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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_DIRTY_TIME_EXPIRED, "I_DIRTY_TIME_EXPIRED"}, \
24 {I_REFERENCED, "I_REFERENCED"} \
25 )
26
27/* enums need to be exported to user space */
28#undef EM
29#undef EMe
30#define EM(a,b) TRACE_DEFINE_ENUM(a);
31#define EMe(a,b) TRACE_DEFINE_ENUM(a);
32
33#define WB_WORK_REASON \
34 EM( WB_REASON_BACKGROUND, "background") \
35 EM( WB_REASON_VMSCAN, "vmscan") \
36 EM( WB_REASON_SYNC, "sync") \
37 EM( WB_REASON_PERIODIC, "periodic") \
38 EM( WB_REASON_LAPTOP_TIMER, "laptop_timer") \
39 EM( WB_REASON_FREE_MORE_MEM, "free_more_memory") \
40 EM( WB_REASON_FS_FREE_SPACE, "fs_free_space") \
41 EMe(WB_REASON_FORKER_THREAD, "forker_thread")
42
43WB_WORK_REASON
44
45/*
46 * Now redefine the EM() and EMe() macros to map the enums to the strings
47 * that will be printed in the output.
48 */
49#undef EM
50#undef EMe
51#define EM(a,b) { a, b },
52#define EMe(a,b) { a, b }
53
54struct wb_writeback_work;
55
56DECLARE_EVENT_CLASS(writeback_page_template,
57
58 TP_PROTO(struct page *page, struct address_space *mapping),
59
60 TP_ARGS(page, mapping),
61
62 TP_STRUCT__entry (
63 __array(char, name, 32)
64 __field(unsigned long, ino)
65 __field(pgoff_t, index)
66 ),
67
68 TP_fast_assign(
69 strscpy_pad(__entry->name,
70 mapping ? dev_name(inode_to_bdi(mapping->host)->dev) : "(unknown)",
71 32);
72 __entry->ino = mapping ? mapping->host->i_ino : 0;
73 __entry->index = page->index;
74 ),
75
76 TP_printk("bdi %s: ino=%lu index=%lu",
77 __entry->name,
78 __entry->ino,
79 __entry->index
80 )
81);
82
83DEFINE_EVENT(writeback_page_template, writeback_dirty_page,
84
85 TP_PROTO(struct page *page, struct address_space *mapping),
86
87 TP_ARGS(page, mapping)
88);
89
90DEFINE_EVENT(writeback_page_template, wait_on_page_writeback,
91
92 TP_PROTO(struct page *page, struct address_space *mapping),
93
94 TP_ARGS(page, mapping)
95);
96
97DECLARE_EVENT_CLASS(writeback_dirty_inode_template,
98
99 TP_PROTO(struct inode *inode, int flags),
100
101 TP_ARGS(inode, flags),
102
103 TP_STRUCT__entry (
104 __array(char, name, 32)
105 __field(unsigned long, ino)
106 __field(unsigned long, state)
107 __field(unsigned long, flags)
108 ),
109
110 TP_fast_assign(
111 struct backing_dev_info *bdi = inode_to_bdi(inode);
112
113 /* may be called for files on pseudo FSes w/ unregistered bdi */
114 strscpy_pad(__entry->name,
115 bdi->dev ? dev_name(bdi->dev) : "(unknown)", 32);
116 __entry->ino = inode->i_ino;
117 __entry->state = inode->i_state;
118 __entry->flags = flags;
119 ),
120
121 TP_printk("bdi %s: ino=%lu state=%s flags=%s",
122 __entry->name,
123 __entry->ino,
124 show_inode_state(__entry->state),
125 show_inode_state(__entry->flags)
126 )
127);
