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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 * @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_bio_bounce - used bounce buffer when processing block operation
216 * @q: queue holding the block operation
217 * @bio: block operation
218 *
219 * A bounce buffer was used to handle the block operation @bio in @q.
220 * This occurs when hardware limitations prevent a direct transfer of
221 * data between the @bio data memory area and the IO device. Use of a
222 * bounce buffer requires extra copying of data and decreases
223 * performance.
224 */
225TRACE_EVENT(block_bio_bounce,
226
227 TP_PROTO(struct request_queue *q, struct bio *bio),
228
229 TP_ARGS(q, bio),
230
231 TP_STRUCT__entry(
232 __field( dev_t, dev )
233 __field( sector_t, sector )
234 __field( unsigned int, nr_sector )
235 __array( char, rwbs, RWBS_LEN )
236 __array( char, comm, TASK_COMM_LEN )
237 ),
238
239 TP_fast_assign(
240 __entry->dev = bio_dev(bio);
241 __entry->sector = bio->bi_iter.bi_sector;
242 __entry->nr_sector = bio_sectors(bio);
243 blk_fill_rwbs(__entry->rwbs, bio->bi_opf, bio->bi_iter.bi_size);
244 memcpy(__entry->comm, current->comm, TASK_COMM_LEN);
245 ),
246
247 TP_printk("%d,%d %s %llu + %u [%s]",
248 MAJOR(__entry->dev), MINOR(__entry->dev), __entry->rwbs,
249 (unsigned long long)__entry->sector,
250 __entry->nr_sector, __entry->comm)
251);
252
253/**
254 * block_bio_complete - completed all work on the block operation
255 * @q: queue holding the block operation
256 * @bio: block operation completed
257 * @error: io error value
258 *
259 * This tracepoint indicates there is no further work to do on this
260 * block IO operation @bio.
261 */
262TRACE_EVENT(block_bio_complete,
263
264 TP_PROTO(struct request_queue *q, struct bio *bio, int error),
265
266 TP_ARGS(q, bio, error),
267
268 TP_STRUCT__entry(
269 __field( dev_t, dev )
270 __field( sector_t, sector )
271 __field( unsigned, nr_sector )
272 __field( int, error )
273 __array( char, rwbs, RWBS_LEN)
274 ),
275
276 TP_fast_assign(
277 __entry->dev = bio_dev(bio);
278 __entry->sector = bio->bi_iter.bi_sector;
279 __entry->nr_sector = bio_sectors(bio);
280 __entry->error = error;
281 blk_fill_rwbs(__entry->rwbs, bio->bi_opf, bio->bi_iter.bi_size);
282 ),
283
284 TP_printk("%d,%d %s %llu + %u [%d]",
285 MAJOR(__entry->dev), MINOR(__entry->dev), __entry->rwbs,
286 (unsigned long long)__entry->sector,
287 __entry->nr_sector, __entry->error)
288);
289
290DECLARE_EVENT_CLASS(block_bio_merge,
291
292 TP_PROTO(struct request_queue *q, struct request *rq, struct bio *bio),
293
294 TP_ARGS(q, rq, bio),
295
296 TP_STRUCT__entry(
297 __field( dev_t, dev )
298 __field( sector_t, sector )
299 __field( unsigned int, nr_sector )
300 __array( char, rwbs, RWBS_LEN )
301 __array( char, comm, TASK_COMM_LEN )
302 ),
303
304 TP_fast_assign(
305 __entry->dev = bio_dev(bio);
306 __entry->sector = bio->bi_iter.bi_sector;
307 __entry->nr_sector = bio_sectors(bio);
308 blk_fill_rwbs(__entry->rwbs, bio->bi_opf, bio->bi_iter.bi_size);
309 memcpy(__entry->comm, current->comm, TASK_COMM_LEN);
310 ),
311
312 TP_printk("%d,%d %s %llu + %u [%s]",
313 MAJOR(__entry->dev), MINOR(__entry->dev), __entry->rwbs,
314 (unsigned long long)__entry->sector,
315 __entry->nr_sector, __entry->comm)
316);
317
318/**
319 * block_bio_backmerge - merging block operation to the end of an existing operation
320 * @q: queue holding operation
321 * @rq: request bio is being merged into
322 * @bio: new block operation to merge
323 *
324 * Merging block request @bio to the end of an existing block request
325 * in queue @q.
