LXR linux/fs/f2fs/trace.h

   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
  14enum 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
  24struct 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
  32extern void f2fs_trace_pid(struct page *);
  33extern void f2fs_trace_ios(struct f2fs_io_info *, int);
  34extern void f2fs_build_trace_ios(void);
  35extern 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__ */
  44