128
129DEFINE_EVENT(writeback_dirty_inode_template, writeback_mark_inode_dirty,
130
131 TP_PROTO(struct inode *inode, int flags),
132
133 TP_ARGS(inode, flags)
134);
135
136DEFINE_EVENT(writeback_dirty_inode_template, writeback_dirty_inode_start,
137
138 TP_PROTO(struct inode *inode, int flags),
139
140 TP_ARGS(inode, flags)
141);
142
143DEFINE_EVENT(writeback_dirty_inode_template, writeback_dirty_inode,
144
145 TP_PROTO(struct inode *inode, int flags),
146
147 TP_ARGS(inode, flags)
148);
149
150#ifdef CREATE_TRACE_POINTS
151#ifdef CONFIG_CGROUP_WRITEBACK
152
153static inline unsigned int __trace_wb_assign_cgroup(struct bdi_writeback *wb)
154{
155 return wb->memcg_css->cgroup->kn->id.ino;
156}
157
158static inline unsigned int __trace_wbc_assign_cgroup(struct writeback_control *wbc)
159{
160 if (wbc->wb)
161 return __trace_wb_assign_cgroup(wbc->wb);
162 else
163 return -1U;
164}
165#else /* CONFIG_CGROUP_WRITEBACK */
166
167static inline unsigned int __trace_wb_assign_cgroup(struct bdi_writeback *wb)
168{
169 return -1U;
170}
171
172static inline unsigned int __trace_wbc_assign_cgroup(struct writeback_control *wbc)
173{
174 return -1U;
175}
176
177#endif /* CONFIG_CGROUP_WRITEBACK */
178#endif /* CREATE_TRACE_POINTS */
179
180#ifdef CONFIG_CGROUP_WRITEBACK
181TRACE_EVENT(inode_foreign_history,
182
183 TP_PROTO(struct inode *inode, struct writeback_control *wbc,
184 unsigned int history),
185
186 TP_ARGS(inode, wbc, history),
187
188 TP_STRUCT__entry(
189 __array(char, name, 32)
190 __field(unsigned long, ino)
191 __field(unsigned int, cgroup_ino)
192 __field(unsigned int, history)
193 ),
194
195 TP_fast_assign(
196 strncpy(__entry->name, dev_name(inode_to_bdi(inode)->dev), 32);
197 __entry->ino = inode->i_ino;
198 __entry->cgroup_ino = __trace_wbc_assign_cgroup(wbc);
199 __entry->history = history;
200 ),
201
202 TP_printk("bdi %s: ino=%lu cgroup_ino=%u history=0x%x",
203 __entry->name,
204 __entry->ino,
205 __entry->cgroup_ino,
206 __entry->history
207 )
208);
209
210TRACE_EVENT(inode_switch_wbs,
211
212 TP_PROTO(struct inode *inode, struct bdi_writeback *old_wb,
213 struct bdi_writeback *new_wb),
214
215 TP_ARGS(inode, old_wb, new_wb),
216
217 TP_STRUCT__entry(
218 __array(char, name, 32)
219 __field(unsigned long, ino)
220 __field(unsigned int, old_cgroup_ino)
221 __field(unsigned int, new_cgroup_ino)
222 ),
223
224 TP_fast_assign(
225 strncpy(__entry->name, dev_name(old_wb->bdi->dev), 32);
226 __entry->ino = inode->i_ino;
227 __entry->old_cgroup_ino = __trace_wb_assign_cgroup(old_wb);
228 __entry->new_cgroup_ino = __trace_wb_assign_cgroup(new_wb);
229 ),
230
231 TP_printk("bdi %s: ino=%lu old_cgroup_ino=%u new_cgroup_ino=%u",
232 __entry->name,
233 __entry->ino,
234 __entry->old_cgroup_ino,
