timekeeping: Use ktime_t based data for ktime_get()
Speed up ktime_get() by using ktime_t based data. Text size shrinks by
64 bytes on x8664.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: John Stultz <john.stultz@linaro.org>
diff --git a/kernel/time/timekeeping.c b/kernel/time/timekeeping.c
index 86a9247..d5be142 100644
--- a/kernel/time/timekeeping.c
+++ b/kernel/time/timekeeping.c
@@ -407,18 +407,19 @@
{
struct timekeeper *tk = &tk_core.timekeeper;
unsigned int seq;
- s64 secs, nsecs;
+ ktime_t base;
+ s64 nsecs;
WARN_ON(timekeeping_suspended);
do {
seq = read_seqcount_begin(&tk_core.seq);
- secs = tk->xtime_sec + tk->wall_to_monotonic.tv_sec;
- nsecs = timekeeping_get_ns(tk) + tk->wall_to_monotonic.tv_nsec;
+ base = tk->base_mono;
+ nsecs = timekeeping_get_ns(tk);
} while (read_seqcount_retry(&tk_core.seq, seq));
- return ktime_set(secs, nsecs);
+ return ktime_add_ns(base, nsecs);
}
EXPORT_SYMBOL_GPL(ktime_get);