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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 EM( WB_REASON_FORKER_THREAD, "forker_thread") \
40 EMe(WB_REASON_FOREIGN_FLUSH, "foreign_flush")
41
42WB_WORK_REASON
43
44/*
45 * Now redefine the EM() and EMe() macros to map the enums to the strings
46 * that will be printed in the output.
47 */
48#undef EM
49#undef EMe
50#define EM(a,b) { a, b },
51#define EMe(a,b) { a, b }
52
53struct wb_writeback_work;
54
55DECLARE_EVENT_CLASS(writeback_folio_template,
56
57 TP_PROTO(struct folio *folio, struct address_space *mapping),
58
59 TP_ARGS(folio, mapping),
60
61 TP_STRUCT__entry (
62 __array(char, name, 32)
63 __field(ino_t, ino)
64 __field(pgoff_t, index)
65 ),
66
67 TP_fast_assign(
68 strscpy_pad(__entry->name,
69 bdi_dev_name(mapping ? inode_to_bdi(mapping->host) :
70 NULL), 32);
71 __entry->ino = mapping ? mapping->host->i_ino : 0;
72 __entry->index = folio->index;
73 ),
74
75 TP_printk("bdi %s: ino=%lu index=%lu",
76 __entry->name,
77 (unsigned long)__entry->ino,
78 __entry->index
79 )
80);
81
82DEFINE_EVENT(writeback_folio_template, writeback_dirty_folio,
83
84 TP_PROTO(struct folio *folio, struct address_space *mapping),
85
86 TP_ARGS(folio, mapping)
87);
88
89DEFINE_EVENT(writeback_folio_template, folio_wait_writeback,
90
91 TP_PROTO(struct folio *folio, struct address_space *mapping),
92
93 TP_ARGS(folio, mapping)
94);
95
96DECLARE_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(ino_t, 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 strscpy_pad(__entry->name, bdi_dev_name(bdi), 32);
114 __entry->ino = inode->i_ino;
115 __entry->state = inode->i_state;
116 __entry->flags = flags;
117 ),
118
119 TP_printk("bdi %s: ino=%lu state=%s flags=%s",
120 __entry->name,
121 (unsigned long)__entry->ino,
122 show_inode_state(__entry->state),
123 show_inode_state(__entry->flags)
124 )
125);
126
127DEFINE_EVENT(writeback_dirty_inode_template, writeback_mark_inode_dirty,
128
129 TP_PROTO(struct inode *inode, int flags),
130
131 TP_ARGS(inode, flags)
132);
133
134DEFINE_EVENT(writeback_dirty_inode_template, writeback_dirty_inode_start,
135
136 TP_PROTO(struct inode *inode, int flags),
137
138 TP_ARGS(inode, flags)
139);
140
141DEFINE_EVENT(writeback_dirty_inode_template, writeback_dirty_inode,
142
143 TP_PROTO(struct inode *inode, int flags),
144
145 TP_ARGS(inode, flags)
146);
147
148#ifdef CREATE_TRACE_POINTS
149#ifdef CONFIG_CGROUP_WRITEBACK
150
151static inline ino_t __trace_wb_assign_cgroup(struct bdi_writeback *wb)
152{
153 return cgroup_ino(wb->memcg_css->cgroup);
154}
155
156static inline ino_t __trace_wbc_assign_cgroup(struct writeback_control *wbc)
157{
158 if (wbc->wb)
159 return __trace_wb_assign_cgroup(wbc->wb);
160 else
161 return 1;
162}
163#else /* CONFIG_CGROUP_WRITEBACK */
164
165static inline ino_t __trace_wb_assign_cgroup(struct bdi_writeback *wb)
166{
167 return 1;
168}
169
170static inline ino_t __trace_wbc_assign_cgroup(struct writeback_control *wbc)
171{
172 return 1;
173}
174
175#endif /* CONFIG_CGROUP_WRITEBACK */
176#endif /* CREATE_TRACE_POINTS */
177
178#ifdef CONFIG_CGROUP_WRITEBACK
179TRACE_EVENT(inode_foreign_history,
180
181 TP_PROTO(struct inode *inode, struct writeback_control *wbc,
182 unsigned int history),
183
184 TP_ARGS(inode, wbc, history),
185
186 TP_STRUCT__entry(
187 __array(char, name, 32)
188 __field(ino_t, ino)
189 __field(ino_t, cgroup_ino)
190 __field(unsigned int, history)
191 ),
192
193 TP_fast_assign(
194 strscpy_pad(__entry->name, bdi_dev_name(inode_to_bdi(inode)), 32);
195 __entry->ino = inode->i_ino;
196 __entry->cgroup_ino = __trace_wbc_assign_cgroup(wbc);
197 __entry->history = history;
198 ),
199
200 TP_printk("bdi %s: ino=%lu cgroup_ino=%lu history=0x%x",
201 __entry->name,
202 (unsigned long)__entry->ino,
203 (unsigned long)__entry->cgroup_ino,
204 __entry->history
205 )
206);
207
208TRACE_EVENT(inode_switch_wbs,
209
210 TP_PROTO(struct inode *inode, struct bdi_writeback *old_wb,
211 struct bdi_writeback *new_wb),
212
213 TP_ARGS(inode, old_wb, new_wb),
214
215 TP_STRUCT__entry(
216 __array(char, name, 32)
217 __field(ino_t, ino)
218 __field(ino_t, old_cgroup_ino)
219 __field(ino_t, new_cgroup_ino)
220 ),
221
222 TP_fast_assign(
223 strscpy_pad(__entry->name, bdi_dev_name(old_wb->bdi), 32);
224 __entry->ino = inode->i_ino;
225 __entry->old_cgroup_ino = __trace_wb_assign_cgroup(old_wb);
