1 /* SPDX-License-Identifier: GPL-2.0 */ 2 #undef TRACE_SYSTEM 3 #define TRACE_SYSTEM writeback 4 5 #if !defined(_TRACE_WRITEBACK_H) || defined(TRACE_HEADER_MULTI_READ) 6 #define _TRACE_WRITEBACK_H 7 8 #include <linux/tracepoint.h> 9 #include <linux/backing-dev.h> 10 #include <linux/writeback.h> 11 12 #define show_inode_state(state) \ 13 __print_flags(state, "|", \ 14 {I_DIRTY_SYNC, "I_DIRTY_SYNC"}, \ 15 {I_DIRTY_DATASYNC, "I_DIRTY_DATASYNC"}, \ 16 {I_DIRTY_PAGES, "I_DIRTY_PAGES"}, \ 17 {I_NEW, "I_NEW"}, \ 18 {I_WILL_FREE, "I_WILL_FREE"}, \ 19 {I_FREEING, "I_FREEING"}, \ 20 {I_CLEAR, "I_CLEAR"}, \ 21 {I_SYNC, "I_SYNC"}, \ 22 {I_DIRTY_TIME, "I_DIRTY_TIME"}, \ 23 {I_DIRTY_TIME_EXPIRED, "I_DIRTY_TIME_EXPIRED"}, \ 24 {I_REFERENCED, "I_REFERENCED"} \ 25 ) 26 27 /* enums need to be exported to user space */ 28 #undef EM 29 #undef EMe 30 #define EM(a,b) TRACE_DEFINE_ENUM(a); 31 #define EMe(a,b) TRACE_DEFINE_ENUM(a); 32 33 #define WB_WORK_REASON \ 34 EM( WB_REASON_BACKGROUND, "background") \ 35 EM( WB_REASON_VMSCAN, "vmscan") \ 36 EM( WB_REASON_SYNC, "sync") \ 37 EM( WB_REASON_PERIODIC, "periodic") \ 38 EM( WB_REASON_LAPTOP_TIMER, "laptop_timer") \ 39 EM( WB_REASON_FREE_MORE_MEM, "free_more_memory") \ 40 EM( WB_REASON_FS_FREE_SPACE, "fs_free_space") \ 41 EMe(WB_REASON_FORKER_THREAD, "forker_thread") 42 43 WB_WORK_REASON 44 45 /* 46 * Now redefine the EM() and EMe() macros to map the enums to the strings 47 * that will be printed in the output. 48 */ 49 #undef EM 50 #undef EMe 51 #define EM(a,b) { a, b }, 52 #define EMe(a,b) { a, b } 53 54 struct wb_writeback_work; 55 56 DECLARE_EVENT_CLASS(writeback_page_template, 57 58 TP_PROTO(struct page *page, struct address_space *mapping), 59 60 TP_ARGS(page, mapping), 61 62 TP_STRUCT__entry ( 63 __array(char, name, 32) 64 __field(unsigned long, ino) 65 __field(pgoff_t, index) 66 ), 67 68 TP_fast_assign( 69 strncpy(__entry->name, 70 mapping ? dev_name(inode_to_bdi(mapping->host)->dev) : "(unknown)", 32); 71 __entry->ino = mapping ? mapping->host->i_ino : 0; 72 __entry->index = page->index; 73 ), 74 75 TP_printk("bdi %s: ino=%lu index=%lu", 76 __entry->name, 77 __entry->ino, 78 __entry->index 79 ) 80 ); 81 82 DEFINE_EVENT(writeback_page_template, writeback_dirty_page, 83 84 TP_PROTO(struct page *page, struct address_space *mapping), 85 86 TP_ARGS(page, mapping) 87 ); 88 89 DEFINE_EVENT(writeback_page_template, wait_on_page_writeback, 90 91 TP_PROTO(struct page *page, struct address_space *mapping), 92 93 TP_ARGS(page, mapping) 94 ); 95 96 DECLARE_EVENT_CLASS(writeback_dirty_inode_template, 97 98 TP_PROTO(struct inode *inode, int flags), 99 100 TP_ARGS(inode, flags), 101 102 TP_STRUCT__entry ( 103 __array(char, name, 32) 104 __field(unsigned long, ino) 105 __field(unsigned long, state) 106 __field(unsigned long, flags) 107 ), 108 109 TP_fast_assign( 110 struct backing_dev_info *bdi = inode_to_bdi(inode); 111 112 /* may be called for files on pseudo FSes w/ unregistered bdi */ 113 strncpy(__entry->name, 114 bdi->dev ? dev_name(bdi->dev) : "(unknown)", 32); 115 __entry->ino = inode->i_ino; 116 __entry->state = inode->i_state; 117 __entry->flags = flags; 118 ), 119 120 TP_printk("bdi %s: ino=%lu state=%s flags=%s", 121 __entry->name, 122 __entry->ino, 123 show_inode_state(__entry->state), 124 show_inode_state(__entry->flags) 125 ) 126 ); 127 128 DEFINE_EVENT(writeback_dirty_inode_template, writeback_mark_inode_dirty, 129 130 TP_PROTO(struct inode *inode, int flags), 131 132 TP_ARGS(inode, flags) 133 ); 134 135 DEFINE_EVENT(writeback_dirty_inode_template, writeback_dirty_inode_start, 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, 143 144 TP_PROTO(struct inode *inode, int flags), 145 146 TP_ARGS(inode, flags) 147 ); 148 149 #ifdef CREATE_TRACE_POINTS 150 #ifdef CONFIG_CGROUP_WRITEBACK 151 152 static inline unsigned int __trace_wb_assign_cgroup(struct bdi_writeback *wb) 153 { 154 return wb->memcg_css->cgroup->kn->id.ino; 155 } 156 157 static inline unsigned int __trace_wbc_assign_cgroup(struct writeback_control *wbc) 158 { 159 if (wbc->wb) 160 return __trace_wb_assign_cgroup(wbc->wb); 161 else 162 return -1U; 163 } 164 #else /* CONFIG_CGROUP_WRITEBACK */ 165 166 static inline unsigned int __trace_wb_assign_cgroup(struct bdi_writeback *wb) 167 { 168 return -1U; 169 } 170 171 static inline unsigned int __trace_wbc_assign_cgroup(struct writeback_control *wbc) 172 { 173 return -1U; 174 } 175 176 #endif /* CONFIG_CGROUP_WRITEBACK */ 177 #endif /* CREATE_TRACE_POINTS */ 178 179 #ifdef CONFIG_CGROUP_WRITEBACK 180 TRACE_EVENT(inode_foreign_history, 181 182 TP_PROTO(struct inode *inode, struct writeback_control *wbc, 183 unsigned int history), 184 185 TP_ARGS(inode, wbc, history), 186 187 TP_STRUCT__entry( 188 __array(char, name, 32) 189 __field(unsigned long, ino) 190 __field(unsigned int, cgroup_ino) 191 __field(unsigned int, history) 192 ), 193 194 TP_fast_assign( 195 strncpy(__entry->name, dev_name(inode_to_bdi(inode)->dev), 32); 196 __entry->ino = inode->i_ino; 197 __entry->cgroup_ino = __trace_wbc_assign_cgroup(wbc); 198 __entry->history = history; 199 ), 200 201 TP_printk("bdi %s: ino=%lu cgroup_ino=%u history=0x%x", 202 __entry->name, 203 __entry->ino, 204 __entry->cgroup_ino, 205 __entry->history 206 ) 207 ); 208 209 TRACE_EVENT(inode_switch_wbs, 210 211 TP_PROTO(struct inode *inode, struct bdi_writeback *old_wb, 212 struct bdi_writeback *new_wb), 213 214 TP_ARGS(inode, old_wb, new_wb), 215 216 TP_STRUCT__entry( 217 __array(char, name, 32) 218 __field(unsigned long, ino) 219 __field(unsigned int, old_cgroup_ino) 220 __field(unsigned int, new_cgroup_ino) 221 ), 222 223 TP_fast_assign( 224 strncpy(__entry->name, dev_name(old_wb->bdi->dev), 32); 225 __entry->ino = inode->i_ino; 226 __entry->old_cgroup_ino = __trace_wb_assign_cgroup(old_wb); 227 __entry->new_cgroup_ino = __trace_wb_assign_cgroup(new_wb); 228 ), 229 230 TP_printk("bdi %s: ino=%lu old_cgroup_ino=%u new_cgroup_ino=%u", 231 __entry->name, 232 __entry->ino, 233 __entry->old_cgroup_ino, 234 __entry->new_cgroup_ino 235 ) 236 ); 237 238 TRACE_EVENT(track_foreign_dirty, 239 240 TP_PROTO(struct page *page, struct bdi_writeback *wb), 241 242 TP_ARGS(page, wb), 243 244 TP_STRUCT__entry( 245 __array(char, name, 32) 246 __field(u64, bdi_id) 247 __field(unsigned long, ino) 248 __field(unsigned int, memcg_id) 249 __field(unsigned