diff options
| author | Thomas Gleixner <tglx@linutronix.de> | 2014-07-16 21:04:58 +0000 |
|---|---|---|
| committer | John Stultz <john.stultz@linaro.org> | 2014-07-23 15:01:47 -0700 |
| commit | 02cba1598a2a3b689e79ad6dad2532521f638271 (patch) | |
| tree | c63b4bded9f6c6194d1c13947c8c30611e9f2b30 /kernel/time | |
| parent | 48f18fd6addc199f330d838d54fe7b0a0892adaa (diff) | |
| download | linux-02cba1598a2a3b689e79ad6dad2532521f638271.tar.bz2 | |
timekeeping: Simplify getboottime()
Subtracting plain nsec values and converting to timespec is simpler
than the whole timespec math. Not really fastpath code, so the
division is not an issue.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: John Stultz <john.stultz@linaro.org>
Diffstat (limited to 'kernel/time')
| -rw-r--r-- | kernel/time/timekeeping.c | 11 |
1 files changed, 3 insertions, 8 deletions
diff --git a/kernel/time/timekeeping.c b/kernel/time/timekeeping.c index f63476fb0daf..3edc0c1d6fe8 100644 --- a/kernel/time/timekeeping.c +++ b/kernel/time/timekeeping.c @@ -1525,14 +1525,9 @@ out: void getboottime(struct timespec *ts) { struct timekeeper *tk = &tk_core.timekeeper; - struct timespec boottime = { - .tv_sec = tk->wall_to_monotonic.tv_sec + - tk->total_sleep_time.tv_sec, - .tv_nsec = tk->wall_to_monotonic.tv_nsec + - tk->total_sleep_time.tv_nsec - }; - - set_normalized_timespec(ts, -boottime.tv_sec, -boottime.tv_nsec); + ktime_t t = ktime_sub(tk->offs_real, tk->offs_boot); + + *ts = ktime_to_timespec(t); } EXPORT_SYMBOL_GPL(getboottime); |