1 /* SPDX-License-Identifier: GPL-2.0-only */
2 /*
3  *  tracefs.h - a pseudo file system for activating tracing
4  *
5  * Based on debugfs by: 2004 Greg Kroah-Hartman <greg@kroah.com>
6  *
7  *  Copyright (C) 2014 Red Hat Inc, author: Steven Rostedt <srostedt@redhat.com>
8  *
9  * tracefs is the file system that is used by the tracing infrastructure.
10  */
11 
12 #ifndef _TRACEFS_H_
13 #define _TRACEFS_H_
14 
15 #include <linux/fs.h>
16 #include <linux/seq_file.h>
17 
18 #include <linux/types.h>
19 
20 struct file_operations;
21 
22 #ifdef CONFIG_TRACING
23 
24 struct dentry *tracefs_create_file(const char *name, umode_t mode,
25 				   struct dentry *parent, void *data,
26 				   const struct file_operations *fops);
27 
28 struct dentry *tracefs_create_dir(const char *name, struct dentry *parent);
29 
30 void tracefs_remove(struct dentry *dentry);
31 
32 struct dentry *tracefs_create_instance_dir(const char *name, struct dentry *parent,
33 					   int (*mkdir)(const char *name),
34 					   int (*rmdir)(const char *name));
35 
36 bool tracefs_initialized(void);
37 
38 #endif /* CONFIG_TRACING */
39 
40 #endif
41