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 {I_LINKABLE, "I_LINKABLE"}, \ 25 {I_WB_SWITCH, "I_WB_SWITCH"}, \ 26 {I_OVL_INUSE, "I_OVL_INUSE"}, \ 27 {I_CREATING, "I_CREATING"}, \ 28 {I_DONTCACHE, "I_DONTCACHE"}, \ 29 {I_SYNC_QUEUED, "I_SYNC_QUEUED"}, \ 30 {I_PINNING_NETFS_WB, "I_PINNING_NETFS_WB"}, \ 31 {I_LRU_ISOLATING, "I_LRU_ISOLATING"} \ 32 ) 33 34 /* enums need to be exported to user space */ 35 #undef EM 36 #undef EMe 37 #define EM(a,b) TRACE_DEFINE_ENUM(a); 38 #define EMe(a,b) TRACE_DEFINE_ENUM(a); 39 40 #define WB_WORK_REASON \ 41 EM( WB_REASON_BACKGROUND, "background") \ 42 EM( WB_REASON_VMSCAN, "vmscan") \ 43 EM( WB_REASON_SYNC, "sync") \ 44 EM( WB_REASON_PERIODIC, "periodic") \ 45 EM( WB_REASON_LAPTOP_TIMER, "laptop_timer") \ 46 EM( WB_REASON_FS_FREE_SPACE, "fs_free_space") \ 47 EM( WB_REASON_FORKER_THREAD, "forker_thread") \ 48 EMe(WB_REASON_FOREIGN_FLUSH, "foreign_flush") 49 50 WB_WORK_REASON 51 52 /* 53 * Now redefine the EM() and EMe() macros to map the enums to the strings 54 * that will be printed in the output. 55 */ 56 #undef EM 57 #undef EMe 58 #define EM(a,b) { a, b }, 59 #define EMe(a,b) { a, b } 60 61 struct wb_writeback_work; 62 63 DECLARE_EVENT_CLASS(writeback_folio_template, 64 65 TP_PROTO(struct folio *folio, struct address_space *mapping), 66 67 TP_ARGS(folio, mapping), 68 69 TP_STRUCT__entry ( 70 __array(char, name, 32) 71 __field(ino_t, ino) 72 __field(pgoff_t, index) 73 ), 74 75 TP_fast_assign( 76 strscpy_pad(__entry->name, 77 bdi_dev_name(mapping ? inode_to_bdi(mapping->host) : 78 NULL), 32); 79 __entry->ino = (mapping && mapping->host) ? mapping->host->i_ino : 0; 80 __entry->index = folio->index; 81 ), 82 83 TP_printk("bdi %s: ino=%lu index=%lu", 84 __entry->name, 85 (unsigned long)__entry->ino, 86 __entry->index 87 ) 88 ); 89 90 DEFINE_EVENT(writeback_folio_template, writeback_dirty_folio, 91 92 TP_PROTO(struct folio *folio, struct address_space *mapping), 93 94 TP_ARGS(folio, mapping) 95 ); 96 97 DEFINE_EVENT(writeback_folio_template, folio_wait_writeback, 98 99 TP_PROTO(struct folio *folio, struct address_space *mapping), 100 101 TP_ARGS(folio, mapping) 102 ); 103 104 DECLARE_EVENT_CLASS(writeback_dirty_inode_template, 105 106 TP_PROTO(struct inode *inode, int flags), 107 108 TP_ARGS(inode, flags), 109 110 TP_STRUCT__entry ( 111 __array(char, name, 32) 112 __field(ino_t, ino) 113 __field(unsigned long, state) 114 __field(unsigned long, flags) 115 ), 116 117 TP_fast_assign( 118 struct backing_dev_info *bdi = inode_to_bdi(inode); 119 120 /* may be called for files on pseudo FSes w/ unregistered bdi */ 121 strscpy_pad(__entry->name, bdi_dev_name(bdi), 32); 122 __entry->ino = inode->i_ino; 123 __entry->state = inode->i_state; 124 __entry->flags = flags; 125 ), 126 127 TP_printk("bdi %s: ino=%lu