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1/* SPDX-License-Identifier: GPL-2.0 */
2#undef TRACE_SYSTEM
3#define TRACE_SYSTEM writeback
4
5#if !defined(_TRACE_WRITEBACK_H) || defined(TRACE_HEADER_MULTI_READ)
6#define _TRACE_WRITEBACK_H
7
8#include <linux/tracepoint.h>
9#include <linux/backing-dev.h>
10#include <linux/writeback.h>
11
12#define show_inode_state(state) \
13 __print_flags(state, "|", \
14 {I_DIRTY_SYNC, "I_DIRTY_SYNC"}, \
15 {I_DIRTY_DATASYNC, "I_DIRTY_DATASYNC"}, \
16 {I_DIRTY_PAGES, "I_DIRTY_PAGES"}, \
17 {I_NEW, "I_NEW"}, \
18 {I_WILL_FREE, "I_WILL_FREE"}, \
19 {I_FREEING, "I_FREEING"}, \
20 {I_CLEAR, "I_CLEAR"}, \
21 {I_SYNC, "I_SYNC"}, \
22 {I_DIRTY_TIME, "I_DIRTY_TIME"}, \
23 {I_REFERENCED, "I_REFERENCED"}, \
24 {I_LINKABLE, "I_LINKABLE"}, \
25 {I_WB_SWITCH, "I_WB_SWITCH"}, \
26 {I_OVL_INUSE, "I_OVL_INUSE"}, \
27 {I_CREATING, "I_CREATING"}, \
28 {I_DONTCACHE, "I_DONTCACHE"}, \
29 {I_SYNC_QUEUED, "I_SYNC_QUEUED"}, \
30 {I_PINNING_NETFS_WB, "I_PINNING_NETFS_WB"}, \
31 {I_LRU_ISOLATING, "I_LRU_ISOLATING"} \
32 )
33
34/* enums need to be exported to user space */
35#undef EM
36#undef EMe
37#define EM(a,b) TRACE_DEFINE_ENUM(a);
38#define EMe(a,b) TRACE_DEFINE_ENUM(a);
39
40#define WB_WORK_REASON \
41 EM( WB_REASON_BACKGROUND, "background") \
42 EM( WB_REASON_VMSCAN, "vmscan") \
43 EM( WB_REASON_SYNC, "sync") \
44 EM( WB_REASON_PERIODIC, "periodic") \
45 EM( WB_REASON_LAPTOP_TIMER, "laptop_timer") \
46 EM( WB_REASON_FS_FREE_SPACE, "fs_free_space") \
47 EM( WB_REASON_FORKER_THREAD, "forker_thread") \
48 EMe(WB_REASON_FOREIGN_FLUSH, "foreign_flush")
49
50WB_WORK_REASON
51
52/*
53 * Now redefine the EM() and EMe() macros to map the enums to the strings
54 * that will be printed in the output.
55 */
56#undef EM
57#undef EMe
58#define EM(a,b) { a, b },
59#define EMe(a,b) { a, b }
60
61struct wb_writeback_work;
62
63DECLARE_EVENT_CLASS(writeback_folio_template,
64
65 TP_PROTO(struct folio *folio, struct address_space *mapping),
66
67 TP_ARGS(folio, mapping),
68
69 TP_STRUCT__entry (
70 __array(char, name, 32)
71 __field(ino_t, ino)
72 __field(pgoff_t, index)
73 ),
74
75 TP_fast_assign(
76 strscpy_pad(__entry->name,
77 bdi_dev_name(mapping ? inode_to_bdi(mapping->host) :
78 NULL), 32);
79 __entry->ino = (mapping && mapping->host) ? mapping->host->i_ino : 0;
80 __entry->index = folio->index;
81 ),
82
83 TP_printk("bdi %s: ino=%lu index=%lu",
84 __entry->name,
85 (unsigned long)__entry->ino,
86 __entry->index
87 )
88);
89
90DEFINE_EVENT(writeback_folio_template, writeback_dirty_folio,
91
92 TP_PROTO(struct folio *folio, struct address_space *mapping),
93
94 TP_ARGS(folio, mapping)
95);
96
97DEFINE_EVENT(writeback_folio_template, folio_wait_writeback,
98
99 TP_PROTO(struct folio *folio, struct address_space *mapping),
100
101 TP_ARGS(folio, mapping)
102);
103
104DECLARE_EVENT_CLASS(writeback_dirty_inode_template,
105
106 TP_PROTO(struct inode *inode, int flags),
107
108 TP_ARGS(inode, flags),
109
110 TP_STRUCT__entry (
111 __array(char, name, 32)
112 __field(ino_t, ino)
113 __field(unsigned long, state)
114 __field(unsigned long, flags)
115 ),
116
117 TP_fast_assign(
118 struct backing_dev_info *bdi = inode_to_bdi(inode);
119
120 /* may be called for files on pseudo FSes w/ unregistered bdi */
121 strscpy_pad(__entry->name, bdi_dev_name(bdi), 32);
122 __entry->ino = inode->i_ino;
123 __entry->state = inode->i_state;
124 __entry->flags = flags;
125 ),
126
127 TP_printk("bdi %s: ino=%lu state=%s flags=%s",
128 __entry->name,
129 (unsigned long)__entry->ino,
130 show_inode_state(__entry->state),
131 show_inode_state(__entry->flags)
132 )
133);
134
135DEFINE_EVENT(writeback_dirty_inode_template, writeback_mark_inode_dirty,
136
137 TP_PROTO(struct inode *inode, int flags),
138
139 TP_ARGS(inode, flags)
140);
141
142DEFINE_EVENT(writeback_dirty_inode_template, writeback_dirty_inode_start,
143
144 TP_PROTO(struct inode *inode, int flags),
145
146 TP_ARGS(inode, flags)
147);
148
149DEFINE_EVENT(writeback_dirty_inode_template, writeback_dirty_inode,
150
151 TP_PROTO(struct inode *inode, int flags),
152
153 TP_ARGS(inode, flags)
154);
155
156#ifdef CREATE_TRACE_POINTS
157#ifdef CONFIG_CGROUP_WRITEBACK
158
159static inline ino_t __trace_wb_assign_cgroup(struct bdi_writeback *wb)
160{
161 return cgroup_ino(wb->memcg_css->cgroup);
162}
163
164static inline ino_t __trace_wbc_assign_cgroup(struct writeback_control *wbc)
165{
166 if (wbc->wb)
167 return __trace_wb_assign_cgroup(wbc->wb);
168 else
169 return 1;
170}
171#else /* CONFIG_CGROUP_WRITEBACK */
172
173static inline ino_t __trace_wb_assign_cgroup(struct bdi_writeback *wb)
174{
175 return 1;
176}
177
178static inline ino_t __trace_wbc_assign_cgroup(struct writeback_control *wbc)
179{
180 return 1;
181}
182
183#endif /* CONFIG_CGROUP_WRITEBACK */
184#endif /* CREATE_TRACE_POINTS */
185
186#ifdef CONFIG_CGROUP_WRITEBACK
187TRACE_EVENT(inode_foreign_history,
188
