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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#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/tracepoint.h>
8#include <linux/backing-dev.h>
9#include <linux/writeback.h>
10
11#define show_inode_state(state) \
12 __print_flags(state, "|", \
13 {I_DIRTY_SYNC, "I_DIRTY_SYNC"}, \
14 {I_DIRTY_DATASYNC, "I_DIRTY_DATASYNC"}, \
15 {I_DIRTY_PAGES, "I_DIRTY_PAGES"}, \
16 {I_NEW, "I_NEW"}, \
17 {I_WILL_FREE, "I_WILL_FREE"}, \
18 {I_FREEING, "I_FREEING"}, \
19 {I_CLEAR, "I_CLEAR"}, \
20 {I_SYNC, "I_SYNC"}, \
21 {I_REFERENCED, "I_REFERENCED"} \
22 )
23
24#define WB_WORK_REASON \
25 {WB_REASON_BACKGROUND, "background"}, \
26 {WB_REASON_TRY_TO_FREE_PAGES, "try_to_free_pages"}, \
27 {WB_REASON_SYNC, "sync"}, \
28 {WB_REASON_PERIODIC, "periodic"}, \
29 {WB_REASON_LAPTOP_TIMER, "laptop_timer"}, \
30 {WB_REASON_FREE_MORE_MEM, "free_more_memory"}, \
31 {WB_REASON_FS_FREE_SPACE, "fs_free_space"}, \
32 {WB_REASON_FORKER_THREAD, "forker_thread"}
33
34struct wb_writeback_work;
35
36TRACE_EVENT(writeback_dirty_page,
37
38 TP_PROTO(struct page *page, struct address_space *mapping),
39
40 TP_ARGS(page, mapping),
41
42 TP_STRUCT__entry (
43 __array(char, name, 32)
44 __field(unsigned long, ino)
45 __field(pgoff_t, index)
46 ),
47
48 TP_fast_assign(
49 strncpy(__entry->name,
50 mapping ? dev_name(mapping->backing_dev_info->dev) : "(unknown)", 32);
51 __entry->ino = mapping ? mapping->host->i_ino : 0;
52 __entry->index = page->index;
53 ),
54
55 TP_printk("bdi %s: ino=%lu index=%lu",
56 __entry->name,
57 __entry->ino,
58 __entry->index
59 )
60);
61
62DECLARE_EVENT_CLASS(writeback_dirty_inode_template,
63
64 TP_PROTO(struct inode *inode, int flags),
65
66 TP_ARGS(inode, flags),
67
68 TP_STRUCT__entry (
69 __array(char, name, 32)
70 __field(unsigned long, ino)
71 __field(unsigned long, flags)
72 ),
73
74 TP_fast_assign(
75 struct backing_dev_info *bdi = inode->i_mapping->backing_dev_info;
76
77 /* may be called for files on pseudo FSes w/ unregistered bdi */
78 strncpy(__entry->name,
79 bdi->dev ? dev_name(bdi->dev) : "(unknown)", 32);
80 __entry->ino = inode->i_ino;
81 __entry->flags = flags;
82 ),
83
84 TP_printk("bdi %s: ino=%lu flags=%s",
85 __entry->name,
86 __entry->ino,
87 show_inode_state(__entry->flags)
88 )
89);
90
91DEFINE_EVENT(writeback_dirty_inode_template, writeback_dirty_inode_start,
92
93 TP_PROTO(struct inode *inode, int flags),
94
95 TP_ARGS(inode, flags)
96);
97
98DEFINE_EVENT(writeback_dirty_inode_template, writeback_dirty_inode,
99
100 TP_PROTO(struct inode *inode, int flags),
101
102 TP_ARGS(inode, flags)
103);
104
105DECLARE_EVENT_CLASS(writeback_write_inode_template,
106
107 TP_PROTO(struct inode *inode, struct writeback_control *wbc),
108
109 TP_ARGS(inode, wbc),
110
