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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#undef TRACE_SYSTEM
2#define TRACE_SYSTEM writeback
3
4#if !defined(_TRACE_WRITEBACK_H) || defined(TRACE_HEADER_MULTI_READ)
5#define _TRACE_WRITEBACK_H
6
7#include <linux/tracepoint.h>
8#include <linux/backing-dev.h>
9#include <linux/writeback.h>
10
11#define show_inode_state(state) \
12 __print_flags(state, "|", \
13 {I_DIRTY_SYNC, "I_DIRTY_SYNC"}, \
14 {I_DIRTY_DATASYNC, "I_DIRTY_DATASYNC"}, \
15 {I_DIRTY_PAGES, "I_DIRTY_PAGES"}, \
16 {I_NEW, "I_NEW"}, \
17 {I_WILL_FREE, "I_WILL_FREE"}, \
18 {I_FREEING, "I_FREEING"}, \
19 {I_CLEAR, "I_CLEAR"}, \
20 {I_SYNC, "I_SYNC"}, \
21 {I_DIRTY_TIME, "I_DIRTY_TIME"}, \
22 {I_DIRTY_TIME_EXPIRED, "I_DIRTY_TIME_EXPIRED"}, \
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_TRY_TO_FREE_PAGES, "try_to_free_pages") \
35 EM( WB_REASON_SYNC, "sync") \
36 EM( WB_REASON_PERIODIC, "periodic") \
37 EM( WB_REASON_LAPTOP_TIMER, "laptop_timer") \
38 EM( WB_REASON_FREE_MORE_MEM, "free_more_memory") \
39 EM( WB_REASON_FS_FREE_SPACE, "fs_free_space") \
40 EMe(WB_REASON_FORKER_THREAD, "forker_thread")
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
55TRACE_EVENT(writeback_dirty_page,
56
57 TP_PROTO(struct page *page, struct address_space *mapping),
58
59 TP_ARGS(page, mapping),
60
61 TP_STRUCT__entry (
62 __array(char, name, 32)
63 __field(unsigned long, ino)
64 __field(pgoff_t, index)
65 ),
66
67 TP_fast_assign(
68 strncpy(__entry->name,
69 mapping ? dev_name(inode_to_bdi(mapping->host)->dev) : "(unknown)", 32);
70 __entry->ino = mapping ? mapping->host->i_ino : 0;
71 __entry->index = page->index;
72 ),
73
74 TP_printk("bdi %s: ino=%lu index=%lu",
75 __entry->name,
76 __entry->ino,
77 __entry->index
78 )
79);
80
81DECLARE_EVENT_CLASS(writeback_dirty_inode_template,
82
83 TP_PROTO(struct inode *inode, int flags),
84
85 TP_ARGS(inode, flags),
86
87 TP_STRUCT__entry (
88 __array(char, name, 32)
89 __field(unsigned long, ino)
90 __field(unsigned long, state)
91 __field(unsigned long, flags)
92 ),
93
94 TP_fast_assign(
95 struct backing_dev_info *bdi = inode_to_bdi(inode);
96
97 /* may be called for files on pseudo FSes w/ unregistered bdi */
98 strncpy(__entry->name,
99 bdi->dev ? dev_name(bdi->dev) : "(unknown)", 32);
100 __entry->ino = inode->i_ino;
101 __entry->state = inode->i_state;
102 __entry->flags = flags;
103 ),
104
105 TP_printk("bdi %s: ino=%lu state=%s flags=%s",
106 __entry->name,
107 __entry->ino,
108 show_inode_state(__entry->state),
109 show_inode_state(__entry->flags)
110 )
111);
112
113DEFINE_EVENT(writeback_dirty_inode_template, writeback_mark_inode_dirty,
114
115 TP_PROTO(struct inode *inode, int flags),
116
117 TP_ARGS(inode, flags)
118);
119
120DEFINE_EVENT(writeback_dirty_inode_template, writeback_dirty_inode_start,
121
122 TP_PROTO(struct inode *inode, int flags),
123
124 TP_ARGS(inode, flags)
125);
126
127DEFINE_EVENT(writeback_dirty_inode_template, writeback_dirty_inode,
128
129 TP_PROTO(struct inode *inode, int flags),
130
