include/linux/tracefs.h

   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