cgroup: Merge branch 'memcg_event' into for-3.14

[firefly-linux-kernel-4.4.55.git] / include / linux / cgroup.h

diff --git a/include/linux/cgroup.h b/include/linux/cgroup.h
index 3561d305b1e0a2108f79030d0d8b3525db966bad..492fa01ec2d3fe25331949e10120860cb379a5c7 100644 (file)
--- a/include/linux/cgroup.h
+++ b/include/linux/cgroup.h
@@ -29,7 +29,6 @@ struct cgroup_subsys;
 struct inode;
 struct cgroup;
 struct css_id;
-struct eventfd_ctx;
 
 extern int cgroup_init_early(void);
 extern int cgroup_init(void);
@@ -239,10 +238,6 @@ struct cgroup {
        struct rcu_head rcu_head;
        struct work_struct destroy_work;
 
-       /* List of events which userspace want to receive */
-       struct list_head event_list;
-       spinlock_t event_list_lock;
-
        /* directory xattrs */
        struct simple_xattrs xattrs;
 };
@@ -506,25 +501,6 @@ struct cftype {
        int (*trigger)(struct cgroup_subsys_state *css, unsigned int event);
 
        int (*release)(struct inode *inode, struct file *file);
-
-       /*
-        * register_event() callback will be used to add new userspace
-        * waiter for changes related to the cftype. Implement it if
-        * you want to provide this functionality. Use eventfd_signal()
-        * on eventfd to send notification to userspace.
-        */
-       int (*register_event)(struct cgroup_subsys_state *css,
-                             struct cftype *cft, struct eventfd_ctx *eventfd,
-                             const char *args);
-       /*
-        * unregister_event() callback will be called when userspace
-        * closes the eventfd or on cgroup removing.
-        * This callback must be implemented, if you want provide
-        * notification functionality.
-        */
-       void (*unregister_event)(struct cgroup_subsys_state *css,
-                                struct cftype *cft,
-                                struct eventfd_ctx *eventfd);
 };
 
 /*
@@ -612,11 +588,6 @@ 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 +613,6 @@ 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 +843,6 @@ 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);