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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 * @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 */
73TRACE_EVENT(block_rq_requeue,
74
75 TP_PROTO(struct request *rq),
76
77 TP_ARGS(rq),
78
79 TP_STRUCT__entry(
80 __field( dev_t, dev )
81 __field( sector_t, sector )
82 __field( unsigned int, nr_sector )
83 __array( char, rwbs, RWBS_LEN )
84 __dynamic_array( char, cmd, 1 )
85 ),
86
87 TP_fast_assign(
88 __entry->dev = rq->q->disk ? disk_devt(rq->q->disk) : 0;
89 __entry->sector = blk_rq_trace_sector(rq);
90 __entry->nr_sector = blk_rq_trace_nr_sectors(rq);
91
92 blk_fill_rwbs(__entry->rwbs, rq->cmd_flags);
93 __get_str(cmd)[0] = '\0';
94 ),
95
96 TP_printk("%d,%d %s (%s) %llu + %u [%d]",
97 MAJOR(__entry->dev), MINOR(__entry->dev),
98 __entry->rwbs, __get_str(cmd),
99 (unsigned long long)__entry->sector,
100 __entry->nr_sector, 0)
101);
102
103DECLARE_EVENT_CLASS(block_rq_completion,
104
105 TP_PROTO(struct request *rq, blk_status_t error, unsigned int nr_bytes),
106
107 TP_ARGS(rq, error, nr_bytes),
108
109 TP_STRUCT__entry(
110 __field( dev_t, dev )
111 __field( sector_t, sector )
112 __field( unsigned int, nr_sector )
113 __field( int , error )
114 __array( char, rwbs, RWBS_LEN )
115 __dynamic_array( char, cmd, 1 )
116 ),
117
118 TP_fast_assign(
119 __entry->dev = rq->q->disk ? disk_devt(rq->q->disk) : 0;
120 __entry->sector = blk_rq_pos(rq);
121 __entry->nr_sector = nr_bytes >> 9;
122 __entry->error = blk_status_to_errno(error);
123
124 blk_fill_rwbs(__entry->rwbs, rq->cmd_flags);
125 __get_str(cmd)[0] = '\0';
126 ),
127
128 TP_printk("%d,%d %s (%s) %llu + %u [%d]",
129 MAJOR(__entry->dev), MINOR(__entry->dev),
130 __entry->rwbs, __get_str(cmd),
131 (unsigned long long)__entry->sector,
132 __entry->nr_sector, __entry->error)
133);
134
135/**
136 * block_rq_complete - block IO operation completed by device driver
137 * @rq: block operations request
138 * @error: status code
139 * @nr_bytes: number of completed bytes
140 *
141 * The block_rq_complete tracepoint event indicates that some portion
142 * of operation request has been completed by the device driver. If
143 * the @rq->bio is %NULL, then there is absolutely no additional work to
144 * do for the request. If @rq->bio is non-NULL then there is
145 * additional work required to complete the request.
146 */
147DEFINE_EVENT(block_rq_completion, block_rq_complete,
148
149 TP_PROTO(struct request *rq, blk_status_t error, unsigned int nr_bytes),
150
151 TP_ARGS(rq, error, nr_bytes)
152);
153
154/**
155 * block_rq_error - block IO operation error reported by device driver
156 * @rq: block operations request
157 * @error: status code
158 * @nr_bytes: number of completed bytes
159 *
160 * The block_rq_error tracepoint event indicates that some portion
161 * of operation request has failed as reported by the device driver.
162 */
163DEFINE_EVENT(block_rq_completion, block_rq_error,
164
165 TP_PROTO(struct request *rq, blk_status_t error, unsigned int nr_bytes),
166
167 TP_ARGS(rq, error, nr_bytes)
168);
169
170DECLARE_EVENT_CLASS(block_rq,
171
172 TP_PROTO(struct request *rq),
173
174 TP_ARGS(rq),
175
176 TP_STRUCT__entry(
177 __field( dev_t, dev )
178 __field( sector_t, sector )
179 __field( unsigned int, nr_sector )
180 __field( unsigned int, bytes )
181 __array( char, rwbs, RWBS_LEN )
182 __array( char, comm, TASK_COMM_LEN )
183 __dynamic_array( char, cmd, 1 )
184 ),
185
186 TP_fast_assign(
187 __entry->dev = rq->q->disk ? disk_devt(rq->q->disk) : 0;
188 __entry->sector = blk_rq_trace_sector(rq);
189 __entry->nr_sector = blk_rq_trace_nr_sectors(rq);
190 __entry->bytes = blk_rq_bytes(rq);
191
192 blk_fill_rwbs(__entry->rwbs, rq->cmd_flags);
193 __get_str(cmd)[0] = '\0';
194 memcpy(__entry->comm, current->comm, TASK_COMM_LEN);
195 ),
196
197 TP_printk("%d,%d %s %u (%s) %llu + %u [%s]",
198 MAJOR(__entry->dev), MINOR(__entry->dev),
199 __entry->rwbs, __entry->bytes, __get_str(cmd),
200 (unsigned long long)__entry->sector,
201 __entry->nr_sector, __entry->comm)
202);
203
204/**
205 * block_rq_insert - insert block operation request into queue
206 * @rq: block IO operation request
207 *
208 * Called immediately before block operation request @rq is inserted
209 * into queue @q. The fields in the operation request @rq struct can
210 * be examined to determine which device and sectors the pending
211 * operation would access.
