cgroup_on

函数名称：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

函数原型：bool cgroup_on_dfl(const struct cgroup *cgrp)

返回类型：bool

参数：

类型	参数	名称
const struct cgroup *	cgrp

**调用者**
名称	描述
cgroup_control	subsystems visibly enabled on a cgroup
compare_css_sets	mpare_css_sets - helper function for find_existing_css_set()
link_css_set	link_css_set - a helper function to link a css_set to a cgroup@tmp_links: cgrp_cset_link objects allocated by allocate_cgrp_cset_links()@cset: the css_set to be linked*@cgrp: the destination cgroup
cgroup_file_name
css_clear_dir	ss_clear_dir - remove subsys files in a cgroup directory*@css: taget css
css_populate_dir	ss_populate_dir - create subsys files in a cgroup directory@css: target css On failure, no file is added.
cgroup_migrate_vet_dst	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*
css_visible
cgroup_addrm_files
css_free_rwork_fn	ss destruction is four-stage process
css_release_work_fn
init_and_link_css
cgroup_create	The returned cgroup is fully initialized including its control mask, but* it isn't associated with its kernfs_node and doesn't have the control* mask applied.
proc_cgroup_show	proc_cgroup_show()* - Print task's cgroup paths into seq_file, one line for each hierarchy* - Used for /proc//cgroup.
cgroup_get_from_fd	group_get_from_fd - get a cgroup pointer from a fd@fd: fd obtained by open(cgroup2_dir) Find the cgroup from a fd which should be obtained* by opening a cgroup directory. Returns a pointer to the* cgroup on success. ERR_PTR is returned if the cgroup
cgroup_transfer_tasks	group_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

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