include/trace/events/writeback.h

   1 #undef TRACE_SYSTEM
   2 #define TRACE_SYSTEM writeback
   3
   4 #if !defined(_TRACE_WRITEBACK_H) || defined(TRACE_HEADER_MULTI_READ)
   5 #define _TRACE_WRITEBACK_H
   6
   7 #include <linux/backing-dev.h>
   8 #include <linux/writeback.h>
   9
  10 #define show_inode_state(state)                                 \
  11         __print_flags(state, "|",                               \
  12                 {I_DIRTY_SYNC,          "I_DIRTY_SYNC"},        \
  13                 {I_DIRTY_DATASYNC,      "I_DIRTY_DATASYNC"},    \
  14                 {I_DIRTY_PAGES,         "I_DIRTY_PAGES"},       \
  15                 {I_NEW,                 "I_NEW"},               \
  16                 {I_WILL_FREE,           "I_WILL_FREE"},         \
  17                 {I_FREEING,             "I_FREEING"},           \
  18                 {I_CLEAR,               "I_CLEAR"},             \
  19                 {I_SYNC,                "I_SYNC"},              \
  20                 {I_REFERENCED,          "I_REFERENCED"}         \
  21         )
  22
  23 #define WB_WORK_REASON                                                  \
  24                 {WB_REASON_BACKGROUND,          "background"},          \
  25                 {WB_REASON_TRY_TO_FREE_PAGES,   "try_to_free_pages"},   \
  26                 {WB_REASON_SYNC,                "sync"},                \
  27                 {WB_REASON_PERIODIC,            "periodic"},            \
  28                 {WB_REASON_LAPTOP_TIMER,        "laptop_timer"},        \
  29                 {WB_REASON_FREE_MORE_MEM,       "free_more_memory"},    \
  30                 {WB_REASON_FS_FREE_SPACE,       "fs_free_space"},       \
  31                 {WB_REASON_FORKER_THREAD,       "forker_thread"}
  32
  33 struct wb_writeback_work;
  34
  35 TRACE_EVENT(writeback_dirty_page,
  36
  37         TP_PROTO(struct page *page, struct address_space *mapping),
  38
  39         TP_ARGS(page, mapping),
  40
  41         TP_STRUCT__entry (
  42                 __array(char, name, 32)
  43                 __field(unsigned long, ino)
  44                 __field(pgoff_t, index)
  45         ),
  46
  47         TP_fast_assign(
  48                 strncpy(__entry->name,
  49                         mapping ? dev_name(mapping->backing_dev_info->dev) : "(unknown)", 32);
  50                 __entry->ino = mapping ? mapping->host->i_ino : 0;
  51                 __entry->index = page->index;
  52         ),
  53
  54         TP_printk("bdi %s: ino=%lu index=%lu",
  55                 __entry->name,
  56                 __entry->ino,
  57                 __entry->index
  58         )
  59 );
  60
  61 DECLARE_EVENT_CLASS(writeback_dirty_inode_template,
  62
  63         TP_PROTO(struct inode *inode, int flags),
  64
  65         TP_ARGS(inode, flags),
  66
  67         TP_STRUCT__entry (
  68                 __array(char, name, 32)
  69                 __field(unsigned long, ino)
  70                 __field(unsigned long, flags)
  71         ),
  72
  73         TP_fast_assign(
  74                 struct backing_dev_info *bdi = inode->i_mapping->backing_dev_info;
  75
  76                 /* may be called for files on pseudo FSes w/ unregistered bdi */
  77                 strncpy(__entry->name,
  78                         bdi->dev ? dev_name(bdi->dev) : "(unknown)", 32);
  79                 __entry->ino            = inode->i_ino;
  80                 __entry->flags          = flags;
  81         ),
  82
  83         TP_printk("bdi %s: ino=%lu flags=%s",
  84                 __entry->name,
  85                 __entry->ino,
  86                 show_inode_state(__entry->flags)
  87         )
  88 );
  89
  90 DEFINE_EVENT(writeback_dirty_inode_template, writeback_dirty_inode_start,
  91
  92         TP_PROTO(struct inode *inode, int flags),
  93
  94         TP_ARGS(inode, flags)
  95 );
  96
  97 DEFINE_EVENT(writeback_dirty_inode_template, writeback_dirty_inode,
  98
