Hi All, Could anybody explain the following kernel code for me in detail ? I am royally confused on it. kernel/time/timekeeping.c timekeeping_bigadjust() { /* * Use the current error value to determine how much to look ahead. * The larger the error the slower we adjust for it to avoid problems * with losing too many ticks, otherwise we would overadjust and * produce an even larger error. The smaller the adjustment the * faster we try to adjust for it, as lost ticks can do less harm * here. This is tuned so that an error of about 1 msec is adjusted * within about 1 sec (or 2^20 nsec in 2^SHIFT_HZ ticks). */ error2 = tk->ntp_error >> (NTP_SCALE_SHIFT + 22 - 2 * SHIFT_HZ); } Thanks in advance. -- Best Regards, Dong Zhu MySite: http://bluezd.info