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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 EMe(WB_REASON_FORKER_THREAD, "forker_thread")
40
41WB_WORK_REASON
42
43/*
44 * Now redefine the EM() and EMe() macros to map the enums to the strings
45 * that will be printed in the output.
46 */
47#undef EM
48#undef EMe
49#define EM(a,b) { a, b },
50#define EMe(a,b) { a, b }
51
52struct wb_writeback_work;
53
54DECLARE_EVENT_CLASS(writeback_page_template,
55
56 TP_PROTO(struct page *page, struct address_space *mapping),
57
58 TP_ARGS(page, mapping),
59
60 TP_STRUCT__entry (
61 __array(char, name, 32)
62 __field(ino_t, ino)
63 __field(pgoff_t, index)
64 ),
65
66 TP_fast_assign(
67 strscpy_pad(__entry->name,
68 bdi_dev_name(mapping ? inode_to_bdi(mapping->host) :
69 NULL), 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 (unsigned long)__entry->ino,
77 __entry->index
78 )
79);
80
81DEFINE_EVENT(writeback_page_template, writeback_dirty_page,
82
83 TP_PROTO(struct page *page, struct address_space *mapping),
84
85 TP_ARGS(page, mapping)
86);
87
88DEFINE_EVENT(writeback_page_template, wait_on_page_writeback,
89
90 TP_PROTO(struct page *page, struct address_space *mapping),
91
92 TP_ARGS(page, mapping)
93);
94
95DECLARE_EVENT_CLASS(writeback_dirty_inode_template,
96
97 TP_PROTO(struct inode *inode, int flags),
98
99 TP_ARGS(inode, flags),
100
101 TP_STRUCT__entry (
102 __array(char, name, 32)
103 __field(ino_t, ino)
104 __field(unsigned long, state)
105 __field(unsigned long, flags)
106 ),
107
108 TP_fast_assign(
109 struct backing_dev_info *bdi = inode_to_bdi(inode);
110
111 /* may be called for files on pseudo FSes w/ unregistered bdi */
112 strscpy_pad(__entry->name, bdi_dev_name(bdi), 32);
113 __entry->ino = inode->i_ino;
114 __entry->state = inode->i_state;
115 __entry->flags = flags;
116 ),
117
118 TP_printk("bdi %s: ino=%lu state=%s flags=%s",
119 __entry->name,
120 (unsigned long)__entry->ino,
121 show_inode_state(__entry->state),
122 show_inode_state(__entry->flags)
123 )
124);
125
126DEFINE_EVENT(writeback_dirty_inode_template, writeback_mark_inode_dirty,
127
128 TP_PROTO(struct inode *inode, int flags),
129
130 TP_ARGS(inode, flags)
131);
132
133DEFINE_EVENT(writeback_dirty_inode_template, writeback_dirty_inode_start,
134
135 TP_PROTO(struct inode *inode, int flags),
136
137 TP_ARGS(inode, flags)
138);
139
140DEFINE_EVENT(writeback_dirty_inode_template, writeback_dirty_inode,
141
142 TP_PROTO(struct inode *inode, int flags),
143
144 TP_ARGS(inode, flags)
145);
146
147#ifdef CREATE_TRACE_POINTS
148#ifdef CONFIG_CGROUP_WRITEBACK
149
150static inline ino_t __trace_wb_assign_cgroup(struct bdi_writeback *wb)
151{
152 return cgroup_ino(wb->memcg_css->cgroup);
153}
154
155static inline ino_t __trace_wbc_assign_cgroup(struct writeback_control *wbc)
156{
157 if (wbc->wb)
158 return __trace_wb_assign_cgroup(wbc->wb);
159 else
160 return 1;
161}
162#else /* CONFIG_CGROUP_WRITEBACK */
163
164static inline ino_t __trace_wb_assign_cgroup(struct bdi_writeback *wb)
165{
166 return 1;
167}
168
