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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/* SPDX-License-Identifier: GPL-2.0 */
2#undef TRACE_SYSTEM
3#define TRACE_SYSTEM block
4
5#if !defined(_TRACE_BLOCK_H) || defined(TRACE_HEADER_MULTI_READ)
6#define _TRACE_BLOCK_H
7
8#include <linux/blktrace_api.h>
9#include <linux/blkdev.h>
10#include <linux/buffer_head.h>
11#include <linux/tracepoint.h>
12
13#define RWBS_LEN 8
14
15DECLARE_EVENT_CLASS(block_buffer,
16
17 TP_PROTO(struct buffer_head *bh),
18
19 TP_ARGS(bh),
20
21 TP_STRUCT__entry (
22 __field( dev_t, dev )
23 __field( sector_t, sector )
24 __field( size_t, size )
25 ),
26
27 TP_fast_assign(
28 __entry->dev = bh->b_bdev->bd_dev;
29 __entry->sector = bh->b_blocknr;
30 __entry->size = bh->b_size;
31 ),
32
33 TP_printk("%d,%d sector=%llu size=%zu",
34 MAJOR(__entry->dev), MINOR(__entry->dev),
35 (unsigned long long)__entry->sector, __entry->size
36 )
37);
38
39/**
40 * block_touch_buffer - mark a buffer accessed
41 * @bh: buffer_head being touched
42 *
43 * Called from touch_buffer().
44 */
45DEFINE_EVENT(block_buffer, block_touch_buffer,
46
47 TP_PROTO(struct buffer_head *bh),
48
49 TP_ARGS(bh)
50);
51
52/**
53 * block_dirty_buffer - mark a buffer dirty
54 * @bh: buffer_head being dirtied
55 *
56 * Called from mark_buffer_dirty().
57 */
58DEFINE_EVENT(block_buffer, block_dirty_buffer,
59
60 TP_PROTO(struct buffer_head *bh),
61
62 TP_ARGS(bh)
63);
64
65/**
66 * block_rq_requeue - place block IO request back on a queue
67 * @q: queue holding operation
68 * @rq: block IO operation request
69 *
70 * The block operation request @rq is being placed back into queue
71 * @q. For some reason the request was not completed and needs to be
72 * put back in the queue.
73 */
74TRACE_EVENT(block_rq_requeue,
75
76 TP_PROTO(struct request_queue *q, struct request *rq),
77
78 TP_ARGS(q, rq),
79
80 TP_STRUCT__entry(
81 __field( dev_t, dev )
82 __field( sector_t, sector )
83 __field( unsigned int, nr_sector )
84 __array( char, rwbs, RWBS_LEN )
85 __dynamic_array( char, cmd, 1 )
86 ),
87
88 TP_fast_assign(
89 __entry->dev = rq->rq_disk ? disk_devt(rq->rq_disk) : 0;
90 __entry->sector = blk_rq_trace_sector(rq);
91 __entry->nr_sector = blk_rq_trace_nr_sectors(rq);
92
93 blk_fill_rwbs(__entry->rwbs, rq->cmd_flags, blk_rq_bytes(rq));
94 __get_str(cmd)[0] = '\0';
95 ),
96
97 TP_printk("%d,%d %s (%s) %llu + %u [%d]",
98 MAJOR(__entry->dev), MINOR(__entry->dev),
99 __entry->rwbs, __get_str(cmd),
100 (unsigned long long)__entry->sector,
101 __entry->nr_sector, 0)
102);
103
104/**
105 * block_rq_complete - block IO operation completed by device driver
106 * @rq: block operations request
107 * @error: status code
108 * @nr_bytes: number of completed bytes
109 *
110 * The block_rq_complete tracepoint event indicates that some portion
111 * of operation request has been completed by the device driver. If
112 * the @rq->bio is %NULL, then there is absolutely no additional work to
113 * do for the request. If @rq->bio is non-NULL then there is
114 * additional work required to complete the request.
