cgroup: clean up cgroup.h

- replace old name 'cont' with 'cgrp' (Paul Menage did this cleanup for
  cgroup.c in commit bd89aabc6761de1c35b154fe6f914a445d301510)
- remove a duplicate declaration of cgroup_path()

Signed-off-by: Li Zefan <lizf@cn.fujitsu.com>
Acked-by: Paul Menage <menage@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/include/linux/cgroup.h b/include/linux/cgroup.h
index 2ebf7af..028ba3b 100644 (file)
--- a/include/linux/cgroup.h
+++ b/include/linux/cgroup.h
@@ -186,15 +186,15 @@ struct cftype {
        char name[MAX_CFTYPE_NAME];
        int private;
        int (*open) (struct inode *inode, struct file *file);
-       ssize_t (*read) (struct cgroup *cont, struct cftype *cft,
+       ssize_t (*read) (struct cgroup *cgrp, struct cftype *cft,
                         struct file *file,
                         char __user *buf, size_t nbytes, loff_t *ppos);
        /*
         * read_uint() is a shortcut for the common case of returning a
         * single integer. Use it in place of read()
         */
-       u64 (*read_uint) (struct cgroup *cont, struct cftype *cft);
-       ssize_t (*write) (struct cgroup *cont, struct cftype *cft,
+       u64 (*read_uint) (struct cgroup *cgrp, struct cftype *cft);
+       ssize_t (*write) (struct cgroup *cgrp, struct cftype *cft,
                          struct file *file,
                          const char __user *buf, size_t nbytes, loff_t *ppos);
 
@@ -203,7 +203,7 @@ struct cftype {
         * a single integer (as parsed by simple_strtoull) from
         * userspace. Use in place of write(); return 0 or error.
         */
-       int (*write_uint) (struct cgroup *cont, struct cftype *cft, u64 val);
+       int (*write_uint) (struct cgroup *cgrp, struct cftype *cft, u64 val);
 
        int (*release) (struct inode *inode, struct file *file);
 };
@@ -218,41 +218,41 @@ struct cgroup_scanner {
 
 /* Add a new file to the given cgroup directory. Should only be
  * called by subsystems from within a populate() method */
-int cgroup_add_file(struct cgroup *cont, struct cgroup_subsys *subsys,
+int cgroup_add_file(struct cgroup *cgrp, struct cgroup_subsys *subsys,
                       const struct cftype *cft);
 
 /* Add a set of new files to the given cgroup directory. Should
  * only be called by subsystems from within a populate() method */
-int cgroup_add_files(struct cgroup *cont,
+int cgroup_add_files(struct cgroup *cgrp,
                        struct cgroup_subsys *subsys,
                        const struct cftype cft[],
                        int count);
 
-int cgroup_is_removed(const struct cgroup *cont);
+int cgroup_is_removed(const struct cgroup *cgrp);
 
-int cgroup_path(const struct cgroup *cont, char *buf, int buflen);
+int cgroup_path(const struct cgroup *cgrp, char *buf, int buflen);
 
-int cgroup_task_count(const struct cgroup *cont);
+int cgroup_task_count(const struct cgroup *cgrp);
 
 /* Return true if the cgroup is a descendant of the current cgroup */
-int cgroup_is_descendant(const struct cgroup *cont);
+int cgroup_is_descendant(const struct cgroup *cgrp);
 
 /* Control Group subsystem type. See Documentation/cgroups.txt for details */
 
 struct cgroup_subsys {
        struct cgroup_subsys_state *(*create)(struct cgroup_subsys *ss,
-                                                 struct cgroup *cont);
-       void (*pre_destroy)(struct cgroup_subsys *ss, struct cgroup *cont);
-       void (*destroy)(struct cgroup_subsys *ss, struct cgroup *cont);
+                                                 struct cgroup *cgrp);
+       void (*pre_destroy)(struct cgroup_subsys *ss, struct cgroup *cgrp);
+       void (*destroy)(struct cgroup_subsys *ss, struct cgroup *cgrp);
        int (*can_attach)(struct cgroup_subsys *ss,
-                         struct cgroup *cont, struct task_struct *tsk);
-       void (*attach)(struct cgroup_subsys *ss, struct cgroup *cont,
-                       struct cgroup *old_cont, struct task_struct *tsk);
+                         struct cgroup *cgrp, struct task_struct *tsk);
+       void (*attach)(struct cgroup_subsys *ss, struct cgroup *cgrp,
+                       struct cgroup *old_cgrp, struct task_struct *tsk);
        void (*fork)(struct cgroup_subsys *ss, struct task_struct *task);
        void (*exit)(struct cgroup_subsys *ss, struct task_struct *task);
        int (*populate)(struct cgroup_subsys *ss,
-                       struct cgroup *cont);
-       void (*post_clone)(struct cgroup_subsys *ss, struct cgroup *cont);
+                       struct cgroup *cgrp);
+       void (*post_clone)(struct cgroup_subsys *ss, struct cgroup *cgrp);
        void (*bind)(struct cgroup_subsys *ss, struct cgroup *root);
        int subsys_id;
        int active;
@@ -273,9 +273,9 @@ struct cgroup_subsys {
 #undef SUBSYS
 
 static inline struct cgroup_subsys_state *cgroup_subsys_state(
-       struct cgroup *cont, int subsys_id)
+       struct cgroup *cgrp, int subsys_id)
 {
-       return cont->subsys[subsys_id];
+       return cgrp->subsys[subsys_id];
 }
 
 static inline struct cgroup_subsys_state *task_subsys_state(
@@ -290,8 +290,6 @@ static inline struct cgroup* task_cgroup(struct task_struct *task,
        return task_subsys_state(task, subsys_id)->cgroup;
 }
 
-int cgroup_path(const struct cgroup *cont, char *buf, int buflen);
-
 int cgroup_clone(struct task_struct *tsk, struct cgroup_subsys *ss);
 
 /* A cgroup_iter should be treated as an opaque object */
@@ -313,10 +311,10 @@ struct cgroup_iter {
  *    - cgroup_scan_tasks() holds the css_set_lock when calling the test_task()
  *      callback, but not while calling the process_task() callback.
  */
-void cgroup_iter_start(struct cgroup *cont, struct cgroup_iter *it);
-struct task_struct *cgroup_iter_next(struct cgroup *cont,
+void cgroup_iter_start(struct cgroup *cgrp, struct cgroup_iter *it);
+struct task_struct *cgroup_iter_next(struct cgroup *cgrp,
                                        struct cgroup_iter *it);
-void cgroup_iter_end(struct cgroup *cont, struct cgroup_iter *it);
+void cgroup_iter_end(struct cgroup *cgrp, struct cgroup_iter *it);
 int cgroup_scan_tasks(struct cgroup_scanner *scan);
 int cgroup_attach_task(struct cgroup *, struct task_struct *);