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_FS_FREE_SPACE,            "fs_free_space")        \
  39         EMe(WB_REASON_FORKER_THREAD,            "forker_thread")
  40
  41 WB_WORK_REASON
  42
  43 /*
  44  * Now redefine the EM() and EMe() macros to map the enums to the strings
  45  * that will be printed in the output.
  46  */
  47 #undef EM
  48 #undef EMe
  49 #define EM(a,b)         { a, b },
  50 #define EMe(a,b)        { a, b }
  51
  52 struct wb_writeback_work;
  53
  54 DECLARE_EVENT_CLASS(writeback_page_template,
  55
  56         TP_PROTO(struct page *page, struct address_space *mapping),
  57
  58         TP_ARGS(page, mapping),
  59
  60         TP_STRUCT__entry (
  61                 __array(char, name, 32)
  62                 __field(ino_t, ino)
  63                 __field(pgoff_t, index)
  64         ),
  65
  66         TP_fast_assign(
  67                 strscpy_pad(__entry->name,
  68                             bdi_dev_name(mapping ? inode_to_bdi(mapping->host) :
  69                                          NULL), 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                 (unsigned long)__entry->ino,
  77                 __entry->index
  78         )
  79 );
  80
  81 DEFINE_EVENT(writeback_page_template, writeback_dirty_page,
  82
  83         TP_PROTO(struct page *page, struct address_space *mapping),
  84
  85         TP_ARGS(page, mapping)
  86 );
  87
  88 DEFINE_EVENT(writeback_page_template, wait_on_page_writeback,
  89
  90         TP_PROTO(struct page *page, struct address_space *mapping),
  91
  92         TP_ARGS(page, mapping)
  93 );
  94
  95 DECLARE_EVENT_CLASS(writeback_dirty_inode_template,
  96
  97         TP_PROTO(struct inode *inode, int flags),
  98
  99         TP_ARGS(inode, flags),
 100
 101         TP_STRUCT__entry (
 102                 __array(char, name, 32)
 103                 __field(ino_t, ino)
 104                 __field(unsigned long, state)
 105                 __field(unsigned long, flags)
 106         ),
 107
 108         TP_fast_assign(
 109                 struct backing_dev_info *bdi = inode_to_bdi(inode);
 110
 111                 /* may be called for files on pseudo FSes w/ unregistered bdi */
 112                 strscpy_pad(__entry->name, bdi_dev_name(bdi), 32);
 113                 __entry->ino            = inode->i_ino;
 114                 __entry->state          = inode->i_state;
 115                 __entry->flags          = flags;
 116         ),
 117
 118         TP_printk("bdi %s: ino=%lu state=%s flags=%s",
 119                 __entry->name,
 120                 (unsigned long)__entry->ino,
 121                 show_inode_state(__entry->state),
 122                 show_inode_state(__entry->flags)
 123         )
 124 );
 125
 126 DEFINE_EVENT(writeback_dirty_inode_template, writeback_mark_inode_dirty,
 127
 128         TP_PROTO(struct inode *inode, int flags),
 129
 130         TP_ARGS(inode, flags)
 131 );
 132
 133 DEFINE_EVENT(writeback_dirty_inode_template, writeback_dirty_inode_start,
 134
 135         TP_PROTO(struct inode *inode, int flags),
 136
 137         TP_ARGS(inode, flags)
 138 );
 139
 140 DEFINE_EVENT(writeback_dirty_inode_template, writeback_dirty_inode,
 141
 142         TP_PROTO(struct inode *inode, int flags),
 143
 144         TP_ARGS(inode, flags)
 145 );
 146
 147 #ifdef CREATE_TRACE_POINTS
 148 #ifdef CONFIG_CGROUP_WRITEBACK
 149
 150 static inline ino_t __trace_wb_assign_cgroup(struct bdi_writeback *wb)
 151 {
 152         return cgroup_ino(wb->memcg_css->cgroup);
 153 }
 154
 155 static inline ino_t __trace_wbc_assign_cgroup(struct writeback_control *wbc)
 156 {
 157         if (wbc->wb)
 158                 return __trace_wb_assign_cgroup(wbc->wb);
 159         else
 160                 return 1;
 161 }
 162 #else   /* CONFIG_CGROUP_WRITEBACK */
 163
 164 static inline ino_t __trace_wb_assign_cgroup(struct bdi_writeback *wb)
 165 {
 166         return 1;
 167 }
 168
 169 static inline ino_t __trace_wbc_assign_cgroup(struct writeback_control *wbc)
 170 {
 171         return 1;
 172 }
 173
 174 #endif  /* CONFIG_CGROUP_WRITEBACK */
 175 #endif  /* CREATE_TRACE_POINTS */
 176
 177 #ifdef CONFIG_CGROUP_WRITEBACK
 178 TRACE_EVENT(inode_foreign_history,
 179