226 __entry->new_cgroup_ino = __trace_wb_assign_cgroup(new_wb);
227 ),
228
229 TP_printk("bdi %s: ino=%lu old_cgroup_ino=%lu new_cgroup_ino=%lu",
230 __entry->name,
231 (unsigned long)__entry->ino,
232 (unsigned long)__entry->old_cgroup_ino,
233 (unsigned long)__entry->new_cgroup_ino
234 )
235);
236
237TRACE_EVENT(track_foreign_dirty,
238
239 TP_PROTO(struct folio *folio, struct bdi_writeback *wb),
240
241 TP_ARGS(folio, wb),
242
243 TP_STRUCT__entry(
244 __array(char, name, 32)
245 __field(u64, bdi_id)
246 __field(ino_t, ino)
247 __field(unsigned int, memcg_id)
248 __field(ino_t, cgroup_ino)
249 __field(ino_t, page_cgroup_ino)
250 ),
251
252 TP_fast_assign(
253 struct address_space *mapping = folio_mapping(folio);
254 struct inode *inode = mapping ? mapping->host : NULL;
255
256 strscpy_pad(__entry->name, bdi_dev_name(wb->bdi), 32);
257 __entry->bdi_id = wb->bdi->id;
258 __entry->ino = inode ? inode->i_ino : 0;
259 __entry->memcg_id = wb->memcg_css->id;
260 __entry->cgroup_ino = __trace_wb_assign_cgroup(wb);
261 __entry->page_cgroup_ino = cgroup_ino(folio_memcg(folio)->css.cgroup);
262 ),
263
264 TP_printk("bdi %s[%llu]: ino=%lu memcg_id=%u cgroup_ino=%lu page_cgroup_ino=%lu",
265 __entry->name,
266 __entry->bdi_id,
267 (unsigned long)__entry->ino,
268 __entry->memcg_id,
269 (unsigned long)__entry->cgroup_ino,
270 (unsigned long)__entry->page_cgroup_ino
271 )
272);
273
274TRACE_EVENT(flush_foreign,
275
276 TP_PROTO(struct bdi_writeback *wb, unsigned int frn_bdi_id,
277 unsigned int frn_memcg_id),
278
279 TP_ARGS(wb, frn_bdi_id, frn_memcg_id),
280
281 TP_STRUCT__entry(
282 __array(char, name, 32)
283 __field(ino_t, cgroup_ino)
284 __field(unsigned int, frn_bdi_id)
285 __field(unsigned int, frn_memcg_id)
286 ),
287
288 TP_fast_assign(
289 strscpy_pad(__entry->name, bdi_dev_name(wb->bdi), 32);
290 __entry->cgroup_ino = __trace_wb_assign_cgroup(wb);
291 __entry->frn_bdi_id = frn_bdi_id;
292 __entry->frn_memcg_id = frn_memcg_id;
293 ),
294
295 TP_printk("bdi %s: cgroup_ino=%lu frn_bdi_id=%u frn_memcg_id=%u",
296 __entry->name,
297 (unsigned long)__entry->cgroup_ino,
298 __entry->frn_bdi_id,
299 __entry->frn_memcg_id
300 )
301);
302#endif
303
304DECLARE_EVENT_CLASS(writeback_write_inode_template,
305
306 TP_PROTO(struct inode *inode, struct writeback_control *wbc),
307
308 TP_ARGS(inode, wbc),
309
310 TP_STRUCT__entry (
311 __array(char, name, 32)
312 __field(ino_t, ino)
313 __field(int, sync_mode)
314 __field(ino_t, cgroup_ino)
315 ),
316
317 TP_fast_assign(
318 strscpy_pad(__entry->name,
319 bdi_dev_name(inode_to_bdi(inode)), 32);
320 __entry->ino = inode->i_ino;
321 __entry->sync_mode = wbc->sync_mode;
322 __entry->cgroup_ino = __trace_wbc_assign_cgroup(wbc);
323 ),
324
325 TP_printk("bdi %s: ino=%lu sync_mode=%d cgroup_ino=%lu",
326 __entry->name,
327 (unsigned long)__entry->ino,
328 __entry->sync_mode,
329 (unsigned long)__entry->cgroup_ino
330 )
331);
332
333DEFINE_EVENT(writeback_write_inode_template, writeback_write_inode_start,
334
335 TP_PROTO(struct inode *inode, struct writeback_control *wbc),
336
337 TP_ARGS(inode, wbc)
338);
339
340DEFINE_EVENT(writeback_write_inode_template, writeback_write_inode,
341
342 TP_PROTO(struct inode *inode, struct writeback_control *wbc),
343
344 TP_ARGS(inode, wbc)
345);
346
347DECLARE_EVENT_CLASS(writeback_work_class,
348 TP_PROTO(struct bdi_writeback *wb, struct wb_writeback_work *work),
349 TP_ARGS(wb, work),
350 TP_STRUCT__entry(
351 __array(char, name, 32)
352 __field(long, nr_pages)
353 __field(dev_t, sb_dev)
354 __field(int, sync_mode)
355 __field(int, for_kupdate)
356 __field(int, range_cyclic)
357 __field(int, for_background)
358 __field(int, reason)
359 __field(ino_t, cgroup_ino)
360 ),
361 TP_fast_assign(
362 strscpy_pad(__entry->name, bdi_dev_name(wb->bdi), 32);
363 __entry->nr_pages = work->nr_pages;
364 __entry->sb_dev = work->sb ? work->sb->s_dev : 0;
365 __entry->sync_mode = work->sync_mode;
366 __entry->for_kupdate = work->for_kupdate;
367 __entry->range_cyclic = work->range_cyclic;
368 __entry->for_background = work->for_background;
369 __entry->reason = work->reason;
370 __entry->cgroup_ino = __trace_wb_assign_cgroup(wb);
371 ),
372 TP_printk("bdi %s: sb_dev %d:%d nr_pages=%ld sync_mode=%d "
373 "kupdate=%d range_cyclic=%d background=%d reason=%s cgroup_ino=%lu",
374 __entry->name,
375 MAJOR(__entry->sb_dev), MINOR(__entry->sb_dev),
