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1/* SPDX-License-Identifier: GPL-2.0 */
2#undef TRACE_SYSTEM
3#define TRACE_SYSTEM block
4
5#if !defined(_TRACE_BLOCK_H) || defined(TRACE_HEADER_MULTI_READ)
6#define _TRACE_BLOCK_H
7
8#include <linux/blktrace_api.h>
9#include <linux/blkdev.h>
10#include <linux/buffer_head.h>
11#include <linux/tracepoint.h>
12
13#define RWBS_LEN 8
14
15DECLARE_EVENT_CLASS(block_buffer,
16
17 TP_PROTO(struct buffer_head *bh),
18
19 TP_ARGS(bh),
20
21 TP_STRUCT__entry (
22 __field( dev_t, dev )
23 __field( sector_t, sector )
24 __field( size_t, size )
25 ),
26
27 TP_fast_assign(
28 __entry->dev = bh->b_bdev->bd_dev;
29 __entry->sector = bh->b_blocknr;
30 __entry->size = bh->b_size;
31 ),
32
33 TP_printk("%d,%d sector=%llu size=%zu",
34 MAJOR(__entry->dev), MINOR(__entry->dev),
35 (unsigned long long)__entry->sector, __entry->size
36 )
37);
38
39/**
40 * block_touch_buffer - mark a buffer accessed
41 * @bh: buffer_head being touched
42 *
43 * Called from touch_buffer().
44 */
45DEFINE_EVENT(block_buffer, block_touch_buffer,
46
47 TP_PROTO(struct buffer_head *bh),
48
49 TP_ARGS(bh)
50);
51
52/**
53 * block_dirty_buffer - mark a buffer dirty
54 * @bh: buffer_head being dirtied
55 *
56 * Called from mark_buffer_dirty().
57 */
58DEFINE_EVENT(block_buffer, block_dirty_buffer,
59
60 TP_PROTO(struct buffer_head *bh),
61
62 TP_ARGS(bh)
63);
64
65/**
66 * block_rq_requeue - place block IO request back on a queue
67 * @q: queue holding operation
68 * @rq: block IO operation request
69 *
70 * The block operation request @rq is being placed back into queue
71 * @q. For some reason the request was not completed and needs to be
72 * put back in the queue.
73 */
74TRACE_EVENT(block_rq_requeue,
75
76 TP_PROTO(struct request_queue *q, struct request *rq),
77
78 TP_ARGS(q, rq),
79
80 TP_STRUCT__entry(
81 __field( dev_t, dev )
82 __field( sector_t, sector )
83 __field( unsigned int, nr_sector )
84 __array( char, rwbs, RWBS_LEN )
85 __dynamic_array( char, cmd, 1 )
86 ),
87
88 TP_fast_assign(
89 __entry->dev = rq->rq_disk ? disk_devt(rq->rq_disk) : 0;
90 __entry->sector = blk_rq_trace_sector(rq);
91 __entry->nr_sector = blk_rq_trace_nr_sectors(rq);
92
93 blk_fill_rwbs(__entry->rwbs, rq->cmd_flags, blk_rq_bytes(rq));
94 __get_str(cmd)[0] = '\0';
95 ),
96
97 TP_printk("%d,%d %s (%s) %llu + %u [%d]",
98 MAJOR(__entry->dev), MINOR(__entry->dev),
99 __entry->rwbs, __get_str(cmd),
100 (unsigned long long)__entry->sector,
101 __entry->nr_sector, 0)
102);
103
104/**
105 * block_rq_complete - block IO operation completed by device driver
106 * @rq: block operations request
107 * @error: status code
108 * @nr_bytes: number of completed bytes
109 *
110 * The block_rq_complete tracepoint event indicates that some portion
111 * of operation request has been completed by the device driver. If
112 * the @rq->bio is %NULL, then there is absolutely no additional work to
113 * do for the request. If @rq->bio is non-NULL then there is
114 * additional work required to complete the request.
115 */
116TRACE_EVENT(block_rq_complete,
117
118 TP_PROTO(struct request *rq, int error, unsigned int nr_bytes),
119
120 TP_ARGS(rq, error, nr_bytes),
121
122 TP_STRUCT__entry(
123 __field( dev_t, dev )
124 __field( sector_t, sector )
125 __field( unsigned int, nr_sector )
126 __field( int, error )
127 __array( char, rwbs, RWBS_LEN )
128 __dynamic_array( char, cmd, 1 )
129 ),
130
131 TP_fast_assign(
132 __entry->dev = rq->rq_disk ? disk_devt(rq->rq_disk) : 0;
133 __entry->sector = blk_rq_pos(rq);
134 __entry->nr_sector = nr_bytes >> 9;
135 __entry->error = error;
136
137 blk_fill_rwbs(__entry->rwbs, rq->cmd_flags, nr_bytes);
138 __get_str(cmd)[0] = '\0';
139 ),
140
141 TP_printk("%d,%d %s (%s) %llu + %u [%d]",
142 MAJOR(__entry->dev), MINOR(__entry->dev),
143 __entry->rwbs, __get_str(cmd),
144 (unsigned long long)__entry->sector,
145 __entry->nr_sector, __entry->error)
146);
147
148DECLARE_EVENT_CLASS(block_rq,
149
150 TP_PROTO(struct request_queue *q, struct request *rq),
151
152 TP_ARGS(q, rq),
153
154 TP_STRUCT__entry(
155 __field( dev_t, dev )
156 __field( sector_t, sector )
157 __field( unsigned int, nr_sector )
158 __field( unsigned int, bytes )
159 __array( char, rwbs, RWBS_LEN )
160 __array( char, comm, TASK_COMM_LEN )
161 __dynamic_array( char, cmd, 1 )
162 ),
163
164 TP_fast_assign(
165 __entry->dev = rq->rq_disk ? disk_devt(rq->rq_disk) : 0;
166 __entry->sector = blk_rq_trace_sector(rq);
167 __entry->nr_sector = blk_rq_trace_nr_sectors(rq);
168 __entry->bytes = blk_rq_bytes(rq);
169
170 blk_fill_rwbs(__entry->rwbs, rq->cmd_flags, blk_rq_bytes(rq));
171 __get_str(cmd)[0] = '\0';
172 memcpy(__entry->comm, current->comm, TASK_COMM_LEN);
173 ),
174
175 TP_printk("%d,%d %s %u (%s) %llu + %u [%s]",
176 MAJOR(__entry->dev), MINOR(__entry->dev),
177 __entry->rwbs, __entry->bytes, __get_str(cmd),
178 (unsigned long long)__entry->sector,
179 __entry->nr_sector, __entry->comm)
180);
181
182/**
183 * block_rq_insert - insert block operation request into queue
184 * @q: target queue
185 * @rq: block IO operation request
186 *
187 * Called immediately before block operation request @rq is inserted
188 * into queue @q. The fields in the operation request @rq struct can
189 * be examined to determine which device and sectors the pending
190 * operation would access.
