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TOMOYO Linux Cross Reference
Linux/include/trace/events/block.h

Version: ~ [ linux-5.11-rc3 ] ~ [ linux-5.10.7 ] ~ [ linux-5.9.16 ] ~ [ linux-5.8.18 ] ~ [ linux-5.7.19 ] ~ [ linux-5.6.19 ] ~ [ linux-5.5.19 ] ~ [ linux-5.4.89 ] ~ [ linux-5.3.18 ] ~ [ linux-5.2.21 ] ~ [ linux-5.1.21 ] ~ [ linux-5.0.21 ] ~ [ linux-4.20.17 ] ~ [ linux-4.19.167 ] ~ [ linux-4.18.20 ] ~ [ linux-4.17.19 ] ~ [ linux-4.16.18 ] ~ [ linux-4.15.18 ] ~ [ linux-4.14.215 ] ~ [ linux-4.13.16 ] ~ [ linux-4.12.14 ] ~ [ linux-4.11.12 ] ~ [ linux-4.10.17 ] ~ [ linux-4.9.251 ] ~ [ linux-4.8.17 ] ~ [ linux-4.7.10 ] ~ [ linux-4.6.7 ] ~ [ linux-4.5.7 ] ~ [ linux-4.4.251 ] ~ [ linux-4.3.6 ] ~ [ linux-4.2.8 ] ~ [ linux-4.1.52 ] ~ [ linux-4.0.9 ] ~ [ linux-3.19.8 ] ~ [ linux-3.18.140 ] ~ [ linux-3.17.8 ] ~ [ linux-3.16.85 ] ~ [ linux-3.15.10 ] ~ [ linux-3.14.79 ] ~ [ linux-3.13.11 ] ~ [ linux-3.12.74 ] ~ [ linux-3.11.10 ] ~ [ linux-3.10.108 ] ~ [ linux-2.6.32.71 ] ~ [ linux-2.6.0 ] ~ [ linux-2.4.37.11 ] ~ [ unix-v6-master ] ~ [ ccs-tools-1.8.5 ] ~ [ policy-sample ] ~
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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/buffer_head.h>
 10 #include <linux/tracepoint.h>
 11 
 12 #define RWBS_LEN        8
 13 
 14 DECLARE_EVENT_CLASS(block_buffer,
 15 
 16         TP_PROTO(struct buffer_head *bh),
 17 
 18         TP_ARGS(bh),
 19 
 20         TP_STRUCT__entry (
 21                 __field(  dev_t,        dev                     )
 22                 __field(  sector_t,     sector                  )
 23                 __field(  size_t,       size                    )
 24         ),
 25 
 26         TP_fast_assign(
 27                 __entry->dev            = bh->b_bdev->bd_dev;
 28                 __entry->sector         = bh->b_blocknr;
 29                 __entry->size           = bh->b_size;
 30         ),
 31 
 32         TP_printk("%d,%d sector=%llu size=%zu",
 33                 MAJOR(__entry->dev), MINOR(__entry->dev),
 34                 (unsigned long long)__entry->sector, __entry->size
 35         )
 36 );
 37 
 38 /**
 39  * block_touch_buffer - mark a buffer accessed
 40  * @bh: buffer_head being touched
 41  *
 42  * Called from touch_buffer().
 43  */
 44 DEFINE_EVENT(block_buffer, block_touch_buffer,
 45 
 46         TP_PROTO(struct buffer_head *bh),
 47 
 48         TP_ARGS(bh)
 49 );
 50 
 51 /**
 52  * block_dirty_buffer - mark a buffer dirty
 53  * @bh: buffer_head being dirtied
 54  *
 55  * Called from mark_buffer_dirty().