131 TP_ARGS(inode, flags)
132);
133
134#ifdef CREATE_TRACE_POINTS
135#ifdef CONFIG_CGROUP_WRITEBACK
136
137static inline unsigned int __trace_wb_assign_cgroup(struct bdi_writeback *wb)
138{
139 return wb->memcg_css->cgroup->kn->ino;
140}
141
142static inline unsigned int __trace_wbc_assign_cgroup(struct writeback_control *wbc)
143{
144 if (wbc->wb)
145 return __trace_wb_assign_cgroup(wbc->wb);
146 else
147 return -1U;
148}
149#else /* CONFIG_CGROUP_WRITEBACK */
150
151static inline unsigned int __trace_wb_assign_cgroup(struct bdi_writeback *wb)
152{
153 return -1U;
154}
155
156static inline unsigned int __trace_wbc_assign_cgroup(struct writeback_control *wbc)
157{
158 return -1U;
159}
160
161#endif /* CONFIG_CGROUP_WRITEBACK */
162#endif /* CREATE_TRACE_POINTS */
163
164DECLARE_EVENT_CLASS(writeback_write_inode_template,
165
166 TP_PROTO(struct inode *inode, struct writeback_control *wbc),
167
168 TP_ARGS(inode, wbc),
169
170 TP_STRUCT__entry (
171 __array(char, name, 32)
172 __field(unsigned long, ino)
173 __field(int, sync_mode)
174 __field(unsigned int, cgroup_ino)
175 ),
176
177 TP_fast_assign(
178 strncpy(__entry->name,
179 dev_name(inode_to_bdi(inode)->dev), 32);
180 __entry->ino = inode->i_ino;
181 __entry->sync_mode = wbc->sync_mode;
182 __entry->cgroup_ino = __trace_wbc_assign_cgroup(wbc);
183 ),
184
185 TP_printk("bdi %s: ino=%lu sync_mode=%d cgroup_ino=%u",
186 __entry->name,
187 __entry->ino,
188 __entry->sync_mode,
189 __entry->cgroup_ino
190 )
191);
192
193DEFINE_EVENT(writeback_write_inode_template, writeback_write_inode_start,
194
195 TP_PROTO(struct inode *inode, struct writeback_control *wbc),
196
197 TP_ARGS(inode, wbc)
198);
199
200DEFINE_EVENT(writeback_write_inode_template, writeback_write_inode,
201
202 TP_PROTO(struct inode *inode, struct writeback_control *wbc),
203
204 TP_ARGS(inode, wbc)
205);
206
207DECLARE_EVENT_CLASS(writeback_work_class,
208 TP_PROTO(struct bdi_writeback *wb, struct wb_writeback_work *work),
209 TP_ARGS(wb, work),
210 TP_STRUCT__entry(
211 __array(char, name, 32)
212 __field(long, nr_pages)
213 __field(dev_t, sb_dev)
214 __field(int, sync_mode)
215 __field(int, for_kupdate)
216 __field(int, range_cyclic)
217 __field(int, for_background)
218 __field(int, reason)
219 __field(unsigned int, cgroup_ino)
220 ),
221 TP_fast_assign(
222 strncpy(__entry->name,
223 wb->bdi->dev ? dev_name(wb->bdi->dev) : "(unknown)", 32);
224 __entry->nr_pages = work->nr_pages;
225 __entry->sb_dev = work->sb ? work->sb->s_dev : 0;
226 __entry->sync_mode = work->sync_mode;
227 __entry->for_kupdate = work->for_kupdate;
228 __entry->range_cyclic = work->range_cyclic;
229 __entry->for_background = work->for_background;
230 __entry->reason = work->reason;
231 __entry->cgroup_ino = __trace_wb_assign_cgroup(wb);
232 ),
233 TP_printk("bdi %s: sb_dev %d:%d nr_pages=%ld sync_mode=%d "
234 "kupdate=%d range_cyclic=%d background=%d reason=%s cgroup_ino=%u",
235 __entry->name,
236 MAJOR(__entry->sb_dev), MINOR(__entry->sb_dev),
237 __entry->nr_pages,
238 __entry->sync_mode,
239 __entry->for_kupdate,
