#ifdef CONFIG_PROC_FS
-extern struct proc_dir_entry *proc_root_kcore;
-
extern spinlock_t proc_subdir_lock;
extern void proc_root_init(void);
extern int proc_readdir(struct file *, void *, filldir_t);
extern struct dentry *proc_lookup(struct inode *, struct dentry *, struct nameidata *);
-extern const struct file_operations proc_kcore_operations;
-
extern int pid_ns_prepare_proc(struct pid_namespace *ns);
extern void pid_ns_release_proc(struct pid_namespace *ns);