191 */
192DEFINE_EVENT(block_rq, block_rq_insert,
193
194 TP_PROTO(struct request_queue *q, struct request *rq),
195
196 TP_ARGS(q, rq)
197);
198
199/**
200 * block_rq_issue - issue pending block IO request operation to device driver
201 * @q: queue holding operation
202 * @rq: block IO operation operation request
203 *
204 * Called when block operation request @rq from queue @q is sent to a
205 * device driver for processing.
206 */
207DEFINE_EVENT(block_rq, block_rq_issue,
208
209 TP_PROTO(struct request_queue *q, struct request *rq),
210
211 TP_ARGS(q, rq)
212);
213
214/**
215 * block_bio_bounce - used bounce buffer when processing block operation
216 * @q: queue holding the block operation
217 * @bio: block operation
218 *
219 * A bounce buffer was used to handle the block operation @bio in @q.
220 * This occurs when hardware limitations prevent a direct transfer of
221 * data between the @bio data memory area and the IO device. Use of a
222 * bounce buffer requires extra copying of data and decreases
223 * performance.
224 */
225TRACE_EVENT(block_bio_bounce,
226
227 TP_PROTO(struct request_queue *q, struct bio *bio),
228
229 TP_ARGS(q, bio),
230
231 TP_STRUCT__entry(
232 __field( dev_t, dev )
233 __field( sector_t, sector )
234 __field( unsigned int, nr_sector )
235 __array( char, rwbs, RWBS_LEN )
236 __array( char, comm, TASK_COMM_LEN )
237 ),
238
239 TP_fast_assign(
240 __entry->dev = bio_dev(bio);
241 __entry->sector = bio->bi_iter.bi_sector;
242 __entry->nr_sector = bio_sectors(bio);
243 blk_fill_rwbs(__entry->rwbs, bio->bi_opf, bio->bi_iter.bi_size);
244 memcpy(__entry->comm, current->comm, TASK_COMM_LEN);
245 ),
246
247 TP_printk("%d,%d %s %llu + %u [%s]",
248 MAJOR(__entry->dev), MINOR(__entry->dev), __entry->rwbs,
249 (unsigned long long)__entry->sector,
250 __entry->nr_sector, __entry->comm)
251);
252
253/**
254 * block_bio_complete - completed all work on the block operation
255 * @q: queue holding the block operation
256 * @bio: block operation completed
257 * @error: io error value
258 *
259 * This tracepoint indicates there is no further work to do on this
260 * block IO operation @bio.
261 */
262TRACE_EVENT(block_bio_complete,
263
264 TP_PROTO(struct request_queue *q, struct bio *bio, int error),
265
266 TP_ARGS(q, bio, error),
267
268 TP_STRUCT__entry(
269 __field( dev_t, dev )
270 __field( sector_t, sector )
271 __field( unsigned, nr_sector )
272 __field( int, error )
273 __array( char, rwbs, RWBS_LEN)
274 ),
275
276 TP_fast_assign(
277 __entry->dev = bio_dev(bio);
278 __entry->sector = bio->bi_iter.bi_sector;
279 __entry->nr_sector = bio_sectors(bio);
280 __entry->error = error;
281 blk_fill_rwbs(__entry->rwbs, bio->bi_opf, bio->bi_iter.bi_size);
282 ),
283
284 TP_printk("%d,%d %s %llu + %u [%d]",
285 MAJOR(__entry->dev), MINOR(__entry->dev), __entry->rwbs,
286 (unsigned long long)__entry->sector,
287 __entry->nr_sector, __entry->error)
288);
289
290DECLARE_EVENT_CLASS(block_bio_merge,
291
292 TP_PROTO(struct request_queue *q, struct request *rq, struct bio *bio),
293
294 TP_ARGS(q, rq, bio),
295
296 TP_STRUCT__entry(
297 __field( dev_t, dev )
298 __field( sector_t, sector )
299 __field( unsigned int, nr_sector )
300 __array( char, rwbs, RWBS_LEN )
301 __array( char, comm, TASK_COMM_LEN )
302 ),
303
304 TP_fast_assign(
305 __entry->dev = bio_dev(bio);
306 __entry->sector = bio->bi_iter.bi_sector;
307 __entry->nr_sector = bio_sectors(bio);
308 blk_fill_rwbs(__entry->rwbs, bio->bi_opf, bio->bi_iter.bi_size);
309 memcpy(__entry->comm, current->comm, TASK_COMM_LEN);
310 ),
311
312 TP_printk("%d,%d %s %llu + %u [%s]",
313 MAJOR(__entry->dev), MINOR(__entry->dev), __entry->rwbs,
314 (unsigned long long)__entry->sector,
315 __entry->nr_sector, __entry->comm)
316);
317
318/**
319 * block_bio_backmerge - merging block operation to the end of an existing operation
320 * @q: queue holding operation
321 * @rq: request bio is being merged into
322 * @bio: new block operation to merge
323 *
324 * Merging block request @bio to the end of an existing block request
325 * in queue @q.
