[mirror_ubuntu-jammy-kernel.git] / include / linux / debugfs.h

// SPDX-License-Identifier: GPL-2.0
/*
 *  debugfs.h - a tiny little debug file system
 *
 *  Copyright (C) 2004 Greg Kroah-Hartman <greg@kroah.com>
 *  Copyright (C) 2004 IBM Inc.
 *
 *  debugfs is for people to use instead of /proc or /sys.
 *  See Documentation/filesystems/ for more details.
 */

#ifndef _DEBUGFS_H_
#define _DEBUGFS_H_

#include <linux/fs.h>
#include <linux/seq_file.h>

#include <linux/types.h>
#include <linux/compiler.h>

struct device;
struct file_operations;

struct debugfs_blob_wrapper {
	void *data;
	unsigned long size;
};

struct debugfs_reg32 {
	char *name;
	unsigned long offset;
};

struct debugfs_regset32 {
	const struct debugfs_reg32 *regs;
	int nregs;
	void __iomem *base;
	struct device *dev;	/* Optional device for Runtime PM */
};

struct debugfs_u32_array {
	u32 *array;
	u32 n_elements;
};

extern struct dentry *arch_debugfs_dir;

#define DEFINE_DEBUGFS_ATTRIBUTE(__fops, __get, __set, __fmt)		\
static int __fops ## _open(struct inode *inode, struct file *file)	\
{									\
	__simple_attr_check_format(__fmt, 0ull);			\
	return simple_attr_open(inode, file, __get, __set, __fmt);	\
}									\
static const struct file_operations __fops = {				\
	.owner	 = THIS_MODULE,						\
	.open	 = __fops ## _open,					\
	.release = simple_attr_release,					\
	.read	 = debugfs_attr_read,					\
	.write	 = debugfs_attr_write,					\
	.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);

struct dentry *debugfs_create_file(const char *name, umode_t mode,
				   struct dentry *parent, void *data,
				   const struct file_operations *fops);
struct dentry *debugfs_create_file_unsafe(const char *name, umode_t mode,
				   struct dentry *parent, void *data,
				   const struct file_operations *fops);

void debugfs_create_file_size(const char *name, umode_t mode,
			      struct dentry *parent, void *data,
			      const struct file_operations *fops,
			      loff_t file_size);

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);

struct dentry *debugfs_create_automount(const char *name,
					struct dentry *parent,
					debugfs_automount_t f,
					void *data);

void debugfs_remove(struct dentry *dentry);
#define debugfs_remove_recursive debugfs_remove

const struct file_operations *debugfs_real_fops(const struct file *filp);

int debugfs_file_get(struct dentry *dentry);
void debugfs_file_put(struct dentry *dentry);

ssize_t debugfs_attr_read(struct file *file, char __user *buf,
			size_t len, loff_t *ppos);
ssize_t debugfs_attr_write(struct file *file, const char __user *buf,
			size_t len, loff_t *ppos);

struct dentry *debugfs_rename(struct dentry *old_dir, struct dentry *old_dentry,
                struct dentry *new_dir, const char *new_name);

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);
void debugfs_create_u32(const char *name, umode_t mode, struct dentry *parent,
			u32 *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);
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);
void debugfs_create_str(const char *name, umode_t mode,
			struct dentry *parent, char **value);

struct dentry *debugfs_create_blob(const char *name, umode_t mode,
				  struct dentry *parent,
				  struct debugfs_blob_wrapper *blob);

void debugfs_create_regset32(const char *name, umode_t mode,
			     struct dentry *parent,
			     struct debugfs_regset32 *regset);

void debugfs_print_regs32(struct seq_file *s, const struct debugfs_reg32 *regs,
			  int nregs, void __iomem *base, char *prefix);

void debugfs_create_u32_array(const char *name, umode_t mode,
			      struct dentry *parent,
			      struct debugfs_u32_array *array);

void debugfs_create_devm_seqfile(struct device *dev, const char *name,
				 struct dentry *parent,
				 int (*read_fn)(struct seq_file *s, void *data));

bool debugfs_initialized(void);

ssize_t debugfs_read_file_bool(struct file *file, char __user *user_buf,
			       size_t count, loff_t *ppos);

ssize_t debugfs_write_file_bool(struct file *file, const char __user *user_buf,
				size_t count, loff_t *ppos);

ssize_t debugfs_read_file_str(struct file *file, char __user *user_buf,
			      size_t count, loff_t *ppos);