111 TP_STRUCT__entry (
112 __array(char, name, 32)
113 __field(unsigned long, ino)
114 __field(int, sync_mode)
115 ),
116
117 TP_fast_assign(
118 strncpy(__entry->name,
119 dev_name(inode->i_mapping->backing_dev_info->dev), 32);
120 __entry->ino = inode->i_ino;
121 __entry->sync_mode = wbc->sync_mode;
122 ),
123
124 TP_printk("bdi %s: ino=%lu sync_mode=%d",
125 __entry->name,
126 __entry->ino,
127 __entry->sync_mode
128 )
129);
130
131DEFINE_EVENT(writeback_write_inode_template, writeback_write_inode_start,
132
133 TP_PROTO(struct inode *inode, struct writeback_control *wbc),
134
135 TP_ARGS(inode, wbc)
136);
137
138DEFINE_EVENT(writeback_write_inode_template, writeback_write_inode,
139
140 TP_PROTO(struct inode *inode, struct writeback_control *wbc),
141
142 TP_ARGS(inode, wbc)
143);
144
145DECLARE_EVENT_CLASS(writeback_work_class,
146 TP_PROTO(struct backing_dev_info *bdi, struct wb_writeback_work *work),
147 TP_ARGS(bdi, work),
148 TP_STRUCT__entry(
149 __array(char, name, 32)
150 __field(long, nr_pages)
151 __field(dev_t, sb_dev)
152 __field(int, sync_mode)
153 __field(int, for_kupdate)
154 __field(int, range_cyclic)
155 __field(int, for_background)
156 __field(int, reason)
157 ),
158 TP_fast_assign(
159 struct device *dev = bdi->dev;
160 if (!dev)
161 dev = default_backing_dev_info.dev;
162 strncpy(__entry->name, dev_name(dev), 32);
163 __entry->nr_pages = work->nr_pages;
164 __entry->sb_dev = work->sb ? work->sb->s_dev : 0;
165 __entry->sync_mode = work->sync_mode;
166 __entry->for_kupdate = work->for_kupdate;
167 __entry->range_cyclic = work->range_cyclic;
168 __entry->for_background = work->for_background;
169 __entry->reason = work->reason;
170 ),
171 TP_printk("bdi %s: sb_dev %d:%d nr_pages=%ld sync_mode=%d "
172 "kupdate=%d range_cyclic=%d background=%d reason=%s",
173 __entry->name,
174 MAJOR(__entry->sb_dev), MINOR(__entry->sb_dev),
175 __entry->nr_pages,
176 __entry->sync_mode,
177 __entry->for_kupdate,
178 __entry->range_cyclic,
179 __entry->for_background,
180 __print_symbolic(__entry->reason, WB_WORK_REASON)
181 )
182);
183#define DEFINE_WRITEBACK_WORK_EVENT(name) \
184DEFINE_EVENT(writeback_work_class, name, \
185 TP_PROTO(struct backing_dev_info *bdi, struct wb_writeback_work *work), \
186 TP_ARGS(bdi, work))
187DEFINE_WRITEBACK_WORK_EVENT(writeback_queue);
188DEFINE_WRITEBACK_WORK_EVENT(writeback_exec);
189DEFINE_WRITEBACK_WORK_EVENT(writeback_start);
190DEFINE_WRITEBACK_WORK_EVENT(writeback_written);
191DEFINE_WRITEBACK_WORK_EVENT(writeback_wait);
192
193TRACE_EVENT(writeback_pages_written,
194 TP_PROTO(long pages_written),
195 TP_ARGS(pages_written),
196 TP_STRUCT__entry(
197 __field(long, pages)
198 ),
199 TP_fast_assign(
200 __entry->pages = pages_written;
201 ),
202 TP_printk("%ld", __entry->pages)
203);
