inv_cycles_per_usec = 16777216UL / cycles_per_usec;
max_cycles_for_mult = ~0ULL / inv_cycles_per_usec;
dprint(FD_TIME, "inv_cycles_per_usec=%lu\n", inv_cycles_per_usec);
inv_cycles_per_usec = 16777216UL / cycles_per_usec;
max_cycles_for_mult = ~0ULL / inv_cycles_per_usec;
dprint(FD_TIME, "inv_cycles_per_usec=%lu\n", inv_cycles_per_usec);