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_FS_FREE_SPACE, "fs_free_space") \ 46 EM( WB_REASON_FORKER_THREAD, "forker_thread") \ 47 EMe(WB_REASON_FOREIGN_FLUSH, "foreign_flush") 48 49 WB_WORK_REASON 50 51 /* 52 * Now redefine the EM() and EMe() macros to map the enums to the strings 53 * that will be printed in the output. 54 */ 55 #undef EM 56 #undef EMe 57 #define EM(a,b) { a, b }, 58 #define EMe(a,b) { a, b } 59 60 struct wb_writeback_work; 61 62 DECLARE_EVENT_CLASS(writeback_folio_template, 63 64 TP_PROTO(struct folio *folio, struct address_space *mapping), 65 66 TP_ARGS(folio, mapping), 67 68 TP_STRUCT__entry ( 69 __array(char, name, 32) 70 __field(u64, ino) 71 __field(pgoff_t, index) 72 ), 73 74 TP_fast_assign( 75 strscpy_pad(__entry->name, 76 bdi_dev_name(mapping ? inode_to_bdi(mapping->host) : 77 NULL), 32); 78 __entry->ino = (mapping && mapping->host) ? mapping->host->i_ino : 0; 79 __entry->index = folio->index; 80 ), 81 82 TP_printk("bdi %s: ino=%llu index=%lu", 83 __entry->name, 84 __entry->ino, 85 __entry->index 86 ) 87 ); 88 89 DEFINE_EVENT(writeback_folio_template, writeback_dirty_folio, 90 91 TP_PROTO(struct folio *folio, struct address_space *mapping), 92 93 TP_ARGS(folio, mapping) 94 ); 95 96 DEFINE_EVENT(writeback_folio_template, folio_wait_writeback, 97 98 TP_PROTO(struct folio *folio, struct address_space *mapping), 99 100 TP_ARGS(folio, mapping) 101 ); 102 103 DECLARE_EVENT_CLASS(writeback_dirty_inode_template, 104 105 TP_PROTO(struct inode *inode, int flags), 106 107 TP_ARGS(inode, flags), 108 109 TP_STRUCT__entry ( 110 __array(char, name, 32) 111 __field(u64, ino) 112 __field(unsigned long, state) 113 __field(unsigned long, flags) 114 ), 115 116 TP_fast_assign( 117 struct backing_dev_info *bdi = inode_to_bdi(inode); 118 119 /* may be called for files on pseudo FSes w/ unregistered bdi */ 120 strscpy_pad(__entry->name, bdi_dev_name(bdi), 32); 121 __entry->ino = inode->i_ino; 122 __entry->state = inode_state_read_once(inode); 123 __entry->flags = flags; 124 ), 125 126 TP_printk("bdi %s: ino=%llu state=%s flags=%s", 127 __entry->name, 128 __entry->ino, 129 show_inode_state(__entry->state), 130 show_inode_state(__entry->flags) 131 ) 132 ); 133 134 DEFINE_EVENT(writeback_dirty_inode_template, writeback_mark_inode_dirty, 135 136 TP_PROTO(struct inode *inode, int flags), 137 138 TP_ARGS(inode, flags) 139 ); 140 141 DEFINE_EVENT(writeback_dirty_inode_template, writeback_dirty_inode_start, 142 143 TP_PROTO(struct inode *inode, int flags), 144 145 TP_ARGS(inode, flags) 146 ); 147 148 DEFINE_EVENT(writeback_dirty_inode_template, writeback_dirty_inode, 149 150 TP_PROTO(struct inode *inode, int flags), 151 152 TP_ARGS(inode, flags) 153 ); 154 155 #ifdef CREATE_TRACE_POINTS 156 #ifdef CONFIG_CGROUP_WRITEBACK 157 158 static inline u64 __trace_wb_assign_cgroup(struct bdi_writeback *wb) 159 { 160 return cgroup_ino(wb->memcg_css->cgroup); 161 } 162 163 static inline u64 __trace_wbc_assign_cgroup(struct