update_dl_entity

函数名称：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.

函数原型：static void update_dl_entity(struct sched_dl_entity *dl_se, struct sched_dl_entity *pi_se)

返回类型：void

参数：

类型	参数	名称
struct sched_dl_entity *	dl_se
struct sched_dl_entity *	pi_se

887

dl_rq等于dl_rq_of_se(dl_se)

888

rq等于rq_of_dl_rq(dl_rq)

890

如果dl_time_before( Absolute deadline for this instance , rq_clock(rq))或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)则

893

如果此条件成立可能性小(为编译器优化)(!Regarding the deadline, a task with implicit deadline has a relative* deadline == relative period. A task with constrained deadline has a* relative deadline <= relative period.* We support constrained deadline tasks. However, there are some restrictions && !dl_time_before( Absolute deadline for this instance , rq_clock(rq)) && !dl_boosted)则

896

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

897

900

Absolute deadline for this instance 等于rq_clock(rq)加 Relative deadline of each instance

901

Remaining runtime for this instance 等于 Maximum runtime for each instance

**调用者**
名称	描述
enqueue_dl_entity

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

函数逻辑报告