235 __entry->new_cgroup_ino
236 )
237);
238
239TRACE_EVENT(track_foreign_dirty,
240
241 TP_PROTO(struct page *page, struct bdi_writeback *wb),
242
243 TP_ARGS(page, wb),
244
245 TP_STRUCT__entry(
246 __array(char, name, 32)
247 __field(u64, bdi_id)
248 __field(unsigned long, ino)
249 __field(unsigned int, memcg_id)
250 __field(unsigned int, cgroup_ino)
251 __field(unsigned int, page_cgroup_ino)
252 ),
253
254 TP_fast_assign(
255 struct address_space *mapping = page_mapping(page);
256 struct inode *inode = mapping ? mapping->host : NULL;
257
258 strncpy(__entry->name, dev_name(wb->bdi->dev), 32);
259 __entry->bdi_id = wb->bdi->id;
260 __entry->ino = inode ? inode->i_ino : 0;
261 __entry->memcg_id = wb->memcg_css->id;
262 __entry->cgroup_ino = __trace_wb_assign_cgroup(wb);
263 __entry->page_cgroup_ino = page->mem_cgroup->css.cgroup->kn->id.ino;
264 ),
265
266 TP_printk("bdi %s[%llu]: ino=%lu memcg_id=%u cgroup_ino=%u page_cgroup_ino=%u",
267 __entry->name,
268 __entry->bdi_id,
269 __entry->ino,
270 __entry->memcg_id,
271 __entry->cgroup_ino,
272 __entry->page_cgroup_ino
273 )
274);
275
276TRACE_EVENT(flush_foreign,
277
278 TP_PROTO(struct bdi_writeback *wb, unsigned int frn_bdi_id,
279 unsigned int frn_memcg_id),
280
281 TP_ARGS(wb, frn_bdi_id, frn_memcg_id),
282
283 TP_STRUCT__entry(
284 __array(char, name, 32)
285 __field(unsigned int, cgroup_ino)
286 __field(unsigned int, frn_bdi_id)
287 __field(unsigned int, frn_memcg_id)
288 ),
289
290 TP_fast_assign(
291 strncpy(__entry->name, dev_name(wb->bdi->dev), 32);
292 __entry->cgroup_ino = __trace_wb_assign_cgroup(wb);
293 __entry->frn_bdi_id = frn_bdi_id;
294 __entry->frn_memcg_id = frn_memcg_id;
295 ),
296
297 TP_printk("bdi %s: cgroup_ino=%u frn_bdi_id=%u frn_memcg_id=%u",
298 __entry->name,
299 __entry->cgroup_ino,
300 __entry->frn_bdi_id,
301 __entry->frn_memcg_id
302 )
303);
304#endif
305
306DECLARE_EVENT_CLASS(writeback_write_inode_template,
307
308 TP_PROTO(struct inode *inode, struct writeback_control *wbc),
309
310 TP_ARGS(inode, wbc),
311
312 TP_STRUCT__entry (
313 __array(char, name, 32)
314 __field(unsigned long, ino)
315 __field(int, sync_mode)
316 __field(unsigned int, cgroup_ino)
317 ),
318
319 TP_fast_assign(
320 strscpy_pad(__entry->name,
321 dev_name(inode_to_bdi(inode)->dev), 32);
322 __entry->ino = inode->i_ino;
323 __entry->sync_mode = wbc->sync_mode;
324 __entry->cgroup_ino = __trace_wbc_assign_cgroup(wbc);
325 ),
326
327 TP_printk("bdi %s: ino=%lu sync_mode=%d cgroup_ino=%u",
328 __entry->name,
329 __entry->ino,
330 __entry->sync_mode,
331 __entry->cgroup_ino
332 )
333);
334
335DEFINE_EVENT(writeback_write_inode_template, writeback_write_inode_start,
336
337 TP_PROTO(struct inode *inode, struct writeback_control *wbc),
338
339 TP_ARGS(inode, wbc)