 56  */
 57 DEFINE_EVENT(block_buffer, block_dirty_buffer,
 58 
 59         TP_PROTO(struct buffer_head *bh),
 60 
 61         TP_ARGS(bh)
 62 );
 63 
 64 DECLARE_EVENT_CLASS(block_rq_with_error,
 65 
 66         TP_PROTO(struct request_queue *q, struct request *rq),
 67 
 68         TP_ARGS(q, rq),
 69 
 70         TP_STRUCT__entry(
 71                 __field(  dev_t,        dev                     )
 72                 __field(  sector_t,     sector                  )
 73                 __field(  unsigned int, nr_sector               )
 74                 __field(  int,          errors                  )
 75                 __array(  char,         rwbs,   RWBS_LEN        )
 76                 __dynamic_array( char,  cmd,    blk_cmd_buf_len(rq)     )
 77         ),
 78 
 79         TP_fast_assign(
 80                 __entry->dev       = rq->rq_disk ? disk_devt(rq->rq_disk) : 0;
 81                 __entry->sector    = (rq->cmd_type == REQ_TYPE_BLOCK_PC) ?
 82                                         0 : blk_rq_pos(rq);
 83                 __entry->nr_sector = (rq->cmd_type == REQ_TYPE_BLOCK_PC) ?
 84                                         0 : blk_rq_sectors(rq);
 85                 __entry->errors    = rq->errors;
 86 
 87                 blk_fill_rwbs(__entry->rwbs, rq->cmd_flags, blk_rq_bytes(rq));
 88                 blk_dump_cmd(__get_str(cmd), rq);
 89         ),
 90 
 91         TP_printk("%d,%d %s (%s) %llu + %u [%d]",
 92                   MAJOR(__entry->dev), MINOR(__entry->dev),
 93                   __entry->rwbs, __get_str(cmd),
 94                   (unsigned long long)__entry->sector,
 95                   __entry->nr_sector, __entry->errors)
 96 );
 97 
 98 /**
 99  * block_rq_abort - abort block operation request
100  * @q: queue containing the block operation request
101  * @rq: block IO operation request
102  *
103  * Called immediately after pending block IO operation request @rq in
104  * queue @q is aborted. The fields in the operation request @rq
105  * can be examined to determine which device and sectors the pending
106  * operation would access.
107  */
108 DEFINE_EVENT(block_rq_with_error, block_rq_abort,
109 
110         TP_PROTO(struct request_queue *q, struct request *rq),
111 
112         TP_ARGS(q, rq)
113 );
114 
115 /**
116  * block_rq_requeue - place block IO request back on a queue
117  * @q: queue holding operation
118  * @rq: block IO operation request
119  *
120  * The block operation request @rq is being placed back into queue
121  * @q.  For some reason the request was not completed and needs to be
122  * put back in the queue.
123  */
124 DEFINE_EVENT(block_rq_with_error, block_rq_requeue,
125 
126         TP_PROTO(struct request_queue *q, struct request *rq),
127 
128         TP_ARGS(q, rq)
129 );
130 
131 /**
132  * block_rq_complete - block IO operation completed by device driver
133  * @q: queue containing the block operation request
134  * @rq: block operations request
135  * @nr_bytes: number of completed bytes
136  *
137  * The block_rq_complete tracepoint event indicates that some portion
138  * of operation request has been completed by the device driver.  If
139  * the @rq->bio is %NULL, then there is absolutely no additional work to
140  * do for the request. If @rq->bio is non-NULL then there is
141  * additional work required to complete the request.
