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