  99         TP_PROTO(struct inode *inode, int flags),
 100
 101         TP_ARGS(inode, flags)
 102 );
 103
 104 DECLARE_EVENT_CLASS(writeback_write_inode_template,
 105
 106         TP_PROTO(struct inode *inode, struct writeback_control *wbc),
 107
 108         TP_ARGS(inode, wbc),
 109
 110         TP_STRUCT__entry (
 111                 __array(char, name, 32)
 112                 __field(unsigned long, ino)
 113                 __field(int, sync_mode)
 114         ),
 115
 116         TP_fast_assign(
 117                 strncpy(__entry->name,
 118                         dev_name(inode->i_mapping->backing_dev_info->dev), 32);
 119                 __entry->ino            = inode->i_ino;
 120                 __entry->sync_mode      = wbc->sync_mode;
 121         ),
 122
 123         TP_printk("bdi %s: ino=%lu sync_mode=%d",
 124                 __entry->name,
 125                 __entry->ino,
 126                 __entry->sync_mode
 127         )
 128 );
 129
 130 DEFINE_EVENT(writeback_write_inode_template, writeback_write_inode_start,
 131
 132         TP_PROTO(struct inode *inode, struct writeback_control *wbc),
 133
 134         TP_ARGS(inode, wbc)
 135 );
 136
 137 DEFINE_EVENT(writeback_write_inode_template, writeback_write_inode,
 138
 139         TP_PROTO(struct inode *inode, struct writeback_control *wbc),
 140
 141         TP_ARGS(inode, wbc)
 142 );
 143
 144 DECLARE_EVENT_CLASS(writeback_work_class,
 145         TP_PROTO(struct backing_dev_info *bdi, struct wb_writeback_work *work),
 146         TP_ARGS(bdi, work),
 147         TP_STRUCT__entry(
 148                 __array(char, name, 32)
 149                 __field(long, nr_pages)
 150                 __field(dev_t, sb_dev)
 151                 __field(int, sync_mode)
 152                 __field(int, for_kupdate)
 153                 __field(int, range_cyclic)
 154                 __field(int, for_background)
 155                 __field(int, reason)
 156         ),
 157         TP_fast_assign(
 158                 struct device *dev = bdi->dev;
 159                 if (!dev)
 160                         dev = default_backing_dev_info.dev;
 161                 strncpy(__entry->name, dev_name(dev), 32);
 162                 __entry->nr_pages = work->nr_pages;
 163                 __entry->sb_dev = work->sb ? work->sb->s_dev : 0;
 164                 __entry->sync_mode = work->sync_mode;
 165                 __entry->for_kupdate = work->for_kupdate;
 166                 __entry->range_cyclic = work->range_cyclic;
 167                 __entry->for_background = work->for_background;
 168                 __entry->reason = work->reason;
 169         ),
 170         TP_printk("bdi %s: sb_dev %d:%d nr_pages=%ld sync_mode=%d "
 171                   "kupdate=%d range_cyclic=%d background=%d reason=%s",
 172                   __entry->name,
 173                   MAJOR(__entry->sb_dev), MINOR(__entry->sb_dev),
 174                   __entry->nr_pages,
 175                   __entry->sync_mode,
 176                   __entry->for_kupdate,
 177                   __entry->range_cyclic,
 178                   __entry->for_background,
 179                   __print_symbolic(__entry->reason, WB_WORK_REASON)
 180         )
 181 );
 182 #define DEFINE_WRITEBACK_WORK_EVENT(name) \
 183 DEFINE_EVENT(writeback_work_class, name, \
 184         TP_PROTO(struct backing_dev_info *bdi, struct wb_writeback_work *work), \
 185         TP_ARGS(bdi, work))
 186 DEFINE_WRITEBACK_WORK_EVENT(writeback_queue);
 187 DEFINE_WRITEBACK_WORK_EVENT(writeback_exec);
 188 DEFINE_WRITEBACK_WORK_EVENT(writeback_start);
 189 DEFINE_WRITEBACK_WORK_EVENT(writeback_written);
 190 DEFINE_WRITEBACK_WORK_EVENT(writeback_wait);
 191
 192 TRACE_EVENT(writeback_pages_written,
 193         TP_PROTO(long pages_written),
 194         TP_ARGS(pages_written),
 195         TP_STRUCT__entry(
 196                 __field(long,           pages)
 197         ),
 198         TP_fast_assign(
