cgroup_destroy_root

Name:cgroup_destroy_root

Proto:static void cgroup_destroy_root(struct cgroup_root *root)

Type:void

Parameter:

Type	Parameter	Name
struct cgroup_root *	root

1316

cgrp = The root cgroup. Root is destroyed on its release.

1319

trace_cgroup_destroy_root(root)

1321

group_lock_and_drain_offline - lock cgroup_mutex and drain offlined csses*@cgrp: root of the target subtree* Because css offlining is asynchronous, userland may try to re-enable a* controller while the previous css is still around. This function grabs

1323

BUG_ON(atomic_read( & Number of cgroups in the hierarchy, used only for /proc/cgroups ))

1324

BUG_ON(!list_empty - tests whether a list is empty*@head: the list to test.)

1327

WARN_ON(rebind_subsystems( & The default hierarchy, reserved for the subsystems that are otherwise* unattached - it never has more than a single cgroup, and all tasks are* part of that cgroup., The bitmask of subsystems attached to this hierarchy ))

1333

spin_lock_irq( & css_set_lock)

1336

deletes entry from list

1337

deletes entry from list

1338

1341

spin_unlock_irq( & css_set_lock)

1343

If Not list_empty - tests whether a list is empty*@head: the list to test. Then

1344

deletes entry from list

1345

cgroup_root_count--

1348

cgroup_exit_root_id(root)

1350

mutex_unlock - release the mutex*@lock: the mutex to be released* Unlock a mutex that has been locked by this task previously.* This function must not be used in interrupt context. Unlocking* of a not locked mutex is not allowed.

1352

kernfs_destroy_root(kf_root)

1353

cgroup_free_root(root)

**Caller**
Name	Describe
css_free_rwork_fn	ss destruction is four-stage process

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