ntp_update_offset

Name:ntp_update_offset

Proto:static void ntp_update_offset(long offset)

Type:void

Parameter:

Type	Parameter	Name
long	offset

302

If Not (clock status bits: & able PLL updates (rw) ) Then Return

305

If Not (clock status bits: & solution (0 = us, 1 = ns) (ro) ) Then

307

offset = clamp - return a value clamped to a given range with strict typechecking*@val: current value*@lo: lowest allowable value*@hi: highest allowable value* This macro does strict typechecking of @lo/@hi to make sure they are of the* same type as @val(offset, - USEC_PER_SEC, USEC_PER_SEC)

308

offset *= NSEC_PER_USEC

315

offset = clamp - return a value clamped to a given range with strict typechecking*@val: current value*@lo: lowest allowable value*@hi: highest allowable value* This macro does strict typechecking of @lo/@hi to make sure they are of the* same type as @val(offset, - max phase error (ns) , max phase error (ns) )

321

secs = __ktime_get_real_seconds - The same as ktime_get_real_seconds* but without the sequence counter protect. This internal function* is called just when timekeeping lock is already held. - ime at last adjustment (secs):

322

If Value for the false possibility is greater at compile time(clock status bits: & hold frequency (rw) ) Then secs = 0

325

ime at last adjustment (secs): = __ktime_get_real_seconds - The same as ktime_get_real_seconds* but without the sequence counter protect. This internal function* is called just when timekeeping lock is already held.

327

offset64 = offset

328

freq_adj = ntp_update_offset_fll(offset64, secs)

335

If Value for the false possibility is greater at compile time(secs > 1 << (PLL frequency factor (shift) + 1 + pll time constant: )) Then secs = 1 << PLL frequency factor (shift) + 1 + pll time constant:

338

freq_adj += offset64 * secs << NTP_SCALE_SHIFT - 2 * ( PLL frequency factor (shift) + 2 + pll time constant: )

341

freq_adj = min - return minimum of two values of the same or compatible types*@x: first value*@y: second value(freq_adj + quency offset (scaled nsecs/secs): , MAXFREQ_SCALED)

343

quency offset (scaled nsecs/secs): = max - return maximum of two values of the same or compatible types*@x: first value*@y: second value(freq_adj, - MAXFREQ_SCALED)

345

ime adjustment (nsecs): = div_s64 - signed 64bit divide with 32bit divisor*@dividend: signed 64bit dividend*@divisor: signed 32bit divisor

**Caller**
Name	Describe
process_adjtimex_modes

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