2 #define TRACE_SYSTEM block
4 #if !defined(_TRACE_BLOCK_H) || defined(TRACE_HEADER_MULTI_READ)
7 #include <linux/blktrace_api.h>
8 #include <linux/blkdev.h>
9 #include <linux/tracepoint.h>
13 DECLARE_EVENT_CLASS(block_rq_with_error
,
15 TP_PROTO(struct request_queue
*q
, struct request
*rq
),
21 __field( sector_t
, sector
)
22 __field( unsigned int, nr_sector
)
23 __field( int, errors
)
24 __array( char, rwbs
, RWBS_LEN
)
25 __dynamic_array( char, cmd
, blk_cmd_buf_len(rq
) )
29 __entry
->dev
= rq
->rq_disk
? disk_devt(rq
->rq_disk
) : 0;
30 __entry
->sector
= (rq
->cmd_type
== REQ_TYPE_BLOCK_PC
) ?
32 __entry
->nr_sector
= (rq
->cmd_type
== REQ_TYPE_BLOCK_PC
) ?
33 0 : blk_rq_sectors(rq
);
34 __entry
->errors
= rq
->errors
;
36 blk_fill_rwbs(__entry
->rwbs
, rq
->cmd_flags
, blk_rq_bytes(rq
));
37 blk_dump_cmd(__get_str(cmd
), rq
);
40 TP_printk("%d,%d %s (%s) %llu + %u [%d]",
41 MAJOR(__entry
->dev
), MINOR(__entry
->dev
),
42 __entry
->rwbs
, __get_str(cmd
),
43 (unsigned long long)__entry
->sector
,
44 __entry
->nr_sector
, __entry
->errors
)
48 * block_rq_abort - abort block operation request
49 * @q: queue containing the block operation request
50 * @rq: block IO operation request
52 * Called immediately after pending block IO operation request @rq in
53 * queue @q is aborted. The fields in the operation request @rq
54 * can be examined to determine which device and sectors the pending
55 * operation would access.
57 DEFINE_EVENT(block_rq_with_error
, block_rq_abort
,
59 TP_PROTO(struct request_queue
*q
, struct request
*rq
),
65 * block_rq_requeue - place block IO request back on a queue
66 * @q: queue holding operation
67 * @rq: block IO operation request
69 * The block operation request @rq is being placed back into queue
70 * @q. For some reason the request was not completed and needs to be
71 * put back in the queue.
73 DEFINE_EVENT(block_rq_with_error
, block_rq_requeue
,
75 TP_PROTO(struct request_queue
*q
, struct request
*rq
),
81 * block_rq_complete - block IO operation completed by device driver
82 * @q: queue containing the block operation request
83 * @rq: block operations request
85 * The block_rq_complete tracepoint event indicates that some portion
86 * of operation request has been completed by the device driver. If
87 * the @rq->bio is %NULL, then there is absolutely no additional work to
88 * do for the request. If @rq->bio is non-NULL then there is
89 * additional work required to complete the request.
91 DEFINE_EVENT(block_rq_with_error
, block_rq_complete
,
93 TP_PROTO(struct request_queue
*q
, struct request
*rq
),
98 DECLARE_EVENT_CLASS(block_rq
,
100 TP_PROTO(struct request_queue
*q
, struct request
*rq
),
105 __field( dev_t
, dev
)
106 __field( sector_t
, sector
)
107 __field( unsigned int, nr_sector
)
108 __field( unsigned int, bytes
)
109 __array( char, rwbs
, RWBS_LEN
)
110 __array( char, comm
, TASK_COMM_LEN
)
111 __dynamic_array( char, cmd
, blk_cmd_buf_len(rq
) )
115 __entry
->dev
= rq
->rq_disk
? disk_devt(rq
->rq_disk
) : 0;
116 __entry
->sector
= (rq
->cmd_type
== REQ_TYPE_BLOCK_PC
) ?
118 __entry
->nr_sector
= (rq
->cmd_type
== REQ_TYPE_BLOCK_PC
) ?
119 0 : blk_rq_sectors(rq
);
120 __entry
->bytes
= (rq
->cmd_type
== REQ_TYPE_BLOCK_PC
) ?