189 TP_PROTO(struct inode *inode, struct writeback_control *wbc,
190 unsigned int history),
191
192 TP_ARGS(inode, wbc, history),
193
194 TP_STRUCT__entry(
195 __array(char, name, 32)
196 __field(ino_t, ino)
197 __field(ino_t, cgroup_ino)
198 __field(unsigned int, history)
199 ),
200
201 TP_fast_assign(
202 strscpy_pad(__entry->name, bdi_dev_name(inode_to_bdi(inode)), 32);
203 __entry->ino = inode->i_ino;
204 __entry->cgroup_ino = __trace_wbc_assign_cgroup(wbc);
205 __entry->history = history;
206 ),
207
208 TP_printk("bdi %s: ino=%lu cgroup_ino=%lu history=0x%x",
209 __entry->name,
210 (unsigned long)__entry->ino,
211 (unsigned long)__entry->cgroup_ino,
212 __entry->history
213 )
214);
215
216TRACE_EVENT(inode_switch_wbs,
217
218 TP_PROTO(struct inode *inode, struct bdi_writeback *old_wb,
219 struct bdi_writeback *new_wb),
220
221 TP_ARGS(inode, old_wb, new_wb),
222
223 TP_STRUCT__entry(
224 __array(char, name, 32)
225 __field(ino_t, ino)
226 __field(ino_t, old_cgroup_ino)
227 __field(ino_t, new_cgroup_ino)
228 ),
229
230 TP_fast_assign(
231 strscpy_pad(__entry->name, bdi_dev_name(old_wb->bdi), 32);
232 __entry->ino = inode->i_ino;
233 __entry->old_cgroup_ino = __trace_wb_assign_cgroup(old_wb);
234 __entry->new_cgroup_ino = __trace_wb_assign_cgroup(new_wb);
235 ),
236
237 TP_printk("bdi %s: ino=%lu old_cgroup_ino=%lu new_cgroup_ino=%lu",
238 __entry->name,
239 (unsigned long)__entry->ino,
240 (unsigned long)__entry->old_cgroup_ino,
241 (unsigned long)__entry->new_cgroup_ino
242 )
243);
244
245TRACE_EVENT(track_foreign_dirty,
246
247 TP_PROTO(struct folio *folio, struct bdi_writeback *wb),
248
249 TP_ARGS(folio, wb),
250
251 TP_STRUCT__entry(
252 __array(char, name, 32)
253 __field(u64, bdi_id)
254 __field(ino_t, ino)
255 __field(unsigned int, memcg_id)
256 __field(ino_t, cgroup_ino)
257 __field(ino_t, page_cgroup_ino)
258 ),
259
260 TP_fast_assign(
261 struct address_space *mapping = folio_mapping(folio);
262 struct inode *inode = mapping ? mapping->host : NULL;
263
264 strscpy_pad(__entry->name, bdi_dev_name(wb->bdi), 32);
265 __entry->bdi_id = wb->bdi->id;
266 __entry->ino = inode ? inode->i_ino : 0;
267 __entry->memcg_id = wb->memcg_css->id;
268 __entry->cgroup_ino = __trace_wb_assign_cgroup(wb);
269 __entry->page_cgroup_ino = cgroup_ino(folio_memcg(folio)->css.cgroup);
270 ),
271
272 TP_printk("bdi %s[%llu]: ino=%lu memcg_id=%u cgroup_ino=%lu page_cgroup_ino=%lu",
273 __entry->name,
274 __entry->bdi_id,
275 (unsigned long)__entry->ino,
276 __entry->memcg_id,
277 (unsigned long)__entry->cgroup_ino,
278 (unsigned long)__entry->page_cgroup_ino
279 )
280);
281
282TRACE_EVENT(flush_foreign,
283
284 TP_PROTO(struct bdi_writeback *wb, unsigned int frn_bdi_id,
285 unsigned int frn_memcg_id),
286
287 TP_ARGS(wb, frn_bdi_id, frn_memcg_id),
288
289 TP_STRUCT__entry(
290 __array(char, name, 32)
291 __field(ino_t, cgroup_ino)
292 __field(unsigned int, frn_bdi_id)
293 __field(unsigned int, frn_memcg_id)
294 ),
295
296 TP_fast_assign(
297 strscpy_pad(__entry->name, bdi_dev_name(wb->bdi), 32);
298 __entry->cgroup_ino = __trace_wb_assign_cgroup(wb);
299 __entry->frn_bdi_id = frn_bdi_id;
300 __entry->frn_memcg_id = frn_memcg_id;
301 ),
302
303 TP_printk("bdi %s: cgroup_ino=%lu frn_bdi_id=%u frn_memcg_id=%u",
304 __entry->name,
305 (unsigned long)__entry->cgroup_ino,
306 __entry->frn_bdi_id,
307 __entry->frn_memcg_id
308 )
309);
310#endif
311
312DECLARE_EVENT_CLASS(writeback_write_inode_template,
313
314 TP_PROTO(struct inode *inode, struct writeback_control *wbc),
315
316 TP_ARGS(inode, wbc),
317
318 TP_STRUCT__entry (
319 __array(char, name, 32)
320 __field(ino_t, ino)
321 __field(int, sync_mode)
322 __field(ino_t, cgroup_ino)
323 ),
324
325 TP_fast_assign(
326 strscpy_pad(__entry->name,
327 bdi_dev_name(inode_to_bdi(inode)), 32);
328 __entry->ino = inode->i_ino;
329 __entry->sync_mode = wbc->sync_mode;
330 __entry->cgroup_ino = __trace_wbc_assign_cgroup(wbc);
331 ),
332
333 TP_printk("bdi %s: ino=%lu sync_mode=%d cgroup_ino=%lu",
334 __entry->name,
335 (unsigned long)__entry->ino,
336 __entry->sync_mode,
337 (unsigned long)__entry->cgroup_ino
338 )
339);
340
341DEFINE_EVENT(writeback_write_inode_template, writeback_write_inode_start,
342
343 TP_PROTO(struct inode *inode, struct writeback_control *wbc),
344
345 TP_ARGS(inode, wbc)
346);
347
348DEFINE_EVENT(writeback_write_inode_template, writeback_write_inode,
349
350 TP_PROTO(struct inode *inode, struct writeback_control *wbc),
351
352 TP_ARGS(inode, wbc)
353);
354
355DECLARE_EVENT_CLASS(writeback_work_class,
356 TP_PROTO(struct bdi_writeback *wb, struct wb_writeback_work *work),
357 TP_ARGS(wb, work),
358 TP_STRUCT__entry(
359 __array(char, name, 32)
360 __field(long, nr_pages)
361 __field(dev_t, sb_dev)
362 __field(int, sync_mode)
363 __field(int, for_kupdate)
364 __field(int, range_cyclic)
365 __field(int, for_background)
366 __field(int, reason)
367 __field(ino_t, cgroup_ino)
368 ),
369 TP_fast_assign(