int, cgroup_ino) 250 __field(unsigned int, page_cgroup_ino) 251 ), 252 253 TP_fast_assign( 254 strncpy(__entry->name, dev_name(wb->bdi->dev), 32); 255 __entry->bdi_id = wb->bdi->id; 256 __entry->ino = page->mapping->host->i_ino; 257 __entry->memcg_id = wb->memcg_css->id; 258 __entry->cgroup_ino = __trace_wb_assign_cgroup(wb); 259 __entry->page_cgroup_ino = page->mem_cgroup->css.cgroup->kn->id.ino; 260 ), 261 262 TP_printk("bdi %s[%llu]: ino=%lu memcg_id=%u cgroup_ino=%u page_cgroup_ino=%u", 263 __entry->name, 264 __entry->bdi_id, 265 __entry->ino, 266 __entry->memcg_id, 267 __entry->cgroup_ino, 268 __entry->page_cgroup_ino 269 ) 270 ); 271 272 TRACE_EVENT(flush_foreign, 273 274 TP_PROTO(struct bdi_writeback *wb, unsigned int frn_bdi_id, 275 unsigned int frn_memcg_id), 276 277 TP_ARGS(wb, frn_bdi_id, frn_memcg_id), 278 279 TP_STRUCT__entry( 280 __array(char, name, 32) 281 __field(unsigned int, cgroup_ino) 282 __field(unsigned int, frn_bdi_id) 283 __field(unsigned int, frn_memcg_id) 284 ), 285 286 TP_fast_assign( 287 strncpy(__entry->name, dev_name(wb->bdi->dev), 32); 288 __entry->cgroup_ino = __trace_wb_assign_cgroup(wb); 289 __entry->frn_bdi_id = frn_bdi_id; 290 __entry->frn_memcg_id = frn_memcg_id; 291 ), 292 293 TP_printk("bdi %s: cgroup_ino=%u frn_bdi_id=%u frn_memcg_id=%u", 294 __entry->name, 295 __entry->cgroup_ino, 296 __entry->frn_bdi_id, 297 __entry->frn_memcg_id 298 ) 299 ); 300 #endif 301 302 DECLARE_EVENT_CLASS(writeback_write_inode_template, 303 304 TP_PROTO(struct inode *inode, struct writeback_control *wbc), 305 306 TP_ARGS(inode, wbc), 307 308 TP_STRUCT__entry ( 309 __array(char, name, 32) 310 __field(unsigned long, ino) 311 __field(int, sync_mode) 312 __field(unsigned int, cgroup_ino) 313 ), 314 315 TP_fast_assign( 316 strncpy(__entry->name, 317 dev_name(inode_to_bdi(inode)->dev), 32); 318 __entry->ino = inode->i_ino; 319 __entry->sync_mode = wbc->sync_mode; 320 __entry->cgroup_ino = __trace_wbc_assign_cgroup(wbc); 321 ), 322 323 TP_printk("bdi %s: ino=%lu sync_mode=%d cgroup_ino=%u", 324 __entry->name, 325 __entry->ino, 326 __entry->sync_mode, 327 __entry->cgroup_ino 328 ) 329 ); 330 331 DEFINE_EVENT(writeback_write_inode_template, writeback_write_inode_start, 332 333 TP_PROTO(struct inode *inode, struct writeback_control *wbc), 334 335 TP_ARGS(inode, wbc) 336 ); 337 338 DEFINE_EVENT(writeback_write_inode_template, writeback_write_inode, 339 340 TP_PROTO(struct inode *inode, struct writeback_control *wbc), 341 342 TP_ARGS(inode, wbc) 343 ); 344 345 DECLARE_EVENT_CLASS(writeback_work_class, 346 TP_PROTO(struct bdi_writeback *wb, struct wb_writeback_work *work), 347 TP_ARGS(wb, work), 348 TP_STRUCT__entry( 349 __array(char, name, 32) 350 __field(long, nr_pages) 351 __field(dev_t, sb_dev) 352 __field(int, sync_mode) 353 __field(int, for_kupdate) 354 __field(int, range_cyclic) 355 __field(int, for_background) 356 __field(int, reason) 357 __field(unsigned int, cgroup_ino) 358 ), 359 TP_fast_assign( 360 strncpy(__entry->name, 361 wb->bdi->dev ? dev_name(wb->bdi->dev) : "(unknown)", 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=%u", 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 __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(unsigned int, cgroup_ino) 412 ), 413 TP_fast_assign( 414 strncpy(__entry->name, dev_name(wb->bdi->dev), 32); 415 __entry->cgroup_ino = __trace_wb_assign_cgroup(wb); 416 ), 417 TP_printk("bdi %s: cgroup_ino=%u", 418 __entry->name, 419 __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 strncpy(__entry->name, dev_name(bdi->dev), 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(unsigned int, cgroup_ino) 458 ), 459 460 TP_fast_assign( 461 strncpy(__entry->name, dev_name(bdi->dev), 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=%u", 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 __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 int moved), 501 TP_ARGS(wb, work, moved), 502 TP_STRUCT__entry( 503 __array(char, name, 32) 504 __field(unsigned long, older) 505 __field(long, age) 506 __field(int, moved) 507 __field(int, reason) 508 __field(unsigned int, cgroup_ino) 509 ), 510 TP_fast_assign( 511 unsigned long *older_than_this = work->older_than_this; 512 strncpy(__entry->name, dev_name(wb->bdi->dev), 32); 513 __entry->older = older_than_this ? *older_than_this : 0; 514 __entry->age = older_than_this ? 515 (jiffies - *older_than_this) * 1000 / HZ : -1; 516 __entry->moved = moved; 517 __entry->reason = work->reason; 518 __entry->cgroup_ino = __trace_wb_assign_cgroup(wb); 519 ), 520 TP_printk("bdi %s: older=%lu age=%ld enqueue=%d reason=%s cgroup_ino=%u", 521 __entry->name, 522 __entry->older, /* older_than_this in jiffies */ 523 __entry->age, /* older_than_this in relative milliseconds */ 524 __entry->moved, 525 __print_symbolic(__entry->reason, WB_WORK_REASON), 526 __entry->cgroup_ino 527 ) 528 ); 529 530 TRACE_EVENT(global_dirty_state, 531 532 TP_PROTO(unsigned long background_thresh, 533 unsigned long dirty_thresh 534 ), 535 536 TP_ARGS(background_thresh, 537 dirty_thresh 538 ), 539 540 TP_STRUCT__entry( 541 __field(unsigned long, nr_dirty) 542 __field(unsigned long, nr_writeback) 543 __field(unsigned long, nr_unstable) 544 __field(unsigned long, background_thresh) 545 __field(unsigned long, dirty_thresh) 546 __field(unsigned long, dirty_limit) 547 __field(unsigned long, nr_dirtied) 548 __field(unsigned long, nr_written) 549 ), 550 551 TP_fast_assign( 552 __entry->nr_dirty = global_node_page_state(NR_FILE_DIRTY); 553 __entry->nr_writeback = global_node_page_state(NR_WRITEBACK); 554 __entry->nr_unstable = global_node_page_state(NR_UNSTABLE_NFS); 555 __entry->nr_dirtied = global_node_page_state(NR_DIRTIED); 556 __entry->nr_written = global_node_page_state(NR_WRITTEN); 557 __entry->background_thresh = background_thresh; 558 __entry->dirty_thresh = dirty_thresh; 559 __entry->dirty_limit = global_wb_domain.dirty_limit; 560 ), 561 562 TP_printk("dirty=%lu writeback=%lu unstable=%lu " 563 "bg_thresh=%lu thresh=%lu limit=%lu " 564 "dirtied=%lu written=%lu", 565 __entry->nr_dirty, 566 __entry->nr_writeback, 567 __entry->nr_unstable, 568 __entry->background_thresh, 569 __entry->dirty_thresh, 570 __entry->dirty_limit, 571 __entry->nr_dirtied, 572 __entry->nr_written 573 ) 574 ); 575 576 #define KBps(x) ((x) << (PAGE_SHIFT - 10)) 577 578 