函数逻辑报告

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:kernel\kthread.c Create Date:2022-07-27 10:30:55
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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函数名称：kthread_queue_delayed_work - queue the associated kthread work* after a delay

函数原型：bool kthread_queue_delayed_work(struct kthread_worker *worker, struct kthread_delayed_work *dwork, unsigned long delay)

返回类型：bool

参数：

类型参数名称
struct kthread_worker *worker
struct kthread_delayed_work *dwork
unsigned longdelay
917  work等于work
919  bool ret = false
921  raw_spin_lock_irqsave( & lock, flags)
923  如果非Returns true when the work could not be queued at the moment.* It happens when it is already pending in a worker list* or when it is being cancelled.则
924  __kthread_queue_delayed_work(worker, dwork, delay)
925  ret = true
928  raw_spin_unlock_irqrestore( & lock, flags)
929  返回:ret
调用者
名称描述
psi_schedule_poll_workSchedule polling if it's not already scheduled. It's safe to call even from* hotpath because even though kthread_queue_delayed_work takes worker->lock* spinlock that spinlock is never contended due to poll_scheduled atomic* preventing such competition.