From mboxrd@z Thu Jan 1 00:00:00 1970 From: Arnaldo Carvalho de Melo Date: Mon, 18 Jun 2007 02:06:17 +0000 Subject: [PATCH 1/4] [KTIME]: Introduce ktime_us_delta Message-Id: <20070618020617.GB4226@ghostprotocols.net> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: dccp@vger.kernel.org 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 Signed-off-by: Arnaldo Carvalho de Melo --- 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 c762954..a208f9f 100644 --- a/include/linux/ktime.h +++ b/include/linux/ktime.h @@ -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 -- 1.5.0.6