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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->rq_disk ? disk_devt(rq->rq_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
103/**
104 * block_rq_complete - block IO operation completed by device driver
105 * @rq: block operations request
106 * @error: status code
107 * @nr_bytes: number of completed bytes
108 *
109 * The block_rq_complete tracepoint event indicates that some portion
110 * of operation request has been completed by the device driver. If
111 * the @rq->bio is %NULL, then there is absolutely no additional work to
112 * do for the request. If @rq->bio is non-NULL then there is
113 * additional work required to complete the request.
114 */
115TRACE_EVENT(block_rq_complete,
116
117 TP_PROTO(struct request *rq, int error, unsigned int nr_bytes),
118
119 TP_ARGS(rq, error, nr_bytes),
120
121 TP_STRUCT__entry(
122 __field( dev_t, dev )
123 __field( sector_t, sector )
124 __field( unsigned int, nr_sector )
125 __field( int, error )
126 __array( char, rwbs, RWBS_LEN )
127 __dynamic_array( char, cmd, 1 )
128 ),
129
130 TP_fast_assign(
131 __entry->dev = rq->rq_disk ? disk_devt(rq->rq_disk) : 0;
132 __entry->sector = blk_rq_pos(rq);
133 __entry->nr_sector = nr_bytes >> 9;
134 __entry->error = error;
135
136 blk_fill_rwbs(__entry->rwbs, rq->cmd_flags);
137 __get_str(cmd)[0] = '\0';
138 ),
139
140 TP_printk("%d,%d %s (%s) %llu + %u [%d]",
141 MAJOR(__entry->dev), MINOR(__entry->dev),
142 __entry->rwbs, __get_str(cmd),
143 (unsigned long long)__entry->sector,
144 __entry->nr_sector, __entry->error)
145);
146
147DECLARE_EVENT_CLASS(block_rq,
148
149 TP_PROTO(struct request *rq),
150
151 TP_ARGS(rq),
152
153 TP_STRUCT__entry(
154 __field( dev_t, dev )
155 __field( sector_t, sector )
156 __field( unsigned int, nr_sector )
157 __field( unsigned int, bytes )
158 __array( char, rwbs, RWBS_LEN )
159 __array( char, comm, TASK_COMM_LEN )
160 __dynamic_array( char, cmd, 1 )
161 ),
162
163 TP_fast_assign(
164 __entry->dev = rq->rq_disk ? disk_devt(rq->rq_disk) : 0;
165 __entry->sector = blk_rq_trace_sector(rq);
166 __entry->nr_sector = blk_rq_trace_nr_sectors(rq);
167 __entry->bytes = blk_rq_bytes(rq);
168
169 blk_fill_rwbs(__entry->rwbs, rq->cmd_flags);
170 __get_str(cmd)[0] = '\0';
171 memcpy(__entry->comm, current->comm, TASK_COMM_LEN);
172 ),
173
174 TP_printk("%d,%d %s %u (%s) %llu + %u [%s]",
175 MAJOR(__entry->dev), MINOR(__entry->dev),
176 __entry->rwbs, __entry->bytes, __get_str(cmd),
177 (unsigned long long)__entry->sector,
178 __entry->nr_sector, __entry->comm)
179);
180
181/**
182 * block_rq_insert - insert block operation request into queue
183 * @rq: block IO operation request
184 *
185 * Called immediately before block operation request @rq is inserted
186 * into queue @q. The fields in the operation request @rq struct can
187 * be examined to determine which device and sectors the pending
188 * operation would access.
189 */
190DEFINE_EVENT(block_rq, block_rq_insert,
191
192 TP_PROTO(struct request *rq),
193
194 TP_ARGS(rq)
195);
196
197/**
198 * block_rq_issue - issue pending block IO request operation to device driver
199 * @rq: block IO operation request
200 *
201 * Called when block operation request @rq from queue @q is sent to a
202 * device driver for processing.
