Re: [patch] oprofile + ppc750cx perfmon

[Bryan Rittmeyer]

On Tue, Mar 25, 2003 at 10:45:02AM +0100, Benjamin Herrenschmidt wrote:
> I also think we could actually be smarter and only
> soft-disable IRQs with a flag in the descriptor, and hard disable
> them if and only if they actually occur while disabled.

yup. minimizing open_pic I/O could be a big win. the fact that
the PIC shows up _way_ ahead of the network driver and stack is
pretty freakish compared to a profile on x86 using io-apic
(the legacy x86 pic has similar but less severe issues as open_pic).

-Bryan