1 /* SPDX-License-Identifier: GPL-2.0 */
3 #define TRACE_SYSTEM writeback
5 #if !defined(_TRACE_WRITEBACK_H) || defined(TRACE_HEADER_MULTI_READ)
6 #define _TRACE_WRITEBACK_H
8 #include <linux/tracepoint.h>
9 #include <linux/backing-dev.h>
10 #include <linux/writeback.h>
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"}, \
18 {I_WILL_FREE, "I_WILL_FREE"}, \
19 {I_FREEING, "I_FREEING"}, \
20 {I_CLEAR, "I_CLEAR"}, \
22 {I_DIRTY_TIME, "I_DIRTY_TIME"}, \
23 {I_REFERENCED, "I_REFERENCED"} \
26 /* enums need to be exported to user space */
29 #define EM(a,b) TRACE_DEFINE_ENUM(a);
30 #define EMe(a,b) TRACE_DEFINE_ENUM(a);
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")
45 * Now redefine the EM() and EMe() macros to map the enums to the strings
46 * that will be printed in the output.
50 #define EM(a,b) { a, b },
51 #define EMe(a,b) { a, b }
53 struct wb_writeback_work;
55 DECLARE_EVENT_CLASS(writeback_folio_template,
57 TP_PROTO(struct folio *folio, struct address_space *mapping),
59 TP_ARGS(folio, mapping),
62 __array(char, name, 32)
64 __field(pgoff_t, index)
68 strscpy_pad(__entry->name,
69 bdi_dev_name(mapping ? inode_to_bdi(mapping->host) :
71 __entry->ino = mapping ? mapping->host->i_ino : 0;
72 __entry->index = folio->index;
75 TP_printk("bdi %s: ino=%lu index=%lu",
77 (unsigned long)__entry->ino,
82 DEFINE_EVENT(writeback_folio_template, writeback_dirty_folio,
84 TP_PROTO(struct folio *folio, struct address_space *mapping),
86 TP_ARGS(folio, mapping)
89 DEFINE_EVENT(writeback_folio_template, folio_wait_writeback,
91 TP_PROTO(struct folio *folio, struct address_space *mapping),
93 TP_ARGS(folio, mapping)
96 DECLARE_EVENT_CLASS(writeback_dirty_inode_template,
98 TP_PROTO(struct inode *inode, int flags),
100 TP_ARGS(inode, flags),
103 __array(char, name, 32)
105 __field(unsigned long, state)
106 __field(unsigned long, flags)
110 struct backing_dev_info *bdi = inode_to_bdi(inode);
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;
119 TP_printk("bdi %s: ino=%lu state=%s flags=%s",
121 (unsigned long)__entry->ino,
122 show_inode_state(__entry->state),
123 show_inode_state(__entry->flags)
127 DEFINE_EVENT(writeback_dirty_inode_template, writeback_mark_inode_dirty,
129 TP_PROTO(struct inode *inode, int flags),
131 TP_ARGS(inode, flags)
134 DEFINE_EVENT(writeback_dirty_inode_template, writeback_dirty_inode_start,
136 TP_PROTO(struct inode *inode, int flags),
138 TP_ARGS(inode, flags)
141 DEFINE_EVENT(writeback_dirty_inode_template, writeback_dirty_inode,
143 TP_PROTO(struct inode *inode, int flags),
145 TP_ARGS(inode, flags)
148 #ifdef CREATE_TRACE_POINTS
149 #ifdef CONFIG_CGROUP_WRITEBACK
151 static inline ino_t __trace_wb_assign_cgroup(struct bdi_writeback *wb)
153 return cgroup_ino(wb->memcg_css->cgroup);
156 static inline ino_t __trace_wbc_assign_cgroup(struct writeback_control *wbc)
159 return __trace_wb_assign_cgroup(wbc->wb);
163 #else /* CONFIG_CGROUP_WRITEBACK */
165 static inline ino_t __trace_wb_assign_cgroup(struct bdi_writeback *wb)
170 static inline ino_t __trace_wbc_assign_cgroup(struct writeback_control *wbc)
175 #endif /* CONFIG_CGROUP_WRITEBACK */
176 #endif /* CREATE_TRACE_POINTS */
178 #ifdef CONFIG_CGROUP_WRITEBACK
179 TRACE_EVENT(inode_foreign_history,
181 TP_PROTO(struct inode *inode, struct writeback_control *wbc,
182 unsigned int history),
184 TP_ARGS(inode, wbc, history),
187 __array(char, name, 32)
189 __field(ino_t, cgroup_ino)
190 __field(unsigned int, history)
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;
200 TP_printk("bdi %s: ino=%lu cgroup_ino=%lu history=0x%x",
202 (unsigned long)__entry->ino,
