Re: [patch] 2.4.4 alpha semaphores optimization

Ivan Kokshaysky (ink@jurassic.park.msu.ru)
Sun, 6 May 2001 10:55:19 +0400

> > If you do
> > (perhaps to coordinate with devices) then the barriers are required.
>
> For IO space access mb's are required, but ll/sc are of no use, AFAIK.

Ugh. You are right, of course. I forgot that drivers are also using
atomic.h, and the intelligent device could be counted as another CPU
to some degree...

Thanks for the __builtin_expect fix!

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