linux-toradex.git/kernel/time/ntp.c, branch v6.16-rc6

time: Switch to hrtimer_setup()

2025-02-18T09:32:33+00:00

hrtimer_setup() takes the callback function pointer as argument and
initializes the timer completely.

Replace hrtimer_init() and the open coded initialization of
hrtimer::function with the new setup mechanism.

Signed-off-by: Nam Cao 
Signed-off-by: Thomas Gleixner 
Link: https://lore.kernel.org/all/170bb691a0d59917c8268a98c80b607128fc9f7f.1738746821.git.namcao@linutronix.de

ntp: Remove invalid cast in time offset math

2024-11-28T11:02:38+00:00

Due to an unsigned cast, adjtimex() returns the wrong offest when using
ADJ_MICRO and the offset is negative. In this case a small negative offset
returns approximately 4.29 seconds (~ 2^32/1000 milliseconds) due to the
unsigned cast of the negative offset.

This cast was added when the kernel internal struct timex was changed to
use type long long for the time offset value to address the problem of a
64bit/32bit division on 32bit systems.

The correct cast would have been (s32), which is correct as time_offset can
only be in the range of [INT_MIN..INT_MAX] because the shift constant used
for calculating it is 32. But that's non-obvious.

Remove the cast and use div_s64() to cure the issue.

[ tglx: Fix white space damage, use div_s64() and amend the change log ]

Fixes: ead25417f82e ("timex: use __kernel_timex internally")
Signed-off-by: Marcelo Dalmas 
Signed-off-by: Thomas Gleixner 
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/all/SJ0P101MB03687BF7D5A10FD3C49C51E5F42E2@SJ0P101MB0368.NAMP101.PROD.OUTLOOK.COM

ntp: Move pps monitors into ntp_data

2024-10-02T14:53:41+00:00

Finalize the conversion from static variables to struct based data.

No functional change.

Signed-off-by: Thomas Gleixner 
Signed-off-by: Anna-Maria Behnsen 
Signed-off-by: Thomas Gleixner 
Acked-by: John Stultz 
Link: https://lore.kernel.org/all/20240911-devel-anna-maria-b4-timers-ptp-ntp-v1-21-2d52f4e13476@linutronix.de

ntp: Move pps_freq/stabil into ntp_data

2024-10-02T14:53:41+00:00

Continue the conversion from static variables to struct based data.

No functional change.

Signed-off-by: Thomas Gleixner 
Signed-off-by: Anna-Maria Behnsen 
Signed-off-by: Thomas Gleixner 
Acked-by: John Stultz 
Link: https://lore.kernel.org/all/20240911-devel-anna-maria-b4-timers-ptp-ntp-v1-20-2d52f4e13476@linutronix.de

ntp: Move pps_shift/intcnt into ntp_data

2024-10-02T14:53:40+00:00

Continue the conversion from static variables to struct based data.

No functional change.

Signed-off-by: Thomas Gleixner 
Signed-off-by: Anna-Maria Behnsen 
Signed-off-by: Thomas Gleixner 
Acked-by: John Stultz 
Link: https://lore.kernel.org/all/20240911-devel-anna-maria-b4-timers-ptp-ntp-v1-19-2d52f4e13476@linutronix.de

ntp: Move pps_fbase into ntp_data

2024-10-02T14:53:40+00:00

Continue the conversion from static variables to struct based data.

No functional change.

Signed-off-by: Thomas Gleixner 
Signed-off-by: Anna-Maria Behnsen 
Signed-off-by: Thomas Gleixner 
Acked-by: John Stultz 
Link: https://lore.kernel.org/all/20240911-devel-anna-maria-b4-timers-ptp-ntp-v1-18-2d52f4e13476@linutronix.de

ntp: Move pps_jitter into ntp_data

2024-10-02T14:53:40+00:00

Continue the conversion from static variables to struct based data.

No functional change.

Signed-off-by: Thomas Gleixner 
Signed-off-by: Anna-Maria Behnsen 
Signed-off-by: Thomas Gleixner 
Acked-by: John Stultz 
Link: https://lore.kernel.org/all/20240911-devel-anna-maria-b4-timers-ptp-ntp-v1-17-2d52f4e13476@linutronix.de

ntp: Move pps_ft into ntp_data

2024-10-02T14:53:40+00:00

Continue the conversion from static variables to struct based data.

No functional change.

Signed-off-by: Thomas Gleixner 
Signed-off-by: Anna-Maria Behnsen 
Signed-off-by: Thomas Gleixner 
Acked-by: John Stultz 
Link: https://lore.kernel.org/all/20240911-devel-anna-maria-b4-timers-ptp-ntp-v1-16-2d52f4e13476@linutronix.de

ntp: Move pps_valid into ntp_data

2024-10-02T14:53:40+00:00

Continue the conversion from static variables to struct based data.

No functional change.

Signed-off-by: Thomas Gleixner 
Signed-off-by: Anna-Maria Behnsen 
Signed-off-by: Thomas Gleixner 
Acked-by: John Stultz 
Link: https://lore.kernel.org/all/20240911-devel-anna-maria-b4-timers-ptp-ntp-v1-15-2d52f4e13476@linutronix.de

ntp: Move ntp_next_leap_sec into ntp_data

2024-10-02T14:53:40+00:00

Continue the conversion from static variables to struct based data.

No functional change.

Signed-off-by: Thomas Gleixner 
Signed-off-by: Anna-Maria Behnsen 
Signed-off-by: Thomas Gleixner 
Acked-by: John Stultz 
Link: https://lore.kernel.org/all/20240911-devel-anna-maria-b4-timers-ptp-ntp-v1-14-2d52f4e13476@linutronix.de