376 __entry->nr_pages,
377 __entry->sync_mode,
378 __entry->for_kupdate,
379 __entry->range_cyclic,
380 __entry->for_background,
381 __print_symbolic(__entry->reason, WB_WORK_REASON),
382 (unsigned long)__entry->cgroup_ino
383 )
384);
385#define DEFINE_WRITEBACK_WORK_EVENT(name) \
386DEFINE_EVENT(writeback_work_class, name, \
387 TP_PROTO(struct bdi_writeback *wb, struct wb_writeback_work *work), \
388 TP_ARGS(wb, work))
389DEFINE_WRITEBACK_WORK_EVENT(writeback_queue);
390DEFINE_WRITEBACK_WORK_EVENT(writeback_exec);
391DEFINE_WRITEBACK_WORK_EVENT(writeback_start);
392DEFINE_WRITEBACK_WORK_EVENT(writeback_written);
393DEFINE_WRITEBACK_WORK_EVENT(writeback_wait);
394
395TRACE_EVENT(writeback_pages_written,
396 TP_PROTO(long pages_written),
397 TP_ARGS(pages_written),
398 TP_STRUCT__entry(
399 __field(long, pages)
400 ),
401 TP_fast_assign(
402 __entry->pages = pages_written;
403 ),
404 TP_printk("%ld", __entry->pages)
405);
406
407DECLARE_EVENT_CLASS(writeback_class,
408 TP_PROTO(struct bdi_writeback *wb),
409 TP_ARGS(wb),
410 TP_STRUCT__entry(
411 __array(char, name, 32)
412 __field(ino_t, cgroup_ino)
413 ),
414 TP_fast_assign(
415 strscpy_pad(__entry->name, bdi_dev_name(wb->bdi), 32);
416 __entry->cgroup_ino = __trace_wb_assign_cgroup(wb);
417 ),
418 TP_printk("bdi %s: cgroup_ino=%lu",
419 __entry->name,
420 (unsigned long)__entry->cgroup_ino
421 )
422);
423#define DEFINE_WRITEBACK_EVENT(name) \
424DEFINE_EVENT(writeback_class, name, \
425 TP_PROTO(struct bdi_writeback *wb), \
426 TP_ARGS(wb))
427
428DEFINE_WRITEBACK_EVENT(writeback_wake_background);
429
430TRACE_EVENT(writeback_bdi_register,
431 TP_PROTO(struct backing_dev_info *bdi),
432 TP_ARGS(bdi),
433 TP_STRUCT__entry(
434 __array(char, name, 32)
435 ),
436 TP_fast_assign(
437 strscpy_pad(__entry->name, bdi_dev_name(bdi), 32);
438 ),
439 TP_printk("bdi %s",
440 __entry->name
441 )
442);
443
444DECLARE_EVENT_CLASS(wbc_class,
445 TP_PROTO(struct writeback_control *wbc, struct backing_dev_info *bdi),
446 TP_ARGS(wbc, bdi),
447 TP_STRUCT__entry(
448 __array(char, name, 32)
449 __field(long, nr_to_write)
450 __field(long, pages_skipped)
451 __field(int, sync_mode)
452 __field(int, for_kupdate)
453 __field(int, for_background)
454 __field(int, for_reclaim)
455 __field(int, range_cyclic)
456 __field(long, range_start)
457 __field(long, range_end)
458 __field(ino_t, cgroup_ino)
459 ),
460
461 TP_fast_assign(
462 strscpy_pad(__entry->name, bdi_dev_name(bdi), 32);
463 __entry->nr_to_write = wbc->nr_to_write;
464 __entry->pages_skipped = wbc->pages_skipped;
465 __entry->sync_mode = wbc->sync_mode;
466 __entry->for_kupdate = wbc->for_kupdate;
467 __entry->for_background = wbc->for_background;
468 __entry->for_reclaim = wbc->for_reclaim;
469 __entry->range_cyclic = wbc->range_cyclic;
470 __entry->range_start = (long)wbc->range_start;
471 __entry->range_end = (long)wbc->range_end;
472 __entry->cgroup_ino = __trace_wbc_assign_cgroup(wbc);
473 ),
474
475 TP_printk("bdi %s: towrt=%ld skip=%ld mode=%d kupd=%d "
476 "bgrd=%d reclm=%d cyclic=%d "
477 "start=0x%lx end=0x%lx cgroup_ino=%lu",
478 __entry->name,
479 __entry->nr_to_write,
480 __entry->pages_skipped,
481 __entry->sync_mode,
482 __entry->for_kupdate,
483 __entry->for_background,
484 __entry->for_reclaim,
485 __entry->range_cyclic,
486 __entry->range_start,
487 __entry->range_end,
488 (unsigned long)__entry->cgroup_ino
489 )
490)
491
492#define DEFINE_WBC_EVENT(name) \
493DEFINE_EVENT(wbc_class, name, \
494 TP_PROTO(struct writeback_control *wbc, struct backing_dev_info *bdi), \
495 TP_ARGS(wbc, bdi))
496DEFINE_WBC_EVENT(wbc_writepage);
497
498TRACE_EVENT(writeback_queue_io,
499 TP_PROTO(struct bdi_writeback *wb,
500 struct wb_writeback_work *work,
501 unsigned long dirtied_before,
502 int moved),
503 TP_ARGS(wb, work, dirtied_before, moved),
504 TP_STRUCT__entry(
505 __array(char, name, 32)
506 __field(unsigned long, older)
507 __field(long, age)
508 __field(int, moved)
509 __field(int, reason)
510 __field(ino_t, cgroup_ino)
511 ),
512 TP_fast_assign(
513 strscpy_pad(__entry->name, bdi_dev_name(wb->bdi), 32);
514 __entry->older = dirtied_before;
515 __entry->age = (jiffies - dirtied_before) * 1000 / HZ;
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=%lu",
521 __entry->name,
522 __entry->older, /* dirtied_before in jiffies */
523 __entry->age, /* dirtied_before in relative milliseconds */
