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| author |   Chunyan Zhang <zhang.chunyan@linaro.org> | 2014-12-17 13:11:35 +0800 |
|---|---|---|
| committer |   Thomas Gleixner <tglx@linutronix.de> | 2015-01-23 11:47:15 +0100 |
| commit | 41fbf3b39d5eca01527338b4d0ee15ee1ae1023c (patch) | |
| tree | fadcc3cc42eda258a31ec7d880f259d79f21063a /include/linux/ktime.h | |
| parent | Linux 3.19-rc5 (diff) | |
| download | linux-dev-41fbf3b39d5eca01527338b4d0ee15ee1ae1023c.tar.xz linux-dev-41fbf3b39d5eca01527338b4d0ee15ee1ae1023c.zip | |
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 <zhang.chunyan@linaro.org>
Acked-by: Arnd Bergmann <arnd@linaro.org>
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 <tglx@linutronix.de>
Diffstat (limited to 'include/linux/ktime.h')
| -rw-r--r-- | include/linux/ktime.h | 5 |
1 files changed, 5 insertions, 0 deletions
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); |