include/trace/events/writeback.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 #undef TRACE_SYSTEM
   3 #define TRACE_SYSTEM writeback
   4
   5 #if !defined(_TRACE_WRITEBACK_H) || defined(TRACE_HEADER_MULTI_READ)
   6 #define _TRACE_WRITEBACK_H
   7
   8 #include <linux/tracepoint.h>
   9 #include <linux/backing-dev.h>
  10 #include <linux/writeback.h>
  11
  12 #define show_inode_state(state)                                 \
  13         __print_flags(state, "|",                               \
  14                 {I_DIRTY_SYNC,          "I_DIRTY_SYNC"},        \
  15                 {I_DIRTY_DATASYNC,      "I_DIRTY_DATASYNC"},    \
  16                 {I_DIRTY_PAGES,         "I_DIRTY_PAGES"},       \
  17                 {I_NEW,                 "I_NEW"},               \
  18                 {I_WILL_FREE,           "I_WILL_FREE"},         \
  19                 {I_FREEING,             "I_FREEING"},           \
  20                 {I_CLEAR,               "I_CLEAR"},             \
  21                 {I_SYNC,                "I_SYNC"},              \
  22                 {I_DIRTY_TIME,          "I_DIRTY_TIME"},        \
  23                 {I_DIRTY_TIME_EXPIRED,  "I_DIRTY_TIME_EXPIRED"}, \
  24                 {I_REFERENCED,          "I_REFERENCED"}         \
  25         )
  26
  27 /* enums need to be exported to user space */
  28 #undef EM
  29 #undef EMe
  30 #define EM(a,b)         TRACE_DEFINE_ENUM(a);
  31 #define EMe(a,b)        TRACE_DEFINE_ENUM(a);
  32
  33 #define WB_WORK_REASON                                                  \
  34         EM( WB_REASON_BACKGROUND,               "background")           \
  35         EM( WB_REASON_VMSCAN,                   "vmscan")               \
  36         EM( WB_REASON_SYNC,                     "sync")                 \
  37         EM( WB_REASON_PERIODIC,                 "periodic")             \
  38         EM( WB_REASON_LAPTOP_TIMER,             "laptop_timer")         \
  39         EM( WB_REASON_FREE_MORE_MEM,            "free_more_memory")     \
  40         EM( WB_REASON_FS_FREE_SPACE,            "fs_free_space")        \
  41         EMe(WB_REASON_FORKER_THREAD,            "forker_thread")
  42
  43 WB_WORK_REASON
  44
  45 /*
  46  * Now redefine the EM() and EMe() macros to map the enums to the strings
  47  * that will be printed in the output.
  48  */
  49 #undef EM
  50 #undef EMe
  51 #define EM(a,b)         { a, b },
  52 #define EMe(a,b)        { a, b }
  53
  54 struct wb_writeback_work;
  55
  56 TRACE_EVENT(writeback_dirty_page,
  57
  58         TP_PROTO(struct page *page, struct address_space *mapping),
  59
  60         TP_ARGS(page, mapping),
  61
  62         TP_STRUCT__entry (
  63                 __array(char, name, 32)
  64                 __field(unsigned long, ino)
  65                 __field(pgoff_t, index)
  66         ),
  67
  68         TP_fast_assign(
  69                 strncpy(__entry->name,
  70                         mapping ? dev_name(inode_to_bdi(mapping->host)->dev) : "(unknown)", 32);
  71                 __entry->ino = mapping ? mapping->host->i_ino : 0;
  72                 __entry->index = page->index;
  73         ),
  74
  75         TP_printk("bdi %s: ino=%lu index=%lu",
  76                 __entry->name,
  77                 __entry->ino,
  78                 __entry->index
  79         )
  80 );
  81
  82 DECLARE_EVENT_CLASS(writeback_dirty_inode_template,
  83
  84         TP_PROTO(struct inode *inode, int flags),
  85
  86         TP_ARGS(inode, flags),
  87
  88         TP_STRUCT__entry (
  89                 __array(char, name, 32)
  90                 __field(unsigned long, ino)
  91                 __field(unsigned long, state)
