lkml.org 
[lkml]   [2006]   [Nov]   [25]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [Kernel-discuss] RFC - platform device, IRQs and SoC devices
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:
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2006-11-25 14:09    [W:1.716 / U:0.140 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site