169static inline ino_t __trace_wbc_assign_cgroup(struct writeback_control *wbc)
170{
171 return 1;
172}
173
174#endif /* CONFIG_CGROUP_WRITEBACK */
175#endif /* CREATE_TRACE_POINTS */
176
177#ifdef CONFIG_CGROUP_WRITEBACK
178TRACE_EVENT(inode_foreign_history,
179
180 TP_PROTO(struct inode *inode, struct writeback_control *wbc,
181 unsigned int history),
182
183 TP_ARGS(inode, wbc, history),
184
185 TP_STRUCT__entry(
186 __array(char, name, 32)
187 __field(ino_t, ino)
188 __field(ino_t, cgroup_ino)
189 __field(unsigned int, history)
190 ),
191
192 TP_fast_assign(
193 strncpy(__entry->name, bdi_dev_name(inode_to_bdi(inode)), 32);
194 __entry->ino = inode->i_ino;
195 __entry->cgroup_ino = __trace_wbc_assign_cgroup(wbc);
196 __entry->history = history;
197 ),
198
199 TP_printk("bdi %s: ino=%lu cgroup_ino=%lu history=0x%x",
200 __entry->name,
201 (unsigned long)__entry->ino,
202 (unsigned long)__entry->cgroup_ino,
203 __entry->history
204 )
205);
206
207TRACE_EVENT(inode_switch_wbs,
208
209 TP_PROTO(struct inode *inode, struct bdi_writeback *old_wb,
210 struct bdi_writeback *new_wb),
211
212 TP_ARGS(inode, old_wb, new_wb),
213
214 TP_STRUCT__entry(
215 __array(char, name, 32)
216 __field(ino_t, ino)
217 __field(ino_t, old_cgroup_ino)
218 __field(ino_t, new_cgroup_ino)
219 ),
220
221 TP_fast_assign(
222 strncpy(__entry->name, bdi_dev_name(old_wb->bdi), 32);
223 __entry->ino = inode->i_ino;
224 __entry->old_cgroup_ino = __trace_wb_assign_cgroup(old_wb);
225 __entry->new_cgroup_ino = __trace_wb_assign_cgroup(new_wb);
226 ),
227
228 TP_printk("bdi %s: ino=%lu old_cgroup_ino=%lu new_cgroup_ino=%lu",
229 __entry->name,
230 (unsigned long)__entry->ino,
231 (unsigned long)__entry->old_cgroup_ino,
232 (unsigned long)__entry->new_cgroup_ino
233 )
234);
235
236TRACE_EVENT(track_foreign_dirty,
237
238 TP_PROTO(struct page *page, struct bdi_writeback *wb),
239
240 TP_ARGS(page, wb),
241
242 TP_STRUCT__entry(
243 __array(char, name, 32)
244 __field(u64, bdi_id)
245 __field(ino_t, ino)
246 __field(unsigned int, memcg_id)
247 __field(ino_t, cgroup_ino)
248 __field(ino_t, page_cgroup_ino)
249 ),
250
251 TP_fast_assign(
252 struct address_space *mapping = page_mapping(page);
253 struct inode *inode = mapping ? mapping->host : NULL;
254
255 strncpy(__entry->name, bdi_dev_name(wb->bdi), 32);
256 __entry->bdi_id = wb->bdi->id;
257 __entry->ino = inode ? inode->i_ino : 0;
258 __entry->memcg_id = wb->memcg_css->id;
259 __entry->cgroup_ino = __trace_wb_assign_cgroup(wb);
260 __entry->page_cgroup_ino = cgroup_ino(page->mem_cgroup->css.cgroup);
261 ),
262
263 TP_printk("bdi %s[%llu]: ino=%lu memcg_id=%u cgroup_ino=%lu page_cgroup_ino=%lu",
264 __entry->name,
265 __entry->bdi_id,
266 (unsigned long)__entry->ino,
267 __entry->memcg_id,
268 (unsigned long)__entry->cgroup_ino,
269 (unsigned long)__entry->page_cgroup_ino
270 )
271);
272
273TRACE_EVENT(flush_foreign,
274
275 TP_PROTO(struct bdi_writeback *wb, unsigned int frn_bdi_id,
276 unsigned int frn_memcg_id),
277
278 TP_ARGS(wb, frn_bdi_id, frn_memcg_id),
279
