Commit a5a0d52c authored by Andrew Morton's avatar Andrew Morton Committed by Linus Torvalds

[PATCH] ntp whitespace cleanup

Fix bizarre 4-space coding style in the NTP code.
Signed-off-by: default avatarAndrew Morton <akpm@osdl.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@osdl.org>
parent 1bb34a41
...@@ -636,72 +636,69 @@ static void second_overflow(void) ...@@ -636,72 +636,69 @@ static void second_overflow(void)
/* Bump the maxerror field */ /* Bump the maxerror field */
time_maxerror += time_tolerance >> SHIFT_USEC; time_maxerror += time_tolerance >> SHIFT_USEC;
if ( time_maxerror > NTP_PHASE_LIMIT ) { if (time_maxerror > NTP_PHASE_LIMIT) {
time_maxerror = NTP_PHASE_LIMIT; time_maxerror = NTP_PHASE_LIMIT;
time_status |= STA_UNSYNC; time_status |= STA_UNSYNC;
} }
/* /*
* Leap second processing. If in leap-insert state at * Leap second processing. If in leap-insert state at the end of the
* the end of the day, the system clock is set back one * day, the system clock is set back one second; if in leap-delete
* second; if in leap-delete state, the system clock is * state, the system clock is set ahead one second. The microtime()
* set ahead one second. The microtime() routine or * routine or external clock driver will insure that reported time is
* external clock driver will insure that reported time * always monotonic. The ugly divides should be replaced.
* is always monotonic. The ugly divides should be
* replaced.
*/ */
switch (time_state) { switch (time_state) {
case TIME_OK: case TIME_OK:
if (time_status & STA_INS) if (time_status & STA_INS)
time_state = TIME_INS; time_state = TIME_INS;
else if (time_status & STA_DEL) else if (time_status & STA_DEL)
time_state = TIME_DEL; time_state = TIME_DEL;
break; break;
case TIME_INS: case TIME_INS:
if (xtime.tv_sec % 86400 == 0) { if (xtime.tv_sec % 86400 == 0) {
xtime.tv_sec--; xtime.tv_sec--;
wall_to_monotonic.tv_sec++; wall_to_monotonic.tv_sec++;
/* The timer interpolator will make time change gradually instead /*
* of an immediate jump by one second. * The timer interpolator will make time change
* gradually instead of an immediate jump by one second
*/ */
time_interpolator_update(-NSEC_PER_SEC); time_interpolator_update(-NSEC_PER_SEC);
time_state = TIME_OOP; time_state = TIME_OOP;
clock_was_set(); clock_was_set();
printk(KERN_NOTICE "Clock: inserting leap second 23:59:60 UTC\n"); printk(KERN_NOTICE "Clock: inserting leap second "
"23:59:60 UTC\n");
} }
break; break;
case TIME_DEL: case TIME_DEL:
if ((xtime.tv_sec + 1) % 86400 == 0) { if ((xtime.tv_sec + 1) % 86400 == 0) {
xtime.tv_sec++; xtime.tv_sec++;
wall_to_monotonic.tv_sec--; wall_to_monotonic.tv_sec--;
/* Use of time interpolator for a gradual change of time */ /*
* Use of time interpolator for a gradual change of
* time
*/
time_interpolator_update(NSEC_PER_SEC); time_interpolator_update(NSEC_PER_SEC);
time_state = TIME_WAIT; time_state = TIME_WAIT;
clock_was_set(); clock_was_set();
printk(KERN_NOTICE "Clock: deleting leap second 23:59:59 UTC\n"); printk(KERN_NOTICE "Clock: deleting leap second "
"23:59:59 UTC\n");
} }
break; break;
case TIME_OOP: case TIME_OOP:
time_state = TIME_WAIT; time_state = TIME_WAIT;
break; break;
case TIME_WAIT: case TIME_WAIT:
if (!(time_status & (STA_INS | STA_DEL))) if (!(time_status & (STA_INS | STA_DEL)))
time_state = TIME_OK; time_state = TIME_OK;
} }
/* /*
* Compute the phase adjustment for the next second. In * Compute the phase adjustment for the next second. In PLL mode, the
* PLL mode, the offset is reduced by a fixed factor * offset is reduced by a fixed factor times the time constant. In FLL
* times the time constant. In FLL mode the offset is * mode the offset is used directly. In either mode, the maximum phase
* used directly. In either mode, the maximum phase * adjustment for each second is clamped so as to spread the adjustment
* adjustment for each second is clamped so as to spread * over not more than the number of seconds between updates.
* the adjustment over not more than the number of
* seconds between updates.