370 strscpy_pad(__entry->name, bdi_dev_name(wb->bdi), 32);
371 __entry->nr_pages = work->nr_pages;
372 __entry->sb_dev = work->sb ? work->sb->s_dev : 0;
373 __entry->sync_mode = work->sync_mode;
374 __entry->for_kupdate = work->for_kupdate;
375 __entry->range_cyclic = work->range_cyclic;
376 __entry->for_background = work->for_background;
377 __entry->reason = work->reason;
378 __entry->cgroup_ino = __trace_wb_assign_cgroup(wb);
379 ),
380 TP_printk("bdi %s: sb_dev %d:%d nr_pages=%ld sync_mode=%d "
381 "kupdate=%d range_cyclic=%d background=%d reason=%s cgroup_ino=%lu",
382 __entry->name,
383 MAJOR(__entry->sb_dev), MINOR(__entry->sb_dev),
384 __entry->nr_pages,
385 __entry->sync_mode,
386 __entry->for_kupdate,
387 __entry->range_cyclic,
388 __entry->for_background,
389 __print_symbolic(__entry->reason, WB_WORK_REASON),
390 (unsigned long)__entry->cgroup_ino
391 )
392);
393#define DEFINE_WRITEBACK_WORK_EVENT(name) \
394DEFINE_EVENT(writeback_work_class, name, \
395 TP_PROTO(struct bdi_writeback *wb, struct wb_writeback_work *work), \
396 TP_ARGS(wb, work))
397DEFINE_WRITEBACK_WORK_EVENT(writeback_queue);
398DEFINE_WRITEBACK_WORK_EVENT(writeback_exec);
399DEFINE_WRITEBACK_WORK_EVENT(writeback_start);
400DEFINE_WRITEBACK_WORK_EVENT(writeback_written);
401DEFINE_WRITEBACK_WORK_EVENT(writeback_wait);
402
403TRACE_EVENT(writeback_pages_written,
404 TP_PROTO(long pages_written),
405 TP_ARGS(pages_written),
406 TP_STRUCT__entry(
407 __field(long, pages)
408 ),
409 TP_fast_assign(
410 __entry->pages = pages_written;
411 ),
412 TP_printk("%ld", __entry->pages)
413);
414
415DECLARE_EVENT_CLASS(writeback_class,
416 TP_PROTO(struct bdi_writeback *wb),
417 TP_ARGS(wb),
418 TP_STRUCT__entry(
419 __array(char, name, 32)
420 __field(ino_t, cgroup_ino)
421 ),
422 TP_fast_assign(
423 strscpy_pad(__entry->name, bdi_dev_name(wb->bdi), 32);
424 __entry->cgroup_ino = __trace_wb_assign_cgroup(wb);
425 ),
426 TP_printk("bdi %s: cgroup_ino=%lu",
427 __entry->name,
428 (unsigned long)__entry->cgroup_ino
429 )
430);
431#define DEFINE_WRITEBACK_EVENT(name) \
432DEFINE_EVENT(writeback_class, name, \
433 TP_PROTO(struct bdi_writeback *wb), \
434 TP_ARGS(wb))
435
436DEFINE_WRITEBACK_EVENT(writeback_wake_background);
437
438TRACE_EVENT(writeback_bdi_register,
439 TP_PROTO(struct backing_dev_info *bdi),
440 TP_ARGS(bdi),
441 TP_STRUCT__entry(
442 __array(char, name, 32)
443 ),
444 TP_fast_assign(
445 strscpy_pad(__entry->name, bdi_dev_name(bdi), 32);
446 ),
447 TP_printk("bdi %s",
448 __entry->name
449 )
450);
451
452DECLARE_EVENT_CLASS(wbc_class,
453 TP_PROTO(struct writeback_control *wbc, struct backing_dev_info *bdi),
454 TP_ARGS(wbc, bdi),
455 TP_STRUCT__entry(
456 __array(char, name, 32)
457 __field(long, nr_to_write)
458 __field(long, pages_skipped)
459 __field(int, sync_mode)
460 __field(int, for_kupdate)
461 __field(int, for_background)
462 __field(int, for_reclaim)
463 __field(int, range_cyclic)
464 __field(long, range_start)
465 __field(long, range_end)
466 __field(ino_t, cgroup_ino)
467 ),
468
469 TP_fast_assign(
470 strscpy_pad(__entry->name, bdi_dev_name(bdi), 32);
471 __entry->nr_to_write = wbc->nr_to_write;
472 __entry->pages_skipped = wbc->pages_skipped;
473 __entry->sync_mode = wbc->sync_mode;
474 __entry->for_kupdate = wbc->for_kupdate;
475 __entry->for_background = wbc->for_background;
476 __entry->for_reclaim = wbc->for_reclaim;
477 __entry->range_cyclic = wbc->range_cyclic;
478 __entry->range_start = (long)wbc->range_start;
479 __entry->range_end = (long)wbc->range_end;
480 __entry->cgroup_ino = __trace_wbc_assign_cgroup(wbc);
481 ),
482
483 TP_printk("bdi %s: towrt=%ld skip=%ld mode=%d kupd=%d "
484 "bgrd=%d reclm=%d cyclic=%d "
485 "start=0x%lx end=0x%lx cgroup_ino=%lu",
486 __entry->name,
487 __entry->nr_to_write,
488 __entry->pages_skipped,
489 __entry->sync_mode,
490 __entry->for_kupdate,
491 __entry->for_background,
492 __entry->for_reclaim,
493 __entry->range_cyclic,
494 __entry->range_start,
495 __entry->range_end,
496 (unsigned long)__entry->cgroup_ino
497 )
498)
499
500#define DEFINE_WBC_EVENT(name) \
501DEFINE_EVENT(wbc_class, name, \
502 TP_PROTO(struct writeback_control *wbc, struct backing_dev_info *bdi), \
503 TP_ARGS(wbc, bdi))
504DEFINE_WBC_EVENT(wbc_writepage);
505
506TRACE_EVENT(writeback_queue_io,
507 TP_PROTO(struct bdi_writeback *wb,
508 struct wb_writeback_work *work,
509 unsigned long dirtied_before,
510 int moved),
511 TP_ARGS(wb, work, dirtied_before, moved),
512 TP_STRUCT__entry(
513 __array(char, name, 32)
514 __field(unsigned long, older)
515 __field(long, age)
516 __field(int, moved)
517 __field(int, reason)
518 __field(ino_t, cgroup_ino)
519 ),
520 TP_fast_assign(
521 strscpy_pad(__entry->name, bdi_dev_name(wb->bdi), 32);
522 __entry->older = dirtied_before;
523 __entry->age = (jiffies - dirtied_before) * 1000 / HZ;
524 __entry->moved = moved;
525 __entry->reason = work->reason;
526 __entry->cgroup_ino = __trace_wb_assign_cgroup(wb);
527 ),