writeback_control *wbc) 164 { 165 if (wbc->wb) 166 return __trace_wb_assign_cgroup(wbc->wb); 167 else 168 return 1; 169 } 170 #else /* CONFIG_CGROUP_WRITEBACK */ 171 172 static inline u64 __trace_wb_assign_cgroup(struct bdi_writeback *wb) 173 { 174 return 1; 175 } 176 177 static inline u64 __trace_wbc_assign_cgroup(struct writeback_control *wbc) 178 { 179 return 1; 180 } 181 182 #endif /* CONFIG_CGROUP_WRITEBACK */ 183 #endif /* CREATE_TRACE_POINTS */ 184 185 #ifdef CONFIG_CGROUP_WRITEBACK 186 TRACE_EVENT(inode_foreign_history, 187 188 TP_PROTO(struct inode *inode, struct writeback_control *wbc, 189 unsigned int history), 190 191 TP_ARGS(inode, wbc, history), 192 193 TP_STRUCT__entry( 194 __array(char, name, 32) 195 __field(u64, ino) 196 __field(u64, cgroup_ino) 197 __field(unsigned int, history) 198 ), 199 200 TP_fast_assign( 201 strscpy_pad(__entry->name, bdi_dev_name(inode_to_bdi(inode)), 32); 202 __entry->ino = inode->i_ino; 203 __entry->cgroup_ino = __trace_wbc_assign_cgroup(wbc); 204 __entry->history = history; 205 ), 206 207 TP_printk("bdi %s: ino=%llu cgroup_ino=%llu history=0x%x", 208 __entry->name, 209 __entry->ino, 210 __entry->cgroup_ino, 211 __entry->history 212 ) 213 ); 214 215 TRACE_EVENT(inode_switch_wbs_queue, 216 217 TP_PROTO(struct bdi_writeback *old_wb, struct bdi_writeback *new_wb, 218 unsigned int count), 219 220 TP_ARGS(old_wb, new_wb, count), 221 222 TP_STRUCT__entry( 223 __array(char, name, 32) 224 __field(u64, old_cgroup_ino) 225 __field(u64, new_cgroup_ino) 226 __field(unsigned int, count) 227 ), 228 229 TP_fast_assign( 230 strscpy_pad(__entry->name, bdi_dev_name(old_wb->bdi), 32); 231 __entry->old_cgroup_ino = __trace_wb_assign_cgroup(old_wb); 232 __entry->new_cgroup_ino = __trace_wb_assign_cgroup(new_wb); 233 __entry->count = count; 234 ), 235 236 TP_printk("bdi %s: old_cgroup_ino=%llu new_cgroup_ino=%llu count=%u", 237 __entry->name, 238 __entry->old_cgroup_ino, 239 __entry->new_cgroup_ino, 240 __entry->count 241 ) 242 ); 243 244 TRACE_EVENT(inode_switch_wbs, 245 246 TP_PROTO(struct inode *inode, struct bdi_writeback *old_wb, 247 struct bdi_writeback *new_wb), 248 249 TP_ARGS(inode, old_wb, new_wb), 250 251 TP_STRUCT__entry( 252 __array(char, name, 32) 253 __field(u64, ino) 254 __field(u64, old_cgroup_ino) 255 __field(u64, new_cgroup_ino) 256 ), 257 258 TP_fast_assign( 259 strscpy_pad(__entry->name, bdi_dev_name(old_wb->bdi), 32); 260 __entry->ino = inode->i_ino; 261 __entry->old_cgroup_ino = __trace_wb_assign_cgroup(old_wb); 262 __entry->new_cgroup_ino = __trace_wb_assign_cgroup(new_wb); 263 ), 264 265 TP_printk("bdi %s: ino=%llu old_cgroup_ino=%llu new_cgroup_ino=%llu", 266 __entry->name, 267 __entry->ino, 268 __entry->old_cgroup_ino, 269 __entry->new_cgroup_ino 270 ) 271 ); 272 273 TRACE_EVENT(track_foreign_dirty, 274 275 TP_PROTO(struct folio *folio, struct bdi_writeback *wb), 276 277 TP_ARGS(folio, wb), 278 279 TP_STRUCT__entry( 280 __array(char, name, 32) 281 __field(u64, bdi_id) 282 __field(u64, ino) 