  92                 __field(unsigned long, flags)
  93         ),
  94
  95         TP_fast_assign(
  96                 struct backing_dev_info *bdi = inode_to_bdi(inode);
  97
  98                 /* may be called for files on pseudo FSes w/ unregistered bdi */
  99                 strncpy(__entry->name,
 100                         bdi->dev ? dev_name(bdi->dev) : "(unknown)", 32);
 101                 __entry->ino            = inode->i_ino;
 102                 __entry->state          = inode->i_state;
 103                 __entry->flags          = flags;
 104         ),
 105
 106         TP_printk("bdi %s: ino=%lu state=%s flags=%s",
 107                 __entry->name,
 108                 __entry->ino,
 109                 show_inode_state(__entry->state),
 110                 show_inode_state(__entry->flags)
 111         )
 112 );
 113
 114 DEFINE_EVENT(writeback_dirty_inode_template, writeback_mark_inode_dirty,
 115
 116         TP_PROTO(struct inode *inode, int flags),
 117
 118         TP_ARGS(inode, flags)
 119 );
 120
 121 DEFINE_EVENT(writeback_dirty_inode_template, writeback_dirty_inode_start,
 122
 123         TP_PROTO(struct inode *inode, int flags),
 124
 125         TP_ARGS(inode, flags)
 126 );
 127
 128 DEFINE_EVENT(writeback_dirty_inode_template, writeback_dirty_inode,
 129
 130         TP_PROTO(struct inode *inode, int flags),
 131
 132         TP_ARGS(inode, flags)
 133 );
 134
 135 #ifdef CREATE_TRACE_POINTS
 136 #ifdef CONFIG_CGROUP_WRITEBACK
 137
 138 static inline unsigned int __trace_wb_assign_cgroup(struct bdi_writeback *wb)
 139 {
 140         return wb->memcg_css->cgroup->kn->id.ino;
 141 }
 142
 143 static inline unsigned int __trace_wbc_assign_cgroup(struct writeback_control *wbc)
 144 {
 145         if (wbc->wb)
 146                 return __trace_wb_assign_cgroup(wbc->wb);
 147         else
 148                 return -1U;
 149 }
 150 #else   /* CONFIG_CGROUP_WRITEBACK */
 151
 152 static inline unsigned int __trace_wb_assign_cgroup(struct bdi_writeback *wb)
 153 {
 154         return -1U;
 155 }
 156
 157 static inline unsigned int __trace_wbc_assign_cgroup(struct writeback_control *wbc)
 158 {
 159         return -1U;
 160 }
 161
 162 #endif  /* CONFIG_CGROUP_WRITEBACK */
 163 #endif  /* CREATE_TRACE_POINTS */
 164
 165 DECLARE_EVENT_CLASS(writeback_write_inode_template,
 166
 167         TP_PROTO(struct inode *inode, struct writeback_control *wbc),
 168
 169         TP_ARGS(inode, wbc),
 170
 171         TP_STRUCT__entry (
 172                 __array(char, name, 32)
 173                 __field(unsigned long, ino)
 174                 __field(int, sync_mode)
 175                 __field(unsigned int, cgroup_ino)
 176         ),
 177
 178         TP_fast_assign(
 179                 strncpy(__entry->name,
 180                         dev_name(inode_to_bdi(inode)->dev), 32);
 181                 __entry->ino            = inode->i_ino;
 182                 __entry->sync_mode      = wbc->sync_mode;
 183                 __entry->cgroup_ino     = __trace_wbc_assign_cgroup(wbc);
 184         ),
 185
 186         TP_printk("bdi %s: ino=%lu sync_mode=%d cgroup_ino=%u",
 187                 __entry->name,
 188                 __entry->ino,
 189                 __entry->sync_mode,
 190                 __entry->cgroup_ino
 191         )
 192 );
 193
 194 DEFINE_EVENT(writeback_write_inode_template, writeback_write_inode_start,
 195
 196         TP_PROTO(struct inode *inode, struct writeback_control *wbc),
 197
 198         TP_ARGS(inode, wbc)
 199 );
 200
 201 DEFINE_EVENT(writeback_write_inode_template, writeback_write_inode,
 202
 203         TP_PROTO(struct inode *inode, struct writeback_control *wbc),
 204