 180         TP_PROTO(struct inode *inode, struct writeback_control *wbc,
 181                  unsigned int history),
 182
 183         TP_ARGS(inode, wbc, history),
 184
 185         TP_STRUCT__entry(
 186                 __array(char,           name, 32)
 187                 __field(ino_t,          ino)
 188                 __field(ino_t,          cgroup_ino)
 189                 __field(unsigned int,   history)
 190         ),
 191
 192         TP_fast_assign(
 193                 strncpy(__entry->name, bdi_dev_name(inode_to_bdi(inode)), 32);
 194                 __entry->ino            = inode->i_ino;
 195                 __entry->cgroup_ino     = __trace_wbc_assign_cgroup(wbc);
 196                 __entry->history        = history;
 197         ),
 198
 199         TP_printk("bdi %s: ino=%lu cgroup_ino=%lu history=0x%x",
 200                 __entry->name,
 201                 (unsigned long)__entry->ino,
 202                 (unsigned long)__entry->cgroup_ino,
 203                 __entry->history
 204         )
 205 );
 206
 207 TRACE_EVENT(inode_switch_wbs,
 208
 209         TP_PROTO(struct inode *inode, struct bdi_writeback *old_wb,
 210                  struct bdi_writeback *new_wb),
 211
 212         TP_ARGS(inode, old_wb, new_wb),
 213
 214         TP_STRUCT__entry(
 215                 __array(char,           name, 32)
 216                 __field(ino_t,          ino)
 217                 __field(ino_t,          old_cgroup_ino)
 218                 __field(ino_t,          new_cgroup_ino)
 219         ),
 220
 221         TP_fast_assign(
 222                 strncpy(__entry->name,  bdi_dev_name(old_wb->bdi), 32);
 223                 __entry->ino            = inode->i_ino;
 224                 __entry->old_cgroup_ino = __trace_wb_assign_cgroup(old_wb);
 225                 __entry->new_cgroup_ino = __trace_wb_assign_cgroup(new_wb);
 226         ),
 227
 228         TP_printk("bdi %s: ino=%lu old_cgroup_ino=%lu new_cgroup_ino=%lu",
 229                 __entry->name,
 230                 (unsigned long)__entry->ino,
 231                 (unsigned long)__entry->old_cgroup_ino,
 232                 (unsigned long)__entry->new_cgroup_ino
 233         )
 234 );
 235
 236 TRACE_EVENT(track_foreign_dirty,
 237
 238         TP_PROTO(struct page *page, struct bdi_writeback *wb),
 239
 240         TP_ARGS(page, wb),
 241
 242         TP_STRUCT__entry(
 243                 __array(char,           name, 32)
 244                 __field(u64,            bdi_id)
 245                 __field(ino_t,          ino)
 246                 __field(unsigned int,   memcg_id)
 247                 __field(ino_t,          cgroup_ino)
 248                 __field(ino_t,          page_cgroup_ino)
 249         ),
 250
 251         TP_fast_assign(
 252                 struct address_space *mapping = page_mapping(page);
 253                 struct inode *inode = mapping ? mapping->host : NULL;
 254
 255                 strncpy(__entry->name,  bdi_dev_name(wb->bdi), 32);
 256                 __entry->bdi_id         = wb->bdi->id;
 257                 __entry->ino            = inode ? inode->i_ino : 0;
 258                 __entry->memcg_id       = wb->memcg_css->id;
 259                 __entry->cgroup_ino     = __trace_wb_assign_cgroup(wb);
 260                 __entry->page_cgroup_ino = cgroup_ino(page->mem_cgroup->css.cgroup);
 261         ),
 262
 263         TP_printk("bdi %s[%llu]: ino=%lu memcg_id=%u cgroup_ino=%lu page_cgroup_ino=%lu",
 264                 __entry->name,
 265                 __entry->bdi_id,
 266                 (unsigned long)__entry->ino,
 267                 __entry->memcg_id,
 268                 (unsigned long)__entry->cgroup_ino,
 269                 (unsigned long)__entry->page_cgroup_ino
 270         )
 271 );
 272
 273 TRACE_EVENT(flush_foreign,
 274
 275         TP_PROTO(struct bdi_writeback *wb, unsigned int frn_bdi_id,
 276                  unsigned int frn_memcg_id),
 277
 278         TP_ARGS(wb, frn_bdi_id, frn_memcg_id),
 279
 280         TP_STRUCT__entry(
 281                 __array(char,           name, 32)
 282                 __field(ino_t,          cgroup_ino)
 283                 __field(unsigned int,   frn_bdi_id)
 284                 __field(unsigned int,   frn_memcg_id)
 285         ),
 286
 287         TP_fast_assign(