142  */
143 TRACE_EVENT(block_rq_complete,
144 
145         TP_PROTO(struct request_queue *q, struct request *rq,
146                  unsigned int nr_bytes),
147 
148         TP_ARGS(q, rq, nr_bytes),
149 
150         TP_STRUCT__entry(
151                 __field(  dev_t,        dev                     )
152                 __field(  sector_t,     sector                  )
153                 __field(  unsigned int, nr_sector               )
154                 __field(  int,          errors                  )
155                 __array(  char,         rwbs,   RWBS_LEN        )
156                 __dynamic_array( char,  cmd,    blk_cmd_buf_len(rq)     )
157         ),
158 
159         TP_fast_assign(
160                 __entry->dev       = rq->rq_disk ? disk_devt(rq->rq_disk) : 0;
161                 __entry->sector    = blk_rq_pos(rq);
162                 __entry->nr_sector = nr_bytes >> 9;
163                 __entry->errors    = rq->errors;
164 
165                 blk_fill_rwbs(__entry->rwbs, rq->cmd_flags, nr_bytes);
166                 blk_dump_cmd(__get_str(cmd), rq);
167         ),
168 
169         TP_printk("%d,%d %s (%s) %llu + %u [%d]",
170                   MAJOR(__entry->dev), MINOR(__entry->dev),
171                   __entry->rwbs, __get_str(cmd),
172                   (unsigned long long)__entry->sector,
173                   __entry->nr_sector, __entry->errors)
174 );
175 
176 DECLARE_EVENT_CLASS(block_rq,
177 
178         TP_PROTO(struct request_queue *q, struct request *rq),
179 
180         TP_ARGS(q, rq),
181 
182         TP_STRUCT__entry(
183                 __field(  dev_t,        dev                     )
184                 __field(  sector_t,     sector                  )
185                 __field(  unsigned int, nr_sector               )
186                 __field(  unsigned int, bytes                   )
187                 __array(  char,         rwbs,   RWBS_LEN        )
188                 __array(  char,         comm,   TASK_COMM_LEN   )
189                 __dynamic_array( char,  cmd,    blk_cmd_buf_len(rq)     )
190         ),
191 
192         TP_fast_assign(
193                 __entry->dev       = rq->rq_disk ? disk_devt(rq->rq_disk) : 0;
194                 __entry->sector    = (rq->cmd_type == REQ_TYPE_BLOCK_PC) ?
195                                         0 : blk_rq_pos(rq);
196                 __entry->nr_sector = (rq->cmd_type == REQ_TYPE_BLOCK_PC) ?
197                                         0 : blk_rq_sectors(rq);
198                 __entry->bytes     = (rq->cmd_type == REQ_TYPE_BLOCK_PC) ?
199                                         blk_rq_bytes(rq) : 0;
200 
201                 blk_fill_rwbs(__entry->rwbs, rq->cmd_flags, blk_rq_bytes(rq));
202                 blk_dump_cmd(__get_str(cmd), rq);
203                 memcpy(__entry->comm, current->comm, TASK_COMM_LEN);
204         ),
205 
206         TP_printk("%d,%d %s %u (%s) %llu + %u [%s]",
207                   MAJOR(__entry->dev), MINOR(__entry->dev),
208                   __entry->rwbs, __entry->bytes, __get_str(cmd),
209                   (unsigned long long)__entry->sector,
210                   __entry->nr_sector, __entry->comm)
211 );
212 
213 /**
214  * block_rq_insert - insert block operation request into queue
215  * @q: target queue
216  * @rq: block IO operation request
217  *
218  * Called immediately before block operation request @rq is inserted
219  * into queue @q.  The fields in the operation request @rq struct can
220  * be examined to determine which device and sectors the pending
221  * operation would access.
222  */
223 DEFINE_EVENT(block_rq, block_rq_insert,
224 
225         TP_PROTO(struct request_queue *q, struct request *rq),
226 
227         TP_ARGS(q, rq)
228 );
229 
230 /**
231  * block_rq_issue - issue pending block IO request operation to device driver
232  * @q: queue holding operation
233  * @rq: block IO operation operation request
234  *
235  * Called when block operation request @rq from queue @q is sent to a
236  * device driver for processing.
237  */
238 DEFINE_EVENT(block_rq, block_rq_issue,
239 
240         TP_PROTO(struct request_queue *q, struct request *rq),
241 
242         TP_ARGS(q, rq)
243 );
244 
245 /**
246  * block_bio_bounce - used bounce buffer when processing block operation
247  * @q: queue holding the block operation
248  * @bio: block operation
249  *
250  * A bounce buffer was used to handle the block operation @bio in @q.
251  * This occurs when hardware limitations prevent a direct transfer of
252  * data between the @bio data memory area and the IO device.  Use of a
253  * bounce buffer requires extra copying of data and decreases
254  * performance.
255  */
256 TRACE_EVENT(block_bio_bounce,
257 
258         TP_PROTO(struct request_queue *q, struct bio *bio),
259 
260         TP_ARGS(q, bio),
261 
262         TP_STRUCT__entry(
263                 __field( dev_t,         dev                     )
264                 __field( sector_t,      sector                  )
265                 __field( unsigned int,  nr_sector               )
266                 __array( char,          rwbs,   RWBS_LEN        )
267                 __array( char,          comm,   TASK_COMM_LEN   )
268         ),
269 
270         TP_fast_assign(
271                 __entry->dev            = bio->bi_bdev ?
