diff options
| author | Li Zefan <lizefan@huawei.com> | 2013-09-23 16:57:03 +0800 |
|---|---|---|
| committer | Tejun Heo <tj@kernel.org> | 2013-09-23 21:44:16 -0400 |
| commit | 2ff2a7d03bbe472ed44a8380dbdbea490d81c59d (patch) | |
| tree | 28680445fe0241be32994619cbf9491de7debf46 /include/linux/cgroup.h | |
| parent | b862783594847a1087cd18c8aeac5727608c3c67 (diff) | |
cgroup: kill css_id
The only user of css_id was memcg, and it has been convered to use
cgroup->id, so kill css_id.
Signed-off-by: Li Zefan <lizefan@huwei.com>
Reviewed-by: Michal Hocko <mhocko@suse.cz>
Acked-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Tejun Heo <tj@kernel.org>
Diffstat (limited to 'include/linux/cgroup.h')
| -rw-r--r-- | include/linux/cgroup.h | 37 |
1 files changed, 0 insertions, 37 deletions
diff --git a/include/linux/cgroup.h b/include/linux/cgroup.h index 3561d305b1e0..39c1d9469677 100644 --- a/include/linux/cgroup.h +++ b/include/linux/cgroup.h @@ -612,11 +612,6 @@ struct cgroup_subsys { int subsys_id; int disabled; int early_init; - /* - * True if this subsys uses ID. ID is not available before cgroup_init() - * (not available in early_init time.) - */ - bool use_id; /* * If %false, this subsystem is properly hierarchical - @@ -642,9 +637,6 @@ struct cgroup_subsys { */ struct cgroupfs_root *root; struct list_head sibling; - /* used when use_id == true */ - struct idr idr; - spinlock_t id_lock; /* list of cftype_sets */ struct list_head cftsets; @@ -875,35 +867,6 @@ int css_scan_tasks(struct cgroup_subsys_state *css, int cgroup_attach_task_all(struct task_struct *from, struct task_struct *); int cgroup_transfer_tasks(struct cgroup *to, struct cgroup *from); -/* - * CSS ID is ID for cgroup_subsys_state structs under subsys. This only works - * if cgroup_subsys.use_id == true. It can be used for looking up and scanning. - * CSS ID is assigned at cgroup allocation (create) automatically - * and removed when subsys calls free_css_id() function. This is because - * the lifetime of cgroup_subsys_state is subsys's matter. - * - * Looking up and scanning function should be called under rcu_read_lock(). - * Taking cgroup_mutex is not necessary for following calls. - * But the css returned by this routine can be "not populated yet" or "being - * destroyed". The caller should check css and cgroup's status. - */ - -/* - * Typically Called at ->destroy(), or somewhere the subsys frees - * cgroup_subsys_state. - */ -void free_css_id(struct cgroup_subsys *ss, struct cgroup_subsys_state *css); - -/* Find a cgroup_subsys_state which has given ID */ - -struct cgroup_subsys_state *css_lookup(struct cgroup_subsys *ss, int id); - -/* Returns true if root is ancestor of cg */ -bool css_is_ancestor(struct cgroup_subsys_state *cg, - const struct cgroup_subsys_state *root); - -/* Get id and depth of css */ -unsigned short css_id(struct cgroup_subsys_state *css); struct cgroup_subsys_state *css_from_dir(struct dentry *dentry, struct cgroup_subsys *ss); |