 288                 strncpy(__entry->name,  bdi_dev_name(wb->bdi), 32);
 289                 __entry->cgroup_ino     = __trace_wb_assign_cgroup(wb);
 290                 __entry->frn_bdi_id     = frn_bdi_id;
 291                 __entry->frn_memcg_id   = frn_memcg_id;
 292         ),
 293
 294         TP_printk("bdi %s: cgroup_ino=%lu frn_bdi_id=%u frn_memcg_id=%u",
 295                 __entry->name,
 296                 (unsigned long)__entry->cgroup_ino,
 297                 __entry->frn_bdi_id,
 298                 __entry->frn_memcg_id
 299         )
 300 );
 301 #endif
 302
 303 DECLARE_EVENT_CLASS(writeback_write_inode_template,
 304
 305         TP_PROTO(struct inode *inode, struct writeback_control *wbc),
 306
 307         TP_ARGS(inode, wbc),
 308
 309         TP_STRUCT__entry (
 310                 __array(char, name, 32)
 311                 __field(ino_t, ino)
 312                 __field(int, sync_mode)
 313                 __field(ino_t, cgroup_ino)
 314         ),
 315
 316         TP_fast_assign(
 317                 strscpy_pad(__entry->name,
 318                             bdi_dev_name(inode_to_bdi(inode)), 32);
 319                 __entry->ino            = inode->i_ino;
 320                 __entry->sync_mode      = wbc->sync_mode;
 321                 __entry->cgroup_ino     = __trace_wbc_assign_cgroup(wbc);
 322         ),
 323
 324         TP_printk("bdi %s: ino=%lu sync_mode=%d cgroup_ino=%lu",
 325                 __entry->name,
 326                 (unsigned long)__entry->ino,
 327                 __entry->sync_mode,
 328                 (unsigned long)__entry->cgroup_ino
 329         )
 330 );
 331
 332 DEFINE_EVENT(writeback_write_inode_template, writeback_write_inode_start,
 333
 334         TP_PROTO(struct inode *inode, struct writeback_control *wbc),
 335
 336         TP_ARGS(inode, wbc)
 337 );
 338
 339 DEFINE_EVENT(writeback_write_inode_template, writeback_write_inode,
 340
 341         TP_PROTO(struct inode *inode, struct writeback_control *wbc),
 342
 343         TP_ARGS(inode, wbc)
 344 );
 345
 346 DECLARE_EVENT_CLASS(writeback_work_class,
 347         TP_PROTO(struct bdi_writeback *wb, struct wb_writeback_work *work),
 348         TP_ARGS(wb, work),
 349         TP_STRUCT__entry(
 350                 __array(char, name, 32)
 351                 __field(long, nr_pages)
 352                 __field(dev_t, sb_dev)
 353                 __field(int, sync_mode)
 354                 __field(int, for_kupdate)
 355                 __field(int, range_cyclic)
 356                 __field(int, for_background)
 357                 __field(int, reason)
 358                 __field(ino_t, cgroup_ino)
 359         ),
 360         TP_fast_assign(
 361                 strscpy_pad(__entry->name, bdi_dev_name(wb->bdi), 32);
 362                 __entry->nr_pages = work->nr_pages;
 363                 __entry->sb_dev = work->sb ? work->sb->s_dev : 0;
 364                 __entry->sync_mode = work->sync_mode;
 365                 __entry->for_kupdate = work->for_kupdate;
 366                 __entry->range_cyclic = work->range_cyclic;
 367                 __entry->for_background = work->for_background;
 368                 __entry->reason = work->reason;
 369                 __entry->cgroup_ino = __trace_wb_assign_cgroup(wb);
 370         ),
 371         TP_printk("bdi %s: sb_dev %d:%d nr_pages=%ld sync_mode=%d "
 372                   "kupdate=%d range_cyclic=%d background=%d reason=%s cgroup_ino=%lu",
 373                   __entry->name,
 374                   MAJOR(__entry->sb_dev), MINOR(__entry->sb_dev),
 375                   __entry->nr_pages,
 376                   __entry->sync_mode,
 377                   __entry->for_kupdate,
 378                   __entry->range_cyclic,
 379                   __entry->for_background,
 380                   __print_symbolic(__entry->reason, WB_WORK_REASON),
 381                   (unsigned long)__entry->cgroup_ino
 382         )
 383 );
 384 #define DEFINE_WRITEBACK_WORK_EVENT(name) \
 385 DEFINE_EVENT(writeback_work_class, name, \
 386         TP_PROTO(struct bdi_writeback *wb, struct wb_writeback_work *work), \
 387         TP_ARGS(wb, work))
 388 DEFINE_WRITEBACK_WORK_EVENT(writeback_queue);
 389 DEFINE_WRITEBACK_WORK_EVENT(writeback_exec);
