Timekeeping changes for 3.6

Hey Thomas,

Just wanted to send a pull request for my current timekeeping queue
for 3.6.

Let me know if you have any concerns or objections.

thanks
-john

You can find it here against current tip/timers/core:
git://git.linaro.org/people/jstultz/linux.git fortglx/3.6/time

for you to fetch changes up to 406d3845a5b75129277576034a0b260c90495dc9:

time: Kill xtime_lock, replacing it with jiffies_lock (2012-06-20
20:26:58 -0400)

----------------------------------------------------------------
John Stultz (8):
time: Condense timekeeper.xtime into xtime_sec
time: Rework timekeeping functions to take timekeeper ptr as argument
time: Refactor accumulation of nsecs to secs
time: Whitespace cleanups per Ingo's requests
time: Explicitly use u32 instead of int for shift values
time: Move TAI managment into timekeeping core from ntp
time: Add CLOCK_TAI clockid
time: Kill xtime_lock, replacing it with jiffies_lock

 drivers/clocksource/i8253.c |    2 +-
 include/linux/jiffies.h     |    3 +-
 include/linux/time.h        |    9 +-
 kernel/posix-timers.c       |   10 +
 kernel/time/jiffies.c       |    6 +-
 kernel/time/ntp.c           |   18 +-
 kernel/time/tick-common.c   |    8 +-
 kernel/time/tick-internal.h |    1 -
 kernel/time/tick-sched.c    |   22 +--
 kernel/time/timekeeping.c   |  461 
++++++++++++++++++++++++++-----------------
 10 files changed, 332 insertions(+), 208 deletions(-)