#else

#include <linux/err.h>

/*
 * We do not return NULL from these functions if CONFIG_DEBUG_FS is not enabled
 * so users have a chance to detect if there was a real error or not.  We don't
 * want to duplicate the design decision mistakes of procfs and devfs again.
 */

static inline struct dentry *debugfs_lookup(const char *name,
					    struct dentry *parent)
{
	return ERR_PTR(-ENODEV);
}

static inline struct dentry *debugfs_create_file(const char *name, umode_t mode,
					struct dentry *parent, void *data,
					const struct file_operations *fops)
{
	return ERR_PTR(-ENODEV);
}

static inline struct dentry *debugfs_create_file_unsafe(const char *name,
					umode_t mode, struct dentry *parent,
					void *data,
					const struct file_operations *fops)
{
	return ERR_PTR(-ENODEV);
}

static inline void debugfs_create_file_size(const char *name, umode_t mode,
					    struct dentry *parent, void *data,
					    const struct file_operations *fops,
					    loff_t file_size)
{ }

static inline struct dentry *debugfs_create_dir(const char *name,
						struct dentry *parent)
{
	return ERR_PTR(-ENODEV);
}

static inline struct dentry *debugfs_create_symlink(const char *name,
						    struct dentry *parent,
						    const char *dest)
{
	return ERR_PTR(-ENODEV);
}

static inline struct dentry *debugfs_create_automount(const char *name,
					struct dentry *parent,
					debugfs_automount_t f,
					void *data)
{
	return ERR_PTR(-ENODEV);
}

static inline void debugfs_remove(struct dentry *dentry)
{ }

static inline void debugfs_remove_recursive(struct dentry *dentry)
{ }

const struct file_operations *debugfs_real_fops(const struct file *filp);

static inline int debugfs_file_get(struct dentry *dentry)
{
	return 0;
}

static inline void debugfs_file_put(struct dentry *dentry)
{ }

static inline ssize_t debugfs_attr_read(struct file *file, char __user *buf,
					size_t len, loff_t *ppos)
{
	return -ENODEV;
}

static inline ssize_t debugfs_attr_write(struct file *file,
					const char __user *buf,
					size_t len, loff_t *ppos)
{
	return -ENODEV;
}

static inline struct dentry *debugfs_rename(struct dentry *old_dir, struct dentry *old_dentry,
                struct dentry *new_dir, char *new_name)
{
	return ERR_PTR(-ENODEV);
}

static inline void debugfs_create_u8(const char *name, umode_t mode,
				     struct dentry *parent, u8 *value) { }

static inline void debugfs_create_u16(const char *name, umode_t mode,
				      struct dentry *parent, u16 *value) { }

static inline void debugfs_create_u32(const char *name, umode_t mode,
				      struct dentry *parent, u32 *value) { }

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,
						struct dentry *parent,
						unsigned long *value)
{
	return ERR_PTR(-ENODEV);
}

static inline void debugfs_create_x8(const char *name, umode_t mode,
				     struct dentry *parent, u8 *value) { }

static inline void debugfs_create_x16(const char *name, umode_t mode,
				      struct dentry *parent, u16 *value) { }

static inline void debugfs_create_x32(const char *name, umode_t mode,
				      struct dentry *parent, u32 *value) { }

static inline void debugfs_create_x64(const char *name, umode_t mode,
				      struct dentry *parent, u64 *value) { }

static inline void debugfs_create_size_t(const char *name, umode_t mode,
					 struct dentry *parent, size_t *value)
{ }

