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