1 /* SPDX-License-Identifier: GPL-2.0 */
3 * linux/cgroup-defs.h - basic definitions for cgroup
5 * This file provides basic type and interface. Include this file directly
6 * only if necessary to avoid cyclic dependencies.
8 #ifndef _LINUX_CGROUP_DEFS_H
9 #define _LINUX_CGROUP_DEFS_H
11 #include <linux/limits.h>
12 #include <linux/list.h>
13 #include <linux/idr.h>
14 #include <linux/wait.h>
15 #include <linux/mutex.h>
16 #include <linux/rcupdate.h>
17 #include <linux/refcount.h>
18 #include <linux/percpu-refcount.h>
19 #include <linux/percpu-rwsem.h>
20 #include <linux/u64_stats_sync.h>
21 #include <linux/workqueue.h>
22 #include <linux/bpf-cgroup-defs.h>
23 #include <linux/psi_types.h>
30 struct cgroup_taskset;
33 struct kernfs_open_file;
35 struct poll_table_struct;
37 #define MAX_CGROUP_TYPE_NAMELEN 32
38 #define MAX_CGROUP_ROOT_NAMELEN 64
39 #define MAX_CFTYPE_NAME 64
41 /* define the enumeration of all cgroup subsystems */
42 #define SUBSYS(_x) _x ## _cgrp_id,
43 enum cgroup_subsys_id {
44 #include <linux/cgroup_subsys.h>
49 /* bits in struct cgroup_subsys_state flags field */
51 CSS_NO_REF = (1 << 0), /* no reference counting for this css */
52 CSS_ONLINE = (1 << 1), /* between ->css_online() and ->css_offline() */
53 CSS_RELEASED = (1 << 2), /* refcnt reached zero, released */
54 CSS_VISIBLE = (1 << 3), /* css is visible to userland */
55 CSS_DYING = (1 << 4), /* css is dying */
58 /* bits in struct cgroup flags field */
60 /* Control Group requires release notifications to userspace */
61 CGRP_NOTIFY_ON_RELEASE,
63 * Clone the parent's configuration when creating a new child
64 * cpuset cgroup. For historical reasons, this option can be
65 * specified at mount time and thus is implemented here.
67 CGRP_CPUSET_CLONE_CHILDREN,
69 /* Control group has to be frozen. */
72 /* Cgroup is frozen. */
75 /* Control group has to be killed. */
79 /* cgroup_root->flags */
81 CGRP_ROOT_NOPREFIX = (1 << 1), /* mounted subsystems have no named prefix */
82 CGRP_ROOT_XATTR = (1 << 2), /* supports extended attributes */
85 * Consider namespaces as delegation boundaries. If this flag is
86 * set, controller specific interface files in a namespace root
87 * aren't writeable from inside the namespace.
89 CGRP_ROOT_NS_DELEGATE = (1 << 3),
92 * Enable cpuset controller in v1 cgroup to use v2 behavior.
94 CGRP_ROOT_CPUSET_V2_MODE = (1 << 4),
97 * Enable legacy local memory.events.
99 CGRP_ROOT_MEMORY_LOCAL_EVENTS = (1 << 5),
102 * Enable recursive subtree protection
104 CGRP_ROOT_MEMORY_RECURSIVE_PROT = (1 << 6),
109 CFTYPE_ONLY_ON_ROOT = (1 << 0), /* only create on root cgrp */
110 CFTYPE_NOT_ON_ROOT = (1 << 1), /* don't create on root cgrp */
111 CFTYPE_NS_DELEGATABLE = (1 << 2), /* writeable beyond delegation boundaries */
113 CFTYPE_NO_PREFIX = (1 << 3), /* (DON'T USE FOR NEW FILES) no subsys prefix */
114 CFTYPE_WORLD_WRITABLE = (1 << 4), /* (DON'T USE FOR NEW FILES) S_IWUGO */
115 CFTYPE_DEBUG = (1 << 5), /* create when cgroup_debug */
116 CFTYPE_PRESSURE = (1 << 6), /* only if pressure feature is enabled */
118 /* internal flags, do not use outside cgroup core proper */
119 __CFTYPE_ONLY_ON_DFL = (1 << 16), /* only on default hierarchy */
120 __CFTYPE_NOT_ON_DFL = (1 << 17), /* not on default hierarchy */
124 * cgroup_file is the handle for a file instance created in a cgroup which
125 * is used, for example, to generate file changed notifications. This can
126 * be obtained by setting cftype->file_offset.