326 */
327DEFINE_EVENT(block_bio_merge, block_bio_backmerge,
328
329 TP_PROTO(struct request_queue *q, struct request *rq, struct bio *bio),
330
331 TP_ARGS(q, rq, bio)
332);
333
334/**
335 * block_bio_frontmerge - merging block operation to the beginning of an existing operation
336 * @q: queue holding operation
337 * @rq: request bio is being merged into
338 * @bio: new block operation to merge
339 *
340 * Merging block IO operation @bio to the beginning of an existing block
341 * operation in queue @q.
342 */
343DEFINE_EVENT(block_bio_merge, block_bio_frontmerge,
344
345 TP_PROTO(struct request_queue *q, struct request *rq, struct bio *bio),
346
347 TP_ARGS(q, rq, bio)
348);
349
350/**
351 * block_bio_queue - putting new block IO operation in queue
352 * @q: queue holding operation
353 * @bio: new block operation
354 *
355 * About to place the block IO operation @bio into queue @q.
356 */
357TRACE_EVENT(block_bio_queue,
358
359 TP_PROTO(struct request_queue *q, struct bio *bio),
360
361 TP_ARGS(q, bio),
362
363 TP_STRUCT__entry(
364 __field( dev_t, dev )
365 __field( sector_t, sector )
366 __field( unsigned int, nr_sector )
367 __array( char, rwbs, RWBS_LEN )
368 __array( char, comm, TASK_COMM_LEN )
369 ),
370
371 TP_fast_assign(
372 __entry->dev = bio_dev(bio);
373 __entry->sector = bio->bi_iter.bi_sector;
374 __entry->nr_sector = bio_sectors(bio);
375 blk_fill_rwbs(__entry->rwbs, bio->bi_opf, bio->bi_iter.bi_size);
376 memcpy(__entry->comm, current->comm, TASK_COMM_LEN);
377 ),
378
379 TP_printk("%d,%d %s %llu + %u [%s]",
380 MAJOR(__entry->dev), MINOR(__entry->dev), __entry->rwbs,
381 (unsigned long long)__entry->sector,
382 __entry->nr_sector, __entry->comm)
383);
384
385DECLARE_EVENT_CLASS(block_get_rq,
386
387 TP_PROTO(struct request_queue *q, struct bio *bio, int rw),
388
389 TP_ARGS(q, bio, rw),
390
391 TP_STRUCT__entry(
392 __field( dev_t, dev )
393 __field( sector_t, sector )
394 __field( unsigned int, nr_sector )
395 __array( char, rwbs, RWBS_LEN )
396 __array( char, comm, TASK_COMM_LEN )
397 ),
398
399 TP_fast_assign(
400 __entry->dev = bio ? bio_dev(bio) : 0;
401 __entry->sector = bio ? bio->bi_iter.bi_sector : 0;
402 __entry->nr_sector = bio ? bio_sectors(bio) : 0;
403 blk_fill_rwbs(__entry->rwbs,
404 bio ? bio->bi_opf : 0, __entry->nr_sector);
405 memcpy(__entry->comm, current->comm, TASK_COMM_LEN);
406 ),
407
408 TP_printk("%d,%d %s %llu + %u [%s]",
409 MAJOR(__entry->dev), MINOR(__entry->dev), __entry->rwbs,
410 (unsigned long long)__entry->sector,
411 __entry->nr_sector, __entry->comm)
412);
413
414/**
415 * block_getrq - get a free request entry in queue for block IO operations
416 * @q: queue for operations
417 * @bio: pending block IO operation (can be %NULL)
418 * @rw: low bit indicates a read (%0) or a write (%1)
419 *
420 * A request struct for queue @q has been allocated to handle the
421 * block IO operation @bio.
422 */
423DEFINE_EVENT(block_get_rq, block_getrq,
424
425 TP_PROTO(struct request_queue *q, struct bio *bio, int rw),
426
427 TP_ARGS(q, bio, rw)
428);
429
430/**
431 * block_sleeprq - waiting to get a free request entry in queue for block IO operation
432 * @q: queue for operation
433 * @bio: pending block IO operation (can be %NULL)
434 * @rw: low bit indicates a read (%0) or a write (%1)
435 *
436 * In the case where a request struct cannot be provided for queue @q
437 * the process needs to wait for an request struct to become
438 * available. This tracepoint event is generated each time the
439 * process goes to sleep waiting for request struct become available.