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,
						 bool *value)
{
	return ERR_PTR(-ENODEV);
}

static inline void debugfs_create_str(const char *name, umode_t mode,
				      struct dentry *parent,
				      char **value)
{ }

static inline struct dentry *debugfs_create_blob(const char *name, umode_t mode,
				  struct dentry *parent,
				  struct debugfs_blob_wrapper *blob)
{
	return ERR_PTR(-ENODEV);
}

static inline void debugfs_create_regset32(const char *name, umode_t mode,
					   struct dentry *parent,
					   struct debugfs_regset32 *regset)
{
}

static inline void debugfs_print_regs32(struct seq_file *s, const struct debugfs_reg32 *regs,
			 int nregs, void __iomem *base, char *prefix)
{
}

static inline bool debugfs_initialized(void)
{
	return false;
}

static inline void debugfs_create_u32_array(const char *name, umode_t mode,
					    struct dentry *parent,
					    struct debugfs_u32_array *array)
{
}

static inline void debugfs_create_devm_seqfile(struct device *dev,
					       const char *name,
					       struct dentry *parent,
					       int (*read_fn)(struct seq_file *s,
							      void *data))
{
}

static inline ssize_t debugfs_read_file_bool(struct file *file,
					     char __user *user_buf,
					     size_t count, loff_t *ppos)
{
	return -ENODEV;
}

static inline ssize_t debugfs_write_file_bool(struct file *file,
					      const char __user *user_buf,
					      size_t count, loff_t *ppos)
{
	return -ENODEV;
}

static inline ssize_t debugfs_read_file_str(struct file *file,
					    char __user *user_buf,
					    size_t count, loff_t *ppos)
{
	return -ENODEV;
}