129 /* do not access any fields from outside cgroup core */
130 struct kernfs_node *kn;
131 unsigned long notified_at;
132 struct timer_list notify_timer;
136 * Per-subsystem/per-cgroup state maintained by the system. This is the
137 * fundamental structural building block that controllers deal with.
139 * Fields marked with "PI:" are public and immutable and may be accessed
140 * directly without synchronization.
142 struct cgroup_subsys_state {
143 /* PI: the cgroup that this css is attached to */
144 struct cgroup *cgroup;
146 /* PI: the cgroup subsystem that this css is attached to */
147 struct cgroup_subsys *ss;
149 /* reference count - access via css_[try]get() and css_put() */
150 struct percpu_ref refcnt;
152 /* siblings list anchored at the parent's ->children */
153 struct list_head sibling;
154 struct list_head children;
156 /* flush target list anchored at cgrp->rstat_css_list */
157 struct list_head rstat_css_node;
160 * PI: Subsys-unique ID. 0 is unused and root is always 1. The
161 * matching css can be looked up using css_from_id().
168 * Monotonically increasing unique serial number which defines a
169 * uniform order among all csses. It's guaranteed that all
170 * ->children lists are in the ascending order of ->serial_nr and
171 * used to allow interrupting and resuming iterations.
176 * Incremented by online self and children. Used to guarantee that
177 * parents are not offlined before their children.
181 /* percpu_ref killing and RCU release */
182 struct work_struct destroy_work;
183 struct rcu_work destroy_rwork;
186 * PI: the parent css. Placed here for cache proximity to following
187 * fields of the containing structure.
189 struct cgroup_subsys_state *parent;
193 * A css_set is a structure holding pointers to a set of
194 * cgroup_subsys_state objects. This saves space in the task struct
195 * object and speeds up fork()/exit(), since a single inc/dec and a
196 * list_add()/del() can bump the reference count on the entire cgroup
201 * Set of subsystem states, one for each subsystem. This array is
202 * immutable after creation apart from the init_css_set during
203 * subsystem registration (at boot time).
205 struct cgroup_subsys_state *subsys[CGROUP_SUBSYS_COUNT];
207 /* reference count */
211 * For a domain cgroup, the following points to self. If threaded,
212 * to the matching cset of the nearest domain ancestor. The
213 * dom_cset provides access to the domain cgroup and its csses to
214 * which domain level resource consumptions should be charged.
216 struct css_set *dom_cset;
218 /* the default cgroup associated with this css_set */
219 struct cgroup *dfl_cgrp;
221 /* internal task count, protected by css_set_lock */
225 * Lists running through all tasks using this cgroup group.
226 * mg_tasks lists tasks which belong to this cset but are in the
227 * process of being migrated out or in. Protected by
228 * css_set_rwsem, but, during migration, once tasks are moved to
229 * mg_tasks, it can be read safely while holding cgroup_mutex.
231 struct list_head tasks;
232 struct list_head mg_tasks;
233 struct list_head dying_tasks;
235 /* all css_task_iters currently walking this cset */
236 struct list_head task_iters;
239 * On the default hierarchy, ->subsys[ssid] may point to a css
240 * attached to an ancestor instead of the cgroup this css_set is
241 * associated with. The following node is anchored at
242 * ->subsys[ssid]->cgroup->e_csets[ssid] and provides a way to
243 * iterate through all css's attached to a given cgroup.
245 struct list_head e_cset_node[CGROUP_SUBSYS_COUNT];
247 /* all threaded csets whose ->dom_cset points to this cset */
248 struct list_head threaded_csets;
249 struct list_head threaded_csets_node;
252 * List running through all cgroup groups in the same hash
253 * slot. Protected by css_set_lock
255 struct hlist_node hlist;
258 * List of cgrp_cset_links pointing at cgroups referenced from this
259 * css_set. Protected by css_set_lock.
261 struct list_head cgrp_links;
264 * List of csets participating in the on-going migration either as
265 * source or destination. Protected by cgroup_mutex.