272                                           bio->bi_bdev->bd_dev : 0;
273                 __entry->sector         = bio->bi_iter.bi_sector;
274                 __entry->nr_sector      = bio_sectors(bio);
275                 blk_fill_rwbs(__entry->rwbs, bio->bi_rw, bio->bi_iter.bi_size);
276                 memcpy(__entry->comm, current->comm, TASK_COMM_LEN);
277         ),
278 
279         TP_printk("%d,%d %s %llu + %u [%s]",
280                   MAJOR(__entry->dev), MINOR(__entry->dev), __entry->rwbs,
281                   (unsigned long long)__entry->sector,
282                   __entry->nr_sector, __entry->comm)
283 );
284 
285 /**
286  * block_bio_complete - completed all work on the block operation
287  * @q: queue holding the block operation
288  * @bio: block operation completed
289  * @error: io error value
290  *
291  * This tracepoint indicates there is no further work to do on this
292  * block IO operation @bio.
293  */
294 TRACE_EVENT(block_bio_complete,
295 
296         TP_PROTO(struct request_queue *q, struct bio *bio, int error),
297 
298         TP_ARGS(q, bio, error),
299 
300         TP_STRUCT__entry(
301                 __field( dev_t,         dev             )
302                 __field( sector_t,      sector          )
303                 __field( unsigned,      nr_sector       )
304                 __field( int,           error           )
305                 __array( char,          rwbs,   RWBS_LEN)
306         ),
307 
308         TP_fast_assign(
309                 __entry->dev            = bio->bi_bdev->bd_dev;
310                 __entry->sector         = bio->bi_iter.bi_sector;
311                 __entry->nr_sector      = bio_sectors(bio);
312                 __entry->error          = error;
313                 blk_fill_rwbs(__entry->rwbs, bio->bi_rw, bio->bi_iter.bi_size);
314         ),
315 
316         TP_printk("%d,%d %s %llu + %u [%d]",
317                   MAJOR(__entry->dev), MINOR(__entry->dev), __entry->rwbs,
318                   (unsigned long long)__entry->sector,
319                   __entry->nr_sector, __entry->error)
320 );
321 
322 DECLARE_EVENT_CLASS(block_bio_merge,
323 
324         TP_PROTO(struct request_queue *q, struct request *rq, struct bio *bio),
325 
326         TP_ARGS(q, rq, bio),
327 
328         TP_STRUCT__entry(
329                 __field( dev_t,         dev                     )
330                 __field( sector_t,      sector                  )
331                 __field( unsigned int,  nr_sector               )
332                 __array( char,          rwbs,   RWBS_LEN        )
333                 __array( char,          comm,   TASK_COMM_LEN   )
334         ),
335 
336         TP_fast_assign(
337                 __entry->dev            = bio->bi_bdev->bd_dev;
338                 __entry->sector         = bio->bi_iter.bi_sector;
339                 __entry->nr_sector      = bio_sectors(bio);
340                 blk_fill_rwbs(__entry->rwbs, bio->bi_rw, bio->bi_iter.bi_size);
341                 memcpy(__entry->comm, current->comm, TASK_COMM_LEN);
342         ),
343 
344         TP_printk("%d,%d %s %llu + %u [%s]",
345                   MAJOR(__entry->dev), MINOR(__entry->dev), __entry->rwbs,
346                   (unsigned long long)__entry->sector,
347                   __entry->nr_sector, __entry->comm)
348 );
349 
350 /**
351  * block_bio_backmerge - merging block operation to the end of an existing operation
352  * @q: queue holding operation
353  * @rq: request bio is being merged into
354  * @bio: new block operation to merge
355  *
356  * Merging block request @bio to the end of an existing block request
357  * in queue @q.
