Re: light weight user level semaphores

[Linus Torvalds]

On Thu, 19 Apr 2001, Ingo Oeser wrote:
>
> Are you sure, you can implement SMP-safe, atomic operations (which you need
> for all up()/down() in user space) WITHOUT using privileged
> instructions on ALL archs Linux supports?

Why do you care?

Sure, there are broken architectures out there. They'd need system calls.
They'd be slow. That's THEIR problem.

No sane architecture has this limitation.

                Linus

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