From: Chunyan Zhang Date: Wed, 17 Dec 2014 05:11:35 +0000 (+0800) Subject: ktime.h: Introduce ktime_ms_delta X-Git-Tag: v4.0-rc1~161^2~3 X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=41fbf3b39d5eca01527338b4d0ee15ee1ae1023c;p=karo-tx-linux.git ktime.h: Introduce ktime_ms_delta This patch adds a reusable time difference function which returns the difference in millisecond, as often used in some driver code, e.g. mtd/test, media/rc, etc. Signed-off-by: Chunyan Zhang Acked-by: Arnd Bergmann Cc: zhang.lyra@gmail.com Cc: davem@davemloft.net Cc: john.stultz@linaro.org Cc: dborkman@redhat.com Link: http://lkml.kernel.org/r/1418793095-18780-1-git-send-email-zhang.chunyan@linaro.org Signed-off-by: Thomas Gleixner --- diff --git a/include/linux/ktime.h b/include/linux/ktime.h index c9d645ad98ff..891ea92a68b0 100644 --- a/include/linux/ktime.h +++ b/include/linux/ktime.h @@ -186,6 +186,11 @@ static inline s64 ktime_us_delta(const ktime_t later, const ktime_t earlier) return ktime_to_us(ktime_sub(later, earlier)); } +static inline s64 ktime_ms_delta(const ktime_t later, const ktime_t earlier) +{ + return ktime_to_ms(ktime_sub(later, earlier)); +} + static inline ktime_t ktime_add_us(const ktime_t kt, const u64 usec) { return ktime_add_ns(kt, usec * NSEC_PER_USEC);