On Monday 12 June 2006 20:42, Christoph Lameter wrote:
> On Mon, 12 Jun 2006, Andi Kleen wrote:
> > Saving two instructions? And PDA is usually in L1. I doubt you could
> > benchmark a difference.
>
> The two instructions occur over and over again for each PDA reference. And
> then there are now two more instruction for disabling preempt and
> reenabling preempt.
Only for those who set CONFIG_OVERHEAD
> A simple dec/inc <absolute location> would be nicely suitable for
> inlining per processor counters.
Possible, but is it worth reinventing the linker?
-Andi
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