tk_clock

函数名称：k_clock_read - atomic clocksource read() helper* This helper is necessary to use in the read paths because, while the* seqlock ensures we don't return a bad value while structures are updated,* it doesn't protect from potential crashes

函数原型：static inline u64 tk_clock_read(const struct tk_read_base *tkr)

返回类型：u64

参数：

类型	参数	名称
const struct tk_read_base *	tkr

**调用者**
名称	描述
timekeeping_get_delta
tk_setup_internals	k_setup_internals - Set up internals to use clocksource clock
__ktime_get_fast_ns	ktime_get_mono_fast_ns - Fast NMI safe access to clock monotonic* This timestamp is not guaranteed to be monotonic across an update
__ktime_get_real_fast_ns	See comment for __ktime_get_fast_ns() vs. timestamp ordering
halt_fast_timekeeper	halt_fast_timekeeper - Prevent fast timekeeper from accessing clocksource.@tk: Timekeeper to snapshot. It generally is unsafe to access the clocksource after timekeeping has been* suspended, so take a snapshot of the readout base of @tk and use it as the
timekeeping_forward_now	mekeeping_forward_now - update clock to the current time* Forward the current clock to update its state since the last call to* update_wall_time(). This is useful before significant clock changes,
ktime_get_snapshot	ktime_get_snapshot - snapshots the realtime/monotonic raw clocks with counter*@systime_snapshot: pointer to struct receiving the system time snapshot
get_device_system_crosststamp	get_device_system_crosststamp - Synchronously capture system/device timestamp@get_time_fn: Callback to get simultaneous device time and system counter from the device driver@ctx: Context passed to get_time_fn()@history_begin: Historical reference
timekeeping_resume	mekeeping_resume - Resumes the generic timekeeping subsystem.
timekeeping_advance	mekeeping_advance - Updates the timekeeper to the current time and* current NTP tick length

函数逻辑报告