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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_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
56TRACE_EVENT(writeback_dirty_page,
57
58 TP_PROTO(struct page *page, struct address_space *mapping),
59
60 TP_ARGS(page, mapping),
61
62 TP_STRUCT__entry (
63 __array(char, name, 32)
64 __field(unsigned long, ino)
65 __field(pgoff_t, index)
66 ),
67
68 TP_fast_assign(
69 strncpy(__entry->name,
70 mapping ? dev_name(inode_to_bdi(mapping->host)->dev) : "(unknown)", 32);
71 __entry->ino = mapping ? mapping->host->i_ino : 0;
72 __entry->index = page->index;
73 ),
74
75 TP_printk("bdi %s: ino=%lu index=%lu",
76 __entry->name,
77 __entry->ino,
78 __entry->index
79 )
80);
81
82DECLARE_EVENT_CLASS(writeback_dirty_inode_template,
83
84 TP_PROTO(struct inode *inode, int flags),
85
86 TP_ARGS(inode, flags),
87
88 TP_STRUCT__entry (
89 __array(char, name, 32)
90 __field(unsigned long, ino)
91 __field(unsigned long, state)
92 __field(unsigned long, flags)
93 ),
94
95 TP_fast_assign(
96 struct backing_dev_info *bdi = inode_to_bdi(inode);
97
98 /* may be called for files on pseudo FSes w/ unregistered bdi */
99 strncpy(__entry->name,
100 bdi->dev ? dev_name(bdi->dev) : "(unknown)", 32);
101 __entry->ino = inode->i_ino;
102 __entry->state = inode->i_state;
103 __entry->flags = flags;
104 ),
105
106 TP_printk("bdi %s: ino=%lu state=%s flags=%s",
107 __entry->name,
108 __entry->ino,
109 show_inode_state(__entry->state),
110 show_inode_state(__entry->flags)
111 )
112);
113
114DEFINE_EVENT(writeback_dirty_inode_template, writeback_mark_inode_dirty,
115
116 TP_PROTO(struct inode *inode, int flags),
117
118 TP_ARGS(inode, flags)
119);
120
121DEFINE_EVENT(writeback_dirty_inode_template, writeback_dirty_inode_start,
122
123 TP_PROTO(struct inode *inode, int flags),
124
125 TP_ARGS(inode, flags)
126);
127
128DEFINE_EVENT(writeback_dirty_inode_template, writeback_dirty_inode,
129
130 TP_PROTO(struct inode *inode, int flags),
131
132 TP_ARGS(inode, flags)
133);
134
135#ifdef CREATE_TRACE_POINTS
136#ifdef CONFIG_CGROUP_WRITEBACK
137
138static inline unsigned int __trace_wb_assign_cgroup(struct bdi_writeback *wb)
139{
140 return wb->memcg_css->cgroup->kn->id.ino;
141}
142
143static inline unsigned int __trace_wbc_assign_cgroup(struct writeback_control *wbc)
144{
145 if (wbc->wb)
146 return __trace_wb_assign_cgroup(wbc->wb);
147 else
148 return -1U;
149}
150#else /* CONFIG_CGROUP_WRITEBACK */
151
152static inline unsigned int __trace_wb_assign_cgroup(struct bdi_writeback *wb)
153{
154 return -1U;
155}
156
157static inline unsigned int __trace_wbc_assign_cgroup(struct writeback_control *wbc)
158{
159 return -1U;
160}
161
162#endif /* CONFIG_CGROUP_WRITEBACK */
163#endif /* CREATE_TRACE_POINTS */
164
165DECLARE_EVENT_CLASS(writeback_write_inode_template,
166
167 TP_PROTO(struct inode *inode, struct writeback_control *wbc),
168
169 TP_ARGS(inode, wbc),
170
171 TP_STRUCT__entry (
172 __array(char, name, 32)
173 __field(unsigned long, ino)
174 __field(int, sync_mode)