340);
341
342DEFINE_EVENT(writeback_write_inode_template, writeback_write_inode,
343
344 TP_PROTO(struct inode *inode, struct writeback_control *wbc),
345
346 TP_ARGS(inode, wbc)
347);
348
349DECLARE_EVENT_CLASS(writeback_work_class,
350 TP_PROTO(struct bdi_writeback *wb, struct wb_writeback_work *work),
351 TP_ARGS(wb, work),
352 TP_STRUCT__entry(
353 __array(char, name, 32)
354 __field(long, nr_pages)
355 __field(dev_t, sb_dev)
356 __field(int, sync_mode)
357 __field(int, for_kupdate)
358 __field(int, range_cyclic)
359 __field(int, for_background)
360 __field(int, reason)
361 __field(unsigned int, cgroup_ino)
362 ),
363 TP_fast_assign(
364 strscpy_pad(__entry->name,
365 wb->bdi->dev ? dev_name(wb->bdi->dev) :
366 "(unknown)", 32);
367 __entry->nr_pages = work->nr_pages;
368 __entry->sb_dev = work->sb ? work->sb->s_dev : 0;
369 __entry->sync_mode = work->sync_mode;
370 __entry->for_kupdate = work->for_kupdate;
371 __entry->range_cyclic = work->range_cyclic;
372 __entry->for_background = work->for_background;
373 __entry->reason = work->reason;
374 __entry->cgroup_ino = __trace_wb_assign_cgroup(wb);
375 ),
376 TP_printk("bdi %s: sb_dev %d:%d nr_pages=%ld sync_mode=%d "
377 "kupdate=%d range_cyclic=%d background=%d reason=%s cgroup_ino=%u",
378 __entry->name,
379 MAJOR(__entry->sb_dev), MINOR(__entry->sb_dev),
380 __entry->nr_pages,
381 __entry->sync_mode,
382 __entry->for_kupdate,
383 __entry->range_cyclic,
384 __entry->for_background,
385 __print_symbolic(__entry->reason, WB_WORK_REASON),
386 __entry->cgroup_ino
387 )
388);
389#define DEFINE_WRITEBACK_WORK_EVENT(name) \
390DEFINE_EVENT(writeback_work_class, name, \
391 TP_PROTO(struct bdi_writeback *wb, struct wb_writeback_work *work), \
392 TP_ARGS(wb, work))
393DEFINE_WRITEBACK_WORK_EVENT(writeback_queue);
394DEFINE_WRITEBACK_WORK_EVENT(writeback_exec);
395DEFINE_WRITEBACK_WORK_EVENT(writeback_start);
396DEFINE_WRITEBACK_WORK_EVENT(writeback_written);
397DEFINE_WRITEBACK_WORK_EVENT(writeback_wait);
398
399TRACE_EVENT(writeback_pages_written,
400 TP_PROTO(long pages_written),
401 TP_ARGS(pages_written),
402 TP_STRUCT__entry(
403 __field(long, pages)
404 ),
405 TP_fast_assign(
406 __entry->pages = pages_written;
407 ),
408 TP_printk("%ld", __entry->pages)
409);
410
411DECLARE_EVENT_CLASS(writeback_class,
412 TP_PROTO(struct bdi_writeback *wb),
413 TP_ARGS(wb),
414 TP_STRUCT__entry(
415 __array(char, name, 32)
416 __field(unsigned int, cgroup_ino)
417 ),
418 TP_fast_assign(
419 strscpy_pad(__entry->name, dev_name(wb->bdi->dev), 32);
420 __entry->cgroup_ino = __trace_wb_assign_cgroup(wb);
421 ),
422 TP_printk("bdi %s: cgroup_ino=%u",
423 __entry->name,
424 __entry->cgroup_ino
425 )
426);
427#define DEFINE_WRITEBACK_EVENT(name) \
