Re: broken local_t on i386

Christoph Lameter
2006-06-12T18:42:15Z

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.

A simple dec/inc <absolute location> would be nicely suitable for
inlining per processor counters.