267 struct list_head mg_src_preload_node;
268 struct list_head mg_dst_preload_node;
269 struct list_head mg_node;
272 * If this cset is acting as the source of migration the following
273 * two fields are set. mg_src_cgrp and mg_dst_cgrp are
274 * respectively the source and destination cgroups of the on-going
275 * migration. mg_dst_cset is the destination cset the target tasks
276 * on this cset should be migrated to. Protected by cgroup_mutex.
278 struct cgroup *mg_src_cgrp;
279 struct cgroup *mg_dst_cgrp;
280 struct css_set *mg_dst_cset;
282 /* dead and being drained, ignore for migration */
285 /* For RCU-protected deletion */
286 struct rcu_head rcu_head;
289 struct cgroup_base_stat {
290 struct task_cputime cputime;
294 * rstat - cgroup scalable recursive statistics. Accounting is done
295 * per-cpu in cgroup_rstat_cpu which is then lazily propagated up the
296 * hierarchy on reads.
298 * When a stat gets updated, the cgroup_rstat_cpu and its ancestors are
299 * linked into the updated tree. On the following read, propagation only
300 * considers and consumes the updated tree. This makes reading O(the
301 * number of descendants which have been active since last read) instead of
302 * O(the total number of descendants).
304 * This is important because there can be a lot of (draining) cgroups which
305 * aren't active and stat may be read frequently. The combination can
306 * become very expensive. By propagating selectively, increasing reading
307 * frequency decreases the cost of each read.
309 * This struct hosts both the fields which implement the above -
310 * updated_children and updated_next - and the fields which track basic
311 * resource statistics on top of it - bsync, bstat and last_bstat.
313 struct cgroup_rstat_cpu {
315 * ->bsync protects ->bstat. These are the only fields which get
316 * updated in the hot path.
318 struct u64_stats_sync bsync;
319 struct cgroup_base_stat bstat;
322 * Snapshots at the last reading. These are used to calculate the
323 * deltas to propagate to the global counters.
325 struct cgroup_base_stat last_bstat;
328 * Child cgroups with stat updates on this cpu since the last read
329 * are linked on the parent's ->updated_children through
332 * In addition to being more compact, singly-linked list pointing
333 * to the cgroup makes it unnecessary for each per-cpu struct to
334 * point back to the associated cgroup.
336 * Protected by per-cpu cgroup_rstat_cpu_lock.
338 struct cgroup *updated_children; /* terminated by self cgroup */
339 struct cgroup *updated_next; /* NULL iff not on the list */
342 struct cgroup_freezer_state {
343 /* Should the cgroup and its descendants be frozen. */
346 /* Should the cgroup actually be frozen? */
349 /* Fields below are protected by css_set_lock */
351 /* Number of frozen descendant cgroups */
352 int nr_frozen_descendants;
355 * Number of tasks, which are counted as frozen:
356 * frozen, SIGSTOPped, and PTRACEd.
362 /* self css with NULL ->ss, points back to this cgroup */
363 struct cgroup_subsys_state self;
365 unsigned long flags; /* "unsigned long" so bitops work */
368 * The depth this cgroup is at. The root is at depth zero and each
369 * step down the hierarchy increments the level. This along with
370 * ancestor_ids[] can determine whether a given cgroup is a
371 * descendant of another without traversing the hierarchy.
375 /* Maximum allowed descent tree depth */
379 * Keep track of total numbers of visible and dying descent cgroups.
380 * Dying cgroups are cgroups which were deleted by a user,
381 * but are still existing because someone else is holding a reference.
382 * max_descendants is a maximum allowed number of descent cgroups.
384 * nr_descendants and nr_dying_descendants are protected
385 * by cgroup_mutex and css_set_lock. It's fine to read them holding
386 * any of cgroup_mutex and css_set_lock; for writing both locks
390 int nr_dying_descendants;
394 * Each non-empty css_set associated with this cgroup contributes
395 * one to nr_populated_csets. The counter is zero iff this cgroup
396 * doesn't have any tasks.
398 * All children which have non-zero nr_populated_csets and/or
399 * nr_populated_children of their own contribute one to either
400 * nr_populated_domain_children or nr_populated_threaded_children
401 * depending on their type. Each counter is zero iff all cgroups
402 * of the type in the subtree proper don't have any tasks.