428DEFINE_EVENT(writeback_class, name, \
429 TP_PROTO(struct bdi_writeback *wb), \
430 TP_ARGS(wb))
431
432DEFINE_WRITEBACK_EVENT(writeback_wake_background);
433
434TRACE_EVENT(writeback_bdi_register,
435 TP_PROTO(struct backing_dev_info *bdi),
436 TP_ARGS(bdi),
437 TP_STRUCT__entry(
438 __array(char, name, 32)
439 ),
440 TP_fast_assign(
441 strscpy_pad(__entry->name, dev_name(bdi->dev), 32);
442 ),
443 TP_printk("bdi %s",
444 __entry->name
445 )
446);
447
448DECLARE_EVENT_CLASS(wbc_class,
449 TP_PROTO(struct writeback_control *wbc, struct backing_dev_info *bdi),
450 TP_ARGS(wbc, bdi),
451 TP_STRUCT__entry(
452 __array(char, name, 32)
453 __field(long, nr_to_write)
454 __field(long, pages_skipped)
455 __field(int, sync_mode)
456 __field(int, for_kupdate)
457 __field(int, for_background)
458 __field(int, for_reclaim)
459 __field(int, range_cyclic)
460 __field(long, range_start)
461 __field(long, range_end)
462 __field(unsigned int, cgroup_ino)
463 ),
464
465 TP_fast_assign(
466 strscpy_pad(__entry->name, dev_name(bdi->dev), 32);
467 __entry->nr_to_write = wbc->nr_to_write;
468 __entry->pages_skipped = wbc->pages_skipped;
469 __entry->sync_mode = wbc->sync_mode;
470 __entry->for_kupdate = wbc->for_kupdate;
471 __entry->for_background = wbc->for_background;
472 __entry->for_reclaim = wbc->for_reclaim;
473 __entry->range_cyclic = wbc->range_cyclic;
474 __entry->range_start = (long)wbc->range_start;
475 __entry->range_end = (long)wbc->range_end;
476 __entry->cgroup_ino = __trace_wbc_assign_cgroup(wbc);
477 ),
478
479 TP_printk("bdi %s: towrt=%ld skip=%ld mode=%d kupd=%d "
480 "bgrd=%d reclm=%d cyclic=%d "
481 "start=0x%lx end=0x%lx cgroup_ino=%u",
482 __entry->name,
483 __entry->nr_to_write,
484 __entry->pages_skipped,
485 __entry->sync_mode,
486 __entry->for_kupdate,
487 __entry->for_background,
488 __entry->for_reclaim,
489 __entry->range_cyclic,
490 __entry->range_start,
491 __entry->range_end,
492 __entry->cgroup_ino
493 )
494)
495
496#define DEFINE_WBC_EVENT(name) \
497DEFINE_EVENT(wbc_class, name, \
498 TP_PROTO(struct writeback_control *wbc, struct backing_dev_info *bdi), \
499 TP_ARGS(wbc, bdi))
500DEFINE_WBC_EVENT(wbc_writepage);
501
502TRACE_EVENT(writeback_queue_io,
503 TP_PROTO(struct bdi_writeback *wb,
504 struct wb_writeback_work *work,
505 int moved),
506 TP_ARGS(wb, work, moved),
507 TP_STRUCT__entry(
508 __array(char, name, 32)
509 __field(unsigned long, older)
510 __field(long, age)
511 __field(int, moved)
512 __field(int, reason)
513 __field(unsigned int, cgroup_ino)
514 ),
515 TP_fast_assign(
516 unsigned long *older_than_this = work->older_than_this;
517 strscpy_pad(__entry->name, dev_name(wb->bdi->dev), 32);
518 __entry->older = older_than_this ? *older_than_this : 0;
519 __entry->age = older_than_this ?
