usecs64 457 drivers/base/power/main.c u64 usecs64; usecs64 461 drivers/base/power/main.c usecs64 = ktime_to_ns(ktime_sub(calltime, starttime)); usecs64 462 drivers/base/power/main.c do_div(usecs64, NSEC_PER_USEC); usecs64 463 drivers/base/power/main.c usecs = usecs64;