include/trace/events/block.h

   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, req_op(rq), rq->cmd_flags,
  88                               blk_rq_bytes(rq));
  89                 blk_dump_cmd(__get_str(cmd), rq);
  90         ),
  91
  92         TP_printk("%d,%d %s (%s) %llu + %u [%d]",
  93                   MAJOR(__entry->dev), MINOR(__entry->dev),
  94                   __entry->rwbs, __get_str(cmd),
  95                   (unsigned long long)__entry->sector,
  96                   __entry->nr_sector, __entry->errors)
  97 );
  98
  99 /**
 100  * block_rq_abort - abort block operation request
 101  * @q: queue containing the block operation request
 102  * @rq: block IO operation request
 103  *
 104  * Called immediately after pending block IO operation request @rq in
 105  * queue @q is aborted. The fields in the operation request @rq
 106  * can be examined to determine which device and sectors the pending
 107  * operation would access.
 108  */
 109 DEFINE_EVENT(block_rq_with_error, block_rq_abort,
 110
 111         TP_PROTO(struct request_queue *q, struct request *rq),
 112
 113         TP_ARGS(q, rq)
 114 );
 115
 116 /**
 117  * block_rq_requeue - place block IO request back on a queue
 118  * @q: queue holding operation
 119  * @rq: block IO operation request
 120  *
 121  * The block operation request @rq is being placed back into queue
 122  * @q.  For some reason the request was not completed and needs to be
 123  * put back in the queue.
 124  */
 125 DEFINE_EVENT(block_rq_with_error, block_rq_requeue,
 126
 127         TP_PROTO(struct request_queue *q, struct request *rq),
 128
 129         TP_ARGS(q, rq)
 130 );
 131
 132 /**
 133  * block_rq_complete - block IO operation completed by device driver
 134  * @q: queue containing the block operation request
 135  * @rq: block operations request
 136  * @nr_bytes: number of completed bytes
 137  *
 138  * The block_rq_complete tracepoint event indicates that some portion
 139  * of operation request has been completed by the device driver.  If
 140  * the @rq->bio is %NULL, then there is absolutely no additional work to
 141  * do for the request. If @rq->bio is non-NULL then there is
 142  * additional work required to complete the request.
 143  */
 144 TRACE_EVENT(block_rq_complete,
 145
 146         TP_PROTO(struct request_queue *q, struct request *rq,
 147                  unsigned int nr_bytes),
 148
 149         TP_ARGS(q, rq, nr_bytes),
 150
 151         TP_STRUCT__entry(
 152                 __field(  dev_t,        dev                     )
 153                 __field(  sector_t,     sector                  )
 154                 __field(  unsigned int, nr_sector               )
 155                 __field(  int,          errors                  )
 156                 __array(  char,         rwbs,   RWBS_LEN        )
 157                 __dynamic_array( char,  cmd,    blk_cmd_buf_len(rq)     )
 158         ),
 159
 160         TP_fast_assign(
 161                 __entry->dev       = rq->rq_disk ? disk_devt(rq->rq_disk) : 0;
 162                 __entry->sector    = blk_rq_pos(rq);
 163                 __entry->nr_sector = nr_bytes >> 9;
 164                 __entry->errors    = rq->errors;
 165
 166                 blk_fill_rwbs(__entry->rwbs, req_op(rq), rq->cmd_flags, nr_bytes);
 167                 blk_dump_cmd(__get_str(cmd), rq);
 168         ),
 169
 170         TP_printk("%d,%d %s (%s) %llu + %u [%d]",
 171                   MAJOR(__entry->dev), MINOR(__entry->dev),
 172                   __entry->rwbs, __get_str(cmd),
 173                   (unsigned long long)__entry->sector,
 174                   __entry->nr_sector, __entry->errors)
 175 );
 176
 177 DECLARE_EVENT_CLASS(block_rq,
 178
 179         TP_PROTO(struct request_queue *q, struct request *rq),
 180
 181         TP_ARGS(q, rq),
 182
 183         TP_STRUCT__entry(
 184                 __field(  dev_t,        dev                     )
 185                 __field(  sector_t,     sector                  )
 186                 __field(  unsigned int, nr_sector               )
 187                 __field(  unsigned int, bytes                   )
 188                 __array(  char,         rwbs,   RWBS_LEN        )
 189                 __array(  char,         comm,   TASK_COMM_LEN   )
 190                 __dynamic_array( char,  cmd,    blk_cmd_buf_len(rq)     )
 191         ),
 192
 193         TP_fast_assign(
 194                 __entry->dev       = rq->rq_disk ? disk_devt(rq->rq_disk) : 0;
 195                 __entry->sector    = (rq->cmd_type == REQ_TYPE_BLOCK_PC) ?