115 */
116TRACE_EVENT(block_rq_complete,
117
118 TP_PROTO(struct request *rq, int error, unsigned int nr_bytes),
119
120 TP_ARGS(rq, error, nr_bytes),
121
122 TP_STRUCT__entry(
123 __field( dev_t, dev )
124 __field( sector_t, sector )
125 __field( unsigned int, nr_sector )
126 __field( int, error )
127 __array( char, rwbs, RWBS_LEN )
128 __dynamic_array( char, cmd, 1 )
129 ),
130
131 TP_fast_assign(
132 __entry->dev = rq->rq_disk ? disk_devt(rq->rq_disk) : 0;
133 __entry->sector = blk_rq_pos(rq);
134 __entry->nr_sector = nr_bytes >> 9;
135 __entry->error = error;
136
137 blk_fill_rwbs(__entry->rwbs, rq->cmd_flags, nr_bytes);
138 __get_str(cmd)[0] = '\0';
139 ),
140
141 TP_printk("%d,%d %s (%s) %llu + %u [%d]",
142 MAJOR(__entry->dev), MINOR(__entry->dev),
143 __entry->rwbs, __get_str(cmd),
144 (unsigned long long)__entry->sector,
145 __entry->nr_sector, __entry->error)
146);
147
148DECLARE_EVENT_CLASS(block_rq,
149
150 TP_PROTO(struct request_queue *q, struct request *rq),
151
152 TP_ARGS(q, rq),
153
154 TP_STRUCT__entry(
155 __field( dev_t, dev )
156 __field( sector_t, sector )
157 __field( unsigned int, nr_sector )
158 __field( unsigned int, bytes )
159 __array( char, rwbs, RWBS_LEN )
160 __array( char, comm, TASK_COMM_LEN )
161 __dynamic_array( char, cmd, 1 )
162 ),
163
164 TP_fast_assign(
165 __entry->dev = rq->rq_disk ? disk_devt(rq->rq_disk) : 0;
166 __entry->sector = blk_rq_trace_sector(rq);
167 __entry->nr_sector = blk_rq_trace_nr_sectors(rq);
168 __entry->bytes = blk_rq_bytes(rq);
169
170 blk_fill_rwbs(__entry->rwbs, rq->cmd_flags, blk_rq_bytes(rq));
171 __get_str(cmd)[0] = '\0';
172 memcpy(__entry->comm, current->comm, TASK_COMM_LEN);
173 ),
174
175 TP_printk("%d,%d %s %u (%s) %llu + %u [%s]",
176 MAJOR(__entry->dev), MINOR(__entry->dev),
177 __entry->rwbs, __entry->bytes, __get_str(cmd),
178 (unsigned long long)__entry->sector,
179 __entry->nr_sector, __entry->comm)
180);
181
182/**
183 * block_rq_insert - insert block operation request into queue
184 * @q: target queue
185 * @rq: block IO operation request
186 *
187 * Called immediately before block operation request @rq is inserted
188 * into queue @q. The fields in the operation request @rq struct can
189 * be examined to determine which device and sectors the pending
190 * operation would access.
191 */
192DEFINE_EVENT(block_rq, block_rq_insert,
193
194 TP_PROTO(struct request_queue *q, struct request *rq),
195
196 TP_ARGS(q, rq)
197);
198
199/**
200 * block_rq_issue - issue pending block IO request operation to device driver
201 * @q: queue holding operation
202 * @rq: block IO operation operation request
203 *
204 * Called when block operation request @rq from queue @q is sent to a
205 * device driver for processing.
206 */
207DEFINE_EVENT(block_rq, block_rq_issue,
208
209 TP_PROTO(struct request_queue *q, struct request *rq),
210
211 TP_ARGS(q, rq)
212);
213
214/**
215 * block_rq_merge - merge request with another one in the elevator
216 * @q: queue holding operation
217 * @rq: block IO operation operation request
218 *
219 * Called when block operation request @rq from queue @q is merged to another
220 * request queued in the elevator.