 205         TP_ARGS(inode, wbc)
 206 );
 207
 208 DECLARE_EVENT_CLASS(writeback_work_class,
 209         TP_PROTO(struct bdi_writeback *wb, struct wb_writeback_work *work),
 210         TP_ARGS(wb, work),
 211         TP_STRUCT__entry(
 212                 __array(char, name, 32)
 213                 __field(long, nr_pages)
 214                 __field(dev_t, sb_dev)
 215                 __field(int, sync_mode)
 216                 __field(int, for_kupdate)
 217                 __field(int, range_cyclic)
 218                 __field(int, for_background)
 219                 __field(int, reason)
 220                 __field(unsigned int, cgroup_ino)
 221         ),
 222         TP_fast_assign(
 223                 strncpy(__entry->name,
 224                         wb->bdi->dev ? dev_name(wb->bdi->dev) : "(unknown)", 32);
 225                 __entry->nr_pages = work->nr_pages;
 226                 __entry->sb_dev = work->sb ? work->sb->s_dev : 0;
 227                 __entry->sync_mode = work->sync_mode;
 228                 __entry->for_kupdate = work->for_kupdate;
 229                 __entry->range_cyclic = work->range_cyclic;
 230                 __entry->for_background = work->for_background;
 231                 __entry->reason = work->reason;
 232                 __entry->cgroup_ino = __trace_wb_assign_cgroup(wb);
 233         ),
 234         TP_printk("bdi %s: sb_dev %d:%d nr_pages=%ld sync_mode=%d "
 235                   "kupdate=%d range_cyclic=%d background=%d reason=%s cgroup_ino=%u",
 236                   __entry->name,
 237                   MAJOR(__entry->sb_dev), MINOR(__entry->sb_dev),
 238                   __entry->nr_pages,
 239                   __entry->sync_mode,
 240                   __entry->for_kupdate,
 241                   __entry->range_cyclic,
 242                   __entry->for_background,
 243                   __print_symbolic(__entry->reason, WB_WORK_REASON),
 244                   __entry->cgroup_ino
 245         )
 246 );
 247 #define DEFINE_WRITEBACK_WORK_EVENT(name) \
 248 DEFINE_EVENT(writeback_work_class, name, \
 249         TP_PROTO(struct bdi_writeback *wb, struct wb_writeback_work *work), \
 250         TP_ARGS(wb, work))
 251 DEFINE_WRITEBACK_WORK_EVENT(writeback_queue);
 252 DEFINE_WRITEBACK_WORK_EVENT(writeback_exec);
 253 DEFINE_WRITEBACK_WORK_EVENT(writeback_start);
 254 DEFINE_WRITEBACK_WORK_EVENT(writeback_written);
 255 DEFINE_WRITEBACK_WORK_EVENT(writeback_wait);
 256
 257 TRACE_EVENT(writeback_pages_written,
 258         TP_PROTO(long pages_written),
 259         TP_ARGS(pages_written),
 260         TP_STRUCT__entry(
 261                 __field(long,           pages)
 262         ),
 263         TP_fast_assign(
 264                 __entry->pages          = pages_written;
 265         ),
 266         TP_printk("%ld", __entry->pages)
 267 );
 268
 269 DECLARE_EVENT_CLASS(writeback_class,
 270         TP_PROTO(struct bdi_writeback *wb),
 271         TP_ARGS(wb),
 272         TP_STRUCT__entry(
 273                 __array(char, name, 32)
 274                 __field(unsigned int, cgroup_ino)
 275         ),
 276         TP_fast_assign(
 277                 strncpy(__entry->name, dev_name(wb->bdi->dev), 32);
 278                 __entry->cgroup_ino = __trace_wb_assign_cgroup(wb);
 279         ),
 280         TP_printk("bdi %s: cgroup_ino=%u",
 281                   __entry->name,
 282                   __entry->cgroup_ino
 283         )
 284 );
 285 #define DEFINE_WRITEBACK_EVENT(name) \
 286 DEFINE_EVENT(writeback_class, name, \
 287         TP_PROTO(struct bdi_writeback *wb), \
 288         TP_ARGS(wb))
 289
 290 DEFINE_WRITEBACK_EVENT(writeback_wake_background);
 291
 292 TRACE_EVENT(writeback_bdi_register,