203 */
204DEFINE_EVENT(block_rq, block_rq_issue,
205
206 TP_PROTO(struct request *rq),
207
208 TP_ARGS(rq)
209);
210
211/**
212 * block_rq_merge - merge request with another one in the elevator
213 * @rq: block IO operation request
214 *
215 * Called when block operation request @rq from queue @q is merged to another
216 * request queued in the elevator.
217 */
218DEFINE_EVENT(block_rq, block_rq_merge,
219
220 TP_PROTO(struct request *rq),
221
222 TP_ARGS(rq)
223);
224
225/**
226 * block_bio_complete - completed all work on the block operation
227 * @q: queue holding the block operation
228 * @bio: block operation completed
229 *
230 * This tracepoint indicates there is no further work to do on this
231 * block IO operation @bio.
232 */
233TRACE_EVENT(block_bio_complete,
234
235 TP_PROTO(struct request_queue *q, struct bio *bio),
236
237 TP_ARGS(q, bio),
238
239 TP_STRUCT__entry(
240 __field( dev_t, dev )
241 __field( sector_t, sector )
242 __field( unsigned, nr_sector )
243 __field( int, error )
244 __array( char, rwbs, RWBS_LEN)
245 ),
246
247 TP_fast_assign(
248 __entry->dev = bio_dev(bio);
249 __entry->sector = bio->bi_iter.bi_sector;
250 __entry->nr_sector = bio_sectors(bio);
251 __entry->error = blk_status_to_errno(bio->bi_status);
252 blk_fill_rwbs(__entry->rwbs, bio->bi_opf);
253 ),
254
255 TP_printk("%d,%d %s %llu + %u [%d]",
256 MAJOR(__entry->dev), MINOR(__entry->dev), __entry->rwbs,
257 (unsigned long long)__entry->sector,
258 __entry->nr_sector, __entry->error)
259);
260
261DECLARE_EVENT_CLASS(block_bio,
262
263 TP_PROTO(struct bio *bio),
264
265 TP_ARGS(bio),
266
267 TP_STRUCT__entry(
268 __field( dev_t, dev )
269 __field( sector_t, sector )
270 __field( unsigned int, nr_sector )
271 __array( char, rwbs, RWBS_LEN )
272 __array( char, comm, TASK_COMM_LEN )
273 ),
274
275 TP_fast_assign(
276 __entry->dev = bio_dev(bio);
277 __entry->sector = bio->bi_iter.bi_sector;
278 __entry->nr_sector = bio_sectors(bio);
279 blk_fill_rwbs(__entry->rwbs, bio->bi_opf);
280 memcpy(__entry->comm, current->comm, TASK_COMM_LEN);
281 ),
282
283 TP_printk("%d,%d %s %llu + %u [%s]",
284 MAJOR(__entry->dev), MINOR(__entry->dev), __entry->rwbs,
285 (unsigned long long)__entry->sector,
286 __entry->nr_sector, __entry->comm)
287);
288
289/**
290 * block_bio_bounce - used bounce buffer when processing block operation
291 * @bio: block operation
292 *
293 * A bounce buffer was used to handle the block operation @bio in @q.
294 * This occurs when hardware limitations prevent a direct transfer of
295 * data between the @bio data memory area and the IO device. Use of a
296 * bounce buffer requires extra copying of data and decreases
297 * performance.
298 */
299DEFINE_EVENT(block_bio, block_bio_bounce,
300 TP_PROTO(struct bio *bio),
301 TP_ARGS(bio)
302);
303
304/**
305 * block_bio_backmerge - merging block operation to the end of an existing operation
306 * @bio: new block operation to merge
307 *
308 * Merging block request @bio to the end of an existing block request.
309 */
310DEFINE_EVENT(block_bio, block_bio_backmerge,
311 TP_PROTO(struct bio *bio),
312 TP_ARGS(bio)
313);
314
315/**
316 * block_bio_frontmerge - merging block operation to the beginning of an existing operation
317 * @bio: new block operation to merge
318 *
319 * Merging block IO operation @bio to the beginning of an existing block request.