528 TP_printk("bdi %s: older=%lu age=%ld enqueue=%d reason=%s cgroup_ino=%lu",
529 __entry->name,
530 __entry->older, /* dirtied_before in jiffies */
531 __entry->age, /* dirtied_before in relative milliseconds */
532 __entry->moved,
533 __print_symbolic(__entry->reason, WB_WORK_REASON),
534 (unsigned long)__entry->cgroup_ino
535 )
536);
537
538TRACE_EVENT(global_dirty_state,
539
540 TP_PROTO(unsigned long background_thresh,
541 unsigned long dirty_thresh
542 ),
543
544 TP_ARGS(background_thresh,
545 dirty_thresh
546 ),
547
548 TP_STRUCT__entry(
549 __field(unsigned long, nr_dirty)
550 __field(unsigned long, nr_writeback)
551 __field(unsigned long, background_thresh)
552 __field(unsigned long, dirty_thresh)
553 __field(unsigned long, dirty_limit)
554 __field(unsigned long, nr_dirtied)
555 __field(unsigned long, nr_written)
556 ),
557
558 TP_fast_assign(
559 __entry->nr_dirty = global_node_page_state(NR_FILE_DIRTY);
560 __entry->nr_writeback = global_node_page_state(NR_WRITEBACK);
561 __entry->nr_dirtied = global_node_page_state(NR_DIRTIED);
562 __entry->nr_written = global_node_page_state(NR_WRITTEN);
563 __entry->background_thresh = background_thresh;
564 __entry->dirty_thresh = dirty_thresh;
565 __entry->dirty_limit = global_wb_domain.dirty_limit;
566 ),
567
568 TP_printk("dirty=%lu writeback=%lu "
569 "bg_thresh=%lu thresh=%lu limit=%lu "
570 "dirtied=%lu written=%lu",
571 __entry->nr_dirty,
572 __entry->nr_writeback,
573 __entry->background_thresh,
574 __entry->dirty_thresh,
575 __entry->dirty_limit,
576 __entry->nr_dirtied,
577 __entry->nr_written
578 )
579);
580
581#define KBps(x) ((x) << (PAGE_SHIFT - 10))
582
583TRACE_EVENT(bdi_dirty_ratelimit,
584
585 TP_PROTO(struct bdi_writeback *wb,
586 unsigned long dirty_rate,
587 unsigned long task_ratelimit),
588
589 TP_ARGS(wb, dirty_rate, task_ratelimit),
590
591 TP_STRUCT__entry(
592 __array(char, bdi, 32)
593 __field(unsigned long, write_bw)
594 __field(unsigned long, avg_write_bw)
595 __field(unsigned long, dirty_rate)
596 __field(unsigned long, dirty_ratelimit)
597 __field(unsigned long, task_ratelimit)
598 __field(unsigned long, balanced_dirty_ratelimit)
599 __field(ino_t, cgroup_ino)
600 ),
601
602 TP_fast_assign(
603 strscpy_pad(__entry->bdi, bdi_dev_name(wb->bdi), 32);
604 __entry->write_bw = KBps(wb->write_bandwidth);
605 __entry->avg_write_bw = KBps(wb->avg_write_bandwidth);
606 __entry->dirty_rate = KBps(dirty_rate);
607 __entry->dirty_ratelimit = KBps(wb->dirty_ratelimit);
608 __entry->task_ratelimit = KBps(task_ratelimit);
609 __entry->balanced_dirty_ratelimit =
610 KBps(wb->balanced_dirty_ratelimit);
611 __entry->cgroup_ino = __trace_wb_assign_cgroup(wb);
612 ),
613
614 TP_printk("bdi %s: "
615 "write_bw=%lu awrite_bw=%lu dirty_rate=%lu "
616 "dirty_ratelimit=%lu task_ratelimit=%lu "
617 "balanced_dirty_ratelimit=%lu cgroup_ino=%lu",
618 __entry->bdi,
619 __entry->write_bw, /* write bandwidth */
620 __entry->avg_write_bw, /* avg write bandwidth */
621 __entry->dirty_rate, /* bdi dirty rate */
622 __entry->dirty_ratelimit, /* base ratelimit */
623 __entry->task_ratelimit, /* ratelimit with position control */
624 __entry->balanced_dirty_ratelimit, /* the balanced ratelimit */
625 (unsigned long)__entry->cgroup_ino
626 )
627);
628
629TRACE_EVENT(balance_dirty_pages,
630
631 TP_PROTO(struct bdi_writeback *wb,
632 unsigned long thresh,
633 unsigned long bg_thresh,
634 unsigned long dirty,
635 unsigned long bdi_thresh,
636 unsigned long bdi_dirty,
637 unsigned long dirty_ratelimit,
638 unsigned long task_ratelimit,
639 unsigned long dirtied,
640 unsigned long period,
641 long pause,
642 unsigned long start_time),
643
644 TP_ARGS(wb, thresh, bg_thresh, dirty, bdi_thresh, bdi_dirty,
645 dirty_ratelimit, task_ratelimit,
646 dirtied, period, pause, start_time),
647
648 TP_STRUCT__entry(
649 __array( char, bdi, 32)
650 __field(unsigned long, limit)
651 __field(unsigned long, setpoint)
652 __field(unsigned long, dirty)
653 __field(unsigned long, bdi_setpoint)
654 __field(unsigned long, bdi_dirty)
655 __field(unsigned long, dirty_ratelimit)
656 __field(unsigned long, task_ratelimit)
657 __field(unsigned int, dirtied)
658 __field(unsigned int, dirtied_pause)
659 __field(unsigned long, paused)
660 __field( long, pause)
661 __field(unsigned long, period)
662 __field( long, think)
663 __field(ino_t, cgroup_ino)
664 ),
665
666 TP_fast_assign(
667 unsigned long freerun = (thresh + bg_thresh) / 2;
668 strscpy_pad(__entry->bdi, bdi_dev_name(wb->bdi), 32);
669
670 __entry->limit = global_wb_domain.dirty_limit;
671 __entry->setpoint = (global_wb_domain.dirty_limit +
672 freerun) / 2;
673 __entry->dirty = dirty;
674 __entry->bdi_setpoint = __entry->setpoint *
675 bdi_thresh / (thresh + 1);
676 __entry->bdi_dirty = bdi_dirty;
677 __entry->dirty_ratelimit = KBps(dirty_ratelimit);
678 __entry->task_ratelimit = KBps(task_ratelimit);
679 __entry->dirtied = dirtied;
680 __entry->dirtied_pause = current->nr_dirtied_pause;