 293         TP_PROTO(struct backing_dev_info *bdi),
 294         TP_ARGS(bdi),
 295         TP_STRUCT__entry(
 296                 __array(char, name, 32)
 297         ),
 298         TP_fast_assign(
 299                 strncpy(__entry->name, dev_name(bdi->dev), 32);
 300         ),
 301         TP_printk("bdi %s",
 302                 __entry->name
 303         )
 304 );
 305
 306 DECLARE_EVENT_CLASS(wbc_class,
 307         TP_PROTO(struct writeback_control *wbc, struct backing_dev_info *bdi),
 308         TP_ARGS(wbc, bdi),
 309         TP_STRUCT__entry(
 310                 __array(char, name, 32)
 311                 __field(long, nr_to_write)
 312                 __field(long, pages_skipped)
 313                 __field(int, sync_mode)
 314                 __field(int, for_kupdate)
 315                 __field(int, for_background)
 316                 __field(int, for_reclaim)
 317                 __field(int, range_cyclic)
 318                 __field(long, range_start)
 319                 __field(long, range_end)
 320                 __field(unsigned int, cgroup_ino)
 321         ),
 322
 323         TP_fast_assign(
 324                 strncpy(__entry->name, dev_name(bdi->dev), 32);
 325                 __entry->nr_to_write    = wbc->nr_to_write;
 326                 __entry->pages_skipped  = wbc->pages_skipped;
 327                 __entry->sync_mode      = wbc->sync_mode;
 328                 __entry->for_kupdate    = wbc->for_kupdate;
 329                 __entry->for_background = wbc->for_background;
 330                 __entry->for_reclaim    = wbc->for_reclaim;
 331                 __entry->range_cyclic   = wbc->range_cyclic;
 332                 __entry->range_start    = (long)wbc->range_start;
 333                 __entry->range_end      = (long)wbc->range_end;
 334                 __entry->cgroup_ino     = __trace_wbc_assign_cgroup(wbc);
 335         ),
 336
 337         TP_printk("bdi %s: towrt=%ld skip=%ld mode=%d kupd=%d "
 338                 "bgrd=%d reclm=%d cyclic=%d "
 339                 "start=0x%lx end=0x%lx cgroup_ino=%u",
 340                 __entry->name,
 341                 __entry->nr_to_write,
 342                 __entry->pages_skipped,
 343                 __entry->sync_mode,
 344                 __entry->for_kupdate,
 345                 __entry->for_background,
 346                 __entry->for_reclaim,
 347                 __entry->range_cyclic,
 348                 __entry->range_start,
 349                 __entry->range_end,
 350                 __entry->cgroup_ino
 351         )
 352 )
 353
 354 #define DEFINE_WBC_EVENT(name) \
 355 DEFINE_EVENT(wbc_class, name, \
 356         TP_PROTO(struct writeback_control *wbc, struct backing_dev_info *bdi), \
 357         TP_ARGS(wbc, bdi))
 358 DEFINE_WBC_EVENT(wbc_writepage);
 359
 360 TRACE_EVENT(writeback_queue_io,
 361         TP_PROTO(struct bdi_writeback *wb,
 362                  struct wb_writeback_work *work,
 363                  int moved),
 364         TP_ARGS(wb, work, moved),
 365         TP_STRUCT__entry(
 366                 __array(char,           name, 32)
 367                 __field(unsigned long,  older)
 368                 __field(long,           age)
 369                 __field(int,            moved)
 370                 __field(int,            reason)
 371                 __field(unsigned int,   cgroup_ino)
 372         ),
 373         TP_fast_assign(
 374                 unsigned long *older_than_this = work->older_than_this;
 375                 strncpy(__entry->name, dev_name(wb->bdi->dev), 32);
 376                 __entry->older  = older_than_this ?  *older_than_this : 0;
 377                 __entry->age    = older_than_this ?