283 __field(u64, cgroup_ino) 284 __field(u64, page_cgroup_ino) 285 __field(unsigned int, memcg_id) 286 ), 287 288 TP_fast_assign( 289 struct address_space *mapping = folio_mapping(folio); 290 struct inode *inode = mapping ? mapping->host : NULL; 291 292 strscpy_pad(__entry->name, bdi_dev_name(wb->bdi), 32); 293 __entry->bdi_id = wb->bdi->id; 294 __entry->ino = inode ? inode->i_ino : 0; 295 __entry->memcg_id = wb->memcg_css->id; 296 __entry->cgroup_ino = __trace_wb_assign_cgroup(wb); 297 298 rcu_read_lock(); 299 __entry->page_cgroup_ino = cgroup_ino(folio_memcg(folio)->css.cgroup); 300 rcu_read_unlock(); 301 ), 302 303 TP_printk("bdi %s[%llu]: ino=%llu memcg_id=%u cgroup_ino=%llu page_cgroup_ino=%llu", 304 __entry->name, 305 __entry->bdi_id, 306 __entry->ino, 307 __entry->memcg_id, 308 __entry->cgroup_ino, 309 __entry->page_cgroup_ino 310 ) 311 ); 312 313 TRACE_EVENT(flush_foreign, 314 315 TP_PROTO(struct bdi_writeback *wb, unsigned int frn_bdi_id, 316 unsigned int frn_memcg_id), 317 318 TP_ARGS(wb, frn_bdi_id, frn_memcg_id), 319 320 TP_STRUCT__entry( 321 __array(char, name, 32) 322 __field(u64, cgroup_ino) 323 __field(unsigned int, frn_bdi_id) 324 __field(unsigned int, frn_memcg_id) 325 ), 326 327 TP_fast_assign( 328 strscpy_pad(__entry->name, bdi_dev_name(wb->bdi), 32); 329 __entry->cgroup_ino = __trace_wb_assign_cgroup(wb); 330 __entry->frn_bdi_id = frn_bdi_id; 331 __entry->frn_memcg_id = frn_memcg_id; 332 ), 333 334 TP_printk("bdi %s: cgroup_ino=%llu frn_bdi_id=%u frn_memcg_id=%u", 335 __entry->name, 336 __entry->cgroup_ino, 337 __entry->frn_bdi_id, 338 __entry->frn_memcg_id 339 ) 340 ); 341 #endif 342 343 DECLARE_EVENT_CLASS(writeback_write_inode_template, 344 345 TP_PROTO(struct inode *inode, struct writeback_control *wbc), 346 347 TP_ARGS(inode, wbc), 348 349 TP_STRUCT__entry ( 350 __array(char, name, 32) 351 __field(u64, ino) 352 __field(u64, cgroup_ino) 353 __field(int, sync_mode) 354 ), 355 356 TP_fast_assign( 357 strscpy_pad(__entry->name, 358 bdi_dev_name(inode_to_bdi(inode)), 32); 359 __entry->ino = inode->i_ino; 360 __entry->sync_mode = wbc->sync_mode; 361 __entry->cgroup_ino = __trace_wbc_assign_cgroup(wbc); 362 ), 363 364 TP_printk("bdi %s: ino=%llu sync_mode=%d cgroup_ino=%llu", 365 __entry->name, 366 __entry->ino, 367 __entry->sync_mode, 368 __entry->cgroup_ino 369 ) 370 ); 371 372 DEFINE_EVENT(writeback_write_inode_template, writeback_write_inode_start, 373 374 TP_PROTO(struct inode *inode, struct writeback_control *wbc), 375 376 TP_ARGS(inode, wbc) 377 ); 378 379 DEFINE_EVENT(writeback_write_inode_template, writeback_write_inode, 380 381 TP_PROTO(struct inode *inode, struct writeback_control *wbc), 382 383 TP_ARGS(inode, wbc) 384 ); 385 386 DECLARE_EVENT_CLASS(writeback_work_class, 387 TP_PROTO(struct bdi_writeback *wb, struct wb_writeback_work *work), 388 TP_ARGS(wb, work), 389 TP_STRUCT__entry( 390 __array(char, name, 32) 391 __field(u64, cgroup_ino) 392 __field(long, nr_pages) 393 __field(dev_t, sb_dev) 