Function report

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:kernel\sched\core.c Create Date:2022-07-28 09:35:40
Last Modify:2022-05-22 13:40:38 Copyright©Brick
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Name: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.

Proto:static int ttwu_remote(struct task_struct *p, int wake_flags)

Type:int

Parameter:

TypeParameterName
struct task_struct *p
intwake_flags
2280  ret = 0
2282  rq = __task_rq_lock - lock the rq @p resides on.
2283  If task_on_rq_queued(p) Then
2285  update_rq_clock(rq)
2286  Mark the task runnable and perform wakeup-preemption.
2287  ret = 1
2289  __task_rq_unlock(rq, & rf)
2291  Return ret
Caller
NameDescribe
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.