This issue was discussed on lkml and linux-ia64.  The patch introduces
"getnstimeofday" and removes all the code scaling gettimeofday to
nanoseoncs.  It makes it possible for the posix-timer functions to return
higher accuracy.

Signed-off-by: Christoph Lameter <clameter@sgi.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>