 390 DEFINE_WRITEBACK_WORK_EVENT(writeback_start);
 391 DEFINE_WRITEBACK_WORK_EVENT(writeback_written);
 392 DEFINE_WRITEBACK_WORK_EVENT(writeback_wait);
 393
 394 TRACE_EVENT(writeback_pages_written,
 395         TP_PROTO(long pages_written),
 396         TP_ARGS(pages_written),
 397         TP_STRUCT__entry(
 398                 __field(long,           pages)
 399         ),
 400         TP_fast_assign(
 401                 __entry->pages          = pages_written;
 402         ),
 403         TP_printk("%ld", __entry->pages)
 404 );
 405
 406 DECLARE_EVENT_CLASS(writeback_class,
 407         TP_PROTO(struct bdi_writeback *wb),
 408         TP_ARGS(wb),
 409         TP_STRUCT__entry(
 410                 __array(char, name, 32)
 411                 __field(ino_t, cgroup_ino)
 412         ),
 413         TP_fast_assign(
 414                 strscpy_pad(__entry->name, bdi_dev_name(wb->bdi), 32);
 415                 __entry->cgroup_ino = __trace_wb_assign_cgroup(wb);
 416         ),
 417         TP_printk("bdi %s: cgroup_ino=%lu",
 418                   __entry->name,
 419                   (unsigned long)__entry->cgroup_ino
 420         )
 421 );
 422 #define DEFINE_WRITEBACK_EVENT(name) \
 423 DEFINE_EVENT(writeback_class, name, \
 424         TP_PROTO(struct bdi_writeback *wb), \
 425         TP_ARGS(wb))
 426
 427 DEFINE_WRITEBACK_EVENT(writeback_wake_background);
 428
 429 TRACE_EVENT(writeback_bdi_register,
 430         TP_PROTO(struct backing_dev_info *bdi),
 431         TP_ARGS(bdi),
 432         TP_STRUCT__entry(
 433                 __array(char, name, 32)
 434         ),
 435         TP_fast_assign(
 436                 strscpy_pad(__entry->name, bdi_dev_name(bdi), 32);
 437         ),
 438         TP_printk("bdi %s",
 439                 __entry->name
 440         )
 441 );
 442
 443 DECLARE_EVENT_CLASS(wbc_class,
 444         TP_PROTO(struct writeback_control *wbc, struct backing_dev_info *bdi),
 445         TP_ARGS(wbc, bdi),
 446         TP_STRUCT__entry(
 447                 __array(char, name, 32)
 448                 __field(long, nr_to_write)
 449                 __field(long, pages_skipped)
 450                 __field(int, sync_mode)
 451                 __field(int, for_kupdate)
 452                 __field(int, for_background)
 453                 __field(int, for_reclaim)
 454                 __field(int, range_cyclic)
 455                 __field(long, range_start)
 456                 __field(long, range_end)
 457                 __field(ino_t, cgroup_ino)
 458         ),
 459
 460         TP_fast_assign(
 461                 strscpy_pad(__entry->name, bdi_dev_name(bdi), 32);
 462                 __entry->nr_to_write    = wbc->nr_to_write;
 463                 __entry->pages_skipped  = wbc->pages_skipped;
 464                 __entry->sync_mode      = wbc->sync_mode;
 465                 __entry->for_kupdate    = wbc->for_kupdate;
 466                 __entry->for_background = wbc->for_background;
 467                 __entry->for_reclaim    = wbc->for_reclaim;
 468                 __entry->range_cyclic   = wbc->range_cyclic;
 469                 __entry->range_start    = (long)wbc->range_start;
 470                 __entry->range_end      = (long)wbc->range_end;
 471                 __entry->cgroup_ino     = __trace_wbc_assign_cgroup(wbc);
 472         ),
 473
 474         TP_printk("bdi %s: towrt=%ld skip=%ld mode=%d kupd=%d "
 475                 "bgrd=%d reclm=%d cyclic=%d "
 476                 "start=0x%lx end=0x%lx cgroup_ino=%lu",
 477                 __entry->name,
 478                 __entry->nr_to_write,
 479                 __entry->pages_skipped,
 480                 __entry->sync_mode,
 481                 __entry->for_kupdate,
 482                 __entry->for_background,
 483                 __entry->for_reclaim,
 484                 __entry->range_cyclic,
 485                 __entry->range_start,
 486                 __entry->range_end,
 487                 (unsigned long)__entry->cgroup_ino
 488         )
 489 )
 490
 491 #define DEFINE_WBC_EVENT(name) \
 492 DEFINE_EVENT(wbc_class, name, \
 493         TP_PROTO(struct writeback_control *wbc, struct backing_dev_info *bdi), \
 494         TP_ARGS(wbc, bdi))
 495 DEFINE_WBC_EVENT(wbc_writepage);
 496
 497 TRACE_EVENT(writeback_queue_io,