#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
Commit	Line	Data
3bce94fd	1	// SPDX-License-Identifier: GPL-2.0
1da177e4 LT	2	/*
	3	* debugfs.h - a tiny little debug file system
	4	*
	5	* Copyright (C) 2004 Greg Kroah-Hartman <greg@kroah.com>
	6	* Copyright (C) 2004 IBM Inc.
	7	*
1da177e4	8	* debugfs is for people to use instead of /proc or /sys.
e1b4fc7a	9	* See Documentation/filesystems/ for more details.
1da177e4 LT	10	*/
	11
	12	#ifndef _DEBUGFS_H_
	13	#define _DEBUGFS_H_
	14
	15	#include <linux/fs.h>
1a087c6a	16	#include <linux/seq_file.h>
1da177e4	17
a7a76cef	18	#include <linux/types.h>
49d200de	19	#include <linux/compiler.h>
a7a76cef	20
f30d0a81	21	struct device;
a7a76cef RD	22	struct file_operations;
a7a76cef RD	23
dd308bc3 ME	24	struct debugfs_blob_wrapper {
	25	void *data;
	26	unsigned long size;
	27	};
	28
1a087c6a AR	29	struct debugfs_reg32 {
	30	char *name;
	31	unsigned long offset;
	32	};
	33
	34	struct debugfs_regset32 {
833d6e01	35	const struct debugfs_reg32 *regs;
1a087c6a AR	36	int nregs;
1a087c6a AR	37	void __iomem *base;
30332eee	38	struct device dev; / Optional device for Runtime PM */
1a087c6a AR	39	};
1a087c6a AR	40
a2b992c8 JK	41	struct debugfs_u32_array {
	42	u32 *array;
	43	u32 n_elements;
	44	};
	45
ae79cdaa	46	extern struct dentry *arch_debugfs_dir;
ae79cdaa	47
7f847dd3 AB	48	#define DEFINE_DEBUGFS_ATTRIBUTE(__fops, __get, __set, __fmt) \
	49	static int __fops ## _open(struct inode inode, struct file file) \
	50	{ \
	51	__simple_attr_check_format(__fmt, 0ull); \
	52	return simple_attr_open(inode, file, __get, __set, __fmt); \
	53	} \
	54	static const struct file_operations __fops = { \
	55	.owner = THIS_MODULE, \
	56	.open = __fops ## _open, \
	57	.release = simple_attr_release, \
	58	.read = debugfs_attr_read, \
	59	.write = debugfs_attr_write, \
895ce6c8	60	.llseek = no_llseek, \
7f847dd3 AB	61	}
7f847dd3 AB	62
4250b047 KK	63	typedef struct vfsmount (debugfs_automount_t)(struct dentry , void );
4250b047 KK	64
1da177e4	65	#if defined(CONFIG_DEBUG_FS)
3634634e	66
a7c5437b OS	67	struct dentry debugfs_lookup(const char name, struct dentry *parent);
a7c5437b OS	68
f4ae40a6	69	struct dentry debugfs_create_file(const char name, umode_t mode,
1da177e4	70	struct dentry parent, void data,
99ac48f5	71	const struct file_operations *fops);
c6468808 NS	72	struct dentry debugfs_create_file_unsafe(const char name, umode_t mode,
	73	struct dentry parent, void data,
	74	const struct file_operations *fops);
1da177e4	75
526ee72d GKH	76	void debugfs_create_file_size(const char *name, umode_t mode,
	77	struct dentry parent, void data,
	78	const struct file_operations *fops,
	79	loff_t file_size);
e59b4e91	80
1da177e4 LT	81	struct dentry debugfs_create_dir(const char name, struct dentry *parent);
1da177e4 LT	82
66f54963 PO	83	struct dentry debugfs_create_symlink(const char name, struct dentry *parent,
	84	const char *dest);
	85
77b3da6e AV	86	struct dentry debugfs_create_automount(const char name,
77b3da6e AV	87	struct dentry *parent,
93faccbb	88	debugfs_automount_t f,
77b3da6e AV	89	void *data);
77b3da6e AV	90
1da177e4	91	void debugfs_remove(struct dentry *dentry);
a3d1e7eb	92	#define debugfs_remove_recursive debugfs_remove
1da177e4	93
055ab8e3	94	const struct file_operations debugfs_real_fops(const struct file filp);
7c8d4698	95
e9117a5a NS	96	int debugfs_file_get(struct dentry *dentry);
	97	void debugfs_file_put(struct dentry *dentry);
	98
c6468808 NS	99	ssize_t debugfs_attr_read(struct file file, char __user buf,
	100	size_t len, loff_t *ppos);
	101	ssize_t debugfs_attr_write(struct file file, const char __user buf,
