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