320 */
321DEFINE_EVENT(block_bio, block_bio_frontmerge,
322 TP_PROTO(struct bio *bio),
323 TP_ARGS(bio)
324);
325
326/**
327 * block_bio_queue - putting new block IO operation in queue
328 * @bio: new block operation
329 *
330 * About to place the block IO operation @bio into queue @q.
331 */
332DEFINE_EVENT(block_bio, block_bio_queue,
333 TP_PROTO(struct bio *bio),
334 TP_ARGS(bio)
335);
336
337/**
338 * block_getrq - get a free request entry in queue for block IO operations
339 * @bio: pending block IO operation (can be %NULL)
340 *
341 * A request struct has been allocated to handle the block IO operation @bio.
342 */
343DEFINE_EVENT(block_bio, block_getrq,
344 TP_PROTO(struct bio *bio),
345 TP_ARGS(bio)
346);
347
348/**
349 * block_plug - keep operations requests in request queue
350 * @q: request queue to plug
351 *
352 * Plug the request queue @q. Do not allow block operation requests
353 * to be sent to the device driver. Instead, accumulate requests in
354 * the queue to improve throughput performance of the block device.
355 */
356TRACE_EVENT(block_plug,
357
358 TP_PROTO(struct request_queue *q),
359
360 TP_ARGS(q),
361
362 TP_STRUCT__entry(
363 __array( char, comm, TASK_COMM_LEN )
364 ),
365
366 TP_fast_assign(
367 memcpy(__entry->comm, current->comm, TASK_COMM_LEN);
368 ),
369
370 TP_printk("[%s]", __entry->comm)
371);
372
373DECLARE_EVENT_CLASS(block_unplug,
374
375 TP_PROTO(struct request_queue *q, unsigned int depth, bool explicit),
376
377 TP_ARGS(q, depth, explicit),
378
379 TP_STRUCT__entry(
380 __field( int, nr_rq )
381 __array( char, comm, TASK_COMM_LEN )
382 ),
383
384 TP_fast_assign(
385 __entry->nr_rq = depth;
386 memcpy(__entry->comm, current->comm, TASK_COMM_LEN);
387 ),
388
389 TP_printk("[%s] %d", __entry->comm, __entry->nr_rq)
390);
391
392/**
393 * block_unplug - release of operations requests in request queue
394 * @q: request queue to unplug
395 * @depth: number of requests just added to the queue
396 * @explicit: whether this was an explicit unplug, or one from schedule()
397 *
398 * Unplug request queue @q because device driver is scheduled to work
399 * on elements in the request queue.
400 */
401DEFINE_EVENT(block_unplug, block_unplug,
402
403 TP_PROTO(struct request_queue *q, unsigned int depth, bool explicit),
404
405 TP_ARGS(q, depth, explicit)
406);
407
408/**
409 * block_split - split a single bio struct into two bio structs
410 * @bio: block operation being split
411 * @new_sector: The starting sector for the new bio
412 *
413 * The bio request @bio needs to be split into two bio requests. The newly
414 * created @bio request starts at @new_sector. This split may be required due to
415 * hardware limitations such as operation crossing device boundaries in a RAID
416 * system.
