/*
   * f2fs IO tracer
   *
   * Copyright (c) 2014 Motorola Mobility
   * Copyright (c) 2014 Jaegeuk Kim <jaegeuk@kernel.org>
   *
   * This program is free software; you can redistribute it and/or modify
   * it under the terms of the GNU General Public License version 2 as
   * published by the Free Software Foundation.
   */
  #ifndef __F2FS_TRACE_H__
  #define __F2FS_TRACE_H__
  
  #ifdef CONFIG_F2FS_IO_TRACE
  #include <trace/events/f2fs.h>

  enum file_type {
  	__NORMAL_FILE,
  	__DIR_FILE,
  	__NODE_FILE,
  	__META_FILE,
  	__ATOMIC_FILE,
  	__VOLATILE_FILE,
  	__MISC_FILE,
  };
  
  struct last_io_info {
  	int major, minor;
  	pid_t pid;
  	enum file_type type;
  	struct f2fs_io_info fio;
  	block_t len;
  };

  extern void f2fs_trace_pid(struct page *);

  extern void f2fs_trace_ios(struct f2fs_io_info *, int);

  extern void f2fs_build_trace_ios(void);

  extern void f2fs_destroy_trace_ios(void);

  #else
  #define f2fs_trace_pid(p)

  #define f2fs_trace_ios(i, n)

  #define f2fs_build_trace_ios()

  #define f2fs_destroy_trace_ios()

  
  #endif
  #endif /* __F2FS_TRACE_H__ */