175 __field(unsigned int, cgroup_ino)
176 ),
177
178 TP_fast_assign(
179 strncpy(__entry->name,
180 dev_name(inode_to_bdi(inode)->dev), 32);
181 __entry->ino = inode->i_ino;
182 __entry->sync_mode = wbc->sync_mode;
183 __entry->cgroup_ino = __trace_wbc_assign_cgroup(wbc);
184 ),
185
186 TP_printk("bdi %s: ino=%lu sync_mode=%d cgroup_ino=%u",
187 __entry->name,
188 __entry->ino,
189 __entry->sync_mode,
190 __entry->cgroup_ino
191 )
192);
193
194DEFINE_EVENT(writeback_write_inode_template, writeback_write_inode_start,
195
196 TP_PROTO(struct inode *inode, struct writeback_control *wbc),
197
198 TP_ARGS(inode, wbc)
199);
200
201DEFINE_EVENT(writeback_write_inode_template, writeback_write_inode,
202
203 TP_PROTO(struct inode *inode, struct writeback_control *wbc),
204
205 TP_ARGS(inode, wbc)
206);
207
208DECLARE_EVENT_CLASS(writeback_work_class,
209 TP_PROTO(struct bdi_writeback *wb, struct wb_writeback_work *work),
210 TP_ARGS(wb, work),
211 TP_STRUCT__entry(
212 __array(char, name, 32)
213 __field(long, nr_pages)
214 __field(dev_t, sb_dev)
215 __field(int, sync_mode)
216 __field(int, for_kupdate)
217 __field(int, range_cyclic)
218 __field(int, for_background)
219 __field(int, reason)
220 __field(unsigned int, cgroup_ino)
221 ),
222 TP_fast_assign(
223 strncpy(__entry->name,
224 wb->bdi->dev ? dev_name(wb->bdi->dev) : "(unknown)", 32);
225 __entry->nr_pages = work->nr_pages;
226 __entry->sb_dev = work->sb ? work->sb->s_dev : 0;
227 __entry->sync_mode = work->sync_mode;
228 __entry->for_kupdate = work->for_kupdate;
229 __entry->range_cyclic = work->range_cyclic;
230 __entry->for_background = work->for_background;
231 __entry->reason = work->reason;
232 __entry->cgroup_ino = __trace_wb_assign_cgroup(wb);
233 ),
234 TP_printk("bdi %s: sb_dev %d:%d nr_pages=%ld sync_mode=%d "
235 "kupdate=%d range_cyclic=%d background=%d reason=%s cgroup_ino=%u",
236 __entry->name,
237 MAJOR(__entry->sb_dev), MINOR(__entry->sb_dev),
238 __entry->nr_pages,
239 __entry->sync_mode,
240 __entry->for_kupdate,
241 __entry->range_cyclic,
242 __entry->for_background,
243 __print_symbolic(__entry->reason, WB_WORK_REASON),
244 __entry->cgroup_ino
245 )
246);
247#define DEFINE_WRITEBACK_WORK_EVENT(name) \
248DEFINE_EVENT(writeback_work_class, name, \
249 TP_PROTO(struct bdi_writeback *wb, struct wb_writeback_work *work), \
250 TP_ARGS(wb, work))
251DEFINE_WRITEBACK_WORK_EVENT(writeback_queue);
252DEFINE_WRITEBACK_WORK_EVENT(writeback_exec);
253DEFINE_WRITEBACK_WORK_EVENT(writeback_start);
254DEFINE_WRITEBACK_WORK_EVENT(writeback_written);
255DEFINE_WRITEBACK_WORK_EVENT(writeback_wait);
256
257TRACE_EVENT(writeback_pages_written,
258 TP_PROTO(long pages_written),
259 TP_ARGS(pages_written),
260 TP_STRUCT__entry(
261 __field(long, pages)
262 ),
263 TP_fast_assign(
264 __entry->pages = pages_written;
265 ),
266 TP_printk("%ld", __entry->pages)
267);
268
269DECLARE_EVENT_CLASS(writeback_class,
270 TP_PROTO(struct bdi_writeback *wb),
271 TP_ARGS(wb),
272 TP_STRUCT__entry(
273 __array(char, name, 32)
274 __field(unsigned int, cgroup_ino)