TRACE_EVENT(bdi_dirty_ratelimit, 579 580 TP_PROTO(struct bdi_writeback *wb, 581 unsigned long dirty_rate, 582 unsigned long task_ratelimit), 583 584 TP_ARGS(wb, dirty_rate, task_ratelimit), 585 586 TP_STRUCT__entry( 587 __array(char, bdi, 32) 588 __field(unsigned long, write_bw) 589 __field(unsigned long, avg_write_bw) 590 __field(unsigned long, dirty_rate) 591 __field(unsigned long, dirty_ratelimit) 592 __field(unsigned long, task_ratelimit) 593 __field(unsigned long, balanced_dirty_ratelimit) 594 __field(unsigned int, cgroup_ino) 595 ), 596 597 TP_fast_assign( 598 strlcpy(__entry->bdi, dev_name(wb->bdi->dev), 32); 599 __entry->write_bw = KBps(wb->write_bandwidth); 600 __entry->avg_write_bw = KBps(wb->avg_write_bandwidth); 601 __entry->dirty_rate = KBps(dirty_rate); 602 __entry->dirty_ratelimit = KBps(wb->dirty_ratelimit); 603 __entry->task_ratelimit = KBps(task_ratelimit); 604 __entry->balanced_dirty_ratelimit = 605 KBps(wb->balanced_dirty_ratelimit); 606 __entry->cgroup_ino = __trace_wb_assign_cgroup(wb); 607 ), 608 609 TP_printk("bdi %s: " 610 "write_bw=%lu awrite_bw=%lu dirty_rate=%lu " 611 "dirty_ratelimit=%lu task_ratelimit=%lu " 612 "balanced_dirty_ratelimit=%lu cgroup_ino=%u", 613 __entry->bdi, 614 __entry->write_bw, /* write bandwidth */ 615 __entry->avg_write_bw, /* avg write bandwidth */ 616 __entry->dirty_rate, /* bdi dirty rate */ 617 __entry->dirty_ratelimit, /* base ratelimit */ 618 __entry->task_ratelimit, /* ratelimit with position control */ 619 __entry->balanced_dirty_ratelimit, /* the balanced ratelimit */ 620 __entry->cgroup_ino 621 ) 622 ); 623 624 TRACE_EVENT(balance_dirty_pages, 625 626 TP_PROTO(struct bdi_writeback *wb, 627 unsigned long thresh, 628 unsigned long bg_thresh, 629 unsigned long dirty, 630 unsigned long bdi_thresh, 631 unsigned long bdi_dirty, 632 unsigned long dirty_ratelimit, 633 unsigned long task_ratelimit, 634 unsigned long dirtied, 635 unsigned long period, 636 long pause, 637 unsigned long start_time), 638 639 TP_ARGS(wb, thresh, bg_thresh, dirty, bdi_thresh, bdi_dirty, 640 dirty_ratelimit, task_ratelimit, 641 dirtied, period, pause, start_time), 642 643 TP_STRUCT__entry( 644 __array( char, bdi, 32) 645 __field(unsigned long, limit) 646 __field(unsigned long, setpoint) 647 __field(unsigned long, dirty) 648 __field(unsigned long, bdi_setpoint) 649 __field(unsigned long, bdi_dirty) 650 __field(unsigned long, dirty_ratelimit) 651 __field(unsigned long, task_ratelimit) 652 __field(unsigned int, dirtied) 653 __field(unsigned int, dirtied_pause) 654 __field(unsigned long, paused) 655 __field( long, pause) 656 __field(unsigned long, period) 657 __field( long, think) 658 __field(unsigned int, cgroup_ino) 659 ), 660 661 TP_fast_assign( 662 unsigned long freerun = (thresh + bg_thresh) / 2; 663 strlcpy(__entry->bdi, dev_name(wb->bdi->dev), 32); 664 665 __entry->limit = global_wb_domain.dirty_limit; 666 __entry->setpoint = (global_wb_domain.dirty_limit + 667 freerun) / 2; 668 __entry->dirty = dirty; 669 __entry->bdi_setpoint = __entry->setpoint * 670 bdi_thresh / (thresh + 1); 671 __entry->bdi_dirty = bdi_dirty; 672 __entry->dirty_ratelimit = KBps(dirty_ratelimit); 673 __entry->task_ratelimit = KBps(task_ratelimit); 674 __entry->dirtied = dirtied; 675 __entry->dirtied_pause = current->nr_dirtied_pause; 676 __entry->think = current->dirty_paused_when == 0 ? 