Re: Semaphore assembly-code bug

From: Andi Kleen
Date: Fri Oct 29 2004 - 21:19:56 EST


Linus Torvalds <torvalds@xxxxxxxx> writes:

> Anyway, it's quite likely that for several CPU's the fastest sequence ends
> up actually being
>
> movl 4(%esp),%ecx
> movl 8(%esp),%edx
> movl 12(%esp),%eax
> addl $16,%esp
>
> which is also one of the biggest alternatives.

For K8 it should be the fastest way. K7 probably too.

-Andi
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/