* Paul Mundt <[email protected]> wrote:
> This is a simple patch for adding trivial interrupt priority support.
>
> I've added a ->set_prio() to the irq_chip which is implemented
> effectively the same way as ->set_type(), it's an optional component
> for those that really care about it.
i have no fundamental objections but it would be nice to actually
prototype this by implementing real priority support in the hardware:
both the i8259A and the IO-APIC/local-apic has such IRQ prioritization
features.
> + * IRQF_PRIO_HIGH - Give IRQ a high priority
> + * IRQF_PRIO_LOW - Give IRQ a low priority
this should be a numeric scale. (Preferably in the 1-99 range (the
hardware can then do a lower-resolution thing out of it), so that we can
directly map this to IRQ threads and SCHED_FIFO priorities in -rt.)
Ingo
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