121 blk_rq_bytes(rq
) : 0;
123 blk_fill_rwbs(__entry
->rwbs
, rq
->cmd_flags
, blk_rq_bytes(rq
));
124 blk_dump_cmd(__get_str(cmd
), rq
);
125 memcpy(__entry
->comm
, current
->comm
, TASK_COMM_LEN
);
128 TP_printk("%d,%d %s %u (%s) %llu + %u [%s]",
129 MAJOR(__entry
->dev
), MINOR(__entry
->dev
),
130 __entry
->rwbs
, __entry
->bytes
, __get_str(cmd
),
131 (unsigned long long)__entry
->sector
,
132 __entry
->nr_sector
, __entry
->comm
)
136 * block_rq_insert - insert block operation request into queue
138 * @rq: block IO operation request
140 * Called immediately before block operation request @rq is inserted
141 * into queue @q. The fields in the operation request @rq struct can
142 * be examined to determine which device and sectors the pending
143 * operation would access.
145 DEFINE_EVENT(block_rq
, block_rq_insert
,
147 TP_PROTO(struct request_queue
*q
, struct request
*rq
),
153 * block_rq_issue - issue pending block IO request operation to device driver
154 * @q: queue holding operation
155 * @rq: block IO operation operation request
157 * Called when block operation request @rq from queue @q is sent to a
158 * device driver for processing.
160 DEFINE_EVENT(block_rq
, block_rq_issue
,
162 TP_PROTO(struct request_queue
*q
, struct request
*rq
),
168 * block_bio_bounce - used bounce buffer when processing block operation
169 * @q: queue holding the block operation
170 * @bio: block operation
172 * A bounce buffer was used to handle the block operation @bio in @q.
173 * This occurs when hardware limitations prevent a direct transfer of
174 * data between the @bio data memory area and the IO device. Use of a
175 * bounce buffer requires extra copying of data and decreases
178 TRACE_EVENT(block_bio_bounce
,
180 TP_PROTO(struct request_queue
*q
, struct bio
*bio
),
185 __field( dev_t
, dev
)
186 __field( sector_t
, sector
)
187 __field( unsigned int, nr_sector
)
188 __array( char, rwbs
, RWBS_LEN
)
189 __array( char, comm
, TASK_COMM_LEN
)
193 __entry
->dev
= bio
->bi_bdev
?
194 bio
->bi_bdev
->bd_dev
: 0;
195 __entry
->sector
= bio
->bi_sector
;
196 __entry
->nr_sector
= bio
->bi_size
>> 9;
197 blk_fill_rwbs(__entry
->rwbs
, bio
->bi_rw
, bio
->bi_size
);
198 memcpy(__entry
->comm
, current
->comm
, TASK_COMM_LEN
);
201 TP_printk("%d,%d %s %llu + %u [%s]",
202 MAJOR(__entry
->dev
), MINOR(__entry
->dev
), __entry
->rwbs
,
203 (unsigned long long)__entry
->sector
,
204 __entry
->nr_sector
, __entry
->comm
)
208 * block_bio_complete - completed all work on the block operation
209 * @q: queue holding the block operation
210 * @bio: block operation completed
211 * @error: io error value
213 * This tracepoint indicates there is no further work to do on this
214 * block IO operation @bio.
216 TRACE_EVENT(block_bio_complete
,
218 TP_PROTO(struct request_queue
*q
, struct bio
*bio
, int error
),
220 TP_ARGS(q
, bio
, error
),
223 __field( dev_t
, dev
)
224 __field( sector_t
, sector
)
225 __field( unsigned, nr_sector
)
226 __field( int, error
)
227 __array( char, rwbs
, RWBS_LEN
)
231 __entry
->dev
= bio
->bi_bdev
->bd_dev
;
232 __entry
->sector
= bio
->bi_sector
;
233 __entry
->nr_sector
= bio
->bi_size
>> 9;
234 __entry
->error
= error
;
235 blk_fill_rwbs(__entry
->rwbs
, bio
->bi_rw
, bio
->bi_size
);
238 TP_printk("%d,%d %s %llu + %u [%d]",
239 MAJOR(__entry
->dev
), MINOR(__entry
->dev
), __entry
->rwbs
,
240 (unsigned long long)__entry
->sector
,
241 __entry
->nr_sector
, __entry
->error
)
244 DECLARE_EVENT_CLASS(block_bio
,
246 TP_PROTO(struct request_queue
*q
, struct bio
*bio
),
251 __field( dev_t
, dev
)
252 __field( sector_t
, sector
)
253 __field( unsigned int, nr_sector
)
254 __array( char, rwbs
, RWBS_LEN
)
255 __array( char, comm
, TASK_COMM_LEN
)
259 __entry
->dev
= bio
->bi_bdev
->bd_dev
;
260 __entry
->sector
= bio
->bi_sector
;
261 __entry
->nr_sector
= bio
->bi_size
>> 9;
262 blk_fill_rwbs(__entry
->rwbs
, bio
->bi_rw
, bio
->bi_size
);
263 memcpy(__entry
->comm
, current
->comm
, TASK_COMM_LEN
);
266 TP_printk("%d,%d %s %llu + %u [%s]",
267 MAJOR(__entry
->dev
), MINOR(__entry
->dev
), __entry
->rwbs
,
268 (unsigned long long)__entry
->sector
,
269 __entry
->nr_sector
, __entry
->comm
)
273 * block_bio_backmerge - merging block operation to the end of an existing operation
274 * @q: queue holding operation
275 * @bio: new block operation to merge
277 * Merging block request @bio to the end of an existing block request
280 DEFINE_EVENT(block_bio
, block_bio_backmerge
,
282 TP_PROTO(struct request_queue
*q
, struct bio
*bio
),
288 * block_bio_frontmerge - merging block operation to the beginning of an existing operation
289 * @q: queue holding operation
290 * @bio: new block operation to merge
292 * Merging block IO operation @bio to the beginning of an existing block
293 * operation in queue @q.