0 : 677 (long)(jiffies - current->dirty_paused_when) * 1000/HZ; 678 __entry->period = period * 1000 / HZ; 679 __entry->pause = pause * 1000 / HZ; 680 __entry->paused = (jiffies - start_time) * 1000 / HZ; 681 __entry->cgroup_ino = __trace_wb_assign_cgroup(wb); 682 ), 683 684 685 TP_printk("bdi %s: " 686 "limit=%lu setpoint=%lu dirty=%lu " 687 "bdi_setpoint=%lu bdi_dirty=%lu " 688 "dirty_ratelimit=%lu task_ratelimit=%lu " 689 "dirtied=%u dirtied_pause=%u " 690 "paused=%lu pause=%ld period=%lu think=%ld cgroup_ino=%u", 691 __entry->bdi, 692 __entry->limit, 693 __entry->setpoint, 694 __entry->dirty, 695 __entry->bdi_setpoint, 696 __entry->bdi_dirty, 697 __entry->dirty_ratelimit, 698 __entry->task_ratelimit, 699 __entry->dirtied, 700 __entry->dirtied_pause, 701 __entry->paused, /* ms */ 702 __entry->pause, /* ms */ 703 __entry->period, /* ms */ 704 __entry->think, /* ms */ 705 __entry->cgroup_ino 706 ) 707 ); 708 709 TRACE_EVENT(writeback_sb_inodes_requeue, 710 711 TP_PROTO(struct inode *inode), 712 TP_ARGS(inode), 713 714 TP_STRUCT__entry( 715 __array(char, name, 32) 716 __field(unsigned long, ino) 717 __field(unsigned long, state) 718 __field(unsigned long, dirtied_when) 719 __field(unsigned int, cgroup_ino) 720 ), 721 722 TP_fast_assign( 723 strncpy(__entry->name, 724 dev_name(inode_to_bdi(inode)->dev), 32); 725 __entry->ino = inode->i_ino; 726 __entry->state = inode->i_state; 727 __entry->dirtied_when = inode->dirtied_when; 728 __entry->cgroup_ino = __trace_wb_assign_cgroup(inode_to_wb(inode)); 729 ), 730 731 TP_printk("bdi %s: ino=%lu state=%s dirtied_when=%lu age=%lu cgroup_ino=%u", 732 __entry->name, 733 __entry->ino, 734 show_inode_state(__entry->state), 735 __entry->dirtied_when, 736 (jiffies - __entry->dirtied_when) / HZ, 737 __entry->cgroup_ino 738 ) 739 ); 740 741 DECLARE_EVENT_CLASS(writeback_congest_waited_template, 742 743 TP_PROTO(unsigned int usec_timeout, unsigned int usec_delayed), 744 745 TP_ARGS(usec_timeout, usec_delayed), 746 747 TP_STRUCT__entry( 748 __field( unsigned int, usec_timeout ) 749 __field( unsigned int, usec_delayed ) 750 ), 751 752 TP_fast_assign( 753 __entry->usec_timeout = usec_timeout; 754 __entry->usec_delayed = usec_delayed; 755 ), 756 757 TP_printk("usec_timeout=%u usec_delayed=%u", 758 __entry->usec_timeout, 759 __entry->usec_delayed) 760 ); 761 762 DEFINE_EVENT(writeback_congest_waited_template, writeback_congestion_wait, 763 764 TP_PROTO(unsigned int usec_timeout, unsigned int usec_delayed), 765 766 TP_ARGS(usec_timeout, usec_delayed) 767 ); 768 769 DEFINE_EVENT(writeback_congest_waited_template, writeback_wait_iff_congested, 770 771 TP_PROTO(unsigned int usec_timeout, unsigned int usec_delayed), 772 773 TP_ARGS(usec_timeout, usec_delayed) 774 ); 775 776 DECLARE_EVENT_CLASS(writeback_single_inode_template, 777 778 TP_PROTO(struct inode *inode, 779 struct writeback_control *wbc, 780 unsigned long nr_to_write 781 ), 782 783 TP_ARGS(inode, wbc, nr_to_write), 784 785 TP_STRUCT__entry( 786 __array(char, name, 