326 */
327DEFINE_EVENT(block_bio_merge, block_bio_backmerge,
328
329 TP_PROTO(struct request_queue *q, struct request *rq, struct bio *bio),
330
331 TP_ARGS(q, rq, bio)
332);
333
334/**
335 * block_bio_frontmerge - merging block operation to the beginning of an existing operation
336 * @q: queue holding operation
337 * @rq: request bio is being merged into
338 * @bio: new block operation to merge
339 *
340 * Merging block IO operation @bio to the beginning of an existing block
341 * operation in queue @q.
342 */
343DEFINE_EVENT(block_bio_merge, block_bio_frontmerge,
344
345 TP_PROTO(struct request_queue *q, struct request *rq, struct bio *bio),
346
347 TP_ARGS(q, rq, bio)
348);
349
350/**
351 * block_bio_queue - putting new block IO operation in queue
352 * @q: queue holding operation
353 * @bio: new block operation
354 *
355 * About to place the block IO operation @bio into queue @q.
356 */
357TRACE_EVENT(block_bio_queue,
358
359 TP_PROTO(struct request_queue *q, struct bio *bio),
360
361 TP_ARGS(q, bio),
362
363 TP_STRUCT__entry(
364 __field( dev_t, dev )
365 __field( sector_t, sector )
366 __field( unsigned int, nr_sector )
367 __array( char, rwbs, RWBS_LEN )
368 __array( char, comm, TASK_COMM_LEN )
369 ),
370
371 TP_fast_assign(
372 __entry->dev = bio_dev(bio);
373 __entry->sector = bio->bi_iter.bi_sector;
374 __entry->nr_sector = bio_sectors(bio);
375 blk_fill_rwbs(__entry->rwbs, bio->bi_opf, bio->bi_iter.bi_size);
376 memcpy(__entry->comm, current->comm, TASK_COMM_LEN);
377 ),
378
379 TP_printk("%d,%d %s %llu + %u [%s]",
380 MAJOR(__entry->dev), MINOR(__entry->dev), __entry->rwbs,
381 (unsigned long long)__entry->sector,
382 __entry->nr_sector, __entry->comm)
383);
384
385DECLARE_EVENT_CLASS(block_get_rq,
386
387 TP_PROTO(struct request_queue *q, struct bio *bio, int rw),
388
389 TP_ARGS(q, bio, rw),
390
391 TP_STRUCT__entry(
392 __field( dev_t, dev )
393 __field( sector_t, sector )
394 __field( unsigned int, nr_sector )
395 __array( char, rwbs, RWBS_LEN )
396 __array( char, comm, TASK_COMM_LEN )
397 ),
398
399 TP_fast_assign(
400 __entry->dev = bio ? bio_dev(bio) : 0;
401 __entry->sector = bio ? bio->bi_iter.bi_sector : 0;
402 __entry->nr_sector = bio ? bio_sectors(bio) : 0;
403 blk_fill_rwbs(__entry->rwbs,
404 bio ? bio->bi_opf : 0, __entry->nr_sector);
405 memcpy(__entry->comm, current->comm, TASK_COMM_LEN);
406 ),
407
408 TP_printk("%d,%d %s %llu + %u [%s]",
409 MAJOR(__entry->dev), MINOR(__entry->dev), __entry->rwbs,
410 (unsigned long long)__entry->sector,
411 __entry->nr_sector, __entry->comm)
412);
413
414/**
415 * block_getrq - get a free request entry in queue for block IO operations
416 * @q: queue for operations
417 * @bio: pending block IO operation (can be %NULL)
418 * @rw: low bit indicates a read (%0) or a write (%1)
419 *
420 * A request struct for queue @q has been allocated to handle the
421 * block IO operation @bio.