 378                                   (jiffies - *older_than_this) * 1000 / HZ : -1;
 379                 __entry->moved  = moved;
 380                 __entry->reason = work->reason;
 381                 __entry->cgroup_ino     = __trace_wb_assign_cgroup(wb);
 382         ),
 383         TP_printk("bdi %s: older=%lu age=%ld enqueue=%d reason=%s cgroup_ino=%u",
 384                 __entry->name,
 385                 __entry->older, /* older_than_this in jiffies */
 386                 __entry->age,   /* older_than_this in relative milliseconds */
 387                 __entry->moved,
 388                 __print_symbolic(__entry->reason, WB_WORK_REASON),
 389                 __entry->cgroup_ino
 390         )
 391 );
 392
 393 TRACE_EVENT(global_dirty_state,
 394
 395         TP_PROTO(unsigned long background_thresh,
 396                  unsigned long dirty_thresh
 397         ),
 398
 399         TP_ARGS(background_thresh,
 400                 dirty_thresh
 401         ),
 402
 403         TP_STRUCT__entry(
 404                 __field(unsigned long,  nr_dirty)
 405                 __field(unsigned long,  nr_writeback)
 406                 __field(unsigned long,  nr_unstable)
 407                 __field(unsigned long,  background_thresh)
 408                 __field(unsigned long,  dirty_thresh)
 409                 __field(unsigned long,  dirty_limit)
 410                 __field(unsigned long,  nr_dirtied)
 411                 __field(unsigned long,  nr_written)
 412         ),
 413
 414         TP_fast_assign(
 415                 __entry->nr_dirty       = global_node_page_state(NR_FILE_DIRTY);
 416                 __entry->nr_writeback   = global_node_page_state(NR_WRITEBACK);
 417                 __entry->nr_unstable    = global_node_page_state(NR_UNSTABLE_NFS);
 418                 __entry->nr_dirtied     = global_node_page_state(NR_DIRTIED);
 419                 __entry->nr_written     = global_node_page_state(NR_WRITTEN);
 420                 __entry->background_thresh = background_thresh;
 421                 __entry->dirty_thresh   = dirty_thresh;
 422                 __entry->dirty_limit    = global_wb_domain.dirty_limit;
 423         ),
 424
 425         TP_printk("dirty=%lu writeback=%lu unstable=%lu "
 426                   "bg_thresh=%lu thresh=%lu limit=%lu "
 427                   "dirtied=%lu written=%lu",
 428                   __entry->nr_dirty,
 429                   __entry->nr_writeback,
 430                   __entry->nr_unstable,
 431                   __entry->background_thresh,
 432                   __entry->dirty_thresh,
 433                   __entry->dirty_limit,
 434                   __entry->nr_dirtied,
 435                   __entry->nr_written
 436         )
 437 );
 438
 439 #define KBps(x)                 ((x) << (PAGE_SHIFT - 10))
 440
 441 TRACE_EVENT(bdi_dirty_ratelimit,
 442
 443         TP_PROTO(struct bdi_writeback *wb,
 444                  unsigned long dirty_rate,
 445                  unsigned long task_ratelimit),
 446
 447         TP_ARGS(wb, dirty_rate, task_ratelimit),
 448
 449         TP_STRUCT__entry(
 450                 __array(char,           bdi, 32)
 451                 __field(unsigned long,  write_bw)
 452                 __field(unsigned long,  avg_write_bw)
 453                 __field(unsigned long,  dirty_rate)
 454                 __field(unsigned long,  dirty_ratelimit)
 455                 __field(unsigned long,  task_ratelimit)
 456                 __field(unsigned long,  balanced_dirty_ratelimit)
 457                 __field(unsigned int,   cgroup_ino)
 458         ),
 459
 460         TP_fast_assign(
 461                 strlcpy(__entry->bdi, dev_name(wb->bdi->dev), 32);
 462                 __entry->write_bw       = KBps(wb->write_bandwidth);
 463                 __entry->avg_write_bw   = KBps(wb->avg_write_bandwidth);
 464                 __entry->dirty_rate     = KBps(dirty_rate);
 465                 __entry->dirty_ratelimit = KBps(wb->dirty_ratelimit);
 466                 __entry->task_ratelimit = KBps(task_ratelimit);
 467                 __entry->balanced_dirty_ratelimit =
