函数逻辑报告

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:kernel\sched\deadline.c Create Date:2022-07-27 10:40:21
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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函数名称：__sub_rq_bw

函数原型：static inline void __sub_rq_bw(u64 dl_bw, struct dl_rq *dl_rq)

返回类型：void

参数：

类型参数名称
u64dl_bw
struct dl_rq *dl_rq
118  old等于Utilization of the tasks "assigned" to this runqueue (including* the tasks that are in runqueue and the tasks that executed on this* CPU and blocked)
120  lockdep_assert_held( & 运行队列锁)
121  Utilization of the tasks "assigned" to this runqueue (including* the tasks that are in runqueue and the tasks that executed on this* CPU and blocked)减等于dl_bw
122  SCHED_WARN_ON(Utilization of the tasks "assigned" to this runqueue (including* the tasks that are in runqueue and the tasks that executed on this* CPU and blocked) > old)
123  如果Utilization of the tasks "assigned" to this runqueue (including* the tasks that are in runqueue and the tasks that executed on this* CPU and blocked)大于old则Utilization of the tasks "assigned" to this runqueue (including* the tasks that are in runqueue and the tasks that executed on this* CPU and blocked)等于0
125  SCHED_WARN_ON("Active utilization" for this runqueue: increased when a* task wakes up (becomes TASK_RUNNING) and decreased when a* task blocks > Utilization of the tasks "assigned" to this runqueue (including* the tasks that are in runqueue and the tasks that executed on this* CPU and blocked))
调用者
名称描述
sub_rq_bw
dl_change_utilization