524 __entry->moved,
525 __print_symbolic(__entry->reason, WB_WORK_REASON),
526 (unsigned long)__entry->cgroup_ino
527 )
528);
529
530TRACE_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, background_thresh)
544 __field(unsigned long, dirty_thresh)
545 __field(unsigned long, dirty_limit)
546 __field(unsigned long, nr_dirtied)
547 __field(unsigned long, nr_written)
548 ),
549
550 TP_fast_assign(
551 __entry->nr_dirty = global_node_page_state(NR_FILE_DIRTY);
552 __entry->nr_writeback = global_node_page_state(NR_WRITEBACK);
553 __entry->nr_dirtied = global_node_page_state(NR_DIRTIED);
554 __entry->nr_written = global_node_page_state(NR_WRITTEN);
555 __entry->background_thresh = background_thresh;
556 __entry->dirty_thresh = dirty_thresh;
557 __entry->dirty_limit = global_wb_domain.dirty_limit;
558 ),
559
560 TP_printk("dirty=%lu writeback=%lu "
561 "bg_thresh=%lu thresh=%lu limit=%lu "
562 "dirtied=%lu written=%lu",
563 __entry->nr_dirty,
564 __entry->nr_writeback,
565 __entry->background_thresh,
566 __entry->dirty_thresh,
567 __entry->dirty_limit,
568 __entry->nr_dirtied,
569 __entry->nr_written
570 )
571);
572
573#define KBps(x) ((x) << (PAGE_SHIFT - 10))
574
575TRACE_EVENT(bdi_dirty_ratelimit,
576
577 TP_PROTO(struct bdi_writeback *wb,
578 unsigned long dirty_rate,
579 unsigned long task_ratelimit),
580
581 TP_ARGS(wb, dirty_rate, task_ratelimit),
582
583 TP_STRUCT__entry(
584 __array(char, bdi, 32)
585 __field(unsigned long, write_bw)
586 __field(unsigned long, avg_write_bw)
587 __field(unsigned long, dirty_rate)
588 __field(unsigned long, dirty_ratelimit)
589 __field(unsigned long, task_ratelimit)
590 __field(unsigned long, balanced_dirty_ratelimit)
591 __field(ino_t, cgroup_ino)
592 ),
593
594 TP_fast_assign(
595 strscpy_pad(__entry->bdi, bdi_dev_name(wb->bdi), 32);
596 __entry->write_bw = KBps(wb->write_bandwidth);
597 __entry->avg_write_bw = KBps(wb->avg_write_bandwidth);
598 __entry->dirty_rate = KBps(dirty_rate);
599 __entry->dirty_ratelimit = KBps(wb->dirty_ratelimit);
600 __entry->task_ratelimit = KBps(task_ratelimit);
601 __entry->balanced_dirty_ratelimit =
602 KBps(wb->balanced_dirty_ratelimit);
603 __entry->cgroup_ino = __trace_wb_assign_cgroup(wb);
604 ),
605
606 TP_printk("bdi %s: "
607 "write_bw=%lu awrite_bw=%lu dirty_rate=%lu "
608 "dirty_ratelimit=%lu task_ratelimit=%lu "
609 "balanced_dirty_ratelimit=%lu cgroup_ino=%lu",
610 __entry->bdi,
611 __entry->write_bw, /* write bandwidth */
612 __entry->avg_write_bw, /* avg write bandwidth */
613 __entry->dirty_rate, /* bdi dirty rate */
614 __entry->dirty_ratelimit, /* base ratelimit */
615 __entry->task_ratelimit, /* ratelimit with position control */
616 __entry->balanced_dirty_ratelimit, /* the balanced ratelimit */
617 (unsigned long)__entry->cgroup_ino
618 )
619);
620
621TRACE_EVENT(balance_dirty_pages,
622
623 TP_PROTO(struct bdi_writeback *wb,
624 unsigned long thresh,
625 unsigned long bg_thresh,
626 unsigned long dirty,
627 unsigned long bdi_thresh,
628 unsigned long bdi_dirty,
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, thresh, bg_thresh, dirty, bdi_thresh, bdi_dirty,
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, bdi_setpoint)
646 __field(unsigned long, bdi_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 = (thresh + bg_thresh) / 2;
660 strscpy_pad(__entry->bdi, bdi_dev_name(wb->bdi), 32);
661
662 __entry->limit = global_wb_domain.dirty_limit;
663 __entry->setpoint = (global_wb_domain.dirty_limit +
664 freerun) / 2;
665 __entry->dirty = dirty;
666 __entry->bdi_setpoint = __entry->setpoint *
667 bdi_thresh / (thresh + 1);
668 __entry->bdi_dirty = bdi_dirty;
669 __entry->dirty_ratelimit = KBps(dirty_ratelimit);
670 __entry->task_ratelimit = KBps(task_ratelimit);
671 __entry->dirtied = dirtied;
672 __entry->dirtied_pause = current->nr_dirtied_pause;
673 __entry->think = current->dirty_paused_when == 0 ? 0 :
674 (long)(jiffies - current->dirty_paused_when) * 1000/HZ;
675 __entry->period = period * 1000 / HZ;
676 __entry->pause = pause * 1000 / HZ;
677 __entry->paused = (jiffies - start_time) * 1000 / HZ;
678 __entry->cgroup_ino = __trace_wb_assign_cgroup(wb);
679 ),
680
681
682 TP_printk("bdi %s: "
683 "limit=%lu setpoint=%lu dirty=%lu "
684 "bdi_setpoint=%lu bdi_dirty=%lu "
685 "dirty_ratelimit=%lu task_ratelimit=%lu "
686 "dirtied=%u dirtied_pause=%u "
