2 #define TRACE_SYSTEM writeback
4 #if !defined(_TRACE_WRITEBACK_H) || defined(TRACE_HEADER_MULTI_READ)
5 #define _TRACE_WRITEBACK_H
7 #include <linux/tracepoint.h>
8 #include <linux/backing-dev.h>
9 #include <linux/writeback.h>
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"}, \
17 {I_WILL_FREE, "I_WILL_FREE"}, \
18 {I_FREEING, "I_FREEING"}, \
19 {I_CLEAR, "I_CLEAR"}, \
21 {I_REFERENCED, "I_REFERENCED"} \
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"}
34 struct wb_writeback_work
;
36 TRACE_EVENT(writeback_dirty_page
,
38 TP_PROTO(struct page
*page
, struct address_space
*mapping
),
40 TP_ARGS(page
, mapping
),
43 __array(char, name
, 32)
44 __field(unsigned long, ino
)
45 __field(pgoff_t
, index
)
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
;
55 TP_printk("bdi %s: ino=%lu index=%lu",
62 DECLARE_EVENT_CLASS(writeback_dirty_inode_template
,
64 TP_PROTO(struct inode
*inode
, int flags
),
66 TP_ARGS(inode
, flags
),
69 __array(char, name
, 32)
70 __field(unsigned long, ino
)
71 __field(unsigned long, flags
)
75 struct backing_dev_info
*bdi
= inode
->i_mapping
->backing_dev_info
;
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
;
84 TP_printk("bdi %s: ino=%lu flags=%s",
87 show_inode_state(__entry
->flags
)
91 DEFINE_EVENT(writeback_dirty_inode_template
, writeback_dirty_inode_start
,
93 TP_PROTO(struct inode
*inode
, int flags
),
98 DEFINE_EVENT(writeback_dirty_inode_template
, writeback_dirty_inode
,
100 TP_PROTO(struct inode
*inode
, int flags
),
102 TP_ARGS(inode
, flags
)
105 DECLARE_EVENT_CLASS(writeback_write_inode_template
,
107 TP_PROTO(struct inode
*inode
, struct writeback_control
*wbc
),
112 __array(char, name
, 32)
113 __field(unsigned long, ino
)
114 __field(int, sync_mode
)
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
;
124 TP_printk("bdi %s: ino=%lu sync_mode=%d",
131 DEFINE_EVENT(writeback_write_inode_template
, writeback_write_inode_start
,
133 TP_PROTO(struct inode
*inode
, struct writeback_control
*wbc
),
138 DEFINE_EVENT(writeback_write_inode_template
, writeback_write_inode
,
140 TP_PROTO(struct inode
*inode
, struct writeback_control
*wbc
),
145 DECLARE_EVENT_CLASS(writeback_work_class
,
146 TP_PROTO(struct backing_dev_info
*bdi
, struct wb_writeback_work
*work
),
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
)
159 struct device
*dev
= bdi
->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
;
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",
174 MAJOR(__entry
->sb_dev
), MINOR(__entry
->sb_dev
),
177 __entry
->for_kupdate
,
178 __entry
->range_cyclic
,
179 __entry
->for_background
,
180 __print_symbolic(__entry
->reason
, WB_WORK_REASON
)
183 #define DEFINE_WRITEBACK_WORK_EVENT(name) \
184 DEFINE_EVENT(writeback_work_class, name, \
185 TP_PROTO(struct backing_dev_info *bdi, struct wb_writeback_work *work), \
187 DEFINE_WRITEBACK_WORK_EVENT(writeback_queue
);
188 DEFINE_WRITEBACK_WORK_EVENT(writeback_exec
);
189 DEFINE_WRITEBACK_WORK_EVENT(writeback_start
);
190 DEFINE_WRITEBACK_WORK_EVENT(writeback_written
);
191 DEFINE_WRITEBACK_WORK_EVENT(writeback_wait
);
193 TRACE_EVENT(writeback_pages_written
,
194 TP_PROTO(long pages_written
),
195 TP_ARGS(pages_written
),
200 __entry
->pages
= pages_written
;
202 TP_printk("%ld", __entry
->pages
)
205 DECLARE_EVENT_CLASS(writeback_class
,
206 TP_PROTO(struct backing_dev_info
*bdi
),
209 __array(char, name
, 32)
212 strncpy(__entry
->name
, dev_name(bdi
->dev
), 32);
218 #define DEFINE_WRITEBACK_EVENT(name) \
219 DEFINE_EVENT(writeback_class, name, \
220 TP_PROTO(struct backing_dev_info *bdi), \
223 DEFINE_WRITEBACK_EVENT(writeback_nowork
);
224 DEFINE_WRITEBACK_EVENT(writeback_wake_background
);
225 DEFINE_WRITEBACK_EVENT(writeback_bdi_register
);
226 DEFINE_WRITEBACK_EVENT(writeback_bdi_unregister
);
228 DECLARE_EVENT_CLASS(wbc_class
,
229 TP_PROTO(struct writeback_control
*wbc
, struct backing_dev_info
*bdi
),
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
)
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
;
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",
261 __entry
->nr_to_write
,
262 __entry
->pages_skipped
,
264 __entry
->for_kupdate
,
265 __entry
->for_background
,
266 __entry
->for_reclaim
,
267 __entry
->range_cyclic
,
268 __entry
->range_start
,
272 #define DEFINE_WBC_EVENT(name) \
273 DEFINE_EVENT(wbc_class, name, \
274 TP_PROTO(struct writeback_control *wbc, struct backing_dev_info *bdi), \
276 DEFINE_WBC_EVENT(wbc_writepage
);
278 TRACE_EVENT(writeback_queue_io