212 */
213DEFINE_EVENT(block_rq, block_rq_insert,
214
215 TP_PROTO(struct request *rq),
216
217 TP_ARGS(rq)
218);
219
220/**
221 * block_rq_issue - issue pending block IO request operation to device driver
222 * @rq: block IO operation request
223 *
224 * Called when block operation request @rq from queue @q is sent to a
225 * device driver for processing.
226 */
227DEFINE_EVENT(block_rq, block_rq_issue,
228
229 TP_PROTO(struct request *rq),
230
231 TP_ARGS(rq)
232);
233
234/**
235 * block_rq_merge - merge request with another one in the elevator
236 * @rq: block IO operation request
237 *
238 * Called when block operation request @rq from queue @q is merged to another
239 * request queued in the elevator.
240 */
241DEFINE_EVENT(block_rq, block_rq_merge,
242
243 TP_PROTO(struct request *rq),
244
245 TP_ARGS(rq)
246);
247
248/**
249 * block_bio_complete - completed all work on the block operation
250 * @q: queue holding the block operation
251 * @bio: block operation completed
252 *
253 * This tracepoint indicates there is no further work to do on this
254 * block IO operation @bio.
255 */
256TRACE_EVENT(block_bio_complete,
257
258 TP_PROTO(struct request_queue *q, struct bio *bio),
259
260 TP_ARGS(q, bio),
261
262 TP_STRUCT__entry(
263 __field( dev_t, dev )
264 __field( sector_t, sector )
265 __field( unsigned, nr_sector )
266 __field( int, error )
267 __array( char, rwbs, RWBS_LEN)
268 ),
269
270 TP_fast_assign(
271 __entry->dev = bio_dev(bio);
272 __entry->sector = bio->bi_iter.bi_sector;
273 __entry->nr_sector = bio_sectors(bio);
274 __entry->error = blk_status_to_errno(bio->bi_status);
275 blk_fill_rwbs(__entry->rwbs, bio->bi_opf);
276 ),
277
278 TP_printk("%d,%d %s %llu + %u [%d]",
279 MAJOR(__entry->dev), MINOR(__entry->dev), __entry->rwbs,
280 (unsigned long long)__entry->sector,
281 __entry->nr_sector, __entry->error)
282);
283
284DECLARE_EVENT_CLASS(block_bio,
285
286 TP_PROTO(struct bio *bio),
287
288 TP_ARGS(bio),
289
290 TP_STRUCT__entry(
291 __field( dev_t, dev )
292 __field( sector_t, sector )
293 __field( unsigned int, nr_sector )
294 __array( char, rwbs, RWBS_LEN )
295 __array( char, comm, TASK_COMM_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 blk_fill_rwbs(__entry->rwbs, bio->bi_opf);
303 memcpy(__entry->comm, current->comm, TASK_COMM_LEN);
304 ),
305
306 TP_printk("%d,%d %s %llu + %u [%s]",
307 MAJOR(__entry->dev), MINOR(__entry->dev), __entry->rwbs,
308 (unsigned long long)__entry->sector,
309 __entry->nr_sector, __entry->comm)
310);
311
312/**
313 * block_bio_bounce - used bounce buffer when processing block operation
314 * @bio: block operation
315 *
316 * A bounce buffer was used to handle the block operation @bio in @q.
317 * This occurs when hardware limitations prevent a direct transfer of
318 * data between the @bio data memory area and the IO device. Use of a
319 * bounce buffer requires extra copying of data and decreases
320 * performance.
321 */
322DEFINE_EVENT(block_bio, block_bio_bounce,
323 TP_PROTO(struct bio *bio),
324 TP_ARGS(bio)
325);
326
327/**
328 * block_bio_backmerge - merging block operation to the end of an existing operation
329 * @bio: new block operation to merge
330 *
331 * Merging block request @bio to the end of an existing block request.
332 */
333DEFINE_EVENT(block_bio, block_bio_backmerge,
334 TP_PROTO(struct bio *bio),
335 TP_ARGS(bio)
336);
337
338/**
339 * block_bio_frontmerge - merging block operation to the beginning of an existing operation
340 * @bio: new block operation to merge
341 *
342 * Merging block IO operation @bio to the beginning of an existing block request.
343 */
344DEFINE_EVENT(block_bio, block_bio_frontmerge,
345 TP_PROTO(struct bio *bio),
346 TP_ARGS(bio)
347);
348
349/**
350 * block_bio_queue - putting new block IO operation in queue
351 * @bio: new block operation
352 *
353 * About to place the block IO operation @bio into queue @q.
354 */
355DEFINE_EVENT(block_bio, block_bio_queue,
356 TP_PROTO(struct bio *bio),
357 TP_ARGS(bio)
358);
359
360/**
361 * block_getrq - get a free request entry in queue for block IO operations
362 * @bio: pending block IO operation (can be %NULL)
363 *
364 * A request struct has been allocated to handle the block IO operation @bio.
