Function report |
Source Code:kernel\sched\core.c |
Create Date:2022-07-28 09:36:05 |
Last Modify:2022-05-22 13:40:38 | Copyright©Brick |
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Annotation kernel can get tool activity | Download SCCT | Chinese |
Name:Pick up the highest-prio task:
Proto:static inline struct task_struct *pick_next_task(struct rq *rq, struct task_struct *prev, struct rq_flags *rf)
Type:struct task_struct
Parameter:
Type | Parameter | Name |
---|---|---|
struct rq * | rq | |
struct task_struct * | prev | |
struct rq_flags * | rf |
3926 | p = pick_next_task_fair(rq, prev, rf) |
3927 | If Value for the false possibility is greater at compile time(p == RETRY_TASK) Then Go to restart |
3931 | If Not p Then |
3932 | put_prev_task(rq, prev) |
3933 | p = pick_next_task_idle(rq) |
3936 | Return p |
3939 | restart : |
3955 | put_prev_task(rq, prev) |
3957 | for_each_class(class) |
3958 | p = pick_next_task(rq) |
3964 | BUG() |
Name | Describe |
---|---|
__schedule | __schedule() is the main scheduler function.* The main means of driving the scheduler and thus entering this function are:* 1. Explicit blocking: mutex, semaphore, waitqueue, etc.* 2. TIF_NEED_RESCHED flag is checked on interrupt and userspace return |
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