linux/include/trace/events/writeback.h
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   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/tracepoint.h>
   8#include <linux/backing-dev.h>
   9#include <linux/writeback.h>
  10
  11#define show_inode_state(state)                                 \
  12        __print_flags(state, "|",                               \
  13                {I_DIRTY_SYNC,          "I_DIRTY_SYNC"},        \
  14                {I_DIRTY_DATASYNC,      "I_DIRTY_DATASYNC"},    \
  15                {I_DIRTY_PAGES,         "I_DIRTY_PAGES"},       \
  16                {I_NEW,                 "I_NEW"},               \
  17                {I_WILL_FREE,           "I_WILL_FREE"},         \
  18                {I_FREEING,             "I_FREEING"},           \
  19                {I_CLEAR,               "I_CLEAR"},             \
  20                {I_SYNC,                "I_SYNC"},              \
  21                {I_DIRTY_TIME,          "I_DIRTY_TIME"},        \
  22                {I_DIRTY_TIME_EXPIRED,  "I_DIRTY_TIME_EXPIRED"}, \
  23                {I_REFERENCED,          "I_REFERENCED"}         \
  24        )
  25
  26/* enums need to be exported to user space */
  27#undef EM
  28#undef EMe
  29#define EM(a,b)         TRACE_DEFINE_ENUM(a);
  30#define EMe(a,b)        TRACE_DEFINE_ENUM(a);
  31
  32#define WB_WORK_REASON                                                  \
  33        EM( WB_REASON_BACKGROUND,               "background")           \
  34        EM( WB_REASON_TRY_TO_FREE_PAGES,        "try_to_free_pages")    \
  35        EM( WB_REASON_SYNC,                     "sync")                 \
  36        EM( WB_REASON_PERIODIC,                 "periodic")             \
  37        EM( WB_REASON_LAPTOP_TIMER,             "laptop_timer")         \
  38        EM( WB_REASON_FREE_MORE_MEM,            "free_more_memory")     \
  39        EM( WB_REASON_FS_FREE_SPACE,            "fs_free_space")        \
  40        EMe(WB_REASON_FORKER_THREAD,            "forker_thread")
  41
  42WB_WORK_REASON
  43
  44/*
  45 * Now redefine the EM() and EMe() macros to map the enums to the strings
  46 * that will be printed in the output.
  47 */
  48#undef EM
  49#undef EMe
  50#define EM(a,b)         { a, b },
  51#define EMe(a,b)        { a, b }
  52
  53struct wb_writeback_work;
  54
  55TRACE_EVENT(writeback_dirty_page,
  56
  57        TP_PROTO(struct page *page, struct address_space *mapping),
  58
  59        TP_ARGS(page, mapping),
  60
  61        TP_STRUCT__entry (
  62                __array(char, name, 32)
  63                __field(unsigned long, ino)
  64                __field(pgoff_t, index)
  65        ),
  66
  67        TP_fast_assign(
  68                strncpy(__entry->name,
  69                        mapping ? dev_name(inode_to_bdi(mapping->host)->dev) : "(unknown)", 32);
  70                __entry->ino = mapping ? mapping->host->i_ino : 0;
  71                __entry->index = page->index;
  72        ),
  73
  74        TP_printk("bdi %s: ino=%lu index=%lu",
  75                __entry->name,
  76                __entry->ino,
  77                __entry->index
  78        )
  79);
  80
  81DECLARE_EVENT_CLASS(writeback_dirty_inode_template,
  82
  83        TP_PROTO(struct inode *inode, int flags),
  84
  85        TP_ARGS(inode, flags),
  86
  87        TP_STRUCT__entry (
  88                __array(char, name, 32)
  89                __field(unsigned long, ino)
  90                __field(unsigned long, state)
  91                __field(unsigned long, flags)
  92        ),
  93
  94        TP_fast_assign(
  95                struct backing_dev_info *bdi = inode_to_bdi(inode);
  96
  97                /* may be called for files on pseudo FSes w/ unregistered bdi */
  98                strncpy(__entry->name,
  99                        bdi->dev ? dev_name(bdi->dev) : "(unknown)", 32);
 100                __entry->ino            = inode->i_ino;
 101                __entry->state          = inode->i_state;
 102                __entry->flags          = flags;
 103        ),
 104
 105        TP_printk("bdi %s: ino=%lu state=%s flags=%s",