687 "paused=%lu pause=%ld period=%lu think=%ld cgroup_ino=%lu",
688 __entry->bdi,
689 __entry->limit,
690 __entry->setpoint,
691 __entry->dirty,
692 __entry->bdi_setpoint,
693 __entry->bdi_dirty,
694 __entry->dirty_ratelimit,
695 __entry->task_ratelimit,
696 __entry->dirtied,
697 __entry->dirtied_pause,
698 __entry->paused, /* ms */
699 __entry->pause, /* ms */
700 __entry->period, /* ms */
701 __entry->think, /* ms */
702 (unsigned long)__entry->cgroup_ino
703 )
704);
705
706TRACE_EVENT(writeback_sb_inodes_requeue,
707
708 TP_PROTO(struct inode *inode),
709 TP_ARGS(inode),
710
711 TP_STRUCT__entry(
712 __array(char, name, 32)
713 __field(ino_t, ino)
714 __field(unsigned long, state)
715 __field(unsigned long, dirtied_when)
716 __field(ino_t, cgroup_ino)
717 ),
718
719 TP_fast_assign(
720 strscpy_pad(__entry->name,
721 bdi_dev_name(inode_to_bdi(inode)), 32);
722 __entry->ino = inode->i_ino;
723 __entry->state = inode->i_state;
724 __entry->dirtied_when = inode->dirtied_when;
725 __entry->cgroup_ino = __trace_wb_assign_cgroup(inode_to_wb(inode));
726 ),
727
728 TP_printk("bdi %s: ino=%lu state=%s dirtied_when=%lu age=%lu cgroup_ino=%lu",
729 __entry->name,
730 (unsigned long)__entry->ino,
731 show_inode_state(__entry->state),
732 __entry->dirtied_when,
733 (jiffies - __entry->dirtied_when) / HZ,
734 (unsigned long)__entry->cgroup_ino
735 )
736);
737
738DECLARE_EVENT_CLASS(writeback_single_inode_template,
739
740 TP_PROTO(struct inode *inode,
741 struct writeback_control *wbc,
742 unsigned long nr_to_write
743 ),
744
745 TP_ARGS(inode, wbc, nr_to_write),
746
747 TP_STRUCT__entry(
748 __array(char, name, 32)
749 __field(ino_t, ino)
750 __field(unsigned long, state)
751 __field(unsigned long, dirtied_when)
752 __field(unsigned long, writeback_index)
753 __field(long, nr_to_write)
754 __field(unsigned long, wrote)
755 __field(ino_t, cgroup_ino)
756 ),
757
758 TP_fast_assign(
759 strscpy_pad(__entry->name,
760 bdi_dev_name(inode_to_bdi(inode)), 32);
761 __entry->ino = inode->i_ino;
762 __entry->state = inode->i_state;
763 __entry->dirtied_when = inode->dirtied_when;
764 __entry->writeback_index = inode->i_mapping->writeback_index;
765 __entry->nr_to_write = nr_to_write;
766 __entry->wrote = nr_to_write - wbc->nr_to_write;
767 __entry->cgroup_ino = __trace_wbc_assign_cgroup(wbc);
768 ),
769
770 TP_printk("bdi %s: ino=%lu state=%s dirtied_when=%lu age=%lu "
771 "index=%lu to_write=%ld wrote=%lu cgroup_ino=%lu",
772 __entry->name,
773 (unsigned long)__entry->ino,
774 show_inode_state(__entry->state),
775 __entry->dirtied_when,
776 (jiffies - __entry->dirtied_when) / HZ,
777 __entry->writeback_index,
778 __entry->nr_to_write,
779 __entry->wrote,
780 (unsigned long)__entry->cgroup_ino
781 )
782);
783
784DEFINE_EVENT(writeback_single_inode_template, writeback_single_inode_start,
785 TP_PROTO(struct inode *inode,
786 struct writeback_control *wbc,
787 unsigned long nr_to_write),
788 TP_ARGS(inode, wbc, nr_to_write)
789);
790
791DEFINE_EVENT(writeback_single_inode_template, writeback_single_inode,
792 TP_PROTO(struct inode *inode,
793 struct writeback_control *wbc,
794 unsigned long nr_to_write),
795 TP_ARGS(inode, wbc, nr_to_write)
796);
797
798DECLARE_EVENT_CLASS(writeback_inode_template,
799 TP_PROTO(struct inode *inode),
800
801 TP_ARGS(inode),
802
803 TP_STRUCT__entry(
804 __field( dev_t, dev )
805 __field( ino_t, ino )
806 __field(unsigned long, state )
807 __field( __u16, mode )
808 __field(unsigned long, dirtied_when )
809 ),
810
811 TP_fast_assign(
812 __entry->dev = inode->i_sb->s_dev;
813 __entry->ino = inode->i_ino;
814 __entry->state = inode->i_state;
815 __entry->mode = inode->i_mode;
816 __entry->dirtied_when = inode->dirtied_when;
817 ),
818
819 TP_printk("dev %d,%d ino %lu dirtied %lu state %s mode 0%o",
820 MAJOR(__entry->dev), MINOR(__entry->dev),
821 (unsigned long)__entry->ino, __entry->dirtied_when,
822 show_inode_state(__entry->state), __entry->mode)
823);
824
825DEFINE_EVENT(writeback_inode_template, writeback_lazytime,
826 TP_PROTO(struct inode *inode),
827
828 TP_ARGS(inode)
829);
830
831DEFINE_EVENT(writeback_inode_template, writeback_lazytime_iput,
832 TP_PROTO(struct inode *inode),
833
834 TP_ARGS(inode)
835);
836
837DEFINE_EVENT(writeback_inode_template, writeback_dirty_inode_enqueue,
838
839 TP_PROTO(struct inode *inode),
840
841 TP_ARGS(inode)
842);
843
844/*
845 * Inode writeback list tracking.
