2 files changed, 3 insertions, 29 deletions

diff --git a/include/linux/cgroup.h b/include/linux/cgroup.h
index 39c1d9469677..492fa01ec2d3 100644
--- 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);
 };
 
 /*
diff --git a/include/linux/vmpressure.h b/include/linux/vmpressure.h
index 3f3788d49362..3e4535876d37 100644
--- a/include/linux/vmpressure.h
+++ b/include/linux/vmpressure.h
@@ -7,6 +7,7 @@
 #include <linux/gfp.h>
 #include <linux/types.h>
 #include <linux/cgroup.h>
+#include <linux/eventfd.h>
 
 struct vmpressure {
         unsigned long scanned;
@@ -33,13 +34,10 @@ extern void vmpressure_init(struct vmpressure *vmpr);
 extern void vmpressure_cleanup(struct vmpressure *vmpr);
 extern struct vmpressure *memcg_to_vmpressure(struct mem_cgroup *memcg);
 extern struct cgroup_subsys_state *vmpressure_to_css(struct vmpressure *vmpr);
-extern struct vmpressure *css_to_vmpressure(struct cgroup_subsys_state *css);
-extern int vmpressure_register_event(struct cgroup_subsys_state *css,
-                                     struct cftype *cft,
+extern int vmpressure_register_event(struct mem_cgroup *memcg,
                                      struct eventfd_ctx *eventfd,
                                      const char *args);
-extern void vmpressure_unregister_event(struct cgroup_subsys_state *css,
-                                        struct cftype *cft,
+extern void vmpressure_unregister_event(struct mem_cgroup *memcg,
                                         struct eventfd_ctx *eventfd);
 #else
 static inline void vmpressure(gfp_t gfp, struct mem_cgroup *memcg,