 106                __entry->name,
 107                __entry->ino,
 108                show_inode_state(__entry->state),
 109                show_inode_state(__entry->flags)
 110        )
 111);
 112
 113DEFINE_EVENT(writeback_dirty_inode_template, writeback_mark_inode_dirty,
 114
 115        TP_PROTO(struct inode *inode, int flags),
 116
 117        TP_ARGS(inode, flags)
 118);
 119
 120DEFINE_EVENT(writeback_dirty_inode_template, writeback_dirty_inode_start,
 121
 122        TP_PROTO(struct inode *inode, int flags),
 123
 124        TP_ARGS(inode, flags)
 125);
 126
 127DEFINE_EVENT(writeback_dirty_inode_template, writeback_dirty_inode,
 128
 129        TP_PROTO(struct inode *inode, int flags),
 130
 131        TP_ARGS(inode, flags)
 132);
 133
 134DECLARE_EVENT_CLASS(writeback_write_inode_template,
 135
 136        TP_PROTO(struct inode *inode, struct writeback_control *wbc),
 137
 138        TP_ARGS(inode, wbc),
 139
 140        TP_STRUCT__entry (
 141                __array(char, name, 32)
 142                __field(unsigned long, ino)
 143                __field(int, sync_mode)
 144        ),
 145
 146        TP_fast_assign(
 147                strncpy(__entry->name,
 148                        dev_name(inode_to_bdi(inode)->dev), 32);
 149                __entry->ino            = inode->i_ino;
 150                __entry->sync_mode      = wbc->sync_mode;
 151        ),
 152
 153        TP_printk("bdi %s: ino=%lu sync_mode=%d",
 154                __entry->name,
 155                __entry->ino,
 156                __entry->sync_mode
 157        )
 158);
 159
 160DEFINE_EVENT(writeback_write_inode_template, writeback_write_inode_start,
 161
 162        TP_PROTO(struct inode *inode, struct writeback_control *wbc),
 163
 164        TP_ARGS(inode, wbc)
 165);
 166
 167DEFINE_EVENT(writeback_write_inode_template, writeback_write_inode,
 168
 169        TP_PROTO(struct inode *inode, struct writeback_control *wbc),
 170
 171        TP_ARGS(inode, wbc)
 172);
 173
 174DECLARE_EVENT_CLASS(writeback_work_class,
 175        TP_PROTO(struct backing_dev_info *bdi, struct wb_writeback_work *work),
 176        TP_ARGS(bdi, work),
 177        TP_STRUCT__entry(
 178                __array(char, name, 32)
 179                __field(long, nr_pages)
 180                __field(dev_t, sb_dev)
 181                __field(int, sync_mode)
 182                __field(int, for_kupdate)
 183                __field(int, range_cyclic)
 184                __field(int, for_background)
 185                __field(int, reason)
 186        ),
 187        TP_fast_assign(
 188                strncpy(__entry->name,
 189                        bdi->dev ? dev_name(bdi->dev) : "(unknown)", 32);
 190                __entry->nr_pages = work->nr_pages;
 191                __entry->sb_dev = work->sb ? work->sb->s_dev : 0;
 192                __entry->sync_mode = work->sync_mode;
 193                __entry->for_kupdate = work->for_kupdate;
 194                __entry->range_cyclic = work->range_cyclic;
 195                __entry->for_background = work->for_background;
 196                __entry->reason = work->reason;
 197        ),
 198        TP_printk("bdi %s: sb_dev %d:%d nr_pages=%ld sync_mode=%d "
 199                  "kupdate=%d range_cyclic=%d background=%d reason=%s",
 200                  __entry->name,
 201                  MAJOR(__entry->sb_dev), MINOR(__entry->sb_dev),
 202                  __entry->nr_pages,
 203                  __entry->sync_mode,
 204                  __entry->for_kupdate,
 205                  __entry->range_cyclic,
 206                  __entry->for_background,
 207                  __print_symbolic(__entry->reason, WB_WORK_REASON)
 208        )
 209);
 210#define DEFINE_WRITEBACK_WORK_EVENT(name) \
 211DEFINE_EVENT(writeback_work_class, name, \
 212        TP_PROTO(struct backing_dev_info *bdi, struct wb_writeback_work *work), \
 213        TP_ARGS(bdi, work))
 214DEFINE_WRITEBACK_WORK_EVENT(writeback_queue);
 215DEFINE_WRITEBACK_WORK_EVENT(writeback_exec);
 216DEFINE_WRITEBACK_WORK_EVENT(writeback_start);
 217DEFINE_WRITEBACK_WORK_EVENT(writeback_written);