 196                                         0 : blk_rq_pos(rq);
 197                 __entry->nr_sector = (rq->cmd_type == REQ_TYPE_BLOCK_PC) ?
 198                                         0 : blk_rq_sectors(rq);
 199                 __entry->bytes     = (rq->cmd_type == REQ_TYPE_BLOCK_PC) ?
 200                                         blk_rq_bytes(rq) : 0;
 201
 202                 blk_fill_rwbs(__entry->rwbs, req_op(rq), rq->cmd_flags,
 203                               blk_rq_bytes(rq));
 204                 blk_dump_cmd(__get_str(cmd), rq);
 205                 memcpy(__entry->comm, current->comm, TASK_COMM_LEN);
 206         ),
 207
 208         TP_printk("%d,%d %s %u (%s) %llu + %u [%s]",
 209                   MAJOR(__entry->dev), MINOR(__entry->dev),
 210                   __entry->rwbs, __entry->bytes, __get_str(cmd),
 211                   (unsigned long long)__entry->sector,
 212                   __entry->nr_sector, __entry->comm)
 213 );
 214
 215 /**
 216  * block_rq_insert - insert block operation request into queue
 217  * @q: target queue
 218  * @rq: block IO operation request
 219  *
 220  * Called immediately before block operation request @rq is inserted
 221  * into queue @q.  The fields in the operation request @rq struct can
 222  * be examined to determine which device and sectors the pending
 223  * operation would access.
 224  */
 225 DEFINE_EVENT(block_rq, block_rq_insert,
 226
 227         TP_PROTO(struct request_queue *q, struct request *rq),
 228
 229         TP_ARGS(q, rq)
 230 );
 231
 232 /**
 233  * block_rq_issue - issue pending block IO request operation to device driver
 234  * @q: queue holding operation
 235  * @rq: block IO operation operation request
 236  *
 237  * Called when block operation request @rq from queue @q is sent to a
 238  * device driver for processing.
 239  */
 240 DEFINE_EVENT(block_rq, block_rq_issue,
 241
 242         TP_PROTO(struct request_queue *q, struct request *rq),
 243
 244         TP_ARGS(q, rq)
 245 );
 246
 247 /**
 248  * block_bio_bounce - used bounce buffer when processing block operation
 249  * @q: queue holding the block operation
 250  * @bio: block operation
 251  *
 252  * A bounce buffer was used to handle the block operation @bio in @q.
 253  * This occurs when hardware limitations prevent a direct transfer of
 254  * data between the @bio data memory area and the IO device.  Use of a
 255  * bounce buffer requires extra copying of data and decreases
 256  * performance.
 257  */
 258 TRACE_EVENT(block_bio_bounce,
 259
 260         TP_PROTO(struct request_queue *q, struct bio *bio),
 261
 262         TP_ARGS(q, bio),
 263
 264         TP_STRUCT__entry(
 265                 __field( dev_t,         dev                     )
 266                 __field( sector_t,      sector                  )
 267                 __field( unsigned int,  nr_sector               )
 268                 __array( char,          rwbs,   RWBS_LEN        )
 269                 __array( char,          comm,   TASK_COMM_LEN   )
 270         ),
 271
 272         TP_fast_assign(
 273                 __entry->dev            = bio->bi_bdev ?