280 TP_STRUCT__entry(
281 __array(char, name, 32)
282 __field(ino_t, cgroup_ino)
283 __field(unsigned int, frn_bdi_id)
284 __field(unsigned int, frn_memcg_id)
285 ),
286
287 TP_fast_assign(
288 strncpy(__entry->name, bdi_dev_name(wb->bdi), 32);
289 __entry->cgroup_ino = __trace_wb_assign_cgroup(wb);
290 __entry->frn_bdi_id = frn_bdi_id;
291 __entry->frn_memcg_id = frn_memcg_id;
292 ),
293
294 TP_printk("bdi %s: cgroup_ino=%lu frn_bdi_id=%u frn_memcg_id=%u",
295 __entry->name,
296 (unsigned long)__entry->cgroup_ino,
297 __entry->frn_bdi_id,
298 __entry->frn_memcg_id
299 )
300);
301#endif
302
303DECLARE_EVENT_CLASS(writeback_write_inode_template,
304
305 TP_PROTO(struct inode *inode, struct writeback_control *wbc),
306
307 TP_ARGS(inode, wbc),
308
309 TP_STRUCT__entry (
310 __array(char, name, 32)
311 __field(ino_t, ino)
312 __field(int, sync_mode)
313 __field(ino_t, cgroup_ino)
314 ),
315
316 TP_fast_assign(
317 strscpy_pad(__entry->name,
318 bdi_dev_name(inode_to_bdi(inode)), 32);
319 __entry->ino = inode->i_ino;
320 __entry->sync_mode = wbc->sync_mode;
321 __entry->cgroup_ino = __trace_wbc_assign_cgroup(wbc);
322 ),
323
324 TP_printk("bdi %s: ino=%lu sync_mode=%d cgroup_ino=%lu",
325 __entry->name,
326 (unsigned long)__entry->ino,
327 __entry->sync_mode,
328 (unsigned long)__entry->cgroup_ino
329 )
330);
331
332DEFINE_EVENT(writeback_write_inode_template, writeback_write_inode_start,
333
334 TP_PROTO(struct inode *inode, struct writeback_control *wbc),
335
336 TP_ARGS(inode, wbc)
337);
338
339DEFINE_EVENT(writeback_write_inode_template, writeback_write_inode,
340
341 TP_PROTO(struct inode *inode, struct writeback_control *wbc),
342
343 TP_ARGS(inode, wbc)
344);
345
346DECLARE_EVENT_CLASS(writeback_work_class,
347 TP_PROTO(struct bdi_writeback *wb, struct wb_writeback_work *work),
348 TP_ARGS(wb, work),
349 TP_STRUCT__entry(
350 __array(char, name, 32)
351 __field(long, nr_pages)
352 __field(dev_t, sb_dev)
353 __field(int, sync_mode)
354 __field(int, for_kupdate)
355 __field(int, range_cyclic)
356 __field(int, for_background)
357 __field(int, reason)
358 __field(ino_t, cgroup_ino)
359 ),
360 TP_fast_assign(
361 strscpy_pad(__entry->name, bdi_dev_name(wb->bdi), 32);
362 __entry->nr_pages = work->nr_pages;
363 __entry->sb_dev = work->sb ? work->sb->s_dev : 0;
364 __entry->sync_mode = work->sync_mode;
365 __entry->for_kupdate = work->for_kupdate;
366 __entry->range_cyclic = work->range_cyclic;
367 __entry->for_background = work->for_background;
368 __entry->reason = work->reason;
369 __entry->cgroup_ino = __trace_wb_assign_cgroup(wb);
370 ),
371 TP_printk("bdi %s: sb_dev %d:%d nr_pages=%ld sync_mode=%d "
372 "kupdate=%d range_cyclic=%d background=%d reason=%s cgroup_ino=%lu",
373 __entry->name,
374 MAJOR(__entry->sb_dev), MINOR(__entry->sb_dev),
375 __entry->nr_pages,
376 __entry->sync_mode,
377 __entry->for_kupdate,
378 __entry->range_cyclic,
379 __entry->for_background,
380 __print_symbolic(__entry->reason, WB_WORK_REASON),
381 (unsigned long)__entry->cgroup_ino
382 )
383);
384#define DEFINE_WRITEBACK_WORK_EVENT(name) \