422 */
423DEFINE_EVENT(block_get_rq, block_getrq,
424
425 TP_PROTO(struct request_queue *q, struct bio *bio, int rw),
426
427 TP_ARGS(q, bio, rw)
428);
429
430/**
431 * block_sleeprq - waiting to get a free request entry in queue for block IO operation
432 * @q: queue for operation
433 * @bio: pending block IO operation (can be %NULL)
434 * @rw: low bit indicates a read (%0) or a write (%1)
435 *
436 * In the case where a request struct cannot be provided for queue @q
437 * the process needs to wait for an request struct to become
438 * available. This tracepoint event is generated each time the
439 * process goes to sleep waiting for request struct become available.
440 */
441DEFINE_EVENT(block_get_rq, block_sleeprq,
442
443 TP_PROTO(struct request_queue *q, struct bio *bio, int rw),
444
445 TP_ARGS(q, bio, rw)
446);
447
448/**
449 * block_plug - keep operations requests in request queue
450 * @q: request queue to plug
451 *
452 * Plug the request queue @q. Do not allow block operation requests
453 * to be sent to the device driver. Instead, accumulate requests in
454 * the queue to improve throughput performance of the block device.
455 */
456TRACE_EVENT(block_plug,
457
458 TP_PROTO(struct request_queue *q),
459
460 TP_ARGS(q),
461
462 TP_STRUCT__entry(
463 __array( char, comm, TASK_COMM_LEN )
464 ),
465
466 TP_fast_assign(
467 memcpy(__entry->comm, current->comm, TASK_COMM_LEN);
468 ),
469
470 TP_printk("[%s]", __entry->comm)
471);
472
473DECLARE_EVENT_CLASS(block_unplug,
474
475 TP_PROTO(struct request_queue *q, unsigned int depth, bool explicit),
476
477 TP_ARGS(q, depth, explicit),
478
479 TP_STRUCT__entry(
480 __field( int, nr_rq )
481 __array( char, comm, TASK_COMM_LEN )
482 ),
483
484 TP_fast_assign(
485 __entry->nr_rq = depth;
486 memcpy(__entry->comm, current->comm, TASK_COMM_LEN);
487 ),
488
489 TP_printk("[%s] %d", __entry->comm, __entry->nr_rq)
490);
491
492/**
493 * block_unplug - release of operations requests in request queue
494 * @q: request queue to unplug
495 * @depth: number of requests just added to the queue
496 * @explicit: whether this was an explicit unplug, or one from schedule()
497 *
498 * Unplug request queue @q because device driver is scheduled to work
499 * on elements in the request queue.
500 */
501DEFINE_EVENT(block_unplug, block_unplug,
502
503 TP_PROTO(struct request_queue *q, unsigned int depth, bool explicit),
504
505 TP_ARGS(q, depth, explicit)
506);
507
508/**
509 * block_split - split a single bio struct into two bio structs
510 * @q: queue containing the bio
511 * @bio: block operation being split
512 * @new_sector: The starting sector for the new bio
513 *
514 * The bio request @bio in request queue @q needs to be split into two
515 * bio requests. The newly created @bio request starts at
516 * @new_sector. This split may be required due to hardware limitation
517 * such as operation crossing device boundaries in a RAID system.
518 */
519TRACE_EVENT(block_split,
520
521 TP_PROTO(struct request_queue *q, struct bio *bio,
522 unsigned int new_sector),
523
524 TP_ARGS(q, bio, new_sector),
525
526 TP_STRUCT__entry(
527 __field( dev_t, dev )
528 __field( sector_t, sector )
529 __field( sector_t, new_sector )
530 __array( char, rwbs, RWBS_LEN )
531 __array( char, comm, TASK_COMM_LEN )
532 ),
533
534 TP_fast_assign(
535 __entry->dev = bio_dev(bio);
536 __entry->sector = bio->bi_iter.bi_sector;
537 __entry->new_sector = new_sector;
538 blk_fill_rwbs(__entry->rwbs, bio->bi_opf, bio->bi_iter.bi_size);
539 memcpy(__entry->comm, current->comm, TASK_COMM_LEN);
540 ),
541
542 TP_printk("%d,%d %s %llu / %llu [%s]",
543 MAJOR(__entry->dev), MINOR(__entry->dev), __entry->rwbs,
544 (unsigned long long)__entry->sector,
545 (unsigned long long)__entry->new_sector,
546 __entry->comm)
547);
548
549/**
550 * block_bio_remap - map request for a logical device to the raw device
551 * @q: queue holding the operation
552 * @bio: revised operation
553 * @dev: device for the operation
554 * @from: original sector for the operation
555 *
556 * An operation for a logical device has been mapped to the
557 * raw block device.
