diff options
| author | Thomas Gleixner <tglx@kernel.org> | 2026-05-29 23:00:28 +0300 |
|---|---|---|
| committer | Thomas Gleixner <tglx@kernel.org> | 2026-06-04 12:04:16 +0300 |
| commit | 6c14771816435a7ecf52d981a341e2de21463268 (patch) | |
| tree | 1cd15d81bf001f9ef15256340b82aa7832e276b9 /include/linux | |
| parent | 23c1bfa9f8dbefe0be1fa32aaf235c08cb24bd78 (diff) | |
| download | linux-6c14771816435a7ecf52d981a341e2de21463268.tar.xz | |
timekeeping: Add system_counterval_t to struct system_device_crosststamp
An upcoming extension to the PTP IOCTL requires to return the system counter
value and the clocksource ID to user space. get_device_system_crosststamp() has
this information already.
Extend struct system_device_crosststamp with a system_counterval_t member
and fill in the data.
Signed-off-by: Thomas Gleixner <tglx@kernel.org>
Tested-by: David Woodhouse <dwmw@amazon.co.uk>
Tested-by: Arthur Kiyanovski <akiyano@amazon.com>
Reviewed-by: David Woodhouse <dwmw@amazon.co.uk>
Reviewed-by: Jacob Keller <jacob.e.keller@intel.com>
Link: https://patch.msgid.link/20260529195557.429406675@kernel.org
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/timekeeping.h | 28 |
1 files changed, 15 insertions, 13 deletions
diff --git a/include/linux/timekeeping.h b/include/linux/timekeeping.h index eb64c90c4127..3867db65f391 100644 --- a/include/linux/timekeeping.h +++ b/include/linux/timekeeping.h @@ -297,19 +297,6 @@ struct system_time_snapshot { }; /** - * struct system_device_crosststamp - system/device cross-timestamp - * (synchronized capture) - * @device: Device time - * @sys_realtime: Realtime simultaneous with device time - * @sys_monoraw: Monotonic raw simultaneous with device time - */ -struct system_device_crosststamp { - ktime_t device; - ktime_t sys_realtime; - ktime_t sys_monoraw; -}; - -/** * struct system_counterval_t - system counter value with the ID of the * corresponding clocksource * @cycles: System counter value @@ -325,6 +312,21 @@ struct system_counterval_t { bool use_nsecs; }; +/** + * struct system_device_crosststamp - system/device cross-timestamp + * (synchronized capture) + * @device: Device time + * @sys_counter: Clocksource counter value simultaneous with device time + * @sys_realtime: Realtime simultaneous with device time + * @sys_monoraw: Monotonic raw simultaneous with device time + */ +struct system_device_crosststamp { + ktime_t device; + struct system_counterval_t sys_counter; + ktime_t sys_realtime; + ktime_t sys_monoraw; +}; + extern bool ktime_real_to_base_clock(ktime_t treal, enum clocksource_ids base_id, u64 *cycles); extern bool timekeeping_clocksource_has_base(enum clocksource_ids id); |