203 (unsigned long)__entry->cgroup_ino,
208 TRACE_EVENT(inode_switch_wbs,
210 TP_PROTO(struct inode *inode, struct bdi_writeback *old_wb,
211 struct bdi_writeback *new_wb),
213 TP_ARGS(inode, old_wb, new_wb),
216 __array(char, name, 32)
218 __field(ino_t, old_cgroup_ino)
219 __field(ino_t, new_cgroup_ino)
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);
229 TP_printk("bdi %s: ino=%lu old_cgroup_ino=%lu new_cgroup_ino=%lu",
231 (unsigned long)__entry->ino,
232 (unsigned long)__entry->old_cgroup_ino,
233 (unsigned long)__entry->new_cgroup_ino
237 TRACE_EVENT(track_foreign_dirty,
239 TP_PROTO(struct folio *folio, struct bdi_writeback *wb),
244 __array(char, name, 32)
247 __field(unsigned int, memcg_id)
248 __field(ino_t, cgroup_ino)
249 __field(ino_t, page_cgroup_ino)
253 struct address_space *mapping = folio_mapping(folio);
254 struct inode *inode = mapping ? mapping->host : NULL;
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);
264 TP_printk("bdi %s[%llu]: ino=%lu memcg_id=%u cgroup_ino=%lu page_cgroup_ino=%lu",
267 (unsigned long)__entry->ino,
269 (unsigned long)__entry->cgroup_ino,
270 (unsigned long)__entry->page_cgroup_ino
274 TRACE_EVENT(flush_foreign,
276 TP_PROTO(struct bdi_writeback *wb, unsigned int frn_bdi_id,
277 unsigned int frn_memcg_id),
279 TP_ARGS(wb, frn_bdi_id, frn_memcg_id),
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)
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;
295 TP_printk("bdi %s: cgroup_ino=%lu frn_bdi_id=%u frn_memcg_id=%u",
297 (unsigned long)__entry->cgroup_ino,
299 __entry->frn_memcg_id
304 DECLARE_EVENT_CLASS(writeback_write_inode_template,
306 TP_PROTO(struct inode *inode, struct writeback_control *wbc),
311 __array(char, name, 32)
313 __field(int, sync_mode)
314 __field(ino_t, cgroup_ino)
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);
325 TP_printk("bdi %s: ino=%lu sync_mode=%d cgroup_ino=%lu",
327 (unsigned long)__entry->ino,
329 (unsigned long)__entry->cgroup_ino
333 DEFINE_EVENT(writeback_write_inode_template, writeback_write_inode_start,
335 TP_PROTO(struct inode *inode, struct writeback_control *wbc),
340 DEFINE_EVENT(writeback_write_inode_template, writeback_write_inode,
342 TP_PROTO(struct inode *inode, struct writeback_control *wbc),
347 DECLARE_EVENT_CLASS(writeback_work_class,
348 TP_PROTO(struct bdi_writeback *wb, struct wb_writeback_work *work),
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)
359 __field(ino_t, cgroup_ino)
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);
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",
375 MAJOR(__entry->sb_dev), MINOR(__entry->sb_dev),
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
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), \
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);
395 TRACE_EVENT(writeback_pages_written,
396 TP_PROTO(long pages_written),
397 TP_ARGS(pages_written),
402 __entry->pages = pages_written;
404 TP_printk("%ld", __entry->pages)
407 DECLARE_EVENT_CLASS(writeback_class,
408 TP_PROTO(struct bdi_writeback *wb),
411 __array(char, name, 32)
412 __field(ino_t, cgroup_ino)
415 strscpy_pad(__entry->name, bdi_dev_name(wb->bdi), 32);
416 __entry->cgroup_ino = __trace_wb_assign_cgroup(wb);
418 TP_printk("bdi %s: cgroup_ino=%lu",
420 (unsigned long)__entry->cgroup_ino
423 #define DEFINE_WRITEBACK_EVENT(name) \
424 DEFINE_EVENT(writeback_class, name, \
425 TP_PROTO(struct bdi_writeback *wb), \
428 DEFINE_WRITEBACK_EVENT(writeback_wake_background);
430 TRACE_EVENT(writeback_bdi_register,
431 TP_PROTO(struct backing_dev_info *bdi),
434 __array(char, name, 32)
