blktrace: Remove blk_fill_rwbs_rq.
[linux-3.10.git] / 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/tracepoint.h>
10
11 DECLARE_EVENT_CLASS(block_rq_with_error,
12
13         TP_PROTO(struct request_queue *q, struct request *rq),
14
15         TP_ARGS(q, rq),
16
17         TP_STRUCT__entry(
18                 __field(  dev_t,        dev                     )
19                 __field(  sector_t,     sector                  )
20                 __field(  unsigned int, nr_sector               )
21                 __field(  int,          errors                  )
22                 __array(  char,         rwbs,   6               )
23                 __dynamic_array( char,  cmd,    blk_cmd_buf_len(rq)     )
24         ),
25
26         TP_fast_assign(
27                 __entry->dev       = rq->rq_disk ? disk_devt(rq->rq_disk) : 0;
28                 __entry->sector    = (rq->cmd_type == REQ_TYPE_BLOCK_PC) ?
29                                         0 : blk_rq_pos(rq);
30                 __entry->nr_sector = (rq->cmd_type == REQ_TYPE_BLOCK_PC) ?
31                                         0 : blk_rq_sectors(rq);
32                 __entry->errors    = rq->errors;
33
34                 blk_fill_rwbs(__entry->rwbs, rq->cmd_flags, blk_rq_bytes(rq));
35                 blk_dump_cmd(__get_str(cmd), rq);
36         ),
37
38         TP_printk("%d,%d %s (%s) %llu + %u [%d]",
39                   MAJOR(__entry->dev), MINOR(__entry->dev),
40                   __entry->rwbs, __get_str(cmd),
41                   (unsigned long long)__entry->sector,
42                   __entry->nr_sector, __entry->errors)
43 );
44
45 /**
46  * block_rq_abort - abort block operation request
47  * @q: queue containing the block operation request
48  * @rq: block IO operation request
49  *
50  * Called immediately after pending block IO operation request @rq in
51  * queue @q is aborted. The fields in the operation request @rq
52  * can be examined to determine which device and sectors the pending
53  * operation would access.
54  */
55 DEFINE_EVENT(block_rq_with_error, block_rq_abort,
56
57         TP_PROTO(struct request_queue *q, struct request *rq),
58
59         TP_ARGS(q, rq)
60 );
61
62 /**
63  * block_rq_requeue - place block IO request back on a queue
64  * @q: queue holding operation
65  * @rq: block IO operation request
66  *
67  * The block operation request @rq is being placed back into queue
68  * @q.  For some reason the request was not completed and needs to be
69  * put back in the queue.
70  */
71 DEFINE_EVENT(block_rq_with_error, block_rq_requeue,
72
73         TP_PROTO(struct request_queue *q, struct request *rq),
74
75         TP_ARGS(q, rq)
76 );
77
78 /**
79  * block_rq_complete - block IO operation completed by device driver
80  * @q: queue containing the block operation request
81  * @rq: block operations request
82  *
83  * The block_rq_complete tracepoint event indicates that some portion
84  * of operation request has been completed by the device driver.  If
85  * the @rq->bio is %NULL, then there is absolutely no additional work to
86  * do for the request. If @rq->bio is non-NULL then there is
87  * additional work required to complete the request.
88  */
89 DEFINE_EVENT(block_rq_with_error, block_rq_complete,
90
91         TP_PROTO(struct request_queue *q, struct request *rq),
92
93         TP_ARGS(q, rq)
94 );
95
96 DECLARE_EVENT_CLASS(block_rq,
97
98         TP_PROTO(struct request_queue *q, struct request *rq),
99
100         TP_ARGS(q, rq),
101
102         TP_STRUCT__entry(
103                 __field(  dev_t,        dev                     )
104                 __field(  sector_t,     sector                  )
105                 __field(  unsigned int, nr_sector               )
106                 __field(  unsigned int, bytes                   )
107                 __array(  char,         rwbs,   6               )
108                 __array(  char,         comm,   TASK_COMM_LEN   )
109                 __dynamic_array( char,  cmd,    blk_cmd_buf_len(rq)     )
110         ),
111
112         TP_fast_assign(
113                 __entry->dev       = rq->rq_disk ? disk_devt(rq->rq_disk) : 0;
114                 __entry->sector    = (rq->cmd_type == REQ_TYPE_BLOCK_PC) ?
