Messages in this thread | | | Date | Mon, 27 Feb 2006 03:34:28 -0500 | From | Shailabh Nagar <> | Subject | Re: [Patch 1/7] timespec diff utility |
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Arjan van de Ven wrote:
>>+/* >>+ * timespec_diff_ns - Return difference of two timestamps in nanoseconds >>+ * In the rare case of @end being earlier than @start, return zero >>+ */ >>+static inline nsec_t timespec_diff_ns(struct timespec *start, struct timespec *end) >>+{ >>+ nsec_t ret; >>+ >>+ ret = (nsec_t)(end->tv_sec - start->tv_sec)*NSEC_PER_SEC; >>+ ret += (nsec_t)(end->tv_nsec - start->tv_nsec); >>+ if (ret < 0) >>+ return 0; >>+ return ret; >>+} >> #endif /* __KERNEL__ */ >> >> >> > >wouldn't it be more useful to have this return a timespec as well, and >then it'd be generically useful (and it also probably should then be >uninlined ;) > > Return another timespec to store the difference of two input timespecs ? Would that be useful ? Didn't quite get it.
--Shailabh
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