 468                                         KBps(wb->balanced_dirty_ratelimit);
 469                 __entry->cgroup_ino     = __trace_wb_assign_cgroup(wb);
 470         ),
 471
 472         TP_printk("bdi %s: "
 473                   "write_bw=%lu awrite_bw=%lu dirty_rate=%lu "
 474                   "dirty_ratelimit=%lu task_ratelimit=%lu "
 475                   "balanced_dirty_ratelimit=%lu cgroup_ino=%u",
 476                   __entry->bdi,
 477                   __entry->write_bw,            /* write bandwidth */
 478                   __entry->avg_write_bw,        /* avg write bandwidth */
 479                   __entry->dirty_rate,          /* bdi dirty rate */
 480                   __entry->dirty_ratelimit,     /* base ratelimit */
 481                   __entry->task_ratelimit, /* ratelimit with position control */
 482                   __entry->balanced_dirty_ratelimit, /* the balanced ratelimit */
 483                   __entry->cgroup_ino
 484         )
 485 );
 486
 487 TRACE_EVENT(balance_dirty_pages,
 488
 489         TP_PROTO(struct bdi_writeback *wb,
 490                  unsigned long thresh,
 491                  unsigned long bg_thresh,
 492                  unsigned long dirty,
 493                  unsigned long bdi_thresh,
 494                  unsigned long bdi_dirty,
 495                  unsigned long dirty_ratelimit,
 496                  unsigned long task_ratelimit,
 497                  unsigned long dirtied,
 498                  unsigned long period,
 499                  long pause,
 500                  unsigned long start_time),
 501
 502         TP_ARGS(wb, thresh, bg_thresh, dirty, bdi_thresh, bdi_dirty,
 503                 dirty_ratelimit, task_ratelimit,
 504                 dirtied, period, pause, start_time),
 505
 506         TP_STRUCT__entry(
 507                 __array(         char,  bdi, 32)
 508                 __field(unsigned long,  limit)
 509                 __field(unsigned long,  setpoint)
 510                 __field(unsigned long,  dirty)
 511                 __field(unsigned long,  bdi_setpoint)
 512                 __field(unsigned long,  bdi_dirty)
 513                 __field(unsigned long,  dirty_ratelimit)
 514                 __field(unsigned long,  task_ratelimit)
 515                 __field(unsigned int,   dirtied)
 516                 __field(unsigned int,   dirtied_pause)
 517                 __field(unsigned long,  paused)
 518                 __field(         long,  pause)
 519                 __field(unsigned long,  period)
 520                 __field(         long,  think)
 521                 __field(unsigned int,   cgroup_ino)
 522         ),
 523
 524         TP_fast_assign(
 525                 unsigned long freerun = (thresh + bg_thresh) / 2;
 526                 strlcpy(__entry->bdi, dev_name(wb->bdi->dev), 32);
 527
 528                 __entry->limit          = global_wb_domain.dirty_limit;
 529                 __entry->setpoint       = (global_wb_domain.dirty_limit +
 530                                                 freerun) / 2;
 531                 __entry->dirty          = dirty;
 532                 __entry->bdi_setpoint   = __entry->setpoint *
 533                                                 bdi_thresh / (thresh + 1);
 534                 __entry->bdi_dirty      = bdi_dirty;
 535                 __entry->dirty_ratelimit = KBps(dirty_ratelimit);
 536                 __entry->task_ratelimit = KBps(task_ratelimit);
 537                 __entry->dirtied        = dirtied;
 538                 __entry->dirtied_pause  = current->nr_dirtied_pause;
 539                 __entry->think          = current->dirty_paused_when == 0 ? 0 :
 540                          (long)(jiffies - current->dirty_paused_when) * 1000/HZ;
 541                 __entry->period         = period * 1000 / HZ;
 542                 __entry->pause          = pause * 1000 / HZ;
 543                 __entry->paused         = (jiffies - start_time) * 1000 / HZ;
 544                 __entry->cgroup_ino     = __trace_wb_assign_cgroup(wb);
 545         ),
 546
 547
 548         TP_printk("bdi %s: "
