nsproxy: remove INIT_NSPROXY()

[safe/jmp/linux-2.6] / include / linux / cgroup.h

diff --git a/include/linux/cgroup.h b/include/linux/cgroup.h
index 2a59d31..b8ad1ea 100644 (file)
--- a/include/linux/cgroup.h
+++ b/include/linux/cgroup.h
@@ -235,6 +235,10 @@ struct cgroup {
 
        /* For RCU-protected deletion */
        struct rcu_head rcu_head;
+
+       /* List of events which userspace want to recieve */
+       struct list_head event_list;
+       spinlock_t event_list_lock;
 };
 
 /*
@@ -378,6 +382,23 @@ struct cftype {
        int (*trigger)(struct cgroup *cgrp, 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 *cgrp, 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.
+        */
+       int (*unregister_event)(struct cgroup *cgrp, struct cftype *cft,
+                       struct eventfd_ctx *eventfd);
 };
 
 struct cgroup_scanner {