Initial import

1 files changed, 288 insertions, 0 deletions

diff --git a/include/linux/debugfs.h b/include/linux/debugfs.h
new file mode 100644
index 000000000..cb25af461
--- /dev/null
+++ b/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