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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
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