 274                                           bio->bi_bdev->bd_dev : 0;
 275                 __entry->sector         = bio->bi_iter.bi_sector;
 276                 __entry->nr_sector      = bio_sectors(bio);
 277                 blk_fill_rwbs(__entry->rwbs, bio_op(bio), bio->bi_rw,
 278                               bio->bi_iter.bi_size);
 279                 memcpy(__entry->comm, current->comm, TASK_COMM_LEN);
 280         ),
 281
 282         TP_printk("%d,%d %s %llu + %u [%s]",
 283                   MAJOR(__entry->dev), MINOR(__entry->dev), __entry->rwbs,
 284                   (unsigned long long)__entry->sector,
 285                   __entry->nr_sector, __entry->comm)
 286 );
 287
 288 /**
 289  * block_bio_complete - completed all work on the block operation
 290  * @q: queue holding the block operation
 291  * @bio: block operation completed
 292  * @error: io error value
 293  *
 294  * This tracepoint indicates there is no further work to do on this
 295  * block IO operation @bio.
 296  */
 297 TRACE_EVENT(block_bio_complete,
 298
 299         TP_PROTO(struct request_queue *q, struct bio *bio, int error),
 300
 301         TP_ARGS(q, bio, error),
 302
 303         TP_STRUCT__entry(
 304                 __field( dev_t,         dev             )
 305                 __field( sector_t,      sector          )
 306                 __field( unsigned,      nr_sector       )
 307                 __field( int,           error           )
 308                 __array( char,          rwbs,   RWBS_LEN)
 309         ),
 310
 311         TP_fast_assign(
 312                 __entry->dev            = bio->bi_bdev->bd_dev;
 313                 __entry->sector         = bio->bi_iter.bi_sector;
 314                 __entry->nr_sector      = bio_sectors(bio);
 315                 __entry->error          = error;
 316                 blk_fill_rwbs(__entry->rwbs, bio_op(bio), bio->bi_rw,
 317                               bio->bi_iter.bi_size);
 318         ),
 319
 320         TP_printk("%d,%d %s %llu + %u [%d]",
 321                   MAJOR(__entry->dev), MINOR(__entry->dev), __entry->rwbs,
 322                   (unsigned long long)__entry->sector,
 323                   __entry->nr_sector, __entry->error)
 324 );
 325
 326 DECLARE_EVENT_CLASS(block_bio_merge,
 327
 328         TP_PROTO(struct request_queue *q, struct request *rq, struct bio *bio),
 329
 330         TP_ARGS(q, rq, bio),
 331
 332         TP_STRUCT__entry(
 333                 __field( dev_t,         dev                     )
 334                 __field( sector_t,      sector                  )
 335                 __field( unsigned int,  nr_sector               )
 336                 __array( char,          rwbs,   RWBS_LEN        )
 337                 __array( char,          comm,   TASK_COMM_LEN   )
 338         ),
 339
 340         TP_fast_assign(
 341                 __entry->dev            = bio->bi_bdev->bd_dev;
 342                 __entry->sector         = bio->bi_iter.bi_sector;
 343                 __entry->nr_sector      = bio_sectors(bio);
 344                 blk_fill_rwbs(__entry->rwbs, bio_op(bio), bio->bi_rw,
 345                               bio->bi_iter.bi_size);
 346                 memcpy(__entry->comm, current->comm, TASK_COMM_LEN);
 347         ),
 348
 349         TP_printk("%d,%d %s %llu + %u [%s]",
 350                   MAJOR(__entry->dev), MINOR(__entry->dev), __entry->rwbs,
 351                   (unsigned long long)__entry->sector,
 352                   __entry->nr_sector, __entry->comm)
 353 );
 354
 355 /**
 356  * block_bio_backmerge - merging block operation to the end of an existing operation
 357  * @q: queue holding operation
 358  * @rq: request bio is being merged into
 359  * @bio: new block operation to merge
 360  *
 361  * Merging block request @bio to the end of an existing block request
 362  * in queue @q.
 363  */
 364 DEFINE_EVENT(block_bio_merge, block_bio_backmerge,
 365
 366         TP_PROTO(struct request_queue *q, struct request *rq, struct bio *bio),
 367
 368         TP_ARGS(q, rq, bio)
 369 );
 370
 371 /**
 372  * block_bio_frontmerge - merging block operation to the beginning of an existing operation
 373  * @q: queue holding operation
 374  * @rq: request bio is being merged into
 375  * @bio: new block operation to merge
 376  *
 377  * Merging block IO operation @bio to the beginning of an existing block
 378  * operation in queue @q.