state=%s flags=%s", 128 __entry->name, 129 (unsigned long)__entry->ino, 130 show_inode_state(__entry->state), 131 show_inode_state(__entry->flags) 132 ) 133 ); 134 135 DEFINE_EVENT(writeback_dirty_inode_template, writeback_mark_inode_dirty, 136 137 TP_PROTO(struct inode *inode, int flags), 138 139 TP_ARGS(inode, flags) 140 ); 141 142 DEFINE_EVENT(writeback_dirty_inode_template, writeback_dirty_inode_start, 143 144 TP_PROTO(struct inode *inode, int flags), 145 146 TP_ARGS(inode, flags) 147 ); 148 149 DEFINE_EVENT(writeback_dirty_inode_template, writeback_dirty_inode, 150 151 TP_PROTO(struct inode *inode, int flags), 152 153 TP_ARGS(inode, flags) 154 ); 155 156 #ifdef CREATE_TRACE_POINTS 157 #ifdef CONFIG_CGROUP_WRITEBACK 158 159 static inline ino_t __trace_wb_assign_cgroup(struct bdi_writeback *wb) 160 { 161 return cgroup_ino(wb->memcg_css->cgroup); 162 } 163 164 static inline ino_t __trace_wbc_assign_cgroup(struct writeback_control *wbc) 165 { 166 if (wbc->wb) 167 return __trace_wb_assign_cgroup(wbc->wb); 168 else 169 return 1; 170 } 171 #else /* CONFIG_CGROUP_WRITEBACK */ 172 173 static inline ino_t __trace_wb_assign_cgroup(struct bdi_writeback *wb) 174 { 175 return 1; 176 } 177 178 static inline ino_t __trace_wbc_assign_cgroup(struct writeback_control *wbc) 179 { 180 return 1; 181 } 182 183 #endif /* CONFIG_CGROUP_WRITEBACK */ 184 #endif /* CREATE_TRACE_POINTS */ 185 186 #ifdef CONFIG_CGROUP_WRITEBACK 187 TRACE_EVENT(inode_foreign_history, 188 189 TP_PROTO(struct inode *inode, struct writeback_control *wbc, 190 unsigned int history), 191 192 TP_ARGS(inode, wbc, history), 193 194 TP_STRUCT__entry( 195 __array(char, name, 32) 196 __field(ino_t, ino) 197 __field(ino_t, cgroup_ino) 198 __field(unsigned int, history) 199 ), 200 201 TP_fast_assign( 202 strscpy_pad(__entry->name, bdi_dev_name(inode_to_bdi(inode)), 32); 203 __entry->ino = inode->i_ino; 204 __entry->cgroup_ino = __trace_wbc_assign_cgroup(wbc); 205 __entry->history = history; 206 ), 207 208 TP_printk("bdi %s: ino=%lu cgroup_ino=%lu history=0x%x", 209 __entry->name, 210 (unsigned long)__entry->ino, 211 (unsigned long)__entry->cgroup_ino, 212 __entry->history 213 ) 214 ); 215 216 TRACE_EVENT(inode_switch_wbs, 217 218 TP_PROTO(struct inode *inode, struct bdi_writeback *old_wb, 219 struct bdi_writeback *new_wb), 220 221 TP_ARGS(inode, old_wb, new_wb), 222 223 TP_STRUCT__entry( 224 __array(char, name, 32) 225 __field(ino_t, ino) 226 __field(ino_t, old_cgroup_ino) 227 __field(ino_t, new_cgroup_ino) 228 ), 229 230 TP_fast_assign( 231 strscpy_pad(__entry->name, bdi_dev_name(old_wb->bdi), 32); 232 __entry->ino = inode->i_ino; 233 __entry->old_cgroup_ino = __trace_wb_assign_cgroup(old_wb); 234 __entry->new_cgroup_ino = __trace_wb_assign_cgroup(new_wb); 235 ), 236 237 TP_printk("bdi %s: ino=%lu old_cgroup_ino=%lu new_cgroup_ino=%lu", 238 __entry->name, 239 (unsigned long)__entry->ino, 240 (unsigned long)__entry->old_cgroup_ino, 241 (unsigned long)__entry->new_cgroup_ino 242 ) 243 ); 244 245 TRACE_EVENT(track_foreign_dirty, 246 247 TP_PROTO(struct folio *folio, struct bdi_writeback *wb), 248 249 TP_ARGS(folio, wb), 250 251 TP_STRUCT__entry( 252 __array(char, name, 32) 253 __field(u64, bdi_id) 254 __field(ino_t, ino) 255 __field(unsigned int, memcg_id) 256 __field(ino_t, cgroup_ino) 257 __field(ino_t, page_cgroup_ino) 258 ), 259 260 TP_fast_assign( 261 struct address_space *mapping = folio_mapping(folio); 262 struct inode *inode = mapping ? mapping->host : NULL; 263 264 strscpy_pad(__entry->name, bdi_dev_name(wb->bdi), 32); 265 __entry->bdi_id = wb->bdi->id; 266 __entry->ino = inode ? inode->i_ino : 0; 267 __entry->memcg_id = wb->memcg_css->id; 268 __entry->cgroup_ino = __trace_wb_assign_cgroup(wb); 269 __entry->page_cgroup_ino = cgroup_ino(folio_memcg(folio)->css.cgroup); 270 ), 271 272 TP_printk("bdi %s[%llu]: ino=%lu memcg_id=%u cgroup_ino=%lu page_cgroup_ino=%lu", 273 __entry->name, 274 __entry->bdi_id, 275 (unsigned long)__entry->ino, 276 __entry->memcg_id, 277 (unsigned long)__entry->cgroup_ino, 278 (unsigned long)__entry->page_cgroup_ino 279 ) 280 ); 281 282 TRACE_EVENT(flush_foreign, 283 284 TP_PROTO(struct bdi_writeback *wb, unsigned int frn_bdi_id, 285 unsigned int frn_memcg_id), 286 287 TP_ARGS(wb, frn_bdi_id, frn_memcg_id), 288 289 TP_STRUCT__entry( 290 __array(char, name, 32) 291 __field(ino_t, cgroup_ino) 292 __field(unsigned int, frn_bdi_id) 293 __field(unsigned int, frn_memcg_id) 294 ), 295 296 TP_fast_assign( 297 strscpy_pad(__entry->name, bdi_dev_name(wb->bdi), 32); 298 __entry->cgroup_ino = __trace_wb_assign_cgroup(wb); 299 __entry->frn_bdi_id = frn_bdi_id; 300 __entry->frn_memcg_id = frn_memcg_id; 301 ), 302 303 TP_printk("bdi %s: cgroup_ino=%lu frn_bdi_id=%u frn_memcg_id=%u", 304 __entry->name, 305 (unsigned long)__entry->cgroup_ino, 306 __entry->frn_bdi_id, 307 __entry->frn_memcg_id 308 ) 309 ); 310 #endif 311 312 DECLARE_EVENT_CLASS(writeback_write_inode_template, 313 314 TP_PROTO(struct inode *inode, struct writeback_control *wbc), 315 316 TP_ARGS(inode, wbc), 317 318 TP_STRUCT__entry ( 319 __array(char, name, 32) 320 __field(ino_t, ino) 321 __field(int, sync_mode) 322 __field(ino_t, cgroup_ino) 323 ), 324 325 TP_fast_assign( 326 strscpy_pad(__entry->name, 327 bdi_dev_name(inode_to_bdi(inode)), 32); 328 __entry->ino = inode->i_ino; 329 __entry->sync_mode = wbc->sync_mode; 330 __entry->cgroup_ino = __trace_wbc_assign_cgroup(wbc); 331 ), 332 333 TP_printk("bdi %s: ino=%lu sync_mode=%d cgroup_ino=%lu", 334 __entry->name, 335 (unsigned long)__entry->ino, 336 __entry->sync_mode, 337 (unsigned