275 ),
276 TP_fast_assign(
277 strncpy(__entry->name, dev_name(wb->bdi->dev), 32);
278 __entry->cgroup_ino = __trace_wb_assign_cgroup(wb);
279 ),
280 TP_printk("bdi %s: cgroup_ino=%u",
281 __entry->name,
282 __entry->cgroup_ino
283 )
284);
285#define DEFINE_WRITEBACK_EVENT(name) \
286DEFINE_EVENT(writeback_class, name, \
287 TP_PROTO(struct bdi_writeback *wb), \
288 TP_ARGS(wb))
289
290DEFINE_WRITEBACK_EVENT(writeback_wake_background);
291
292TRACE_EVENT(writeback_bdi_register,
293 TP_PROTO(struct backing_dev_info *bdi),
294 TP_ARGS(bdi),
295 TP_STRUCT__entry(
296 __array(char, name, 32)
297 ),
298 TP_fast_assign(
299 strncpy(__entry->name, dev_name(bdi->dev), 32);
300 ),
301 TP_printk("bdi %s",
302 __entry->name
303 )
304);
305
306DECLARE_EVENT_CLASS(wbc_class,
307 TP_PROTO(struct writeback_control *wbc, struct backing_dev_info *bdi),
308 TP_ARGS(wbc, bdi),
309 TP_STRUCT__entry(
310 __array(char, name, 32)
311 __field(long, nr_to_write)
312 __field(long, pages_skipped)
313 __field(int, sync_mode)
314 __field(int, for_kupdate)
315 __field(int, for_background)
316 __field(int, for_reclaim)
317 __field(int, range_cyclic)
318 __field(long, range_start)
319 __field(long, range_end)
320 __field(unsigned int, cgroup_ino)
321 ),
322
323 TP_fast_assign(
324 strncpy(__entry->name, dev_name(bdi->dev), 32);
325 __entry->nr_to_write = wbc->nr_to_write;
326 __entry->pages_skipped = wbc->pages_skipped;
327 __entry->sync_mode = wbc->sync_mode;
328 __entry->for_kupdate = wbc->for_kupdate;
329 __entry->for_background = wbc->for_background;
330 __entry->for_reclaim = wbc->for_reclaim;
331 __entry->range_cyclic = wbc->range_cyclic;
332 __entry->range_start = (long)wbc->range_start;
333 __entry->range_end = (long)wbc->range_end;
334 __entry->cgroup_ino = __trace_wbc_assign_cgroup(wbc);
335 ),
336
337 TP_printk("bdi %s: towrt=%ld skip=%ld mode=%d kupd=%d "
338 "bgrd=%d reclm=%d cyclic=%d "
339 "start=0x%lx end=0x%lx cgroup_ino=%u",
340 __entry->name,
341 __entry->nr_to_write,
342 __entry->pages_skipped,
343 __entry->sync_mode,
344 __entry->for_kupdate,
345 __entry->for_background,
346 __entry->for_reclaim,
347 __entry->range_cyclic,
348 __entry->range_start,
349 __entry->range_end,
350 __entry->cgroup_ino
351 )
352)
353
354#define DEFINE_WBC_EVENT(name) \
355DEFINE_EVENT(wbc_class, name, \
356 TP_PROTO(struct writeback_control *wbc, struct backing_dev_info *bdi), \
357 TP_ARGS(wbc, bdi))
358DEFINE_WBC_EVENT(wbc_writepage);
359
360TRACE_EVENT(writeback_queue_io,
361 TP_PROTO(struct bdi_writeback *wb,
362 struct wb_writeback_work *work,
363 int moved),
364 TP_ARGS(wb, work, moved),
365 TP_STRUCT__entry(
366 __array(char, name, 32)
367 __field(unsigned long, older)
368 __field(long, age)
369 __field(int, moved)
370 __field(int, reason)
371 __field(unsigned int, cgroup_ino)
372 ),
373 TP_fast_assign(
374 unsigned long *older_than_this = work->older_than_this;
375 strncpy(__entry->name, dev_name(wb->bdi->dev), 32);
376 __entry->older = older_than_this ? *older_than_this : 0;
377 __entry->age = older_than_this ?
