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tile: Convert VDSO timekeeping to the precise mechanism

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The code was only halfarsed converted to the new VSDO update mechanism
and still uses the inaccurate base value which lacks the fractional
part of xtime_nsec. Fix it up.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: John Stultz <john.stultz@linaro.org>
This commit is contained in:
Thomas Gleixner
2014-07-16 21:03:49 +00:00
committed by John Stultz
parent 988b0c541e
commit dc01c9fae1
2 changed files with 8 additions and 8 deletions
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7
arch/tile/kernel/vdso/vgettimeofday.c
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@@ -83,10 +83,11 @@ int __vdso_gettimeofday(struct timeval *tv, struct timezone *tz)
if (count & 1)
continue;
cycles = (get_cycles() - vdso_data->xtime_tod_stamp);
ns = (cycles * vdso_data->mult) >> vdso_data->shift;
sec = vdso_data->xtime_clock_sec;
ns += vdso_data->xtime_clock_nsec;
cycles = get_cycles() - vdso_data->xtime_tod_stamp;
ns = (cycles * vdso_data->mult) + vdso_data->xtime_clock_nsec;
ns >>= vdso_data->shift;
if (ns >= NSEC_PER_SEC) {
ns -= NSEC_PER_SEC;
sec += 1;