 218DEFINE_WRITEBACK_WORK_EVENT(writeback_wait);
 219
 220TRACE_EVENT(writeback_pages_written,
 221        TP_PROTO(long pages_written),
 222        TP_ARGS(pages_written),
 223        TP_STRUCT__entry(
 224                __field(long,           pages)
 225        ),
 226        TP_fast_assign(
 227                __entry->pages          = pages_written;
 228        ),
 229        TP_printk("%ld", __entry->pages)
 230);
 231
 232DECLARE_EVENT_CLASS(writeback_class,
 233        TP_PROTO(struct backing_dev_info *bdi),
 234        TP_ARGS(bdi),
 235        TP_STRUCT__entry(
 236                __array(char, name, 32)
 237        ),
 238        TP_fast_assign(
 239                strncpy(__entry->name, dev_name(bdi->dev), 32);
 240        ),
 241        TP_printk("bdi %s",
 242                  __entry->name
 243        )
 244);
 245#define DEFINE_WRITEBACK_EVENT(name) \
 246DEFINE_EVENT(writeback_class, name, \
 247        TP_PROTO(struct backing_dev_info *bdi), \
 248        TP_ARGS(bdi))
 249
 250DEFINE_WRITEBACK_EVENT(writeback_nowork);
 251DEFINE_WRITEBACK_EVENT(writeback_wake_background);
 252DEFINE_WRITEBACK_EVENT(writeback_bdi_register);
 253
 254DECLARE_EVENT_CLASS(wbc_class,
 255        TP_PROTO(struct writeback_control *wbc, struct backing_dev_info *bdi),
 256        TP_ARGS(wbc, bdi),
 257        TP_STRUCT__entry(
 258                __array(char, name, 32)
 259                __field(long, nr_to_write)
 260                __field(long, pages_skipped)
 261                __field(int, sync_mode)
 262                __field(int, for_kupdate)
 263                __field(int, for_background)
 264                __field(int, for_reclaim)
 265                __field(int, range_cyclic)
 266                __field(long, range_start)
 267                __field(long, range_end)
 268        ),
 269
 270        TP_fast_assign(
 271                strncpy(__entry->name, dev_name(bdi->dev), 32);
 272                __entry->nr_to_write    = wbc->nr_to_write;
 273                __entry->pages_skipped  = wbc->pages_skipped;
 274                __entry->sync_mode      = wbc->sync_mode;
 275                __entry->for_kupdate    = wbc->for_kupdate;
 276                __entry->for_background = wbc->for_background;
 277                __entry->for_reclaim    = wbc->for_reclaim;
 278                __entry->range_cyclic   = wbc->range_cyclic;
 279                __entry->range_start    = (long)wbc->range_start;
 280                __entry->range_end      = (long)wbc->range_end;
 281        ),
 282
 283        TP_printk("bdi %s: towrt=%ld skip=%ld mode=%d kupd=%d "
 284                "bgrd=%d reclm=%d cyclic=%d "
 285                "start=0x%lx end=0x%lx",
 286                __entry->name,
 287                __entry->nr_to_write,
 288                __entry->pages_skipped,
 289                __entry->sync_mode,
 290                __entry->for_kupdate,
 291                __entry->for_background,
 292                __entry->for_reclaim,
 293                __entry->range_cyclic,
 294                __entry->range_start,
 295                __entry->range_end)
 296)
 297
 298#define DEFINE_WBC_EVENT(name) \
 299DEFINE_EVENT(wbc_class, name, \
 300        TP_PROTO(struct writeback_control *wbc, struct backing_dev_info *bdi), \
 301        TP_ARGS(wbc, bdi))
 302DEFINE_WBC_EVENT(wbc_writepage);
 303
 304TRACE_EVENT(writeback_queue_io,
 305        TP_PROTO(struct bdi_writeback *wb,
 306                 struct wb_writeback_work *work,
 307                 int moved),
 308        TP_ARGS(wb, work, moved),
 309        TP_STRUCT__entry(
 310                __array(char,           name, 32)
 311                __field(unsigned long,  older)
 312                __field(long,           age)
 313                __field(int,            moved)
 314                __field(int,            reason)
 315        ),
 316        TP_fast_assign(
 317                unsigned long *older_than_this = work->older_than_this;
 318                strncpy(__entry->name, dev_name(wb->bdi->dev), 32);
 319                __entry->older  = older_than_this ?  *older_than_this : 0;
 320                __entry->age    = older_than_this ?
