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| author | john stultz <johnstul@us.ibm.com> | 2009-10-02 16:24:15 -0700 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2009-10-05 13:52:02 +0200 |
| commit | 7bc7d637452383d56ba4368d4336b0dde1bb476d (patch) | |
| tree | f1c8e1e103a900850342d46de27ebdf1e7d07f78 /kernel/time.c | |
| parent | a092ff0f90cae22b2ac8028ecd2c6f6c1a9e4601 (diff) | |
| download | lwn-7bc7d637452383d56ba4368d4336b0dde1bb476d.tar.gz lwn-7bc7d637452383d56ba4368d4336b0dde1bb476d.zip | |
time: Remove xtime_cache
With the prior 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 is a bit simpler, but still could use some wider testing.
Signed-off-by: John Stultz <johnstul@us.ibm.com>
Acked-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: John Kacur <jkacur@redhat.com>
Cc: Clark Williams <williams@redhat.com>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
LKML-Reference: <1254525855.7741.95.camel@localhost.localdomain>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'kernel/time.c')
| -rw-r--r-- | kernel/time.c | 1 |
1 files changed, 0 insertions, 1 deletions
diff --git a/kernel/time.c b/kernel/time.c index 2e2e469a7fec..2ef4fe2079b6 100644 --- a/kernel/time.c +++ b/kernel/time.c @@ -136,7 +136,6 @@ static inline void warp_clock(void) write_seqlock_irq(&xtime_lock); wall_to_monotonic.tv_sec -= sys_tz.tz_minuteswest * 60; xtime.tv_sec += sys_tz.tz_minuteswest * 60; - update_xtime_cache(0); write_sequnlock_irq(&xtime_lock); clock_was_set(); } |