函数逻辑报告

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:kernel\sched\core.c Create Date:2022-07-27 10:36:16
Last Modify:2022-05-22 13:40:38 Copyright©Brick
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函数名称：Called in case the task @p isn't fully descheduled from its runqueue,* in this case we must do a remote wakeup. Its a 'light' wakeup though,* since all we need to do is flip p->state to TASK_RUNNING, since* the task is still ->on_rq.

函数原型：static int ttwu_remote(struct task_struct *p, int wake_flags)

返回类型：int

参数：

类型参数名称
struct task_struct *p
intwake_flags
2280  ret等于0
2282  rq等于__task_rq_lock - lock the rq @p resides on.
2283  如果进程处于任务队列则
2285  更新rq运行时间
2286  Mark the task runnable and perform wakeup-preemption.
2287  ret等于1
2289  __task_rq_unlock(rq, & rf)
2291  返回:ret
调用者
名称描述
try_to_wake_upry_to_wake_up - wake up a thread*@p: the thread to be awakened*@state: the mask of task states that can be woken*@wake_flags: wake modifier flags (WF_*)* If (@state & @p->state) @p->state = TASK_RUNNING.