385DEFINE_EVENT(writeback_work_class, name, \
386 TP_PROTO(struct bdi_writeback *wb, struct wb_writeback_work *work), \
387 TP_ARGS(wb, work))
388DEFINE_WRITEBACK_WORK_EVENT(writeback_queue);
389DEFINE_WRITEBACK_WORK_EVENT(writeback_exec);
390DEFINE_WRITEBACK_WORK_EVENT(writeback_start);
391DEFINE_WRITEBACK_WORK_EVENT(writeback_written);
392DEFINE_WRITEBACK_WORK_EVENT(writeback_wait);
393
394TRACE_EVENT(writeback_pages_written,
395 TP_PROTO(long pages_written),
396 TP_ARGS(pages_written),
397 TP_STRUCT__entry(
398 __field(long, pages)
399 ),
400 TP_fast_assign(
401 __entry->pages = pages_written;
402 ),
403 TP_printk("%ld", __entry->pages)
404);
405
406DECLARE_EVENT_CLASS(writeback_class,
407 TP_PROTO(struct bdi_writeback *wb),
408 TP_ARGS(wb),
409 TP_STRUCT__entry(
410 __array(char, name, 32)
411 __field(ino_t, cgroup_ino)
412 ),
413 TP_fast_assign(
414 strscpy_pad(__entry->name, bdi_dev_name(wb->bdi), 32);
415 __entry->cgroup_ino = __trace_wb_assign_cgroup(wb);
416 ),
417 TP_printk("bdi %s: cgroup_ino=%lu",
418 __entry->name,
419 (unsigned long)__entry->cgroup_ino
420 )
421);
422#define DEFINE_WRITEBACK_EVENT(name) \
423DEFINE_EVENT(writeback_class, name, \
424 TP_PROTO(struct bdi_writeback *wb), \
425 TP_ARGS(wb))
426
427DEFINE_WRITEBACK_EVENT(writeback_wake_background);
428
429TRACE_EVENT(writeback_bdi_register,
430 TP_PROTO(struct backing_dev_info *bdi),
431 TP_ARGS(bdi),
432 TP_STRUCT__entry(
433 __array(char, name, 32)
434 ),
435 TP_fast_assign(
436 strscpy_pad(__entry->name, bdi_dev_name(bdi), 32);
437 ),
438 TP_printk("bdi %s",
439 __entry->name
440 )
441);
442
443DECLARE_EVENT_CLASS(wbc_class,
444 TP_PROTO(struct writeback_control *wbc, struct backing_dev_info *bdi),
445 TP_ARGS(wbc, bdi),
446 TP_STRUCT__entry(
447 __array(char, name, 32)
448 __field(long, nr_to_write)
449 __field(long, pages_skipped)
450 __field(int, sync_mode)
451 __field(int, for_kupdate)
452 __field(int, for_background)
453 __field(int, for_reclaim)
454 __field(int, range_cyclic)
455 __field(long, range_start)
456 __field(long, range_end)
457 __field(ino_t, cgroup_ino)
458 ),
459
460 TP_fast_assign(
461 strscpy_pad(__entry->name, bdi_dev_name(bdi), 32);
462 __entry->nr_to_write = wbc->nr_to_write;
463 __entry->pages_skipped = wbc->pages_skipped;
464 __entry->sync_mode = wbc->sync_mode;
465 __entry->for_kupdate = wbc->for_kupdate;
466 __entry->for_background = wbc->for_background;
467 __entry->for_reclaim = wbc->for_reclaim;
468 __entry->range_cyclic = wbc->range_cyclic;
469 __entry->range_start = (long)wbc->range_start;
470 __entry->range_end = (long)wbc->range_end;
471 __entry->cgroup_ino = __trace_wbc_assign_cgroup(wbc);
472 ),
473
474 TP_printk("bdi %s: towrt=%ld skip=%ld mode=%d kupd=%d "
475 "bgrd=%d reclm=%d cyclic=%d "
476 "start=0x%lx end=0x%lx cgroup_ino=%lu",
477 __entry->name,
478 __entry->nr_to_write,
479 __entry->pages_skipped,
480 __entry->sync_mode,
481 __entry->for_kupdate,
482 __entry->for_background,
483 __entry->for_reclaim,
484 __entry->range_cyclic,
485 __entry->range_start,