378 (jiffies - *older_than_this) * 1000 / HZ : -1;
379 __entry->moved = moved;
380 __entry->reason = work->reason;
381 __entry->cgroup_ino = __trace_wb_assign_cgroup(wb);
382 ),
383 TP_printk("bdi %s: older=%lu age=%ld enqueue=%d reason=%s cgroup_ino=%u",
384 __entry->name,
385 __entry->older, /* older_than_this in jiffies */
386 __entry->age, /* older_than_this in relative milliseconds */
387 __entry->moved,
388 __print_symbolic(__entry->reason, WB_WORK_REASON),
389 __entry->cgroup_ino
390 )
391);
392
393TRACE_EVENT(global_dirty_state,
394
395 TP_PROTO(unsigned long background_thresh,
396 unsigned long dirty_thresh
397 ),
398
399 TP_ARGS(background_thresh,
400 dirty_thresh
401 ),
402
403 TP_STRUCT__entry(
404 __field(unsigned long, nr_dirty)
405 __field(unsigned long, nr_writeback)
406 __field(unsigned long, nr_unstable)
407 __field(unsigned long, background_thresh)
408 __field(unsigned long, dirty_thresh)
409 __field(unsigned long, dirty_limit)
410 __field(unsigned long, nr_dirtied)
411 __field(unsigned long, nr_written)
412 ),
413
414 TP_fast_assign(
415 __entry->nr_dirty = global_node_page_state(NR_FILE_DIRTY);
416 __entry->nr_writeback = global_node_page_state(NR_WRITEBACK);
417 __entry->nr_unstable = global_node_page_state(NR_UNSTABLE_NFS);
418 __entry->nr_dirtied = global_node_page_state(NR_DIRTIED);
419 __entry->nr_written = global_node_page_state(NR_WRITTEN);
420 __entry->background_thresh = background_thresh;
421 __entry->dirty_thresh = dirty_thresh;
422 __entry->dirty_limit = global_wb_domain.dirty_limit;
423 ),
424
425 TP_printk("dirty=%lu writeback=%lu unstable=%lu "
426 "bg_thresh=%lu thresh=%lu limit=%lu "
427 "dirtied=%lu written=%lu",
428 __entry->nr_dirty,
429 __entry->nr_writeback,
430 __entry->nr_unstable,
431 __entry->background_thresh,
432 __entry->dirty_thresh,
433 __entry->dirty_limit,
434 __entry->nr_dirtied,
435 __entry->nr_written
436 )
437);
438
439#define KBps(x) ((x) << (PAGE_SHIFT - 10))
440
441TRACE_EVENT(bdi_dirty_ratelimit,
442
443 TP_PROTO(struct bdi_writeback *wb,
444 unsigned long dirty_rate,
445 unsigned long task_ratelimit),
446
447 TP_ARGS(wb, dirty_rate, task_ratelimit),
448
449 TP_STRUCT__entry(
450 __array(char, bdi, 32)
451 __field(unsigned long, write_bw)
452 __field(unsigned long, avg_write_bw)
453 __field(unsigned long, dirty_rate)
454 __field(unsigned long, dirty_ratelimit)
455 __field(unsigned long, task_ratelimit)
456 __field(unsigned long, balanced_dirty_ratelimit)
457 __field(unsigned int, cgroup_ino)
458 ),
459
460 TP_fast_assign(
461 strlcpy(__entry->bdi, dev_name(wb->bdi->dev), 32);
462 __entry->write_bw = KBps(wb->write_bandwidth);
463 __entry->avg_write_bw = KBps(wb->avg_write_bandwidth);
464 __entry->dirty_rate = KBps(dirty_rate);
465 __entry->dirty_ratelimit = KBps(wb->dirty_ratelimit);
466 __entry->task_ratelimit = KBps(task_ratelimit);