440 */
441DEFINE_EVENT(block_get_rq, block_sleeprq,
442
443 TP_PROTO(struct request_queue *q, struct bio *bio, int rw),
444
445 TP_ARGS(q, bio, rw)
446);
447
448/**
449 * block_plug - keep operations requests in request queue
450 * @q: request queue to plug
451 *
452 * Plug the request queue @q. Do not allow block operation requests
453 * to be sent to the device driver. Instead, accumulate requests in
454 * the queue to improve throughput performance of the block device.
455 */
456TRACE_EVENT(block_plug,
457
458 TP_PROTO(struct request_queue *q),
459
460 TP_ARGS(q),
461
462 TP_STRUCT__entry(
463 __array( char, comm, TASK_COMM_LEN )
464 ),
465
466 TP_fast_assign(
467 memcpy(__entry->comm, current->comm, TASK_COMM_LEN);
468 ),
469
470 TP_printk("[%s]", __entry->comm)
471);
472
473DECLARE_EVENT_CLASS(block_unplug,
474
475 TP_PROTO(struct request_queue *q, unsigned int depth, bool explicit),
476
477 TP_ARGS(q, depth, explicit),
478
479 TP_STRUCT__entry(
480 __field( int, nr_rq )
481 __array( char, comm, TASK_COMM_LEN )
482 ),
483
484 TP_fast_assign(
485 __entry->nr_rq = depth;
486 memcpy(__entry->comm, current->comm, TASK_COMM_LEN);
487 ),
488
489 TP_printk("[%s] %d", __entry->comm, __entry->nr_rq)
490);
491
492/**
493 * block_unplug - release of operations requests in request queue
494 * @q: request queue to unplug
495 * @depth: number of requests just added to the queue
496 * @explicit: whether this was an explicit unplug, or one from schedule()
497 *
498 * Unplug request queue @q because device driver is scheduled to work
499 * on elements in the request queue.
500 */
501DEFINE_EVENT(block_unplug, block_unplug,
502
503 TP_PROTO(struct request_queue *q, unsigned int depth, bool explicit),
504
505 TP_ARGS(q, depth, explicit)
506);
507
508/**
509 * block_split - split a single bio struct into two bio structs
510 * @q: queue containing the bio
511 * @bio: block operation being split
512 * @new_sector: The starting sector for the new bio
513 *
514 * The bio request @bio in request queue @q needs to be split into two
515 * bio requests. The newly created @bio request starts at
516 * @new_sector. This split may be required due to hardware limitation
517 * such as operation crossing device boundaries in a RAID system.
518 */
519TRACE_EVENT(block_split,
520
521 TP_PROTO(struct request_queue *q, struct bio *bio,
522 unsigned int new_sector),
523
524 TP_ARGS(q, bio, new_sector),
525
526 TP_STRUCT__entry(
527 __field( dev_t, dev )
528 __field( sector_t, sector )
529 __field( sector_t, new_sector )
530 __array( char, rwbs, RWBS_LEN )
531 __array( char, comm, TASK_COMM_LEN )
532 ),
533
534 TP_fast_assign(
535 __entry->dev = bio_dev(bio);
536 __entry->sector = bio->bi_iter.bi_sector;
537 __entry->new_sector = new_sector;
538 blk_fill_rwbs(__entry->rwbs, bio->bi_opf, bio->bi_iter.bi_size);
539 memcpy(__entry->comm, current->comm, TASK_COMM_LEN);
540 ),
541
542 TP_printk("%d,%d %s %llu / %llu [%s]",
543 MAJOR(__entry->dev), MINOR(__entry->dev), __entry->rwbs,
544 (unsigned long long)__entry->sector,
545 (unsigned long long)__entry->new_sector,
546 __entry->comm)
547);
548
549/**
550 * block_bio_remap - map request for a logical device to the raw device
551 * @q: queue holding the operation
552 * @bio: revised operation
553 * @dev: device for the operation
554 * @from: original sector for the operation
555 *
556 * An operation for a logical device has been mapped to the
557 * raw block device.
558 */
559TRACE_EVENT(block_bio_remap,
560
561 TP_PROTO(struct request_queue *q, struct bio *bio, dev_t dev,
562 sector_t from),
563
564 TP_ARGS(q, bio, dev, from),
565
566 TP_STRUCT__entry(
567 __field( dev_t, dev )
568 __field( sector_t, sector )
569 __field( unsigned int, nr_sector )
570 __field( dev_t, old_dev )
571 __field( sector_t, old_sector )
572 __array( char, rwbs, RWBS_LEN)
573 ),
574
575 TP_fast_assign(
576 __entry->dev = bio_dev(bio);
577 __entry->sector = bio->bi_iter.bi_sector;
578 __entry->nr_sector = bio_sectors(bio);
579 __entry->old_dev = dev;
580 __entry->old_sector = from;
581 blk_fill_rwbs(__entry->rwbs, bio->bi_opf, bio->bi_iter.bi_size);
582 ),
583
584 TP_printk("%d,%d %s %llu + %u <- (%d,%d) %llu",
585 MAJOR(__entry->dev), MINOR(__entry->dev), __entry->rwbs,
586 (unsigned long long)__entry->sector,
587 __entry->nr_sector,
588 MAJOR(__entry->old_dev), MINOR(__entry->old_dev),
589 (unsigned long long)__entry->old_sector)
590);
591
592/**
593 * block_rq_remap - map request for a block operation request
594 * @q: queue holding the operation
595 * @rq: block IO operation request
596 * @dev: device for the operation
597 * @from: original sector for the operation
598 *
599 * The block operation request @rq in @q has been remapped. The block
600 * operation request @rq holds the current information and @from hold
601 * the original sector.
