函数逻辑报告

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:kernel\cgroup\freezer.c Create Date:2022-07-27 12:15:56
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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函数名称：Propagate the cgroup frozen state upwards by the cgroup tree.

函数原型：static void cgroup_propagate_frozen(struct cgroup *cgrp, bool frozen)

返回类型：void

参数：

类型参数名称
struct cgroup *cgrp
boolfrozen
16  desc等于1
24  当cgrp等于cgroup_parent(cgrp)循环
25  如果frozen则
26  Number of frozen descendant cgroups 加等于desc
27  如果非st_bit - Determine whether a bit is set*@nr: bit number to test*@addr: Address to start counting from且st_bit - Determine whether a bit is set*@nr: bit number to test*@addr: Address to start counting from且 Number of frozen descendant cgroups 恒等于* Keep track of total numbers of visible and dying descent cgroups. * Dying cgroups are cgroups which were deleted by a user, * but are still existing because someone else is holding a reference. * max_descendants is a maximum allowed number of descent cgr则
36  否则
37  Number of frozen descendant cgroups 减等于desc
38  如果st_bit - Determine whether a bit is set*@nr: bit number to test*@addr: Address to start counting from则
调用者
名称描述
cgroup_update_frozenRevisit the cgroup frozen state.* Checks if the cgroup is really frozen and perform all state transitions.