846 */
847
848DEFINE_EVENT(writeback_inode_template, sb_mark_inode_writeback,
849 TP_PROTO(struct inode *inode),
850 TP_ARGS(inode)
851);
852
853DEFINE_EVENT(writeback_inode_template, sb_clear_inode_writeback,
854 TP_PROTO(struct inode *inode),
855 TP_ARGS(inode)
856);
857
858#endif /* _TRACE_WRITEBACK_H */
859
860/* This part must be outside protection */
861#include <trace/define_trace.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 {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
50WB_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
61struct wb_writeback_work;
62
63DECLARE_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
90DEFINE_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
97DEFINE_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
104DECLARE_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
135DEFINE_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
142DEFINE_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
149DEFINE_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
159static inline ino_t __trace_wb_assign_cgroup(struct bdi_writeback *wb)
160{
161 return cgroup_ino(wb->memcg_css->cgroup);
162}
163
164static 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
173static inline ino_t __trace_wb_assign_cgroup(struct bdi_writeback *wb)
174{
175 return 1;
176}
177
178static 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
187TRACE_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
216TRACE_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
245TRACE_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
282TRACE_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
312DECLARE_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
341DEFINE_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
348DEFINE_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
355DECLARE_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) \
394DEFINE_EVENT(writeback_work_class, name, \
395 TP_PROTO(struct bdi_writeback *wb, struct wb_writeback_work *work), \
396 TP_ARGS(wb, work))
397DEFINE_WRITEBACK_WORK_EVENT(writeback_queue);
398DEFINE_WRITEBACK_WORK_EVENT(writeback_exec);
399DEFINE_WRITEBACK_WORK_EVENT(writeback_start);
400DEFINE_WRITEBACK_WORK_EVENT(writeback_written);
401DEFINE_WRITEBACK_WORK_EVENT(writeback_wait);
402
403TRACE_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
415DECLARE_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) \
432DEFINE_EVENT(writeback_class, name, \
433 TP_PROTO(struct bdi_writeback *wb), \
434 TP_ARGS(wb))
435
436DEFINE_WRITEBACK_EVENT(writeback_wake_background);
437
438TRACE_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
452DECLARE_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, for_reclaim)
463 __field(int, range_cyclic)
464 __field(long, range_start)
465 __field(long, range_end)
466 __field(ino_t, cgroup_ino)
467 ),
468
469 TP_fast_assign(
470 strscpy_pad(__entry->name, bdi_dev_name(bdi), 32);
471 __entry->nr_to_write = wbc->nr_to_write;
472 __entry->pages_skipped = wbc->pages_skipped;
473 __entry->sync_mode = wbc->sync_mode;
474 __entry->for_kupdate = wbc->for_kupdate;
475 __entry->for_background = wbc->for_background;
476 __entry->for_reclaim = wbc->for_reclaim;
477 __entry->range_cyclic = wbc->range_cyclic;
478 __entry->range_start = (long)wbc->range_start;
479 __entry->range_end = (long)wbc->range_end;
480 __entry->cgroup_ino = __trace_wbc_assign_cgroup(wbc);
481 ),
482
483 TP_printk("bdi %s: towrt=%ld skip=%ld mode=%d kupd=%d "
484 "bgrd=%d reclm=%d cyclic=%d "
485 "start=0x%lx end=0x%lx cgroup_ino=%lu",
486 __entry->name,
487 __entry->nr_to_write,
488 __entry->pages_skipped,
489 __entry->sync_mode,
490 __entry->for_kupdate,
491 __entry->for_background,
492 __entry->for_reclaim,
493 __entry->range_cyclic,
494 __entry->range_start,
495 __entry->range_end,
496 (unsigned long)__entry->cgroup_ino
497 )
498)
499
500#define DEFINE_WBC_EVENT(name) \
501DEFINE_EVENT(wbc_class, name, \
502 TP_PROTO(struct writeback_control *wbc, struct backing_dev_info *bdi), \
503 TP_ARGS(wbc, bdi))
504DEFINE_WBC_EVENT(wbc_writepage);
505
506TRACE_EVENT(writeback_queue_io,
507 TP_PROTO(struct bdi_writeback *wb,
508 struct wb_writeback_work *work,
509 unsigned long dirtied_before,
510 int moved),
511 TP_ARGS(wb, work, dirtied_before, moved),
512 TP_STRUCT__entry(
513 __array(char, name, 32)
514 __field(unsigned long, older)
515 __field(long, age)
516 __field(int, moved)
517 __field(int, reason)
518 __field(ino_t, cgroup_ino)
519 ),
520 TP_fast_assign(
521 strscpy_pad(__entry->name, bdi_dev_name(wb->bdi), 32);
522 __entry->older = dirtied_before;
523 __entry->age = (jiffies - dirtied_before) * 1000 / HZ;
524 __entry->moved = moved;
525 __entry->reason = work->reason;
526 __entry->cgroup_ino = __trace_wb_assign_cgroup(wb);
527 ),
528 TP_printk("bdi %s: older=%lu age=%ld enqueue=%d reason=%s cgroup_ino=%lu",
529 __entry->name,
530 __entry->older, /* dirtied_before in jiffies */
531 __entry->age, /* dirtied_before in relative milliseconds */
