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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
20struct file_operations;
21
22#ifdef CONFIG_TRACING
23
24struct eventfs_file;
25
26struct dentry *eventfs_create_events_dir(const char *name,
27 struct dentry *parent);
28
29struct eventfs_file *eventfs_add_subsystem_dir(const char *name,
30 struct dentry *parent);
31
32struct eventfs_file *eventfs_add_dir(const char *name,
33 struct eventfs_file *ef_parent);
34
35int eventfs_add_file(const char *name, umode_t mode,
36 struct eventfs_file *ef_parent, void *data,
37 const struct file_operations *fops);
38
39int eventfs_add_events_file(const char *name, umode_t mode,
40 struct dentry *parent, void *data,
41 const struct file_operations *fops);
42
43void eventfs_remove(struct eventfs_file *ef);
44
45void eventfs_remove_events_dir(struct dentry *dentry);
46
47struct dentry *tracefs_create_file(const char *name, umode_t mode,
48 struct dentry *parent, void *data,
49 const struct file_operations *fops);
50
51struct dentry *tracefs_create_dir(const char *name, struct dentry *parent);
52
53void tracefs_remove(struct dentry *dentry);
54
55struct dentry *tracefs_create_instance_dir(const char *name, struct dentry *parent,
56 int (*mkdir)(const char *name),
57 int (*rmdir)(const char *name));
58
59bool tracefs_initialized(void);
60
61#endif /* CONFIG_TRACING */
62
63#endif