	102	size_t len, loff_t *ppos);
	103
cfc94cdf JK	104	struct dentry debugfs_rename(struct dentry old_dir, struct dentry *old_dentry,
	105	struct dentry new_dir, const char new_name);
	106
9655ac4a GKH	107	void debugfs_create_u8(const char name, umode_t mode, struct dentry parent,
9655ac4a GKH	108	u8 *value);
313f5dbb GKH	109	void debugfs_create_u16(const char name, umode_t mode, struct dentry parent,
313f5dbb GKH	110	u16 *value);
2b07021a GKH	111	void debugfs_create_u32(const char name, umode_t mode, struct dentry parent,
2b07021a GKH	112	u32 *value);
ad26221f GKH	113	void debugfs_create_u64(const char name, umode_t mode, struct dentry parent,
ad26221f GKH	114	u64 *value);
c23fe831 VK	115	struct dentry debugfs_create_ulong(const char name, umode_t mode,
c23fe831 VK	116	struct dentry parent, unsigned long value);
c7c11689 GKH	117	void debugfs_create_x8(const char name, umode_t mode, struct dentry parent,
c7c11689 GKH	118	u8 *value);
e40d38f2 GKH	119	void debugfs_create_x16(const char name, umode_t mode, struct dentry parent,
e40d38f2 GKH	120	u16 *value);
f5cb0a7e GKH	121	void debugfs_create_x32(const char name, umode_t mode, struct dentry parent,
f5cb0a7e GKH	122	u32 *value);
0864c408 GKH	123	void debugfs_create_x64(const char name, umode_t mode, struct dentry parent,
0864c408 GKH	124	u64 *value);
8e580263 GKH	125	void debugfs_create_size_t(const char *name, umode_t mode,
8e580263 GKH	126	struct dentry parent, size_t value);
9927c6fa GKH	127	void debugfs_create_atomic_t(const char *name, umode_t mode,
9927c6fa GKH	128	struct dentry parent, atomic_t value);
f4ae40a6	129	struct dentry debugfs_create_bool(const char name, umode_t mode,
621a5f7a	130	struct dentry parent, bool value);
9af0440e PZ	131	void debugfs_create_str(const char *name, umode_t mode,
9af0440e PZ	132	struct dentry parent, char *value);
1da177e4	133
f4ae40a6	134	struct dentry debugfs_create_blob(const char name, umode_t mode,
dd308bc3 ME	135	struct dentry *parent,
dd308bc3 ME	136	struct debugfs_blob_wrapper *blob);
c0f92ba9	137
ae91c925 GKH	138	void debugfs_create_regset32(const char *name, umode_t mode,
	139	struct dentry *parent,
	140	struct debugfs_regset32 *regset);
1a087c6a	141
9761536e JP	142	void debugfs_print_regs32(struct seq_file s, const struct debugfs_reg32 regs,
9761536e JP	143	int nregs, void __iomem base, char prefix);
1a087c6a	144
c9c2c27d	145	void debugfs_create_u32_array(const char *name, umode_t mode,
a2b992c8 JK	146	struct dentry *parent,
a2b992c8 JK	147	struct debugfs_u32_array *array);
9fe2a701	148
0d519cbf GKH	149	void debugfs_create_devm_seqfile(struct device dev, const char name,
	150	struct dentry *parent,
	151	int (read_fn)(struct seq_file s, void *data));
98210b7f	152
c0f92ba9 FW	153	bool debugfs_initialized(void);
c0f92ba9 FW	154
0642ef6f RF	155	ssize_t debugfs_read_file_bool(struct file file, char __user user_buf,
	156	size_t count, loff_t *ppos);
	157
	158	ssize_t debugfs_write_file_bool(struct file file, const char __user user_buf,
	159	size_t count, loff_t *ppos);
	160
9af0440e PZ	161	ssize_t debugfs_read_file_str(struct file file, char __user user_buf,
	162	size_t count, loff_t *ppos);
	163
1da177e4	164	#else
a7a76cef RD	165
	166	#include <linux/err.h>
	167
98210b7f	168	/*
1da177e4 LT	169	* We do not return NULL from these functions if CONFIG_DEBUG_FS is not enabled
	170	* so users have a chance to detect if there was a real error or not. We don't
	171	* want to duplicate the design decision mistakes of procfs and devfs again.
	172	*/
	173
a7c5437b OS	174	static inline struct dentry debugfs_lookup(const char name,
	175	struct dentry *parent)
