* Daniel Walker <[email protected]> wrote:
> It makes porting to powerpc for instance harder because some
> controllers have ack(), and some don't.. Some have mask(), and some
> don't.. So you end up with what Sergei is doing which is flat out make
> ack == eoi .. Where you have multiple irq chip types each one really
> needs an individual evaluation ..
this isnt really a problem. The current situation is simply hacky,
because right now there's no 'threaded' flow type at all. The x86 code
just moves the code away from fasteoi:
#ifdef CONFIG_PREEMPT_HARDIRQS
set_irq_chip_and_handler_name(irq, &ioapic_chip,
handle_level_irq, "level-threaded");#else
set_irq_chip_and_handler_name(irq, &ioapic_chip,
handle_fasteoi_irq, "fasteoi");
#endif
what should happen is a handle_thread_irq irq-flow handler that will
first mask, and then ack or eoi (whichever callbacks is available), and
thus can and will handle both fasteoi, edge and level irqs.
Ingo
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