365 */
366DEFINE_EVENT(block_bio, block_getrq,
367 TP_PROTO(struct bio *bio),
368 TP_ARGS(bio)
369);
370
371/**
372 * block_plug - keep operations requests in request queue
373 * @q: request queue to plug
374 *
375 * Plug the request queue @q. Do not allow block operation requests
376 * to be sent to the device driver. Instead, accumulate requests in
377 * the queue to improve throughput performance of the block device.
378 */
379TRACE_EVENT(block_plug,
380
381 TP_PROTO(struct request_queue *q),
382
383 TP_ARGS(q),
384
385 TP_STRUCT__entry(
386 __array( char, comm, TASK_COMM_LEN )
387 ),
388
389 TP_fast_assign(
390 memcpy(__entry->comm, current->comm, TASK_COMM_LEN);
391 ),
392
393 TP_printk("[%s]", __entry->comm)
394);
395
396DECLARE_EVENT_CLASS(block_unplug,
397
398 TP_PROTO(struct request_queue *q, unsigned int depth, bool explicit),
399
400 TP_ARGS(q, depth, explicit),
401
402 TP_STRUCT__entry(
403 __field( int, nr_rq )
404 __array( char, comm, TASK_COMM_LEN )
405 ),
406
407 TP_fast_assign(
408 __entry->nr_rq = depth;
409 memcpy(__entry->comm, current->comm, TASK_COMM_LEN);
410 ),
411
412 TP_printk("[%s] %d", __entry->comm, __entry->nr_rq)
413);
414
415/**
416 * block_unplug - release of operations requests in request queue
417 * @q: request queue to unplug
418 * @depth: number of requests just added to the queue
419 * @explicit: whether this was an explicit unplug, or one from schedule()
420 *
421 * Unplug request queue @q because device driver is scheduled to work
422 * on elements in the request queue.
423 */
424DEFINE_EVENT(block_unplug, block_unplug,
425
426 TP_PROTO(struct request_queue *q, unsigned int depth, bool explicit),
427
428 TP_ARGS(q, depth, explicit)
429);
430
431/**
432 * block_split - split a single bio struct into two bio structs
433 * @bio: block operation being split
434 * @new_sector: The starting sector for the new bio
435 *
436 * The bio request @bio needs to be split into two bio requests. The newly
437 * created @bio request starts at @new_sector. This split may be required due to
438 * hardware limitations such as operation crossing device boundaries in a RAID
439 * system.
440 */
441TRACE_EVENT(block_split,
442
443 TP_PROTO(struct bio *bio, unsigned int new_sector),
444
445 TP_ARGS(bio, new_sector),
446
447 TP_STRUCT__entry(
448 __field( dev_t, dev )
449 __field( sector_t, sector )
450 __field( sector_t, new_sector )
451 __array( char, rwbs, RWBS_LEN )
452 __array( char, comm, TASK_COMM_LEN )
453 ),
454
455 TP_fast_assign(
456 __entry->dev = bio_dev(bio);
457 __entry->sector = bio->bi_iter.bi_sector;
458 __entry->new_sector = new_sector;
459 blk_fill_rwbs(__entry->rwbs, bio->bi_opf);
460 memcpy(__entry->comm, current->comm, TASK_COMM_LEN);
461 ),
462
463 TP_printk("%d,%d %s %llu / %llu [%s]",
464 MAJOR(__entry->dev), MINOR(__entry->dev), __entry->rwbs,
465 (unsigned long long)__entry->sector,
466 (unsigned long long)__entry->new_sector,
467 __entry->comm)
468);
469
470/**
471 * block_bio_remap - map request for a logical device to the raw device
472 * @bio: revised operation
473 * @dev: original device for the operation
474 * @from: original sector for the operation
475 *
476 * An operation for a logical device has been mapped to the
477 * raw block device.
478 */
479TRACE_EVENT(block_bio_remap,
480
481 TP_PROTO(struct bio *bio, dev_t dev, sector_t from),
482
483 TP_ARGS(bio, dev, from),
484
485 TP_STRUCT__entry(
486 __field( dev_t, dev )
487 __field( sector_t, sector )
488 __field( unsigned int, nr_sector )
489 __field( dev_t, old_dev )
490 __field( sector_t, old_sector )
491 __array( char, rwbs, RWBS_LEN)
492 ),
493
494 TP_fast_assign(
495 __entry->dev = bio_dev(bio);
496 __entry->sector = bio->bi_iter.bi_sector;
497 __entry->nr_sector = bio_sectors(bio);
498 __entry->old_dev = dev;
499 __entry->old_sector = from;
500 blk_fill_rwbs(__entry->rwbs, bio->bi_opf);
501 ),
502
503 TP_printk("%d,%d %s %llu + %u <- (%d,%d) %llu",
504 MAJOR(__entry->dev), MINOR(__entry->dev), __entry->rwbs,
505 (unsigned long long)__entry->sector,
506 __entry->nr_sector,
507 MAJOR(__entry->old_dev), MINOR(__entry->old_dev),
508 (unsigned long long)__entry->old_sector)
509);
510
511/**
512 * block_rq_remap - map request for a block operation request
513 * @rq: block IO operation request
514 * @dev: device for the operation
515 * @from: original sector for the operation
516 *
517 * The block operation request @rq in @q has been remapped. The block
518 * operation request @rq holds the current information and @from hold
519 * the original sector.