204
205DECLARE_EVENT_CLASS(writeback_class,
206 TP_PROTO(struct backing_dev_info *bdi),
207 TP_ARGS(bdi),
208 TP_STRUCT__entry(
209 __array(char, name, 32)
210 ),
211 TP_fast_assign(
212 strncpy(__entry->name, dev_name(bdi->dev), 32);
213 ),
214 TP_printk("bdi %s",
215 __entry->name
216 )
217);
218#define DEFINE_WRITEBACK_EVENT(name) \
219DEFINE_EVENT(writeback_class, name, \
220 TP_PROTO(struct backing_dev_info *bdi), \
221 TP_ARGS(bdi))
222
223DEFINE_WRITEBACK_EVENT(writeback_nowork);
224DEFINE_WRITEBACK_EVENT(writeback_wake_background);
225DEFINE_WRITEBACK_EVENT(writeback_bdi_register);
226DEFINE_WRITEBACK_EVENT(writeback_bdi_unregister);
227
228DECLARE_EVENT_CLASS(wbc_class,
229 TP_PROTO(struct writeback_control *wbc, struct backing_dev_info *bdi),
230 TP_ARGS(wbc, bdi),
231 TP_STRUCT__entry(
232 __array(char, name, 32)
233 __field(long, nr_to_write)
234 __field(long, pages_skipped)
235 __field(int, sync_mode)
236 __field(int, for_kupdate)
237 __field(int, for_background)
238 __field(int, for_reclaim)
239 __field(int, range_cyclic)
240 __field(long, range_start)
241 __field(long, range_end)
242 ),
243
244 TP_fast_assign(
245 strncpy(__entry->name, dev_name(bdi->dev), 32);
246 __entry->nr_to_write = wbc->nr_to_write;
247 __entry->pages_skipped = wbc->pages_skipped;
248 __entry->sync_mode = wbc->sync_mode;
249 __entry->for_kupdate = wbc->for_kupdate;
250 __entry->for_background = wbc->for_background;
251 __entry->for_reclaim = wbc->for_reclaim;
252 __entry->range_cyclic = wbc->range_cyclic;
253 __entry->range_start = (long)wbc->range_start;
254 __entry->range_end = (long)wbc->range_end;
255 ),
256
257 TP_printk("bdi %s: towrt=%ld skip=%ld mode=%d kupd=%d "
258 "bgrd=%d reclm=%d cyclic=%d "
259 "start=0x%lx end=0x%lx",
260 __entry->name,
261 __entry->nr_to_write,
262 __entry->pages_skipped,
263 __entry->sync_mode,
264 __entry->for_kupdate,
265 __entry->for_background,
266 __entry->for_reclaim,
267 __entry->range_cyclic,
268 __entry->range_start,
269 __entry->range_end)
270)
271
272#define DEFINE_WBC_EVENT(name) \
273DEFINE_EVENT(wbc_class, name, \
274 TP_PROTO(struct writeback_control *wbc, struct backing_dev_info *bdi), \
275 TP_ARGS(wbc, bdi))
276DEFINE_WBC_EVENT(wbc_writepage);
277
278TRACE_EVENT(writeback_queue_io,
279 TP_PROTO(struct bdi_writeback *wb,
280 struct wb_writeback_work *work,
281 int moved),
282 TP_ARGS(wb, work, moved),
283 TP_STRUCT__entry(
284 __array(char, name, 32)
285 __field(unsigned long, older)
286 __field(long, age)
287 __field(int, moved)
288 __field(int, reason)
289 ),
290 TP_fast_assign(
291 unsigned long *older_than_this = work->older_than_this;
292 strncpy(__entry->name, dev_name(wb->bdi->dev), 32);
293 __entry->older = older_than_this ? *older_than_this : 0;
294 __entry->age = older_than_this ?