115                                         0 : blk_rq_pos(rq);
116                 __entry->nr_sector = (rq->cmd_type == REQ_TYPE_BLOCK_PC) ?
117                                         0 : blk_rq_sectors(rq);
118                 __entry->bytes     = (rq->cmd_type == REQ_TYPE_BLOCK_PC) ?
119                                         blk_rq_bytes(rq) : 0;
120
121                 blk_fill_rwbs(__entry->rwbs, rq->cmd_flags, blk_rq_bytes(rq));
122                 blk_dump_cmd(__get_str(cmd), rq);
123                 memcpy(__entry->comm, current->comm, TASK_COMM_LEN);
124         ),
125
126         TP_printk("%d,%d %s %u (%s) %llu + %u [%s]",
127                   MAJOR(__entry->dev), MINOR(__entry->dev),
128                   __entry->rwbs, __entry->bytes, __get_str(cmd),
129                   (unsigned long long)__entry->sector,
130                   __entry->nr_sector, __entry->comm)
131 );
132
133 /**
134  * block_rq_insert - insert block operation request into queue
135  * @q: target queue
136  * @rq: block IO operation request
137  *
138  * Called immediately before block operation request @rq is inserted
139  * into queue @q.  The fields in the operation request @rq struct can
140  * be examined to determine which device and sectors the pending
141  * operation would access.
142  */
143 DEFINE_EVENT(block_rq, block_rq_insert,
144
145         TP_PROTO(struct request_queue *q, struct request *rq),
146
147         TP_ARGS(q, rq)
148 );
149
150 /**
151  * block_rq_issue - issue pending block IO request operation to device driver
152  * @q: queue holding operation
153  * @rq: block IO operation operation request
154  *
155  * Called when block operation request @rq from queue @q is sent to a
156  * device driver for processing.
157  */
158 DEFINE_EVENT(block_rq, block_rq_issue,
159
160         TP_PROTO(struct request_queue *q, struct request *rq),
161
162         TP_ARGS(q, rq)
163 );
164
165 /**
166  * block_bio_bounce - used bounce buffer when processing block operation
167  * @q: queue holding the block operation
168  * @bio: block operation
169  *
170  * A bounce buffer was used to handle the block operation @bio in @q.
171  * This occurs when hardware limitations prevent a direct transfer of
172  * data between the @bio data memory area and the IO device.  Use of a
173  * bounce buffer requires extra copying of data and decreases
174  * performance.
175  */
176 TRACE_EVENT(block_bio_bounce,
177
178         TP_PROTO(struct request_queue *q, struct bio *bio),
179
180         TP_ARGS(q, bio),
181
182         TP_STRUCT__entry(
183                 __field( dev_t,         dev                     )
184                 __field( sector_t,      sector                  )
185                 __field( unsigned int,  nr_sector               )
186                 __array( char,          rwbs,   6               )
187                 __array( char,          comm,   TASK_COMM_LEN   )
188         ),
189
190         TP_fast_assign(
191                 __entry->dev            = bio->bi_bdev ?
192                                           bio->bi_bdev->bd_dev : 0;
193                 __entry->sector         = bio->bi_sector;
194                 __entry->nr_sector      = bio->bi_size >> 9;
195                 blk_fill_rwbs(__entry->rwbs, bio->bi_rw, bio->bi_size);
196                 memcpy(__entry->comm, current->comm, TASK_COMM_LEN);
197         ),
198
199         TP_printk("%d,%d %s %llu + %u [%s]",
200                   MAJOR(__entry->dev), MINOR(__entry->dev), __entry->rwbs,
201                   (unsigned long long)__entry->sector,
202                   __entry->nr_sector, __entry->comm)
203 );
204
205 /**
206  * block_bio_complete - completed all work on the block operation
207  * @q: queue holding the block operation
208  * @bio: block operation completed
209  * @error: io error value
210  *
211  * This tracepoint indicates there is no further work to do on this
212  * block IO operation @bio.
