--- zzzz-none-000/linux-4.4.271/include/linux/debugfs.h	2021-06-03 06:22:09.000000000 +0000
+++ hawkeye-5590-750/linux-4.4.271/include/linux/debugfs.h	2023-04-19 10:22:30.000000000 +0000
@@ -37,6 +37,11 @@
 	const struct debugfs_reg32 *regs;
 	int nregs;
 	void __iomem *base;
+#if defined(CONFIG_AVM_ENHANCED)
+	uint32_t (*reg_read_fn)(void *, uint32_t);
+	uint32_t (*reg_write_fn)(void *, uint32_t, uint32_t);
+	void *rw_context;
+#endif
 };
 
 extern struct dentry *arch_debugfs_dir;
@@ -45,6 +50,8 @@
 
 /* declared over in file.c */
 extern const struct file_operations debugfs_file_operations;
+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,
@@ -124,6 +131,21 @@
 ssize_t debugfs_write_file_bool(struct file *file, const char __user *user_buf,
 				size_t count, loff_t *ppos);
 
+#if defined(CONFIG_AVM_ENHANCED)
+
+#define SD_MAX_INPUT_BUF 8192 
+
+int add_simple_debugfs_file( const char* fname, struct dentry *parent,
+			     int (*kernel_input)(char *, void *),
+			     void (*kernel_output)(struct seq_file *, void *),
+			     void *priv_data);
+
+void remove_simple_debugfs_file( struct dentry *this );
+
+struct dentry *debugfs_create_atomic_t(const char *name, umode_t mode,
+				struct dentry *parent, atomic_t *value);
+
+#endif /* CONFIG_AVM_ENHANCED */
 #else
 
 #include <linux/err.h>
@@ -134,6 +156,12 @@
  * 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)
@@ -304,6 +332,26 @@
 	return -ENODEV;
 }
 
-#endif
+#if defined(CONFIG_AVM_ENHANCED)
 
-#endif
+static inline int add_simple_debugfs_file(
+		const char *fname __maybe_unused,
+		struct dentry *parent __maybe_unused,
+		int (*kernel_input) (char *, void *) __maybe_unused,
+		void (*kernel_output) (struct seq_file *, void *) __maybe_unused,
+		void *priv_data __maybe_unused)
+{
+	return 0;
+}
+
+static inline void remove_simple_debugfs_file(
+					struct dentry *this __maybe_unused)
+{
+	return;
+}
+
+#endif /* CONFIG_AVM_ENHANCED */
+
+#endif /* CONFIG_DEBUG_FS */
+
+#endif /* _DEBUGFS_H_ */