Re: [PATCH] local_irq_disable removal

Daniel Walker
2005-06-11T23:50:34Z

On Sun, 12 Jun 2005, Thomas Gleixner wrote:

> On Sat, 2005-06-11 at 13:51 -0700, Daniel Walker wrote:
> > On Sat, 11 Jun 2005, Ingo Molnar wrote:
>
> > Interesting .. So "cli" takes 7 cycles , "sti" takes 7 cycles. The current
> > method does "lea" which takes 1 cycle, and "or" which takes 1 cycle. I'm
> > not sure if there is any function call overhead .. So the soft replacment
> > of cli/sti is 70% faster on a per instruction level .. So it's at least
> > not any slower .. Does everyone agree on that?
>
> No, because x86 is not the whole universe

It's only implemented on x86 .

Daniel