213  */
214 TRACE_EVENT(block_bio_complete,
215
216         TP_PROTO(struct request_queue *q, struct bio *bio, int error),
217
218         TP_ARGS(q, bio, error),
219
220         TP_STRUCT__entry(
221                 __field( dev_t,         dev             )
222                 __field( sector_t,      sector          )
223                 __field( unsigned,      nr_sector       )
224                 __field( int,           error           )
225                 __array( char,          rwbs,   6       )
226         ),
227
228         TP_fast_assign(
229                 __entry->dev            = bio->bi_bdev->bd_dev;
230                 __entry->sector         = bio->bi_sector;
231                 __entry->nr_sector      = bio->bi_size >> 9;
232                 __entry->error          = error;
233                 blk_fill_rwbs(__entry->rwbs, bio->bi_rw, bio->bi_size);
234         ),
235
236         TP_printk("%d,%d %s %llu + %u [%d]",
237                   MAJOR(__entry->dev), MINOR(__entry->dev), __entry->rwbs,
238                   (unsigned long long)__entry->sector,
239                   __entry->nr_sector, __entry->error)
240 );
241
242 DECLARE_EVENT_CLASS(block_bio,
243
244         TP_PROTO(struct request_queue *q, struct bio *bio),
245
246         TP_ARGS(q, bio),
247
248         TP_STRUCT__entry(
249                 __field( dev_t,         dev                     )
250                 __field( sector_t,      sector                  )
251                 __field( unsigned int,  nr_sector               )
252                 __array( char,          rwbs,   6               )
253                 __array( char,          comm,   TASK_COMM_LEN   )
254         ),
255
256         TP_fast_assign(
257                 __entry->dev            = bio->bi_bdev->bd_dev;
258                 __entry->sector         = bio->bi_sector;
259                 __entry->nr_sector      = bio->bi_size >> 9;
260                 blk_fill_rwbs(__entry->rwbs, bio->bi_rw, bio->bi_size);
261                 memcpy(__entry->comm, current->comm, TASK_COMM_LEN);
262         ),
263
264         TP_printk("%d,%d %s %llu + %u [%s]",
265                   MAJOR(__entry->dev), MINOR(__entry->dev), __entry->rwbs,
266                   (unsigned long long)__entry->sector,
267                   __entry->nr_sector, __entry->comm)
268 );
269
270 /**
271  * block_bio_backmerge - merging block operation to the end of an existing operation
272  * @q: queue holding operation
273  * @bio: new block operation to merge
274  *
275  * Merging block request @bio to the end of an existing block request
276  * in queue @q.
277  */
278 DEFINE_EVENT(block_bio, block_bio_backmerge,
279
280         TP_PROTO(struct request_queue *q, struct bio *bio),
281
282         TP_ARGS(q, bio)
283 );
284
285 /**
286  * block_bio_frontmerge - merging block operation to the beginning of an existing operation
287  * @q: queue holding operation
288  * @bio: new block operation to merge
289  *
290  * Merging block IO operation @bio to the beginning of an existing block
291  * operation in queue @q.
292  */
293 DEFINE_EVENT(block_bio, block_bio_frontmerge,
294
295         TP_PROTO(struct request_queue *q, struct bio *bio),
296
297         TP_ARGS(q, bio)
298 );
299
300 /**
301  * block_bio_queue - putting new block IO operation in queue
302  * @q: queue holding operation
303  * @bio: new block operation
304  *
305  * About to place the block IO operation @bio into queue @q.
306  */
307 DEFINE_EVENT(block_bio, block_bio_queue,
308
309         TP_PROTO(struct request_queue *q, struct bio *bio),
310
311         TP_ARGS(q, bio)
312 );
313
314 DECLARE_EVENT_CLASS(block_get_rq,
315
316         TP_PROTO(struct request_queue *q, struct bio *bio, int rw),
317
318         TP_ARGS(q, bio, rw),
319
320         TP_STRUCT__entry(
321                 __field( dev_t,         dev                     )
322                 __field( sector_t,      sector                  )
323                 __field( unsigned int,  nr_sector               )
324                 __array( char,          rwbs,   6               )
325                 __array( char,          comm,   TASK_COMM_LEN   )
326         ),
327
328         TP_fast_assign(
329                 __entry->dev            = bio ? bio->bi_bdev->bd_dev : 0;
330                 __entry->sector         = bio ? bio->bi_sector : 0;
331                 __entry->nr_sector      = bio ? bio->bi_size >> 9 : 0;
332                 blk_fill_rwbs(__entry->rwbs,
333                               bio ? bio->bi_rw : 0, __entry->nr_sector);
334                 memcpy(__entry->comm, current->comm, TASK_COMM_LEN);
335         ),
336
337         TP_printk("%d,%d %s %llu + %u [%s]",
338                   MAJOR(__entry->dev), MINOR(__entry->dev), __entry->rwbs,
339                   (unsigned long long)__entry->sector,
340                   __entry->nr_sector, __entry->comm)
341 );
342
343 /**
344  * block_getrq - get a free request entry in queue for block IO operations
345  * @q: queue for operations
346  * @bio: pending block IO operation
347  * @rw: low bit indicates a read (%0) or a write (%1)
348  *
349  * A request struct for queue @q has been allocated to handle the
350  * block IO operation @bio.