437 strscpy_pad(__entry->name, bdi_dev_name(bdi), 32);
444 DECLARE_EVENT_CLASS(wbc_class,
445 TP_PROTO(struct writeback_control *wbc, struct backing_dev_info *bdi),
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)
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);
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",
479 __entry->nr_to_write,
480 __entry->pages_skipped,
482 __entry->for_kupdate,
483 __entry->for_background,
484 __entry->for_reclaim,
485 __entry->range_cyclic,
486 __entry->range_start,
488 (unsigned long)__entry->cgroup_ino
492 #define DEFINE_WBC_EVENT(name) \
493 DEFINE_EVENT(wbc_class, name, \
494 TP_PROTO(struct writeback_control *wbc, struct backing_dev_info *bdi), \
496 DEFINE_WBC_EVENT(wbc_writepage);
498 TRACE_EVENT(writeback_queue_io,
499 TP_PROTO(struct bdi_writeback *wb,
500 struct wb_writeback_work *work,
501 unsigned long dirtied_before,
503 TP_ARGS(wb, work, dirtied_before, moved),
505 __array(char, name, 32)
506 __field(unsigned long, older)
510 __field(ino_t, cgroup_ino)
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);
520 TP_printk("bdi %s: older=%lu age=%ld enqueue=%d reason=%s cgroup_ino=%lu",
522 __entry->older, /* dirtied_before in jiffies */
523 __entry->age, /* dirtied_before in relative milliseconds */
525 __print_symbolic(__entry->reason, WB_WORK_REASON),
526 (unsigned long)__entry->cgroup_ino
530 TRACE_EVENT(global_dirty_state,
532 TP_PROTO(unsigned long background_thresh,
533 unsigned long dirty_thresh
536 TP_ARGS(background_thresh,
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)
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;
560 TP_printk("dirty=%lu writeback=%lu "
561 "bg_thresh=%lu thresh=%lu limit=%lu "
562 "dirtied=%lu written=%lu",
564 __entry->nr_writeback,
565 __entry->background_thresh,
566 __entry->dirty_thresh,
567 __entry->dirty_limit,
573 #define KBps(x) ((x) << (PAGE_SHIFT - 10))
575 TRACE_EVENT(bdi_dirty_ratelimit,
577 TP_PROTO(struct bdi_writeback *wb,
578 unsigned long dirty_rate,
579 unsigned long task_ratelimit),
581 TP_ARGS(wb, dirty_rate, task_ratelimit),
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)
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);
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",
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
621 TRACE_EVENT(balance_dirty_pages,
623 TP_PROTO(struct bdi_writeback *wb,
624 unsigned long thresh,
625 unsigned long bg_thresh,
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,
634 unsigned long start_time),
636 TP_ARGS(wb, thresh, bg_thresh, dirty, bdi_thresh, bdi_dirty,
637 dirty_ratelimit, task_ratelimit,
638 dirtied, period, pause, start_time),
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)
659 unsigned long freerun = (thresh + bg_thresh) / 2;
660 strscpy_pad(__entry->bdi, bdi_dev_name(wb->bdi), 32);
662 __entry->limit = global_wb_domain.dirty_limit;
663 __entry->setpoint = (global_wb_domain.dirty_limit +
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);
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",
692 __entry->bdi_setpoint,
694 __entry->dirty_ratelimit,
695 __entry->task_ratelimit,
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
706 TRACE_EVENT(writeback_sb_inodes_requeue,
708 TP_PROTO(struct inode *inode),
712 __array(char, name, 32)
714 __field(unsigned long, state)
715 __field(unsigned long, dirtied_when)
716 __field(ino_t, cgroup_ino)
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));
728 TP_printk("bdi %s: ino=%lu state=%s dirtied_when=%lu age=%lu cgroup_ino=%lu",
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