long)__entry->cgroup_ino 338 ) 339 ); 340 341 DEFINE_EVENT(writeback_write_inode_template, writeback_write_inode_start, 342 343 TP_PROTO(struct inode *inode, struct writeback_control *wbc), 344 345 TP_ARGS(inode, wbc) 346 ); 347 348 DEFINE_EVENT(writeback_write_inode_template, writeback_write_inode, 349 350 TP_PROTO(struct inode *inode, struct writeback_control *wbc), 351 352 TP_ARGS(inode, wbc) 353 ); 354 355 DECLARE_EVENT_CLASS(writeback_work_class, 356 TP_PROTO(struct bdi_writeback *wb, struct wb_writeback_work *work), 357 TP_ARGS(wb, work), 358 TP_STRUCT__entry( 359 __array(char, name, 32) 360 __field(long, nr_pages) 361 __field(dev_t, sb_dev) 362 __field(int, sync_mode) 363 __field(int, for_kupdate) 364 __field(int, range_cyclic) 365 __field(int, for_background) 366 __field(int, reason) 367 __field(ino_t, cgroup_ino) 368 ), 369 TP_fast_assign( 370 strscpy_pad(__entry->name, bdi_dev_name(wb->bdi), 32); 371 __entry->nr_pages = work->nr_pages; 372 __entry->sb_dev = work->sb ? work->sb->s_dev : 0; 373 __entry->sync_mode = work->sync_mode; 374 __entry->for_kupdate = work->for_kupdate; 375 __entry->range_cyclic = work->range_cyclic; 376 __entry->for_background = work->for_background; 377 __entry->reason = work->reason; 378 __entry->cgroup_ino = __trace_wb_assign_cgroup(wb); 379 ), 380 TP_printk("bdi %s: sb_dev %d:%d nr_pages=%ld sync_mode=%d " 381 "kupdate=%d range_cyclic=%d background=%d reason=%s cgroup_ino=%lu", 382 __entry->name, 383 MAJOR(__entry->sb_dev), MINOR(__entry->sb_dev), 384 __entry->nr_pages, 385 __entry->sync_mode, 386 __entry->for_kupdate, 387 __entry->range_cyclic, 388 __entry->for_background, 389 __print_symbolic(__entry->reason, WB_WORK_REASON), 390 (unsigned long)__entry->cgroup_ino 391 ) 392 ); 393 #define DEFINE_WRITEBACK_WORK_EVENT(name) \ 394 DEFINE_EVENT(writeback_work_class, name, \ 395 TP_PROTO(struct bdi_writeback *wb, struct wb_writeback_work *work), \ 396 TP_ARGS(wb, work)) 397 DEFINE_WRITEBACK_WORK_EVENT(writeback_queue); 398 DEFINE_WRITEBACK_WORK_EVENT(writeback_exec); 399 DEFINE_WRITEBACK_WORK_EVENT(writeback_start); 400 DEFINE_WRITEBACK_WORK_EVENT(writeback_written); 401 DEFINE_WRITEBACK_WORK_EVENT(writeback_wait); 402 403 TRACE_EVENT(writeback_pages_written, 404 TP_PROTO(long pages_written), 405 TP_ARGS(pages_written), 406 TP_STRUCT__entry( 407 __field(long, pages) 408 ), 409 TP_fast_assign( 410 __entry->pages = pages_written; 411 ), 412 TP_printk("%ld", __entry->pages) 413 ); 414 415 DECLARE_EVENT_CLASS(writeback_class, 416 TP_PROTO(struct bdi_writeback *wb), 417 TP_ARGS(wb), 418 TP_STRUCT__entry( 419 __array(char, name, 32) 420 __field(ino_t, cgroup_ino) 421 ), 422 TP_fast_assign( 423 strscpy_pad(__entry->name, bdi_dev_name(wb->bdi), 32); 424 __entry->cgroup_ino = __trace_wb_assign_cgroup(wb); 425 ), 426 