 549                   "limit=%lu setpoint=%lu dirty=%lu "
 550                   "bdi_setpoint=%lu bdi_dirty=%lu "
 551                   "dirty_ratelimit=%lu task_ratelimit=%lu "
 552                   "dirtied=%u dirtied_pause=%u "
 553                   "paused=%lu pause=%ld period=%lu think=%ld cgroup_ino=%u",
 554                   __entry->bdi,
 555                   __entry->limit,
 556                   __entry->setpoint,
 557                   __entry->dirty,
 558                   __entry->bdi_setpoint,
 559                   __entry->bdi_dirty,
 560                   __entry->dirty_ratelimit,
 561                   __entry->task_ratelimit,
 562                   __entry->dirtied,
 563                   __entry->dirtied_pause,
 564                   __entry->paused,      /* ms */
 565                   __entry->pause,       /* ms */
 566                   __entry->period,      /* ms */
 567                   __entry->think,       /* ms */
 568                   __entry->cgroup_ino
 569           )
 570 );
 571
 572 TRACE_EVENT(writeback_sb_inodes_requeue,
 573
 574         TP_PROTO(struct inode *inode),
 575         TP_ARGS(inode),
 576
 577         TP_STRUCT__entry(
 578                 __array(char, name, 32)
 579                 __field(unsigned long, ino)
 580                 __field(unsigned long, state)
 581                 __field(unsigned long, dirtied_when)
 582                 __field(unsigned int, cgroup_ino)
 583         ),
 584
 585         TP_fast_assign(
 586                 strncpy(__entry->name,
 587                         dev_name(inode_to_bdi(inode)->dev), 32);
 588                 __entry->ino            = inode->i_ino;
 589                 __entry->state          = inode->i_state;
 590                 __entry->dirtied_when   = inode->dirtied_when;
 591                 __entry->cgroup_ino     = __trace_wb_assign_cgroup(inode_to_wb(inode));
 592         ),
 593
 594         TP_printk("bdi %s: ino=%lu state=%s dirtied_when=%lu age=%lu cgroup_ino=%u",
 595                   __entry->name,
 596                   __entry->ino,
 597                   show_inode_state(__entry->state),
 598                   __entry->dirtied_when,
 599                   (jiffies - __entry->dirtied_when) / HZ,
 600                   __entry->cgroup_ino
 601         )
 602 );
 603
 604 DECLARE_EVENT_CLASS(writeback_congest_waited_template,
 605
 606         TP_PROTO(unsigned int usec_timeout, unsigned int usec_delayed),
 607
 608         TP_ARGS(usec_timeout, usec_delayed),
 609
 610         TP_STRUCT__entry(
 611                 __field(        unsigned int,   usec_timeout    )
 612                 __field(        unsigned int,   usec_delayed    )
 613         ),
 614
 615         TP_fast_assign(
 616                 __entry->usec_timeout   = usec_timeout;
 617                 __entry->usec_delayed   = usec_delayed;
 618         ),
 619
 620         TP_printk("usec_timeout=%u usec_delayed=%u",
 621                         __entry->usec_timeout,
 622                         __entry->usec_delayed)
 623 );
 624
 625 DEFINE_EVENT(writeback_congest_waited_template, writeback_congestion_wait,
 626
 627         TP_PROTO(unsigned int usec_timeout, unsigned int usec_delayed),
 628
 629         TP_ARGS(usec_timeout, usec_delayed)
 630 );
 631
 632 DEFINE_EVENT(writeback_congest_waited_template, writeback_wait_iff_congested,
 633
 634         TP_PROTO(unsigned int usec_timeout, unsigned int usec_delayed),
 635
 636         TP_ARGS(usec_timeout, usec_delayed)
 637 );
 638
 639 DECLARE_EVENT_CLASS(writeback_single_inode_template,
 640
 641         TP_PROTO(struct inode *inode,
 642                  struct writeback_control *wbc,
 643                  unsigned long nr_to_write
 644         ),
 645
 646         TP_ARGS(inode, wbc, nr_to_write),
 647
 648         TP_STRUCT__entry(
 649                 __array(char, name, 32)
 650                 __field(unsigned long, ino)
 651                 __field(unsigned long, state)
 652                 __field(unsigned long, dirtied_when)
 653                 __field(unsigned long, writeback_index)
