Messages in this thread | | | Date | Sat, 11 Jun 2005 16:50:14 -0700 (PDT) | From | Daniel Walker <> | Subject | Re: [PATCH] local_irq_disable removal |
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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
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