602 */
603TRACE_EVENT(block_rq_remap,
604
605 TP_PROTO(struct request_queue *q, struct request *rq, dev_t dev,
606 sector_t from),
607
608 TP_ARGS(q, rq, dev, from),
609
610 TP_STRUCT__entry(
611 __field( dev_t, dev )
612 __field( sector_t, sector )
613 __field( unsigned int, nr_sector )
614 __field( dev_t, old_dev )
615 __field( sector_t, old_sector )
616 __field( unsigned int, nr_bios )
617 __array( char, rwbs, RWBS_LEN)
618 ),
619
620 TP_fast_assign(
621 __entry->dev = disk_devt(rq->rq_disk);
622 __entry->sector = blk_rq_pos(rq);
623 __entry->nr_sector = blk_rq_sectors(rq);
624 __entry->old_dev = dev;
625 __entry->old_sector = from;
626 __entry->nr_bios = blk_rq_count_bios(rq);
627 blk_fill_rwbs(__entry->rwbs, rq->cmd_flags, blk_rq_bytes(rq));
628 ),
629
630 TP_printk("%d,%d %s %llu + %u <- (%d,%d) %llu %u",
631 MAJOR(__entry->dev), MINOR(__entry->dev), __entry->rwbs,
632 (unsigned long long)__entry->sector,
633 __entry->nr_sector,
634 MAJOR(__entry->old_dev), MINOR(__entry->old_dev),
635 (unsigned long long)__entry->old_sector, __entry->nr_bios)
636);
637
638#endif /* _TRACE_BLOCK_H */
639
640/* This part must be outside protection */
641#include <trace/define_trace.h>
642
1/* SPDX-License-Identifier: GPL-2.0 */
2#undef TRACE_SYSTEM
3#define TRACE_SYSTEM block
4
5#if !defined(_TRACE_BLOCK_H) || defined(TRACE_HEADER_MULTI_READ)
6#define _TRACE_BLOCK_H
7
8#include <linux/blktrace_api.h>
9#include <linux/blkdev.h>
10#include <linux/buffer_head.h>
11#include <linux/tracepoint.h>
12
13#define RWBS_LEN 8
14
15#ifdef CONFIG_BUFFER_HEAD
16DECLARE_EVENT_CLASS(block_buffer,
17
18 TP_PROTO(struct buffer_head *bh),
19
20 TP_ARGS(bh),
21
22 TP_STRUCT__entry (
23 __field( dev_t, dev )
24 __field( sector_t, sector )
25 __field( size_t, size )
26 ),
27
28 TP_fast_assign(
29 __entry->dev = bh->b_bdev->bd_dev;
30 __entry->sector = bh->b_blocknr;
31 __entry->size = bh->b_size;
32 ),
33
34 TP_printk("%d,%d sector=%llu size=%zu",
35 MAJOR(__entry->dev), MINOR(__entry->dev),
36 (unsigned long long)__entry->sector, __entry->size
37 )
38);
39
40/**
41 * block_touch_buffer - mark a buffer accessed
42 * @bh: buffer_head being touched
43 *
44 * Called from touch_buffer().
45 */
46DEFINE_EVENT(block_buffer, block_touch_buffer,
47
48 TP_PROTO(struct buffer_head *bh),
49
50 TP_ARGS(bh)
51);
52
53/**
54 * block_dirty_buffer - mark a buffer dirty
55 * @bh: buffer_head being dirtied
56 *
57 * Called from mark_buffer_dirty().
58 */
59DEFINE_EVENT(block_buffer, block_dirty_buffer,
60
61 TP_PROTO(struct buffer_head *bh),
62
63 TP_ARGS(bh)
64);
65#endif /* CONFIG_BUFFER_HEAD */
66
67/**
68 * block_rq_requeue - place block IO request back on a queue
69 * @rq: block IO operation request
70 *
71 * The block operation request @rq is being placed back into queue
72 * @q. For some reason the request was not completed and needs to be
73 * put back in the queue.
74 */
75TRACE_EVENT(block_rq_requeue,
76
77 TP_PROTO(struct request *rq),
78
79 TP_ARGS(rq),
80
81 TP_STRUCT__entry(
82 __field( dev_t, dev )
83 __field( sector_t, sector )
84 __field( unsigned int, nr_sector )
85 __array( char, rwbs, RWBS_LEN )
86 __dynamic_array( char, cmd, 1 )
87 ),
88
89 TP_fast_assign(
90 __entry->dev = rq->q->disk ? disk_devt(rq->q->disk) : 0;
91 __entry->sector = blk_rq_trace_sector(rq);
92 __entry->nr_sector = blk_rq_trace_nr_sectors(rq);
93
94 blk_fill_rwbs(__entry->rwbs, rq->cmd_flags);
95 __get_str(cmd)[0] = '\0';
96 ),
97
98 TP_printk("%d,%d %s (%s) %llu + %u [%d]",
99 MAJOR(__entry->dev), MINOR(__entry->dev),
100 __entry->rwbs, __get_str(cmd),
101 (unsigned long long)__entry->sector,
102 __entry->nr_sector, 0)
103);
104
105DECLARE_EVENT_CLASS(block_rq_completion,
106
107 TP_PROTO(struct request *rq, blk_status_t error, unsigned int nr_bytes),
108
109 TP_ARGS(rq, error, nr_bytes),
110
111 TP_STRUCT__entry(
112 __field( dev_t, dev )
113 __field( sector_t, sector )
114 __field( unsigned int, nr_sector )
115 __field( int , error )
116 __array( char, rwbs, RWBS_LEN )
117 __dynamic_array( char, cmd, 1 )
118 ),
119
120 TP_fast_assign(
121 __entry->dev = rq->q->disk ? disk_devt(rq->q->disk) : 0;
122 __entry->sector = blk_rq_pos(rq);
123 __entry->nr_sector = nr_bytes >> 9;
124 __entry->error = blk_status_to_errno(error);
125
126 blk_fill_rwbs(__entry->rwbs, rq->cmd_flags);
127 __get_str(cmd)[0] = '\0';
128 ),
129
130 TP_printk("%d,%d %s (%s) %llu + %u [%d]",
131 MAJOR(__entry->dev), MINOR(__entry->dev),
132 __entry->rwbs, __get_str(cmd),
133 (unsigned long long)__entry->sector,
134 __entry->nr_sector, __entry->error)
135);
136
137/**
138 * block_rq_complete - block IO operation completed by device driver
139 * @rq: block operations request
140 * @error: status code
141 * @nr_bytes: number of completed bytes
142 *
143 * The block_rq_complete tracepoint event indicates that some portion
144 * of operation request has been completed by the device driver. If
145 * the @rq->bio is %NULL, then there is absolutely no additional work to
146 * do for the request. If @rq->bio is non-NULL then there is
147 * additional work required to complete the request.