240 __entry->range_cyclic,
241 __entry->for_background,
242 __print_symbolic(__entry->reason, WB_WORK_REASON),
243 __entry->cgroup_ino
244 )
245);
246#define DEFINE_WRITEBACK_WORK_EVENT(name) \
247DEFINE_EVENT(writeback_work_class, name, \
248 TP_PROTO(struct bdi_writeback *wb, struct wb_writeback_work *work), \
249 TP_ARGS(wb, work))
250DEFINE_WRITEBACK_WORK_EVENT(writeback_queue);
251DEFINE_WRITEBACK_WORK_EVENT(writeback_exec);
252DEFINE_WRITEBACK_WORK_EVENT(writeback_start);
253DEFINE_WRITEBACK_WORK_EVENT(writeback_written);
254DEFINE_WRITEBACK_WORK_EVENT(writeback_wait);
255
256TRACE_EVENT(writeback_pages_written,
257 TP_PROTO(long pages_written),
258 TP_ARGS(pages_written),
259 TP_STRUCT__entry(
260 __field(long, pages)
261 ),
262 TP_fast_assign(
263 __entry->pages = pages_written;
264 ),
265 TP_printk("%ld", __entry->pages)
266);
267
268DECLARE_EVENT_CLASS(writeback_class,
269 TP_PROTO(struct bdi_writeback *wb),
270 TP_ARGS(wb),
271 TP_STRUCT__entry(
272 __array(char, name, 32)
273 __field(unsigned int, cgroup_ino)
274 ),
275 TP_fast_assign(
276 strncpy(__entry->name, dev_name(wb->bdi->dev), 32);
277 __entry->cgroup_ino = __trace_wb_assign_cgroup(wb);
278 ),
279 TP_printk("bdi %s: cgroup_ino=%u",
280 __entry->name,
281 __entry->cgroup_ino
282 )
283);
284#define DEFINE_WRITEBACK_EVENT(name) \
285DEFINE_EVENT(writeback_class, name, \
286 TP_PROTO(struct bdi_writeback *wb), \
287 TP_ARGS(wb))
288
289DEFINE_WRITEBACK_EVENT(writeback_nowork);
290DEFINE_WRITEBACK_EVENT(writeback_wake_background);
291
292TRACE_EVENT(writeback_bdi_register,
293 TP_PROTO(struct backing_dev_info *bdi),
294 TP_ARGS(bdi),
295 TP_STRUCT__entry(
296 __array(char, name, 32)
297 ),
298 TP_fast_assign(
299 strncpy(__entry->name, dev_name(bdi->dev), 32);
300 ),
301 TP_printk("bdi %s",
302 __entry->name
303 )
304);
305
306DECLARE_EVENT_CLASS(wbc_class,
307 TP_PROTO(struct writeback_control *wbc, struct backing_dev_info *bdi),
308 TP_ARGS(wbc, bdi),
309 TP_STRUCT__entry(
310 __array(char, name, 32)
311 __field(long, nr_to_write)
312 __field(long, pages_skipped)
313 __field(int, sync_mode)
314 __field(int, for_kupdate)
315 __field(int, for_background)
316 __field(int, for_reclaim)
317 __field(int, range_cyclic)
318 __field(long, range_start)
319 __field(long, range_end)
320 __field(unsigned int, cgroup_ino)
321 ),
322
323 TP_fast_assign(
324 strncpy(__entry->name, dev_name(bdi->dev), 32);
325 __entry->nr_to_write = wbc->nr_to_write;
326 __entry->pages_skipped = wbc->pages_skipped;
327 __entry->sync_mode = wbc->sync_mode;
328 __entry->for_kupdate = wbc->for_kupdate;
329 __entry->for_background = wbc->for_background;
330 __entry->for_reclaim = wbc->for_reclaim;
331 __entry->range_cyclic = wbc->range_cyclic;
332 __entry->range_start = (long)wbc->range_start;
333 __entry->range_end = (long)wbc->range_end;
334 __entry->cgroup_ino = __trace_wbc_assign_cgroup(wbc);
335 ),
336
337 TP_printk("bdi %s: towrt=%ld skip=%ld mode=%d kupd=%d "
338 "bgrd=%d reclm=%d cyclic=%d "
339 "start=0x%lx end=0x%lx cgroup_ino=%u",
340 __entry->name,
