tree dfe350df25fba5fec6f7e1088b04d6b03f0974b3
parent 9ca7d8e6834c40a99622bbe4a88aaf64313ae43c
author John Stultz <johnstul@us.ibm.com> 1270589451 -0700
committer Thomas Gleixner <tglx@linutronix.de> 1271155422 +0200

time: Remove xtime_cache

With the earlier logarithmic time accumulation patch, xtime will now
always be within one "tick" of the current time, instead of possibly
half a second off.

This removes the need for the xtime_cache value, which always stored the
time at the last interrupt, so this patch cleans that up removing the
xtime_cache related code.

This patch also addresses an issue with an earlier version of this change,
where xtime_cache was normalizing xtime, which could in some cases be
not valid (ie: tv_nsec == NSEC_PER_SEC). This is fixed by handling
the edge case in update_wall_time().

Signed-off-by: John Stultz <johnstul@us.ibm.com>
Cc: Petr Titěra <P.Titera@century.cz>
LKML-Reference: <1270589451-30773-1-git-send-email-johnstul@us.ibm.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>