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