LXR linux/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
  17enum 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
  27struct 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
  35extern void f2fs_trace_pid(struct page *);
  36extern void f2fs_trace_ios(struct f2fs_io_info *, int);
  37extern void f2fs_build_trace_ios(void);
  38extern 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__ */
  47