[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);

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);

#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 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;
}

#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);
1da177e4	131
f4ae40a6	132	struct dentry debugfs_create_blob(const char name, umode_t mode,
dd308bc3 ME	133	struct dentry *parent,
dd308bc3 ME	134	struct debugfs_blob_wrapper *blob);
c0f92ba9	135
ae91c925 GKH	136	void debugfs_create_regset32(const char *name, umode_t mode,
	137	struct dentry *parent,
	138	struct debugfs_regset32 *regset);
1a087c6a	139
9761536e JP	140	void debugfs_print_regs32(struct seq_file s, const struct debugfs_reg32 regs,
9761536e JP	141	int nregs, void __iomem base, char prefix);
1a087c6a	142
c9c2c27d	143	void debugfs_create_u32_array(const char *name, umode_t mode,
a2b992c8 JK	144	struct dentry *parent,
a2b992c8 JK	145	struct debugfs_u32_array *array);
9fe2a701	146
0d519cbf GKH	147	void debugfs_create_devm_seqfile(struct device dev, const char name,
	148	struct dentry *parent,
	149	int (read_fn)(struct seq_file s, void *data));
98210b7f	150
c0f92ba9 FW	151	bool debugfs_initialized(void);
c0f92ba9 FW	152
0642ef6f RF	153	ssize_t debugfs_read_file_bool(struct file file, char __user user_buf,
	154	size_t count, loff_t *ppos);
	155
	156	ssize_t debugfs_write_file_bool(struct file file, const char __user user_buf,
	157	size_t count, loff_t *ppos);
	158
1da177e4	159	#else
a7a76cef RD	160
	161	#include <linux/err.h>
	162
98210b7f	163	/*
1da177e4 LT	164	* We do not return NULL from these functions if CONFIG_DEBUG_FS is not enabled
	165	* so users have a chance to detect if there was a real error or not. We don't
	166	* want to duplicate the design decision mistakes of procfs and devfs again.
	167	*/
	168
a7c5437b OS	169	static inline struct dentry debugfs_lookup(const char name,
	170	struct dentry *parent)
	171	{
	172	return ERR_PTR(-ENODEV);
	173	}
	174
f4ae40a6	175	static inline struct dentry debugfs_create_file(const char name, umode_t mode,
bde11d79 JD	176	struct dentry parent, void data,
bde11d79 JD	177	const struct file_operations *fops)
1da177e4 LT	178	{
	179	return ERR_PTR(-ENODEV);
	180	}
	181
c2a737eb VK	182	static inline struct dentry debugfs_create_file_unsafe(const char name,
	183	umode_t mode, struct dentry *parent,
	184	void *data,
	185	const struct file_operations *fops)
	186	{
	187	return ERR_PTR(-ENODEV);
	188	}
	189
526ee72d GKH	190	static inline void debugfs_create_file_size(const char *name, umode_t mode,
	191	struct dentry parent, void data,
	192	const struct file_operations *fops,
	193	loff_t file_size)
	194	{ }
e59b4e91	195
1da177e4 LT	196	static inline struct dentry debugfs_create_dir(const char name,
	197	struct dentry *parent)
	198	{
	199	return ERR_PTR(-ENODEV);
	200	}
	201
66f54963 PO	202	static inline struct dentry debugfs_create_symlink(const char name,
	203	struct dentry *parent,
	204	const char *dest)
	205	{
	206	return ERR_PTR(-ENODEV);
	207	}
	208
94e1dec7 JW	209	static inline struct dentry debugfs_create_automount(const char name,
94e1dec7 JW	210	struct dentry *parent,
4250b047	211	debugfs_automount_t f,
94e1dec7 JW	212	void *data)
	213	{
	214	return ERR_PTR(-ENODEV);
	215	}
	216
1da177e4 LT	217	static inline void debugfs_remove(struct dentry *dentry)
	218	{ }
	219
9505e637 HS	220	static inline void debugfs_remove_recursive(struct dentry *dentry)
	221	{ }
	222
f50caa9b AB	223	const struct file_operations debugfs_real_fops(const struct file filp);
f50caa9b AB	224
e9117a5a NS	225	static inline int debugfs_file_get(struct dentry *dentry)
	226	{
	227	return 0;
	228	}
	229
	230	static inline void debugfs_file_put(struct dentry *dentry)
	231	{ }
	232
7f847dd3 AB	233	static inline ssize_t debugfs_attr_read(struct file file, char __user buf,
	234	size_t len, loff_t *ppos)
	235	{
	236	return -ENODEV;
	237	}
	238
	239	static inline ssize_t debugfs_attr_write(struct file *file,
	240	const char __user *buf,
	241	size_t len, loff_t *ppos)
	242	{
	243	return -ENODEV;
	244	}
c6468808	245
cfc94cdf JK	246	static inline struct dentry debugfs_rename(struct dentry old_dir, struct dentry *old_dentry,
	247	struct dentry new_dir, char new_name)
	248	{
	249	return ERR_PTR(-ENODEV);
	250	}
	251
9655ac4a GKH	252	static inline void debugfs_create_u8(const char *name, umode_t mode,
9655ac4a GKH	253	struct dentry parent, u8 value) { }