532 __entry->moved,
533 __print_symbolic(__entry->reason, WB_WORK_REASON),
534 (unsigned long)__entry->cgroup_ino
535 )
536);
537
538TRACE_EVENT(global_dirty_state,
539
540 TP_PROTO(unsigned long background_thresh,
541 unsigned long dirty_thresh
542 ),
543
544 TP_ARGS(background_thresh,
545 dirty_thresh
546 ),
547
548 TP_STRUCT__entry(
549 __field(unsigned long, nr_dirty)
550 __field(unsigned long, nr_writeback)
551 __field(unsigned long, background_thresh)
552 __field(unsigned long, dirty_thresh)
553 __field(unsigned long, dirty_limit)
554 __field(unsigned long, nr_dirtied)
555 __field(unsigned long, nr_written)
556 ),
557
558 TP_fast_assign(
559 __entry->nr_dirty = global_node_page_state(NR_FILE_DIRTY);
560 __entry->nr_writeback = global_node_page_state(NR_WRITEBACK);
561 __entry->nr_dirtied = global_node_page_state(NR_DIRTIED);
562 __entry->nr_written = global_node_page_state(NR_WRITTEN);
563 __entry->background_thresh = background_thresh;
564 __entry->dirty_thresh = dirty_thresh;
565 __entry->dirty_limit = global_wb_domain.dirty_limit;
566 ),
567
568 TP_printk("dirty=%lu writeback=%lu "
569 "bg_thresh=%lu thresh=%lu limit=%lu "
570 "dirtied=%lu written=%lu",
571 __entry->nr_dirty,
572 __entry->nr_writeback,
573 __entry->background_thresh,
574 __entry->dirty_thresh,
575 __entry->dirty_limit,
576 __entry->nr_dirtied,
577 __entry->nr_written
578 )
579);
580
581#define KBps(x) ((x) << (PAGE_SHIFT - 10))
582
583TRACE_EVENT(bdi_dirty_ratelimit,
584
585 TP_PROTO(struct bdi_writeback *wb,
586 unsigned long dirty_rate,
587 unsigned long task_ratelimit),
588
589 TP_ARGS(wb, dirty_rate, task_ratelimit),
590
591 TP_STRUCT__entry(
592 __array(char, bdi, 32)
593 __field(unsigned long, write_bw)
594 __field(unsigned long, avg_write_bw)
595 __field(unsigned long, dirty_rate)
596 __field(unsigned long, dirty_ratelimit)
597 __field(unsigned long, task_ratelimit)
598 __field(unsigned long, balanced_dirty_ratelimit)
599 __field(ino_t, cgroup_ino)
600 ),
601
602 TP_fast_assign(
603 strscpy_pad(__entry->bdi, bdi_dev_name(wb->bdi), 32);
604 __entry->write_bw = KBps(wb->write_bandwidth);
605 __entry->avg_write_bw = KBps(wb->avg_write_bandwidth);
606 __entry->dirty_rate = KBps(dirty_rate);
607 __entry->dirty_ratelimit = KBps(wb->dirty_ratelimit);
608 __entry->task_ratelimit = KBps(task_ratelimit);
609 __entry->balanced_dirty_ratelimit =
610 KBps(wb->balanced_dirty_ratelimit);
611 __entry->cgroup_ino = __trace_wb_assign_cgroup(wb);
612 ),
613
614 TP_printk("bdi %s: "
615 "write_bw=%lu awrite_bw=%lu dirty_rate=%lu "
616 "dirty_ratelimit=%lu task_ratelimit=%lu "
617 "balanced_dirty_ratelimit=%lu cgroup_ino=%lu",
618 __entry->bdi,
619 __entry->write_bw, /* write bandwidth */
620 __entry->avg_write_bw, /* avg write bandwidth */
621 __entry->dirty_rate, /* bdi dirty rate */
622 __entry->dirty_ratelimit, /* base ratelimit */
623 __entry->task_ratelimit, /* ratelimit with position control */
624 __entry->balanced_dirty_ratelimit, /* the balanced ratelimit */
625 (unsigned long)__entry->cgroup_ino
626 )
627);
628
629TRACE_EVENT(balance_dirty_pages,
630
631 TP_PROTO(struct bdi_writeback *wb,
632 unsigned long thresh,
633 unsigned long bg_thresh,
634 unsigned long dirty,
635 unsigned long bdi_thresh,
636 unsigned long bdi_dirty,
637 unsigned long dirty_ratelimit,
638 unsigned long task_ratelimit,
639 unsigned long dirtied,
640 unsigned long period,
641 long pause,
642 unsigned long start_time),
643
644 TP_ARGS(wb, thresh, bg_thresh, dirty, bdi_thresh, bdi_dirty,
645 dirty_ratelimit, task_ratelimit,
646 dirtied, period, pause, start_time),
647
648 TP_STRUCT__entry(
649 __array( char, bdi, 32)
650 __field(unsigned long, limit)
651 __field(unsigned long, setpoint)
652 __field(unsigned long, dirty)
653 __field(unsigned long, bdi_setpoint)
654 __field(unsigned long, bdi_dirty)
655 __field(unsigned long, dirty_ratelimit)
656 __field(unsigned long, task_ratelimit)
657 __field(unsigned int, dirtied)
658 __field(unsigned int, dirtied_pause)
659 __field(unsigned long, paused)
660 __field( long, pause)
661 __field(unsigned long, period)
662 __field( long, think)
663 __field(ino_t, cgroup_ino)
664 ),
665
666 TP_fast_assign(
667 unsigned long freerun = (thresh + bg_thresh) / 2;
668 strscpy_pad(__entry->bdi, bdi_dev_name(wb->bdi), 32);
669
670 __entry->limit = global_wb_domain.dirty_limit;
671 __entry->setpoint = (global_wb_domain.dirty_limit +
672 freerun) / 2;
673 __entry->dirty = dirty;
674 __entry->bdi_setpoint = __entry->setpoint *
675 bdi_thresh / (thresh + 1);
676 __entry->bdi_dirty = bdi_dirty;
677 __entry->dirty_ratelimit = KBps(dirty_ratelimit);
678 __entry->task_ratelimit = KBps(task_ratelimit);
679 __entry->dirtied = dirtied;
680 __entry->dirtied_pause = current->nr_dirtied_pause;
681 __entry->think = current->dirty_paused_when == 0 ? 0 :
682 (long)(jiffies - current->dirty_paused_when) * 1000/HZ;
683 __entry->period = period * 1000 / HZ;
684 __entry->pause = pause * 1000 / HZ;
685 __entry->paused = (jiffies - start_time) * 1000 / HZ;