394 __field(int, sync_mode) 395 __field(int, for_kupdate) 396 __field(int, range_cyclic) 397 __field(int, for_background) 398 __field(int, reason) 399 ), 400 TP_fast_assign( 401 strscpy_pad(__entry->name, bdi_dev_name(wb->bdi), 32); 402 __entry->nr_pages = work->nr_pages; 403 __entry->sb_dev = work->sb ? work->sb->s_dev : 0; 404 __entry->sync_mode = work->sync_mode; 405 __entry->for_kupdate = work->for_kupdate; 406 __entry->range_cyclic = work->range_cyclic; 407 __entry->for_background = work->for_background; 408 __entry->reason = work->reason; 409 __entry->cgroup_ino = __trace_wb_assign_cgroup(wb); 410 ), 411 TP_printk("bdi %s: sb_dev %d:%d nr_pages=%ld sync_mode=%d " 412 "kupdate=%d range_cyclic=%d background=%d reason=%s cgroup_ino=%llu", 413 __entry->name, 414 MAJOR(__entry->sb_dev), MINOR(__entry->sb_dev), 415 __entry->nr_pages, 416 __entry->sync_mode, 417 __entry->for_kupdate, 418 __entry->range_cyclic, 419 __entry->for_background, 420 __print_symbolic(__entry->reason, WB_WORK_REASON), 421 __entry->cgroup_ino 422 ) 423 ); 424 #define DEFINE_WRITEBACK_WORK_EVENT(name) \ 425 DEFINE_EVENT(writeback_work_class, name, \ 426 TP_PROTO(struct bdi_writeback *wb, struct wb_writeback_work *work), \ 427 TP_ARGS(wb, work)) 428 DEFINE_WRITEBACK_WORK_EVENT(writeback_queue); 429 DEFINE_WRITEBACK_WORK_EVENT(writeback_exec); 430 DEFINE_WRITEBACK_WORK_EVENT(writeback_start); 431 DEFINE_WRITEBACK_WORK_EVENT(writeback_written); 432 DEFINE_WRITEBACK_WORK_EVENT(writeback_wait); 433 434 TRACE_EVENT(writeback_pages_written, 435 TP_PROTO(long pages_written), 436 TP_ARGS(pages_written), 437 TP_STRUCT__entry( 438 __field(long, pages) 439 ), 440 TP_fast_assign( 441 __entry->pages = pages_written; 442 ), 443 TP_printk("%ld", __entry->pages) 444 ); 445 446 DECLARE_EVENT_CLASS(writeback_class, 447 TP_PROTO(struct bdi_writeback *wb), 448 TP_ARGS(wb), 449 TP_STRUCT__entry( 450 __array(char, name, 32) 451 __field(u64, cgroup_ino) 452 ), 453 TP_fast_assign( 454 strscpy_pad(__entry->name, bdi_dev_name(wb->bdi), 32); 455 __entry->cgroup_ino = __trace_wb_assign_cgroup(wb); 456 ), 457 TP_printk("bdi %s: cgroup_ino=%llu", 458 __entry->name, 459 __entry->cgroup_ino 460 ) 461 ); 462 #define DEFINE_WRITEBACK_EVENT(name) \ 463 DEFINE_EVENT(writeback_class, name, \ 464 TP_PROTO(struct bdi_writeback *wb), \ 465 TP_ARGS(wb)) 466 467 DEFINE_WRITEBACK_EVENT(writeback_wake_background); 468 469 TRACE_EVENT(writeback_bdi_register, 470 TP_PROTO(struct backing_dev_info *bdi), 471 TP_ARGS(bdi), 472 TP_STRUCT__entry( 473 __array(char, name, 32) 474 ), 475 TP_fast_assign( 476 strscpy_pad(__entry->name, bdi_dev_name(bdi), 32); 477 ), 478 TP_printk("bdi %s", 479 __entry->name 480 ) 481 ); 482 483 DECLARE_EVENT_CLASS(wbc_class, 484 TP_PROTO(struct writeback_control *wbc, struct backing_dev_info *bdi), 485 TP_ARGS(wbc, bdi), 486 TP_STRUCT__entry( 487 __array(char, name, 32) 488 __field(u64, cgroup_ino) 489 __field(long, nr_to_write) 490 __field(long, pages_skipped) 491 __field(long, range_start) 492 __field(long, range_end) 493 __field(int, sync_mode) 494 __field(int, for_kupdate) 495 __field(int, for_background) 496 __field(int, range_cyclic) 497 ), 498 499 TP_fast_assign( 500 strscpy_pad(__entry->name, bdi_dev_name(bdi), 32); 501 __entry->nr_to_write = wbc->nr_to_write; 502 __entry->pages_skipped = wbc->pages_skipped; 503 __entry->sync_mode = wbc->sync_mode; 504 __entry->for_kupdate = wbc->for_kupdate; 505 __entry->for_background = wbc->for_background; 506 __entry->range_cyclic = wbc->range_cyclic; 507 __entry->range_start = (long)wbc->range_start; 508 __entry->range_end = (long)wbc->range_end; 509 __entry->cgroup_ino = __trace_wbc_assign_cgroup(wbc); 510 ), 511 512 TP_printk("bdi %s: towrt=%ld skip=%ld mode=%d kupd=%d bgrd=%d " 513 "cyclic=%d start=0x%lx end=0x%lx cgroup_ino=%llu", 514 __entry->name, 515 __entry->nr_to_write, 516 __entry->pages_skipped, 517 __entry->sync_mode, 518 __entry->for_kupdate, 519 __entry->for_background, 520 __entry->range_cyclic, 521 __entry->range_start, 522 __entry->range_end, 523 __entry->cgroup_ino 524 ) 525 ) 526 527 #define DEFINE_WBC_EVENT(name) \ 528 DEFINE_EVENT(wbc_class, name, \ 529 TP_PROTO(struct writeback_control *wbc, struct backing_dev_info *bdi), \ 530 TP_ARGS(wbc, bdi)) 531 DEFINE_WBC_EVENT(wbc_writepage); 532 533 TRACE_EVENT(writeback_queue_io, 534 TP_PROTO(struct bdi_writeback *wb, 535 struct wb_writeback_work *work, 536 unsigned long dirtied_before, 537 int moved), 538 TP_ARGS(wb, work, dirtied_before, moved), 539 TP_STRUCT__entry( 540 __array(char, name, 32) 541 __field(u64, cgroup_ino) 542 __field(unsigned long, older) 543 __field(long, age) 544 __field(int, moved) 545 __field(int, reason) 546 ), 547 TP_fast_assign( 548 strscpy_pad(__entry->name, bdi_dev_name(wb->bdi), 32); 549 __entry->older = dirtied_before; 550 __entry->age = (jiffies - dirtied_before) * 1000 / HZ; 551 __entry->moved = moved; 552 __entry->reason = work->reason; 553 __entry->cgroup_ino = __trace_wb_assign_cgroup(wb); 554 ), 555 TP_printk("bdi %s: older=%lu age=%ld enqueue=%d reason=%s cgroup_ino=%llu", 556 __entry->name, 557 __entry->older, /* dirtied_before in jiffies */ 558 __entry->age, /* dirtied_before in relative milliseconds */ 559 __entry->moved, 560 __print_symbolic(__entry->reason, WB_WORK_REASON), 561 __entry->cgroup_ino 562 ) 563 ); 564 565 TRACE_EVENT(global_dirty_state, 566 567 TP_PROTO(unsigned long background_thresh, 568 unsigned long dirty_thresh 569 ), 570 571 TP_ARGS(background_thresh, 572 dirty_thresh 573 ), 574 575 TP_STRUCT__entry( 576 __field(unsigned long, nr_dirty) 577 __field(unsigned long, nr_writeback) 578 __field(unsigned long, background_thresh) 579 __field(unsigned long, dirty_thresh) 580 __field(unsigned long, dirty_limit) 581 __field(unsigned long, nr_dirtied) 582 __field(unsigned long, nr_written) 583 ), 584 585 TP_fast_assign( 586 __entry->nr_dirty = global_node_page_state(NR_FILE_DIRTY); 587 __entry->nr_writeback = global_node_page_state(NR_WRITEBACK); 