467 __entry->balanced_dirty_ratelimit =
468 KBps(wb->balanced_dirty_ratelimit);
469 __entry->cgroup_ino = __trace_wb_assign_cgroup(wb);
470 ),
471
472 TP_printk("bdi %s: "
473 "write_bw=%lu awrite_bw=%lu dirty_rate=%lu "
474 "dirty_ratelimit=%lu task_ratelimit=%lu "
475 "balanced_dirty_ratelimit=%lu cgroup_ino=%u",
476 __entry->bdi,
477 __entry->write_bw, /* write bandwidth */
478 __entry->avg_write_bw, /* avg write bandwidth */
479 __entry->dirty_rate, /* bdi dirty rate */
480 __entry->dirty_ratelimit, /* base ratelimit */
481 __entry->task_ratelimit, /* ratelimit with position control */
482 __entry->balanced_dirty_ratelimit, /* the balanced ratelimit */
483 __entry->cgroup_ino
484 )
485);
486
487TRACE_EVENT(balance_dirty_pages,
488
489 TP_PROTO(struct bdi_writeback *wb,
490 unsigned long thresh,
491 unsigned long bg_thresh,
492 unsigned long dirty,
493 unsigned long bdi_thresh,
494 unsigned long bdi_dirty,
495 unsigned long dirty_ratelimit,
496 unsigned long task_ratelimit,
497 unsigned long dirtied,
498 unsigned long period,
499 long pause,
500 unsigned long start_time),
501
502 TP_ARGS(wb, thresh, bg_thresh, dirty, bdi_thresh, bdi_dirty,
503 dirty_ratelimit, task_ratelimit,
504 dirtied, period, pause, start_time),
505
506 TP_STRUCT__entry(
507 __array( char, bdi, 32)
508 __field(unsigned long, limit)
509 __field(unsigned long, setpoint)
510 __field(unsigned long, dirty)
511 __field(unsigned long, bdi_setpoint)
512 __field(unsigned long, bdi_dirty)
513 __field(unsigned long, dirty_ratelimit)
514 __field(unsigned long, task_ratelimit)
515 __field(unsigned int, dirtied)
516 __field(unsigned int, dirtied_pause)
517 __field(unsigned long, paused)
518 __field( long, pause)
519 __field(unsigned long, period)
520 __field( long, think)
521 __field(unsigned int, cgroup_ino)
522 ),
523
524 TP_fast_assign(
525 unsigned long freerun = (thresh + bg_thresh) / 2;
526 strlcpy(__entry->bdi, dev_name(wb->bdi->dev), 32);
527
528 __entry->limit = global_wb_domain.dirty_limit;
529 __entry->setpoint = (global_wb_domain.dirty_limit +
530 freerun) / 2;
531 __entry->dirty = dirty;
532 __entry->bdi_setpoint = __entry->setpoint *
533 bdi_thresh / (thresh + 1);
534 __entry->bdi_dirty = bdi_dirty;
535 __entry->dirty_ratelimit = KBps(dirty_ratelimit);
536 __entry->task_ratelimit = KBps(task_ratelimit);
537 __entry->dirtied = dirtied;
538 __entry->dirtied_pause = current->nr_dirtied_pause;
539 __entry->think = current->dirty_paused_when == 0 ? 0 :
540 (long)(jiffies - current->dirty_paused_when) * 1000/HZ;
541 __entry->period = period * 1000 / HZ;
542 __entry->pause = pause * 1000 / HZ;
543 __entry->paused = (jiffies - start_time) * 1000 / HZ;
544 __entry->cgroup_ino = __trace_wb_assign_cgroup(wb);
545 ),
546
547
548 TP_printk("bdi %s: "
549 "limit=%lu setpoint=%lu dirty=%lu "
550 "bdi_setpoint=%lu bdi_dirty=%lu "
551 "dirty_ratelimit=%lu task_ratelimit=%lu "
