From a016a5bd62e29a738531d9d4d925037a1fdb52f5 Mon Sep 17 00:00:00 2001 From: Thomas Gleixner Date: Wed, 16 Jul 2014 21:04:12 +0000 Subject: [PATCH] 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 Signed-off-by: John Stultz --- kernel/time/timekeeping.c | 9 +++++---- 1 file changed, 5 insertions(+), 4 deletions(-) diff --git a/kernel/time/timekeeping.c b/kernel/time/timekeeping.c index 86a92476c027..d5be1425cc03 100644 --- a/kernel/time/timekeeping.c +++ b/kernel/time/timekeeping.c @@ -407,18 +407,19 @@ ktime_t ktime_get(void) { 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); -- 2.20.1