295 DEFINE_EVENT(block_bio
, block_bio_frontmerge
,
297 TP_PROTO(struct request_queue
*q
, struct bio
*bio
),
303 * block_bio_queue - putting new block IO operation in queue
304 * @q: queue holding operation
305 * @bio: new block operation
307 * About to place the block IO operation @bio into queue @q.
309 DEFINE_EVENT(block_bio
, block_bio_queue
,
311 TP_PROTO(struct request_queue
*q
, struct bio
*bio
),
316 DECLARE_EVENT_CLASS(block_get_rq
,
318 TP_PROTO(struct request_queue
*q
, struct bio
*bio
, int rw
),
323 __field( dev_t
, dev
)
324 __field( sector_t
, sector
)
325 __field( unsigned int, nr_sector
)
326 __array( char, rwbs
, RWBS_LEN
)
327 __array( char, comm
, TASK_COMM_LEN
)
331 __entry
->dev
= bio
? bio
->bi_bdev
->bd_dev
: 0;
332 __entry
->sector
= bio
? bio
->bi_sector
: 0;
333 __entry
->nr_sector
= bio
? bio
->bi_size
>> 9 : 0;
334 blk_fill_rwbs(__entry
->rwbs
,
335 bio
? bio
->bi_rw
: 0, __entry
->nr_sector
);
336 memcpy(__entry
->comm
, current
->comm
, TASK_COMM_LEN
);
339 TP_printk("%d,%d %s %llu + %u [%s]",
340 MAJOR(__entry
->dev
), MINOR(__entry
->dev
), __entry
->rwbs
,
341 (unsigned long long)__entry
->sector
,
342 __entry
->nr_sector
, __entry
->comm
)
346 * block_getrq - get a free request entry in queue for block IO operations
347 * @q: queue for operations
348 * @bio: pending block IO operation
349 * @rw: low bit indicates a read (%0) or a write (%1)
351 * A request struct for queue @q has been allocated to handle the
352 * block IO operation @bio.
354 DEFINE_EVENT(block_get_rq
, block_getrq
,
356 TP_PROTO(struct request_queue
*q
, struct bio
*bio
, int rw
),
362 * block_sleeprq - waiting to get a free request entry in queue for block IO operation
363 * @q: queue for operation
364 * @bio: pending block IO operation
365 * @rw: low bit indicates a read (%0) or a write (%1)
367 * In the case where a request struct cannot be provided for queue @q
368 * the process needs to wait for an request struct to become
369 * available. This tracepoint event is generated each time the
370 * process goes to sleep waiting for request struct become available.
372 DEFINE_EVENT(block_get_rq
, block_sleeprq
,
374 TP_PROTO(struct request_queue
*q
, struct bio
*bio
, int rw
),
380 * block_plug - keep operations requests in request queue
381 * @q: request queue to plug
383 * Plug the request queue @q. Do not allow block operation requests
384 * to be sent to the device driver. Instead, accumulate requests in
385 * the queue to improve throughput performance of the block device.
387 TRACE_EVENT(block_plug
,
389 TP_PROTO(struct request_queue
*q
),
394 __array( char, comm
, TASK_COMM_LEN
)
398 memcpy(__entry
->comm
, current
->comm
, TASK_COMM_LEN
);
401 TP_printk("[%s]", __entry
->comm
)
404 DECLARE_EVENT_CLASS(block_unplug
,
406 TP_PROTO(struct request_queue
*q
, unsigned int depth
, bool explicit),
408 TP_ARGS(q
, depth
, explicit),
411 __field( int, nr_rq
)
412 __array( char, comm
, TASK_COMM_LEN
)
416 __entry
->nr_rq
= depth
;
417 memcpy(__entry
->comm
, current
->comm
, TASK_COMM_LEN
);
420 TP_printk("[%s] %d", __entry
->comm
, __entry
->nr_rq
)
424 * block_unplug - release of operations requests in request queue
425 * @q: request queue to unplug
426 * @depth: number of requests just added to the queue
427 * @explicit: whether this was an explicit unplug, or one from schedule()
429 * Unplug request queue @q because device driver is scheduled to work
430 * on elements in the request queue.