681 __entry->think = current->dirty_paused_when == 0 ? 0 :
682 (long)(jiffies - current->dirty_paused_when) * 1000/HZ;
683 __entry->period = period * 1000 / HZ;
684 __entry->pause = pause * 1000 / HZ;
685 __entry->paused = (jiffies - start_time) * 1000 / HZ;
686 __entry->cgroup_ino = __trace_wb_assign_cgroup(wb);
687 ),
688
689
690 TP_printk("bdi %s: "
691 "limit=%lu setpoint=%lu dirty=%lu "
692 "bdi_setpoint=%lu bdi_dirty=%lu "
693 "dirty_ratelimit=%lu task_ratelimit=%lu "
694 "dirtied=%u dirtied_pause=%u "
695 "paused=%lu pause=%ld period=%lu think=%ld cgroup_ino=%lu",
696 __entry->bdi,
697 __entry->limit,
698 __entry->setpoint,
699 __entry->dirty,
700 __entry->bdi_setpoint,
701 __entry->bdi_dirty,
702 __entry->dirty_ratelimit,
703 __entry->task_ratelimit,
704 __entry->dirtied,
705 __entry->dirtied_pause,
706 __entry->paused, /* ms */
707 __entry->pause, /* ms */
708 __entry->period, /* ms */
709 __entry->think, /* ms */
710 (unsigned long)__entry->cgroup_ino
711 )
712);
713
714TRACE_EVENT(writeback_sb_inodes_requeue,
715
716 TP_PROTO(struct inode *inode),
717 TP_ARGS(inode),
718
719 TP_STRUCT__entry(
720 __array(char, name, 32)
721 __field(ino_t, ino)
722 __field(unsigned long, state)
723 __field(unsigned long, dirtied_when)
724 __field(ino_t, cgroup_ino)
725 ),
726
727 TP_fast_assign(
728 strscpy_pad(__entry->name,
729 bdi_dev_name(inode_to_bdi(inode)), 32);
730 __entry->ino = inode->i_ino;
731 __entry->state = inode->i_state;
732 __entry->dirtied_when = inode->dirtied_when;
733 __entry->cgroup_ino = __trace_wb_assign_cgroup(inode_to_wb(inode));
734 ),
735
736 TP_printk("bdi %s: ino=%lu state=%s dirtied_when=%lu age=%lu cgroup_ino=%lu",
737 __entry->name,
738 (unsigned long)__entry->ino,
739 show_inode_state(__entry->state),
740 __entry->dirtied_when,
741 (jiffies - __entry->dirtied_when) / HZ,
742 (unsigned long)__entry->cgroup_ino
743 )
744);
745
746DECLARE_EVENT_CLASS(writeback_single_inode_template,
747
748 TP_PROTO(struct inode *inode,
749 struct writeback_control *wbc,
750 unsigned long nr_to_write
751 ),
752
753 TP_ARGS(inode, wbc, nr_to_write),
754
755 TP_STRUCT__entry(
756 __array(char, name, 32)
757 __field(ino_t, ino)
758 __field(unsigned long, state)
759 __field(unsigned long, dirtied_when)
760 __field(unsigned long, writeback_index)
761 __field(long, nr_to_write)
762 __field(unsigned long, wrote)
763 __field(ino_t, cgroup_ino)
764 ),
765
766 TP_fast_assign(
767 strscpy_pad(__entry->name,
768 bdi_dev_name(inode_to_bdi(inode)), 32);
769 __entry->ino = inode->i_ino;
770 __entry->state = inode->i_state;
771 __entry->dirtied_when = inode->dirtied_when;
772 __entry->writeback_index = inode->i_mapping->writeback_index;
773 __entry->nr_to_write = nr_to_write;
774 __entry->wrote = nr_to_write - wbc->nr_to_write;
775 __entry->cgroup_ino = __trace_wbc_assign_cgroup(wbc);
776 ),
777
778 TP_printk("bdi %s: ino=%lu state=%s dirtied_when=%lu age=%lu "
779 "index=%lu to_write=%ld wrote=%lu cgroup_ino=%lu",
780 __entry->name,
781 (unsigned long)__entry->ino,
782 show_inode_state(__entry->state),
783 __entry->dirtied_when,
784 (jiffies - __entry->dirtied_when) / HZ,
785 __entry->writeback_index,
786 __entry->nr_to_write,
787 __entry->wrote,
788 (unsigned long)__entry->cgroup_ino
789 )
790);
791
792DEFINE_EVENT(writeback_single_inode_template, writeback_single_inode_start,
793 TP_PROTO(struct inode *inode,
794 struct writeback_control *wbc,
795 unsigned long nr_to_write),
796 TP_ARGS(inode, wbc, nr_to_write)
797);
798
799DEFINE_EVENT(writeback_single_inode_template, writeback_single_inode,
800 TP_PROTO(struct inode *inode,
801 struct writeback_control *wbc,
802 unsigned long nr_to_write),
803 TP_ARGS(inode, wbc, nr_to_write)
804);
805
806DECLARE_EVENT_CLASS(writeback_inode_template,
807 TP_PROTO(struct inode *inode),
808
809 TP_ARGS(inode),
810
811 TP_STRUCT__entry(
812 __field( dev_t, dev )
813 __field( ino_t, ino )
814 __field(unsigned long, state )
815 __field( __u16, mode )
816 __field(unsigned long, dirtied_when )
817 ),
818
819 TP_fast_assign(
820 __entry->dev = inode->i_sb->s_dev;
821 __entry->ino = inode->i_ino;
822 __entry->state = inode->i_state;
823 __entry->mode = inode->i_mode;
824 __entry->dirtied_when = inode->dirtied_when;
825 ),
826
827 TP_printk("dev %d,%d ino %lu dirtied %lu state %s mode 0%o",
828 MAJOR(__entry->dev), MINOR(__entry->dev),
829 (unsigned long)__entry->ino, __entry->dirtied_when,
830 show_inode_state(__entry->state), __entry->mode)
831);
832
833DEFINE_EVENT(writeback_inode_template, writeback_lazytime,
834 TP_PROTO(struct inode *inode),
835
836 TP_ARGS(inode)
837);
838
839DEFINE_EVENT(writeback_inode_template, writeback_lazytime_iput,
840 TP_PROTO(struct inode *inode),
841
842 TP_ARGS(inode)
843);
844
845DEFINE_EVENT(writeback_inode_template, writeback_dirty_inode_enqueue,
846
847 TP_PROTO(struct inode *inode),
848
849 TP_ARGS(inode)
850);
851
852/*
853 * Inode writeback list tracking.
