Merge tag 'f2fs-for-5.5' of git://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs

[linux.git] / include / linux / debugfs.h

diff --git a/include/linux/debugfs.h b/include/linux/debugfs.h
index 58424eb3b3291ae3183506d5d951ab425dccb51c..bf9b6cafa4c26a680df1e9bfbd9b175a66e63807 100644 (file)
--- a/include/linux/debugfs.h
+++ b/include/linux/debugfs.h
@@ -54,6 +54,8 @@ static const struct file_operations __fops = {                                \
        .llseek  = no_llseek,                                           \
 }
 
+typedef struct vfsmount *(*debugfs_automount_t)(struct dentry *, void *);
+
 #if defined(CONFIG_DEBUG_FS)
 
 struct dentry *debugfs_lookup(const char *name, struct dentry *parent);
@@ -75,7 +77,6 @@ struct dentry *debugfs_create_dir(const char *name, struct dentry *parent);
 struct dentry *debugfs_create_symlink(const char *name, struct dentry *parent,
                                      const char *dest);
 
-typedef struct vfsmount *(*debugfs_automount_t)(struct dentry *, void *);
 struct dentry *debugfs_create_automount(const char *name,
                                        struct dentry *parent,
                                        debugfs_automount_t f,
@@ -97,28 +98,28 @@ ssize_t debugfs_attr_write(struct file *file, const char __user *buf,
 struct dentry *debugfs_rename(struct dentry *old_dir, struct dentry *old_dentry,
                 struct dentry *new_dir, const char *new_name);
 
-struct dentry *debugfs_create_u8(const char *name, umode_t mode,
-                                struct dentry *parent, u8 *value);
-struct dentry *debugfs_create_u16(const char *name, umode_t mode,
-                                 struct dentry *parent, u16 *value);
+void debugfs_create_u8(const char *name, umode_t mode, struct dentry *parent,
+                      u8 *value);
+void debugfs_create_u16(const char *name, umode_t mode, struct dentry *parent,
+                       u16 *value);
 struct dentry *debugfs_create_u32(const char *name, umode_t mode,
                                  struct dentry *parent, u32 *value);
-struct dentry *debugfs_create_u64(const char *name, umode_t mode,
-                                 struct dentry *parent, u64 *value);
+void debugfs_create_u64(const char *name, umode_t mode, struct dentry *parent,
+                       u64 *value);
 struct dentry *debugfs_create_ulong(const char *name, umode_t mode,
                                    struct dentry *parent, unsigned long *value);
-struct dentry *debugfs_create_x8(const char *name, umode_t mode,
-                                struct dentry *parent, u8 *value);
-struct dentry *debugfs_create_x16(const char *name, umode_t mode,
-                                 struct dentry *parent, u16 *value);
-struct dentry *debugfs_create_x32(const char *name, umode_t mode,
-                                 struct dentry *parent, u32 *value);
-struct dentry *debugfs_create_x64(const char *name, umode_t mode,
-                                 struct dentry *parent, u64 *value);
-struct dentry *debugfs_create_size_t(const char *name, umode_t mode,
-                                    struct dentry *parent, size_t *value);
-struct dentry *debugfs_create_atomic_t(const char *name, umode_t mode,
-                                    struct dentry *parent, atomic_t *value);
+void debugfs_create_x8(const char *name, umode_t mode, struct dentry *parent,
+                      u8 *value);
+void debugfs_create_x16(const char *name, umode_t mode, struct dentry *parent,
+                       u16 *value);
+void debugfs_create_x32(const char *name, umode_t mode, struct dentry *parent,
+                       u32 *value);
+void debugfs_create_x64(const char *name, umode_t mode, struct dentry *parent,
+                       u64 *value);
+void debugfs_create_size_t(const char *name, umode_t mode,
+                          struct dentry *parent, size_t *value);
+void debugfs_create_atomic_t(const char *name, umode_t mode,
+                            struct dentry *parent, atomic_t *value);
 struct dentry *debugfs_create_bool(const char *name, umode_t mode,
                                  struct dentry *parent, bool *value);
 
@@ -203,7 +204,7 @@ static inline struct dentry *debugfs_create_symlink(const char *name,
 
 static inline struct dentry *debugfs_create_automount(const char *name,
                                        struct dentry *parent,
-                                       struct vfsmount *(*f)(void *),
+                                       debugfs_automount_t f,
                                        void *data)
 {
        return ERR_PTR(-ENODEV);
@@ -244,19 +245,11 @@ static inline struct dentry *debugfs_rename(struct dentry *old_dir, struct dentr
        return ERR_PTR(-ENODEV);
 }
 