738 DECLARE_EVENT_CLASS(writeback_congest_waited_template,
740 TP_PROTO(unsigned int usec_timeout, unsigned int usec_delayed),
742 TP_ARGS(usec_timeout, usec_delayed),
745 __field( unsigned int, usec_timeout )
746 __field( unsigned int, usec_delayed )
750 __entry->usec_timeout = usec_timeout;
751 __entry->usec_delayed = usec_delayed;
754 TP_printk("usec_timeout=%u usec_delayed=%u",
755 __entry->usec_timeout,
756 __entry->usec_delayed)
759 DEFINE_EVENT(writeback_congest_waited_template, writeback_congestion_wait,
761 TP_PROTO(unsigned int usec_timeout, unsigned int usec_delayed),
763 TP_ARGS(usec_timeout, usec_delayed)
766 DECLARE_EVENT_CLASS(writeback_single_inode_template,
768 TP_PROTO(struct inode *inode,
769 struct writeback_control *wbc,
770 unsigned long nr_to_write
773 TP_ARGS(inode, wbc, nr_to_write),
776 __array(char, name, 32)
778 __field(unsigned long, state)
779 __field(unsigned long, dirtied_when)
780 __field(unsigned long, writeback_index)
781 __field(long, nr_to_write)
782 __field(unsigned long, wrote)
783 __field(ino_t, cgroup_ino)
787 strscpy_pad(__entry->name,
788 bdi_dev_name(inode_to_bdi(inode)), 32);
789 __entry->ino = inode->i_ino;
790 __entry->state = inode->i_state;
791 __entry->dirtied_when = inode->dirtied_when;
792 __entry->writeback_index = inode->i_mapping->writeback_index;
793 __entry->nr_to_write = nr_to_write;
794 __entry->wrote = nr_to_write - wbc->nr_to_write;
795 __entry->cgroup_ino = __trace_wbc_assign_cgroup(wbc);
798 TP_printk("bdi %s: ino=%lu state=%s dirtied_when=%lu age=%lu "
799 "index=%lu to_write=%ld wrote=%lu cgroup_ino=%lu",
801 (unsigned long)__entry->ino,
802 show_inode_state(__entry->state),
803 __entry->dirtied_when,
804 (jiffies - __entry->dirtied_when) / HZ,
805 __entry->writeback_index,
806 __entry->nr_to_write,
808 (unsigned long)__entry->cgroup_ino
812 DEFINE_EVENT(writeback_single_inode_template, writeback_single_inode_start,
813 TP_PROTO(struct inode *inode,
814 struct writeback_control *wbc,
815 unsigned long nr_to_write),
816 TP_ARGS(inode, wbc, nr_to_write)
819 DEFINE_EVENT(writeback_single_inode_template, writeback_single_inode,
820 TP_PROTO(struct inode *inode,
821 struct writeback_control *wbc,
822 unsigned long nr_to_write),
823 TP_ARGS(inode, wbc, nr_to_write)
826 DECLARE_EVENT_CLASS(writeback_inode_template,
827 TP_PROTO(struct inode *inode),
832 __field( dev_t, dev )
833 __field( ino_t, ino )
834 __field(unsigned long, state )
835 __field( __u16, mode )
836 __field(unsigned long, dirtied_when )
840 __entry->dev = inode->i_sb->s_dev;
841 __entry->ino = inode->i_ino;
842 __entry->state = inode->i_state;
843 __entry->mode = inode->i_mode;
844 __entry->dirtied_when = inode->dirtied_when;
847 TP_printk("dev %d,%d ino %lu dirtied %lu state %s mode 0%o",
848 MAJOR(__entry->dev), MINOR(__entry->dev),
849 (unsigned long)__entry->ino, __entry->dirtied_when,
850 show_inode_state(__entry->state), __entry->mode)
853 DEFINE_EVENT(writeback_inode_template, writeback_lazytime,
854 TP_PROTO(struct inode *inode),
859 DEFINE_EVENT(writeback_inode_template, writeback_lazytime_iput,
860 TP_PROTO(struct inode *inode),
865 DEFINE_EVENT(writeback_inode_template, writeback_dirty_inode_enqueue,
867 TP_PROTO(struct inode *inode),
873 * Inode writeback list tracking.
876 DEFINE_EVENT(writeback_inode_template, sb_mark_inode_writeback,
877 TP_PROTO(struct inode *inode),
881 DEFINE_EVENT(writeback_inode_template, sb_clear_inode_writeback,
882 TP_PROTO(struct inode *inode),
886 #endif /* _TRACE_WRITEBACK_H */
888 /* This part must be outside protection */
889 #include <trace/define_trace.h>