854 */
855
856DEFINE_EVENT(writeback_inode_template, sb_mark_inode_writeback,
857 TP_PROTO(struct inode *inode),
858 TP_ARGS(inode)
859);
860
861DEFINE_EVENT(writeback_inode_template, sb_clear_inode_writeback,
862 TP_PROTO(struct inode *inode),
863 TP_ARGS(inode)
864);
865
866#endif /* _TRACE_WRITEBACK_H */
867
868/* This part must be outside protection */
869#include <trace/define_trace.h>
1#undef TRACE_SYSTEM
2#define TRACE_SYSTEM writeback
3
4#if !defined(_TRACE_WRITEBACK_H) || defined(TRACE_HEADER_MULTI_READ)
5#define _TRACE_WRITEBACK_H
6
7#include <linux/backing-dev.h>
8#include <linux/writeback.h>
9
10#define show_inode_state(state) \
11 __print_flags(state, "|", \
12 {I_DIRTY_SYNC, "I_DIRTY_SYNC"}, \
13 {I_DIRTY_DATASYNC, "I_DIRTY_DATASYNC"}, \
14 {I_DIRTY_PAGES, "I_DIRTY_PAGES"}, \
15 {I_NEW, "I_NEW"}, \
16 {I_WILL_FREE, "I_WILL_FREE"}, \
17 {I_FREEING, "I_FREEING"}, \
18 {I_CLEAR, "I_CLEAR"}, \
19 {I_SYNC, "I_SYNC"}, \
20 {I_REFERENCED, "I_REFERENCED"} \
21 )
22
23#define WB_WORK_REASON \
24 {WB_REASON_BACKGROUND, "background"}, \
25 {WB_REASON_TRY_TO_FREE_PAGES, "try_to_free_pages"}, \
26 {WB_REASON_SYNC, "sync"}, \
27 {WB_REASON_PERIODIC, "periodic"}, \
28 {WB_REASON_LAPTOP_TIMER, "laptop_timer"}, \
29 {WB_REASON_FREE_MORE_MEM, "free_more_memory"}, \
30 {WB_REASON_FS_FREE_SPACE, "fs_free_space"}, \
31 {WB_REASON_FORKER_THREAD, "forker_thread"}
32
33struct wb_writeback_work;
34
35DECLARE_EVENT_CLASS(writeback_work_class,
36 TP_PROTO(struct backing_dev_info *bdi, struct wb_writeback_work *work),
37 TP_ARGS(bdi, work),
38 TP_STRUCT__entry(
39 __array(char, name, 32)
40 __field(long, nr_pages)
41 __field(dev_t, sb_dev)
42 __field(int, sync_mode)
43 __field(int, for_kupdate)
44 __field(int, range_cyclic)
45 __field(int, for_background)
46 __field(int, reason)
47 ),
48 TP_fast_assign(
49 struct device *dev = bdi->dev;
50 if (!dev)
51 dev = default_backing_dev_info.dev;
52 strncpy(__entry->name, dev_name(dev), 32);
53 __entry->nr_pages = work->nr_pages;
54 __entry->sb_dev = work->sb ? work->sb->s_dev : 0;
55 __entry->sync_mode = work->sync_mode;
56 __entry->for_kupdate = work->for_kupdate;
57 __entry->range_cyclic = work->range_cyclic;
58 __entry->for_background = work->for_background;
59 __entry->reason = work->reason;
60 ),
61 TP_printk("bdi %s: sb_dev %d:%d nr_pages=%ld sync_mode=%d "
62 "kupdate=%d range_cyclic=%d background=%d reason=%s",
63 __entry->name,
64 MAJOR(__entry->sb_dev), MINOR(__entry->sb_dev),
65 __entry->nr_pages,
66 __entry->sync_mode,
67 __entry->for_kupdate,
68 __entry->range_cyclic,
69 __entry->for_background,
70 __print_symbolic(__entry->reason, WB_WORK_REASON)
71 )
72);
73#define DEFINE_WRITEBACK_WORK_EVENT(name) \
74DEFINE_EVENT(writeback_work_class, name, \
75 TP_PROTO(struct backing_dev_info *bdi, struct wb_writeback_work *work), \
76 TP_ARGS(bdi, work))
77DEFINE_WRITEBACK_WORK_EVENT(writeback_nothread);
78DEFINE_WRITEBACK_WORK_EVENT(writeback_queue);
79DEFINE_WRITEBACK_WORK_EVENT(writeback_exec);
80DEFINE_WRITEBACK_WORK_EVENT(writeback_start);
81DEFINE_WRITEBACK_WORK_EVENT(writeback_written);
82DEFINE_WRITEBACK_WORK_EVENT(writeback_wait);
83
84TRACE_EVENT(writeback_pages_written,
85 TP_PROTO(long pages_written),
86 TP_ARGS(pages_written),
87 TP_STRUCT__entry(
88 __field(long, pages)
89 ),
90 TP_fast_assign(
91 __entry->pages = pages_written;
92 ),
93 TP_printk("%ld", __entry->pages)
94);
95
96DECLARE_EVENT_CLASS(writeback_class,
97 TP_PROTO(struct backing_dev_info *bdi),
98 TP_ARGS(bdi),
99 TP_STRUCT__entry(
100 __array(char, name, 32)
101 ),
102 TP_fast_assign(
103 strncpy(__entry->name, dev_name(bdi->dev), 32);
104 ),
105 TP_printk("bdi %s",
106 __entry->name
107 )
108);
109#define DEFINE_WRITEBACK_EVENT(name) \
110DEFINE_EVENT(writeback_class, name, \
111 TP_PROTO(struct backing_dev_info *bdi), \
112 TP_ARGS(bdi))
113
114DEFINE_WRITEBACK_EVENT(writeback_nowork);
115DEFINE_WRITEBACK_EVENT(writeback_wake_background);
116DEFINE_WRITEBACK_EVENT(writeback_wake_thread);
117DEFINE_WRITEBACK_EVENT(writeback_wake_forker_thread);
118DEFINE_WRITEBACK_EVENT(writeback_bdi_register);
119DEFINE_WRITEBACK_EVENT(writeback_bdi_unregister);
120DEFINE_WRITEBACK_EVENT(writeback_thread_start);
121DEFINE_WRITEBACK_EVENT(writeback_thread_stop);
122
123DECLARE_EVENT_CLASS(wbc_class,
124 TP_PROTO(struct writeback_control *wbc, struct backing_dev_info *bdi),
125 TP_ARGS(wbc, bdi),
126 TP_STRUCT__entry(
127 __array(char, name, 32)
128 __field(long, nr_to_write)
129 __field(long, pages_skipped)
130 __field(int, sync_mode)
131 __field(int, for_kupdate)
132 __field(int, for_background)
133 __field(int, for_reclaim)
134 __field(int, range_cyclic)
135 __field(long, range_start)
136 __field(long, range_end)
137 ),
138
139 TP_fast_assign(
140 strncpy(__entry->name, dev_name(bdi->dev), 32);
141 __entry->nr_to_write = wbc->nr_to_write;
142 __entry->pages_skipped = wbc->pages_skipped;
143 __entry->sync_mode = wbc->sync_mode;
144 __entry->for_kupdate = wbc->for_kupdate;
145 __entry->for_background = wbc->for_background;
146 __entry->for_reclaim = wbc->for_reclaim;
147 __entry->range_cyclic = wbc->range_cyclic;
148 __entry->range_start = (long)wbc->range_start;
149 __entry->range_end = (long)wbc->range_end;
150 ),
151
152 TP_printk("bdi %s: towrt=%ld skip=%ld mode=%d kupd=%d "
153 "bgrd=%d reclm=%d cyclic=%d "
154 "start=0x%lx end=0x%lx",
155 __entry->name,
156 __entry->nr_to_write,
157 __entry->pages_skipped,
158 __entry->sync_mode,
159 __entry->for_kupdate,
160 __entry->for_background,
161 __entry->for_reclaim,
162 __entry->range_cyclic,
163 __entry->range_start,
164 __entry->range_end)
165)
166
167#define DEFINE_WBC_EVENT(name) \
168DEFINE_EVENT(wbc_class, name, \
169 TP_PROTO(struct writeback_control *wbc, struct backing_dev_info *bdi), \
170 TP_ARGS(wbc, bdi))
171DEFINE_WBC_EVENT(wbc_writepage);
172
173TRACE_EVENT(writeback_queue_io,
174 TP_PROTO(struct bdi_writeback *wb,
175 struct wb_writeback_work *work,
176 int moved),
177 TP_ARGS(wb, work, moved),
178 TP_STRUCT__entry(
179 __array(char, name, 32)
180 __field(unsigned long, older)
181 __field(long, age)
182 __field(int, moved)
183 __field(int, reason)
184 ),
185 TP_fast_assign(
186 unsigned long *older_than_this = work->older_than_this;
187 strncpy(__entry->name, dev_name(wb->bdi->dev), 32);
188 __entry->older = older_than_this ? *older_than_this : 0;
189 __entry->age = older_than_this ?
