update_dl_entity

Name: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.

Proto:static void update_dl_entity(struct sched_dl_entity *dl_se, struct sched_dl_entity *pi_se)

Type:void

Parameter:

Type	Parameter	Name
struct sched_dl_entity *	dl_se
struct sched_dl_entity *	pi_se

887

dl_rq = dl_rq_of_se(dl_se)

888

rq = rq_of_dl_rq(dl_rq)

890

If dl_time_before( Absolute deadline for this instance , rq_clock(rq)) || 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) Then

893

If Value for the false possibility is greater at compile time(!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) Then

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

Return

900

Absolute deadline for this instance = rq_clock(rq) + Relative deadline of each instance

901

Remaining runtime for this instance = Maximum runtime for each instance

**Caller**
Name	Describe
enqueue_dl_entity

Source code conversion tool public plug-in interface	X
Support c/c++/esqlc/java Oracle/Informix/Mysql Plug-in can realize: logical Report Code generation and batch code conversion

Function report