 379  */
 380 DEFINE_EVENT(block_bio_merge, block_bio_frontmerge,
 381
 382         TP_PROTO(struct request_queue *q, struct request *rq, struct bio *bio),
 383
 384         TP_ARGS(q, rq, bio)
 385 );
 386
 387 /**
 388  * block_bio_queue - putting new block IO operation in queue
 389  * @q: queue holding operation
 390  * @bio: new block operation
 391  *
 392  * About to place the block IO operation @bio into queue @q.
 393  */
 394 TRACE_EVENT(block_bio_queue,
 395
 396         TP_PROTO(struct request_queue *q, struct bio *bio),
 397
 398         TP_ARGS(q, bio),
 399
 400         TP_STRUCT__entry(
 401                 __field( dev_t,         dev                     )
 402                 __field( sector_t,      sector                  )
 403                 __field( unsigned int,  nr_sector               )
 404                 __array( char,          rwbs,   RWBS_LEN        )
 405                 __array( char,          comm,   TASK_COMM_LEN   )
 406         ),
 407
 408         TP_fast_assign(
 409                 __entry->dev            = bio->bi_bdev->bd_dev;
 410                 __entry->sector         = bio->bi_iter.bi_sector;
 411                 __entry->nr_sector      = bio_sectors(bio);
 412                 blk_fill_rwbs(__entry->rwbs, bio_op(bio), bio->bi_rw,
 413                               bio->bi_iter.bi_size);
 414                 memcpy(__entry->comm, current->comm, TASK_COMM_LEN);
 415         ),
 416
 417         TP_printk("%d,%d %s %llu + %u [%s]",
 418                   MAJOR(__entry->dev), MINOR(__entry->dev), __entry->rwbs,
 419                   (unsigned long long)__entry->sector,
 420                   __entry->nr_sector, __entry->comm)
 421 );
 422
 423 DECLARE_EVENT_CLASS(block_get_rq,
 424
 425         TP_PROTO(struct request_queue *q, struct bio *bio, int rw),
 426
 427         TP_ARGS(q, bio, rw),
 428
 429         TP_STRUCT__entry(
 430                 __field( dev_t,         dev                     )
 431                 __field( sector_t,      sector                  )
 432                 __field( unsigned int,  nr_sector               )
 433                 __array( char,          rwbs,   RWBS_LEN        )
 434                 __array( char,          comm,   TASK_COMM_LEN   )
 435         ),
 436
 437         TP_fast_assign(
 438                 __entry->dev            = bio ? bio->bi_bdev->bd_dev : 0;
 439                 __entry->sector         = bio ? bio->bi_iter.bi_sector : 0;
 440                 __entry->nr_sector      = bio ? bio_sectors(bio) : 0;
 441                 blk_fill_rwbs(__entry->rwbs, bio ? bio_op(bio) : 0,
 442                               bio ? bio->bi_rw : 0, __entry->nr_sector);
 443                 memcpy(__entry->comm, current->comm, TASK_COMM_LEN);
 444         ),
 445
 446         TP_printk("%d,%d %s %llu + %u [%s]",
 447                   MAJOR(__entry->dev), MINOR(__entry->dev), __entry->rwbs,
 448                   (unsigned long long)__entry->sector,
 449                   __entry->nr_sector, __entry->comm)
 450 );
 451
 452 /**
 453  * block_getrq - get a free request entry in queue for block IO operations
 454  * @q: queue for operations
 455  * @bio: pending block IO operation
 456  * @rw: low bit indicates a read (%0) or a write (%1)
 457  *
 458  * A request struct for queue @q has been allocated to handle the
 459  * block IO operation @bio.
 460  */
 461 DEFINE_EVENT(block_get_rq, block_getrq,
 462
 463         TP_PROTO(struct request_queue *q, struct bio *bio, int rw),
 464
 465         TP_ARGS(q, bio, rw)
 466 );
 467
 468 /**
 469  * block_sleeprq - waiting to get a free request entry in queue for block IO operation
 470  * @q: queue for operation
 471  * @bio: pending block IO operation
 472  * @rw: low bit indicates a read (%0) or a write (%1)
 473  *
 474  * In the case where a request struct cannot be provided for queue @q
 475  * the process needs to wait for an request struct to become
 476  * available.  This tracepoint event is generated each time the
 477  * process goes to sleep waiting for request struct become available.