404 int nr_populated_csets;
405 int nr_populated_domain_children;
406 int nr_populated_threaded_children;
408 int nr_threaded_children; /* # of live threaded child cgroups */
410 struct kernfs_node *kn; /* cgroup kernfs entry */
411 struct cgroup_file procs_file; /* handle for "cgroup.procs" */
412 struct cgroup_file events_file; /* handle for "cgroup.events" */
415 * The bitmask of subsystems enabled on the child cgroups.
416 * ->subtree_control is the one configured through
417 * "cgroup.subtree_control" while ->subtree_ss_mask is the effective
418 * one which may have more subsystems enabled. Controller knobs
419 * are made available iff it's enabled in ->subtree_control.
423 u16 old_subtree_control;
424 u16 old_subtree_ss_mask;
426 /* Private pointers for each registered subsystem */
427 struct cgroup_subsys_state __rcu *subsys[CGROUP_SUBSYS_COUNT];
429 struct cgroup_root *root;
432 * List of cgrp_cset_links pointing at css_sets with tasks in this
433 * cgroup. Protected by css_set_lock.
435 struct list_head cset_links;
438 * On the default hierarchy, a css_set for a cgroup with some
439 * susbsys disabled will point to css's which are associated with
440 * the closest ancestor which has the subsys enabled. The
441 * following lists all css_sets which point to this cgroup's css
442 * for the given subsystem.
444 struct list_head e_csets[CGROUP_SUBSYS_COUNT];
447 * If !threaded, self. If threaded, it points to the nearest
448 * domain ancestor. Inside a threaded subtree, cgroups are exempt
449 * from process granularity and no-internal-task constraint.
450 * Domain level resource consumptions which aren't tied to a
451 * specific task are charged to the dom_cgrp.
453 struct cgroup *dom_cgrp;
454 struct cgroup *old_dom_cgrp; /* used while enabling threaded */
456 /* per-cpu recursive resource statistics */
457 struct cgroup_rstat_cpu __percpu *rstat_cpu;
458 struct list_head rstat_css_list;
460 /* cgroup basic resource statistics */
461 struct cgroup_base_stat last_bstat;
462 struct cgroup_base_stat bstat;
463 struct prev_cputime prev_cputime; /* for printing out cputime */
466 * list of pidlists, up to two for each namespace (one for procs, one
467 * for tasks); created on demand.
469 struct list_head pidlists;
470 struct mutex pidlist_mutex;
472 /* used to wait for offlining of csses */
473 wait_queue_head_t offline_waitq;
475 /* used to schedule release agent */
476 struct work_struct release_agent_work;
478 /* used to track pressure stalls */
479 struct psi_group psi;
481 /* used to store eBPF programs */
482 struct cgroup_bpf bpf;
484 /* If there is block congestion on this cgroup. */
485 atomic_t congestion_count;
487 /* Used to store internal freezer state */
488 struct cgroup_freezer_state freezer;
490 /* ids of the ancestors at each level including self */
495 * A cgroup_root represents the root of a cgroup hierarchy, and may be
496 * associated with a kernfs_root to form an active hierarchy. This is
497 * internal to cgroup core. Don't access directly from controllers.
500 struct kernfs_root *kf_root;
502 /* The bitmask of subsystems attached to this hierarchy */
503 unsigned int subsys_mask;
505 /* Unique id for this hierarchy. */
508 /* The root cgroup. Root is destroyed on its release. */
511 /* for cgrp->ancestor_ids[0] */
512 u64 cgrp_ancestor_id_storage;
514 /* Number of cgroups in the hierarchy, used only for /proc/cgroups */
517 /* A list running through the active hierarchies */
518 struct list_head root_list;
520 /* Hierarchy-specific flags */
523 /* The path to use for release notifications. */
524 char release_agent_path[PATH_MAX];
526 /* The name for this hierarchy - may be empty */
527 char name[MAX_CGROUP_ROOT_NAMELEN];
531 * struct cftype: handler definitions for cgroup control files
533 * When reading/writing to a file:
534 * - the cgroup to use is file->f_path.dentry->d_parent->d_fsdata
535 * - the 'cftype' of the file is file->f_path.dentry->d_fsdata
539 * By convention, the name should begin with the name of the
540 * subsystem, followed by a period. Zero length string indicates
541 * end of cftype array.
543 char name[MAX_CFTYPE_NAME];
544 unsigned long private;
547 * The maximum length of string, excluding trailing nul, that can
548 * be passed to write. If < PAGE_SIZE-1, PAGE_SIZE-1 is assumed.