	176	{
	177	return ERR_PTR(-ENODEV);
	178	}
	179
f4ae40a6	180	static inline struct dentry debugfs_create_file(const char name, umode_t mode,
bde11d79 JD	181	struct dentry parent, void data,
bde11d79 JD	182	const struct file_operations *fops)
1da177e4 LT	183	{
	184	return ERR_PTR(-ENODEV);
	185	}
	186
c2a737eb VK	187	static inline struct dentry debugfs_create_file_unsafe(const char name,
	188	umode_t mode, struct dentry *parent,
	189	void *data,
	190	const struct file_operations *fops)
	191	{
	192	return ERR_PTR(-ENODEV);
	193	}
	194
526ee72d GKH	195	static inline void debugfs_create_file_size(const char *name, umode_t mode,
	196	struct dentry parent, void data,
	197	const struct file_operations *fops,
	198	loff_t file_size)
	199	{ }
e59b4e91	200
1da177e4 LT	201	static inline struct dentry debugfs_create_dir(const char name,
	202	struct dentry *parent)
	203	{
	204	return ERR_PTR(-ENODEV);
	205	}
	206
66f54963 PO	207	static inline struct dentry debugfs_create_symlink(const char name,
	208	struct dentry *parent,
	209	const char *dest)
	210	{
	211	return ERR_PTR(-ENODEV);
	212	}
	213
94e1dec7 JW	214	static inline struct dentry debugfs_create_automount(const char name,
94e1dec7 JW	215	struct dentry *parent,
4250b047	216	debugfs_automount_t f,
94e1dec7 JW	217	void *data)
	218	{
	219	return ERR_PTR(-ENODEV);
	220	}
	221
1da177e4 LT	222	static inline void debugfs_remove(struct dentry *dentry)
	223	{ }
	224
9505e637 HS	225	static inline void debugfs_remove_recursive(struct dentry *dentry)
	226	{ }
	227
f50caa9b AB	228	const struct file_operations debugfs_real_fops(const struct file filp);
f50caa9b AB	229
e9117a5a NS	230	static inline int debugfs_file_get(struct dentry *dentry)
	231	{
	232	return 0;
	233	}
	234
	235	static inline void debugfs_file_put(struct dentry *dentry)
	236	{ }
	237
7f847dd3 AB	238	static inline ssize_t debugfs_attr_read(struct file file, char __user buf,
	239	size_t len, loff_t *ppos)
	240	{
	241	return -ENODEV;
	242	}
	243
	244	static inline ssize_t debugfs_attr_write(struct file *file,
	245	const char __user *buf,
	246	size_t len, loff_t *ppos)
	247	{
	248	return -ENODEV;
	249	}
c6468808	250
cfc94cdf JK	251	static inline struct dentry debugfs_rename(struct dentry old_dir, struct dentry *old_dentry,
	252	struct dentry new_dir, char new_name)
	253	{
	254	return ERR_PTR(-ENODEV);
	255	}
	256
9655ac4a GKH	257	static inline void debugfs_create_u8(const char *name, umode_t mode,
9655ac4a GKH	258	struct dentry parent, u8 value) { }
1da177e4	259
313f5dbb GKH	260	static inline void debugfs_create_u16(const char *name, umode_t mode,
313f5dbb GKH	261	struct dentry parent, u16 value) { }
1da177e4	262
2b07021a GKH	263	static inline void debugfs_create_u32(const char *name, umode_t mode,
2b07021a GKH	264	struct dentry parent, u32 value) { }
1da177e4	265
ad26221f GKH	266	static inline void debugfs_create_u64(const char *name, umode_t mode,
ad26221f GKH	267	struct dentry parent, u64 value) { }
8447891f	268
c2a737eb VK	269	static inline struct dentry debugfs_create_ulong(const char name,
	270	umode_t mode,
	271	struct dentry *parent,
	272	unsigned long *value)
	273	{
	274	return ERR_PTR(-ENODEV);
	275	}
	276
c7c11689 GKH	277	static inline void debugfs_create_x8(const char *name, umode_t mode,
c7c11689 GKH	278	struct dentry parent, u8 value) { }
2ebefc50	279
e40d38f2 GKH	280	static inline void debugfs_create_x16(const char *name, umode_t mode,
e40d38f2 GKH	281	struct dentry parent, u16 value) { }
2ebefc50	282
f5cb0a7e GKH	283	static inline void debugfs_create_x32(const char *name, umode_t mode,
f5cb0a7e GKH	284	struct dentry parent, u32 value) { }
