bfq_update_next_in_service

函数名称：q_update_next_in_service - update sd->next_in_service*@sd: sched_data for which to perform the update

函数原型：static bool bfq_update_next_in_service(struct bfq_sched_data *sd, struct bfq_entity *new_entity, bool expiration)

返回类型：bool

参数：

类型	参数	名称
struct bfq_sched_data *	sd
struct bfq_entity *	new_entity
bool	expiration

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next_in_service等于head-of-line entity (see comments above)

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bool parent_sched_may_change = false

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bool change_without_lookup = false

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如果new_entity且new_entity不等于head-of-line entity (see comments above) 则

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change_without_lookup = true

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如果next_in_service则

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new_entity_class_idx等于bfq_class_idx(new_entity)

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st等于array of service trees, one per ioprio_class 加new_entity_class_idx

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change_without_lookup等于new_entity_class_idx恒等于bfq_class_idx(next_in_service)且非q_gt - compare two timestamps.*@a: first ts.*@b: second ts.* Return @a > @b, dealing with wrapping correctly.且q_gt - compare two timestamps.*@a: first ts.*@b: second ts.* Return @a > @b, dealing with wrapping correctly.

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如果change_without_lookup则next_in_service等于new_entity

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如果非change_without_lookup则next_in_service等于bfq_lookup_next_entity(sd, expiration)

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如果next_in_service则

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new_budget_triggers_change等于bfq_update_parent_budget(next_in_service)

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parent_sched_may_change等于非head-of-line entity (see comments above) 或new_budget_triggers_change

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head-of-line entity (see comments above) 等于next_in_service

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如果非next_in_service则返回:parent_sched_may_change

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返回:parent_sched_may_change

**调用者**
名称	描述
bfq_activate_requeue_entity	q_activate_requeue_entity - activate or requeue an entity representing a* bfq_queue, and activate, requeue or reposition* all ancestors for which such an update becomes* necessary
bfq_deactivate_entity	q_deactivate_entity - deactivate an entity representing a bfq_queue
bfq_get_next_queue	Get next queue for service.

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