552 "dirtied=%u dirtied_pause=%u "
553 "paused=%lu pause=%ld period=%lu think=%ld cgroup_ino=%u",
554 __entry->bdi,
555 __entry->limit,
556 __entry->setpoint,
557 __entry->dirty,
558 __entry->bdi_setpoint,
559 __entry->bdi_dirty,
560 __entry->dirty_ratelimit,
561 __entry->task_ratelimit,
562 __entry->dirtied,
563 __entry->dirtied_pause,
564 __entry->paused, /* ms */
565 __entry->pause, /* ms */
566 __entry->period, /* ms */
567 __entry->think, /* ms */
568 __entry->cgroup_ino
569 )
570);
571
572TRACE_EVENT(writeback_sb_inodes_requeue,
573
574 TP_PROTO(struct inode *inode),
575 TP_ARGS(inode),
576
577 TP_STRUCT__entry(
578 __array(char, name, 32)
579 __field(unsigned long, ino)
580 __field(unsigned long, state)
581 __field(unsigned long, dirtied_when)
582 __field(unsigned int, cgroup_ino)
583 ),
584
585 TP_fast_assign(
586 strncpy(__entry->name,
587 dev_name(inode_to_bdi(inode)->dev), 32);
588 __entry->ino = inode->i_ino;
589 __entry->state = inode->i_state;
590 __entry->dirtied_when = inode->dirtied_when;
591 __entry->cgroup_ino = __trace_wb_assign_cgroup(inode_to_wb(inode));
592 ),
593
594 TP_printk("bdi %s: ino=%lu state=%s dirtied_when=%lu age=%lu cgroup_ino=%u",
595 __entry->name,
596 __entry->ino,
597 show_inode_state(__entry->state),
598 __entry->dirtied_when,
599 (jiffies - __entry->dirtied_when) / HZ,
600 __entry->cgroup_ino
601 )
602);
603
604DECLARE_EVENT_CLASS(writeback_congest_waited_template,
605
606 TP_PROTO(unsigned int usec_timeout, unsigned int usec_delayed),
607
608 TP_ARGS(usec_timeout, usec_delayed),
609
610 TP_STRUCT__entry(
611 __field( unsigned int, usec_timeout )
612 __field( unsigned int, usec_delayed )
613 ),
614
615 TP_fast_assign(
616 __entry->usec_timeout = usec_timeout;
617 __entry->usec_delayed = usec_delayed;
618 ),
619
620 TP_printk("usec_timeout=%u usec_delayed=%u",
621 __entry->usec_timeout,
622 __entry->usec_delayed)
623);
624
625DEFINE_EVENT(writeback_congest_waited_template, writeback_congestion_wait,
626
627 TP_PROTO(unsigned int usec_timeout, unsigned int usec_delayed),
628
629 TP_ARGS(usec_timeout, usec_delayed)
630);
631
632DEFINE_EVENT(writeback_congest_waited_template, writeback_wait_iff_congested,
633
634 TP_PROTO(unsigned int usec_timeout, unsigned int usec_delayed),
635
636 TP_ARGS(usec_timeout, usec_delayed)
637);
638
639DECLARE_EVENT_CLASS(writeback_single_inode_template,
640
641 TP_PROTO(struct inode *inode,
642 struct writeback_control *wbc,
643 unsigned long nr_to_write
644 ),
645
646 TP_ARGS(inode, wbc, nr_to_write),
647
648 TP_STRUCT__entry(
649 __array(char, name, 32)
650 __field(unsigned long, ino)
651 __field(unsigned long, state)
652 __field(unsigned long, dirtied_when)
653 __field(unsigned long, writeback_index)
654 __field(long, nr_to_write)
655 __field(unsigned long, wrote)
656 __field(unsigned int, cgroup_ino)
657 ),
658
