fs/f2fs/trace.h

   1 /*
   2  * f2fs IO tracer
   3  *
   4  * Copyright (c) 2014 Motorola Mobility
   5  * Copyright (c) 2014 Jaegeuk Kim <jaegeuk@kernel.org>
   6  *
   7  * This program is free software; you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License version 2 as
   9  * published by the Free Software Foundation.
  10  */
  11 #ifndef __F2FS_TRACE_H__
  12 #define __F2FS_TRACE_H__
  13
  14 #ifdef CONFIG_F2FS_IO_TRACE
  15 #include <trace/events/f2fs.h>
  16
  17 enum file_type {
  18         __NORMAL_FILE,
  19         __DIR_FILE,
  20         __NODE_FILE,
  21         __META_FILE,
  22         __ATOMIC_FILE,
  23         __VOLATILE_FILE,
  24         __MISC_FILE,
  25 };
  26
  27 struct last_io_info {
  28         int major, minor;
  29         pid_t pid;
  30         enum file_type type;
  31         struct f2fs_io_info fio;
  32         block_t len;
  33 };
  34
  35 extern void f2fs_trace_pid(struct page *);
  36 extern void f2fs_trace_ios(struct f2fs_io_info *, int);
  37 extern void f2fs_build_trace_ios(void);
  38 extern void f2fs_destroy_trace_ios(void);
  39 #else
  40 #define f2fs_trace_pid(p)
  41 #define f2fs_trace_ios(i, n)
  42 #define f2fs_build_trace_ios()
  43 #define f2fs_destroy_trace_ios()
  44
  45 #endif
  46 #endif /* __F2FS_TRACE_H__ */