588 __entry->nr_dirtied = global_node_page_state(NR_DIRTIED); 589 __entry->nr_written = global_node_page_state(NR_WRITTEN); 590 __entry->background_thresh = background_thresh; 591 __entry->dirty_thresh = dirty_thresh; 592 __entry->dirty_limit = global_wb_domain.dirty_limit; 593 ), 594 595 TP_printk("dirty=%lu writeback=%lu " 596 "bg_thresh=%lu thresh=%lu limit=%lu " 597 "dirtied=%lu written=%lu", 598 __entry->nr_dirty, 599 __entry->nr_writeback, 600 __entry->background_thresh, 601 __entry->dirty_thresh, 602 __entry->dirty_limit, 603 __entry->nr_dirtied, 604 __entry->nr_written 605 ) 606 ); 607 608 #define KBps(x) ((x) << (PAGE_SHIFT - 10)) 609 610 TRACE_EVENT(bdi_dirty_ratelimit, 611 612 TP_PROTO(struct bdi_writeback *wb, 613 unsigned long dirty_rate, 614 unsigned long task_ratelimit), 615 616 TP_ARGS(wb, dirty_rate, task_ratelimit), 617 618 TP_STRUCT__entry( 619 __array(char, bdi, 32) 620 __field(u64, cgroup_ino) 621 __field(unsigned long, write_bw) 622 __field(unsigned long, avg_write_bw) 623 __field(unsigned long, dirty_rate) 624 __field(unsigned long, dirty_ratelimit) 625 __field(unsigned long, task_ratelimit) 626 __field(unsigned long, balanced_dirty_ratelimit) 627 ), 628 629 TP_fast_assign( 630 strscpy_pad(__entry->bdi, bdi_dev_name(wb->bdi), 32); 631 __entry->write_bw = KBps(wb->write_bandwidth); 632 __entry->avg_write_bw = KBps(wb->avg_write_bandwidth); 633 __entry->dirty_rate = KBps(dirty_rate); 634 __entry->dirty_ratelimit = KBps(wb->dirty_ratelimit); 635 __entry->task_ratelimit = KBps(task_ratelimit); 636 __entry->balanced_dirty_ratelimit = 637 KBps(wb->balanced_dirty_ratelimit); 638 __entry->cgroup_ino = __trace_wb_assign_cgroup(wb); 639 ), 640 641 TP_printk("bdi %s: " 642 "write_bw=%lu awrite_bw=%lu dirty_rate=%lu " 643 "dirty_ratelimit=%lu task_ratelimit=%lu " 644 "balanced_dirty_ratelimit=%lu cgroup_ino=%llu", 645 __entry->bdi, 646 __entry->write_bw, /* write bandwidth */ 647 __entry->avg_write_bw, /* avg write bandwidth */ 648 __entry->dirty_rate, /* bdi dirty rate */ 649 __entry->dirty_ratelimit, /* base ratelimit */ 650 __entry->task_ratelimit, /* ratelimit with position control */ 651 __entry->balanced_dirty_ratelimit, /* the balanced ratelimit */ 652 __entry->cgroup_ino 653 ) 654 ); 655 656 TRACE_EVENT(balance_dirty_pages, 657 658 TP_PROTO(struct bdi_writeback *wb, 659 struct dirty_throttle_control *dtc, 660 unsigned long dirty_ratelimit, 661 unsigned long task_ratelimit, 662 unsigned long dirtied, 663 unsigned long period, 664 long pause, 665 unsigned long start_time), 666 667 TP_ARGS(wb, dtc, 668 dirty_ratelimit, task_ratelimit, 669 dirtied, period, pause, start_time), 670 671 TP_STRUCT__entry( 672 __array( char, bdi, 32) 673 __field(u64, cgroup_ino) 674 __field(unsigned long, limit) 675 __field(unsigned long, setpoint) 676 __field(unsigned long, dirty) 677 __field(unsigned long, wb_setpoint) 678 __field(unsigned long, wb_dirty) 679 __field(unsigned long, dirty_ratelimit) 680 __field(unsigned