cpu_clock confusion

[David Miller]

From: Johannes Berg <johannes at sipsolutions.net>
Date: Thu, 24 Apr 2008 11:21:52 +0200

> Hmm. Why is that whole cpu_clock stuff in place anyway? powerpc has
> perfectly synchronised time across processors with dirt cheap access to
> it as well, so why build all this code that only messes it up on top of
> it?

Same on sparc64.  These changes add more bugs than they fix.