 199                 __entry->pages          = pages_written;
 200         ),
 201         TP_printk("%ld", __entry->pages)
 202 );
 203
 204 DECLARE_EVENT_CLASS(writeback_class,
 205         TP_PROTO(struct backing_dev_info *bdi),
 206         TP_ARGS(bdi),
 207         TP_STRUCT__entry(
 208                 __array(char, name, 32)
 209         ),
 210         TP_fast_assign(
 211                 strncpy(__entry->name, dev_name(bdi->dev), 32);
 212         ),
 213         TP_printk("bdi %s",
 214                   __entry->name
 215         )
 216 );
 217 #define DEFINE_WRITEBACK_EVENT(name) \
 218 DEFINE_EVENT(writeback_class, name, \
 219         TP_PROTO(struct backing_dev_info *bdi), \
 220         TP_ARGS(bdi))
 221
 222 DEFINE_WRITEBACK_EVENT(writeback_nowork);
 223 DEFINE_WRITEBACK_EVENT(writeback_wake_background);
 224 DEFINE_WRITEBACK_EVENT(writeback_bdi_register);
 225 DEFINE_WRITEBACK_EVENT(writeback_bdi_unregister);
 226
 227 DECLARE_EVENT_CLASS(wbc_class,
 228         TP_PROTO(struct writeback_control *wbc, struct backing_dev_info *bdi),
 229         TP_ARGS(wbc, bdi),
 230         TP_STRUCT__entry(
 231                 __array(char, name, 32)
 232                 __field(long, nr_to_write)
 233                 __field(long, pages_skipped)
 234                 __field(int, sync_mode)
 235                 __field(int, for_kupdate)
 236                 __field(int, for_background)
 237                 __field(int, for_reclaim)
 238                 __field(int, range_cyclic)
 239                 __field(long, range_start)
 240                 __field(long, range_end)
 241         ),
 242
 243         TP_fast_assign(
 244                 strncpy(__entry->name, dev_name(bdi->dev), 32);
 245                 __entry->nr_to_write    = wbc->nr_to_write;
 246                 __entry->pages_skipped  = wbc->pages_skipped;
 247                 __entry->sync_mode      = wbc->sync_mode;
 248                 __entry->for_kupdate    = wbc->for_kupdate;
 249                 __entry->for_background = wbc->for_background;
 250                 __entry->for_reclaim    = wbc->for_reclaim;
 251                 __entry->range_cyclic   = wbc->range_cyclic;
 252                 __entry->range_start    = (long)wbc->range_start;
 253                 __entry->range_end      = (long)wbc->range_end;
 254         ),
 255
 256         TP_printk("bdi %s: towrt=%ld skip=%ld mode=%d kupd=%d "
 257                 "bgrd=%d reclm=%d cyclic=%d "
 258                 "start=0x%lx end=0x%lx",
 259                 __entry->name,
 260                 __entry->nr_to_write,
 261                 __entry->pages_skipped,
 262                 __entry->sync_mode,
 263                 __entry->for_kupdate,
 264                 __entry->for_background,
 265                 __entry->for_reclaim,
 266                 __entry->range_cyclic,
 267                 __entry->range_start,
 268                 __entry->range_end)
 269 )
 270
 271 #define DEFINE_WBC_EVENT(name) \
 272 DEFINE_EVENT(wbc_class, name, \
 273         TP_PROTO(struct writeback_control *wbc, struct backing_dev_info *bdi), \
 274         TP_ARGS(wbc, bdi))
 275 DEFINE_WBC_EVENT(wbc_writepage);
 276
 277 TRACE_EVENT(writeback_queue_io,
 278         TP_PROTO(struct bdi_writeback *wb,
 279                  struct wb_writeback_work *work,
 280                  int moved),
 281         TP_ARGS(wb, work, moved),
 282         TP_STRUCT__entry(
 283                 __array(char,           name, 32)
 284                 __field(unsigned long,  older)
 285                 __field(long,           age)
 286                 __field(int,            moved)
 287                 __field(int,            reason)
 288         ),
 289         TP_fast_assign(
 290                 unsigned long *older_than_this = work->older_than_this;
 291                 strncpy(__entry->name, dev_name(wb->bdi->dev), 32);
 292                 __entry->older  = older_than_this ?  *older_than_this : 0;
 293                 __entry->age    = older_than_this ?