148 */
149DEFINE_EVENT(block_rq_completion, block_rq_complete,
150
151 TP_PROTO(struct request *rq, blk_status_t error, unsigned int nr_bytes),
152
153 TP_ARGS(rq, error, nr_bytes)
154);
155
156/**
157 * block_rq_error - block IO operation error reported by device driver
158 * @rq: block operations request
159 * @error: status code
160 * @nr_bytes: number of completed bytes
161 *
162 * The block_rq_error tracepoint event indicates that some portion
163 * of operation request has failed as reported by the device driver.
164 */
165DEFINE_EVENT(block_rq_completion, block_rq_error,
166
167 TP_PROTO(struct request *rq, blk_status_t error, unsigned int nr_bytes),
168
169 TP_ARGS(rq, error, nr_bytes)
170);
171
172DECLARE_EVENT_CLASS(block_rq,
173
174 TP_PROTO(struct request *rq),
175
176 TP_ARGS(rq),
177
178 TP_STRUCT__entry(
179 __field( dev_t, dev )
180 __field( sector_t, sector )
181 __field( unsigned int, nr_sector )
182 __field( unsigned int, bytes )
183 __array( char, rwbs, RWBS_LEN )
184 __array( char, comm, TASK_COMM_LEN )
185 __dynamic_array( char, cmd, 1 )
186 ),
187
188 TP_fast_assign(
189 __entry->dev = rq->q->disk ? disk_devt(rq->q->disk) : 0;
190 __entry->sector = blk_rq_trace_sector(rq);
191 __entry->nr_sector = blk_rq_trace_nr_sectors(rq);
192 __entry->bytes = blk_rq_bytes(rq);
193
194 blk_fill_rwbs(__entry->rwbs, rq->cmd_flags);
195 __get_str(cmd)[0] = '\0';
196 memcpy(__entry->comm, current->comm, TASK_COMM_LEN);
197 ),
198
199 TP_printk("%d,%d %s %u (%s) %llu + %u [%s]",
200 MAJOR(__entry->dev), MINOR(__entry->dev),
201 __entry->rwbs, __entry->bytes, __get_str(cmd),
202 (unsigned long long)__entry->sector,
203 __entry->nr_sector, __entry->comm)
204);
205
206/**
207 * block_rq_insert - insert block operation request into queue
208 * @rq: block IO operation request
209 *
210 * Called immediately before block operation request @rq is inserted
211 * into queue @q. The fields in the operation request @rq struct can
212 * be examined to determine which device and sectors the pending
213 * operation would access.
214 */
215DEFINE_EVENT(block_rq, block_rq_insert,
216
217 TP_PROTO(struct request *rq),
218
219 TP_ARGS(rq)
220);
221
222/**
223 * block_rq_issue - issue pending block IO request operation to device driver
224 * @rq: block IO operation request
225 *
226 * Called when block operation request @rq from queue @q is sent to a
227 * device driver for processing.
228 */
229DEFINE_EVENT(block_rq, block_rq_issue,
230
231 TP_PROTO(struct request *rq),
232
233 TP_ARGS(rq)
234);
235
236/**
237 * block_rq_merge - merge request with another one in the elevator
238 * @rq: block IO operation request
239 *
240 * Called when block operation request @rq from queue @q is merged to another
241 * request queued in the elevator.
242 */
243DEFINE_EVENT(block_rq, block_rq_merge,
244
245 TP_PROTO(struct request *rq),
246
247 TP_ARGS(rq)
248);
249
250/**
251 * block_io_start - insert a request for execution
252 * @rq: block IO operation request
253 *
254 * Called when block operation request @rq is queued for execution
255 */
256DEFINE_EVENT(block_rq, block_io_start,
257
258 TP_PROTO(struct request *rq),
259
260 TP_ARGS(rq)
261);
262
263/**
264 * block_io_done - block IO operation request completed
265 * @rq: block IO operation request
266 *
267 * Called when block operation request @rq is completed
268 */
269DEFINE_EVENT(block_rq, block_io_done,
270
271 TP_PROTO(struct request *rq),
272
273 TP_ARGS(rq)
274);
275
276/**
277 * block_bio_complete - completed all work on the block operation
278 * @q: queue holding the block operation
279 * @bio: block operation completed
280 *
281 * This tracepoint indicates there is no further work to do on this
282 * block IO operation @bio.
