taglinefilesource code
time_reftime134include/linux/timex.hextern long time_reftime;  /* time at last adjustment (s) */
time_reftime63kernel/sched.clong time_reftime = 0;          /* time at last adjustment (s) */
time_reftime418kernel/time.cmtemp = xtime.tv_sec - time_reftime;
time_reftime419kernel/time.ctime_reftime = xtime.tv_sec;