include/trace/events/block.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 #undef TRACE_SYSTEM
   3 #define TRACE_SYSTEM block
   4
   5 #if !defined(_TRACE_BLOCK_H) || defined(TRACE_HEADER_MULTI_READ)
   6 #define _TRACE_BLOCK_H
   7
   8 #include <linux/blktrace_api.h>
   9 #include <linux/blkdev.h>
  10 #include <linux/buffer_head.h>
  11 #include <linux/tracepoint.h>
  12
  13 #define RWBS_LEN        8
  14
  15 DECLARE_EVENT_CLASS(block_buffer,
  16
  17         TP_PROTO(struct buffer_head *bh),
  18
  19         TP_ARGS(bh),
  20
  21         TP_STRUCT__entry (
  22                 __field(  dev_t,        dev                     )
  23                 __field(  sector_t,     sector                  )
  24                 __field(  size_t,       size                    )
  25         ),
  26
  27         TP_fast_assign(
  28                 __entry->dev            = bh->b_bdev->bd_dev;
  29                 __entry->sector         = bh->b_blocknr;
  30                 __entry->size           = bh->b_size;
  31         ),
  32
  33         TP_printk("%d,%d sector=%llu size=%zu",
  34                 MAJOR(__entry->dev), MINOR(__entry->dev),
  35                 (unsigned long long)__entry->sector, __entry->size
  36         )
  37 );
  38
  39 /**
  40  * block_touch_buffer - mark a buffer accessed
  41  * @bh: buffer_head being touched
  42  *
  43  * Called from touch_buffer().
  44  */
  45 DEFINE_EVENT(block_buffer, block_touch_buffer,
  46
  47         TP_PROTO(struct buffer_head *bh),
  48
  49         TP_ARGS(bh)
  50 );
  51
  52 /**
  53  * block_dirty_buffer - mark a buffer dirty
  54  * @bh: buffer_head being dirtied
  55  *
  56  * Called from mark_buffer_dirty().
  57  */
  58 DEFINE_EVENT(block_buffer, block_dirty_buffer,
  59
  60         TP_PROTO(struct buffer_head *bh),
  61
  62         TP_ARGS(bh)
  63 );
  64
  65 /**
  66  * block_rq_requeue - place block IO request back on a queue
  67  * @q: queue holding operation
  68  * @rq: block IO operation request
  69  *
  70  * The block operation request @rq is being placed back into queue
  71  * @q.  For some reason the request was not completed and needs to be
  72  * put back in the queue.
  73  */
  74 TRACE_EVENT(block_rq_requeue,
  75
  76         TP_PROTO(struct request_queue *q, struct request *rq),
  77
  78         TP_ARGS(q, rq),
  79
  80         TP_STRUCT__entry(
  81                 __field(  dev_t,        dev                     )
  82                 __field(  sector_t,     sector                  )
  83                 __field(  unsigned int, nr_sector               )
  84                 __array(  char,         rwbs,   RWBS_LEN        )
  85                 __dynamic_array( char,  cmd,    1               )
  86         ),
  87
  88         TP_fast_assign(
  89                 __entry->dev       = rq->rq_disk ? disk_devt(rq->rq_disk) : 0;
  90                 __entry->sector    = blk_rq_trace_sector(rq);
  91                 __entry->nr_sector = blk_rq_trace_nr_sectors(rq);
  92
  93                 blk_fill_rwbs(__entry->rwbs, rq->cmd_flags, blk_rq_bytes(rq));
  94                 __get_str(cmd)[0] = '\0';
  95         ),
  96
  97         TP_printk("%d,%d %s (%s) %llu + %u [%d]",
  98                   MAJOR(__entry->dev), MINOR(__entry->dev),
  99                   __entry->rwbs, __get_str(cmd),
 100                   (unsigned long long)__entry->sector,
 101                   __entry->nr_sector, 0)
 102 );
 103
 104 /**
 105  * block_rq_complete - block IO operation completed by device driver
 106  * @rq: block operations request
 107  * @error: status code
 108  * @nr_bytes: number of completed bytes
 109  *
 110  * The block_rq_complete tracepoint event indicates that some portion
 111  * of operation request has been completed by the device driver.  If
 112  * the @rq->bio is %NULL, then there is absolutely no additional work to
 113  * do for the request. If @rq->bio is non-NULL then there is
 114  * additional work required to complete the request.
