taglinefilesource code
time_tolerance223include/linux/timex.hextern long time_tolerance;  /* frequency tolerance (ppm) */
time_tolerance55kernel/sched.clong time_tolerance = MAXFREQ;  /* frequency tolerance (ppm) */
time_tolerance581kernel/sched.ctime_tolerance >> SHIFT_USEC) ?
time_tolerance582kernel/sched.c0x70000000 : (time_maxerror + (time_tolerance >> SHIFT_USEC));
time_tolerance300kernel/time.cif (time_freq > time_tolerance)
time_tolerance301kernel/time.ctime_freq = time_tolerance;
time_tolerance302kernel/time.celse if (time_freq < -time_tolerance)
time_tolerance303kernel/time.ctime_freq = -time_tolerance;
time_tolerance316kernel/time.ctxc.tolerance     = time_tolerance;