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| author | Gerrit Renker | 2007-06-16 17:38:51 +0200 |
|---|---|---|
| committer | David S. Miller | 2007-07-11 07:15:25 +0200 |
| commit | f1c91da44728fba24927e44056a56e507c11cf7b (patch) | |
| tree | 0b5c2347c91d364a71b39c9ed24a36c172aeef6b /include/linux/ktime.h | |
| parent | loss_interval: make struct dccp_li_hist_entry private (diff) | |
| download | kernel-qcow2-linux-f1c91da44728fba24927e44056a56e507c11cf7b.tar.gz kernel-qcow2-linux-f1c91da44728fba24927e44056a56e507c11cf7b.tar.xz kernel-qcow2-linux-f1c91da44728fba24927e44056a56e507c11cf7b.zip | |
[KTIME]: 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 <gerrit@erg.abdn.ac.uk>
Signed-off-by: Arnaldo Carvalho de Melo <acme@ghostprotocols.net>
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 2b139f66027f..923665958f90 100644 --- a/include/linux/ktime.h +++ b/include/linux/ktime.h @@ -279,6 +279,11 @@ 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 |