358  */
359 DEFINE_EVENT(block_bio_merge, block_bio_backmerge,
360 
361         TP_PROTO(struct request_queue *q, struct request *rq, struct bio *bio),
362 
363         TP_ARGS(q, rq, bio)
364 );
365 
366 /**
367  * block_bio_frontmerge - merging block operation to the beginning of an existing operation
368  * @q: queue holding operation
369  * @rq: request bio is being merged into
370  * @bio: new block operation to merge
371  *
372  * Merging block IO operation @bio to the beginning of an existing block
373  * operation in queue @q.
374  */
375 DEFINE_EVENT(block_bio_merge, block_bio_frontmerge,
376 
377         TP_PROTO(struct request_queue *q, struct request *rq, struct bio *bio),
378 
379         TP_ARGS(q, rq, bio)
380 );
381 
382 /**
383  * block_bio_queue - putting new block IO operation in queue
384  * @q: queue holding operation
385  * @bio: new block operation
386  *
387  * About to place the block IO operation @bio into queue @q.
388  */
389 TRACE_EVENT(block_bio_queue,
390 
391         TP_PROTO(struct request_queue *q, struct bio *bio),
392 
393         TP_ARGS(q, bio),
394 
395         TP_STRUCT__entry(
396                 __field( dev_t,         dev                     )
397                 __field( sector_t,      sector                  )
398                 __field( unsigned int,  nr_sector               )
399                 __array( char,          rwbs,   RWBS_LEN        )
400                 __array( char,          comm,   TASK_COMM_LEN   )
401         ),
402 
403         TP_fast_assign(
404                 __entry->dev            = bio->bi_bdev->bd_dev;
405                 __entry->sector         = bio->bi_iter.bi_sector;
406                 __entry->nr_sector      = bio_sectors(bio);
407                 blk_fill_rwbs(__entry->rwbs, bio->bi_rw, bio->bi_iter.bi_size);
408                 memcpy(__entry->comm, current->comm, TASK_COMM_LEN);
409         ),
410 
411         TP_printk("%d,%d %s %llu + %u [%s]",
412                   MAJOR(__entry->dev), MINOR(__entry->dev), __entry->rwbs,
413                   (unsigned long long)__entry->sector,
414                   __entry->nr_sector, __entry->comm)
415 );
416 
417 DECLARE_EVENT_CLASS(block_get_rq,
418 
419         TP_PROTO(struct request_queue *q, struct bio *bio, int rw),
420 
421         TP_ARGS(q, bio, rw),
422 
423         TP_STRUCT__entry(
424                 __field( dev_t,         dev                     )
425                 __field( sector_t,      sector                  )
426                 __field( unsigned int,  nr_sector               )
427                 __array( char,          rwbs,   RWBS_LEN        )
428                 __array( char,          comm,   TASK_COMM_LEN   )
429         ),
430 
431         TP_fast_assign(
432                 __entry->dev            = bio ? bio->bi_bdev->bd_dev : 0;
433                 __entry->sector         = bio ? bio->bi_iter.bi_sector : 0;
434                 __entry->nr_sector      = bio ? bio_sectors(bio) : 0;
435                 blk_fill_rwbs(__entry->rwbs,
436                               bio ? bio->bi_rw : 0, __entry->nr_sector);
437                 memcpy(__entry->comm, current->comm, TASK_COMM_LEN);
438         ),
439 
440         TP_printk("%d,%d %s %llu + %u [%s]",
441                   MAJOR(__entry->dev), MINOR(__entry->dev), __entry->rwbs,
442                   (unsigned long long)__entry->sector,
443                   __entry->nr_sector, __entry->comm)
444 );
445 
446 /**
447  * block_getrq - get a free request entry in queue for block IO operations
448  * @q: queue for operations
449  * @bio: pending block IO operation
450  * @rw: low bit indicates a read (%0) or a write (%1)
451  *
452  * A request struct for queue @q has been allocated to handle the
453  * block IO operation @bio.