351  */
352 DEFINE_EVENT(block_get_rq, block_getrq,
353
354         TP_PROTO(struct request_queue *q, struct bio *bio, int rw),
355
356         TP_ARGS(q, bio, rw)
357 );
358
359 /**
360  * block_sleeprq - waiting to get a free request entry in queue for block IO operation
361  * @q: queue for operation
362  * @bio: pending block IO operation
363  * @rw: low bit indicates a read (%0) or a write (%1)
364  *
365  * In the case where a request struct cannot be provided for queue @q
366  * the process needs to wait for an request struct to become
367  * available.  This tracepoint event is generated each time the
368  * process goes to sleep waiting for request struct become available.
369  */
370 DEFINE_EVENT(block_get_rq, block_sleeprq,
371
372         TP_PROTO(struct request_queue *q, struct bio *bio, int rw),
373
374         TP_ARGS(q, bio, rw)
375 );
376
377 /**
378  * block_plug - keep operations requests in request queue
379  * @q: request queue to plug
380  *
381  * Plug the request queue @q.  Do not allow block operation requests
382  * to be sent to the device driver. Instead, accumulate requests in
383  * the queue to improve throughput performance of the block device.
384  */
385 TRACE_EVENT(block_plug,
386
387         TP_PROTO(struct request_queue *q),
388
389         TP_ARGS(q),
390
391         TP_STRUCT__entry(
392                 __array( char,          comm,   TASK_COMM_LEN   )
393         ),
394
395         TP_fast_assign(
396                 memcpy(__entry->comm, current->comm, TASK_COMM_LEN);
397         ),
398
399         TP_printk("[%s]", __entry->comm)
400 );
401
402 DECLARE_EVENT_CLASS(block_unplug,
403
404         TP_PROTO(struct request_queue *q),
405
406         TP_ARGS(q),
407
408         TP_STRUCT__entry(
409                 __field( int,           nr_rq                   )
410                 __array( char,          comm,   TASK_COMM_LEN   )
411         ),
412
413         TP_fast_assign(
414                 __entry->nr_rq  = q->rq.count[READ] + q->rq.count[WRITE];
415                 memcpy(__entry->comm, current->comm, TASK_COMM_LEN);
416         ),
417
418         TP_printk("[%s] %d", __entry->comm, __entry->nr_rq)
419 );
420
421 /**
422  * block_unplug_timer - timed release of operations requests in queue to device driver
423  * @q: request queue to unplug
424  *
425  * Unplug the request queue @q because a timer expired and allow block
426  * operation requests to be sent to the device driver.
427  */
428 DEFINE_EVENT(block_unplug, block_unplug_timer,
429
430         TP_PROTO(struct request_queue *q),
431
432         TP_ARGS(q)
433 );
434
435 /**
436  * block_unplug_io - release of operations requests in request queue
437  * @q: request queue to unplug
438  *
439  * Unplug request queue @q because device driver is scheduled to work
440  * on elements in the request queue.
441  */
442 DEFINE_EVENT(block_unplug, block_unplug_io,
443
444         TP_PROTO(struct request_queue *q),
445
446         TP_ARGS(q)
447 );
448
449 /**
450  * block_split - split a single bio struct into two bio structs
451  * @q: queue containing the bio
452  * @bio: block operation being split
453  * @new_sector: The starting sector for the new bio
454  *
455  * The bio request @bio in request queue @q needs to be split into two
456  * bio requests. The newly created @bio request starts at
457  * @new_sector. This split may be required due to hardware limitation
458  * such as operation crossing device boundaries in a RAID system.