659 TP_fast_assign(
660 strncpy(__entry->name,
661 dev_name(inode_to_bdi(inode)->dev), 32);
662 __entry->ino = inode->i_ino;
663 __entry->state = inode->i_state;
664 __entry->dirtied_when = inode->dirtied_when;
665 __entry->writeback_index = inode->i_mapping->writeback_index;
666 __entry->nr_to_write = nr_to_write;
667 __entry->wrote = nr_to_write - wbc->nr_to_write;
668 __entry->cgroup_ino = __trace_wbc_assign_cgroup(wbc);
669 ),
670
671 TP_printk("bdi %s: ino=%lu state=%s dirtied_when=%lu age=%lu "
672 "index=%lu to_write=%ld wrote=%lu cgroup_ino=%u",
673 __entry->name,
674 __entry->ino,
675 show_inode_state(__entry->state),
676 __entry->dirtied_when,
677 (jiffies - __entry->dirtied_when) / HZ,
678 __entry->writeback_index,
679 __entry->nr_to_write,
680 __entry->wrote,
681 __entry->cgroup_ino
682 )
683);
684
685DEFINE_EVENT(writeback_single_inode_template, writeback_single_inode_start,
686 TP_PROTO(struct inode *inode,
687 struct writeback_control *wbc,
688 unsigned long nr_to_write),
689 TP_ARGS(inode, wbc, nr_to_write)
690);
691
692DEFINE_EVENT(writeback_single_inode_template, writeback_single_inode,
693 TP_PROTO(struct inode *inode,
694 struct writeback_control *wbc,
695 unsigned long nr_to_write),
696 TP_ARGS(inode, wbc, nr_to_write)
697);
698
699DECLARE_EVENT_CLASS(writeback_inode_template,
700 TP_PROTO(struct inode *inode),
701
702 TP_ARGS(inode),
703
704 TP_STRUCT__entry(
705 __field( dev_t, dev )
706 __field(unsigned long, ino )
707 __field(unsigned long, state )
708 __field( __u16, mode )
709 __field(unsigned long, dirtied_when )
710 ),
711
712 TP_fast_assign(
713 __entry->dev = inode->i_sb->s_dev;
714 __entry->ino = inode->i_ino;
715 __entry->state = inode->i_state;
716 __entry->mode = inode->i_mode;
717 __entry->dirtied_when = inode->dirtied_when;
718 ),
719
720 TP_printk("dev %d,%d ino %lu dirtied %lu state %s mode 0%o",
721 MAJOR(__entry->dev), MINOR(__entry->dev),
722 __entry->ino, __entry->dirtied_when,
723 show_inode_state(__entry->state), __entry->mode)
724);
725
726DEFINE_EVENT(writeback_inode_template, writeback_lazytime,
727 TP_PROTO(struct inode *inode),
728
729 TP_ARGS(inode)
730);
731
732DEFINE_EVENT(writeback_inode_template, writeback_lazytime_iput,
733 TP_PROTO(struct inode *inode),
734
735 TP_ARGS(inode)
736);
737
738DEFINE_EVENT(writeback_inode_template, writeback_dirty_inode_enqueue,
739
740 TP_PROTO(struct inode *inode),
741
742 TP_ARGS(inode)
743);
744
745/*
746 * Inode writeback list tracking.
747 */
748
749DEFINE_EVENT(writeback_inode_template, sb_mark_inode_writeback,
750 TP_PROTO(struct inode *inode),
751 TP_ARGS(inode)
752);
753
754DEFINE_EVENT(writeback_inode_template, sb_clear_inode_writeback,
755 TP_PROTO(struct inode *inode),
756 TP_ARGS(inode)
757);
758
759#endif /* _TRACE_WRITEBACK_H */
760
761/* This part must be outside protection */
762#include <trace/define_trace.h>