 321                                  (jiffies - *older_than_this) * 1000 / HZ : -1;
 322                __entry->moved  = moved;
 323                __entry->reason = work->reason;
 324        ),
 325        TP_printk("bdi %s: older=%lu age=%ld enqueue=%d reason=%s",
 326                __entry->name,
 327                __entry->older, /* older_than_this in jiffies */
 328                __entry->age,   /* older_than_this in relative milliseconds */
 329                __entry->moved,
 330                __print_symbolic(__entry->reason, WB_WORK_REASON)
 331        )
 332);
 333
 334TRACE_EVENT(global_dirty_state,
 335
 336        TP_PROTO(unsigned long background_thresh,
 337                 unsigned long dirty_thresh
 338        ),
 339
 340        TP_ARGS(background_thresh,
 341                dirty_thresh
 342        ),
 343
 344        TP_STRUCT__entry(
 345                __field(unsigned long,  nr_dirty)
 346                __field(unsigned long,  nr_writeback)
 347                __field(unsigned long,  nr_unstable)
 348                __field(unsigned long,  background_thresh)
 349                __field(unsigned long,  dirty_thresh)
 350                __field(unsigned long,  dirty_limit)
 351                __field(unsigned long,  nr_dirtied)
 352                __field(unsigned long,  nr_written)
 353        ),
 354
 355        TP_fast_assign(
 356                __entry->nr_dirty       = global_page_state(NR_FILE_DIRTY);
 357                __entry->nr_writeback   = global_page_state(NR_WRITEBACK);
 358                __entry->nr_unstable    = global_page_state(NR_UNSTABLE_NFS);
 359                __entry->nr_dirtied     = global_page_state(NR_DIRTIED);
 360                __entry->nr_written     = global_page_state(NR_WRITTEN);
 361                __entry->background_thresh = background_thresh;
 362                __entry->dirty_thresh   = dirty_thresh;
 363                __entry->dirty_limit    = global_wb_domain.dirty_limit;
 364        ),
 365
 366        TP_printk("dirty=%lu writeback=%lu unstable=%lu "
 367                  "bg_thresh=%lu thresh=%lu limit=%lu "
 368                  "dirtied=%lu written=%lu",
 369                  __entry->nr_dirty,
 370                  __entry->nr_writeback,
 371                  __entry->nr_unstable,
 372                  __entry->background_thresh,
 373                  __entry->dirty_thresh,
 374                  __entry->dirty_limit,
 375                  __entry->nr_dirtied,
 376                  __entry->nr_written
 377        )
 378);
 379
 380#define KBps(x)                 ((x) << (PAGE_SHIFT - 10))
 381
 382TRACE_EVENT(bdi_dirty_ratelimit,
 383
 384        TP_PROTO(struct backing_dev_info *bdi,
 385                 unsigned long dirty_rate,
 386                 unsigned long task_ratelimit),
 387
 388        TP_ARGS(bdi, dirty_rate, task_ratelimit),
 389
 390        TP_STRUCT__entry(
 391                __array(char,           bdi, 32)
 392                __field(unsigned long,  write_bw)
 393                __field(unsigned long,  avg_write_bw)
 394                __field(unsigned long,  dirty_rate)
 395                __field(unsigned long,  dirty_ratelimit)
 396                __field(unsigned long,  task_ratelimit)
 397                __field(unsigned long,  balanced_dirty_ratelimit)
 398        ),
 399
 400        TP_fast_assign(
 401                strlcpy(__entry->bdi, dev_name(bdi->dev), 32);
 402                __entry->write_bw       = KBps(bdi->wb.write_bandwidth);
 403                __entry->avg_write_bw   = KBps(bdi->wb.avg_write_bandwidth);
 404                __entry->dirty_rate     = KBps(dirty_rate);
 405                __entry->dirty_ratelimit = KBps(bdi->wb.dirty_ratelimit);