221 */
222DEFINE_EVENT(block_rq, block_rq_merge,
223
224 TP_PROTO(struct request_queue *q, struct request *rq),
225
226 TP_ARGS(q, rq)
227);
228
229/**
230 * block_bio_bounce - used bounce buffer when processing block operation
231 * @q: queue holding the block operation
232 * @bio: block operation
233 *
234 * A bounce buffer was used to handle the block operation @bio in @q.
235 * This occurs when hardware limitations prevent a direct transfer of
236 * data between the @bio data memory area and the IO device. Use of a
237 * bounce buffer requires extra copying of data and decreases
238 * performance.
239 */
240TRACE_EVENT(block_bio_bounce,
241
242 TP_PROTO(struct request_queue *q, struct bio *bio),
243
244 TP_ARGS(q, bio),
245
246 TP_STRUCT__entry(
247 __field( dev_t, dev )
248 __field( sector_t, sector )
249 __field( unsigned int, nr_sector )
250 __array( char, rwbs, RWBS_LEN )
251 __array( char, comm, TASK_COMM_LEN )
252 ),
253
254 TP_fast_assign(
255 __entry->dev = bio_dev(bio);
256 __entry->sector = bio->bi_iter.bi_sector;
257 __entry->nr_sector = bio_sectors(bio);
258 blk_fill_rwbs(__entry->rwbs, bio->bi_opf, bio->bi_iter.bi_size);
259 memcpy(__entry->comm, current->comm, TASK_COMM_LEN);
260 ),
261
262 TP_printk("%d,%d %s %llu + %u [%s]",
263 MAJOR(__entry->dev), MINOR(__entry->dev), __entry->rwbs,
264 (unsigned long long)__entry->sector,
265 __entry->nr_sector, __entry->comm)
266);
267
268/**
269 * block_bio_complete - completed all work on the block operation
270 * @q: queue holding the block operation
271 * @bio: block operation completed
272 *
273 * This tracepoint indicates there is no further work to do on this
274 * block IO operation @bio.
275 */
276TRACE_EVENT(block_bio_complete,
277
278 TP_PROTO(struct request_queue *q, struct bio *bio),
279
280 TP_ARGS(q, bio),
281
282 TP_STRUCT__entry(
283 __field( dev_t, dev )
284 __field( sector_t, sector )
285 __field( unsigned, nr_sector )
286 __field( int, error )
287 __array( char, rwbs, RWBS_LEN)
288 ),
289
290 TP_fast_assign(
291 __entry->dev = bio_dev(bio);
292 __entry->sector = bio->bi_iter.bi_sector;
293 __entry->nr_sector = bio_sectors(bio);
294 __entry->error = blk_status_to_errno(bio->bi_status);
295 blk_fill_rwbs(__entry->rwbs, bio->bi_opf, bio->bi_iter.bi_size);
296 ),
297
298 TP_printk("%d,%d %s %llu + %u [%d]",
299 MAJOR(__entry->dev), MINOR(__entry->dev), __entry->rwbs,
300 (unsigned long long)__entry->sector,
301 __entry->nr_sector, __entry->error)
302);
303
304DECLARE_EVENT_CLASS(block_bio_merge,
305
306 TP_PROTO(struct request_queue *q, struct request *rq, struct bio *bio),
307
308 TP_ARGS(q, rq, bio),
309
310 TP_STRUCT__entry(
311 __field( dev_t, dev )
312 __field( sector_t, sector )
313 __field( unsigned int, nr_sector )
314 __array( char, rwbs, RWBS_LEN )
315 __array( char, comm, TASK_COMM_LEN )
316 ),
317
318 TP_fast_assign(
319 __entry->dev = bio_dev(bio);
320 __entry->sector = bio->bi_iter.bi_sector;
321 __entry->nr_sector = bio_sectors(bio);
322 blk_fill_rwbs(__entry->rwbs, bio->bi_opf, bio->bi_iter.bi_size);
323 memcpy(__entry->comm, current->comm, TASK_COMM_LEN);
324 ),
325
326 TP_printk("%d,%d %s %llu + %u [%s]",
327 MAJOR(__entry->dev), MINOR(__entry->dev), __entry->rwbs,
328 (unsigned long long)__entry->sector,
329 __entry->nr_sector, __entry->comm)
330);
331
332/**
333 * block_bio_backmerge - merging block operation to the end of an existing operation
334 * @q: queue holding operation
335 * @rq: request bio is being merged into
336 * @bio: new block operation to merge
337 *
338 * Merging block request @bio to the end of an existing block request
339 * in queue @q.