TP_printk("bdi %s: cgroup_ino=%lu", 427 __entry->name, 428 (unsigned long)__entry->cgroup_ino 429 ) 430 ); 431 #define DEFINE_WRITEBACK_EVENT(name) \ 432 DEFINE_EVENT(writeback_class, name, \ 433 TP_PROTO(struct bdi_writeback *wb), \ 434 TP_ARGS(wb)) 435 436 DEFINE_WRITEBACK_EVENT(writeback_wake_background); 437 438 TRACE_EVENT(writeback_bdi_register, 439 TP_PROTO(struct backing_dev_info *bdi), 440 TP_ARGS(bdi), 441 TP_STRUCT__entry( 442 __array(char, name, 32) 443 ), 444 TP_fast_assign( 445 strscpy_pad(__entry->name, bdi_dev_name(bdi), 32); 446 ), 447 TP_printk("bdi %s", 448 __entry->name 449 ) 450 ); 451 452 DECLARE_EVENT_CLASS(wbc_class, 453 TP_PROTO(struct writeback_control *wbc, struct backing_dev_info *bdi), 454 TP_ARGS(wbc, bdi), 455 TP_STRUCT__entry( 456 __array(char, name, 32) 457 __field(long, nr_to_write) 458 __field(long, pages_skipped) 459 __field(int, sync_mode) 460 __field(int, for_kupdate) 461 __field(int, for_background) 462 __field(int, range_cyclic) 463 __field(long, range_start) 464 __field(long, range_end) 465 __field(ino_t, cgroup_ino) 466 ), 467 468 TP_fast_assign( 469 strscpy_pad(__entry->name, bdi_dev_name(bdi), 32); 470 __entry->nr_to_write = wbc->nr_to_write; 471 __entry->pages_skipped = wbc->pages_skipped; 472 __entry->sync_mode = wbc->sync_mode; 473 __entry->for_kupdate = wbc->for_kupdate; 474 __entry->for_background = wbc->for_background; 475 __entry->range_cyclic = wbc->range_cyclic; 476 __entry->range_start = (long)wbc->range_start; 477 __entry->range_end = (long)wbc->range_end; 478 __entry->cgroup_ino = __trace_wbc_assign_cgroup(wbc); 479 ), 480 481 TP_printk("bdi %s: towrt=%ld skip=%ld mode=%d kupd=%d bgrd=%d " 482 "cyclic=%d start=0x%lx end=0x%lx cgroup_ino=%lu", 483 __entry->name, 484 __entry->nr_to_write, 485 __entry->pages_skipped, 486 __entry->sync_mode, 487 __entry->for_kupdate, 488 __entry->for_background, 489 __entry->range_cyclic, 490 __entry->range_start, 491 __entry->range_end, 492 (unsigned long)__entry->cgroup_ino 493 ) 494 ) 495 496 #define DEFINE_WBC_EVENT(name) \ 497 DEFINE_EVENT(wbc_class, name, \ 498 TP_PROTO(struct writeback_control *wbc, struct backing_dev_info *bdi), \ 499 TP_ARGS(wbc, bdi)) 500 DEFINE_WBC_EVENT(wbc_writepage); 501 502 TRACE_EVENT(writeback_queue_io, 503 TP_PROTO(struct bdi_writeback *wb, 504 struct wb_writeback_work *work, 505 unsigned long dirtied_before, 506 int moved), 507 TP_ARGS(wb, work, dirtied_before, moved), 508 TP_STRUCT__entry( 509 __array(char, name, 32) 510 __field(unsigned long, older) 511 __field(long, age) 512 __field(int, moved) 513 __field(int, reason) 514 __field(ino_t, cgroup_ino) 515 ), 516 TP_fast_assign( 517 strscpy_pad(__entry->name, bdi_dev_name(wb->bdi), 32); 518 __entry->older = dirtied_before; 519 __entry->age = (jiffies - dirtied_before) * 