283 */
284TRACE_EVENT(block_bio_complete,
285
286 TP_PROTO(struct request_queue *q, struct bio *bio),
287
288 TP_ARGS(q, bio),
289
290 TP_STRUCT__entry(
291 __field( dev_t, dev )
292 __field( sector_t, sector )
293 __field( unsigned, nr_sector )
294 __field( int, error )
295 __array( char, rwbs, RWBS_LEN)
296 ),
297
298 TP_fast_assign(
299 __entry->dev = bio_dev(bio);
300 __entry->sector = bio->bi_iter.bi_sector;
301 __entry->nr_sector = bio_sectors(bio);
302 __entry->error = blk_status_to_errno(bio->bi_status);
303 blk_fill_rwbs(__entry->rwbs, bio->bi_opf);
304 ),
305
306 TP_printk("%d,%d %s %llu + %u [%d]",
307 MAJOR(__entry->dev), MINOR(__entry->dev), __entry->rwbs,
308 (unsigned long long)__entry->sector,
309 __entry->nr_sector, __entry->error)
310);
311
312DECLARE_EVENT_CLASS(block_bio,
313
314 TP_PROTO(struct bio *bio),
315
316 TP_ARGS(bio),
317
318 TP_STRUCT__entry(
319 __field( dev_t, dev )
320 __field( sector_t, sector )
321 __field( unsigned int, nr_sector )
322 __array( char, rwbs, RWBS_LEN )
323 __array( char, comm, TASK_COMM_LEN )
324 ),
325
326 TP_fast_assign(
327 __entry->dev = bio_dev(bio);
328 __entry->sector = bio->bi_iter.bi_sector;
329 __entry->nr_sector = bio_sectors(bio);
330 blk_fill_rwbs(__entry->rwbs, bio->bi_opf);
331 memcpy(__entry->comm, current->comm, TASK_COMM_LEN);
332 ),
333
334 TP_printk("%d,%d %s %llu + %u [%s]",
335 MAJOR(__entry->dev), MINOR(__entry->dev), __entry->rwbs,
336 (unsigned long long)__entry->sector,
337 __entry->nr_sector, __entry->comm)
338);
339
340/**
341 * block_bio_bounce - used bounce buffer when processing block operation
342 * @bio: block operation
343 *
344 * A bounce buffer was used to handle the block operation @bio in @q.
345 * This occurs when hardware limitations prevent a direct transfer of
346 * data between the @bio data memory area and the IO device. Use of a
347 * bounce buffer requires extra copying of data and decreases
348 * performance.
349 */
350DEFINE_EVENT(block_bio, block_bio_bounce,
351 TP_PROTO(struct bio *bio),
352 TP_ARGS(bio)
353);
354
355/**
356 * block_bio_backmerge - merging block operation to the end of an existing operation
357 * @bio: new block operation to merge
358 *
359 * Merging block request @bio to the end of an existing block request.
360 */
361DEFINE_EVENT(block_bio, block_bio_backmerge,
362 TP_PROTO(struct bio *bio),
363 TP_ARGS(bio)
364);
365
366/**
367 * block_bio_frontmerge - merging block operation to the beginning of an existing operation
368 * @bio: new block operation to merge
369 *
370 * Merging block IO operation @bio to the beginning of an existing block request.
371 */
372DEFINE_EVENT(block_bio, block_bio_frontmerge,
373 TP_PROTO(struct bio *bio),
374 TP_ARGS(bio)
375);
376
377/**
378 * block_bio_queue - putting new block IO operation in queue
379 * @bio: new block operation
380 *
381 * About to place the block IO operation @bio into queue @q.
382 */
383DEFINE_EVENT(block_bio, block_bio_queue,
384 TP_PROTO(struct bio *bio),
385 TP_ARGS(bio)
386);
387
388/**
389 * block_getrq - get a free request entry in queue for block IO operations
390 * @bio: pending block IO operation (can be %NULL)
391 *
392 * A request struct has been allocated to handle the block IO operation @bio.
393 */
394DEFINE_EVENT(block_bio, block_getrq,
395 TP_PROTO(struct bio *bio),
396 TP_ARGS(bio)
397);
398
399/**
400 * block_plug - keep operations requests in request queue
401 * @q: request queue to plug
402 *
403 * Plug the request queue @q. Do not allow block operation requests
404 * to be sent to the device driver. Instead, accumulate requests in
405 * the queue to improve throughput performance of the block device.
406 */
407TRACE_EVENT(block_plug,
408
409 TP_PROTO(struct request_queue *q),
410
411 TP_ARGS(q),
412
413 TP_STRUCT__entry(
414 __array( char, comm, TASK_COMM_LEN )
415 ),
416
417 TP_fast_assign(
418 memcpy(__entry->comm, current->comm, TASK_COMM_LEN);
419 ),
420
421 TP_printk("[%s]", __entry->comm)
422);
423
424DECLARE_EVENT_CLASS(block_unplug,
425
426 TP_PROTO(struct request_queue *q, unsigned int depth, bool explicit),
427
428 TP_ARGS(q, depth, explicit),
429
430 TP_STRUCT__entry(
431 __field( int, nr_rq )
432 __array( char, comm, TASK_COMM_LEN )
433 ),
434
435 TP_fast_assign(
436 __entry->nr_rq = depth;
437 memcpy(__entry->comm, current->comm, TASK_COMM_LEN);
438 ),
439
440 TP_printk("[%s] %d", __entry->comm, __entry->nr_rq)
441);
442
443/**
444 * block_unplug - release of operations requests in request queue
445 * @q: request queue to unplug
446 * @depth: number of requests just added to the queue
447 * @explicit: whether this was an explicit unplug, or one from schedule()
448 *
449 * Unplug request queue @q because device driver is scheduled to work
450 * on elements in the request queue.
