cgroup_can_be_thread_root

Name:an @cgrp become a thread root? should always be true for a thread root

Proto:static bool cgroup_can_be_thread_root(struct cgroup *cgrp)

Type:bool

Parameter:

Type	Parameter	Name
struct cgroup *	cgrp

359

If an @cgrp host both domain and threaded children? Then Return true

363

If cgroup_is_threaded(cgrp) Then Return false

367

If nr_populated_domain_children Then Return false

371

If * 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 & ~some controllers can be threaded on the default hierarchy Then Return false

374

Return true

**Caller**
Name	Describe
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*
cgroup_vet_subtree_control_enable
cgroup_enable_threaded	group_enable_threaded - make @cgrp threaded@cgrp: the target cgroup Called when "threaded" is written to the cgroup.type interface file and* tries to make @cgrp threaded and join the parent's resource domain.

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