-static inline struct dentry *debugfs_create_u8(const char *name, umode_t mode,
-                                              struct dentry *parent,
-                                              u8 *value)
-{
-       return ERR_PTR(-ENODEV);
-}
+static inline void debugfs_create_u8(const char *name, umode_t mode,
+                                    struct dentry *parent, u8 *value) { }
 
-static inline struct dentry *debugfs_create_u16(const char *name, umode_t mode,
-                                               struct dentry *parent,
-                                               u16 *value)
-{
-       return ERR_PTR(-ENODEV);
-}
+static inline void debugfs_create_u16(const char *name, umode_t mode,
+                                     struct dentry *parent, u16 *value) { }
 
 static inline struct dentry *debugfs_create_u32(const char *name, umode_t mode,
                                                struct dentry *parent,
@@ -265,12 +258,8 @@ static inline struct dentry *debugfs_create_u32(const char *name, umode_t mode,
        return ERR_PTR(-ENODEV);
 }
 
-static inline struct dentry *debugfs_create_u64(const char *name, umode_t mode,
-                                               struct dentry *parent,
-                                               u64 *value)
-{
-       return ERR_PTR(-ENODEV);
-}
+static inline void debugfs_create_u64(const char *name, umode_t mode,
+                                     struct dentry *parent, u64 *value) { }
 
 static inline struct dentry *debugfs_create_ulong(const char *name,
                                                umode_t mode,
@@ -280,46 +269,26 @@ static inline struct dentry *debugfs_create_ulong(const char *name,
        return ERR_PTR(-ENODEV);
 }
 
-static inline struct dentry *debugfs_create_x8(const char *name, umode_t mode,
-                                              struct dentry *parent,
-                                              u8 *value)
-{
-       return ERR_PTR(-ENODEV);
-}
+static inline void debugfs_create_x8(const char *name, umode_t mode,
+                                    struct dentry *parent, u8 *value) { }
 
-static inline struct dentry *debugfs_create_x16(const char *name, umode_t mode,
-                                               struct dentry *parent,
-                                               u16 *value)
-{
-       return ERR_PTR(-ENODEV);
-}
+static inline void debugfs_create_x16(const char *name, umode_t mode,
+                                     struct dentry *parent, u16 *value) { }
 
-static inline struct dentry *debugfs_create_x32(const char *name, umode_t mode,
-                                               struct dentry *parent,
-                                               u32 *value)
-{
-       return ERR_PTR(-ENODEV);
-}
+static inline void debugfs_create_x32(const char *name, umode_t mode,
+                                     struct dentry *parent, u32 *value) { }
 
-static inline struct dentry *debugfs_create_x64(const char *name, umode_t mode,
-                                               struct dentry *parent,
-                                               u64 *value)
-{
-       return ERR_PTR(-ENODEV);
-}
+static inline void debugfs_create_x64(const char *name, umode_t mode,
+                                     struct dentry *parent, u64 *value) { }
 
-static inline struct dentry *debugfs_create_size_t(const char *name, umode_t mode,
-                                    struct dentry *parent,
-                                    size_t *value)
-{
-       return ERR_PTR(-ENODEV);
-}
+static inline void debugfs_create_size_t(const char *name, umode_t mode,
+                                        struct dentry *parent, size_t *value)
+{ }
 
-static inline struct dentry *debugfs_create_atomic_t(const char *name, umode_t mode,
-                                    struct dentry *parent, atomic_t *value)
-{
-       return ERR_PTR(-ENODEV);
-}
+static inline void debugfs_create_atomic_t(const char *name, umode_t mode,
+                                          struct dentry *parent,
+                                          atomic_t *value)
+{ }
 
 static inline struct dentry *debugfs_create_bool(const char *name, umode_t mode,
                                                 struct dentry *parent,
@@ -383,4 +352,25 @@ static inline ssize_t debugfs_write_file_bool(struct file *file,
 
 #endif
 
+/**
+ * debugfs_create_xul - create a debugfs file that is used to read and write an
+ * unsigned long value, formatted in hexadecimal
+ * @name: a pointer to a string containing the name of the file to create.
+ * @mode: the permission that the file should have
+ * @parent: a pointer to the parent dentry for this file.  This should be a
+ *          directory dentry if set.  If this parameter is %NULL, then the
+ *          file will be created in the root of the debugfs filesystem.
+ * @value: a pointer to the variable that the file should read to and write
+ *         from.
+ */
+static inline void debugfs_create_xul(const char *name, umode_t mode,
+                                     struct dentry *parent,
+                                     unsigned long *value)
+{
+       if (sizeof(*value) == sizeof(u32))
+               debugfs_create_x32(name, mode, parent, (u32 *)value);
+       else
+               debugfs_create_x64(name, mode, parent, (u64 *)value);
+}
+
 #endif