520 */
521TRACE_EVENT(block_rq_remap,
522
523 TP_PROTO(struct request *rq, dev_t dev, sector_t from),
524
525 TP_ARGS(rq, dev, from),
526
527 TP_STRUCT__entry(
528 __field( dev_t, dev )
529 __field( sector_t, sector )
530 __field( unsigned int, nr_sector )
531 __field( dev_t, old_dev )
532 __field( sector_t, old_sector )
533 __field( unsigned int, nr_bios )
534 __array( char, rwbs, RWBS_LEN)
535 ),
536
537 TP_fast_assign(
538 __entry->dev = disk_devt(rq->q->disk);
539 __entry->sector = blk_rq_pos(rq);
540 __entry->nr_sector = blk_rq_sectors(rq);
541 __entry->old_dev = dev;
542 __entry->old_sector = from;
543 __entry->nr_bios = blk_rq_count_bios(rq);
544 blk_fill_rwbs(__entry->rwbs, rq->cmd_flags);
545 ),
546
547 TP_printk("%d,%d %s %llu + %u <- (%d,%d) %llu %u",
548 MAJOR(__entry->dev), MINOR(__entry->dev), __entry->rwbs,
549 (unsigned long long)__entry->sector,
550 __entry->nr_sector,
551 MAJOR(__entry->old_dev), MINOR(__entry->old_dev),
552 (unsigned long long)__entry->old_sector, __entry->nr_bios)
553);
554
555#endif /* _TRACE_BLOCK_H */
556
557/* This part must be outside protection */
558#include <trace/define_trace.h>
559
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/buffer_head.h>
10#include <linux/tracepoint.h>
11
12#define RWBS_LEN 8
13
14DECLARE_EVENT_CLASS(block_buffer,
15
16 TP_PROTO(struct buffer_head *bh),
17
18 TP_ARGS(bh),
19
20 TP_STRUCT__entry (
21 __field( dev_t, dev )
22 __field( sector_t, sector )
23 __field( size_t, size )
24 ),
25
26 TP_fast_assign(
27 __entry->dev = bh->b_bdev->bd_dev;
28 __entry->sector = bh->b_blocknr;
29 __entry->size = bh->b_size;
30 ),
31
32 TP_printk("%d,%d sector=%llu size=%zu",
33 MAJOR(__entry->dev), MINOR(__entry->dev),
34 (unsigned long long)__entry->sector, __entry->size
35 )
36);
37
38/**
39 * block_touch_buffer - mark a buffer accessed
40 * @bh: buffer_head being touched
41 *
42 * Called from touch_buffer().
43 */
44DEFINE_EVENT(block_buffer, block_touch_buffer,
45
46 TP_PROTO(struct buffer_head *bh),
47
48 TP_ARGS(bh)
49);
50
51/**
52 * block_dirty_buffer - mark a buffer dirty
53 * @bh: buffer_head being dirtied
54 *
55 * Called from mark_buffer_dirty().
56 */
57DEFINE_EVENT(block_buffer, block_dirty_buffer,
58
59 TP_PROTO(struct buffer_head *bh),
60
61 TP_ARGS(bh)
62);
63
64DECLARE_EVENT_CLASS(block_rq_with_error,
65
66 TP_PROTO(struct request_queue *q, struct request *rq),
67
68 TP_ARGS(q, rq),
69
70 TP_STRUCT__entry(
71 __field( dev_t, dev )
72 __field( sector_t, sector )
73 __field( unsigned int, nr_sector )
74 __field( int, errors )
75 __array( char, rwbs, RWBS_LEN )
76 __dynamic_array( char, cmd, blk_cmd_buf_len(rq) )
77 ),
78
79 TP_fast_assign(
80 __entry->dev = rq->rq_disk ? disk_devt(rq->rq_disk) : 0;
81 __entry->sector = (rq->cmd_type == REQ_TYPE_BLOCK_PC) ?
82 0 : blk_rq_pos(rq);
83 __entry->nr_sector = (rq->cmd_type == REQ_TYPE_BLOCK_PC) ?
84 0 : blk_rq_sectors(rq);
85 __entry->errors = rq->errors;
86
87 blk_fill_rwbs(__entry->rwbs, rq->cmd_flags, blk_rq_bytes(rq));
88 blk_dump_cmd(__get_str(cmd), rq);
89 ),
90
91 TP_printk("%d,%d %s (%s) %llu + %u [%d]",
92 MAJOR(__entry->dev), MINOR(__entry->dev),
93 __entry->rwbs, __get_str(cmd),
94 (unsigned long long)__entry->sector,
95 __entry->nr_sector, __entry->errors)
96);
97
98/**
99 * block_rq_abort - abort block operation request
100 * @q: queue containing the block operation request
101 * @rq: block IO operation request
102 *
103 * Called immediately after pending block IO operation request @rq in
104 * queue @q is aborted. The fields in the operation request @rq
105 * can be examined to determine which device and sectors the pending
106 * operation would access.
107 */
108DEFINE_EVENT(block_rq_with_error, block_rq_abort,
109
110 TP_PROTO(struct request_queue *q, struct request *rq),
111
112 TP_ARGS(q, rq)
113);
114
115/**
116 * block_rq_requeue - place block IO request back on a queue
117 * @q: queue holding operation
118 * @rq: block IO operation request
119 *
120 * The block operation request @rq is being placed back into queue
121 * @q. For some reason the request was not completed and needs to be
122 * put back in the queue.