 498         TP_PROTO(struct bdi_writeback *wb,
 499                  struct wb_writeback_work *work,
 500                  unsigned long dirtied_before,
 501                  int moved),
 502         TP_ARGS(wb, work, dirtied_before, moved),
 503         TP_STRUCT__entry(
 504                 __array(char,           name, 32)
 505                 __field(unsigned long,  older)
 506                 __field(long,           age)
 507                 __field(int,            moved)
 508                 __field(int,            reason)
 509                 __field(ino_t,          cgroup_ino)
 510         ),
 511         TP_fast_assign(
 512                 strscpy_pad(__entry->name, bdi_dev_name(wb->bdi), 32);
 513                 __entry->older  = dirtied_before;
 514                 __entry->age    = (jiffies - dirtied_before) * 1000 / HZ;
 515                 __entry->moved  = moved;
 516                 __entry->reason = work->reason;
 517                 __entry->cgroup_ino     = __trace_wb_assign_cgroup(wb);
 518         ),
 519         TP_printk("bdi %s: older=%lu age=%ld enqueue=%d reason=%s cgroup_ino=%lu",
 520                 __entry->name,
 521                 __entry->older, /* dirtied_before in jiffies */
 522                 __entry->age,   /* dirtied_before in relative milliseconds */
 523                 __entry->moved,
 524                 __print_symbolic(__entry->reason, WB_WORK_REASON),
 525                 (unsigned long)__entry->cgroup_ino
 526         )
 527 );
 528
 529 TRACE_EVENT(global_dirty_state,
 530
 531         TP_PROTO(unsigned long background_thresh,
 532                  unsigned long dirty_thresh
 533         ),
 534
 535         TP_ARGS(background_thresh,
 536                 dirty_thresh
 537         ),
 538
 539         TP_STRUCT__entry(
 540                 __field(unsigned long,  nr_dirty)
 541                 __field(unsigned long,  nr_writeback)
 542                 __field(unsigned long,  background_thresh)
 543                 __field(unsigned long,  dirty_thresh)
 544                 __field(unsigned long,  dirty_limit)
 545                 __field(unsigned long,  nr_dirtied)
 546                 __field(unsigned long,  nr_written)
 547         ),
 548
 549         TP_fast_assign(
 550                 __entry->nr_dirty       = global_node_page_state(NR_FILE_DIRTY);
 551                 __entry->nr_writeback   = global_node_page_state(NR_WRITEBACK);
 552                 __entry->nr_dirtied     = global_node_page_state(NR_DIRTIED);
 553                 __entry->nr_written     = global_node_page_state(NR_WRITTEN);
 554                 __entry->background_thresh = background_thresh;
 555                 __entry->dirty_thresh   = dirty_thresh;
 556                 __entry->dirty_limit    = global_wb_domain.dirty_limit;
 557         ),
 558
 559         TP_printk("dirty=%lu writeback=%lu "
 560                   "bg_thresh=%lu thresh=%lu limit=%lu "
 561                   "dirtied=%lu written=%lu",
 562                   __entry->nr_dirty,
 563                   __entry->nr_writeback,
 564                   __entry->background_thresh,
 565                   __entry->dirty_thresh,
 566                   __entry->dirty_limit,
 567                   __entry->nr_dirtied,
 568                   __entry->nr_written
 569         )
 570 );
 571
 572 #define KBps(x)                 ((x) << (PAGE_SHIFT - 10))
 573
 574 TRACE_EVENT(bdi_dirty_ratelimit,
 575
 576         TP_PROTO(struct bdi_writeback *wb,
 577                  unsigned long dirty_rate,
 578                  unsigned long task_ratelimit),
 579
 580         TP_ARGS(wb, dirty_rate, task_ratelimit),
 581
 582         TP_STRUCT__entry(
 583                 __array(char,           bdi, 32)
 584                 __field(unsigned long,  write_bw)
 585                 __field(unsigned long,  avg_write_bw)
 586                 __field(unsigned long,  dirty_rate)
 587                 __field(unsigned long,  dirty_ratelimit)
 588                 __field(unsigned long,  task_ratelimit)
 589                 __field(unsigned long,  balanced_dirty_ratelimit)
 590                 __field(ino_t,          cgroup_ino)
 591         ),
 592
 593         TP_fast_assign(
 594                 strscpy_pad(__entry->bdi, bdi_dev_name(wb->bdi), 32);