1000 / HZ; 520 __entry->moved = moved; 521 __entry->reason = work->reason; 522 __entry->cgroup_ino = __trace_wb_assign_cgroup(wb); 523 ), 524 TP_printk("bdi %s: older=%lu age=%ld enqueue=%d reason=%s cgroup_ino=%lu", 525 __entry->name, 526 __entry->older, /* dirtied_before in jiffies */ 527 __entry->age, /* dirtied_before in relative milliseconds */ 528 __entry->moved, 529 __print_symbolic(__entry->reason, WB_WORK_REASON), 530 (unsigned long)__entry->cgroup_ino 531 ) 532 ); 533 534 TRACE_EVENT(global_dirty_state, 535 536 TP_PROTO(unsigned long background_thresh, 537 unsigned long dirty_thresh 538 ), 539 540 TP_ARGS(background_thresh, 541 dirty_thresh 542 ), 543 544 TP_STRUCT__entry( 545 __field(unsigned long, nr_dirty) 546 __field(unsigned long, nr_writeback) 547 __field(unsigned long, background_thresh) 548 __field(unsigned long, dirty_thresh) 549 __field(unsigned long, dirty_limit) 550 __field(unsigned long, nr_dirtied) 551 __field(unsigned long, nr_written) 552 ), 553 554 TP_fast_assign( 555 __entry->nr_dirty = global_node_page_state(NR_FILE_DIRTY); 556 __entry->nr_writeback = global_node_page_state(NR_WRITEBACK); 557 __entry->nr_dirtied = global_node_page_state(NR_DIRTIED); 558 __entry->nr_written = global_node_page_state(NR_WRITTEN); 559 __entry->background_thresh = background_thresh; 560 __entry->dirty_thresh = dirty_thresh; 561 __entry->dirty_limit = global_wb_domain.dirty_limit; 562 ), 563 564 TP_printk("dirty=%lu writeback=%lu " 565 "bg_thresh=%lu thresh=%lu limit=%lu " 566 "dirtied=%lu written=%lu", 567 __entry->nr_dirty, 568 __entry->nr_writeback, 569 __entry->background_thresh, 570 __entry->dirty_thresh, 571 __entry->dirty_limit, 572 __entry->nr_dirtied, 573 __entry->nr_written 574 ) 575 ); 576 577 #define KBps(x) ((x) << (PAGE_SHIFT - 10)) 578 579 TRACE_EVENT(bdi_dirty_ratelimit, 580 581 TP_PROTO(struct bdi_writeback *wb, 582 unsigned long dirty_rate, 583 unsigned long task_ratelimit), 584 585 TP_ARGS(wb, dirty_rate, task_ratelimit), 586 587 TP_STRUCT__entry( 588 __array(char, bdi, 32) 589 __field(unsigned long, write_bw) 590 __field(unsigned long, avg_write_bw) 591 __field(unsigned long, dirty_rate) 592 __field(unsigned long, dirty_ratelimit) 593 __field(unsigned long, task_ratelimit) 594 __field(unsigned long, balanced_dirty_ratelimit) 595 __field(ino_t, cgroup_ino) 596 ), 597 598 TP_fast_assign( 599 strscpy_pad(__entry->bdi, bdi_dev_name(wb->bdi), 32); 600 __entry->write_bw = KBps(wb->write_bandwidth); 601 __entry->avg_write_bw = KBps(wb->avg_write_bandwidth); 602 __entry->dirty_rate = KBps(dirty_rate); 603 __entry->dirty_ratelimit = KBps(wb->dirty_ratelimit); 604 __entry->task_ratelimit = KBps(task_ratelimit); 605 __entry->balanced_dirty_ratelimit = 606 KBps(wb->balanced_dirty_ratelimit); 607 __entry->cgroup_ino = __trace_wb_assign_cgroup(wb); 608 ), 609 610 TP_printk("bdi %s: " 611 "write_bw=%lu awrite_bw=%lu dirty_rate=%lu " 612 "dirty_ratelimit=%lu task_ratelimit=%lu " 613 "balanced_dirty_ratelimit=%lu cgroup_ino=%lu", 614 __entry->bdi, 615 __entry->write_bw, /* write bandwidth */ 616 __entry->avg_write_bw, /* avg write bandwidth */ 617 __entry->dirty_rate, /* bdi dirty rate */ 618 __entry->dirty_ratelimit, /* base ratelimit */ 619 __entry->task_ratelimit, /* ratelimit with position control */ 620 __entry->balanced_dirty_ratelimit, /* the balanced ratelimit */ 621 (unsigned long)__entry->cgroup_ino 622 ) 623 ); 624 625 TRACE_EVENT(balance_dirty_pages, 626 627 TP_PROTO(struct bdi_writeback *wb, 628 struct dirty_throttle_control *dtc, 629 unsigned long dirty_ratelimit, 630 unsigned long task_ratelimit, 631 unsigned long dirtied, 632 unsigned long period, 633 long pause, 634 unsigned long start_time), 635 636 TP_ARGS(wb, dtc, 637 dirty_ratelimit, task_ratelimit, 638 dirtied, period, pause, start_time), 639 640 TP_STRUCT__entry( 641 __array( char, bdi, 32) 642 __field(unsigned long, limit) 643 __field(unsigned long, setpoint) 644 __field(unsigned long, dirty) 645 __field(unsigned long, wb_setpoint) 646 __field(unsigned long, wb_dirty) 647 __field(unsigned long, dirty_ratelimit) 648 __field(unsigned long, task_ratelimit) 649 __field(unsigned int, dirtied) 650 __field(unsigned int, dirtied_pause) 651 __field(unsigned long, paused) 652 __field( long, pause) 653 __field(unsigned long, period) 654 __field( long, think) 655 __field(ino_t, cgroup_ino) 656 ), 657 658 TP_fast_assign( 659 unsigned long freerun = (dtc->thresh + dtc->bg_thresh) / 2; 660 strscpy_pad(__entry->bdi, bdi_dev_name(wb->bdi), 32); 661 662 __entry->limit = dtc->limit; 663 __entry->setpoint = (dtc->limit + freerun) / 2; 664 __entry->dirty = dtc->dirty; 665 __entry->wb_setpoint = __entry->setpoint * 666 dtc->wb_thresh / (dtc->thresh + 1); 667 __entry->wb_dirty = dtc->wb_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 "wb_setpoint=%lu wb_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->wb_setpoint, 692 __entry->wb_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_single_inode_template, 738 739 TP_PROTO(struct inode *inode, 740 struct writeback_control *wbc, 741 unsigned long nr_to_write 742 ), 743 744 TP_ARGS(inode, wbc, nr_to_write), 745 746 TP_STRUCT__entry( 747 __array(char, name, 32) 748 __field(ino_t, ino) 749 __field(unsigned long, state) 750 __field(unsigned long, dirtied_when) 751 __field(unsigned long, writeback_index) 752 __field(long, nr_to_write) 753 __field(unsigned long, wrote) 754 __field(ino_t, cgroup_ino) 755 ), 756 757 TP_fast_assign( 758 strscpy_pad(__entry->name, 759 bdi_dev_name(inode_to_bdi(inode)), 32); 760 __entry->ino = inode->i_ino; 761 __entry->state = inode->i_state; 762 __entry->dirtied_when = inode->dirtied_when; 763 __entry->writeback_index = inode->i_mapping->writeback_index; 764 __entry->nr_to_write = nr_to_write; 765 __entry->wrote = nr_to_write - wbc->nr_to_write; 766 __entry->cgroup_ino = __trace_wbc_assign_cgroup(wbc); 767 ), 768 769 TP_printk("bdi %s: ino=%lu state=%s dirtied_when=%lu age=%lu " 770 "index=%lu to_write=%ld wrote=%lu cgroup_ino=%lu", 771 __entry->name, 772 (unsigned long)__entry->ino, 773 show_inode_state(__entry->state), 774 __entry->dirtied_when, 775 (jiffies - __entry->dirtied_when) / HZ, 776 __entry->writeback_index, 777 __entry->nr_to_write, 778 __entry->wrote, 779 (unsigned long)__entry->cgroup_ino 780 ) 781 ); 782 783 DEFINE_EVENT(writeback_single_inode_template, writeback_single_inode_start, 784 TP_PROTO(struct inode *inode, 785 struct writeback_control *wbc, 786 unsigned long nr_to_write), 787 TP_ARGS(inode, wbc, nr_to_write) 788 ); 789 790 DEFINE_EVENT(writeback_single_inode_template, writeback_single_inode, 791 TP_PROTO(struct inode *inode, 792 struct writeback_control *wbc, 793 unsigned long nr_to_write), 794 TP_ARGS(inode, wbc, nr_to_write) 795 ); 796 797 DECLARE_EVENT_CLASS(writeback_inode_template, 798 TP_PROTO(struct inode *inode), 799 800 TP_ARGS(inode), 801 802 TP_STRUCT__entry( 803 __field( dev_t, dev ) 804 __field( ino_t, ino ) 805 __field(unsigned long, state ) 806 __field( __u16, mode ) 807 __field(unsigned long, dirtied_when ) 808 ), 809 810 TP_fast_assign( 811 __entry->dev = inode->i_sb->s_dev; 812 __entry->ino = inode->i_ino; 813 __entry->state = inode->i_state; 814 __entry->mode = inode->i_mode; 815 __entry->dirtied_when = inode->dirtied_when; 816 ), 817 818 TP_printk("dev %d,%d ino %lu dirtied %lu state %s mode 0%o", 819 MAJOR(__entry->dev), MINOR(__entry->dev), 820 (unsigned long)__entry->ino, __entry->dirtied_when, 821 show_inode_state(__entry->state), __entry->mode) 822 ); 823 824 DEFINE_EVENT(writeback_inode_template, writeback_lazytime, 825 TP_PROTO(struct inode *inode), 826 827 TP_ARGS(inode) 828 ); 829 830 DEFINE_EVENT(writeback_inode_template, writeback_lazytime_iput, 831 TP_PROTO(struct inode *inode), 832 833 TP_ARGS(inode) 834 ); 835 836 DEFINE_EVENT(writeback_inode_template, writeback_dirty_inode_enqueue, 837 838 TP_PROTO(struct inode *inode), 839 840 TP_ARGS(inode) 841 ); 842 843 /* 844 * Inode writeback list tracking. 845 */ 846 847 DEFINE_EVENT(writeback_inode_template, sb_mark_inode_writeback, 848 TP_PROTO(struct inode *inode), 849 TP_ARGS(inode) 850 ); 851 852 DEFINE_EVENT(writeback_inode_template, sb_clear_inode_writeback, 853 TP_PROTO(struct inode *inode), 854 TP_ARGS(inode) 855 ); 856 857 #endif /* _TRACE_WRITEBACK_H */ 858 859 /* This part must be outside protection */ 860 #include <trace/define_trace.h> 861