- u64 ret = (u64)cycles;
- ret = (ret * cs->mult) >> cs->shift;
- return ret;
-}
-
-/**
- * clocksource_calculate_interval - Calculates a clocksource interval struct
- *
- * @c: Pointer to clocksource.
- * @length_nsec: Desired interval length in nanoseconds.
- *
- * Calculates a fixed cycle/nsec interval for a given clocksource/adjustment
- * pair and interval request.
- *
- * Unless you're the timekeeping code, you should not be using this!
- */
-static inline void clocksource_calculate_interval(struct clocksource *c,
- unsigned long length_nsec)
-{
- u64 tmp;
-
- /* Do the ns -> cycle conversion first, using original mult */
- tmp = length_nsec;
- tmp <<= c->shift;
- tmp += c->mult_orig/2;
- do_div(tmp, c->mult_orig);
-
- c->cycle_interval = (cycle_t)tmp;
- if (c->cycle_interval == 0)
- c->cycle_interval = 1;
-
- /* Go back from cycles -> shifted ns, this time use ntp adjused mult */
- c->xtime_interval = (u64)c->cycle_interval * c->mult;
- c->raw_interval = ((u64)c->cycle_interval * c->mult_orig) >> c->shift;