520 (jiffies - *older_than_this) * 1000 / HZ : -1;
521 __entry->moved = moved;
522 __entry->reason = work->reason;
523 __entry->cgroup_ino = __trace_wb_assign_cgroup(wb);
524 ),
525 TP_printk("bdi %s: older=%lu age=%ld enqueue=%d reason=%s cgroup_ino=%u",
526 __entry->name,
527 __entry->older, /* older_than_this in jiffies */
528 __entry->age, /* older_than_this in relative milliseconds */
529 __entry->moved,
530 __print_symbolic(__entry->reason, WB_WORK_REASON),
531 __entry->cgroup_ino
532 )
533);
534
535TRACE_EVENT(global_dirty_state,
536
537 TP_PROTO(unsigned long background_thresh,
538 unsigned long dirty_thresh
539 ),
540
541 TP_ARGS(background_thresh,
542 dirty_thresh
543 ),
544
545 TP_STRUCT__entry(
546 __field(unsigned long, nr_dirty)
547 __field(unsigned long, nr_writeback)
548 __field(unsigned long, nr_unstable)
549 __field(unsigned long, background_thresh)
550 __field(unsigned long, dirty_thresh)
551 __field(unsigned long, dirty_limit)
552 __field(unsigned long, nr_dirtied)
553 __field(unsigned long, nr_written)
554 ),
555
556 TP_fast_assign(
557 __entry->nr_dirty = global_node_page_state(NR_FILE_DIRTY);
558 __entry->nr_writeback = global_node_page_state(NR_WRITEBACK);
559 __entry->nr_unstable = global_node_page_state(NR_UNSTABLE_NFS);
560 __entry->nr_dirtied = global_node_page_state(NR_DIRTIED);
561 __entry->nr_written = global_node_page_state(NR_WRITTEN);
562 __entry->background_thresh = background_thresh;
563 __entry->dirty_thresh = dirty_thresh;
564 __entry->dirty_limit = global_wb_domain.dirty_limit;
565 ),
566
567 TP_printk("dirty=%lu writeback=%lu unstable=%lu "
568 "bg_thresh=%lu thresh=%lu limit=%lu "
569 "dirtied=%lu written=%lu",
570 __entry->nr_dirty,
571 __entry->nr_writeback,
572 __entry->nr_unstable,
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(unsigned int, cgroup_ino)
600 ),
601
602 TP_fast_assign(
603 strscpy_pad(__entry->bdi, dev_name(wb->bdi->dev), 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=%u",
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 __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(unsigned int, cgroup_ino)
664 ),
665
666 TP_fast_assign(
667 unsigned long freerun = (thresh + bg_thresh) / 2;
668 strscpy_pad(__entry->bdi, dev_name(wb->bdi->dev), 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=%u",
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 __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(unsigned long, ino)
722 __field(unsigned long, state)
723 __field(unsigned long, dirtied_when)
724 __field(unsigned int, cgroup_ino)
725 ),
726
727 TP_fast_assign(
728 strscpy_pad(__entry->name,
729 dev_name(inode_to_bdi(inode)->dev), 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=%u",
737 __entry->name,
738 __entry->ino,
739 show_inode_state(__entry->state),
740 __entry->dirtied_when,
741 (jiffies - __entry->dirtied_when) / HZ,
742 __entry->cgroup_ino
743 )
744);
745
746DECLARE_EVENT_CLASS(writeback_congest_waited_template,
747
748 TP_PROTO(unsigned int usec_timeout, unsigned int usec_delayed),
749
750 TP_ARGS(usec_timeout, usec_delayed),
751
752 TP_STRUCT__entry(
753 __field( unsigned int, usec_timeout )
754 __field( unsigned int, usec_delayed )
755 ),
756
757 TP_fast_assign(
758 __entry->usec_timeout = usec_timeout;
759 __entry->usec_delayed = usec_delayed;
760 ),
761
762 TP_printk("usec_timeout=%u usec_delayed=%u",
763 __entry->usec_timeout,
764 __entry->usec_delayed)
765);
766
767DEFINE_EVENT(writeback_congest_waited_template, writeback_congestion_wait,
768
769 TP_PROTO(unsigned int usec_timeout, unsigned int usec_delayed),
770
771 TP_ARGS(usec_timeout, usec_delayed)
772);
773
774DEFINE_EVENT(writeback_congest_waited_template, writeback_wait_iff_congested,
