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 12:10:48
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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函数名称：group_migrate_vet_dst - verify whether a cgroup can be migration destination*@dst_cgrp: destination cgroup to test* On the default hierarchy, except for the mixable, (possible) thread root* and threaded cgroups, subtree_control must be zero for migration*

函数原型：int cgroup_migrate_vet_dst(struct cgroup *dst_cgrp)

返回类型：int

参数：

类型参数名称
struct cgroup *dst_cgrp
2500  如果非group_on_dfl - test whether a cgroup is on the default hierarchy*@cgrp: the cgroup of interest* The default hierarchy is the v2 interface of cgroup and this function* can be used to test whether a cgroup is on the default hierarchy for* cases where a 则返回:0
2504  如果非a domain which isn't connected to the root w/o brekage can't be used 则返回:负EOPNOTSUPP
2508  如果an @cgrp host both domain and threaded children? 则返回:0
2515  如果an @cgrp become a thread root? should always be true for a thread root 或cgroup_is_threaded(dst_cgrp)则返回:0
2519  如果* The bitmask of subsystems enabled on the child cgroups. * ->subtree_control is the one configured through * "cgroup.subtree_control" while ->child_ss_mask is the effective * one which may have more subsystems enabled. Controller knobs * are made availabl则返回:负EBUSY
2522  返回:0
调用者
名称描述
cgroup_attach_taskgroup_attach_task - attach a task or a whole threadgroup to a cgroup*@dst_cgrp: the cgroup to attach to*@leader: the task or the leader of the threadgroup to be attached*@threadgroup: attach the whole threadgroup?
cgroup_transfer_tasksgroup_trasnsfer_tasks - move tasks from one cgroup to another*@to: cgroup to which the tasks will be moved*@from: cgroup in which the tasks currently reside* Locking rules between cgroup_post_fork() and the migration path* guarantee that, if a task is