454  */
455 DEFINE_EVENT(block_get_rq, block_getrq,
456 
457         TP_PROTO(struct request_queue *q, struct bio *bio, int rw),
458 
459         TP_ARGS(q, bio, rw)
460 );
461 
462 /**
463  * block_sleeprq - waiting to get a free request entry in queue for block IO operation
464  * @q: queue for operation
465  * @bio: pending block IO operation
466  * @rw: low bit indicates a read (%0) or a write (%1)
467  *
468  * In the case where a request struct cannot be provided for queue @q
469  * the process needs to wait for an request struct to become
470  * available.  This tracepoint event is generated each time the
471  * process goes to sleep waiting for request struct become available.
472  */
473 DEFINE_EVENT(block_get_rq, block_sleeprq,
474 
475         TP_PROTO(struct request_queue *q, struct bio *bio, int rw),
476 
477         TP_ARGS(q, bio, rw)
478 );
479 
480 /**
481  * block_plug - keep operations requests in request queue
482  * @q: request queue to plug
483  *
484  * Plug the request queue @q.  Do not allow block operation requests
485  * to be sent to the device driver. Instead, accumulate requests in
486  * the queue to improve throughput performance of the block device.
487  */
488 TRACE_EVENT(block_plug,
489 
490         TP_PROTO(struct request_queue *q),
491 
492         TP_ARGS(q),
493 
494         TP_STRUCT__entry(
495                 __array( char,          comm,   TASK_COMM_LEN   )
496         ),
497 
498         TP_fast_assign(
499                 memcpy(__entry->comm, current->comm, TASK_COMM_LEN);
500         ),
501 
502         TP_printk("[%s]", __entry->comm)
503 );
504 
505 DECLARE_EVENT_CLASS(block_unplug,
506 
507         TP_PROTO(struct request_queue *q, unsigned int depth, bool explicit),
508 
509         TP_ARGS(q, depth, explicit),
510 
511         TP_STRUCT__entry(
512                 __field( int,           nr_rq                   )
513                 __array( char,          comm,   TASK_COMM_LEN   )
514         ),
515 
516         TP_fast_assign(
517                 __entry->nr_rq = depth;
518                 memcpy(__entry->comm, current->comm, TASK_COMM_LEN);
519         ),
520 
521         TP_printk("[%s] %d", __entry->comm, __entry->nr_rq)
522 );
523 
524 /**
525  * block_unplug - release of operations requests in request queue
526  * @q: request queue to unplug
527  * @depth: number of requests just added to the queue
528  * @explicit: whether this was an explicit unplug, or one from schedule()
529  *
530  * Unplug request queue @q because device driver is scheduled to work
531  * on elements in the request queue.
532  */
533 DEFINE_EVENT(block_unplug, block_unplug,
534 
535         TP_PROTO(struct request_queue *q, unsigned int depth, bool explicit),
536 
537         TP_ARGS(q, depth, explicit)
538 );
539 
540 /**
541  * block_split - split a single bio struct into two bio structs
542  * @q: queue containing the bio
543  * @bio: block operation being split
544  * @new_sector: The starting sector for the new bio
545  *
546  * The bio request @bio in request queue @q needs to be split into two
547  * bio requests. The newly created @bio request starts at
548  * @new_sector. This split may be required due to hardware limitation
549  * such as operation crossing device boundaries in a RAID system.
550  */
551 TRACE_EVENT(block_split,
552 
553         TP_PROTO(struct request_queue *q, struct bio *bio,
554                  unsigned int new_sector),
555 
556         TP_ARGS(q, bio, new_sector),
557 
558         TP_STRUCT__entry(
559                 __field( dev_t,         dev                             )
560                 __field( sector_t,      sector                          )
561                 __field( sector_t,      new_sector                      )
562                 __array( char,          rwbs,           RWBS_LEN        )
563                 __array( char,          comm,           TASK_COMM_LEN   )
564         ),
565 
566         TP_fast_assign(
567                 __entry->dev            = bio->bi_bdev->bd_dev;
568                 __entry->sector         = bio->bi_iter.bi_sector;
569                 __entry->new_sector     = new_sector;
570                 blk_fill_rwbs(__entry->rwbs, bio->bi_rw, bio->bi_iter.bi_size);
571                 memcpy(__entry->comm, current->comm, TASK_COMM_LEN);
572         ),
573 
574         TP_printk("%d,%d %s %llu / %llu [%s]",
575                   MAJOR(__entry->dev), MINOR(__entry->dev), __entry->rwbs,
576                   (unsigned long long)__entry->sector,
577                   (unsigned long long)__entry->new_sector,
578                   __entry->comm)
579 );
580 
581 /**
582  * block_bio_remap - map request for a logical device to the raw device
583  * @q: queue holding the operation
584  * @bio: revised operation
585  * @dev: device for the operation
586  * @from: original sector for the operation
587  *
588  * An operation for a logical device has been mapped to the
589  * raw block device.