32) 787 __field(unsigned long, ino) 788 __field(unsigned long, state) 789 __field(unsigned long, dirtied_when) 790 __field(unsigned long, writeback_index) 791 __field(long, nr_to_write) 792 __field(unsigned long, wrote) 793 __field(unsigned int, cgroup_ino) 794 ), 795 796 TP_fast_assign( 797 strncpy(__entry->name, 798 dev_name(inode_to_bdi(inode)->dev), 32); 799 __entry->ino = inode->i_ino; 800 __entry->state = inode->i_state; 801 __entry->dirtied_when = inode->dirtied_when; 802 __entry->writeback_index = inode->i_mapping->writeback_index; 803 __entry->nr_to_write = nr_to_write; 804 __entry->wrote = nr_to_write - wbc->nr_to_write; 805 __entry->cgroup_ino = __trace_wbc_assign_cgroup(wbc); 806 ), 807 808 TP_printk("bdi %s: ino=%lu state=%s dirtied_when=%lu age=%lu " 809 "index=%lu to_write=%ld wrote=%lu cgroup_ino=%u", 810 __entry->name, 811 __entry->ino, 812 show_inode_state(__entry->state), 813 __entry->dirtied_when, 814 (jiffies - __entry->dirtied_when) / HZ, 815 __entry->writeback_index, 816 __entry->nr_to_write, 817 __entry->wrote, 818 __entry->cgroup_ino 819 ) 820 ); 821 822 DEFINE_EVENT(writeback_single_inode_template, writeback_single_inode_start, 823 TP_PROTO(struct inode *inode, 824 struct writeback_control *wbc, 825 unsigned long nr_to_write), 826 TP_ARGS(inode, wbc, nr_to_write) 827 ); 828 829 DEFINE_EVENT(writeback_single_inode_template, writeback_single_inode, 830 TP_PROTO(struct inode *inode, 831 struct writeback_control *wbc, 832 unsigned long nr_to_write), 833 TP_ARGS(inode, wbc, nr_to_write) 834 ); 835 836 DECLARE_EVENT_CLASS(writeback_inode_template, 837 TP_PROTO(struct inode *inode), 838 839 TP_ARGS(inode), 840 841 TP_STRUCT__entry( 842 __field( dev_t, dev ) 843 __field(unsigned long, ino ) 844 __field(unsigned long, state ) 845 __field( __u16, mode ) 846 __field(unsigned long, dirtied_when ) 847 ), 848 849 TP_fast_assign( 850 __entry->dev = inode->i_sb->s_dev; 851 __entry->ino = inode->i_ino; 852 __entry->state = inode->i_state; 853 __entry->mode = inode->i_mode; 854 __entry->dirtied_when = inode->dirtied_when; 855 ), 856 857 TP_printk("dev %d,%d ino %lu dirtied %lu state %s mode 0%o", 858 MAJOR(__entry->dev), MINOR(__entry->dev), 859 __entry->ino, __entry->dirtied_when, 860 show_inode_state(__entry->state), __entry->mode) 861 ); 862 863 DEFINE_EVENT(writeback_inode_template, writeback_lazytime, 864 TP_PROTO(struct inode *inode), 865 866 TP_ARGS(inode) 867 ); 868 869 DEFINE_EVENT(writeback_inode_template, writeback_lazytime_iput, 870 TP_PROTO(struct inode *inode), 871 872 TP_ARGS(inode) 873 ); 874 875 DEFINE_EVENT(writeback_inode_template, writeback_dirty_inode_enqueue, 876 877 TP_PROTO(struct inode *inode), 878 879 TP_ARGS(inode) 880 ); 881 882 /* 883 * Inode writeback list tracking. 884 */ 885 886 DEFINE_EVENT(writeback_inode_template, sb_mark_inode_writeback, 887 TP_PROTO(struct inode *inode), 888 TP_ARGS(inode) 889 ); 890 891 DEFINE_EVENT(writeback_inode_template, sb_clear_inode_writeback, 892 TP_PROTO(struct inode *inode), 893 TP_ARGS(inode) 894 ); 895 896 #endif /* _TRACE_WRITEBACK_H */ 897 898 /* This part must be outside protection */ 899 #include <trace/define_trace.h> 900