[PATCH] ktime.h: Introduce ktime_ms_delta

From: Chunyan Zhang
Date: Wed Dec 17 2014 - 00:13:28 EST

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@xxxxxxxxxx>
include/linux/ktime.h | 5 +++++
1 file changed, 5 insertions(+)

diff --git a/include/linux/ktime.h b/include/linux/ktime.h
index c9d645a..891ea92 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);

To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/