417 */
418TRACE_EVENT(block_split,
419
420 TP_PROTO(struct bio *bio, unsigned int new_sector),
421
422 TP_ARGS(bio, new_sector),
423
424 TP_STRUCT__entry(
425 __field( dev_t, dev )
426 __field( sector_t, sector )
427 __field( sector_t, new_sector )
428 __array( char, rwbs, RWBS_LEN )
429 __array( char, comm, TASK_COMM_LEN )
430 ),
431
432 TP_fast_assign(
433 __entry->dev = bio_dev(bio);
434 __entry->sector = bio->bi_iter.bi_sector;
435 __entry->new_sector = new_sector;
436 blk_fill_rwbs(__entry->rwbs, bio->bi_opf);
437 memcpy(__entry->comm, current->comm, TASK_COMM_LEN);
438 ),
439
440 TP_printk("%d,%d %s %llu / %llu [%s]",
441 MAJOR(__entry->dev), MINOR(__entry->dev), __entry->rwbs,
442 (unsigned long long)__entry->sector,
443 (unsigned long long)__entry->new_sector,
444 __entry->comm)
445);
446
447/**
448 * block_bio_remap - map request for a logical device to the raw device
449 * @bio: revised operation
450 * @dev: original device for the operation
451 * @from: original sector for the operation
452 *
453 * An operation for a logical device has been mapped to the
454 * raw block device.
455 */
456TRACE_EVENT(block_bio_remap,
457
458 TP_PROTO(struct bio *bio, dev_t dev, sector_t from),
459
460 TP_ARGS(bio, dev, from),
461
462 TP_STRUCT__entry(
463 __field( dev_t, dev )
464 __field( sector_t, sector )
465 __field( unsigned int, nr_sector )
466 __field( dev_t, old_dev )
467 __field( sector_t, old_sector )
468 __array( char, rwbs, RWBS_LEN)
469 ),
470
471 TP_fast_assign(
472 __entry->dev = bio_dev(bio);
473 __entry->sector = bio->bi_iter.bi_sector;
474 __entry->nr_sector = bio_sectors(bio);
475 __entry->old_dev = dev;
476 __entry->old_sector = from;
477 blk_fill_rwbs(__entry->rwbs, bio->bi_opf);
478 ),
479
480 TP_printk("%d,%d %s %llu + %u <- (%d,%d) %llu",
481 MAJOR(__entry->dev), MINOR(__entry->dev), __entry->rwbs,
482 (unsigned long long)__entry->sector,
483 __entry->nr_sector,
484 MAJOR(__entry->old_dev), MINOR(__entry->old_dev),
485 (unsigned long long)__entry->old_sector)
486);
487
488/**
489 * block_rq_remap - map request for a block operation request
490 * @rq: block IO operation request
491 * @dev: device for the operation
492 * @from: original sector for the operation
493 *
494 * The block operation request @rq in @q has been remapped. The block
495 * operation request @rq holds the current information and @from hold
496 * the original sector.
497 */
498TRACE_EVENT(block_rq_remap,
499
500 TP_PROTO(struct request *rq, dev_t dev, sector_t from),
501
502 TP_ARGS(rq, dev, from),
503
504 TP_STRUCT__entry(
505 __field( dev_t, dev )
506 __field( sector_t, sector )
507 __field( unsigned int, nr_sector )
508 __field( dev_t, old_dev )
509 __field( sector_t, old_sector )
510 __field( unsigned int, nr_bios )
511 __array( char, rwbs, RWBS_LEN)
512 ),
513
514 TP_fast_assign(
515 __entry->dev = disk_devt(rq->rq_disk);
516 __entry->sector = blk_rq_pos(rq);
517 __entry->nr_sector = blk_rq_sectors(rq);
518 __entry->old_dev = dev;
519 __entry->old_sector = from;
520 __entry->nr_bios = blk_rq_count_bios(rq);
521 blk_fill_rwbs(__entry->rwbs, rq->cmd_flags);
522 ),
523
524 TP_printk("%d,%d %s %llu + %u <- (%d,%d) %llu %u",
525 MAJOR(__entry->dev), MINOR(__entry->dev), __entry->rwbs,
526 (unsigned long long)__entry->sector,
527 __entry->nr_sector,
528 MAJOR(__entry->old_dev), MINOR(__entry->old_dev),
529 (unsigned long long)__entry->old_sector, __entry->nr_bios)
530);
531
532#endif /* _TRACE_BLOCK_H */
533
534/* This part must be outside protection */
535#include <trace/define_trace.h>
536