340 */
341DEFINE_EVENT(block_bio_merge, block_bio_backmerge,
342
343 TP_PROTO(struct request_queue *q, struct request *rq, struct bio *bio),
344
345 TP_ARGS(q, rq, bio)
346);
347
348/**
349 * block_bio_frontmerge - merging block operation to the beginning of an existing operation
350 * @q: queue holding operation
351 * @rq: request bio is being merged into
352 * @bio: new block operation to merge
353 *
354 * Merging block IO operation @bio to the beginning of an existing block
355 * operation in queue @q.
356 */
357DEFINE_EVENT(block_bio_merge, block_bio_frontmerge,
358
359 TP_PROTO(struct request_queue *q, struct request *rq, struct bio *bio),
360
361 TP_ARGS(q, rq, bio)
362);
363
364/**
365 * block_bio_queue - putting new block IO operation in queue
366 * @q: queue holding operation
367 * @bio: new block operation
368 *
369 * About to place the block IO operation @bio into queue @q.
370 */
371TRACE_EVENT(block_bio_queue,
372
373 TP_PROTO(struct request_queue *q, struct bio *bio),
374
375 TP_ARGS(q, bio),
376
377 TP_STRUCT__entry(
378 __field( dev_t, dev )
379 __field( sector_t, sector )
380 __field( unsigned int, nr_sector )
381 __array( char, rwbs, RWBS_LEN )
382 __array( char, comm, TASK_COMM_LEN )
383 ),
384
385 TP_fast_assign(
386 __entry->dev = bio_dev(bio);
387 __entry->sector = bio->bi_iter.bi_sector;
388 __entry->nr_sector = bio_sectors(bio);
389 blk_fill_rwbs(__entry->rwbs, bio->bi_opf, bio->bi_iter.bi_size);
390 memcpy(__entry->comm, current->comm, TASK_COMM_LEN);
391 ),
392
393 TP_printk("%d,%d %s %llu + %u [%s]",
394 MAJOR(__entry->dev), MINOR(__entry->dev), __entry->rwbs,
395 (unsigned long long)__entry->sector,
396 __entry->nr_sector, __entry->comm)
397);
398
399DECLARE_EVENT_CLASS(block_get_rq,
400
401 TP_PROTO(struct request_queue *q, struct bio *bio, int rw),
402
403 TP_ARGS(q, bio, rw),
404
405 TP_STRUCT__entry(
406 __field( dev_t, dev )
407 __field( sector_t, sector )
408 __field( unsigned int, nr_sector )
409 __array( char, rwbs, RWBS_LEN )
410 __array( char, comm, TASK_COMM_LEN )
411 ),
412
413 TP_fast_assign(
414 __entry->dev = bio ? bio_dev(bio) : 0;
415 __entry->sector = bio ? bio->bi_iter.bi_sector : 0;
416 __entry->nr_sector = bio ? bio_sectors(bio) : 0;
417 blk_fill_rwbs(__entry->rwbs,
418 bio ? bio->bi_opf : 0, __entry->nr_sector);
419 memcpy(__entry->comm, current->comm, TASK_COMM_LEN);
420 ),
421
422 TP_printk("%d,%d %s %llu + %u [%s]",
423 MAJOR(__entry->dev), MINOR(__entry->dev), __entry->rwbs,
424 (unsigned long long)__entry->sector,
425 __entry->nr_sector, __entry->comm)
426);
427
428/**
429 * block_getrq - get a free request entry in queue for block IO operations
430 * @q: queue for operations
431 * @bio: pending block IO operation (can be %NULL)
432 * @rw: low bit indicates a read (%0) or a write (%1)
433 *
434 * A request struct for queue @q has been allocated to handle the
435 * block IO operation @bio.