341 __entry->nr_to_write,
342 __entry->pages_skipped,
343 __entry->sync_mode,
344 __entry->for_kupdate,
345 __entry->for_background,
346 __entry->for_reclaim,
347 __entry->range_cyclic,
348 __entry->range_start,
349 __entry->range_end,
350 __entry->cgroup_ino
351 )
352)
353
354#define DEFINE_WBC_EVENT(name) \
355DEFINE_EVENT(wbc_class, name, \
356 TP_PROTO(struct writeback_control *wbc, struct backing_dev_info *bdi), \
357 TP_ARGS(wbc, bdi))
358DEFINE_WBC_EVENT(wbc_writepage);
359
360TRACE_EVENT(writeback_queue_io,
361 TP_PROTO(struct bdi_writeback *wb,
362 struct wb_writeback_work *work,
363 int moved),
364 TP_ARGS(wb, work, moved),
365 TP_STRUCT__entry(
366 __array(char, name, 32)
367 __field(unsigned long, older)
368 __field(long, age)
369 __field(int, moved)
370 __field(int, reason)
371 __field(unsigned int, cgroup_ino)
372 ),
373 TP_fast_assign(
374 unsigned long *older_than_this = work->older_than_this;
375 strncpy(__entry->name, dev_name(wb->bdi->dev), 32);
376 __entry->older = older_than_this ? *older_than_this : 0;
377 __entry->age = older_than_this ?
378 (jiffies - *older_than_this) * 1000 / HZ : -1;
379 __entry->moved = moved;
380 __entry->reason = work->reason;
381 __entry->cgroup_ino = __trace_wb_assign_cgroup(wb);
382 ),
383 TP_printk("bdi %s: older=%lu age=%ld enqueue=%d reason=%s cgroup_ino=%u",
384 __entry->name,
385 __entry->older, /* older_than_this in jiffies */
386 __entry->age, /* older_than_this in relative milliseconds */
387 __entry->moved,
388 __print_symbolic(__entry->reason, WB_WORK_REASON),
389 __entry->cgroup_ino
390 )
391);
392
393TRACE_EVENT(global_dirty_state,
394
395 TP_PROTO(unsigned long background_thresh,
396 unsigned long dirty_thresh
397 ),
398
399 TP_ARGS(background_thresh,
400 dirty_thresh
401 ),
402
403 TP_STRUCT__entry(
404 __field(unsigned long, nr_dirty)
405 __field(unsigned long, nr_writeback)
406 __field(unsigned long, nr_unstable)
407 __field(unsigned long, background_thresh)
408 __field(unsigned long, dirty_thresh)
409 __field(unsigned long, dirty_limit)
410 __field(unsigned long, nr_dirtied)
411 __field(unsigned long, nr_written)
412 ),
413
414 TP_fast_assign(
415 __entry->nr_dirty = global_page_state(NR_FILE_DIRTY);
416 __entry->nr_writeback = global_page_state(NR_WRITEBACK);
417 __entry->nr_unstable = global_page_state(NR_UNSTABLE_NFS);
418 __entry->nr_dirtied = global_page_state(NR_DIRTIED);
419 __entry->nr_written = global_page_state(NR_WRITTEN);
420 __entry->background_thresh = background_thresh;
421 __entry->dirty_thresh = dirty_thresh;
422 __entry->dirty_limit = global_wb_domain.dirty_limit;
423 ),
424
425 TP_printk("dirty=%lu writeback=%lu unstable=%lu "
426 "bg_thresh=%lu thresh=%lu limit=%lu "
427 "dirtied=%lu written=%lu",
428 __entry->nr_dirty,
429 __entry->nr_writeback,
430 __entry->nr_unstable,
431 __entry->background_thresh,
432 __entry->dirty_thresh,
433 __entry->dirty_limit,
434 __entry->nr_dirtied,
435 __entry->nr_written
436 )
437);
438
439#define KBps(x) ((x) << (PAGE_SHIFT - 10))
440
441TRACE_EVENT(bdi_dirty_ratelimit,