123 */
124DEFINE_EVENT(block_rq_with_error, block_rq_requeue,
125
126 TP_PROTO(struct request_queue *q, struct request *rq),
127
128 TP_ARGS(q, rq)
129);
130
131/**
132 * block_rq_complete - block IO operation completed by device driver
133 * @q: queue containing the block operation request
134 * @rq: block operations request
135 * @nr_bytes: number of completed bytes
136 *
137 * The block_rq_complete tracepoint event indicates that some portion
138 * of operation request has been completed by the device driver. If
139 * the @rq->bio is %NULL, then there is absolutely no additional work to
140 * do for the request. If @rq->bio is non-NULL then there is
141 * additional work required to complete the request.
142 */
143TRACE_EVENT(block_rq_complete,
144
145 TP_PROTO(struct request_queue *q, struct request *rq,
146 unsigned int nr_bytes),
147
148 TP_ARGS(q, rq, nr_bytes),
149
150 TP_STRUCT__entry(
151 __field( dev_t, dev )
152 __field( sector_t, sector )
153 __field( unsigned int, nr_sector )
154 __field( int, errors )
155 __array( char, rwbs, RWBS_LEN )
156 __dynamic_array( char, cmd, blk_cmd_buf_len(rq) )
157 ),
158
159 TP_fast_assign(
160 __entry->dev = rq->rq_disk ? disk_devt(rq->rq_disk) : 0;
161 __entry->sector = blk_rq_pos(rq);
162 __entry->nr_sector = nr_bytes >> 9;
163 __entry->errors = rq->errors;
164
165 blk_fill_rwbs(__entry->rwbs, rq->cmd_flags, nr_bytes);
166 blk_dump_cmd(__get_str(cmd), rq);
167 ),
168
169 TP_printk("%d,%d %s (%s) %llu + %u [%d]",
170 MAJOR(__entry->dev), MINOR(__entry->dev),
171 __entry->rwbs, __get_str(cmd),
172 (unsigned long long)__entry->sector,
173 __entry->nr_sector, __entry->errors)
174);
175
176DECLARE_EVENT_CLASS(block_rq,
177
178 TP_PROTO(struct request_queue *q, struct request *rq),
179
180 TP_ARGS(q, rq),
181
182 TP_STRUCT__entry(
183 __field( dev_t, dev )
184 __field( sector_t, sector )
185 __field( unsigned int, nr_sector )
186 __field( unsigned int, bytes )
187 __array( char, rwbs, RWBS_LEN )
188 __array( char, comm, TASK_COMM_LEN )
189 __dynamic_array( char, cmd, blk_cmd_buf_len(rq) )
190 ),
191
192 TP_fast_assign(
193 __entry->dev = rq->rq_disk ? disk_devt(rq->rq_disk) : 0;
194 __entry->sector = (rq->cmd_type == REQ_TYPE_BLOCK_PC) ?
195 0 : blk_rq_pos(rq);
196 __entry->nr_sector = (rq->cmd_type == REQ_TYPE_BLOCK_PC) ?
197 0 : blk_rq_sectors(rq);
198 __entry->bytes = (rq->cmd_type == REQ_TYPE_BLOCK_PC) ?
199 blk_rq_bytes(rq) : 0;
200
201 blk_fill_rwbs(__entry->rwbs, rq->cmd_flags, blk_rq_bytes(rq));
202 blk_dump_cmd(__get_str(cmd), rq);
203 memcpy(__entry->comm, current->comm, TASK_COMM_LEN);
204 ),
205
206 TP_printk("%d,%d %s %u (%s) %llu + %u [%s]",
207 MAJOR(__entry->dev), MINOR(__entry->dev),
208 __entry->rwbs, __entry->bytes, __get_str(cmd),
209 (unsigned long long)__entry->sector,
210 __entry->nr_sector, __entry->comm)
211);
212
213/**
214 * block_rq_insert - insert block operation request into queue
215 * @q: target queue
216 * @rq: block IO operation request
217 *
218 * Called immediately before block operation request @rq is inserted
219 * into queue @q. The fields in the operation request @rq struct can
220 * be examined to determine which device and sectors the pending
221 * operation would access.
222 */
223DEFINE_EVENT(block_rq, block_rq_insert,
224
225 TP_PROTO(struct request_queue *q, struct request *rq),
226
227 TP_ARGS(q, rq)
228);
229
230/**
231 * block_rq_issue - issue pending block IO request operation to device driver
232 * @q: queue holding operation
233 * @rq: block IO operation operation request
234 *
235 * Called when block operation request @rq from queue @q is sent to a
236 * device driver for processing.
237 */
238DEFINE_EVENT(block_rq, block_rq_issue,
239
240 TP_PROTO(struct request_queue *q, struct request *rq),
241
242 TP_ARGS(q, rq)
243);
244
245/**
246 * block_bio_bounce - used bounce buffer when processing block operation
247 * @q: queue holding the block operation
248 * @bio: block operation
249 *
250 * A bounce buffer was used to handle the block operation @bio in @q.
251 * This occurs when hardware limitations prevent a direct transfer of
252 * data between the @bio data memory area and the IO device. Use of a
253 * bounce buffer requires extra copying of data and decreases
254 * performance.