486 __entry->range_end,
487 (unsigned long)__entry->cgroup_ino
488 )
489)
490
491#define DEFINE_WBC_EVENT(name) \
492DEFINE_EVENT(wbc_class, name, \
493 TP_PROTO(struct writeback_control *wbc, struct backing_dev_info *bdi), \
494 TP_ARGS(wbc, bdi))
495DEFINE_WBC_EVENT(wbc_writepage);
496
497TRACE_EVENT(writeback_queue_io,
498 TP_PROTO(struct bdi_writeback *wb,
499 struct wb_writeback_work *work,
500 unsigned long dirtied_before,
501 int moved),
502 TP_ARGS(wb, work, dirtied_before, moved),
503 TP_STRUCT__entry(
504 __array(char, name, 32)
505 __field(unsigned long, older)
506 __field(long, age)
507 __field(int, moved)
508 __field(int, reason)
509 __field(ino_t, cgroup_ino)
510 ),
511 TP_fast_assign(
512 strscpy_pad(__entry->name, bdi_dev_name(wb->bdi), 32);
513 __entry->older = dirtied_before;
514 __entry->age = (jiffies - dirtied_before) * 1000 / HZ;
515 __entry->moved = moved;
516 __entry->reason = work->reason;
517 __entry->cgroup_ino = __trace_wb_assign_cgroup(wb);
518 ),
519 TP_printk("bdi %s: older=%lu age=%ld enqueue=%d reason=%s cgroup_ino=%lu",
520 __entry->name,
521 __entry->older, /* dirtied_before in jiffies */
522 __entry->age, /* dirtied_before in relative milliseconds */
523 __entry->moved,
524 __print_symbolic(__entry->reason, WB_WORK_REASON),
525 (unsigned long)__entry->cgroup_ino
526 )
527);
528
529TRACE_EVENT(global_dirty_state,
530
531 TP_PROTO(unsigned long background_thresh,
532 unsigned long dirty_thresh
533 ),
534
535 TP_ARGS(background_thresh,
536 dirty_thresh
537 ),
538
539 TP_STRUCT__entry(
540 __field(unsigned long, nr_dirty)
541 __field(unsigned long, nr_writeback)
542 __field(unsigned long, background_thresh)
543 __field(unsigned long, dirty_thresh)
544 __field(unsigned long, dirty_limit)
545 __field(unsigned long, nr_dirtied)
546 __field(unsigned long, nr_written)
547 ),
548
549 TP_fast_assign(
550 __entry->nr_dirty = global_node_page_state(NR_FILE_DIRTY);
551 __entry->nr_writeback = global_node_page_state(NR_WRITEBACK);
552 __entry->nr_dirtied = global_node_page_state(NR_DIRTIED);
553 __entry->nr_written = global_node_page_state(NR_WRITTEN);
554 __entry->background_thresh = background_thresh;
555 __entry->dirty_thresh = dirty_thresh;
556 __entry->dirty_limit = global_wb_domain.dirty_limit;
557 ),
558
559 TP_printk("dirty=%lu writeback=%lu "
560 "bg_thresh=%lu thresh=%lu limit=%lu "
561 "dirtied=%lu written=%lu",
562 __entry->nr_dirty,
563 __entry->nr_writeback,
564 __entry->background_thresh,
565 __entry->dirty_thresh,
566 __entry->dirty_limit,
567 __entry->nr_dirtied,
568 __entry->nr_written
569 )
570);
571
572#define KBps(x) ((x) << (PAGE_SHIFT - 10))
573
574TRACE_EVENT(bdi_dirty_ratelimit,
575
576 TP_PROTO(struct bdi_writeback *wb,
577 unsigned long dirty_rate,
578 unsigned long task_ratelimit),
579
580 TP_ARGS(wb, dirty_rate, task_ratelimit),
581
582 TP_STRUCT__entry(
583 __array(char, bdi, 32)
584 __field(unsigned long, write_bw)
585 __field(unsigned long, avg_write_bw)
586 __field(unsigned long, dirty_rate)
587 __field(unsigned long, dirty_ratelimit)
