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