 115  */
 116 TRACE_EVENT(block_rq_complete,
 117
 118         TP_PROTO(struct request *rq, int error, unsigned int nr_bytes),
 119
 120         TP_ARGS(rq, error, nr_bytes),
 121
 122         TP_STRUCT__entry(
 123                 __field(  dev_t,        dev                     )
 124                 __field(  sector_t,     sector                  )
 125                 __field(  unsigned int, nr_sector               )
 126                 __field(  int,          error                   )
 127                 __array(  char,         rwbs,   RWBS_LEN        )
 128                 __dynamic_array( char,  cmd,    1               )
 129         ),
 130
 131         TP_fast_assign(
 132                 __entry->dev       = rq->rq_disk ? disk_devt(rq->rq_disk) : 0;
 133                 __entry->sector    = blk_rq_pos(rq);
 134                 __entry->nr_sector = nr_bytes >> 9;
 135                 __entry->error     = error;
 136
 137                 blk_fill_rwbs(__entry->rwbs, rq->cmd_flags, nr_bytes);
 138                 __get_str(cmd)[0] = '\0';
 139         ),
 140
 141         TP_printk("%d,%d %s (%s) %llu + %u [%d]",
 142                   MAJOR(__entry->dev), MINOR(__entry->dev),
 143                   __entry->rwbs, __get_str(cmd),
 144                   (unsigned long long)__entry->sector,
 145                   __entry->nr_sector, __entry->error)
 146 );
 147
 148 DECLARE_EVENT_CLASS(block_rq,
 149
 150         TP_PROTO(struct request_queue *q, struct request *rq),
 151
 152         TP_ARGS(q, rq),
 153
 154         TP_STRUCT__entry(
 155                 __field(  dev_t,        dev                     )
 156                 __field(  sector_t,     sector                  )
 157                 __field(  unsigned int, nr_sector               )
 158                 __field(  unsigned int, bytes                   )
 159                 __array(  char,         rwbs,   RWBS_LEN        )
 160                 __array(  char,         comm,   TASK_COMM_LEN   )
 161                 __dynamic_array( char,  cmd,    1               )
 162         ),
 163
 164         TP_fast_assign(
 165                 __entry->dev       = rq->rq_disk ? disk_devt(rq->rq_disk) : 0;
 166                 __entry->sector    = blk_rq_trace_sector(rq);
 167                 __entry->nr_sector = blk_rq_trace_nr_sectors(rq);
 168                 __entry->bytes     = blk_rq_bytes(rq);
 169
 170                 blk_fill_rwbs(__entry->rwbs, rq->cmd_flags, blk_rq_bytes(rq));
 171                 __get_str(cmd)[0] = '\0';
 172                 memcpy(__entry->comm, current->comm, TASK_COMM_LEN);
 173         ),
 174
 175         TP_printk("%d,%d %s %u (%s) %llu + %u [%s]",
 176                   MAJOR(__entry->dev), MINOR(__entry->dev),
 177                   __entry->rwbs, __entry->bytes, __get_str(cmd),
 178                   (unsigned long long)__entry->sector,
 179                   __entry->nr_sector, __entry->comm)
 180 );
 181
 182 /**
 183  * block_rq_insert - insert block operation request into queue
 184  * @q: target queue
 185  * @rq: block IO operation request
 186  *
 187  * Called immediately before block operation request @rq is inserted
 188  * into queue @q.  The fields in the operation request @rq struct can
 189  * be examined to determine which device and sectors the pending
 190  * operation would access.
 191  */
 192 DEFINE_EVENT(block_rq, block_rq_insert,
 193
 194         TP_PROTO(struct request_queue *q, struct request *rq),
 195
 196         TP_ARGS(q, rq)
 197 );
 198
 199 /**
 200  * block_rq_issue - issue pending block IO request operation to device driver
 201  * @q: queue holding operation
 202  * @rq: block IO operation operation request
 203  *
 204  * Called when block operation request @rq from queue @q is sent to a
 205  * device driver for processing.
 206  */
 207 DEFINE_EVENT(block_rq, block_rq_issue,
 208
 209         TP_PROTO(struct request_queue *q, struct request *rq),
 210
 211         TP_ARGS(q, rq)
 212 );
 213
 214 /**
 215  * block_rq_merge - merge request with another one in the elevator
 216  * @q: queue holding operation
 217  * @rq: block IO operation operation request
 218  *
 219  * Called when block operation request @rq from queue @q is merged to another
 220  * request queued in the elevator.