295 (jiffies - *older_than_this) * 1000 / HZ : -1;
296 __entry->moved = moved;
297 __entry->reason = work->reason;
298 ),
299 TP_printk("bdi %s: older=%lu age=%ld enqueue=%d reason=%s",
300 __entry->name,
301 __entry->older, /* older_than_this in jiffies */
302 __entry->age, /* older_than_this in relative milliseconds */
303 __entry->moved,
304 __print_symbolic(__entry->reason, WB_WORK_REASON)
305 )
306);
307
308TRACE_EVENT(global_dirty_state,
309
310 TP_PROTO(unsigned long background_thresh,
311 unsigned long dirty_thresh
312 ),
313
314 TP_ARGS(background_thresh,
315 dirty_thresh
316 ),
317
318 TP_STRUCT__entry(
319 __field(unsigned long, nr_dirty)
320 __field(unsigned long, nr_writeback)
321 __field(unsigned long, nr_unstable)
322 __field(unsigned long, background_thresh)
323 __field(unsigned long, dirty_thresh)
324 __field(unsigned long, dirty_limit)
325 __field(unsigned long, nr_dirtied)
326 __field(unsigned long, nr_written)
327 ),
328
329 TP_fast_assign(
330 __entry->nr_dirty = global_page_state(NR_FILE_DIRTY);
331 __entry->nr_writeback = global_page_state(NR_WRITEBACK);
332 __entry->nr_unstable = global_page_state(NR_UNSTABLE_NFS);
333 __entry->nr_dirtied = global_page_state(NR_DIRTIED);
334 __entry->nr_written = global_page_state(NR_WRITTEN);
335 __entry->background_thresh = background_thresh;
336 __entry->dirty_thresh = dirty_thresh;
337 __entry->dirty_limit = global_dirty_limit;
338 ),
339
340 TP_printk("dirty=%lu writeback=%lu unstable=%lu "
341 "bg_thresh=%lu thresh=%lu limit=%lu "
342 "dirtied=%lu written=%lu",
343 __entry->nr_dirty,
344 __entry->nr_writeback,
345 __entry->nr_unstable,
346 __entry->background_thresh,
347 __entry->dirty_thresh,
348 __entry->dirty_limit,
349 __entry->nr_dirtied,
350 __entry->nr_written
351 )
352);
353
354#define KBps(x) ((x) << (PAGE_SHIFT - 10))
355
356TRACE_EVENT(bdi_dirty_ratelimit,
357
358 TP_PROTO(struct backing_dev_info *bdi,
359 unsigned long dirty_rate,
360 unsigned long task_ratelimit),
361
362 TP_ARGS(bdi, dirty_rate, task_ratelimit),
363
364 TP_STRUCT__entry(
365 __array(char, bdi, 32)
366 __field(unsigned long, write_bw)
367 __field(unsigned long, avg_write_bw)
368 __field(unsigned long, dirty_rate)
369 __field(unsigned long, dirty_ratelimit)
370 __field(unsigned long, task_ratelimit)
371 __field(unsigned long, balanced_dirty_ratelimit)
372 ),
373
374 TP_fast_assign(
375 strlcpy(__entry->bdi, dev_name(bdi->dev), 32);
376 __entry->write_bw = KBps(bdi->write_bandwidth);
377 __entry->avg_write_bw = KBps(bdi->avg_write_bandwidth);
378 __entry->dirty_rate = KBps(dirty_rate);
379 __entry->dirty_ratelimit = KBps(bdi->dirty_ratelimit);
380 __entry->task_ratelimit = KBps(task_ratelimit);
381 __entry->balanced_dirty_ratelimit =
382 KBps(bdi->balanced_dirty_ratelimit);
383 ),
384
385 TP_printk("bdi %s: "
386 "write_bw=%lu awrite_bw=%lu dirty_rate=%lu "
387 "dirty_ratelimit=%lu task_ratelimit=%lu "
388 "balanced_dirty_ratelimit=%lu",
389 __entry->bdi,
390 __entry->write_bw, /* write bandwidth */
391 __entry->avg_write_bw, /* avg write bandwidth */
392 __entry->dirty_rate, /* bdi dirty rate */
