Oops!  Wrong patch.  Attached is the correct one.

This, patch implements the POSIX clocks and timers
functions.  The two standard clocks are
defined(CLOCK_REALTIME & CLOCK_MONOTONIC). 

With this version, nano_sleep() is rolled into
clock_nanosleep().  Also a bug fix in clock_nanosleep().

kernel/timer.c is modified to remove the timer_t typedef
which conflicts with the POSIX standard definition for this
type.  

The patch introduces a new kernel source (posix-timers.c)
which contains most of the code.

This implementation defines a timer as a system wide
resource with system wide limits on the number of allocated
timers.  This number can be set at configure time and is
defaulted to 3000.  There
are NO other limits on how many timers a process can have.

Kernel version 2.5.42-bk2

Test programs, man pages and readme files are available
on the sourceforge high-res-timers site: 

http://sourceforge.net/projects/high-res-timers/
-- 
George Anzinger   george@mvista.com
High-res-timers: 
http://sourceforge.net/projects/high-res-timers/
Preemption patch:
http://www.kernel.org/pub/linux/kernel/people/rml