long, task_ratelimit) 681 __field(unsigned long, paused) 682 __field( long, pause) 683 __field(unsigned long, period) 684 __field( long, think) 685 __field(unsigned int, dirtied) 686 __field(unsigned int, dirtied_pause) 687 ), 688 689 TP_fast_assign( 690 unsigned long freerun = (dtc->thresh + dtc->bg_thresh) / 2; 691 strscpy_pad(__entry->bdi, bdi_dev_name(wb->bdi), 32); 692 693 __entry->limit = dtc->limit; 694 __entry->setpoint = (dtc->limit + freerun) / 2; 695 __entry->dirty = dtc->dirty; 696 __entry->wb_setpoint = __entry->setpoint * 697 dtc->wb_thresh / (dtc->thresh + 1); 698 __entry->wb_dirty = dtc->wb_dirty; 699 __entry->dirty_ratelimit = KBps(dirty_ratelimit); 700 __entry->task_ratelimit = KBps(task_ratelimit); 701 __entry->dirtied = dirtied; 702 __entry->dirtied_pause = current->nr_dirtied_pause; 703 __entry->think = current->dirty_paused_when == 0 ? 0 : 704 (long)(jiffies - current->dirty_paused_when) * 1000/HZ; 705 __entry->period = period * 1000 / HZ; 706 __entry->pause = pause * 1000 / HZ; 707 __entry->paused = (jiffies - start_time) * 1000 / HZ; 708 __entry->cgroup_ino = __trace_wb_assign_cgroup(wb); 709 ), 710 711 712 TP_printk("bdi %s: " 713 "limit=%lu setpoint=%lu dirty=%lu " 714 "wb_setpoint=%lu wb_dirty=%lu " 715 "dirty_ratelimit=%lu task_ratelimit=%lu " 716 "dirtied=%u dirtied_pause=%u " 717 "paused=%lu pause=%ld period=%lu think=%ld cgroup_ino=%llu", 718 __entry->bdi, 719 __entry->limit, 720 __entry->setpoint, 721 __entry->dirty, 722 __entry->wb_setpoint, 723 __entry->wb_dirty, 724 __entry->dirty_ratelimit, 725 __entry->task_ratelimit, 726 __entry->dirtied, 727 __entry->dirtied_pause, 728 __entry->paused, /* ms */ 729 __entry->pause, /* ms */ 730 __entry->period, /* ms */ 731 __entry->think, /* ms */ 732 __entry->cgroup_ino 733 ) 734 ); 735 736 TRACE_EVENT(writeback_sb_inodes_requeue, 737 738 TP_PROTO(struct inode *inode), 739 TP_ARGS(inode), 740 741 TP_STRUCT__entry( 742 __array(char, name, 32) 743 __field(u64, ino) 744 __field(u64, cgroup_ino) 745 __field(unsigned long, state) 746 __field(unsigned long, dirtied_when) 747 ), 748 749 TP_fast_assign( 750 strscpy_pad(__entry->name, 751 bdi_dev_name(inode_to_bdi(inode)), 32); 752 __entry->ino = inode->i_ino; 753 __entry->state = inode_state_read_once(inode); 754 __entry->dirtied_when = inode->dirtied_when; 755 __entry->cgroup_ino = __trace_wb_assign_cgroup(inode_to_wb(inode)); 756 ), 757 758 TP_printk("bdi %s: ino=%llu state=%s dirtied_when=%lu age=%lu cgroup_ino=%llu", 759 __entry->name, 760 __entry->ino, 761 show_inode_state(__entry->state), 762 __entry->dirtied_when, 763 (jiffies - __entry->dirtied_when) / HZ, 764 __entry->cgroup_ino 765 ) 766 ); 767 768 DECLARE_EVENT_CLASS(writeback_single_inode_template, 769 770 TP_PROTO(struct inode *inode, 771 struct writeback_control *wbc, 772 unsigned long nr_to_write 773 ), 774 775 TP_ARGS(inode, wbc, nr_to_write), 776 777 TP_STRUCT__entry( 778 __array(char, name, 32) 779 __field(u64, ino) 780 __field(u64, cgroup_ino) 