 406                __entry->task_ratelimit = KBps(task_ratelimit);
 407                __entry->balanced_dirty_ratelimit =
 408                                        KBps(bdi->wb.balanced_dirty_ratelimit);
 409        ),
 410
 411        TP_printk("bdi %s: "
 412                  "write_bw=%lu awrite_bw=%lu dirty_rate=%lu "
 413                  "dirty_ratelimit=%lu task_ratelimit=%lu "
 414                  "balanced_dirty_ratelimit=%lu",
 415                  __entry->bdi,
 416                  __entry->write_bw,            /* write bandwidth */
 417                  __entry->avg_write_bw,        /* avg write bandwidth */
 418                  __entry->dirty_rate,          /* bdi dirty rate */
 419                  __entry->dirty_ratelimit,     /* base ratelimit */
 420                  __entry->task_ratelimit, /* ratelimit with position control */
 421                  __entry->balanced_dirty_ratelimit /* the balanced ratelimit */
 422        )
 423);
 424
 425TRACE_EVENT(balance_dirty_pages,
 426
 427        TP_PROTO(struct backing_dev_info *bdi,
 428                 unsigned long thresh,
 429                 unsigned long bg_thresh,
 430                 unsigned long dirty,
 431                 unsigned long bdi_thresh,
 432                 unsigned long bdi_dirty,
 433                 unsigned long dirty_ratelimit,
 434                 unsigned long task_ratelimit,
 435                 unsigned long dirtied,
 436                 unsigned long period,
 437                 long pause,
 438                 unsigned long start_time),
 439
 440        TP_ARGS(bdi, thresh, bg_thresh, dirty, bdi_thresh, bdi_dirty,
 441                dirty_ratelimit, task_ratelimit,
 442                dirtied, period, pause, start_time),
 443
 444        TP_STRUCT__entry(
 445                __array(         char,  bdi, 32)
 446                __field(unsigned long,  limit)
 447                __field(unsigned long,  setpoint)
 448                __field(unsigned long,  dirty)
 449                __field(unsigned long,  bdi_setpoint)
 450                __field(unsigned long,  bdi_dirty)
 451                __field(unsigned long,  dirty_ratelimit)
 452                __field(unsigned long,  task_ratelimit)
 453                __field(unsigned int,   dirtied)
 454                __field(unsigned int,   dirtied_pause)
 455                __field(unsigned long,  paused)
 456                __field(         long,  pause)
 457                __field(unsigned long,  period)
 458                __field(         long,  think)
 459        ),
 460
 461        TP_fast_assign(
 462                unsigned long freerun = (thresh + bg_thresh) / 2;
 463                strlcpy(__entry->bdi, dev_name(bdi->dev), 32);
 464
 465                __entry->limit          = global_wb_domain.dirty_limit;
 466                __entry->setpoint       = (global_wb_domain.dirty_limit +
 467                                                freerun) / 2;
 468                __entry->dirty          = dirty;
 469                __entry->bdi_setpoint   = __entry->setpoint *
 470                                                bdi_thresh / (thresh + 1);
 471                __entry->bdi_dirty      = bdi_dirty;
 472                __entry->dirty_ratelimit = KBps(dirty_ratelimit);
 473                __entry->task_ratelimit = KBps(task_ratelimit);
 474                __entry->dirtied        = dirtied;
 475                __entry->dirtied_pause  = current->nr_dirtied_pause;
 476                __entry->think          = current->dirty_paused_when == 0 ? 0 :
 477                         (long)(jiffies - current->dirty_paused_when) * 1000/HZ;
 478                __entry->period         = period * 1000 / HZ;