 221  */
 222 DEFINE_EVENT(block_rq, block_rq_merge,
 223
 224         TP_PROTO(struct request_queue *q, struct request *rq),
 225
 226         TP_ARGS(q, rq)
 227 );
 228
 229 /**
 230  * block_bio_bounce - used bounce buffer when processing block operation
 231  * @q: queue holding the block operation
 232  * @bio: block operation
 233  *
 234  * A bounce buffer was used to handle the block operation @bio in @q.
 235  * This occurs when hardware limitations prevent a direct transfer of
 236  * data between the @bio data memory area and the IO device.  Use of a
 237  * bounce buffer requires extra copying of data and decreases
 238  * performance.
 239  */
 240 TRACE_EVENT(block_bio_bounce,
 241
 242         TP_PROTO(struct request_queue *q, struct bio *bio),
 243
 244         TP_ARGS(q, bio),
 245
 246         TP_STRUCT__entry(
 247                 __field( dev_t,         dev                     )
 248                 __field( sector_t,      sector                  )
 249                 __field( unsigned int,  nr_sector               )
 250                 __array( char,          rwbs,   RWBS_LEN        )
 251                 __array( char,          comm,   TASK_COMM_LEN   )
 252         ),
 253
 254         TP_fast_assign(
 255                 __entry->dev            = bio_dev(bio);
 256                 __entry->sector         = bio->bi_iter.bi_sector;
 257                 __entry->nr_sector      = bio_sectors(bio);
 258                 blk_fill_rwbs(__entry->rwbs, bio->bi_opf, bio->bi_iter.bi_size);
 259                 memcpy(__entry->comm, current->comm, TASK_COMM_LEN);
 260         ),
 261
 262         TP_printk("%d,%d %s %llu + %u [%s]",
 263                   MAJOR(__entry->dev), MINOR(__entry->dev), __entry->rwbs,
 264                   (unsigned long long)__entry->sector,
 265                   __entry->nr_sector, __entry->comm)
 266 );
 267
 268 /**
 269  * block_bio_complete - completed all work on the block operation
 270  * @q: queue holding the block operation
 271  * @bio: block operation completed
 272  *
 273  * This tracepoint indicates there is no further work to do on this
 274  * block IO operation @bio.
 275  */
 276 TRACE_EVENT(block_bio_complete,
 277
 278         TP_PROTO(struct request_queue *q, struct bio *bio),
 279
 280         TP_ARGS(q, bio),
 281
 282         TP_STRUCT__entry(
 283                 __field( dev_t,         dev             )
 284                 __field( sector_t,      sector          )
 285                 __field( unsigned,      nr_sector       )
 286                 __field( int,           error           )
 287                 __array( char,          rwbs,   RWBS_LEN)
 288         ),
 289
 290         TP_fast_assign(
 291                 __entry->dev            = bio_dev(bio);
 292                 __entry->sector         = bio->bi_iter.bi_sector;
 293                 __entry->nr_sector      = bio_sectors(bio);
 294                 __entry->error          = blk_status_to_errno(bio->bi_status);
 295                 blk_fill_rwbs(__entry->rwbs, bio->bi_opf, bio->bi_iter.bi_size);
 296         ),
 297
 298         TP_printk("%d,%d %s %llu + %u [%d]",
 299                   MAJOR(__entry->dev), MINOR(__entry->dev), __entry->rwbs,
 300                   (unsigned long long)__entry->sector,
 301                   __entry->nr_sector, __entry->error)
 302 );
 303
 304 DECLARE_EVENT_CLASS(block_bio_merge,
 305
 306         TP_PROTO(struct request_queue *q, struct request *rq, struct bio *bio),
 307
 308         TP_ARGS(q, rq, bio),
 309
 310         TP_STRUCT__entry(
 311                 __field( dev_t,         dev                     )
 312                 __field( sector_t,      sector                  )
 313                 __field( unsigned int,  nr_sector               )
 314                 __array( char,          rwbs,   RWBS_LEN        )
 315                 __array( char,          comm,   TASK_COMM_LEN   )
 316         ),
 317
 318         TP_fast_assign(
 319                 __entry->dev            = bio_dev(bio);
 320                 __entry->sector         = bio->bi_iter.bi_sector;
 321                 __entry->nr_sector      = bio_sectors(bio);
 322                 blk_fill_rwbs(__entry->rwbs, bio->bi_opf, bio->bi_iter.bi_size);
 323                 memcpy(__entry->comm, current->comm, TASK_COMM_LEN);
 324         ),
 325
 326         TP_printk("%d,%d %s %llu + %u [%s]",
 327                   MAJOR(__entry->dev), MINOR(__entry->dev), __entry->rwbs,
 328                   (unsigned long long)__entry->sector,
 329                   __entry->nr_sector, __entry->comm)
 330 );
 331
 332 /**
 333  * block_bio_backmerge - merging block operation to the end of an existing operation
 334  * @q: queue holding operation
 335  * @rq: request bio is being merged into
 336  * @bio: new block operation to merge
 337  *
 338  * Merging block request @bio to the end of an existing block request
 339  * in queue @q.
