read_seqcount

类型	参数	名称
const seqcount_t *	s
unsigned	start

**调用者**
名称	描述
fprop_fraction_single	Return fraction of events of type pl
fprop_fraction_percpu
get_recent_times
hrtimer_active	A timer is active, when it is enqueued into the rbtree or the* callback function is running or it's in the state of being migrated* to another cpu.* It is important for this function to not return a false negative.
__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
ktime_get_real_ts64	ktime_get_real_ts64 - Returns the time of day in a timespec64.@ts: pointer to the timespec to be set Returns the time of day in a timespec64 (WARN if suspended).
ktime_get
ktime_get_resolution_ns
ktime_get_with_offset
ktime_get_coarse_with_offset
ktime_mono_to_any	ktime_mono_to_any() - convert mononotic time to any other time@tmono: time to convert.@offs: which offset to use
ktime_get_raw	ktime_get_raw - Returns the raw monotonic time in ktime_t format
ktime_get_ts64	ktime_get_ts64 - get the monotonic clock in timespec64 format@ts: pointer to timespec variable The function calculates the monotonic clock from the realtime* clock and the wall_to_monotonic offset and stores the result
ktime_get_real_seconds	ktime_get_real_seconds - Get the seconds portion of CLOCK_REALTIME* Returns the wall clock seconds since 1970. This replaces the* get_seconds() interface which is not y2038 safe on 32bit systems.
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simultaneous device time and system counter from the device driver@ctx: Context passed to get_time_fn()@history_begin: Historical reference
ktime_get_raw_ts64	ktime_get_raw_ts64 - Returns the raw monotonic time in a timespec@ts: pointer to the timespec64 to be set Returns the raw monotonic time (completely un-modified by ntp)
timekeeping_valid_for_hres	mekeeping_valid_for_hres - Check if timekeeping is suitable for hres
timekeeping_max_deferment	mekeeping_max_deferment - Returns max time the clocksource can be deferred
ktime_get_coarse_real_ts64
ktime_get_coarse_ts64
ktime_get_update_offsets_now	ktime_get_update_offsets_now - hrtimer helper@cwsseq: pointer to check and store the clock was set sequence number@offs_real: pointer to storage for monotonic -> realtime offset@offs_boot: pointer to storage for monotonic -> boottime offset@offs_tai:
sched_clock
ioc_now	ake a snapshot of the current [v]time and vrate
legitimize_path	path_put is needed afterwards regardless of success or failure
unlazy_child	lazy_child - try to switch to ref-walk mode
set_root
nd_jump_root
follow_dotdot_rcu
lookup_fast
step_into	Do we need to follow links? We _really_ want to be able* to do this check without having to look at inode->i_op,* so we keep a cache of "no, this doesn't need follow_link"* for the common case.
path_init	must be paired with terminate_walk()
dget_parent
__d_lookup_rcu	__d_lookup_rcu - search for a dentry (racy, store-free)@parent: parent dentry@name: qstr of name we wish to find@seqp: returns d_seq value at the point where the dentry was found Returns: dentry, or NULL* __d_lookup_rcu is the dcache lookup function
d_alloc_parallel
get_fs_root_rcu
get_fs_root_and_pwd_rcu
wake_userfault
read_seqretry
latch_tree_find	latch_tree_find() - find the node matching @key in the trees @root@key: search key@root: trees to search for @key@ops: operators defining the node order Does a lockless lookup in the trees @root for the node matching @key

函数逻辑报告