 479                __entry->pause          = pause * 1000 / HZ;
 480                __entry->paused         = (jiffies - start_time) * 1000 / HZ;
 481        ),
 482
 483
 484        TP_printk("bdi %s: "
 485                  "limit=%lu setpoint=%lu dirty=%lu "
 486                  "bdi_setpoint=%lu bdi_dirty=%lu "
 487                  "dirty_ratelimit=%lu task_ratelimit=%lu "
 488                  "dirtied=%u dirtied_pause=%u "
 489                  "paused=%lu pause=%ld period=%lu think=%ld",
 490                  __entry->bdi,
 491                  __entry->limit,
 492                  __entry->setpoint,
 493                  __entry->dirty,
 494                  __entry->bdi_setpoint,
 495                  __entry->bdi_dirty,
 496                  __entry->dirty_ratelimit,
 497                  __entry->task_ratelimit,
 498                  __entry->dirtied,
 499                  __entry->dirtied_pause,
 500                  __entry->paused,      /* ms */
 501                  __entry->pause,       /* ms */
 502                  __entry->period,      /* ms */
 503                  __entry->think        /* ms */
 504          )
 505);
 506
 507TRACE_EVENT(writeback_sb_inodes_requeue,
 508
 509        TP_PROTO(struct inode *inode),
 510        TP_ARGS(inode),
 511
 512        TP_STRUCT__entry(
 513                __array(char, name, 32)
 514                __field(unsigned long, ino)
 515                __field(unsigned long, state)
 516                __field(unsigned long, dirtied_when)
 517        ),
 518
 519        TP_fast_assign(
 520                strncpy(__entry->name,
 521                        dev_name(inode_to_bdi(inode)->dev), 32);
 522                __entry->ino            = inode->i_ino;
 523                __entry->state          = inode->i_state;
 524                __entry->dirtied_when   = inode->dirtied_when;
 525        ),
 526
 527        TP_printk("bdi %s: ino=%lu state=%s dirtied_when=%lu age=%lu",
 528                  __entry->name,
 529                  __entry->ino,
 530                  show_inode_state(__entry->state),
 531                  __entry->dirtied_when,
 532                  (jiffies - __entry->dirtied_when) / HZ
 533        )
 534);
 535
 536DECLARE_EVENT_CLASS(writeback_congest_waited_template,
 537
 538        TP_PROTO(unsigned int usec_timeout, unsigned int usec_delayed),
 539
 540        TP_ARGS(usec_timeout, usec_delayed),
 541
 542        TP_STRUCT__entry(
 543                __field(        unsigned int,   usec_timeout    )
 544                __field(        unsigned int,   usec_delayed    )
 545        ),
 546
 547        TP_fast_assign(
 548                __entry->usec_timeout   = usec_timeout;
 549                __entry->usec_delayed   = usec_delayed;
 550        ),
 551
 552        TP_printk("usec_timeout=%u usec_delayed=%u",
 553                        __entry->usec_timeout,
 554                        __entry->usec_delayed)
 555);
 556
 557DEFINE_EVENT(writeback_congest_waited_template, writeback_congestion_wait,
 558
 559        TP_PROTO(unsigned int usec_timeout, unsigned int usec_delayed),
 560
 561        TP_ARGS(usec_timeout, usec_delayed)
 562);
 563
 564DEFINE_EVENT(writeback_congest_waited_template, writeback_wait_iff_congested,
 565
 566        TP_PROTO(unsigned int usec_timeout, unsigned int usec_delayed),
 567
 568        TP_ARGS(usec_timeout, usec_delayed)
 569);
 570
 571DECLARE_EVENT_CLASS(writeback_single_inode_template,
 572
 573        TP_PROTO(struct inode *inode,
 574                 struct writeback_control *wbc,
 575                 unsigned long nr_to_write
 576        ),
 577
 578        TP_ARGS(inode, wbc, nr_to_write),
 579
 580        TP_STRUCT__entry(
 581                __array(char, name, 32)
