函数逻辑报告

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:kernel\cgroup\legacy_freezer.c Create Date:2022-07-27 12:16:26
Last Modify:2020-03-12 14:18:49 Copyright©Brick
首页 函数Tree
注解内核,赢得工具下载SCCTEnglish

函数名称：zer_fork - cgroup post fork callback*@task: a task which has just been forked*@task has just been created and should conform to the current state of* the cgroup_freezer it belongs to. This function may race against* freezer_attach()

函数原型：static void freezer_fork(struct task_struct *task)

返回类型：void

参数：

类型参数名称
struct task_struct *task
214  如果测试任务是否属于根的CSS则返回
217  mutex_lock( & freezer_mutex)
218  _read_lock() - mark the beginning of an RCU read-side critical section* When synchronize_rcu() is invoked on one CPU while other CPUs* are within RCU read-side critical sections, then the* synchronize_rcu() is guaranteed to block until after all the other
220  freezer等于task_freezer(task)
221  如果state按位与CGROUP_FREEZING则ze_task - send a freeze request to given task*@p: task to send the request to* If @p is freezing, the freeze request is sent either by sending a fake* signal (if it's not a kernel thread) or waking it up (if it's a kernel* thread)
224  _read_unlock() - marks the end of an RCU read-side critical section.* In most situations, rcu_read_unlock() is immune from deadlock.* However, in kernels built with CONFIG_RCU_BOOST, rcu_read_unlock()
225  mutex_unlock - release the mutex*@lock: the mutex to be released* Unlock a mutex that has been locked by this task previously.* This function must not be used in interrupt context. Unlocking* of a not locked mutex is not allowed.