436 */
437DEFINE_EVENT(block_get_rq, block_getrq,
438
439 TP_PROTO(struct request_queue *q, struct bio *bio, int rw),
440
441 TP_ARGS(q, bio, rw)
442);
443
444/**
445 * block_sleeprq - waiting to get a free request entry in queue for block IO operation
446 * @q: queue for operation
447 * @bio: pending block IO operation (can be %NULL)
448 * @rw: low bit indicates a read (%0) or a write (%1)
449 *
450 * In the case where a request struct cannot be provided for queue @q
451 * the process needs to wait for an request struct to become
452 * available. This tracepoint event is generated each time the
453 * process goes to sleep waiting for request struct become available.
454 */
455DEFINE_EVENT(block_get_rq, block_sleeprq,
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_plug - keep operations requests in request queue
464 * @q: request queue to plug
465 *
466 * Plug the request queue @q. Do not allow block operation requests
467 * to be sent to the device driver. Instead, accumulate requests in
468 * the queue to improve throughput performance of the block device.
469 */
470TRACE_EVENT(block_plug,
471
472 TP_PROTO(struct request_queue *q),
473
474 TP_ARGS(q),
475
476 TP_STRUCT__entry(
477 __array( char, comm, TASK_COMM_LEN )
478 ),
479
480 TP_fast_assign(
481 memcpy(__entry->comm, current->comm, TASK_COMM_LEN);
482 ),
483
484 TP_printk("[%s]", __entry->comm)
485);
486
487DECLARE_EVENT_CLASS(block_unplug,
488
489 TP_PROTO(struct request_queue *q, unsigned int depth, bool explicit),
490
491 TP_ARGS(q, depth, explicit),
492
493 TP_STRUCT__entry(
494 __field( int, nr_rq )
495 __array( char, comm, TASK_COMM_LEN )
496 ),
497
498 TP_fast_assign(
499 __entry->nr_rq = depth;
500 memcpy(__entry->comm, current->comm, TASK_COMM_LEN);
501 ),
502
503 TP_printk("[%s] %d", __entry->comm, __entry->nr_rq)
504);
505
506/**
507 * block_unplug - release of operations requests in request queue
508 * @q: request queue to unplug
509 * @depth: number of requests just added to the queue
510 * @explicit: whether this was an explicit unplug, or one from schedule()
511 *
512 * Unplug request queue @q because device driver is scheduled to work
513 * on elements in the request queue.
514 */
515DEFINE_EVENT(block_unplug, block_unplug,
516
517 TP_PROTO(struct request_queue *q, unsigned int depth, bool explicit),
518
519 TP_ARGS(q, depth, explicit)
520);
521
522/**
523 * block_split - split a single bio struct into two bio structs
524 * @q: queue containing the bio
525 * @bio: block operation being split
526 * @new_sector: The starting sector for the new bio
527 *
528 * The bio request @bio in request queue @q needs to be split into two
529 * bio requests. The newly created @bio request starts at
530 * @new_sector. This split may be required due to hardware limitation
531 * such as operation crossing device boundaries in a RAID system.