 294                                   (jiffies - *older_than_this) * 1000 / HZ : -1;
 295                 __entry->moved  = moved;
 296                 __entry->reason = work->reason;
 297         ),
 298         TP_printk("bdi %s: older=%lu age=%ld enqueue=%d reason=%s",
 299                 __entry->name,
 300                 __entry->older, /* older_than_this in jiffies */
 301                 __entry->age,   /* older_than_this in relative milliseconds */
 302                 __entry->moved,
 303                 __print_symbolic(__entry->reason, WB_WORK_REASON)
 304         )
 305 );
 306
 307 TRACE_EVENT(global_dirty_state,
 308
 309         TP_PROTO(unsigned long background_thresh,
 310                  unsigned long dirty_thresh
 311         ),
 312
 313         TP_ARGS(background_thresh,
 314                 dirty_thresh
 315         ),
 316
 317         TP_STRUCT__entry(
 318                 __field(unsigned long,  nr_dirty)
 319                 __field(unsigned long,  nr_writeback)
 320                 __field(unsigned long,  nr_unstable)
 321                 __field(unsigned long,  background_thresh)
 322                 __field(unsigned long,  dirty_thresh)
 323                 __field(unsigned long,  dirty_limit)
 324                 __field(unsigned long,  nr_dirtied)
 325                 __field(unsigned long,  nr_written)
 326         ),
 327
 328         TP_fast_assign(
 329                 __entry->nr_dirty       = global_page_state(NR_FILE_DIRTY);
 330                 __entry->nr_writeback   = global_page_state(NR_WRITEBACK);
 331                 __entry->nr_unstable    = global_page_state(NR_UNSTABLE_NFS);
 332                 __entry->nr_dirtied     = global_page_state(NR_DIRTIED);
 333                 __entry->nr_written     = global_page_state(NR_WRITTEN);
 334                 __entry->background_thresh = background_thresh;
 335                 __entry->dirty_thresh   = dirty_thresh;
 336                 __entry->dirty_limit = global_dirty_limit;
 337         ),
 338
 339         TP_printk("dirty=%lu writeback=%lu unstable=%lu "
 340                   "bg_thresh=%lu thresh=%lu limit=%lu "
 341                   "dirtied=%lu written=%lu",
 342                   __entry->nr_dirty,
 343                   __entry->nr_writeback,
 344                   __entry->nr_unstable,
 345                   __entry->background_thresh,
 346                   __entry->dirty_thresh,
 347                   __entry->dirty_limit,
 348                   __entry->nr_dirtied,
 349                   __entry->nr_written
 350         )
 351 );
 352
 353 #define KBps(x)                 ((x) << (PAGE_SHIFT - 10))
 354
 355 TRACE_EVENT(bdi_dirty_ratelimit,
 356
 357         TP_PROTO(struct backing_dev_info *bdi,
 358                  unsigned long dirty_rate,
 359                  unsigned long task_ratelimit),
 360
 361         TP_ARGS(bdi, dirty_rate, task_ratelimit),
 362
 363         TP_STRUCT__entry(
 364                 __array(char,           bdi, 32)
 365                 __field(unsigned long,  write_bw)
 366                 __field(unsigned long,  avg_write_bw)
 367                 __field(unsigned long,  dirty_rate)
 368                 __field(unsigned long,  dirty_ratelimit)
 369                 __field(unsigned long,  task_ratelimit)
 370                 __field(unsigned long,  balanced_dirty_ratelimit)
 371         ),
 372
 373         TP_fast_assign(
 374                 strlcpy(__entry->bdi, dev_name(bdi->dev), 32);
 375                 __entry->write_bw       = KBps(bdi->write_bandwidth);
 376                 __entry->avg_write_bw   = KBps(bdi->avg_write_bandwidth);
 377                 __entry->dirty_rate     = KBps(dirty_rate);
 378                 __entry->dirty_ratelimit = KBps(bdi->dirty_ratelimit);
 379                 __entry->task_ratelimit = KBps(task_ratelimit);
 380                 __entry->balanced_dirty_ratelimit =
 381                                           KBps(bdi->balanced_dirty_ratelimit);
 382         ),
 383
 384         TP_printk("bdi %s: "
 385                   "write_bw=%lu awrite_bw=%lu dirty_rate=%lu "
 386                   "dirty_ratelimit=%lu task_ratelimit=%lu "
 387                   "balanced_dirty_ratelimit=%lu",
 388                   __entry->bdi,
 389                   __entry->write_bw,            /* write bandwidth */
 390                   __entry->avg_write_bw,        /* avg write bandwidth */
 391                   __entry->dirty_rate,          /* bdi dirty rate */