1da177e4	254
313f5dbb GKH	255	static inline void debugfs_create_u16(const char *name, umode_t mode,
313f5dbb GKH	256	struct dentry parent, u16 value) { }
1da177e4	257
2b07021a GKH	258	static inline void debugfs_create_u32(const char *name, umode_t mode,
2b07021a GKH	259	struct dentry parent, u32 value) { }
1da177e4	260
ad26221f GKH	261	static inline void debugfs_create_u64(const char *name, umode_t mode,
ad26221f GKH	262	struct dentry parent, u64 value) { }
8447891f	263
c2a737eb VK	264	static inline struct dentry debugfs_create_ulong(const char name,
	265	umode_t mode,
	266	struct dentry *parent,
	267	unsigned long *value)
	268	{
	269	return ERR_PTR(-ENODEV);
	270	}
	271
c7c11689 GKH	272	static inline void debugfs_create_x8(const char *name, umode_t mode,
c7c11689 GKH	273	struct dentry parent, u8 value) { }
2ebefc50	274
e40d38f2 GKH	275	static inline void debugfs_create_x16(const char *name, umode_t mode,
e40d38f2 GKH	276	struct dentry parent, u16 value) { }
2ebefc50	277
f5cb0a7e GKH	278	static inline void debugfs_create_x32(const char *name, umode_t mode,
f5cb0a7e GKH	279	struct dentry parent, u32 value) { }
2ebefc50	280
0864c408 GKH	281	static inline void debugfs_create_x64(const char *name, umode_t mode,
0864c408 GKH	282	struct dentry parent, u64 value) { }
3159269e	283
8e580263 GKH	284	static inline void debugfs_create_size_t(const char *name, umode_t mode,
	285	struct dentry parent, size_t value)
	286	{ }
8adb711f	287
9927c6fa GKH	288	static inline void debugfs_create_atomic_t(const char *name, umode_t mode,
	289	struct dentry *parent,
	290	atomic_t *value)
	291	{ }
5b880214	292
f4ae40a6	293	static inline struct dentry debugfs_create_bool(const char name, umode_t mode,
1da177e4	294	struct dentry *parent,
621a5f7a	295	bool *value)
1da177e4 LT	296	{
	297	return ERR_PTR(-ENODEV);
	298	}
	299
f4ae40a6	300	static inline struct dentry debugfs_create_blob(const char name, umode_t mode,
dd308bc3 ME	301	struct dentry *parent,
	302	struct debugfs_blob_wrapper *blob)
	303	{
	304	return ERR_PTR(-ENODEV);
	305	}
	306
ae91c925 GKH	307	static inline void debugfs_create_regset32(const char *name, umode_t mode,
	308	struct dentry *parent,
	309	struct debugfs_regset32 *regset)
1a087c6a	310	{
1a087c6a AR	311	}
1a087c6a AR	312
9761536e	313	static inline void debugfs_print_regs32(struct seq_file s, const struct debugfs_reg32 regs,
5b880214 WY	314	int nregs, void __iomem base, char prefix)
5b880214 WY	315	{
5b880214 WY	316	}
5b880214 WY	317
c0f92ba9 FW	318	static inline bool debugfs_initialized(void)
	319	{
	320	return false;
	321	}
	322
c9c2c27d	323	static inline void debugfs_create_u32_array(const char *name, umode_t mode,
a2b992c8 JK	324	struct dentry *parent,
a2b992c8 JK	325	struct debugfs_u32_array *array)
9fe2a701	326	{
9fe2a701 SV	327	}
9fe2a701 SV	328
0d519cbf GKH	329	static inline void debugfs_create_devm_seqfile(struct device *dev,
	330	const char *name,
	331	struct dentry *parent,
	332	int (read_fn)(struct seq_file s,
	333	void *data))
98210b7f	334	{
98210b7f AS	335	}
98210b7f AS	336
0642ef6f RF	337	static inline ssize_t debugfs_read_file_bool(struct file *file,
	338	char __user *user_buf,
	339	size_t count, loff_t *ppos)
	340	{
	341	return -ENODEV;
	342	}
	343
	344	static inline ssize_t debugfs_write_file_bool(struct file *file,
	345	const char __user *user_buf,
	346	size_t count, loff_t *ppos)
	347	{
	348	return -ENODEV;
	349	}
	350
1da177e4 LT	351	#endif
1da177e4 LT	352
d3504757 GU	353	/**
	354	* debugfs_create_xul - create a debugfs file that is used to read and write an
	355	* unsigned long value, formatted in hexadecimal
	356	* @name: a pointer to a string containing the name of the file to create.
	357	* @mode: the permission that the file should have
	358	* @parent: a pointer to the parent dentry for this file. This should be a
	359	* directory dentry if set. If this parameter is %NULL, then the
	360	* file will be created in the root of the debugfs filesystem.
	361	* @value: a pointer to the variable that the file should read to and write
	362	* from.
	363	*/
	364	static inline void debugfs_create_xul(const char *name, umode_t mode,
	365	struct dentry *parent,
	366	unsigned long *value)
	367	{
	368	if (sizeof(*value) == sizeof(u32))
	369	debugfs_create_x32(name, mode, parent, (u32 *)value);
	370	else
	371	debugfs_create_x64(name, mode, parent, (u64 *)value);
	372	}
	373
1da177e4	374	#endif