451 */
452DEFINE_EVENT(block_unplug, block_unplug,
453
454 TP_PROTO(struct request_queue *q, unsigned int depth, bool explicit),
455
456 TP_ARGS(q, depth, explicit)
457);
458
459/**
460 * block_split - split a single bio struct into two bio structs
461 * @bio: block operation being split
462 * @new_sector: The starting sector for the new bio
463 *
464 * The bio request @bio needs to be split into two bio requests. The newly
465 * created @bio request starts at @new_sector. This split may be required due to
466 * hardware limitations such as operation crossing device boundaries in a RAID
467 * system.
468 */
469TRACE_EVENT(block_split,
470
471 TP_PROTO(struct bio *bio, unsigned int new_sector),
472
473 TP_ARGS(bio, new_sector),
474
475 TP_STRUCT__entry(
476 __field( dev_t, dev )
477 __field( sector_t, sector )
478 __field( sector_t, new_sector )
479 __array( char, rwbs, RWBS_LEN )
480 __array( char, comm, TASK_COMM_LEN )
481 ),
482
483 TP_fast_assign(
484 __entry->dev = bio_dev(bio);
485 __entry->sector = bio->bi_iter.bi_sector;
486 __entry->new_sector = new_sector;
487 blk_fill_rwbs(__entry->rwbs, bio->bi_opf);
488 memcpy(__entry->comm, current->comm, TASK_COMM_LEN);
489 ),
490
491 TP_printk("%d,%d %s %llu / %llu [%s]",
492 MAJOR(__entry->dev), MINOR(__entry->dev), __entry->rwbs,
493 (unsigned long long)__entry->sector,
494 (unsigned long long)__entry->new_sector,
495 __entry->comm)
496);
497
498/**
499 * block_bio_remap - map request for a logical device to the raw device
500 * @bio: revised operation
501 * @dev: original device for the operation
502 * @from: original sector for the operation
503 *
504 * An operation for a logical device has been mapped to the
505 * raw block device.
506 */
507TRACE_EVENT(block_bio_remap,
508
509 TP_PROTO(struct bio *bio, dev_t dev, sector_t from),
510
511 TP_ARGS(bio, dev, from),
512
513 TP_STRUCT__entry(
514 __field( dev_t, dev )
515 __field( sector_t, sector )
516 __field( unsigned int, nr_sector )
517 __field( dev_t, old_dev )
518 __field( sector_t, old_sector )
519 __array( char, rwbs, RWBS_LEN)
520 ),
521
522 TP_fast_assign(
523 __entry->dev = bio_dev(bio);
524 __entry->sector = bio->bi_iter.bi_sector;
525 __entry->nr_sector = bio_sectors(bio);
526 __entry->old_dev = dev;
527 __entry->old_sector = from;
528 blk_fill_rwbs(__entry->rwbs, bio->bi_opf);
529 ),
530
531 TP_printk("%d,%d %s %llu + %u <- (%d,%d) %llu",
532 MAJOR(__entry->dev), MINOR(__entry->dev), __entry->rwbs,
533 (unsigned long long)__entry->sector,
534 __entry->nr_sector,
535 MAJOR(__entry->old_dev), MINOR(__entry->old_dev),
536 (unsigned long long)__entry->old_sector)
537);
538
539/**
540 * block_rq_remap - map request for a block operation request
541 * @rq: block IO operation request
542 * @dev: device for the operation
543 * @from: original sector for the operation
544 *
545 * The block operation request @rq in @q has been remapped. The block
546 * operation request @rq holds the current information and @from hold
547 * the original sector.
548 */
549TRACE_EVENT(block_rq_remap,
550
551 TP_PROTO(struct request *rq, dev_t dev, sector_t from),
552
553 TP_ARGS(rq, dev, from),
554
555 TP_STRUCT__entry(
556 __field( dev_t, dev )
557 __field( sector_t, sector )
558 __field( unsigned int, nr_sector )
559 __field( dev_t, old_dev )
560 __field( sector_t, old_sector )
561 __field( unsigned int, nr_bios )
562 __array( char, rwbs, RWBS_LEN)
563 ),
564
565 TP_fast_assign(
566 __entry->dev = disk_devt(rq->q->disk);
567 __entry->sector = blk_rq_pos(rq);
568 __entry->nr_sector = blk_rq_sectors(rq);
569 __entry->old_dev = dev;
570 __entry->old_sector = from;
571 __entry->nr_bios = blk_rq_count_bios(rq);
572 blk_fill_rwbs(__entry->rwbs, rq->cmd_flags);
573 ),
574
575 TP_printk("%d,%d %s %llu + %u <- (%d,%d) %llu %u",
576 MAJOR(__entry->dev), MINOR(__entry->dev), __entry->rwbs,
577 (unsigned long long)__entry->sector,
578 __entry->nr_sector,
579 MAJOR(__entry->old_dev), MINOR(__entry->old_dev),
580 (unsigned long long)__entry->old_sector, __entry->nr_bios)
581);
582
583#endif /* _TRACE_BLOCK_H */
584
585/* This part must be outside protection */
586#include <trace/define_trace.h>
587