588 __field(unsigned long, task_ratelimit)
589 __field(unsigned long, balanced_dirty_ratelimit)
590 __field(ino_t, cgroup_ino)
591 ),
592
593 TP_fast_assign(
594 strscpy_pad(__entry->bdi, bdi_dev_name(wb->bdi), 32);
595 __entry->write_bw = KBps(wb->write_bandwidth);
596 __entry->avg_write_bw = KBps(wb->avg_write_bandwidth);
597 __entry->dirty_rate = KBps(dirty_rate);
598 __entry->dirty_ratelimit = KBps(wb->dirty_ratelimit);
599 __entry->task_ratelimit = KBps(task_ratelimit);
600 __entry->balanced_dirty_ratelimit =
601 KBps(wb->balanced_dirty_ratelimit);
602 __entry->cgroup_ino = __trace_wb_assign_cgroup(wb);
603 ),
604
605 TP_printk("bdi %s: "
606 "write_bw=%lu awrite_bw=%lu dirty_rate=%lu "
607 "dirty_ratelimit=%lu task_ratelimit=%lu "
608 "balanced_dirty_ratelimit=%lu cgroup_ino=%lu",
609 __entry->bdi,
610 __entry->write_bw, /* write bandwidth */
611 __entry->avg_write_bw, /* avg write bandwidth */
612 __entry->dirty_rate, /* bdi dirty rate */
613 __entry->dirty_ratelimit, /* base ratelimit */
614 __entry->task_ratelimit, /* ratelimit with position control */
615 __entry->balanced_dirty_ratelimit, /* the balanced ratelimit */
616 (unsigned long)__entry->cgroup_ino
617 )
618);
619
620TRACE_EVENT(balance_dirty_pages,
621
622 TP_PROTO(struct bdi_writeback *wb,
623 unsigned long thresh,
624 unsigned long bg_thresh,
625 unsigned long dirty,
626 unsigned long bdi_thresh,
627 unsigned long bdi_dirty,
628 unsigned long dirty_ratelimit,
629 unsigned long task_ratelimit,
630 unsigned long dirtied,
631 unsigned long period,
632 long pause,
633 unsigned long start_time),
634
635 TP_ARGS(wb, thresh, bg_thresh, dirty, bdi_thresh, bdi_dirty,
636 dirty_ratelimit, task_ratelimit,
637 dirtied, period, pause, start_time),
638
639 TP_STRUCT__entry(
640 __array( char, bdi, 32)
641 __field(unsigned long, limit)
642 __field(unsigned long, setpoint)
643 __field(unsigned long, dirty)
644 __field(unsigned long, bdi_setpoint)
645 __field(unsigned long, bdi_dirty)
646 __field(unsigned long, dirty_ratelimit)
647 __field(unsigned long, task_ratelimit)
648 __field(unsigned int, dirtied)
649 __field(unsigned int, dirtied_pause)
650 __field(unsigned long, paused)
651 __field( long, pause)
652 __field(unsigned long, period)
653 __field( long, think)
654 __field(ino_t, cgroup_ino)
655 ),
656
657 TP_fast_assign(
658 unsigned long freerun = (thresh + bg_thresh) / 2;
659 strscpy_pad(__entry->bdi, bdi_dev_name(wb->bdi), 32);
660
661 __entry->limit = global_wb_domain.dirty_limit;
662 __entry->setpoint = (global_wb_domain.dirty_limit +
663 freerun) / 2;
664 __entry->dirty = dirty;
665 __entry->bdi_setpoint = __entry->setpoint *
666 bdi_thresh / (thresh + 1);
667 __entry->bdi_dirty = bdi_dirty;
668 __entry->dirty_ratelimit = KBps(dirty_ratelimit);
669 __entry->task_ratelimit = KBps(task_ratelimit);
670 __entry->dirtied = dirtied;
671 __entry->dirtied_pause = current->nr_dirtied_pause;
672 __entry->think = current->dirty_paused_when == 0 ? 0 :
673 (long)(jiffies - current->dirty_paused_when) * 1000/HZ;
674 __entry->period = period * 1000 / HZ;