532 */
533TRACE_EVENT(block_split,
534
535 TP_PROTO(struct request_queue *q, struct bio *bio,
536 unsigned int new_sector),
537
538 TP_ARGS(q, bio, new_sector),
539
540 TP_STRUCT__entry(
541 __field( dev_t, dev )
542 __field( sector_t, sector )
543 __field( sector_t, new_sector )
544 __array( char, rwbs, RWBS_LEN )
545 __array( char, comm, TASK_COMM_LEN )
546 ),
547
548 TP_fast_assign(
549 __entry->dev = bio_dev(bio);
550 __entry->sector = bio->bi_iter.bi_sector;
551 __entry->new_sector = new_sector;
552 blk_fill_rwbs(__entry->rwbs, bio->bi_opf, bio->bi_iter.bi_size);
553 memcpy(__entry->comm, current->comm, TASK_COMM_LEN);
554 ),
555
556 TP_printk("%d,%d %s %llu / %llu [%s]",
557 MAJOR(__entry->dev), MINOR(__entry->dev), __entry->rwbs,
558 (unsigned long long)__entry->sector,
559 (unsigned long long)__entry->new_sector,
560 __entry->comm)
561);
562
563/**
564 * block_bio_remap - map request for a logical device to the raw device
565 * @q: queue holding the operation
566 * @bio: revised operation
567 * @dev: device for the operation
568 * @from: original sector for the operation
569 *
570 * An operation for a logical device has been mapped to the
571 * raw block device.
572 */
573TRACE_EVENT(block_bio_remap,
574
575 TP_PROTO(struct request_queue *q, struct bio *bio, dev_t dev,
576 sector_t from),
577
578 TP_ARGS(q, bio, dev, from),
579
580 TP_STRUCT__entry(
581 __field( dev_t, dev )
582 __field( sector_t, sector )
583 __field( unsigned int, nr_sector )
584 __field( dev_t, old_dev )
585 __field( sector_t, old_sector )
586 __array( char, rwbs, RWBS_LEN)
587 ),
588
589 TP_fast_assign(
590 __entry->dev = bio_dev(bio);
591 __entry->sector = bio->bi_iter.bi_sector;
592 __entry->nr_sector = bio_sectors(bio);
593 __entry->old_dev = dev;
594 __entry->old_sector = from;
595 blk_fill_rwbs(__entry->rwbs, bio->bi_opf, bio->bi_iter.bi_size);
596 ),
597
598 TP_printk("%d,%d %s %llu + %u <- (%d,%d) %llu",
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)
604);
605
606/**
607 * block_rq_remap - map request for a block operation request
608 * @q: queue holding the operation
609 * @rq: block IO operation request
610 * @dev: device for the operation
611 * @from: original sector for the operation
612 *
613 * The block operation request @rq in @q has been remapped. The block
614 * operation request @rq holds the current information and @from hold
615 * the original sector.
616 */
617TRACE_EVENT(block_rq_remap,
618
619 TP_PROTO(struct request_queue *q, struct request *rq, dev_t dev,
620 sector_t from),
621
622 TP_ARGS(q, rq, dev, from),
623
624 TP_STRUCT__entry(
625 __field( dev_t, dev )
626 __field( sector_t, sector )
627 __field( unsigned int, nr_sector )
628 __field( dev_t, old_dev )
629 __field( sector_t, old_sector )
630 __field( unsigned int, nr_bios )
631 __array( char, rwbs, RWBS_LEN)
632 ),
633
634 TP_fast_assign(
635 __entry->dev = disk_devt(rq->rq_disk);
636 __entry->sector = blk_rq_pos(rq);
637 __entry->nr_sector = blk_rq_sectors(rq);
638 __entry->old_dev = dev;
639 __entry->old_sector = from;
640 __entry->nr_bios = blk_rq_count_bios(rq);
641 blk_fill_rwbs(__entry->rwbs, rq->cmd_flags, blk_rq_bytes(rq));
642 ),
643
644 TP_printk("%d,%d %s %llu + %u <- (%d,%d) %llu %u",
645 MAJOR(__entry->dev), MINOR(__entry->dev), __entry->rwbs,
646 (unsigned long long)__entry->sector,
647 __entry->nr_sector,
648 MAJOR(__entry->old_dev), MINOR(__entry->old_dev),
649 (unsigned long long)__entry->old_sector, __entry->nr_bios)
650);
651
652#endif /* _TRACE_BLOCK_H */
653
654/* This part must be outside protection */
655#include <trace/define_trace.h>
656