442
443 TP_PROTO(struct bdi_writeback *wb,
444 unsigned long dirty_rate,
445 unsigned long task_ratelimit),
446
447 TP_ARGS(wb, dirty_rate, task_ratelimit),
448
449 TP_STRUCT__entry(
450 __array(char, bdi, 32)
451 __field(unsigned long, write_bw)
452 __field(unsigned long, avg_write_bw)
453 __field(unsigned long, dirty_rate)
454 __field(unsigned long, dirty_ratelimit)
455 __field(unsigned long, task_ratelimit)
456 __field(unsigned long, balanced_dirty_ratelimit)
457 __field(unsigned int, cgroup_ino)
458 ),
459
460 TP_fast_assign(
461 strlcpy(__entry->bdi, dev_name(wb->bdi->dev), 32);
462 __entry->write_bw = KBps(wb->write_bandwidth);
463 __entry->avg_write_bw = KBps(wb->avg_write_bandwidth);
464 __entry->dirty_rate = KBps(dirty_rate);
465 __entry->dirty_ratelimit = KBps(wb->dirty_ratelimit);
466 __entry->task_ratelimit = KBps(task_ratelimit);
467 __entry->balanced_dirty_ratelimit =
468 KBps(wb->balanced_dirty_ratelimit);
469 __entry->cgroup_ino = __trace_wb_assign_cgroup(wb);
470 ),
471
472 TP_printk("bdi %s: "
473 "write_bw=%lu awrite_bw=%lu dirty_rate=%lu "
474 "dirty_ratelimit=%lu task_ratelimit=%lu "
475 "balanced_dirty_ratelimit=%lu cgroup_ino=%u",
476 __entry->bdi,
477 __entry->write_bw, /* write bandwidth */
478 __entry->avg_write_bw, /* avg write bandwidth */
479 __entry->dirty_rate, /* bdi dirty rate */
480 __entry->dirty_ratelimit, /* base ratelimit */
481 __entry->task_ratelimit, /* ratelimit with position control */
482 __entry->balanced_dirty_ratelimit, /* the balanced ratelimit */
483 __entry->cgroup_ino
484 )
485);
486
487TRACE_EVENT(balance_dirty_pages,
488
489 TP_PROTO(struct bdi_writeback *wb,
490 unsigned long thresh,
491 unsigned long bg_thresh,
492 unsigned long dirty,
493 unsigned long bdi_thresh,
494 unsigned long bdi_dirty,
495 unsigned long dirty_ratelimit,
496 unsigned long task_ratelimit,
497 unsigned long dirtied,
498 unsigned long period,
499 long pause,
500 unsigned long start_time),
501
502 TP_ARGS(wb, thresh, bg_thresh, dirty, bdi_thresh, bdi_dirty,
503 dirty_ratelimit, task_ratelimit,
504 dirtied, period, pause, start_time),
505
506 TP_STRUCT__entry(
507 __array( char, bdi, 32)
508 __field(unsigned long, limit)
509 __field(unsigned long, setpoint)
510 __field(unsigned long, dirty)
511 __field(unsigned long, bdi_setpoint)
512 __field(unsigned long, bdi_dirty)
513 __field(unsigned long, dirty_ratelimit)
514 __field(unsigned long, task_ratelimit)
515 __field(unsigned int, dirtied)
516 __field(unsigned int, dirtied_pause)
517 __field(unsigned long, paused)
518 __field( long, pause)
519 __field(unsigned long, period)
520 __field( long, think)
521 __field(unsigned int, cgroup_ino)
522 ),
523
524 TP_fast_assign(
525 unsigned long freerun = (thresh + bg_thresh) / 2;
526 strlcpy(__entry->bdi, dev_name(wb->bdi->dev), 32);
527
528 __entry->limit = global_wb_domain.dirty_limit;
529 __entry->setpoint = (global_wb_domain.dirty_limit +
530 freerun) / 2;
531 __entry->dirty = dirty;
532 __entry->bdi_setpoint = __entry->setpoint *
533 bdi_thresh / (thresh + 1);