393 __entry->dirty_ratelimit, /* base ratelimit */
394 __entry->task_ratelimit, /* ratelimit with position control */
395 __entry->balanced_dirty_ratelimit /* the balanced ratelimit */
396 )
397);
398
399TRACE_EVENT(balance_dirty_pages,
400
401 TP_PROTO(struct backing_dev_info *bdi,
402 unsigned long thresh,
403 unsigned long bg_thresh,
404 unsigned long dirty,
405 unsigned long bdi_thresh,
406 unsigned long bdi_dirty,
407 unsigned long dirty_ratelimit,
408 unsigned long task_ratelimit,
409 unsigned long dirtied,
410 unsigned long period,
411 long pause,
412 unsigned long start_time),
413
414 TP_ARGS(bdi, thresh, bg_thresh, dirty, bdi_thresh, bdi_dirty,
415 dirty_ratelimit, task_ratelimit,
416 dirtied, period, pause, start_time),
417
418 TP_STRUCT__entry(
419 __array( char, bdi, 32)
420 __field(unsigned long, limit)
421 __field(unsigned long, setpoint)
422 __field(unsigned long, dirty)
423 __field(unsigned long, bdi_setpoint)
424 __field(unsigned long, bdi_dirty)
425 __field(unsigned long, dirty_ratelimit)
426 __field(unsigned long, task_ratelimit)
427 __field(unsigned int, dirtied)
428 __field(unsigned int, dirtied_pause)
429 __field(unsigned long, paused)
430 __field( long, pause)
431 __field(unsigned long, period)
432 __field( long, think)
433 ),
434
435 TP_fast_assign(
436 unsigned long freerun = (thresh + bg_thresh) / 2;
437 strlcpy(__entry->bdi, dev_name(bdi->dev), 32);
438
439 __entry->limit = global_dirty_limit;
440 __entry->setpoint = (global_dirty_limit + freerun) / 2;
441 __entry->dirty = dirty;
442 __entry->bdi_setpoint = __entry->setpoint *
443 bdi_thresh / (thresh + 1);
444 __entry->bdi_dirty = bdi_dirty;
445 __entry->dirty_ratelimit = KBps(dirty_ratelimit);
446 __entry->task_ratelimit = KBps(task_ratelimit);
447 __entry->dirtied = dirtied;
448 __entry->dirtied_pause = current->nr_dirtied_pause;
449 __entry->think = current->dirty_paused_when == 0 ? 0 :
450 (long)(jiffies - current->dirty_paused_when) * 1000/HZ;
451 __entry->period = period * 1000 / HZ;
452 __entry->pause = pause * 1000 / HZ;
453 __entry->paused = (jiffies - start_time) * 1000 / HZ;
454 ),
455
456
457 TP_printk("bdi %s: "
458 "limit=%lu setpoint=%lu dirty=%lu "
459 "bdi_setpoint=%lu bdi_dirty=%lu "
460 "dirty_ratelimit=%lu task_ratelimit=%lu "
461 "dirtied=%u dirtied_pause=%u "
462 "paused=%lu pause=%ld period=%lu think=%ld",
463 __entry->bdi,
464 __entry->limit,
465 __entry->setpoint,
466 __entry->dirty,
467 __entry->bdi_setpoint,
468 __entry->bdi_dirty,
469 __entry->dirty_ratelimit,
470 __entry->task_ratelimit,
471 __entry->dirtied,
472 __entry->dirtied_pause,
473 __entry->paused, /* ms */
474 __entry->pause, /* ms */
475 __entry->period, /* ms */
476 __entry->think /* ms */
477 )
478);
479
480TRACE_EVENT(writeback_sb_inodes_requeue,
481
482 TP_PROTO(struct inode *inode),
483 TP_ARGS(inode),
484
485 TP_STRUCT__entry(
486 __array(char, name, 32)
487 __field(unsigned long, ino)
488 __field(unsigned long, state)
489 __field(unsigned long, dirtied_when)
490 ),
491
492 TP_fast_assign(
493 strncpy(__entry->name,
494 dev_name(inode_to_bdi(inode)->dev), 32);