459  */
460 TRACE_EVENT(block_split,
461
462         TP_PROTO(struct request_queue *q, struct bio *bio,
463                  unsigned int new_sector),
464
465         TP_ARGS(q, bio, new_sector),
466
467         TP_STRUCT__entry(
468                 __field( dev_t,         dev                             )
469                 __field( sector_t,      sector                          )
470                 __field( sector_t,      new_sector                      )
471                 __array( char,          rwbs,           6               )
472                 __array( char,          comm,           TASK_COMM_LEN   )
473         ),
474
475         TP_fast_assign(
476                 __entry->dev            = bio->bi_bdev->bd_dev;
477                 __entry->sector         = bio->bi_sector;
478                 __entry->new_sector     = new_sector;
479                 blk_fill_rwbs(__entry->rwbs, bio->bi_rw, bio->bi_size);
480                 memcpy(__entry->comm, current->comm, TASK_COMM_LEN);
481         ),
482
483         TP_printk("%d,%d %s %llu / %llu [%s]",
484                   MAJOR(__entry->dev), MINOR(__entry->dev), __entry->rwbs,
485                   (unsigned long long)__entry->sector,
486                   (unsigned long long)__entry->new_sector,
487                   __entry->comm)
488 );
489
490 /**
491  * block_bio_remap - map request for a logical device to the raw device
492  * @q: queue holding the operation
493  * @bio: revised operation
494  * @dev: device for the operation
495  * @from: original sector for the operation
496  *
497  * An operation for a logical device has been mapped to the
498  * raw block device.
499  */
500 TRACE_EVENT(block_bio_remap,
501
502         TP_PROTO(struct request_queue *q, struct bio *bio, dev_t dev,
503                  sector_t from),
504
505         TP_ARGS(q, bio, dev, from),
506
507         TP_STRUCT__entry(
508                 __field( dev_t,         dev             )
509                 __field( sector_t,      sector          )
510                 __field( unsigned int,  nr_sector       )
511                 __field( dev_t,         old_dev         )
512                 __field( sector_t,      old_sector      )
513                 __array( char,          rwbs,   6       )
514         ),
515
516         TP_fast_assign(
517                 __entry->dev            = bio->bi_bdev->bd_dev;
518                 __entry->sector         = bio->bi_sector;
519                 __entry->nr_sector      = bio->bi_size >> 9;
520                 __entry->old_dev        = dev;
521                 __entry->old_sector     = from;
522                 blk_fill_rwbs(__entry->rwbs, bio->bi_rw, bio->bi_size);
523         ),
524
525         TP_printk("%d,%d %s %llu + %u <- (%d,%d) %llu",
526                   MAJOR(__entry->dev), MINOR(__entry->dev), __entry->rwbs,
527                   (unsigned long long)__entry->sector,
528                   __entry->nr_sector,
529                   MAJOR(__entry->old_dev), MINOR(__entry->old_dev),
530                   (unsigned long long)__entry->old_sector)
531 );
532
533 /**
534  * block_rq_remap - map request for a block operation request
535  * @q: queue holding the operation
536  * @rq: block IO operation request
537  * @dev: device for the operation
538  * @from: original sector for the operation
539  *
540  * The block operation request @rq in @q has been remapped.  The block
541  * operation request @rq holds the current information and @from hold
542  * the original sector.
543  */
544 TRACE_EVENT(block_rq_remap,
545
546         TP_PROTO(struct request_queue *q, struct request *rq, dev_t dev,
547                  sector_t from),
548
549         TP_ARGS(q, rq, dev, from),
550
551         TP_STRUCT__entry(
552                 __field( dev_t,         dev             )
553                 __field( sector_t,      sector          )
554                 __field( unsigned int,  nr_sector       )
555                 __field( dev_t,         old_dev         )
556                 __field( sector_t,      old_sector      )
557                 __array( char,          rwbs,   6       )
558         ),
559
560         TP_fast_assign(
561                 __entry->dev            = disk_devt(rq->rq_disk);
562                 __entry->sector         = blk_rq_pos(rq);
563                 __entry->nr_sector      = blk_rq_sectors(rq);
564                 __entry->old_dev        = dev;
565                 __entry->old_sector     = from;
566                 blk_fill_rwbs(__entry->rwbs, rq->cmd_flags, blk_rq_bytes(rq));
567         ),
568
569         TP_printk("%d,%d %s %llu + %u <- (%d,%d) %llu",
570                   MAJOR(__entry->dev), MINOR(__entry->dev), __entry->rwbs,
571                   (unsigned long long)__entry->sector,
572                   __entry->nr_sector,
573                   MAJOR(__entry->old_dev), MINOR(__entry->old_dev),
574                   (unsigned long long)__entry->old_sector)
575 );
576
577 #endif /* _TRACE_BLOCK_H */
578
579 /* This part must be outside protection */
580 #include <trace/define_trace.h>
581