550 size_t max_write_len;
556 * If non-zero, should contain the offset from the start of css to
557 * a struct cgroup_file field. cgroup will record the handle of
558 * the created file into it. The recorded handle can be used as
559 * long as the containing css remains accessible.
561 unsigned int file_offset;
564 * Fields used for internal bookkeeping. Initialized automatically
565 * during registration.
567 struct cgroup_subsys *ss; /* NULL for cgroup core files */
568 struct list_head node; /* anchored at ss->cfts */
569 struct kernfs_ops *kf_ops;
571 int (*open)(struct kernfs_open_file *of);
572 void (*release)(struct kernfs_open_file *of);
575 * read_u64() is a shortcut for the common case of returning a
576 * single integer. Use it in place of read()
578 u64 (*read_u64)(struct cgroup_subsys_state *css, struct cftype *cft);
580 * read_s64() is a signed version of read_u64()
582 s64 (*read_s64)(struct cgroup_subsys_state *css, struct cftype *cft);
584 /* generic seq_file read interface */
585 int (*seq_show)(struct seq_file *sf, void *v);
587 /* optional ops, implement all or none */
588 void *(*seq_start)(struct seq_file *sf, loff_t *ppos);
589 void *(*seq_next)(struct seq_file *sf, void *v, loff_t *ppos);
590 void (*seq_stop)(struct seq_file *sf, void *v);
593 * write_u64() is a shortcut for the common case of accepting
594 * a single integer (as parsed by simple_strtoull) from
595 * userspace. Use in place of write(); return 0 or error.
597 int (*write_u64)(struct cgroup_subsys_state *css, struct cftype *cft,
600 * write_s64() is a signed version of write_u64()
602 int (*write_s64)(struct cgroup_subsys_state *css, struct cftype *cft,
606 * write() is the generic write callback which maps directly to
607 * kernfs write operation and overrides all other operations.
608 * Maximum write size is determined by ->max_write_len. Use
609 * of_css/cft() to access the associated css and cft.
611 ssize_t (*write)(struct kernfs_open_file *of,
612 char *buf, size_t nbytes, loff_t off);
614 __poll_t (*poll)(struct kernfs_open_file *of,
615 struct poll_table_struct *pt);
617 #ifdef CONFIG_DEBUG_LOCK_ALLOC
618 struct lock_class_key lockdep_key;
623 * Control Group subsystem type.
624 * See Documentation/admin-guide/cgroup-v1/cgroups.rst for details
626 struct cgroup_subsys {
627 struct cgroup_subsys_state *(*css_alloc)(struct cgroup_subsys_state *parent_css);
628 int (*css_online)(struct cgroup_subsys_state *css);
629 void (*css_offline)(struct cgroup_subsys_state *css);
630 void (*css_released)(struct cgroup_subsys_state *css);
631 void (*css_free)(struct cgroup_subsys_state *css);
632 void (*css_reset)(struct cgroup_subsys_state *css);
633 void (*css_rstat_flush)(struct cgroup_subsys_state *css, int cpu);
634 int (*css_extra_stat_show)(struct seq_file *seq,
635 struct cgroup_subsys_state *css);
637 int (*can_attach)(struct cgroup_taskset *tset);
638 void (*cancel_attach)(struct cgroup_taskset *tset);
639 void (*attach)(struct cgroup_taskset *tset);
640 void (*post_attach)(void);
641 int (*can_fork)(struct task_struct *task,
642 struct css_set *cset);
643 void (*cancel_fork)(struct task_struct *task, struct css_set *cset);
644 void (*fork)(struct task_struct *task);
645 void (*exit)(struct task_struct *task);
646 void (*release)(struct task_struct *task);
647 void (*bind)(struct cgroup_subsys_state *root_css);
652 * If %true, the controller, on the default hierarchy, doesn't show
653 * up in "cgroup.controllers" or "cgroup.subtree_control", is
654 * implicitly enabled on all cgroups on the default hierarchy, and
655 * bypasses the "no internal process" constraint. This is for
656 * utility type controllers which is transparent to userland.
658 * An implicit controller can be stolen from the default hierarchy
659 * anytime and thus must be okay with offline csses from previous
660 * hierarchies coexisting with csses for the current one.
