root/fs/f2fs/trace.h

INCLUDED FROM

   1 // SPDX-License-Identifier: GPL-2.0
   2 /*
   3  * f2fs IO tracer
   4  *
   5  * Copyright (c) 2014 Motorola Mobility
   6  * Copyright (c) 2014 Jaegeuk Kim <jaegeuk@kernel.org>
   7  */
   8 #ifndef __F2FS_TRACE_H__
   9 #define __F2FS_TRACE_H__
  10 
  11 #ifdef CONFIG_F2FS_IO_TRACE
  12 #include <trace/events/f2fs.h>
  13 
  14 enum file_type {
  15         __NORMAL_FILE,
  16         __DIR_FILE,
  17         __NODE_FILE,
  18         __META_FILE,
  19         __ATOMIC_FILE,
  20         __VOLATILE_FILE,
  21         __MISC_FILE,
  22 };
  23 
  24 struct last_io_info {
  25         int major, minor;
  26         pid_t pid;
  27         enum file_type type;
  28         struct f2fs_io_info fio;
  29         block_t len;
  30 };
  31 
  32 extern void f2fs_trace_pid(struct page *);
  33 extern void f2fs_trace_ios(struct f2fs_io_info *, int);
  34 extern void f2fs_build_trace_ios(void);
  35 extern void f2fs_destroy_trace_ios(void);
  36 #else
  37 #define f2fs_trace_pid(p)
  38 #define f2fs_trace_ios(i, n)
  39 #define f2fs_build_trace_ios()
  40 #define f2fs_destroy_trace_ios()
  41 
  42 #endif
  43 #endif /* __F2FS_TRACE_H__ */