190 (jiffies - *older_than_this) * 1000 / HZ : -1;
191 __entry->moved = moved;
192 __entry->reason = work->reason;
193 ),
194 TP_printk("bdi %s: older=%lu age=%ld enqueue=%d reason=%s",
195 __entry->name,
196 __entry->older, /* older_than_this in jiffies */
197 __entry->age, /* older_than_this in relative milliseconds */
198 __entry->moved,
199 __print_symbolic(__entry->reason, WB_WORK_REASON)
200 )
201);
202
203TRACE_EVENT(global_dirty_state,
204
205 TP_PROTO(unsigned long background_thresh,
206 unsigned long dirty_thresh
207 ),
208
209 TP_ARGS(background_thresh,
210 dirty_thresh
211 ),
212
213 TP_STRUCT__entry(
214 __field(unsigned long, nr_dirty)
215 __field(unsigned long, nr_writeback)
216 __field(unsigned long, nr_unstable)
217 __field(unsigned long, background_thresh)
218 __field(unsigned long, dirty_thresh)
219 __field(unsigned long, dirty_limit)
220 __field(unsigned long, nr_dirtied)
221 __field(unsigned long, nr_written)
222 ),
223
224 TP_fast_assign(
225 __entry->nr_dirty = global_page_state(NR_FILE_DIRTY);
226 __entry->nr_writeback = global_page_state(NR_WRITEBACK);
227 __entry->nr_unstable = global_page_state(NR_UNSTABLE_NFS);
228 __entry->nr_dirtied = global_page_state(NR_DIRTIED);
229 __entry->nr_written = global_page_state(NR_WRITTEN);
230 __entry->background_thresh = background_thresh;
231 __entry->dirty_thresh = dirty_thresh;
232 __entry->dirty_limit = global_dirty_limit;
233 ),
234
235 TP_printk("dirty=%lu writeback=%lu unstable=%lu "
236 "bg_thresh=%lu thresh=%lu limit=%lu "
237 "dirtied=%lu written=%lu",
238 __entry->nr_dirty,
239 __entry->nr_writeback,
240 __entry->nr_unstable,
241 __entry->background_thresh,
242 __entry->dirty_thresh,
243 __entry->dirty_limit,
244 __entry->nr_dirtied,
245 __entry->nr_written
246 )
247);
248
249#define KBps(x) ((x) << (PAGE_SHIFT - 10))
250
251TRACE_EVENT(bdi_dirty_ratelimit,
252
253 TP_PROTO(struct backing_dev_info *bdi,
254 unsigned long dirty_rate,
255 unsigned long task_ratelimit),
256
257 TP_ARGS(bdi, dirty_rate, task_ratelimit),
258
259 TP_STRUCT__entry(
260 __array(char, bdi, 32)
261 __field(unsigned long, write_bw)
262 __field(unsigned long, avg_write_bw)
263 __field(unsigned long, dirty_rate)
264 __field(unsigned long, dirty_ratelimit)
265 __field(unsigned long, task_ratelimit)
266 __field(unsigned long, balanced_dirty_ratelimit)
267 ),
268
269 TP_fast_assign(
270 strlcpy(__entry->bdi, dev_name(bdi->dev), 32);
271 __entry->write_bw = KBps(bdi->write_bandwidth);
272 __entry->avg_write_bw = KBps(bdi->avg_write_bandwidth);
273 __entry->dirty_rate = KBps(dirty_rate);
274 __entry->dirty_ratelimit = KBps(bdi->dirty_ratelimit);
275 __entry->task_ratelimit = KBps(task_ratelimit);
276 __entry->balanced_dirty_ratelimit =
277 KBps(bdi->balanced_dirty_ratelimit);
278 ),
279
280 TP_printk("bdi %s: "
281 "write_bw=%lu awrite_bw=%lu dirty_rate=%lu "
282 "dirty_ratelimit=%lu task_ratelimit=%lu "
283 "balanced_dirty_ratelimit=%lu",
284 __entry->bdi,
285 __entry->write_bw, /* write bandwidth */
286 __entry->avg_write_bw, /* avg write bandwidth */
287 __entry->dirty_rate, /* bdi dirty rate */
288 __entry->dirty_ratelimit, /* base ratelimit */
289 __entry->task_ratelimit, /* ratelimit with position control */
290 __entry->balanced_dirty_ratelimit /* the balanced ratelimit */
291 )
292);
293
294TRACE_EVENT(balance_dirty_pages,
295
296 TP_PROTO(struct backing_dev_info *bdi,
297 unsigned long thresh,
298 unsigned long bg_thresh,
299 unsigned long dirty,
300 unsigned long bdi_thresh,
301 unsigned long bdi_dirty,
302 unsigned long dirty_ratelimit,
303 unsigned long task_ratelimit,
304 unsigned long dirtied,
305 unsigned long period,
306 long pause,
307 unsigned long start_time),
308
309 TP_ARGS(bdi, thresh, bg_thresh, dirty, bdi_thresh, bdi_dirty,
310 dirty_ratelimit, task_ratelimit,
311 dirtied, period, pause, start_time),
312
313 TP_STRUCT__entry(
314 __array( char, bdi, 32)
315 __field(unsigned long, limit)
316 __field(unsigned long, setpoint)
317 __field(unsigned long, dirty)
318 __field(unsigned long, bdi_setpoint)
319 __field(unsigned long, bdi_dirty)
320 __field(unsigned long, dirty_ratelimit)
321 __field(unsigned long, task_ratelimit)
322 __field(unsigned int, dirtied)
323 __field(unsigned int, dirtied_pause)
324 __field(unsigned long, paused)
325 __field( long, pause)
326 __field(unsigned long, period)
327 __field( long, think)
328 ),
329
330 TP_fast_assign(
331 unsigned long freerun = (thresh + bg_thresh) / 2;
332 strlcpy(__entry->bdi, dev_name(bdi->dev), 32);
333