558 */
559TRACE_EVENT(block_bio_remap,
560
561 TP_PROTO(struct request_queue *q, struct bio *bio, dev_t dev,
562 sector_t from),
563
564 TP_ARGS(q, bio, dev, from),
565
566 TP_STRUCT__entry(
567 __field( dev_t, dev )
568 __field( sector_t, sector )
569 __field( unsigned int, nr_sector )
570 __field( dev_t, old_dev )
571 __field( sector_t, old_sector )
572 __array( char, rwbs, RWBS_LEN)
573 ),
574
575 TP_fast_assign(
576 __entry->dev = bio_dev(bio);
577 __entry->sector = bio->bi_iter.bi_sector;
578 __entry->nr_sector = bio_sectors(bio);
579 __entry->old_dev = dev;
580 __entry->old_sector = from;
581 blk_fill_rwbs(__entry->rwbs, bio->bi_opf, bio->bi_iter.bi_size);
582 ),
583
584 TP_printk("%d,%d %s %llu + %u <- (%d,%d) %llu",
585 MAJOR(__entry->dev), MINOR(__entry->dev), __entry->rwbs,
586 (unsigned long long)__entry->sector,
587 __entry->nr_sector,
588 MAJOR(__entry->old_dev), MINOR(__entry->old_dev),
589 (unsigned long long)__entry->old_sector)
590);
591
592/**
593 * block_rq_remap - map request for a block operation request
594 * @q: queue holding the operation
595 * @rq: block IO operation request
596 * @dev: device for the operation
597 * @from: original sector for the operation
598 *
599 * The block operation request @rq in @q has been remapped. The block
600 * operation request @rq holds the current information and @from hold
601 * the original sector.
602 */
603TRACE_EVENT(block_rq_remap,
604
605 TP_PROTO(struct request_queue *q, struct request *rq, dev_t dev,
606 sector_t from),
607
608 TP_ARGS(q, rq, dev, from),
609
610 TP_STRUCT__entry(
611 __field( dev_t, dev )
612 __field( sector_t, sector )
613 __field( unsigned int, nr_sector )
614 __field( dev_t, old_dev )
615 __field( sector_t, old_sector )
616 __field( unsigned int, nr_bios )
617 __array( char, rwbs, RWBS_LEN)
618 ),
619
620 TP_fast_assign(
621 __entry->dev = disk_devt(rq->rq_disk);
622 __entry->sector = blk_rq_pos(rq);
623 __entry->nr_sector = blk_rq_sectors(rq);
624 __entry->old_dev = dev;
625 __entry->old_sector = from;
626 __entry->nr_bios = blk_rq_count_bios(rq);
627 blk_fill_rwbs(__entry->rwbs, rq->cmd_flags, blk_rq_bytes(rq));
628 ),
629
630 TP_printk("%d,%d %s %llu + %u <- (%d,%d) %llu %u",
631 MAJOR(__entry->dev), MINOR(__entry->dev), __entry->rwbs,
632 (unsigned long long)__entry->sector,
633 __entry->nr_sector,
634 MAJOR(__entry->old_dev), MINOR(__entry->old_dev),
635 (unsigned long long)__entry->old_sector, __entry->nr_bios)
636);
637
638#endif /* _TRACE_BLOCK_H */
639
640/* This part must be outside protection */
641#include <trace/define_trace.h>
642
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