 595                 __entry->write_bw       = KBps(wb->write_bandwidth);
 596                 __entry->avg_write_bw   = KBps(wb->avg_write_bandwidth);
 597                 __entry->dirty_rate     = KBps(dirty_rate);
 598                 __entry->dirty_ratelimit = KBps(wb->dirty_ratelimit);
 599                 __entry->task_ratelimit = KBps(task_ratelimit);
 600                 __entry->balanced_dirty_ratelimit =
 601                                         KBps(wb->balanced_dirty_ratelimit);
 602                 __entry->cgroup_ino     = __trace_wb_assign_cgroup(wb);
 603         ),
 604
 605         TP_printk("bdi %s: "
 606                   "write_bw=%lu awrite_bw=%lu dirty_rate=%lu "
 607                   "dirty_ratelimit=%lu task_ratelimit=%lu "
 608                   "balanced_dirty_ratelimit=%lu cgroup_ino=%lu",
 609                   __entry->bdi,
 610                   __entry->write_bw,            /* write bandwidth */
 611                   __entry->avg_write_bw,        /* avg write bandwidth */
 612                   __entry->dirty_rate,          /* bdi dirty rate */
 613                   __entry->dirty_ratelimit,     /* base ratelimit */
 614                   __entry->task_ratelimit, /* ratelimit with position control */
 615                   __entry->balanced_dirty_ratelimit, /* the balanced ratelimit */
 616                   (unsigned long)__entry->cgroup_ino
 617         )
 618 );
 619
 620 TRACE_EVENT(balance_dirty_pages,
 621
 622         TP_PROTO(struct bdi_writeback *wb,
 623                  unsigned long thresh,
 624                  unsigned long bg_thresh,
 625                  unsigned long dirty,
 626                  unsigned long bdi_thresh,
 627                  unsigned long bdi_dirty,
 628                  unsigned long dirty_ratelimit,
 629                  unsigned long task_ratelimit,
 630                  unsigned long dirtied,
 631                  unsigned long period,
 632                  long pause,
 633                  unsigned long start_time),
 634
 635         TP_ARGS(wb, thresh, bg_thresh, dirty, bdi_thresh, bdi_dirty,
 636                 dirty_ratelimit, task_ratelimit,
 637                 dirtied, period, pause, start_time),
 638
 639         TP_STRUCT__entry(
 640                 __array(         char,  bdi, 32)
 641                 __field(unsigned long,  limit)
 642                 __field(unsigned long,  setpoint)
 643                 __field(unsigned long,  dirty)
 644                 __field(unsigned long,  bdi_setpoint)
 645                 __field(unsigned long,  bdi_dirty)
 646                 __field(unsigned long,  dirty_ratelimit)
 647                 __field(unsigned long,  task_ratelimit)
 648                 __field(unsigned int,   dirtied)
 649                 __field(unsigned int,   dirtied_pause)
 650                 __field(unsigned long,  paused)
 651                 __field(         long,  pause)
 652                 __field(unsigned long,  period)
 653                 __field(         long,  think)
 654                 __field(ino_t,          cgroup_ino)
 655         ),
 656
 657         TP_fast_assign(
 658                 unsigned long freerun = (thresh + bg_thresh) / 2;
 659                 strscpy_pad(__entry->bdi, bdi_dev_name(wb->bdi), 32);
 660
 661                 __entry->limit          = global_wb_domain.dirty_limit;
 662                 __entry->setpoint       = (global_wb_domain.dirty_limit +
 663                                                 freerun) / 2;
 664                 __entry->dirty          = dirty;
 665                 __entry->bdi_setpoint   = __entry->setpoint *
 666                                                 bdi_thresh / (thresh + 1);
 667                 __entry->bdi_dirty      = bdi_dirty;
 668                 __entry->dirty_ratelimit = KBps(dirty_ratelimit);
 669                 __entry->task_ratelimit = KBps(task_ratelimit);
 670                 __entry->dirtied        = dirtied;
 671                 __entry->dirtied_pause  = current->nr_dirtied_pause;
 672                 __entry->think          = current->dirty_paused_when == 0 ? 0 :
 673                          (long)(jiffies - current->dirty_paused_when) * 1000/HZ;
 674                 __entry->period         = period * 1000 / HZ;
