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authorJohn Stultz <johnstul@us.ibm.com>2010-04-06 14:30:51 -0700
committerThomas Gleixner <tglx@linutronix.de>2010-04-13 12:43:42 +0200
commit6a867a395558a7f882d041783e4cdea6744ca2bf (patch)
treedfe350df25fba5fec6f7e1088b04d6b03f0974b3 /include/linux/time.h
parent9ca7d8e6834c40a99622bbe4a88aaf64313ae43c (diff)
downloadblackbird-op-linux-6a867a395558a7f882d041783e4cdea6744ca2bf.tar.gz
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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>
Diffstat (limited to 'include/linux/time.h')
-rw-r--r--include/linux/time.h1
1 files changed, 0 insertions, 1 deletions
diff --git a/include/linux/time.h b/include/linux/time.h
index 6e026e45a179..ea3559f0b3f2 100644
--- a/include/linux/time.h
+++ b/include/linux/time.h
@@ -150,7 +150,6 @@ extern struct timespec timespec_trunc(struct timespec t, unsigned gran);
extern int timekeeping_valid_for_hres(void);
extern u64 timekeeping_max_deferment(void);
extern void update_wall_time(void);
-extern void update_xtime_cache(u64 nsec);
extern void timekeeping_leap_insert(int leapsecond);
struct tms;
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