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  * @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_sector;
 274                 __entry->nr_sector      = bio_sectors(bio);
 275                 blk_fill_rwbs(__entry->rwbs, bio->bi_rw, bio->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_sector;
 311                 __entry->nr_sector      = bio_sectors(bio);
 312                 __entry->error          = error;
 313                 blk_fill_rwbs(__entry->rwbs, bio->bi_rw, bio->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_sector;
 339                 __entry->nr_sector      = bio_sectors(bio);
 340                 blk_fill_rwbs(__entry->rwbs, bio->bi_rw, bio->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_sector;
 406                 __entry->nr_sector      = bio_sectors(bio);
 407                 blk_fill_rwbs(__entry->rwbs, bio->bi_rw, bio->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_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_sector;
 569                 __entry->new_sector     = new_sector;
 570                 blk_fill_rwbs(__entry->rwbs, bio->bi_rw, bio->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_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_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                 __array( char,          rwbs,   RWBS_LEN)
 649         ),
 650
 651         TP_fast_assign(
 652                 __entry->dev            = disk_devt(rq->rq_disk);
 653                 __entry->sector         = blk_rq_pos(rq);
 654                 __entry->nr_sector      = blk_rq_sectors(rq);
 655                 __entry->old_dev        = dev;
 656                 __entry->old_sector     = from;
 657                 blk_fill_rwbs(__entry->rwbs, rq->cmd_flags, blk_rq_bytes(rq));
 658         ),
 659
 660         TP_printk("%d,%d %s %llu + %u <- (%d,%d) %llu",
 661                   MAJOR(__entry->dev), MINOR(__entry->dev), __entry->rwbs,
 662                   (unsigned long long)__entry->sector,
 663                   __entry->nr_sector,
 664                   MAJOR(__entry->old_dev), MINOR(__entry->old_dev),
 665                   (unsigned long long)__entry->old_sector)
 666 );
 667
 668 #endif /* _TRACE_BLOCK_H */
 669
 670 /* This part must be outside protection */
 671 #include <trace/define_trace.h>
 672