 340  */
 341 DEFINE_EVENT(block_bio_merge, block_bio_backmerge,
 342
 343         TP_PROTO(struct request_queue *q, struct request *rq, struct bio *bio),
 344
 345         TP_ARGS(q, rq, bio)
 346 );
 347
 348 /**
 349  * block_bio_frontmerge - merging block operation to the beginning of an existing operation
 350  * @q: queue holding operation
 351  * @rq: request bio is being merged into
 352  * @bio: new block operation to merge
 353  *
 354  * Merging block IO operation @bio to the beginning of an existing block
 355  * operation in queue @q.
 356  */
 357 DEFINE_EVENT(block_bio_merge, block_bio_frontmerge,
 358
 359         TP_PROTO(struct request_queue *q, struct request *rq, struct bio *bio),
 360
 361         TP_ARGS(q, rq, bio)
 362 );
 363
 364 /**
 365  * block_bio_queue - putting new block IO operation in queue
 366  * @q: queue holding operation
 367  * @bio: new block operation
 368  *
 369  * About to place the block IO operation @bio into queue @q.
 370  */
 371 TRACE_EVENT(block_bio_queue,
 372
 373         TP_PROTO(struct request_queue *q, struct bio *bio),
 374
 375         TP_ARGS(q, bio),
 376
 377         TP_STRUCT__entry(
 378                 __field( dev_t,         dev                     )
 379                 __field( sector_t,      sector                  )
 380                 __field( unsigned int,  nr_sector               )
 381                 __array( char,          rwbs,   RWBS_LEN        )
 382                 __array( char,          comm,   TASK_COMM_LEN   )
 383         ),
 384
 385         TP_fast_assign(
 386                 __entry->dev            = bio_dev(bio);
 387                 __entry->sector         = bio->bi_iter.bi_sector;
 388                 __entry->nr_sector      = bio_sectors(bio);
 389                 blk_fill_rwbs(__entry->rwbs, bio->bi_opf, bio->bi_iter.bi_size);
 390                 memcpy(__entry->comm, current->comm, TASK_COMM_LEN);
 391         ),
 392
 393         TP_printk("%d,%d %s %llu + %u [%s]",
 394                   MAJOR(__entry->dev), MINOR(__entry->dev), __entry->rwbs,
 395                   (unsigned long long)__entry->sector,
 396                   __entry->nr_sector, __entry->comm)
 397 );
 398
 399 DECLARE_EVENT_CLASS(block_get_rq,
 400
 401         TP_PROTO(struct request_queue *q, struct bio *bio, int rw),
 402
 403         TP_ARGS(q, bio, rw),
 404
 405         TP_STRUCT__entry(
 406                 __field( dev_t,         dev                     )
 407                 __field( sector_t,      sector                  )
 408                 __field( unsigned int,  nr_sector               )
 409                 __array( char,          rwbs,   RWBS_LEN        )
 410                 __array( char,          comm,   TASK_COMM_LEN   )
 411         ),
 412
 413         TP_fast_assign(
 414                 __entry->dev            = bio ? bio_dev(bio) : 0;
 415                 __entry->sector         = bio ? bio->bi_iter.bi_sector : 0;
 416                 __entry->nr_sector      = bio ? bio_sectors(bio) : 0;
 417                 blk_fill_rwbs(__entry->rwbs,
 418                               bio ? bio->bi_opf : 0, __entry->nr_sector);
 419                 memcpy(__entry->comm, current->comm, TASK_COMM_LEN);
 420         ),
 421
 422         TP_printk("%d,%d %s %llu + %u [%s]",
 423                   MAJOR(__entry->dev), MINOR(__entry->dev), __entry->rwbs,
 424                   (unsigned long long)__entry->sector,
 425                   __entry->nr_sector, __entry->comm)
 426 );
 427
 428 /**
 429  * block_getrq - get a free request entry in queue for block IO operations
 430  * @q: queue for operations
 431  * @bio: pending block IO operation (can be %NULL)
 432  * @rw: low bit indicates a read (%0) or a write (%1)
 433  *
 434  * A request struct for queue @q has been allocated to handle the
 435  * block IO operation @bio.