775
776 TP_PROTO(unsigned int usec_timeout, unsigned int usec_delayed),
777
778 TP_ARGS(usec_timeout, usec_delayed)
779);
780
781DECLARE_EVENT_CLASS(writeback_single_inode_template,
782
783 TP_PROTO(struct inode *inode,
784 struct writeback_control *wbc,
785 unsigned long nr_to_write
786 ),
787
788 TP_ARGS(inode, wbc, nr_to_write),
789
790 TP_STRUCT__entry(
791 __array(char, name, 32)
792 __field(unsigned long, ino)
793 __field(unsigned long, state)
794 __field(unsigned long, dirtied_when)
795 __field(unsigned long, writeback_index)
796 __field(long, nr_to_write)
797 __field(unsigned long, wrote)
798 __field(unsigned int, cgroup_ino)
799 ),
800
801 TP_fast_assign(
802 strscpy_pad(__entry->name,
803 dev_name(inode_to_bdi(inode)->dev), 32);
804 __entry->ino = inode->i_ino;
805 __entry->state = inode->i_state;
806 __entry->dirtied_when = inode->dirtied_when;
807 __entry->writeback_index = inode->i_mapping->writeback_index;
808 __entry->nr_to_write = nr_to_write;
809 __entry->wrote = nr_to_write - wbc->nr_to_write;
810 __entry->cgroup_ino = __trace_wbc_assign_cgroup(wbc);
811 ),
812
813 TP_printk("bdi %s: ino=%lu state=%s dirtied_when=%lu age=%lu "
814 "index=%lu to_write=%ld wrote=%lu cgroup_ino=%u",
815 __entry->name,
816 __entry->ino,
817 show_inode_state(__entry->state),
818 __entry->dirtied_when,
819 (jiffies - __entry->dirtied_when) / HZ,
820 __entry->writeback_index,
821 __entry->nr_to_write,
822 __entry->wrote,
823 __entry->cgroup_ino
824 )
825);
826
827DEFINE_EVENT(writeback_single_inode_template, writeback_single_inode_start,
828 TP_PROTO(struct inode *inode,
829 struct writeback_control *wbc,
830 unsigned long nr_to_write),
831 TP_ARGS(inode, wbc, nr_to_write)
832);
833
834DEFINE_EVENT(writeback_single_inode_template, writeback_single_inode,
835 TP_PROTO(struct inode *inode,
836 struct writeback_control *wbc,
837 unsigned long nr_to_write),
838 TP_ARGS(inode, wbc, nr_to_write)
839);
840
841DECLARE_EVENT_CLASS(writeback_inode_template,
842 TP_PROTO(struct inode *inode),
843
844 TP_ARGS(inode),
845
846 TP_STRUCT__entry(
847 __field( dev_t, dev )
848 __field(unsigned long, ino )
849 __field(unsigned long, state )
850 __field( __u16, mode )
851 __field(unsigned long, dirtied_when )
852 ),
853
854 TP_fast_assign(
855 __entry->dev = inode->i_sb->s_dev;
856 __entry->ino = inode->i_ino;
857 __entry->state = inode->i_state;
858 __entry->mode = inode->i_mode;
859 __entry->dirtied_when = inode->dirtied_when;
860 ),
861
862 TP_printk("dev %d,%d ino %lu dirtied %lu state %s mode 0%o",
863 MAJOR(__entry->dev), MINOR(__entry->dev),
864 __entry->ino, __entry->dirtied_when,
865 show_inode_state(__entry->state), __entry->mode)
866);
867
868DEFINE_EVENT(writeback_inode_template, writeback_lazytime,
869 TP_PROTO(struct inode *inode),
870
871 TP_ARGS(inode)
872);
873
874DEFINE_EVENT(writeback_inode_template, writeback_lazytime_iput,
875 TP_PROTO(struct inode *inode),
876
877 TP_ARGS(inode)
878);
879
880DEFINE_EVENT(writeback_inode_template, writeback_dirty_inode_enqueue,
881
882 TP_PROTO(struct inode *inode),
883
884 TP_ARGS(inode)
885);
886
887/*
888 * Inode writeback list tracking.
889 */
890
891DEFINE_EVENT(writeback_inode_template, sb_mark_inode_writeback,
892 TP_PROTO(struct inode *inode),
893 TP_ARGS(inode)
894);
895
896DEFINE_EVENT(writeback_inode_template, sb_clear_inode_writeback,
897 TP_PROTO(struct inode *inode),
898 TP_ARGS(inode)
899);
900
901#endif /* _TRACE_WRITEBACK_H */
902
903/* This part must be outside protection */
904#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 )
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) ? 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>