255 */
256TRACE_EVENT(block_bio_bounce,
257
258 TP_PROTO(struct request_queue *q, struct bio *bio),
259
260 TP_ARGS(q, bio),
261
262 TP_STRUCT__entry(
263 __field( dev_t, dev )
264 __field( sector_t, sector )
265 __field( unsigned int, nr_sector )
266 __array( char, rwbs, RWBS_LEN )
267 __array( char, comm, TASK_COMM_LEN )
268 ),
269
270 TP_fast_assign(
271 __entry->dev = bio->bi_bdev ?
272 bio->bi_bdev->bd_dev : 0;
273 __entry->sector = bio->bi_iter.bi_sector;
274 __entry->nr_sector = bio_sectors(bio);
275 blk_fill_rwbs(__entry->rwbs, bio->bi_opf, bio->bi_iter.bi_size);
276 memcpy(__entry->comm, current->comm, TASK_COMM_LEN);
277 ),
278
279 TP_printk("%d,%d %s %llu + %u [%s]",
280 MAJOR(__entry->dev), MINOR(__entry->dev), __entry->rwbs,
281 (unsigned long long)__entry->sector,
282 __entry->nr_sector, __entry->comm)
283);
284
285/**
286 * block_bio_complete - completed all work on the block operation
287 * @q: queue holding the block operation
288 * @bio: block operation completed
289 * @error: io error value
290 *
291 * This tracepoint indicates there is no further work to do on this
292 * block IO operation @bio.
293 */
294TRACE_EVENT(block_bio_complete,
295
296 TP_PROTO(struct request_queue *q, struct bio *bio, int error),
297
298 TP_ARGS(q, bio, error),
299
300 TP_STRUCT__entry(
301 __field( dev_t, dev )
302 __field( sector_t, sector )
303 __field( unsigned, nr_sector )
304 __field( int, error )
305 __array( char, rwbs, RWBS_LEN)
306 ),
307
308 TP_fast_assign(
309 __entry->dev = bio->bi_bdev->bd_dev;
310 __entry->sector = bio->bi_iter.bi_sector;
311 __entry->nr_sector = bio_sectors(bio);
312 __entry->error = error;
313 blk_fill_rwbs(__entry->rwbs, bio->bi_opf, bio->bi_iter.bi_size);
314 ),
315
316 TP_printk("%d,%d %s %llu + %u [%d]",
317 MAJOR(__entry->dev), MINOR(__entry->dev), __entry->rwbs,
318 (unsigned long long)__entry->sector,
319 __entry->nr_sector, __entry->error)
320);
321
322DECLARE_EVENT_CLASS(block_bio_merge,
323
324 TP_PROTO(struct request_queue *q, struct request *rq, struct bio *bio),
325
326 TP_ARGS(q, rq, bio),
327
328 TP_STRUCT__entry(
329 __field( dev_t, dev )
330 __field( sector_t, sector )
331 __field( unsigned int, nr_sector )
332 __array( char, rwbs, RWBS_LEN )
333 __array( char, comm, TASK_COMM_LEN )
334 ),
335
336 TP_fast_assign(
337 __entry->dev = bio->bi_bdev->bd_dev;
338 __entry->sector = bio->bi_iter.bi_sector;
339 __entry->nr_sector = bio_sectors(bio);
340 blk_fill_rwbs(__entry->rwbs, bio->bi_opf, bio->bi_iter.bi_size);
341 memcpy(__entry->comm, current->comm, TASK_COMM_LEN);
342 ),
343
344 TP_printk("%d,%d %s %llu + %u [%s]",
345 MAJOR(__entry->dev), MINOR(__entry->dev), __entry->rwbs,
346 (unsigned long long)__entry->sector,
347 __entry->nr_sector, __entry->comm)
348);
349
350/**
351 * block_bio_backmerge - merging block operation to the end of an existing operation
352 * @q: queue holding operation
353 * @rq: request bio is being merged into
354 * @bio: new block operation to merge
355 *
356 * Merging block request @bio to the end of an existing block request
357 * in queue @q.
358 */
359DEFINE_EVENT(block_bio_merge, block_bio_backmerge,
360
361 TP_PROTO(struct request_queue *q, struct request *rq, struct bio *bio),
362
363 TP_ARGS(q, rq, bio)
364);
365
366/**
367 * block_bio_frontmerge - merging block operation to the beginning of an existing operation
368 * @q: queue holding operation
369 * @rq: request bio is being merged into
370 * @bio: new block operation to merge
371 *
372 * Merging block IO operation @bio to the beginning of an existing block
373 * operation in queue @q.
374 */
375DEFINE_EVENT(block_bio_merge, block_bio_frontmerge,
376
377 TP_PROTO(struct request_queue *q, struct request *rq, struct bio *bio),
378
379 TP_ARGS(q, rq, bio)
380);
381
382/**
383 * block_bio_queue - putting new block IO operation in queue
384 * @q: queue holding operation
385 * @bio: new block operation
386 *
387 * About to place the block IO operation @bio into queue @q.
