desc);
        else
                check_irq_resend(desc);

or something to that effect?

Thanks,

        tglx