On Sat, Nov 25, 2006 at 12:51:17PM +0000, Ian Molton wrote:
> Russell King wrote:
> >It's quite possible to have:
> >
> >IRQ chip
> >0 irqchip_0
> >1 irqchip_0
> >2 irqchip_1
> >3 irqchip_0
> >4 irqchip_0
> >5 irqchip_1
> >6 irqchip_2
> >7 irqchip_2
> >8 irqchip_2
> >9 irqchip_1
> >
> >Where do you start '0' for each irqchip? How do you split the irq_desc
> >array between the irqchips?
>
> I see no reason why this couldnt continue to work 'as is' with the new
> behaviour only applying to irqchips with their own non-NULL irq_desc array.
That creates a multi-class system. Not nice from the maintainability
aspect.
Nevertheless, please produce patches to demonstrate this idea in detail.
> The other problem is integration with /proc, specifically the irq usage
> counter.
There's interrupt numbers elsewhere in procfs other than /proc/interrupts -
eg, the /proc/stat "intr" line is just one example.
--
Russell King
Linux kernel 2.6 ARM Linux - http://www.arm.linux.org.uk/
maintainer of:
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