781 __field(unsigned long, state) 782 __field(unsigned long, dirtied_when) 783 __field(unsigned long, writeback_index) 784 __field(unsigned long, wrote) 785 __field(long, nr_to_write) 786 ), 787 788 TP_fast_assign( 789 strscpy_pad(__entry->name, 790 bdi_dev_name(inode_to_bdi(inode)), 32); 791 __entry->ino = inode->i_ino; 792 __entry->state = inode_state_read_once(inode); 793 __entry->dirtied_when = inode->dirtied_when; 794 __entry->writeback_index = inode->i_mapping->writeback_index; 795 __entry->nr_to_write = nr_to_write; 796 __entry->wrote = nr_to_write - wbc->nr_to_write; 797 __entry->cgroup_ino = __trace_wbc_assign_cgroup(wbc); 798 ), 799 800 TP_printk("bdi %s: ino=%llu state=%s dirtied_when=%lu age=%lu " 801 "index=%lu to_write=%ld wrote=%lu cgroup_ino=%llu", 802 __entry->name, 803 __entry->ino, 804 show_inode_state(__entry->state), 805 __entry->dirtied_when, 806 (jiffies - __entry->dirtied_when) / HZ, 807 __entry->writeback_index, 808 __entry->nr_to_write, 809 __entry->wrote, 810 __entry->cgroup_ino 811 ) 812 ); 813 814 DEFINE_EVENT(writeback_single_inode_template, writeback_single_inode_start, 815 TP_PROTO(struct inode *inode, 816 struct writeback_control *wbc, 817 unsigned long nr_to_write), 818 TP_ARGS(inode, wbc, nr_to_write) 819 ); 820 821 DEFINE_EVENT(writeback_single_inode_template, writeback_single_inode, 822 TP_PROTO(struct inode *inode, 823 struct writeback_control *wbc, 824 unsigned long nr_to_write), 825 TP_ARGS(inode, wbc, nr_to_write) 826 ); 827 828 DECLARE_EVENT_CLASS(writeback_inode_template, 829 TP_PROTO(struct inode *inode), 830 831 TP_ARGS(inode), 832 833 TP_STRUCT__entry( 834 __field( u64, ino ) 835 __field(unsigned long, state ) 836 __field(unsigned long, dirtied_when ) 837 __field( dev_t, dev ) 838 __field( __u16, mode ) 839 ), 840 841 TP_fast_assign( 842 __entry->dev = inode->i_sb->s_dev; 843 __entry->ino = inode->i_ino; 844 __entry->state = inode_state_read_once(inode); 845 __entry->mode = inode->i_mode; 846 __entry->dirtied_when = inode->dirtied_when; 847 ), 848 849 TP_printk("dev %d,%d ino %llu dirtied %lu state %s mode 0%o", 850 MAJOR(__entry->dev), MINOR(__entry->dev), 851 __entry->ino, __entry->dirtied_when, 852 show_inode_state(__entry->state), __entry->mode) 853 ); 854 855 DEFINE_EVENT(writeback_inode_template, writeback_lazytime, 856 TP_PROTO(struct inode *inode), 857 858 TP_ARGS(inode) 859 ); 860 861 DEFINE_EVENT(writeback_inode_template, writeback_dirty_inode_enqueue, 862 863 TP_PROTO(struct inode *inode), 864 865 TP_ARGS(inode) 866 ); 867 868 /* 869 * Inode writeback list tracking. 870 */ 871 872 DEFINE_EVENT(writeback_inode_template, sb_mark_inode_writeback, 873 TP_PROTO(struct inode *inode), 874 TP_ARGS(inode) 875 ); 876 877 DEFINE_EVENT(writeback_inode_template, sb_clear_inode_writeback, 878 TP_PROTO(struct inode *inode), 879 TP_ARGS(inode) 880 ); 881 882 #endif /* _TRACE_WRITEBACK_H */ 883 884 /* This part must be outside protection */ 885 #include <trace/define_trace.h> 886