 582                __field(unsigned long, ino)
 583                __field(unsigned long, state)
 584                __field(unsigned long, dirtied_when)
 585                __field(unsigned long, writeback_index)
 586                __field(long, nr_to_write)
 587                __field(unsigned long, wrote)
 588        ),
 589
 590        TP_fast_assign(
 591                strncpy(__entry->name,
 592                        dev_name(inode_to_bdi(inode)->dev), 32);
 593                __entry->ino            = inode->i_ino;
 594                __entry->state          = inode->i_state;
 595                __entry->dirtied_when   = inode->dirtied_when;
 596                __entry->writeback_index = inode->i_mapping->writeback_index;
 597                __entry->nr_to_write    = nr_to_write;
 598                __entry->wrote          = nr_to_write - wbc->nr_to_write;
 599        ),
 600
 601        TP_printk("bdi %s: ino=%lu state=%s dirtied_when=%lu age=%lu "
 602                  "index=%lu to_write=%ld wrote=%lu",
 603                  __entry->name,
 604                  __entry->ino,
 605                  show_inode_state(__entry->state),
 606                  __entry->dirtied_when,
 607                  (jiffies - __entry->dirtied_when) / HZ,
 608                  __entry->writeback_index,
 609                  __entry->nr_to_write,
 610                  __entry->wrote
 611        )
 612);
 613
 614DEFINE_EVENT(writeback_single_inode_template, writeback_single_inode_start,
 615        TP_PROTO(struct inode *inode,
 616                 struct writeback_control *wbc,
 617                 unsigned long nr_to_write),
 618        TP_ARGS(inode, wbc, nr_to_write)
 619);
 620
 621DEFINE_EVENT(writeback_single_inode_template, writeback_single_inode,
 622        TP_PROTO(struct inode *inode,
 623                 struct writeback_control *wbc,
 624                 unsigned long nr_to_write),
 625        TP_ARGS(inode, wbc, nr_to_write)
 626);
 627
 628DECLARE_EVENT_CLASS(writeback_lazytime_template,
 629        TP_PROTO(struct inode *inode),
 630
 631        TP_ARGS(inode),
 632
 633        TP_STRUCT__entry(
 634                __field(        dev_t,  dev                     )
 635                __field(unsigned long,  ino                     )
 636                __field(unsigned long,  state                   )
 637                __field(        __u16, mode                     )
 638                __field(unsigned long, dirtied_when             )
 639        ),
 640
 641        TP_fast_assign(
 642                __entry->dev    = inode->i_sb->s_dev;
 643                __entry->ino    = inode->i_ino;
 644                __entry->state  = inode->i_state;
 645                __entry->mode   = inode->i_mode;
 646                __entry->dirtied_when = inode->dirtied_when;
 647        ),
 648
 649        TP_printk("dev %d,%d ino %lu dirtied %lu state %s mode 0%o",
 650                  MAJOR(__entry->dev), MINOR(__entry->dev),
 651                  __entry->ino, __entry->dirtied_when,
 652                  show_inode_state(__entry->state), __entry->mode)
 653);
 654
 655DEFINE_EVENT(writeback_lazytime_template, writeback_lazytime,
 656        TP_PROTO(struct inode *inode),
 657
 658        TP_ARGS(inode)
 659);
 660
 661DEFINE_EVENT(writeback_lazytime_template, writeback_lazytime_iput,
 662        TP_PROTO(struct inode *inode),
 663
 664        TP_ARGS(inode)
 665);
 666
 667DEFINE_EVENT(writeback_lazytime_template, writeback_dirty_inode_enqueue,
 668
 669        TP_PROTO(struct inode *inode),
 670
 671        TP_ARGS(inode)
 672);
 673
 674#endif /* _TRACE_WRITEBACK_H */
 675
 676/* This part must be outside protection */
 677#include <trace/define_trace.h>
 678