534 __entry->bdi_dirty = bdi_dirty;
535 __entry->dirty_ratelimit = KBps(dirty_ratelimit);
536 __entry->task_ratelimit = KBps(task_ratelimit);
537 __entry->dirtied = dirtied;
538 __entry->dirtied_pause = current->nr_dirtied_pause;
539 __entry->think = current->dirty_paused_when == 0 ? 0 :
540 (long)(jiffies - current->dirty_paused_when) * 1000/HZ;
541 __entry->period = period * 1000 / HZ;
542 __entry->pause = pause * 1000 / HZ;
543 __entry->paused = (jiffies - start_time) * 1000 / HZ;
544 __entry->cgroup_ino = __trace_wb_assign_cgroup(wb);
545 ),
546
547
548 TP_printk("bdi %s: "
549 "limit=%lu setpoint=%lu dirty=%lu "
550 "bdi_setpoint=%lu bdi_dirty=%lu "
551 "dirty_ratelimit=%lu task_ratelimit=%lu "
552 "dirtied=%u dirtied_pause=%u "
553 "paused=%lu pause=%ld period=%lu think=%ld cgroup_ino=%u",
554 __entry->bdi,
555 __entry->limit,
556 __entry->setpoint,
557 __entry->dirty,
558 __entry->bdi_setpoint,
559 __entry->bdi_dirty,
560 __entry->dirty_ratelimit,
561 __entry->task_ratelimit,
562 __entry->dirtied,
563 __entry->dirtied_pause,
564 __entry->paused, /* ms */
565 __entry->pause, /* ms */
566 __entry->period, /* ms */
567 __entry->think, /* ms */
568 __entry->cgroup_ino
569 )
570);
571
572TRACE_EVENT(writeback_sb_inodes_requeue,
573
574 TP_PROTO(struct inode *inode),
575 TP_ARGS(inode),
576
577 TP_STRUCT__entry(
578 __array(char, name, 32)
579 __field(unsigned long, ino)
580 __field(unsigned long, state)
581 __field(unsigned long, dirtied_when)
582 __field(unsigned int, cgroup_ino)
583 ),
584
585 TP_fast_assign(
586 strncpy(__entry->name,
587 dev_name(inode_to_bdi(inode)->dev), 32);
588 __entry->ino = inode->i_ino;
589 __entry->state = inode->i_state;
590 __entry->dirtied_when = inode->dirtied_when;
591 __entry->cgroup_ino = __trace_wb_assign_cgroup(inode_to_wb(inode));
592 ),
593
594 TP_printk("bdi %s: ino=%lu state=%s dirtied_when=%lu age=%lu cgroup_ino=%u",
595 __entry->name,
596 __entry->ino,
597 show_inode_state(__entry->state),
598 __entry->dirtied_when,
599 (jiffies - __entry->dirtied_when) / HZ,
600 __entry->cgroup_ino
601 )
602);
603
604DECLARE_EVENT_CLASS(writeback_congest_waited_template,
605
606 TP_PROTO(unsigned int usec_timeout, unsigned int usec_delayed),
607
608 TP_ARGS(usec_timeout, usec_delayed),
609
610 TP_STRUCT__entry(
611 __field( unsigned int, usec_timeout )
612 __field( unsigned int, usec_delayed )
613 ),
614
615 TP_fast_assign(
616 __entry->usec_timeout = usec_timeout;
617 __entry->usec_delayed = usec_delayed;
618 ),
619
620 TP_printk("usec_timeout=%u usec_delayed=%u",
621 __entry->usec_timeout,
622 __entry->usec_delayed)
623);
624
625DEFINE_EVENT(writeback_congest_waited_template, writeback_congestion_wait,
626
627 TP_PROTO(unsigned int usec_timeout, unsigned int usec_delayed),
628
629 TP_ARGS(usec_timeout, usec_delayed)
630);
631
632DEFINE_EVENT(writeback_congest_waited_template, writeback_wait_iff_congested,
633
634 TP_PROTO(unsigned int usec_timeout, unsigned int usec_delayed),
635
636 TP_ARGS(usec_timeout, usec_delayed)
637);
638
639DECLARE_EVENT_CLASS(writeback_single_inode_template,