675 __entry->pause = pause * 1000 / HZ;
676 __entry->paused = (jiffies - start_time) * 1000 / HZ;
677 __entry->cgroup_ino = __trace_wb_assign_cgroup(wb);
678 ),
679
680
681 TP_printk("bdi %s: "
682 "limit=%lu setpoint=%lu dirty=%lu "
683 "bdi_setpoint=%lu bdi_dirty=%lu "
684 "dirty_ratelimit=%lu task_ratelimit=%lu "
685 "dirtied=%u dirtied_pause=%u "
686 "paused=%lu pause=%ld period=%lu think=%ld cgroup_ino=%lu",
687 __entry->bdi,
688 __entry->limit,
689 __entry->setpoint,
690 __entry->dirty,
691 __entry->bdi_setpoint,
692 __entry->bdi_dirty,
693 __entry->dirty_ratelimit,
694 __entry->task_ratelimit,
695 __entry->dirtied,
696 __entry->dirtied_pause,
697 __entry->paused, /* ms */
698 __entry->pause, /* ms */
699 __entry->period, /* ms */
700 __entry->think, /* ms */
701 (unsigned long)__entry->cgroup_ino
702 )
703);
704
705TRACE_EVENT(writeback_sb_inodes_requeue,
706
707 TP_PROTO(struct inode *inode),
708 TP_ARGS(inode),
709
710 TP_STRUCT__entry(
711 __array(char, name, 32)
712 __field(ino_t, ino)
713 __field(unsigned long, state)
714 __field(unsigned long, dirtied_when)
715 __field(ino_t, cgroup_ino)
716 ),
717
718 TP_fast_assign(
719 strscpy_pad(__entry->name,
720 bdi_dev_name(inode_to_bdi(inode)), 32);
721 __entry->ino = inode->i_ino;
722 __entry->state = inode->i_state;
723 __entry->dirtied_when = inode->dirtied_when;
724 __entry->cgroup_ino = __trace_wb_assign_cgroup(inode_to_wb(inode));
725 ),
726
727 TP_printk("bdi %s: ino=%lu state=%s dirtied_when=%lu age=%lu cgroup_ino=%lu",
728 __entry->name,
729 (unsigned long)__entry->ino,
730 show_inode_state(__entry->state),
731 __entry->dirtied_when,
732 (jiffies - __entry->dirtied_when) / HZ,
733 (unsigned long)__entry->cgroup_ino
734 )
735);
736
737DECLARE_EVENT_CLASS(writeback_congest_waited_template,
738
739 TP_PROTO(unsigned int usec_timeout, unsigned int usec_delayed),
740
741 TP_ARGS(usec_timeout, usec_delayed),
742
743 TP_STRUCT__entry(
744 __field( unsigned int, usec_timeout )
745 __field( unsigned int, usec_delayed )
746 ),
747
748 TP_fast_assign(
749 __entry->usec_timeout = usec_timeout;
750 __entry->usec_delayed = usec_delayed;
751 ),
752
753 TP_printk("usec_timeout=%u usec_delayed=%u",
754 __entry->usec_timeout,
755 __entry->usec_delayed)
756);
757
758DEFINE_EVENT(writeback_congest_waited_template, writeback_congestion_wait,
759
760 TP_PROTO(unsigned int usec_timeout, unsigned int usec_delayed),
761
762 TP_ARGS(usec_timeout, usec_delayed)
763);
764
765DEFINE_EVENT(writeback_congest_waited_template, writeback_wait_iff_congested,
766
767 TP_PROTO(unsigned int usec_timeout, unsigned int usec_delayed),
768
769 TP_ARGS(usec_timeout, usec_delayed)
770);
771
772DECLARE_EVENT_CLASS(writeback_single_inode_template,
773
774 TP_PROTO(struct inode *inode,
775 struct writeback_control *wbc,
776 unsigned long nr_to_write
777 ),
778
779 TP_ARGS(inode, wbc, nr_to_write),
780
781 TP_STRUCT__entry(
782 __array(char, name, 32)
783 __field(ino_t, ino)
784 __field(unsigned long, state)
785 __field(unsigned long, dirtied_when)