686 __entry->cgroup_ino = __trace_wb_assign_cgroup(wb);
687 ),
688
689
690 TP_printk("bdi %s: "
691 "limit=%lu setpoint=%lu dirty=%lu "
692 "bdi_setpoint=%lu bdi_dirty=%lu "
693 "dirty_ratelimit=%lu task_ratelimit=%lu "
694 "dirtied=%u dirtied_pause=%u "
695 "paused=%lu pause=%ld period=%lu think=%ld cgroup_ino=%lu",
696 __entry->bdi,
697 __entry->limit,
698 __entry->setpoint,
699 __entry->dirty,
700 __entry->bdi_setpoint,
701 __entry->bdi_dirty,
702 __entry->dirty_ratelimit,
703 __entry->task_ratelimit,
704 __entry->dirtied,
705 __entry->dirtied_pause,
706 __entry->paused, /* ms */
707 __entry->pause, /* ms */
708 __entry->period, /* ms */
709 __entry->think, /* ms */
710 (unsigned long)__entry->cgroup_ino
711 )
712);
713
714TRACE_EVENT(writeback_sb_inodes_requeue,
715
716 TP_PROTO(struct inode *inode),
717 TP_ARGS(inode),
718
719 TP_STRUCT__entry(
720 __array(char, name, 32)
721 __field(ino_t, ino)
722 __field(unsigned long, state)
723 __field(unsigned long, dirtied_when)
724 __field(ino_t, cgroup_ino)
725 ),
726
727 TP_fast_assign(
728 strscpy_pad(__entry->name,
729 bdi_dev_name(inode_to_bdi(inode)), 32);
730 __entry->ino = inode->i_ino;
731 __entry->state = inode->i_state;
732 __entry->dirtied_when = inode->dirtied_when;
733 __entry->cgroup_ino = __trace_wb_assign_cgroup(inode_to_wb(inode));
734 ),
735
736 TP_printk("bdi %s: ino=%lu state=%s dirtied_when=%lu age=%lu cgroup_ino=%lu",
737 __entry->name,
738 (unsigned long)__entry->ino,
739 show_inode_state(__entry->state),
740 __entry->dirtied_when,
741 (jiffies - __entry->dirtied_when) / HZ,
742 (unsigned long)__entry->cgroup_ino
743 )
744);
745
746DECLARE_EVENT_CLASS(writeback_single_inode_template,
747
748 TP_PROTO(struct inode *inode,
749 struct writeback_control *wbc,
750 unsigned long nr_to_write
751 ),
752
753 TP_ARGS(inode, wbc, nr_to_write),
754
755 TP_STRUCT__entry(
756 __array(char, name, 32)
757 __field(ino_t, ino)
758 __field(unsigned long, state)
759 __field(unsigned long, dirtied_when)
760 __field(unsigned long, writeback_index)
761 __field(long, nr_to_write)
762 __field(unsigned long, wrote)
763 __field(ino_t, cgroup_ino)
764 ),
765
766 TP_fast_assign(
767 strscpy_pad(__entry->name,
768 bdi_dev_name(inode_to_bdi(inode)), 32);
769 __entry->ino = inode->i_ino;
770 __entry->state = inode->i_state;
771 __entry->dirtied_when = inode->dirtied_when;
772 __entry->writeback_index = inode->i_mapping->writeback_index;
773 __entry->nr_to_write = nr_to_write;
774 __entry->wrote = nr_to_write - wbc->nr_to_write;
775 __entry->cgroup_ino = __trace_wbc_assign_cgroup(wbc);
776 ),
777
778 TP_printk("bdi %s: ino=%lu state=%s dirtied_when=%lu age=%lu "
779 "index=%lu to_write=%ld wrote=%lu cgroup_ino=%lu",
780 __entry->name,
781 (unsigned long)__entry->ino,
782 show_inode_state(__entry->state),
783 __entry->dirtied_when,
784 (jiffies - __entry->dirtied_when) / HZ,
785 __entry->writeback_index,
786 __entry->nr_to_write,
787 __entry->wrote,
788 (unsigned long)__entry->cgroup_ino
789 )
790);
791
792DEFINE_EVENT(writeback_single_inode_template, writeback_single_inode_start,
793 TP_PROTO(struct inode *inode,
794 struct writeback_control *wbc,
795 unsigned long nr_to_write),
796 TP_ARGS(inode, wbc, nr_to_write)
797);
798
799DEFINE_EVENT(writeback_single_inode_template, writeback_single_inode,
800 TP_PROTO(struct inode *inode,
801 struct writeback_control *wbc,
802 unsigned long nr_to_write),
803 TP_ARGS(inode, wbc, nr_to_write)
804);
805
806DECLARE_EVENT_CLASS(writeback_inode_template,
807 TP_PROTO(struct inode *inode),
808
809 TP_ARGS(inode),
810
811 TP_STRUCT__entry(
812 __field( dev_t, dev )
813 __field( ino_t, ino )
814 __field(unsigned long, state )
815 __field( __u16, mode )
816 __field(unsigned long, dirtied_when )
817 ),
818
819 TP_fast_assign(
820 __entry->dev = inode->i_sb->s_dev;
821 __entry->ino = inode->i_ino;
822 __entry->state = inode->i_state;
823 __entry->mode = inode->i_mode;
824 __entry->dirtied_when = inode->dirtied_when;
825 ),
826
827 TP_printk("dev %d,%d ino %lu dirtied %lu state %s mode 0%o",
828 MAJOR(__entry->dev), MINOR(__entry->dev),
829 (unsigned long)__entry->ino, __entry->dirtied_when,
830 show_inode_state(__entry->state), __entry->mode)
831);
832
833DEFINE_EVENT(writeback_inode_template, writeback_lazytime,
834 TP_PROTO(struct inode *inode),
835
836 TP_ARGS(inode)
837);
838
839DEFINE_EVENT(writeback_inode_template, writeback_lazytime_iput,
840 TP_PROTO(struct inode *inode),
841
842 TP_ARGS(inode)
843);
844
845DEFINE_EVENT(writeback_inode_template, writeback_dirty_inode_enqueue,
846
847 TP_PROTO(struct inode *inode),
848
849 TP_ARGS(inode)
850);
851
852/*
853 * Inode writeback list tracking.
854 */
855
856DEFINE_EVENT(writeback_inode_template, sb_mark_inode_writeback,
857 TP_PROTO(struct inode *inode),
858 TP_ARGS(inode)
859);
860
861DEFINE_EVENT(writeback_inode_template, sb_clear_inode_writeback,
862 TP_PROTO(struct inode *inode),
863 TP_ARGS(inode)
864);
865
866#endif /* _TRACE_WRITEBACK_H */
867
868/* This part must be outside protection */
869#include <trace/define_trace.h>