 436  */
 437 DEFINE_EVENT(block_get_rq, block_getrq,
 438
 439         TP_PROTO(struct request_queue *q, struct bio *bio, int rw),
 440
 441         TP_ARGS(q, bio, rw)
 442 );
 443
 444 /**
 445  * block_sleeprq - waiting to get a free request entry in queue for block IO operation
 446  * @q: queue for operation
 447  * @bio: pending block IO operation (can be %NULL)
 448  * @rw: low bit indicates a read (%0) or a write (%1)
 449  *
 450  * In the case where a request struct cannot be provided for queue @q
 451  * the process needs to wait for an request struct to become
 452  * available.  This tracepoint event is generated each time the
 453  * process goes to sleep waiting for request struct become available.
 454  */
 455 DEFINE_EVENT(block_get_rq, block_sleeprq,
 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_plug - keep operations requests in request queue
 464  * @q: request queue to plug
 465  *
 466  * Plug the request queue @q.  Do not allow block operation requests
 467  * to be sent to the device driver. Instead, accumulate requests in
 468  * the queue to improve throughput performance of the block device.
 469  */
 470 TRACE_EVENT(block_plug,
 471
 472         TP_PROTO(struct request_queue *q),
 473
 474         TP_ARGS(q),
 475
 476         TP_STRUCT__entry(
 477                 __array( char,          comm,   TASK_COMM_LEN   )
 478         ),
 479
 480         TP_fast_assign(
 481                 memcpy(__entry->comm, current->comm, TASK_COMM_LEN);
 482         ),
 483
 484         TP_printk("[%s]", __entry->comm)
 485 );
 486
 487 DECLARE_EVENT_CLASS(block_unplug,
 488
 489         TP_PROTO(struct request_queue *q, unsigned int depth, bool explicit),
 490
 491         TP_ARGS(q, depth, explicit),
 492
 493         TP_STRUCT__entry(
 494                 __field( int,           nr_rq                   )
 495                 __array( char,          comm,   TASK_COMM_LEN   )
 496         ),
 497
 498         TP_fast_assign(
 499                 __entry->nr_rq = depth;
 500                 memcpy(__entry->comm, current->comm, TASK_COMM_LEN);
 501         ),
 502
 503         TP_printk("[%s] %d", __entry->comm, __entry->nr_rq)
 504 );
 505
 506 /**
 507  * block_unplug - release of operations requests in request queue
 508  * @q: request queue to unplug
 509  * @depth: number of requests just added to the queue
 510  * @explicit: whether this was an explicit unplug, or one from schedule()
 511  *
 512  * Unplug request queue @q because device driver is scheduled to work
 513  * on elements in the request queue.
 514  */
 515 DEFINE_EVENT(block_unplug, block_unplug,
 516
 517         TP_PROTO(struct request_queue *q, unsigned int depth, bool explicit),
 518
 519         TP_ARGS(q, depth, explicit)
 520 );
 521
 522 /**
 523  * block_split - split a single bio struct into two bio structs
 524  * @q: queue containing the bio
 525  * @bio: block operation being split
 526  * @new_sector: The starting sector for the new bio
 527  *
 528  * The bio request @bio in request queue @q needs to be split into two
 529  * bio requests. The newly created @bio request starts at
 530  * @new_sector. This split may be required due to hardware limitation
 531  * such as operation crossing device boundaries in a RAID system.
 532  */
 533 TRACE_EVENT(block_split,
 534
 535         TP_PROTO(struct request_queue *q, struct bio *bio,
 536                  unsigned int new_sector),
 537
 538         TP_ARGS(q, bio, new_sector),
 539
 540         TP_STRUCT__entry(
 541                 __field( dev_t,         dev                             )
 542                 __field( sector_t,      sector                          )
 543                 __field( sector_t,      new_sector                      )
 544                 __array( char,          rwbs,           RWBS_LEN        )
 545                 __array( char,          comm,           TASK_COMM_LEN   )
 546         ),
 547
 548         TP_fast_assign(
 549                 __entry->dev            = bio_dev(bio);
 550                 __entry->sector         = bio->bi_iter.bi_sector;
 551                 __entry->new_sector     = new_sector;
 552                 blk_fill_rwbs(__entry->rwbs, bio->bi_opf, bio->bi_iter.bi_size);
 553                 memcpy(__entry->comm, current->comm, TASK_COMM_LEN);
 554         ),
 555
 556         TP_printk("%d,%d %s %llu / %llu [%s]",
 557                   MAJOR(__entry->dev), MINOR(__entry->dev), __entry->rwbs,
 558                   (unsigned long long)__entry->sector,
 559                   (unsigned long long)__entry->new_sector,
 560                   __entry->comm)
 561 );
 562
 563 /**
 564  * block_bio_remap - map request for a logical device to the raw device
 565  * @q: queue holding the operation
 566  * @bio: revised operation
 567  * @dev: device for the operation
 568  * @from: original sector for the operation
 569  *
 570  * An operation for a logical device has been mapped to the
 571  * raw block device.
