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