2ebefc50	285
0864c408 GKH	286	static inline void debugfs_create_x64(const char *name, umode_t mode,
0864c408 GKH	287	struct dentry parent, u64 value) { }
3159269e	288
8e580263 GKH	289	static inline void debugfs_create_size_t(const char *name, umode_t mode,
	290	struct dentry parent, size_t value)
	291	{ }
8adb711f	292
9927c6fa GKH	293	static inline void debugfs_create_atomic_t(const char *name, umode_t mode,
	294	struct dentry *parent,
	295	atomic_t *value)
	296	{ }
5b880214	297
f4ae40a6	298	static inline struct dentry debugfs_create_bool(const char name, umode_t mode,
1da177e4	299	struct dentry *parent,
621a5f7a	300	bool *value)
1da177e4 LT	301	{
	302	return ERR_PTR(-ENODEV);
	303	}
	304
9af0440e PZ	305	static inline void debugfs_create_str(const char *name, umode_t mode,
	306	struct dentry *parent,
	307	char **value)
	308	{ }
	309
f4ae40a6	310	static inline struct dentry debugfs_create_blob(const char name, umode_t mode,
dd308bc3 ME	311	struct dentry *parent,
	312	struct debugfs_blob_wrapper *blob)
	313	{
	314	return ERR_PTR(-ENODEV);
	315	}
	316
ae91c925 GKH	317	static inline void debugfs_create_regset32(const char *name, umode_t mode,
	318	struct dentry *parent,
	319	struct debugfs_regset32 *regset)
1a087c6a	320	{
1a087c6a AR	321	}
1a087c6a AR	322
9761536e	323	static inline void debugfs_print_regs32(struct seq_file s, const struct debugfs_reg32 regs,
5b880214 WY	324	int nregs, void __iomem base, char prefix)
5b880214 WY	325	{
5b880214 WY	326	}
5b880214 WY	327
c0f92ba9 FW	328	static inline bool debugfs_initialized(void)
	329	{
	330	return false;
	331	}
	332
c9c2c27d	333	static inline void debugfs_create_u32_array(const char *name, umode_t mode,
a2b992c8 JK	334	struct dentry *parent,
a2b992c8 JK	335	struct debugfs_u32_array *array)
9fe2a701	336	{
9fe2a701 SV	337	}
9fe2a701 SV	338
0d519cbf GKH	339	static inline void debugfs_create_devm_seqfile(struct device *dev,
	340	const char *name,
	341	struct dentry *parent,
	342	int (read_fn)(struct seq_file s,
	343	void *data))
98210b7f	344	{
98210b7f AS	345	}
98210b7f AS	346
0642ef6f RF	347	static inline ssize_t debugfs_read_file_bool(struct file *file,
	348	char __user *user_buf,
	349	size_t count, loff_t *ppos)
	350	{
	351	return -ENODEV;
	352	}
	353
	354	static inline ssize_t debugfs_write_file_bool(struct file *file,
	355	const char __user *user_buf,
	356	size_t count, loff_t *ppos)
	357	{
	358	return -ENODEV;
	359	}
	360
9af0440e PZ	361	static inline ssize_t debugfs_read_file_str(struct file *file,
	362	char __user *user_buf,
	363	size_t count, loff_t *ppos)
	364	{
	365	return -ENODEV;
	366	}
	367
1da177e4 LT	368	#endif
1da177e4 LT	369
d3504757 GU	370	/**
	371	* debugfs_create_xul - create a debugfs file that is used to read and write an
	372	* unsigned long value, formatted in hexadecimal
	373	* @name: a pointer to a string containing the name of the file to create.
	374	* @mode: the permission that the file should have
	375	* @parent: a pointer to the parent dentry for this file. This should be a
	376	* directory dentry if set. If this parameter is %NULL, then the
	377	* file will be created in the root of the debugfs filesystem.
	378	* @value: a pointer to the variable that the file should read to and write
	379	* from.
	380	*/
	381	static inline void debugfs_create_xul(const char *name, umode_t mode,
	382	struct dentry *parent,
	383	unsigned long *value)
	384	{
	385	if (sizeof(*value) == sizeof(u32))
	386	debugfs_create_x32(name, mode, parent, (u32 *)value);
	387	else
	388	debugfs_create_x64(name, mode, parent, (u64 *)value);
	389	}
	390
1da177e4	391	#endif