786 __field(unsigned long, writeback_index)
787 __field(long, nr_to_write)
788 __field(unsigned long, wrote)
789 __field(ino_t, cgroup_ino)
790 ),
791
792 TP_fast_assign(
793 strscpy_pad(__entry->name,
794 bdi_dev_name(inode_to_bdi(inode)), 32);
795 __entry->ino = inode->i_ino;
796 __entry->state = inode->i_state;
797 __entry->dirtied_when = inode->dirtied_when;
798 __entry->writeback_index = inode->i_mapping->writeback_index;
799 __entry->nr_to_write = nr_to_write;
800 __entry->wrote = nr_to_write - wbc->nr_to_write;
801 __entry->cgroup_ino = __trace_wbc_assign_cgroup(wbc);
802 ),
803
804 TP_printk("bdi %s: ino=%lu state=%s dirtied_when=%lu age=%lu "
805 "index=%lu to_write=%ld wrote=%lu cgroup_ino=%lu",
806 __entry->name,
807 (unsigned long)__entry->ino,
808 show_inode_state(__entry->state),
809 __entry->dirtied_when,
810 (jiffies - __entry->dirtied_when) / HZ,
811 __entry->writeback_index,
812 __entry->nr_to_write,
813 __entry->wrote,
814 (unsigned long)__entry->cgroup_ino
815 )
816);
817
818DEFINE_EVENT(writeback_single_inode_template, writeback_single_inode_start,
819 TP_PROTO(struct inode *inode,
820 struct writeback_control *wbc,
821 unsigned long nr_to_write),
822 TP_ARGS(inode, wbc, nr_to_write)
823);
824
825DEFINE_EVENT(writeback_single_inode_template, writeback_single_inode,
826 TP_PROTO(struct inode *inode,
827 struct writeback_control *wbc,
828 unsigned long nr_to_write),
829 TP_ARGS(inode, wbc, nr_to_write)
830);
831
832DECLARE_EVENT_CLASS(writeback_inode_template,
833 TP_PROTO(struct inode *inode),
834
835 TP_ARGS(inode),
836
837 TP_STRUCT__entry(
838 __field( dev_t, dev )
839 __field( ino_t, ino )
840 __field(unsigned long, state )
841 __field( __u16, mode )
842 __field(unsigned long, dirtied_when )
843 ),
844
845 TP_fast_assign(
846 __entry->dev = inode->i_sb->s_dev;
847 __entry->ino = inode->i_ino;
848 __entry->state = inode->i_state;
849 __entry->mode = inode->i_mode;
850 __entry->dirtied_when = inode->dirtied_when;
851 ),
852
853 TP_printk("dev %d,%d ino %lu dirtied %lu state %s mode 0%o",
854 MAJOR(__entry->dev), MINOR(__entry->dev),
855 (unsigned long)__entry->ino, __entry->dirtied_when,
856 show_inode_state(__entry->state), __entry->mode)
857);
858
859DEFINE_EVENT(writeback_inode_template, writeback_lazytime,
860 TP_PROTO(struct inode *inode),
861
862 TP_ARGS(inode)
863);
864
865DEFINE_EVENT(writeback_inode_template, writeback_lazytime_iput,
866 TP_PROTO(struct inode *inode),
867
868 TP_ARGS(inode)
869);
870
871DEFINE_EVENT(writeback_inode_template, writeback_dirty_inode_enqueue,
872
873 TP_PROTO(struct inode *inode),
874
875 TP_ARGS(inode)
876);
877
878/*
879 * Inode writeback list tracking.
880 */
881
882DEFINE_EVENT(writeback_inode_template, sb_mark_inode_writeback,
883 TP_PROTO(struct inode *inode),
884 TP_ARGS(inode)
885);
886
887DEFINE_EVENT(writeback_inode_template, sb_clear_inode_writeback,
888 TP_PROTO(struct inode *inode),
889 TP_ARGS(inode)
890);
891
892#endif /* _TRACE_WRITEBACK_H */
893
894/* This part must be outside protection */
895#include <trace/define_trace.h>