590  */
591 TRACE_EVENT(block_bio_remap,
592 
593         TP_PROTO(struct request_queue *q, struct bio *bio, dev_t dev,
594                  sector_t from),
595 
596         TP_ARGS(q, bio, dev, from),
597 
598         TP_STRUCT__entry(
599                 __field( dev_t,         dev             )
600                 __field( sector_t,      sector          )
601                 __field( unsigned int,  nr_sector       )
602                 __field( dev_t,         old_dev         )
603                 __field( sector_t,      old_sector      )
604                 __array( char,          rwbs,   RWBS_LEN)
605         ),
606 
607         TP_fast_assign(
608                 __entry->dev            = bio->bi_bdev->bd_dev;
609                 __entry->sector         = bio->bi_iter.bi_sector;
610                 __entry->nr_sector      = bio_sectors(bio);
611                 __entry->old_dev        = dev;
612                 __entry->old_sector     = from;
613                 blk_fill_rwbs(__entry->rwbs, bio->bi_rw, bio->bi_iter.bi_size);
614         ),
615 
616         TP_printk("%d,%d %s %llu + %u <- (%d,%d) %llu",
617                   MAJOR(__entry->dev), MINOR(__entry->dev), __entry->rwbs,
618                   (unsigned long long)__entry->sector,
619                   __entry->nr_sector,
620                   MAJOR(__entry->old_dev), MINOR(__entry->old_dev),
621                   (unsigned long long)__entry->old_sector)
622 );
623 
624 /**
625  * block_rq_remap - map request for a block operation request
626  * @q: queue holding the operation
627  * @rq: block IO operation request
628  * @dev: device for the operation
629  * @from: original sector for the operation
630  *
631  * The block operation request @rq in @q has been remapped.  The block
632  * operation request @rq holds the current information and @from hold
633  * the original sector.
634  */
635 TRACE_EVENT(block_rq_remap,
636 
637         TP_PROTO(struct request_queue *q, struct request *rq, dev_t dev,
638                  sector_t from),
639 
640         TP_ARGS(q, rq, dev, from),
641 
642         TP_STRUCT__entry(
643                 __field( dev_t,         dev             )
644                 __field( sector_t,      sector          )
645                 __field( unsigned int,  nr_sector       )
646                 __field( dev_t,         old_dev         )
647                 __field( sector_t,      old_sector      )
648                 __field( unsigned int,  nr_bios         )
649                 __array( char,          rwbs,   RWBS_LEN)
650         ),
651 
652         TP_fast_assign(
653                 __entry->dev            = disk_devt(rq->rq_disk);
654                 __entry->sector         = blk_rq_pos(rq);
655                 __entry->nr_sector      = blk_rq_sectors(rq);
656                 __entry->old_dev        = dev;
657                 __entry->old_sector     = from;
658                 __entry->nr_bios        = blk_rq_count_bios(rq);
659                 blk_fill_rwbs(__entry->rwbs, rq->cmd_flags, blk_rq_bytes(rq));
660         ),
661 
662         TP_printk("%d,%d %s %llu + %u <- (%d,%d) %llu %u",
663                   MAJOR(__entry->dev), MINOR(__entry->dev), __entry->rwbs,
664                   (unsigned long long)__entry->sector,
665                   __entry->nr_sector,
666                   MAJOR(__entry->old_dev), MINOR(__entry->old_dev),
667                   (unsigned long long)__entry->old_sector, __entry->nr_bios)
668 );
669 
670 #endif /* _TRACE_BLOCK_H */
671 
672 /* This part must be outside protection */
673 #include <trace/define_trace.h>
674 
675 

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