 572  */
 573 TRACE_EVENT(block_bio_remap,
 574
 575         TP_PROTO(struct request_queue *q, struct bio *bio, dev_t dev,
 576                  sector_t from),
 577
 578         TP_ARGS(q, bio, dev, from),
 579
 580         TP_STRUCT__entry(
 581                 __field( dev_t,         dev             )
 582                 __field( sector_t,      sector          )
 583                 __field( unsigned int,  nr_sector       )
 584                 __field( dev_t,         old_dev         )
 585                 __field( sector_t,      old_sector      )
 586                 __array( char,          rwbs,   RWBS_LEN)
 587         ),
 588
 589         TP_fast_assign(
 590                 __entry->dev            = bio_dev(bio);
 591                 __entry->sector         = bio->bi_iter.bi_sector;
 592                 __entry->nr_sector      = bio_sectors(bio);
 593                 __entry->old_dev        = dev;
 594                 __entry->old_sector     = from;
 595                 blk_fill_rwbs(__entry->rwbs, bio->bi_opf, bio->bi_iter.bi_size);
 596         ),
 597
 598         TP_printk("%d,%d %s %llu + %u <- (%d,%d) %llu",
 599                   MAJOR(__entry->dev), MINOR(__entry->dev), __entry->rwbs,
 600                   (unsigned long long)__entry->sector,
 601                   __entry->nr_sector,
 602                   MAJOR(__entry->old_dev), MINOR(__entry->old_dev),
 603                   (unsigned long long)__entry->old_sector)
 604 );
 605
 606 /**
 607  * block_rq_remap - map request for a block operation request
 608  * @q: queue holding the operation
 609  * @rq: block IO operation request
 610  * @dev: device for the operation
 611  * @from: original sector for the operation
 612  *
 613  * The block operation request @rq in @q has been remapped.  The block
 614  * operation request @rq holds the current information and @from hold
 615  * the original sector.
 616  */
 617 TRACE_EVENT(block_rq_remap,
 618
 619         TP_PROTO(struct request_queue *q, struct request *rq, dev_t dev,
 620                  sector_t from),
 621
 622         TP_ARGS(q, rq, dev, from),
 623
 624         TP_STRUCT__entry(
 625                 __field( dev_t,         dev             )
 626                 __field( sector_t,      sector          )
 627                 __field( unsigned int,  nr_sector       )
 628                 __field( dev_t,         old_dev         )
 629                 __field( sector_t,      old_sector      )
 630                 __field( unsigned int,  nr_bios         )
 631                 __array( char,          rwbs,   RWBS_LEN)
 632         ),
 633
 634         TP_fast_assign(
 635                 __entry->dev            = disk_devt(rq->rq_disk);
 636                 __entry->sector         = blk_rq_pos(rq);
 637                 __entry->nr_sector      = blk_rq_sectors(rq);
 638                 __entry->old_dev        = dev;
 639                 __entry->old_sector     = from;
 640                 __entry->nr_bios        = blk_rq_count_bios(rq);
 641                 blk_fill_rwbs(__entry->rwbs, rq->cmd_flags, blk_rq_bytes(rq));
 642         ),
 643
 644         TP_printk("%d,%d %s %llu + %u <- (%d,%d) %llu %u",
 645                   MAJOR(__entry->dev), MINOR(__entry->dev), __entry->rwbs,
 646                   (unsigned long long)__entry->sector,
 647                   __entry->nr_sector,
 648                   MAJOR(__entry->old_dev), MINOR(__entry->old_dev),
 649                   (unsigned long long)__entry->old_sector, __entry->nr_bios)
 650 );
 651
 652 #endif /* _TRACE_BLOCK_H */
 653
 654 /* This part must be outside protection */
 655 #include <trace/define_trace.h>
 656