dl_time_before

函数名称：dl_time_before

函数原型：static inline bool dl_time_before(u64 a, u64 b)

返回类型：bool

参数：

类型	参数	名称
u64	a
u64	b

25

返回:a减b小于0

**调用者**
名称	描述
setup_new_dl_entity	We are being explicitly informed that a new instance is starting,* and this means that:* - the absolute deadline of the entity has to be placed at* current time + relative deadline;* - the runtime of the entity has to be set to the maximum value
replenish_dl_entity	Pure Earliest Deadline First (EDF) scheduling does not deal with the* possibility of a entity lasting more than what it declared, and thus* exhausting its runtime
dl_entity_overflow	Here we check if --at time t-- an entity (which is probably being* [re]activated or, in general, enqueued) can use its remaining runtime* and its current deadline _without_ exceeding the bandwidth it is* assigned (function returns true if it can't)
update_dl_revised_wakeup	Revised wakeup rule [1]: For self-suspending tasks, rather then* re-initializing task's runtime and deadline, the revised wakeup* rule adjusts the task's runtime to avoid the task to overrun its* density
update_dl_entity	When a deadline entity is placed in the runqueue, its runtime and deadline* might need to be updated. This is done by a CBS wake up rule. There are two* different rules: 1) the original CBS; and 2) the Revisited CBS.
dl_check_constrained_dl	During the activation, CBS checks if it can reuse the current task's* runtime and period
__enqueue_dl_entity
enqueue_dl_entity
cpudl_heapify_down
cpudl_heapify_up
cpudl_heapify
cpudl_find	pudl_find - find the best (later-dl) CPU in the system@cp: the cpudl max-heap context@p: the task@later_mask: a mask to fill in with the selected CPUs (or NULL) Returns: int - CPUs were found
rt_mutex_waiter_less
dl_entity_preempt	Tells if entity @a should preempt entity @b.

源代码转换工具开放的插件接口	X
支持：c/c++/esqlc/java Oracle/Informix/Mysql 插件可实现：逻辑报告代码生成和批量转换代码