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