函数逻辑报告

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:kernel\cgroup\cgroup.c Create Date:2022-07-27 12:12:08
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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函数名称：ss_has_online_children - does a css have online children*@css: the target css* Returns %true if @css has any online children; otherwise, %false. This* function can be called from any context but the caller is responsible

函数原型：bool css_has_online_children(struct cgroup_subsys_state *css)

返回类型：bool

参数：

类型参数名称
struct cgroup_subsys_state *css
4322  bool ret = false
4324  _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
4326  如果flags按位与CSS_ONLINE则
4327  ret = true
4328  退出
4331  _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()
4332  返回:ret
调用者
名称描述
cgroup_destroy_lockedgroup_destroy_locked - the first stage of cgroup destruction*@cgrp: cgroup to be destroyed* css's make use of percpu refcnts whose killing latency shouldn't be* exposed to userland and are RCU protected
cgroup1_check_for_release
update_parent_subparts_cpumaskpdate_parent_subparts_cpumask - update subparts_cpus mask of parent cpuset*@cpuset: The cpuset that requests change in partition root state*@cmd: Partition root state change command*@newmask: Optional new cpumask for partcmd_update*@tmp: Temporary addmask
releasable_read
devcgroup_update_accessModify the exception list using allow/deny rules