 478  */
 479 DEFINE_EVENT(block_get_rq, block_sleeprq,
 480
 481         TP_PROTO(struct request_queue *q, struct bio *bio, int rw),
 482
 483         TP_ARGS(q, bio, rw)
 484 );
 485
 486 /**
 487  * block_plug - keep operations requests in request queue
 488  * @q: request queue to plug
 489  *
 490  * Plug the request queue @q.  Do not allow block operation requests
 491  * to be sent to the device driver. Instead, accumulate requests in
 492  * the queue to improve throughput performance of the block device.
 493  */
 494 TRACE_EVENT(block_plug,
 495
 496         TP_PROTO(struct request_queue *q),
 497
 498         TP_ARGS(q),
 499
 500         TP_STRUCT__entry(
 501                 __array( char,          comm,   TASK_COMM_LEN   )
 502         ),
 503
 504         TP_fast_assign(
 505                 memcpy(__entry->comm, current->comm, TASK_COMM_LEN);
 506         ),
 507
 508         TP_printk("[%s]", __entry->comm)
 509 );
 510
 511 DECLARE_EVENT_CLASS(block_unplug,
 512
 513         TP_PROTO(struct request_queue *q, unsigned int depth, bool explicit),
 514
 515         TP_ARGS(q, depth, explicit),
 516
 517         TP_STRUCT__entry(
 518                 __field( int,           nr_rq                   )
 519                 __array( char,          comm,   TASK_COMM_LEN   )
 520         ),
 521
 522         TP_fast_assign(
 523                 __entry->nr_rq = depth;
 524                 memcpy(__entry->comm, current->comm, TASK_COMM_LEN);
 525         ),
 526
 527         TP_printk("[%s] %d", __entry->comm, __entry->nr_rq)
 528 );
 529
 530 /**
 531  * block_unplug - release of operations requests in request queue
 532  * @q: request queue to unplug
 533  * @depth: number of requests just added to the queue
 534  * @explicit: whether this was an explicit unplug, or one from schedule()
 535  *
 536  * Unplug request queue @q because device driver is scheduled to work
 537  * on elements in the request queue.
 538  */
 539 DEFINE_EVENT(block_unplug, block_unplug,
 540
 541         TP_PROTO(struct request_queue *q, unsigned int depth, bool explicit),
 542
 543         TP_ARGS(q, depth, explicit)
 544 );
 545
 546 /**
 547  * block_split - split a single bio struct into two bio structs
 548  * @q: queue containing the bio
 549  * @bio: block operation being split
 550  * @new_sector: The starting sector for the new bio
 551  *
 552  * The bio request @bio in request queue @q needs to be split into two
 553  * bio requests. The newly created @bio request starts at
 554  * @new_sector. This split may be required due to hardware limitation
 555  * such as operation crossing device boundaries in a RAID system.
 556  */
 557 TRACE_EVENT(block_split,
 558
 559         TP_PROTO(struct request_queue *q, struct bio *bio,
 560                  unsigned int new_sector),
 561
 562         TP_ARGS(q, bio, new_sector),
 563
 564         TP_STRUCT__entry(
 565                 __field( dev_t,         dev                             )
 566                 __field( sector_t,      sector                          )
 567                 __field( sector_t,      new_sector                      )
 568                 __array( char,          rwbs,           RWBS_LEN        )
 569                 __array( char,          comm,           TASK_COMM_LEN   )
 570         ),
 571
 572         TP_fast_assign(
 573                 __entry->dev            = bio->bi_bdev->bd_dev;
 574                 __entry->sector         = bio->bi_iter.bi_sector;
 575                 __entry->new_sector     = new_sector;
 576                 blk_fill_rwbs(__entry->rwbs, bio_op(bio), bio->bi_rw,
 577                               bio->bi_iter.bi_size);
 578                 memcpy(__entry->comm, current->comm, TASK_COMM_LEN);
 579         ),
 580
 581         TP_printk("%d,%d %s %llu / %llu [%s]",
 582                   MAJOR(__entry->dev), MINOR(__entry->dev), __entry->rwbs,
 583                   (unsigned long long)__entry->sector,
 584                   (unsigned long long)__entry->new_sector,
 585                   __entry->comm)
 586 );
 587
 588 /**
 589  * block_bio_remap - map request for a logical device to the raw device
 590  * @q: queue holding the operation
 591  * @bio: revised operation
 592  * @dev: device for the operation
 593  * @from: original sector for the operation
 594  *
 595  * An operation for a logical device has been mapped to the
 596  * raw block device.