*/ */
ltemp = time_offset; ltemp = time_offset;
if (!(time_status & STA_FLL)) if (!(time_status & STA_FLL))
...@@ -712,11 +709,10 @@ static void second_overflow(void) ...@@ -712,11 +709,10 @@ static void second_overflow(void)
time_adj = ltemp << (SHIFT_SCALE - SHIFT_HZ - SHIFT_UPDATE); time_adj = ltemp << (SHIFT_SCALE - SHIFT_HZ - SHIFT_UPDATE);
/* /*
* Compute the frequency estimate and additional phase * Compute the frequency estimate and additional phase adjustment due
* adjustment due to frequency error for the next * to frequency error for the next second. When the PPS signal is
* second. When the PPS signal is engaged, gnaw on the * engaged, gnaw on the watchdog counter and update the frequency
* watchdog counter and update the frequency computed by * computed by the pll and the PPS signal.
* the pll and the PPS signal.
*/ */
pps_valid++; pps_valid++;
if (pps_valid == PPS_VALID) { /* PPS signal lost */ if (pps_valid == PPS_VALID) { /* PPS signal lost */
...@@ -729,20 +725,23 @@ static void second_overflow(void) ...@@ -729,20 +725,23 @@ static void second_overflow(void)
time_adj += shift_right(ltemp,(SHIFT_USEC + SHIFT_HZ - SHIFT_SCALE)); time_adj += shift_right(ltemp,(SHIFT_USEC + SHIFT_HZ - SHIFT_SCALE));
#if HZ == 100 #if HZ == 100
/* Compensate for (HZ==100) != (1 << SHIFT_HZ). /*
* Add 25% and 3.125% to get 128.125; => only 0.125% error (p. 14) * Compensate for (HZ==100) != (1 << SHIFT_HZ). Add 25% and 3.125% to
* get 128.125; => only 0.125% error (p. 14)
*/ */
time_adj += shift_right(time_adj, 2) + shift_right(time_adj, 5); time_adj += shift_right(time_adj, 2) + shift_right(time_adj, 5);
#endif #endif
#if HZ == 250 #if HZ == 250
/* Compensate for (HZ==250) != (1 << SHIFT_HZ). /*
* Add 1.5625% and 0.78125% to get 255.85938; => only 0.05% error (p. 14) * Compensate for (HZ==250) != (1 << SHIFT_HZ). Add 1.5625% and
* 0.78125% to get 255.85938; => only 0.05% error (p. 14)
*/ */
time_adj += shift_right(time_adj, 6) + shift_right(time_adj, 7); time_adj += shift_right(time_adj, 6) + shift_right(time_adj, 7);
#endif #endif
#if HZ == 1000 #if HZ == 1000
/* Compensate for (HZ==1000) != (1 << SHIFT_HZ). /*
* Add 1.5625% and 0.78125% to get 1023.4375; => only 0.05% error (p. 14) * Compensate for (HZ==1000) != (1 << SHIFT_HZ). Add 1.5625% and
* 0.78125% to get 1023.4375; => only 0.05% error (p. 14)
*/ */
time_adj += shift_right(time_adj, 6) + shift_right(time_adj, 7); time_adj += shift_right(time_adj, 6) + shift_right(time_adj, 7);
#endif #endif
...@@ -753,12 +752,11 @@ static void update_wall_time_one_tick(void) ...@@ -753,12 +752,11 @@ static void update_wall_time_one_tick(void)
{ {
long time_adjust_step, delta_nsec; long time_adjust_step, delta_nsec;
if ( (time_adjust_step = time_adjust) != 0 ) { if ((time_adjust_step = time_adjust) != 0 ) {
/* We are doing an adjtime thing. /*
* * We are doing an adjtime thing. Prepare time_adjust_step to
* Prepare time_adjust_step to be within bounds. * be within bounds. Note that a positive time_adjust means we
* Note that a positive time_adjust means we want the clock * want the clock to run faster.
* to run faster.
* *
* Limit the amount of the step to be in the range * Limit the amount of the step to be in the range
* -tickadj .. +tickadj * -tickadj .. +tickadj
...@@ -1481,16 +1479,18 @@ static void time_interpolator_update(long delta_nsec) ...@@ -1481,16 +1479,18 @@ static void time_interpolator_update(long delta_nsec)
if (!time_interpolator) if (!time_interpolator)
return; return;
/* The interpolator compensates for late ticks by accumulating /*
* the late time in time_interpolator->offset. A tick earlier than * The interpolator compensates for late ticks by accumulating the late
* expected will lead to a reset of the offset and a corresponding * time in time_interpolator->offset. A tick earlier than expected will
* jump of the clock forward. Again this only works if the * lead to a reset of the offset and a corresponding jump of the clock
* interpolator clock is running slightly slower than the regular clock * forward. Again this only works if the interpolator clock is running
* and the tuning logic insures that. * slightly slower than the regular clock and the tuning logic insures
* that.
*/ */
counter = time_interpolator_get_counter(1); counter = time_interpolator_get_counter(1);
offset = time_interpolator->offset + GET_TI_NSECS(counter, time_interpolator); offset = time_interpolator->offset +
GET_TI_NSECS(counter, time_interpolator);
if (delta_nsec < 0 || (unsigned long) delta_nsec < offset) if (delta_nsec < 0 || (unsigned long) delta_nsec < offset)
time_interpolator->offset = offset - delta_nsec; time_interpolator->offset = offset - delta_nsec;
......
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