334 __entry->limit = global_dirty_limit;
335 __entry->setpoint = (global_dirty_limit + freerun) / 2;
336 __entry->dirty = dirty;
337 __entry->bdi_setpoint = __entry->setpoint *
338 bdi_thresh / (thresh + 1);
339 __entry->bdi_dirty = bdi_dirty;
340 __entry->dirty_ratelimit = KBps(dirty_ratelimit);
341 __entry->task_ratelimit = KBps(task_ratelimit);
342 __entry->dirtied = dirtied;
343 __entry->dirtied_pause = current->nr_dirtied_pause;
344 __entry->think = current->dirty_paused_when == 0 ? 0 :
345 (long)(jiffies - current->dirty_paused_when) * 1000/HZ;
346 __entry->period = period * 1000 / HZ;
347 __entry->pause = pause * 1000 / HZ;
348 __entry->paused = (jiffies - start_time) * 1000 / HZ;
349 ),
350
351
352 TP_printk("bdi %s: "
353 "limit=%lu setpoint=%lu dirty=%lu "
354 "bdi_setpoint=%lu bdi_dirty=%lu "
355 "dirty_ratelimit=%lu task_ratelimit=%lu "
356 "dirtied=%u dirtied_pause=%u "
357 "paused=%lu pause=%ld period=%lu think=%ld",
358 __entry->bdi,
359 __entry->limit,
360 __entry->setpoint,
361 __entry->dirty,
362 __entry->bdi_setpoint,
363 __entry->bdi_dirty,
364 __entry->dirty_ratelimit,
365 __entry->task_ratelimit,
366 __entry->dirtied,
367 __entry->dirtied_pause,
368 __entry->paused, /* ms */
369 __entry->pause, /* ms */
370 __entry->period, /* ms */
371 __entry->think /* ms */
372 )
373);
374
375TRACE_EVENT(writeback_sb_inodes_requeue,
376
377 TP_PROTO(struct inode *inode),
378 TP_ARGS(inode),
379
380 TP_STRUCT__entry(
381 __array(char, name, 32)
382 __field(unsigned long, ino)
383 __field(unsigned long, state)
384 __field(unsigned long, dirtied_when)
385 ),
386
387 TP_fast_assign(
388 strncpy(__entry->name,
389 dev_name(inode_to_bdi(inode)->dev), 32);
390 __entry->ino = inode->i_ino;
391 __entry->state = inode->i_state;
392 __entry->dirtied_when = inode->dirtied_when;
393 ),
394
395 TP_printk("bdi %s: ino=%lu state=%s dirtied_when=%lu age=%lu",
396 __entry->name,
397 __entry->ino,
398 show_inode_state(__entry->state),
399 __entry->dirtied_when,
400 (jiffies - __entry->dirtied_when) / HZ
401 )
402);
403
404DECLARE_EVENT_CLASS(writeback_congest_waited_template,
405
406 TP_PROTO(unsigned int usec_timeout, unsigned int usec_delayed),
407
408 TP_ARGS(usec_timeout, usec_delayed),
409
410 TP_STRUCT__entry(
411 __field( unsigned int, usec_timeout )
412 __field( unsigned int, usec_delayed )
413 ),
414
415 TP_fast_assign(
416 __entry->usec_timeout = usec_timeout;
417 __entry->usec_delayed = usec_delayed;
418 ),
419
420 TP_printk("usec_timeout=%u usec_delayed=%u",
421 __entry->usec_timeout,
422 __entry->usec_delayed)
423);
424
425DEFINE_EVENT(writeback_congest_waited_template, writeback_congestion_wait,
426
427 TP_PROTO(unsigned int usec_timeout, unsigned int usec_delayed),
428
429 TP_ARGS(usec_timeout, usec_delayed)
430);
431
432DEFINE_EVENT(writeback_congest_waited_template, writeback_wait_iff_congested,
433
434 TP_PROTO(unsigned int usec_timeout, unsigned int usec_delayed),
435
436 TP_ARGS(usec_timeout, usec_delayed)
437);
438
439DECLARE_EVENT_CLASS(writeback_single_inode_template,
440
441 TP_PROTO(struct inode *inode,
442 struct writeback_control *wbc,
443 unsigned long nr_to_write
444 ),
445
446 TP_ARGS(inode, wbc, nr_to_write),
447
448 TP_STRUCT__entry(
449 __array(char, name, 32)
450 __field(unsigned long, ino)
451 __field(unsigned long, state)
452 __field(unsigned long, dirtied_when)
453 __field(unsigned long, writeback_index)
454 __field(long, nr_to_write)
455 __field(unsigned long, wrote)
456 ),
457
458 TP_fast_assign(
459 strncpy(__entry->name,
460 dev_name(inode_to_bdi(inode)->dev), 32);
461 __entry->ino = inode->i_ino;
462 __entry->state = inode->i_state;
463 __entry->dirtied_when = inode->dirtied_when;
464 __entry->writeback_index = inode->i_mapping->writeback_index;
465 __entry->nr_to_write = nr_to_write;
466 __entry->wrote = nr_to_write - wbc->nr_to_write;
467 ),
468
469 TP_printk("bdi %s: ino=%lu state=%s dirtied_when=%lu age=%lu "
470 "index=%lu to_write=%ld wrote=%lu",
471 __entry->name,
472 __entry->ino,
473 show_inode_state(__entry->state),
474 __entry->dirtied_when,
475 (jiffies - __entry->dirtied_when) / HZ,
476 __entry->writeback_index,
477 __entry->nr_to_write,
478 __entry->wrote
479 )
480);
481
482DEFINE_EVENT(writeback_single_inode_template, writeback_single_inode,
483 TP_PROTO(struct inode *inode,
484 struct writeback_control *wbc,
485 unsigned long nr_to_write),
486 TP_ARGS(inode, wbc, nr_to_write)
487);
488
489#endif /* _TRACE_WRITEBACK_H */
490
491/* This part must be outside protection */
492#include <trace/define_trace.h>