Messages in this thread | | | Date | Wed, 24 Nov 2010 14:54:38 +0100 (CET) | From | Thomas Gleixner <> | Subject | Re: [question] NR_IRQS in genirq |
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On Wed, 24 Nov 2010, Mark Brown wrote:
> On Wed, Nov 24, 2010 at 09:46:06PM +0800, Haojian Zhuang wrote: > > > My hardware environment is ARM. Each machine description can specify > > nr_irqs. In my implementation of PXA, NR_IRQS is fixed for SoC > > internal IRQs. And there's some additional board IRQs, we arrange them > > between NR_IRQS and nr_irqs. So nr_irqs will be larger than NR_IRQS if > > board IRQs exists. > > Most ARM platforms have come up with some Kconfig gunk to allow boards > to extend this for off-SoC GPIOs. It'd be really nice to get rid of > NR_IRQS and stop having to worry about this at all :(
I mean with sparse_irq you can set NR_IRQS insanely high w/o increasing memory consumption. That's the whole point.
Thanks,
tglx
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