 597  */
 598 TRACE_EVENT(block_bio_remap,
 599
 600         TP_PROTO(struct request_queue *q, struct bio *bio, dev_t dev,
 601                  sector_t from),
 602
 603         TP_ARGS(q, bio, dev, from),
 604
 605         TP_STRUCT__entry(
 606                 __field( dev_t,         dev             )
 607                 __field( sector_t,      sector          )
 608                 __field( unsigned int,  nr_sector       )
 609                 __field( dev_t,         old_dev         )
 610                 __field( sector_t,      old_sector      )
 611                 __array( char,          rwbs,   RWBS_LEN)
 612         ),
 613
 614         TP_fast_assign(
 615                 __entry->dev            = bio->bi_bdev->bd_dev;
 616                 __entry->sector         = bio->bi_iter.bi_sector;
 617                 __entry->nr_sector      = bio_sectors(bio);
 618                 __entry->old_dev        = dev;
 619                 __entry->old_sector     = from;
 620                 blk_fill_rwbs(__entry->rwbs, bio_op(bio), bio->bi_rw,
 621                               bio->bi_iter.bi_size);
 622         ),
 623
 624         TP_printk("%d,%d %s %llu + %u <- (%d,%d) %llu",
 625                   MAJOR(__entry->dev), MINOR(__entry->dev), __entry->rwbs,
 626                   (unsigned long long)__entry->sector,
 627                   __entry->nr_sector,
 628                   MAJOR(__entry->old_dev), MINOR(__entry->old_dev),
 629                   (unsigned long long)__entry->old_sector)
 630 );
 631
 632 /**
 633  * block_rq_remap - map request for a block operation request
 634  * @q: queue holding the operation
 635  * @rq: block IO operation request
 636  * @dev: device for the operation
 637  * @from: original sector for the operation
 638  *
 639  * The block operation request @rq in @q has been remapped.  The block
 640  * operation request @rq holds the current information and @from hold
 641  * the original sector.
 642  */
 643 TRACE_EVENT(block_rq_remap,
 644
 645         TP_PROTO(struct request_queue *q, struct request *rq, dev_t dev,
 646                  sector_t from),
 647
 648         TP_ARGS(q, rq, dev, from),
 649
 650         TP_STRUCT__entry(
 651                 __field( dev_t,         dev             )
 652                 __field( sector_t,      sector          )
 653                 __field( unsigned int,  nr_sector       )
 654                 __field( dev_t,         old_dev         )
 655                 __field( sector_t,      old_sector      )
 656                 __field( unsigned int,  nr_bios         )
 657                 __array( char,          rwbs,   RWBS_LEN)
 658         ),
 659
 660         TP_fast_assign(
 661                 __entry->dev            = disk_devt(rq->rq_disk);
 662                 __entry->sector         = blk_rq_pos(rq);
 663                 __entry->nr_sector      = blk_rq_sectors(rq);
 664                 __entry->old_dev        = dev;
 665                 __entry->old_sector     = from;
 666                 __entry->nr_bios        = blk_rq_count_bios(rq);
 667                 blk_fill_rwbs(__entry->rwbs, req_op(rq), rq->cmd_flags,
 668                               blk_rq_bytes(rq));
 669         ),
 670
 671         TP_printk("%d,%d %s %llu + %u <- (%d,%d) %llu %u",
 672                   MAJOR(__entry->dev), MINOR(__entry->dev), __entry->rwbs,
 673                   (unsigned long long)__entry->sector,
 674                   __entry->nr_sector,
 675                   MAJOR(__entry->old_dev), MINOR(__entry->old_dev),
 676                   (unsigned long long)__entry->old_sector, __entry->nr_bios)
 677 );
 678
 679 #endif /* _TRACE_BLOCK_H */
 680
 681 /* This part must be outside protection */
 682 #include <trace/define_trace.h>
 683