 675                 __entry->pause          = pause * 1000 / HZ;
 676                 __entry->paused         = (jiffies - start_time) * 1000 / HZ;
 677                 __entry->cgroup_ino     = __trace_wb_assign_cgroup(wb);
 678         ),
 679
 680
 681         TP_printk("bdi %s: "
 682                   "limit=%lu setpoint=%lu dirty=%lu "
 683                   "bdi_setpoint=%lu bdi_dirty=%lu "
 684                   "dirty_ratelimit=%lu task_ratelimit=%lu "
 685                   "dirtied=%u dirtied_pause=%u "
 686                   "paused=%lu pause=%ld period=%lu think=%ld cgroup_ino=%lu",
 687                   __entry->bdi,
 688                   __entry->limit,
 689                   __entry->setpoint,
 690                   __entry->dirty,
 691                   __entry->bdi_setpoint,
 692                   __entry->bdi_dirty,
 693                   __entry->dirty_ratelimit,
 694                   __entry->task_ratelimit,
 695                   __entry->dirtied,
 696                   __entry->dirtied_pause,
 697                   __entry->paused,      /* ms */
 698                   __entry->pause,       /* ms */
 699                   __entry->period,      /* ms */
 700                   __entry->think,       /* ms */
 701                   (unsigned long)__entry->cgroup_ino
 702           )
 703 );
 704
 705 TRACE_EVENT(writeback_sb_inodes_requeue,
 706
 707         TP_PROTO(struct inode *inode),
 708         TP_ARGS(inode),
 709
 710         TP_STRUCT__entry(
 711                 __array(char, name, 32)
 712                 __field(ino_t, ino)
 713                 __field(unsigned long, state)
 714                 __field(unsigned long, dirtied_when)
 715                 __field(ino_t, cgroup_ino)
 716         ),
 717
 718         TP_fast_assign(
 719                 strscpy_pad(__entry->name,
 720                             bdi_dev_name(inode_to_bdi(inode)), 32);
 721                 __entry->ino            = inode->i_ino;
 722                 __entry->state          = inode->i_state;
 723                 __entry->dirtied_when   = inode->dirtied_when;
 724                 __entry->cgroup_ino     = __trace_wb_assign_cgroup(inode_to_wb(inode));
 725         ),
 726
 727         TP_printk("bdi %s: ino=%lu state=%s dirtied_when=%lu age=%lu cgroup_ino=%lu",
 728                   __entry->name,
 729                   (unsigned long)__entry->ino,
 730                   show_inode_state(__entry->state),
 731                   __entry->dirtied_when,
 732                   (jiffies - __entry->dirtied_when) / HZ,
 733                   (unsigned long)__entry->cgroup_ino
 734         )
 735 );
 736
 737 DECLARE_EVENT_CLASS(writeback_congest_waited_template,
 738
 739         TP_PROTO(unsigned int usec_timeout, unsigned int usec_delayed),
 740
 741         TP_ARGS(usec_timeout, usec_delayed),
 742
 743         TP_STRUCT__entry(
 744                 __field(        unsigned int,   usec_timeout    )
 745                 __field(        unsigned int,   usec_delayed    )
 746         ),
 747
 748         TP_fast_assign(
 749                 __entry->usec_timeout   = usec_timeout;
 750                 __entry->usec_delayed   = usec_delayed;
 751         ),
 752
 753         TP_printk("usec_timeout=%u usec_delayed=%u",
 754                         __entry->usec_timeout,
 755                         __entry->usec_delayed)
 756 );
 757
 758 DEFINE_EVENT(writeback_congest_waited_template, writeback_congestion_wait,
 759
 760         TP_PROTO(unsigned int usec_timeout, unsigned int usec_delayed),
 761
 762         TP_ARGS(usec_timeout, usec_delayed)
 763 );
 764
 765 DEFINE_EVENT(writeback_congest_waited_template, writeback_wait_iff_congested,
 766
 767         TP_PROTO(unsigned int usec_timeout, unsigned int usec_delayed),
 768
 769         TP_ARGS(usec_timeout, usec_delayed)
 770 );
 771
 772 DECLARE_EVENT_CLASS(writeback_single_inode_template,
 773
 774         TP_PROTO(struct inode *inode,
 775                  struct writeback_control *wbc,
 776                  unsigned long nr_to_write
 777         ),
 778
 779         TP_ARGS(inode, wbc, nr_to_write),
 780
 781         TP_STRUCT__entry(
 782                 __array(char, name, 32)
 783                 __field(ino_t, ino)
 784                 __field(unsigned long, state)