388 */
389TRACE_EVENT(block_bio_queue,
390
391 TP_PROTO(struct request_queue *q, struct bio *bio),
392
393 TP_ARGS(q, bio),
394
395 TP_STRUCT__entry(
396 __field( dev_t, dev )
397 __field( sector_t, sector )
398 __field( unsigned int, nr_sector )
399 __array( char, rwbs, RWBS_LEN )
400 __array( char, comm, TASK_COMM_LEN )
401 ),
402
403 TP_fast_assign(
404 __entry->dev = bio->bi_bdev->bd_dev;
405 __entry->sector = bio->bi_iter.bi_sector;
406 __entry->nr_sector = bio_sectors(bio);
407 blk_fill_rwbs(__entry->rwbs, bio->bi_opf, bio->bi_iter.bi_size);
408 memcpy(__entry->comm, current->comm, TASK_COMM_LEN);
409 ),
410
411 TP_printk("%d,%d %s %llu + %u [%s]",
412 MAJOR(__entry->dev), MINOR(__entry->dev), __entry->rwbs,
413 (unsigned long long)__entry->sector,
414 __entry->nr_sector, __entry->comm)
415);
416
417DECLARE_EVENT_CLASS(block_get_rq,
418
419 TP_PROTO(struct request_queue *q, struct bio *bio, int rw),
420
421 TP_ARGS(q, bio, rw),
422
423 TP_STRUCT__entry(
424 __field( dev_t, dev )
425 __field( sector_t, sector )
426 __field( unsigned int, nr_sector )
427 __array( char, rwbs, RWBS_LEN )
428 __array( char, comm, TASK_COMM_LEN )
429 ),
430
431 TP_fast_assign(
432 __entry->dev = bio ? bio->bi_bdev->bd_dev : 0;
433 __entry->sector = bio ? bio->bi_iter.bi_sector : 0;
434 __entry->nr_sector = bio ? bio_sectors(bio) : 0;
435 blk_fill_rwbs(__entry->rwbs,
436 bio ? bio->bi_opf : 0, __entry->nr_sector);
437 memcpy(__entry->comm, current->comm, TASK_COMM_LEN);
438 ),
439
440 TP_printk("%d,%d %s %llu + %u [%s]",
441 MAJOR(__entry->dev), MINOR(__entry->dev), __entry->rwbs,
442 (unsigned long long)__entry->sector,
443 __entry->nr_sector, __entry->comm)
444);
445
446/**
447 * block_getrq - get a free request entry in queue for block IO operations
448 * @q: queue for operations
449 * @bio: pending block IO operation
450 * @rw: low bit indicates a read (%0) or a write (%1)
451 *
452 * A request struct for queue @q has been allocated to handle the
453 * block IO operation @bio.
454 */
455DEFINE_EVENT(block_get_rq, block_getrq,
456
457 TP_PROTO(struct request_queue *q, struct bio *bio, int rw),
458
459 TP_ARGS(q, bio, rw)
460);
461
462/**
463 * block_sleeprq - waiting to get a free request entry in queue for block IO operation
464 * @q: queue for operation
465 * @bio: pending block IO operation
466 * @rw: low bit indicates a read (%0) or a write (%1)
467 *
468 * In the case where a request struct cannot be provided for queue @q
469 * the process needs to wait for an request struct to become
470 * available. This tracepoint event is generated each time the
471 * process goes to sleep waiting for request struct become available.
472 */
473DEFINE_EVENT(block_get_rq, block_sleeprq,
474
475 TP_PROTO(struct request_queue *q, struct bio *bio, int rw),
476
477 TP_ARGS(q, bio, rw)
478);
479
480/**
481 * block_plug - keep operations requests in request queue
482 * @q: request queue to plug
483 *
484 * Plug the request queue @q. Do not allow block operation requests
485 * to be sent to the device driver. Instead, accumulate requests in
486 * the queue to improve throughput performance of the block device.
487 */
488TRACE_EVENT(block_plug,
489
490 TP_PROTO(struct request_queue *q),
491
492 TP_ARGS(q),
493
494 TP_STRUCT__entry(
495 __array( char, comm, TASK_COMM_LEN )
496 ),
497
498 TP_fast_assign(
499 memcpy(__entry->comm, current->comm, TASK_COMM_LEN);
500 ),
501
502 TP_printk("[%s]", __entry->comm)
503);
504
505DECLARE_EVENT_CLASS(block_unplug,
506
507 TP_PROTO(struct request_queue *q, unsigned int depth, bool explicit),
508
509 TP_ARGS(q, depth, explicit),
510
511 TP_STRUCT__entry(
512 __field( int, nr_rq )
513 __array( char, comm, TASK_COMM_LEN )
514 ),
515
516 TP_fast_assign(
517 __entry->nr_rq = depth;
518 memcpy(__entry->comm, current->comm, TASK_COMM_LEN);
519 ),
520
521 TP_printk("[%s] %d", __entry->comm, __entry->nr_rq)
522);
523
524/**
525 * block_unplug - release of operations requests in request queue
526 * @q: request queue to unplug
527 * @depth: number of requests just added to the queue
528 * @explicit: whether this was an explicit unplug, or one from schedule()
529 *
530 * Unplug request queue @q because device driver is scheduled to work
531 * on elements in the request queue.
