Re: [PATCH] use generic_handle_irq, handle_level_irq, handle_percpu_irq

[Atsushi Nemoto <anemo@mba.ocn.ne.jp>]

On Thu, 23 Nov 2006 18:42:38 +0300, Sergei Shtylyov <sshtylyov@ru.mvista.com> 
wrote:
> >>   BTW, isn't IRQ7 per-CPU?
> 
> > Yes and no.  On many CPUs IRQ 7 can be configured at reset time as either
> > the count / compare interrupt or a CPU interrupt just like the others.
> > It always used to be a normal CPU interrupt for R2000 class CPUs.
> 
>     Nevertheless, IRQ7 having percpu flow when it's known to be from 
> count/compare would make the timer stuff faster, I assume...

It would be faster indeed, but note that handle_percpu_irq() depends
on CONFIG_SMP for now.

---
Atsushi Nemoto