 785                 __field(unsigned long, dirtied_when)
 786                 __field(unsigned long, writeback_index)
 787                 __field(long, nr_to_write)
 788                 __field(unsigned long, wrote)
 789                 __field(ino_t, cgroup_ino)
 790         ),
 791
 792         TP_fast_assign(
 793                 strscpy_pad(__entry->name,
 794                             bdi_dev_name(inode_to_bdi(inode)), 32);
 795                 __entry->ino            = inode->i_ino;
 796                 __entry->state          = inode->i_state;
 797                 __entry->dirtied_when   = inode->dirtied_when;
 798                 __entry->writeback_index = inode->i_mapping->writeback_index;
 799                 __entry->nr_to_write    = nr_to_write;
 800                 __entry->wrote          = nr_to_write - wbc->nr_to_write;
 801                 __entry->cgroup_ino     = __trace_wbc_assign_cgroup(wbc);
 802         ),
 803
 804         TP_printk("bdi %s: ino=%lu state=%s dirtied_when=%lu age=%lu "
 805                   "index=%lu to_write=%ld wrote=%lu cgroup_ino=%lu",
 806                   __entry->name,
 807                   (unsigned long)__entry->ino,
 808                   show_inode_state(__entry->state),
 809                   __entry->dirtied_when,
 810                   (jiffies - __entry->dirtied_when) / HZ,
 811                   __entry->writeback_index,
 812                   __entry->nr_to_write,
 813                   __entry->wrote,
 814                   (unsigned long)__entry->cgroup_ino
 815         )
 816 );
 817
 818 DEFINE_EVENT(writeback_single_inode_template, writeback_single_inode_start,
 819         TP_PROTO(struct inode *inode,
 820                  struct writeback_control *wbc,
 821                  unsigned long nr_to_write),
 822         TP_ARGS(inode, wbc, nr_to_write)
 823 );
 824
 825 DEFINE_EVENT(writeback_single_inode_template, writeback_single_inode,
 826         TP_PROTO(struct inode *inode,
 827                  struct writeback_control *wbc,
 828                  unsigned long nr_to_write),
 829         TP_ARGS(inode, wbc, nr_to_write)
 830 );
 831
 832 DECLARE_EVENT_CLASS(writeback_inode_template,
 833         TP_PROTO(struct inode *inode),
 834
 835         TP_ARGS(inode),
 836
 837         TP_STRUCT__entry(
 838                 __field(        dev_t,  dev                     )
 839                 __field(        ino_t,  ino                     )
 840                 __field(unsigned long,  state                   )
 841                 __field(        __u16, mode                     )
 842                 __field(unsigned long, dirtied_when             )
 843         ),
 844
 845         TP_fast_assign(
 846                 __entry->dev    = inode->i_sb->s_dev;
 847                 __entry->ino    = inode->i_ino;
 848                 __entry->state  = inode->i_state;
 849                 __entry->mode   = inode->i_mode;
 850                 __entry->dirtied_when = inode->dirtied_when;
 851         ),
 852
 853         TP_printk("dev %d,%d ino %lu dirtied %lu state %s mode 0%o",
 854                   MAJOR(__entry->dev), MINOR(__entry->dev),
 855                   (unsigned long)__entry->ino, __entry->dirtied_when,
 856                   show_inode_state(__entry->state), __entry->mode)
 857 );
 858
 859 DEFINE_EVENT(writeback_inode_template, writeback_lazytime,
 860         TP_PROTO(struct inode *inode),
 861
 862         TP_ARGS(inode)
 863 );
 864
 865 DEFINE_EVENT(writeback_inode_template, writeback_lazytime_iput,
 866         TP_PROTO(struct inode *inode),
 867
 868         TP_ARGS(inode)
 869 );
 870
 871 DEFINE_EVENT(writeback_inode_template, writeback_dirty_inode_enqueue,
 872
 873         TP_PROTO(struct inode *inode),
 874
 875         TP_ARGS(inode)
 876 );
 877
 878 /*
 879  * Inode writeback list tracking.
 880  */
 881
 882 DEFINE_EVENT(writeback_inode_template, sb_mark_inode_writeback,
 883         TP_PROTO(struct inode *inode),
 884         TP_ARGS(inode)
 885 );
 886
 887 DEFINE_EVENT(writeback_inode_template, sb_clear_inode_writeback,
 888         TP_PROTO(struct inode *inode),
 889         TP_ARGS(inode)
 890 );
 891
 892 #endif /* _TRACE_WRITEBACK_H */
 893
 894 /* This part must be outside protection */
 895 #include <trace/define_trace.h>