: Introduce ktime_us_delta

PATCH In review Arnaldo Carvalho de Melo 1 participant 1 message Jun 18, 2007

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Arnaldo Carvalho de Melo

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2007-06-18 02:06 UTC #0 lore raw

PATCH 1/4 : Introduce ktime_us_delta

This provides a reusable time difference function which returns the difference in microseconds, as often used in the DCCP code.

Commiter note: renamed ktime_delta to ktime_us_delta and put it in ktime.h.

Signed-off-by Gerrit Renker <[email protected]>

Signed-off-by Arnaldo Carvalho de Melo <[email protected]>

---
 include/linux/ktime.h |    5 +++++
 1 files changed, 5 insertions(+), 0 deletions(-)

include/linux/ktime.h +5 -0

index c762954..a208f9f 100644
@@ -267,6 +267,11 @@ static inline s64 ktime_to_us(const ktime_t kt)
 	return (s64) tv.tv_sec * USEC_PER_SEC + tv.tv_usec;
 }
 
+static inline s64 ktime_us_delta(const ktime_t later, const ktime_t earlier)
+{
+       return ktime_to_us(ktime_sub(later, earlier));
+}
+
 /*
  * The resolution of the clocks. The resolution value is returned in
  * the clock_getres() system call to give application programmers an

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