662 bool implicit_on_dfl:1;
665 * If %true, the controller, supports threaded mode on the default
666 * hierarchy. In a threaded subtree, both process granularity and
667 * no-internal-process constraint are ignored and a threaded
668 * controllers should be able to handle that.
670 * Note that as an implicit controller is automatically enabled on
671 * all cgroups on the default hierarchy, it should also be
672 * threaded. implicit && !threaded is not supported.
676 /* the following two fields are initialized automatically during boot */
680 /* optional, initialized automatically during boot if not set */
681 const char *legacy_name;
683 /* link to parent, protected by cgroup_lock() */
684 struct cgroup_root *root;
686 /* idr for css->id */
690 * List of cftypes. Each entry is the first entry of an array
691 * terminated by zero length name.
693 struct list_head cfts;
696 * Base cftypes which are automatically registered. The two can
697 * point to the same array.
699 struct cftype *dfl_cftypes; /* for the default hierarchy */
700 struct cftype *legacy_cftypes; /* for the legacy hierarchies */
703 * A subsystem may depend on other subsystems. When such subsystem
704 * is enabled on a cgroup, the depended-upon subsystems are enabled
705 * together if available. Subsystems enabled due to dependency are
706 * not visible to userland until explicitly enabled. The following
707 * specifies the mask of subsystems that this one depends on.
709 unsigned int depends_on;
712 extern struct percpu_rw_semaphore cgroup_threadgroup_rwsem;
715 * cgroup_threadgroup_change_begin - threadgroup exclusion for cgroups
718 * Allows cgroup operations to synchronize against threadgroup changes
719 * using a percpu_rw_semaphore.
721 static inline void cgroup_threadgroup_change_begin(struct task_struct *tsk)
723 percpu_down_read(&cgroup_threadgroup_rwsem);
727 * cgroup_threadgroup_change_end - threadgroup exclusion for cgroups
730 * Counterpart of cgroup_threadcgroup_change_begin().
732 static inline void cgroup_threadgroup_change_end(struct task_struct *tsk)
734 percpu_up_read(&cgroup_threadgroup_rwsem);
737 #else /* CONFIG_CGROUPS */
739 #define CGROUP_SUBSYS_COUNT 0
741 static inline void cgroup_threadgroup_change_begin(struct task_struct *tsk)
746 static inline void cgroup_threadgroup_change_end(struct task_struct *tsk) {}
748 #endif /* CONFIG_CGROUPS */
750 #ifdef CONFIG_SOCK_CGROUP_DATA
753 * sock_cgroup_data is embedded at sock->sk_cgrp_data and contains
754 * per-socket cgroup information except for memcg association.
756 * On legacy hierarchies, net_prio and net_cls controllers directly
757 * set attributes on each sock which can then be tested by the network
758 * layer. On the default hierarchy, each sock is associated with the
759 * cgroup it was created in and the networking layer can match the
762 struct sock_cgroup_data {
763 struct cgroup *cgroup; /* v2 */
764 #ifdef CONFIG_CGROUP_NET_CLASSID
765 u32 classid; /* v1 */
767 #ifdef CONFIG_CGROUP_NET_PRIO
768 u16 prioidx; /* v1 */
772 static inline u16 sock_cgroup_prioidx(const struct sock_cgroup_data *skcd)
774 #ifdef CONFIG_CGROUP_NET_PRIO
775 return READ_ONCE(skcd->prioidx);
781 static inline u32 sock_cgroup_classid(const struct sock_cgroup_data *skcd)
783 #ifdef CONFIG_CGROUP_NET_CLASSID
784 return READ_ONCE(skcd->classid);
790 static inline void sock_cgroup_set_prioidx(struct sock_cgroup_data *skcd,
793 #ifdef CONFIG_CGROUP_NET_PRIO
794 WRITE_ONCE(skcd->prioidx, prioidx);
798 static inline void sock_cgroup_set_classid(struct sock_cgroup_data *skcd,
801 #ifdef CONFIG_CGROUP_NET_CLASSID
802 WRITE_ONCE(skcd->classid, classid);
806 #else /* CONFIG_SOCK_CGROUP_DATA */
808 struct sock_cgroup_data {
811 #endif /* CONFIG_SOCK_CGROUP_DATA */
813 #endif /* _LINUX_CGROUP_DEFS_H */