diff options
Diffstat (limited to 'kernel/include/linux/debugfs.h')
| -rw-r--r-- | kernel/include/linux/debugfs.h | 288 |
1 files changed, 288 insertions, 0 deletions
diff --git a/kernel/include/linux/debugfs.h b/kernel/include/linux/debugfs.h new file mode 100644 index 000000000..cb25af461 --- /dev/null +++ b/kernel/include/linux/debugfs.h @@ -0,0 +1,288 @@ +/* + * debugfs.h - a tiny little debug file system + * + * Copyright (C) 2004 Greg Kroah-Hartman <greg@kroah.com> + * Copyright (C) 2004 IBM Inc. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License version + * 2 as published by the Free Software Foundation. + * + * debugfs is for people to use instead of /proc or /sys. + * See Documentation/DocBook/filesystems for more details. + */ + +#ifndef _DEBUGFS_H_ +#define _DEBUGFS_H_ + +#include <linux/fs.h> +#include <linux/seq_file.h> + +#include <linux/types.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; +}; + +extern struct dentry *arch_debugfs_dir; + +#if defined(CONFIG_DEBUG_FS) + +/* declared over in file.c */ +extern const struct file_operations debugfs_file_operations; +extern const struct inode_operations debugfs_link_operations; + +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_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, + struct vfsmount *(*f)(void *), + void *data); + +void debugfs_remove(struct dentry *dentry); +void debugfs_remove_recursive(struct dentry *dentry); + +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); +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); +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); +struct dentry *debugfs_create_bool(const char *name, umode_t mode, + struct dentry *parent, u32 *value); + +struct dentry *debugfs_create_blob(const char *name, umode_t mode, + struct dentry *parent, + struct debugfs_blob_wrapper *blob); + +struct dentry *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); + +struct dentry *debugfs_create_u32_array(const char *name, umode_t mode, + struct dentry *parent, + u32 *array, u32 elements); + +struct dentry *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); + +#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_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_size(const char *name, umode_t mode, + struct dentry *parent, void *data, + const struct file_operations *fops, + loff_t file_size) +{ + return ERR_PTR(-ENODEV); +} + +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 void debugfs_remove(struct dentry *dentry) +{ } + +static inline void debugfs_remove_recursive(struct dentry *dentry) +{ } + +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 struct dentry *debugfs_create_u8(const char *name, umode_t mode, + struct dentry *parent, + u8 *value) +{ + return ERR_PTR(-ENODEV); +} + +static inline struct dentry *debugfs_create_u16(const char *name, umode_t mode, + struct dentry *parent, + u16 *value) +{ + return ERR_PTR(-ENODEV); +} + +static inline struct dentry *debugfs_create_u32(const char *name, umode_t mode, + struct dentry *parent, + u32 *value) +{ + 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 struct dentry *debugfs_create_x8(const char *name, umode_t mode, + struct dentry *parent, + u8 *value) +{ + return ERR_PTR(-ENODEV); +} + +static inline struct dentry *debugfs_create_x16(const char *name, umode_t mode, + struct dentry *parent, + u16 *value) +{ + return ERR_PTR(-ENODEV); +} + +static inline struct dentry *debugfs_create_x32(const char *name, umode_t mode, + struct dentry *parent, + u32 *value) +{ + return ERR_PTR(-ENODEV); +} + +static inline struct dentry *debugfs_create_x64(const char *name, umode_t mode, + struct dentry *parent, + u64 *value) +{ + return ERR_PTR(-ENODEV); +} + +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 struct dentry *debugfs_create_atomic_t(const char *name, umode_t mode, + struct dentry *parent, atomic_t *value) +{ + return ERR_PTR(-ENODEV); +} + +static inline struct dentry *debugfs_create_bool(const char *name, umode_t mode, + struct dentry *parent, + u32 *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 struct dentry *debugfs_create_regset32(const char *name, + umode_t mode, struct dentry *parent, + struct debugfs_regset32 *regset) +{ + return ERR_PTR(-ENODEV); +} + +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 struct dentry *debugfs_create_u32_array(const char *name, umode_t mode, + struct dentry *parent, + u32 *array, u32 elements) +{ + return ERR_PTR(-ENODEV); +} + +static inline struct dentry *debugfs_create_devm_seqfile(struct device *dev, + const char *name, + struct dentry *parent, + int (*read_fn)(struct seq_file *s, + void *data)) +{ + return ERR_PTR(-ENODEV); +} + +#endif + +#endif |