532 */
533DEFINE_EVENT(block_unplug, block_unplug,
534
535 TP_PROTO(struct request_queue *q, unsigned int depth, bool explicit),
536
537 TP_ARGS(q, depth, explicit)
538);
539
540/**
541 * block_split - split a single bio struct into two bio structs
542 * @q: queue containing the bio
543 * @bio: block operation being split
544 * @new_sector: The starting sector for the new bio
545 *
546 * The bio request @bio in request queue @q needs to be split into two
547 * bio requests. The newly created @bio request starts at
548 * @new_sector. This split may be required due to hardware limitation
549 * such as operation crossing device boundaries in a RAID system.
550 */
551TRACE_EVENT(block_split,
552
553 TP_PROTO(struct request_queue *q, struct bio *bio,
554 unsigned int new_sector),
555
556 TP_ARGS(q, bio, new_sector),
557
558 TP_STRUCT__entry(
559 __field( dev_t, dev )
560 __field( sector_t, sector )
561 __field( sector_t, new_sector )
562 __array( char, rwbs, RWBS_LEN )
563 __array( char, comm, TASK_COMM_LEN )
564 ),
565
566 TP_fast_assign(
567 __entry->dev = bio->bi_bdev->bd_dev;
568 __entry->sector = bio->bi_iter.bi_sector;
569 __entry->new_sector = new_sector;
570 blk_fill_rwbs(__entry->rwbs, bio->bi_opf, bio->bi_iter.bi_size);
571 memcpy(__entry->comm, current->comm, TASK_COMM_LEN);
572 ),
573
574 TP_printk("%d,%d %s %llu / %llu [%s]",
575 MAJOR(__entry->dev), MINOR(__entry->dev), __entry->rwbs,
576 (unsigned long long)__entry->sector,
577 (unsigned long long)__entry->new_sector,
578 __entry->comm)
579);
580
581/**
582 * block_bio_remap - map request for a logical device to the raw device
583 * @q: queue holding the operation
584 * @bio: revised operation
585 * @dev: device for the operation
586 * @from: original sector for the operation
587 *
588 * An operation for a logical device has been mapped to the
589 * raw block device.
590 */
591TRACE_EVENT(block_bio_remap,
592
593 TP_PROTO(struct request_queue *q, struct bio *bio, dev_t dev,
594 sector_t from),
595
596 TP_ARGS(q, bio, dev, from),
597
598 TP_STRUCT__entry(
599 __field( dev_t, dev )
600 __field( sector_t, sector )
601 __field( unsigned int, nr_sector )
602 __field( dev_t, old_dev )
603 __field( sector_t, old_sector )
604 __array( char, rwbs, RWBS_LEN)
605 ),
606
607 TP_fast_assign(
608 __entry->dev = bio->bi_bdev->bd_dev;
609 __entry->sector = bio->bi_iter.bi_sector;
610 __entry->nr_sector = bio_sectors(bio);
611 __entry->old_dev = dev;
612 __entry->old_sector = from;
613 blk_fill_rwbs(__entry->rwbs, bio->bi_opf, bio->bi_iter.bi_size);
614 ),
615
616 TP_printk("%d,%d %s %llu + %u <- (%d,%d) %llu",
617 MAJOR(__entry->dev), MINOR(__entry->dev), __entry->rwbs,
618 (unsigned long long)__entry->sector,
619 __entry->nr_sector,
620 MAJOR(__entry->old_dev), MINOR(__entry->old_dev),
621 (unsigned long long)__entry->old_sector)
622);
623
624/**
625 * block_rq_remap - map request for a block operation request
626 * @q: queue holding the operation
627 * @rq: block IO operation request
628 * @dev: device for the operation
629 * @from: original sector for the operation
630 *
631 * The block operation request @rq in @q has been remapped. The block
632 * operation request @rq holds the current information and @from hold
633 * the original sector.
634 */
635TRACE_EVENT(block_rq_remap,
636
637 TP_PROTO(struct request_queue *q, struct request *rq, dev_t dev,
638 sector_t from),
639
640 TP_ARGS(q, rq, dev, from),
641
642 TP_STRUCT__entry(
643 __field( dev_t, dev )
644 __field( sector_t, sector )
645 __field( unsigned int, nr_sector )
646 __field( dev_t, old_dev )
647 __field( sector_t, old_sector )
648 __field( unsigned int, nr_bios )
649 __array( char, rwbs, RWBS_LEN)
650 ),
651
652 TP_fast_assign(
653 __entry->dev = disk_devt(rq->rq_disk);
654 __entry->sector = blk_rq_pos(rq);
655 __entry->nr_sector = blk_rq_sectors(rq);
656 __entry->old_dev = dev;
657 __entry->old_sector = from;
658 __entry->nr_bios = blk_rq_count_bios(rq);
659 blk_fill_rwbs(__entry->rwbs, rq->cmd_flags, blk_rq_bytes(rq));
660 ),
661
662 TP_printk("%d,%d %s %llu + %u <- (%d,%d) %llu %u",
663 MAJOR(__entry->dev), MINOR(__entry->dev), __entry->rwbs,
664 (unsigned long long)__entry->sector,
665 __entry->nr_sector,
666 MAJOR(__entry->old_dev), MINOR(__entry->old_dev),
667 (unsigned long long)__entry->old_sector, __entry->nr_bios)
668);
669
670#endif /* _TRACE_BLOCK_H */
671
672/* This part must be outside protection */
673#include <trace/define_trace.h>
674