 392                   __entry->dirty_ratelimit,     /* base ratelimit */
 393                   __entry->task_ratelimit, /* ratelimit with position control */
 394                   __entry->balanced_dirty_ratelimit /* the balanced ratelimit */
 395         )
 396 );
 397
 398 TRACE_EVENT(balance_dirty_pages,
 399
 400         TP_PROTO(struct backing_dev_info *bdi,
 401                  unsigned long thresh,
 402                  unsigned long bg_thresh,
 403                  unsigned long dirty,
 404                  unsigned long bdi_thresh,
 405                  unsigned long bdi_dirty,
 406                  unsigned long dirty_ratelimit,
 407                  unsigned long task_ratelimit,
 408                  unsigned long dirtied,
 409                  unsigned long period,
 410                  long pause,
 411                  unsigned long start_time),
 412
 413         TP_ARGS(bdi, thresh, bg_thresh, dirty, bdi_thresh, bdi_dirty,
 414                 dirty_ratelimit, task_ratelimit,
 415                 dirtied, period, pause, start_time),
 416
 417         TP_STRUCT__entry(
 418                 __array(         char,  bdi, 32)
 419                 __field(unsigned long,  limit)
 420                 __field(unsigned long,  setpoint)
 421                 __field(unsigned long,  dirty)
 422                 __field(unsigned long,  bdi_setpoint)
 423                 __field(unsigned long,  bdi_dirty)
 424                 __field(unsigned long,  dirty_ratelimit)
 425                 __field(unsigned long,  task_ratelimit)
 426                 __field(unsigned int,   dirtied)
 427                 __field(unsigned int,   dirtied_pause)
 428                 __field(unsigned long,  paused)
 429                 __field(         long,  pause)
 430                 __field(unsigned long,  period)
 431                 __field(         long,  think)
 432         ),
 433
 434         TP_fast_assign(
 435                 unsigned long freerun = (thresh + bg_thresh) / 2;
 436                 strlcpy(__entry->bdi, dev_name(bdi->dev), 32);
 437
 438                 __entry->limit          = global_dirty_limit;
 439                 __entry->setpoint       = (global_dirty_limit + freerun) / 2;
 440                 __entry->dirty          = dirty;
 441                 __entry->bdi_setpoint   = __entry->setpoint *
 442                                                 bdi_thresh / (thresh + 1);
 443                 __entry->bdi_dirty      = bdi_dirty;
 444                 __entry->dirty_ratelimit = KBps(dirty_ratelimit);
 445                 __entry->task_ratelimit = KBps(task_ratelimit);
 446                 __entry->dirtied        = dirtied;
 447                 __entry->dirtied_pause  = current->nr_dirtied_pause;
 448                 __entry->think          = current->dirty_paused_when == 0 ? 0 :
 449                          (long)(jiffies - current->dirty_paused_when) * 1000/HZ;
 450                 __entry->period         = period * 1000 / HZ;
 451                 __entry->pause          = pause * 1000 / HZ;
 452                 __entry->paused         = (jiffies - start_time) * 1000 / HZ;
 453         ),
 454
 455
 456         TP_printk("bdi %s: "
 457                   "limit=%lu setpoint=%lu dirty=%lu "
 458                   "bdi_setpoint=%lu bdi_dirty=%lu "
 459                   "dirty_ratelimit=%lu task_ratelimit=%lu "
 460                   "dirtied=%u dirtied_pause=%u "
 461                   "paused=%lu pause=%ld period=%lu think=%ld",
 462                   __entry->bdi,
 463                   __entry->limit,
 464                   __entry->setpoint,
 465                   __entry->dirty,
 466                   __entry->bdi_setpoint,
 467                   __entry->bdi_dirty,
 468                   __entry->dirty_ratelimit,
 469                   __entry->task_ratelimit,
 470                   __entry->dirtied,
 471                   __entry->dirtied_pause,
 472                   __entry->paused,      /* ms */
 473                   __entry->pause,       /* ms */
 474                   __entry->period,      /* ms */
 475                   __entry->think        /* ms */
 476           )
 477 );
 478
 479 TRACE_EVENT(writeback_sb_inodes_requeue,
 480
 481         TP_PROTO(struct inode *inode),
 482         TP_ARGS(inode),
 483
 484         TP_STRUCT__entry(
 485                 __array(char, name, 32)
 486                 __field(unsigned long, ino)
 487                 __field(unsigned long, state)