,
279 TP_PROTO(struct bdi_writeback
*wb
,
280 struct wb_writeback_work
*work
,
282 TP_ARGS(wb
, work
, moved
),
284 __array(char, name
, 32)
285 __field(unsigned long, older
)
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
;
299 TP_printk("bdi %s: older=%lu age=%ld enqueue=%d reason=%s",
301 __entry
->older
, /* older_than_this in jiffies */
302 __entry
->age
, /* older_than_this in relative milliseconds */
304 __print_symbolic(__entry
->reason
, WB_WORK_REASON
)
308 TRACE_EVENT(global_dirty_state
,
310 TP_PROTO(unsigned long background_thresh
,
311 unsigned long dirty_thresh
314 TP_ARGS(background_thresh
,
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
)
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
;
340 TP_printk("dirty=%lu writeback=%lu unstable=%lu "
341 "bg_thresh=%lu thresh=%lu limit=%lu "
342 "dirtied=%lu written=%lu",
344 __entry
->nr_writeback
,
345 __entry
->nr_unstable
,
346 __entry
->background_thresh
,
347 __entry
->dirty_thresh
,
348 __entry
->dirty_limit
,
354 #define KBps(x) ((x) << (PAGE_SHIFT - 10))
356 TRACE_EVENT(bdi_dirty_ratelimit
,
358 TP_PROTO(struct backing_dev_info
*bdi
,
359 unsigned long dirty_rate
,
360 unsigned long task_ratelimit
),
362 TP_ARGS(bdi
, dirty_rate
, task_ratelimit
),
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
)
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
);
386 "write_bw=%lu awrite_bw=%lu dirty_rate=%lu "
387 "dirty_ratelimit=%lu task_ratelimit=%lu "
388 "balanced_dirty_ratelimit=%lu",
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 */
399 TRACE_EVENT(balance_dirty_pages
,
401 TP_PROTO(struct backing_dev_info
*bdi
,
402 unsigned long thresh
,
403 unsigned long bg_thresh
,
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
,
412 unsigned long start_time
),
414 TP_ARGS(bdi
, thresh
, bg_thresh
, dirty
, bdi_thresh
, bdi_dirty
,
415 dirty_ratelimit
, task_ratelimit
,
416 dirtied
, period
, pause
, start_time
),
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
)
436 unsigned long freerun
= (thresh
+ bg_thresh
) / 2;
437 strlcpy(__entry
->bdi
, dev_name(bdi
->dev
), 32);
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
;
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",
467 __entry
->bdi_setpoint
,
469 __entry
->dirty_ratelimit
,
470 __entry
->task_ratelimit
,
472 __entry
->dirtied_pause
,
473 __entry
->paused
, /* ms */
474 __entry
->pause
, /* ms */
475 __entry
->period
, /* ms */
476 __entry
->think
/* ms */
480 TRACE_EVENT(writeback_sb_inodes_requeue
,
482 TP_PROTO(struct inode
*inode
),
486 __array(char, name
, 32)
487 __field(unsigned long, ino
)
488 __field(unsigned long, state
)
489 __field(unsigned long, dirtied_when
)
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
;
500 TP_printk("bdi %s: ino=%lu state=%s dirtied_when=%lu age=%lu",
503 show_inode_state(__entry
->state
),
504 __entry
->dirtied_when
,
505 (jiffies
- __entry
->dirtied_when
) / HZ
509 DECLARE_EVENT_CLASS(writeback_congest_waited_template
,
511 TP_PROTO(unsigned int usec_timeout
, unsigned int usec_delayed
),
513 TP_ARGS(usec_timeout
, usec_delayed
),
516 __field( unsigned int, usec_timeout
)
517 __field( unsigned int, usec_delayed
)
521 __entry
->usec_timeout
= usec_timeout
;
522 __entry
->usec_delayed
= usec_delayed
;
525 TP_printk("usec_timeout=%u usec_delayed=%u",
526 __entry
->usec_timeout
,
527 __entry
->usec_delayed
)
530 DEFINE_EVENT(writeback_congest_waited_template
, writeback_congestion_wait
,
532 TP_PROTO(unsigned int usec_timeout
, unsigned int usec_delayed
),
534 TP_ARGS(usec_timeout
, usec_delayed
)
537 DEFINE_EVENT(writeback_congest_waited_template
, writeback_wait_iff_congested
,
539 TP_PROTO(unsigned int usec_timeout
, unsigned int usec_delayed
),
541 TP_ARGS(usec_timeout
, usec_delayed
)
544 DECLARE_EVENT_CLASS(writeback_single_inode_template
,
546 TP_PROTO(struct inode
*inode
,
547 struct writeback_control
*wbc
,
548 unsigned long nr_to_write
551 TP_ARGS(inode
, wbc
, nr_to_write
),
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
)
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
;
574 TP_printk("bdi %s: ino=%lu state=%s dirtied_when=%lu age=%lu "
575 "index=%lu to_write=%ld wrote=%lu",
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
,
587 DEFINE_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
)
594 DEFINE_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
)
601 #endif /* _TRACE_WRITEBACK_H */
603 /* This part must be outside protection */
604 #include <trace/define_trace.h>