 654                 __field(long, nr_to_write)
 655                 __field(unsigned long, wrote)
 656                 __field(unsigned int, cgroup_ino)
 657         ),
 658
 659         TP_fast_assign(
 660                 strncpy(__entry->name,
 661                         dev_name(inode_to_bdi(inode)->dev), 32);
 662                 __entry->ino            = inode->i_ino;
 663                 __entry->state          = inode->i_state;
 664                 __entry->dirtied_when   = inode->dirtied_when;
 665                 __entry->writeback_index = inode->i_mapping->writeback_index;
 666                 __entry->nr_to_write    = nr_to_write;
 667                 __entry->wrote          = nr_to_write - wbc->nr_to_write;
 668                 __entry->cgroup_ino     = __trace_wbc_assign_cgroup(wbc);
 669         ),
 670
 671         TP_printk("bdi %s: ino=%lu state=%s dirtied_when=%lu age=%lu "
 672                   "index=%lu to_write=%ld wrote=%lu cgroup_ino=%u",
 673                   __entry->name,
 674                   __entry->ino,
 675                   show_inode_state(__entry->state),
 676                   __entry->dirtied_when,
 677                   (jiffies - __entry->dirtied_when) / HZ,
 678                   __entry->writeback_index,
 679                   __entry->nr_to_write,
 680                   __entry->wrote,
 681                   __entry->cgroup_ino
 682         )
 683 );
 684
 685 DEFINE_EVENT(writeback_single_inode_template, writeback_single_inode_start,
 686         TP_PROTO(struct inode *inode,
 687                  struct writeback_control *wbc,
 688                  unsigned long nr_to_write),
 689         TP_ARGS(inode, wbc, nr_to_write)
 690 );
 691
 692 DEFINE_EVENT(writeback_single_inode_template, writeback_single_inode,
 693         TP_PROTO(struct inode *inode,
 694                  struct writeback_control *wbc,
 695                  unsigned long nr_to_write),
 696         TP_ARGS(inode, wbc, nr_to_write)
 697 );
 698
 699 DECLARE_EVENT_CLASS(writeback_inode_template,
 700         TP_PROTO(struct inode *inode),
 701
 702         TP_ARGS(inode),
 703
 704         TP_STRUCT__entry(
 705                 __field(        dev_t,  dev                     )
 706                 __field(unsigned long,  ino                     )
 707                 __field(unsigned long,  state                   )
 708                 __field(        __u16, mode                     )
 709                 __field(unsigned long, dirtied_when             )
 710         ),
 711
 712         TP_fast_assign(
 713                 __entry->dev    = inode->i_sb->s_dev;
 714                 __entry->ino    = inode->i_ino;
 715                 __entry->state  = inode->i_state;
 716                 __entry->mode   = inode->i_mode;
 717                 __entry->dirtied_when = inode->dirtied_when;
 718         ),
 719
 720         TP_printk("dev %d,%d ino %lu dirtied %lu state %s mode 0%o",
 721                   MAJOR(__entry->dev), MINOR(__entry->dev),
 722                   __entry->ino, __entry->dirtied_when,
 723                   show_inode_state(__entry->state), __entry->mode)
 724 );
 725
 726 DEFINE_EVENT(writeback_inode_template, writeback_lazytime,
 727         TP_PROTO(struct inode *inode),
 728
 729         TP_ARGS(inode)
 730 );
 731
 732 DEFINE_EVENT(writeback_inode_template, writeback_lazytime_iput,
 733         TP_PROTO(struct inode *inode),
 734
 735         TP_ARGS(inode)
 736 );
 737
 738 DEFINE_EVENT(writeback_inode_template, writeback_dirty_inode_enqueue,
 739
 740         TP_PROTO(struct inode *inode),
 741
 742         TP_ARGS(inode)
 743 );
 744
 745 /*
 746  * Inode writeback list tracking.
 747  */
 748
 749 DEFINE_EVENT(writeback_inode_template, sb_mark_inode_writeback,
 750         TP_PROTO(struct inode *inode),
 751         TP_ARGS(inode)
 752 );
 753
 754 DEFINE_EVENT(writeback_inode_template, sb_clear_inode_writeback,
 755         TP_PROTO(struct inode *inode),
 756         TP_ARGS(inode)
 757 );
 758
 759 #endif /* _TRACE_WRITEBACK_H */
 760
 761 /* This part must be outside protection */
 762 #include <trace/define_trace.h>