 488                 __field(unsigned long, dirtied_when)
 489         ),
 490
 491         TP_fast_assign(
 492                 strncpy(__entry->name,
 493                         dev_name(inode_to_bdi(inode)->dev), 32);
 494                 __entry->ino            = inode->i_ino;
 495                 __entry->state          = inode->i_state;
 496                 __entry->dirtied_when   = inode->dirtied_when;
 497         ),
 498
 499         TP_printk("bdi %s: ino=%lu state=%s dirtied_when=%lu age=%lu",
 500                   __entry->name,
 501                   __entry->ino,
 502                   show_inode_state(__entry->state),
 503                   __entry->dirtied_when,
 504                   (jiffies - __entry->dirtied_when) / HZ
 505         )
 506 );
 507
 508 DECLARE_EVENT_CLASS(writeback_congest_waited_template,
 509
 510         TP_PROTO(unsigned int usec_timeout, unsigned int usec_delayed),
 511
 512         TP_ARGS(usec_timeout, usec_delayed),
 513
 514         TP_STRUCT__entry(
 515                 __field(        unsigned int,   usec_timeout    )
 516                 __field(        unsigned int,   usec_delayed    )
 517         ),
 518
 519         TP_fast_assign(
 520                 __entry->usec_timeout   = usec_timeout;
 521                 __entry->usec_delayed   = usec_delayed;
 522         ),
 523
 524         TP_printk("usec_timeout=%u usec_delayed=%u",
 525                         __entry->usec_timeout,
 526                         __entry->usec_delayed)
 527 );
 528
 529 DEFINE_EVENT(writeback_congest_waited_template, writeback_congestion_wait,
 530
 531         TP_PROTO(unsigned int usec_timeout, unsigned int usec_delayed),
 532
 533         TP_ARGS(usec_timeout, usec_delayed)
 534 );
 535
 536 DEFINE_EVENT(writeback_congest_waited_template, writeback_wait_iff_congested,
 537
 538         TP_PROTO(unsigned int usec_timeout, unsigned int usec_delayed),
 539
 540         TP_ARGS(usec_timeout, usec_delayed)
 541 );
 542
 543 DECLARE_EVENT_CLASS(writeback_single_inode_template,
 544
 545         TP_PROTO(struct inode *inode,
 546                  struct writeback_control *wbc,
 547                  unsigned long nr_to_write
 548         ),
 549
 550         TP_ARGS(inode, wbc, nr_to_write),
 551
 552         TP_STRUCT__entry(
 553                 __array(char, name, 32)
 554                 __field(unsigned long, ino)
 555                 __field(unsigned long, state)
 556                 __field(unsigned long, dirtied_when)
 557                 __field(unsigned long, writeback_index)
 558                 __field(long, nr_to_write)
 559                 __field(unsigned long, wrote)
 560         ),
 561
 562         TP_fast_assign(
 563                 strncpy(__entry->name,
 564                         dev_name(inode_to_bdi(inode)->dev), 32);
 565                 __entry->ino            = inode->i_ino;
 566                 __entry->state          = inode->i_state;
 567                 __entry->dirtied_when   = inode->dirtied_when;
 568                 __entry->writeback_index = inode->i_mapping->writeback_index;
 569                 __entry->nr_to_write    = nr_to_write;
 570                 __entry->wrote          = nr_to_write - wbc->nr_to_write;
 571         ),
 572
 573         TP_printk("bdi %s: ino=%lu state=%s dirtied_when=%lu age=%lu "
 574                   "index=%lu to_write=%ld wrote=%lu",
 575                   __entry->name,
 576                   __entry->ino,
 577                   show_inode_state(__entry->state),
 578                   __entry->dirtied_when,
 579                   (jiffies - __entry->dirtied_when) / HZ,
 580                   __entry->writeback_index,
 581                   __entry->nr_to_write,
 582                   __entry->wrote
 583         )
 584 );
 585
 586 DEFINE_EVENT(writeback_single_inode_template, writeback_single_inode_start,
 587         TP_PROTO(struct inode *inode,
 588                  struct writeback_control *wbc,
 589                  unsigned long nr_to_write),
 590         TP_ARGS(inode, wbc, nr_to_write)
 591 );
 592
 593 DEFINE_EVENT(writeback_single_inode_template, writeback_single_inode,
 594         TP_PROTO(struct inode *inode,
 595                  struct writeback_control *wbc,
 596                  unsigned long nr_to_write),
 597         TP_ARGS(inode, wbc, nr_to_write)
 598 );
 599
 600 #endif /* _TRACE_WRITEBACK_H */
 601
 602 /* This part must be outside protection */
 603 #include <trace/define_trace.h>