640
641 TP_PROTO(struct inode *inode,
642 struct writeback_control *wbc,
643 unsigned long nr_to_write
644 ),
645
646 TP_ARGS(inode, wbc, nr_to_write),
647
648 TP_STRUCT__entry(
649 __array(char, name, 32)
650 __field(unsigned long, ino)
651 __field(unsigned long, state)
652 __field(unsigned long, dirtied_when)
653 __field(unsigned long, writeback_index)
654 __field(long, nr_to_write)
655 __field(unsigned long, wrote)
656 __field(unsigned int, cgroup_ino)
657 ),
658
659 TP_fast_assign(
660 strncpy(__entry->name,
661 dev_name(inode_to_bdi(inode)->dev), 32);
662 __entry->ino = inode->i_ino;
663 __entry->state = inode->i_state;
664 __entry->dirtied_when = inode->dirtied_when;
665 __entry->writeback_index = inode->i_mapping->writeback_index;
666 __entry->nr_to_write = nr_to_write;
667 __entry->wrote = nr_to_write - wbc->nr_to_write;
668 __entry->cgroup_ino = __trace_wbc_assign_cgroup(wbc);
669 ),
670
671 TP_printk("bdi %s: ino=%lu state=%s dirtied_when=%lu age=%lu "
672 "index=%lu to_write=%ld wrote=%lu cgroup_ino=%u",
673 __entry->name,
674 __entry->ino,
675 show_inode_state(__entry->state),
676 __entry->dirtied_when,
677 (jiffies - __entry->dirtied_when) / HZ,
678 __entry->writeback_index,
679 __entry->nr_to_write,
680 __entry->wrote,
681 __entry->cgroup_ino
682 )
683);
684
685DEFINE_EVENT(writeback_single_inode_template, writeback_single_inode_start,
686 TP_PROTO(struct inode *inode,
687 struct writeback_control *wbc,
688 unsigned long nr_to_write),
689 TP_ARGS(inode, wbc, nr_to_write)
690);
691
692DEFINE_EVENT(writeback_single_inode_template, writeback_single_inode,
693 TP_PROTO(struct inode *inode,
694 struct writeback_control *wbc,
695 unsigned long nr_to_write),
696 TP_ARGS(inode, wbc, nr_to_write)
697);
698
699DECLARE_EVENT_CLASS(writeback_lazytime_template,
700 TP_PROTO(struct inode *inode),
701
702 TP_ARGS(inode),
703
704 TP_STRUCT__entry(
705 __field( dev_t, dev )
706 __field(unsigned long, ino )
707 __field(unsigned long, state )
708 __field( __u16, mode )
709 __field(unsigned long, dirtied_when )
710 ),
711
712 TP_fast_assign(
713 __entry->dev = inode->i_sb->s_dev;
714 __entry->ino = inode->i_ino;
715 __entry->state = inode->i_state;
716 __entry->mode = inode->i_mode;
717 __entry->dirtied_when = inode->dirtied_when;
718 ),
719
720 TP_printk("dev %d,%d ino %lu dirtied %lu state %s mode 0%o",
721 MAJOR(__entry->dev), MINOR(__entry->dev),
722 __entry->ino, __entry->dirtied_when,
723 show_inode_state(__entry->state), __entry->mode)
724);
725
726DEFINE_EVENT(writeback_lazytime_template, writeback_lazytime,
727 TP_PROTO(struct inode *inode),
728
729 TP_ARGS(inode)
730);
731
732DEFINE_EVENT(writeback_lazytime_template, writeback_lazytime_iput,
733 TP_PROTO(struct inode *inode),
734
735 TP_ARGS(inode)
736);
737
738DEFINE_EVENT(writeback_lazytime_template, writeback_dirty_inode_enqueue,
739
740 TP_PROTO(struct inode *inode),
741
742 TP_ARGS(inode)
743);
744
745#endif /* _TRACE_WRITEBACK_H */
746
747/* This part must be outside protection */
748#include <trace/define_trace.h>