495 __entry->ino = inode->i_ino;
496 __entry->state = inode->i_state;
497 __entry->dirtied_when = inode->dirtied_when;
498 ),
499
500 TP_printk("bdi %s: ino=%lu state=%s dirtied_when=%lu age=%lu",
501 __entry->name,
502 __entry->ino,
503 show_inode_state(__entry->state),
504 __entry->dirtied_when,
505 (jiffies - __entry->dirtied_when) / HZ
506 )
507);
508
509DECLARE_EVENT_CLASS(writeback_congest_waited_template,
510
511 TP_PROTO(unsigned int usec_timeout, unsigned int usec_delayed),
512
513 TP_ARGS(usec_timeout, usec_delayed),
514
515 TP_STRUCT__entry(
516 __field( unsigned int, usec_timeout )
517 __field( unsigned int, usec_delayed )
518 ),
519
520 TP_fast_assign(
521 __entry->usec_timeout = usec_timeout;
522 __entry->usec_delayed = usec_delayed;
523 ),
524
525 TP_printk("usec_timeout=%u usec_delayed=%u",
526 __entry->usec_timeout,
527 __entry->usec_delayed)
528);
529
530DEFINE_EVENT(writeback_congest_waited_template, writeback_congestion_wait,
531
532 TP_PROTO(unsigned int usec_timeout, unsigned int usec_delayed),
533
534 TP_ARGS(usec_timeout, usec_delayed)
535);
536
537DEFINE_EVENT(writeback_congest_waited_template, writeback_wait_iff_congested,
538
539 TP_PROTO(unsigned int usec_timeout, unsigned int usec_delayed),
540
541 TP_ARGS(usec_timeout, usec_delayed)
542);
543
544DECLARE_EVENT_CLASS(writeback_single_inode_template,
545
546 TP_PROTO(struct inode *inode,
547 struct writeback_control *wbc,
548 unsigned long nr_to_write
549 ),
550
551 TP_ARGS(inode, wbc, nr_to_write),
552
553 TP_STRUCT__entry(
554 __array(char, name, 32)
555 __field(unsigned long, ino)
556 __field(unsigned long, state)
557 __field(unsigned long, dirtied_when)
558 __field(unsigned long, writeback_index)
559 __field(long, nr_to_write)
560 __field(unsigned long, wrote)
561 ),
562
563 TP_fast_assign(
564 strncpy(__entry->name,
565 dev_name(inode_to_bdi(inode)->dev), 32);
566 __entry->ino = inode->i_ino;
567 __entry->state = inode->i_state;
568 __entry->dirtied_when = inode->dirtied_when;
569 __entry->writeback_index = inode->i_mapping->writeback_index;
570 __entry->nr_to_write = nr_to_write;
571 __entry->wrote = nr_to_write - wbc->nr_to_write;
572 ),
573
574 TP_printk("bdi %s: ino=%lu state=%s dirtied_when=%lu age=%lu "
575 "index=%lu to_write=%ld wrote=%lu",
576 __entry->name,
577 __entry->ino,
578 show_inode_state(__entry->state),
579 __entry->dirtied_when,
580 (jiffies - __entry->dirtied_when) / HZ,
581 __entry->writeback_index,
582 __entry->nr_to_write,
583 __entry->wrote
584 )
585);
586
587DEFINE_EVENT(writeback_single_inode_template, writeback_single_inode_start,
588 TP_PROTO(struct inode *inode,
589 struct writeback_control *wbc,
590 unsigned long nr_to_write),
591 TP_ARGS(inode, wbc, nr_to_write)
592);
593
594DEFINE_EVENT(writeback_single_inode_template, writeback_single_inode,
595 TP_PROTO(struct inode *inode,
596 struct writeback_control *wbc,
597 unsigned long nr_to_write),
598 TP_ARGS(inode, wbc, nr_to_write)
599);
600
601#endif /* _TRACE_WRITEBACK_H */
602
603/* This part must be outside protection */
604#include <trace/define_trace.h>