432 DEFINE_EVENT(block_unplug
, block_unplug
,
434 TP_PROTO(struct request_queue
*q
, unsigned int depth
, bool explicit),
436 TP_ARGS(q
, depth
, explicit)
440 * block_split - split a single bio struct into two bio structs
441 * @q: queue containing the bio
442 * @bio: block operation being split
443 * @new_sector: The starting sector for the new bio
445 * The bio request @bio in request queue @q needs to be split into two
446 * bio requests. The newly created @bio request starts at
447 * @new_sector. This split may be required due to hardware limitation
448 * such as operation crossing device boundaries in a RAID system.
450 TRACE_EVENT(block_split
,
452 TP_PROTO(struct request_queue
*q
, struct bio
*bio
,
453 unsigned int new_sector
),
455 TP_ARGS(q
, bio
, new_sector
),
458 __field( dev_t
, dev
)
459 __field( sector_t
, sector
)
460 __field( sector_t
, new_sector
)
461 __array( char, rwbs
, RWBS_LEN
)
462 __array( char, comm
, TASK_COMM_LEN
)
466 __entry
->dev
= bio
->bi_bdev
->bd_dev
;
467 __entry
->sector
= bio
->bi_sector
;
468 __entry
->new_sector
= new_sector
;
469 blk_fill_rwbs(__entry
->rwbs
, bio
->bi_rw
, bio
->bi_size
);
470 memcpy(__entry
->comm
, current
->comm
, TASK_COMM_LEN
);
473 TP_printk("%d,%d %s %llu / %llu [%s]",
474 MAJOR(__entry
->dev
), MINOR(__entry
->dev
), __entry
->rwbs
,
475 (unsigned long long)__entry
->sector
,
476 (unsigned long long)__entry
->new_sector
,
481 * block_bio_remap - map request for a logical device to the raw device
482 * @q: queue holding the operation
483 * @bio: revised operation
484 * @dev: device for the operation
485 * @from: original sector for the operation
487 * An operation for a logical device has been mapped to the
490 TRACE_EVENT(block_bio_remap
,
492 TP_PROTO(struct request_queue
*q
, struct bio
*bio
, dev_t dev
,
495 TP_ARGS(q
, bio
, dev
, from
),
498 __field( dev_t
, dev
)
499 __field( sector_t
, sector
)
500 __field( unsigned int, nr_sector
)
501 __field( dev_t
, old_dev
)
502 __field( sector_t
, old_sector
)
503 __array( char, rwbs
, RWBS_LEN
)
507 __entry
->dev
= bio
->bi_bdev
->bd_dev
;
508 __entry
->sector
= bio
->bi_sector
;
509 __entry
->nr_sector
= bio
->bi_size
>> 9;
510 __entry
->old_dev
= dev
;
511 __entry
->old_sector
= from
;
512 blk_fill_rwbs(__entry
->rwbs
, bio
->bi_rw
, bio
->bi_size
);
515 TP_printk("%d,%d %s %llu + %u <- (%d,%d) %llu",
516 MAJOR(__entry
->dev
), MINOR(__entry
->dev
), __entry
->rwbs
,
517 (unsigned long long)__entry
->sector
,
519 MAJOR(__entry
->old_dev
), MINOR(__entry
->old_dev
),
520 (unsigned long long)__entry
->old_sector
)
524 * block_rq_remap - map request for a block operation request
525 * @q: queue holding the operation
526 * @rq: block IO operation request
527 * @dev: device for the operation
528 * @from: original sector for the operation
530 * The block operation request @rq in @q has been remapped. The block
531 * operation request @rq holds the current information and @from hold
532 * the original sector.
534 TRACE_EVENT(block_rq_remap
,
536 TP_PROTO(struct request_queue
*q
, struct request
*rq
, dev_t dev
,
539 TP_ARGS(q
, rq
, dev
, from
),
542 __field( dev_t
, dev
)
543 __field( sector_t
, sector
)
544 __field( unsigned int, nr_sector
)
545 __field( dev_t
, old_dev
)
546 __field( sector_t
, old_sector
)
547 __array( char, rwbs
, RWBS_LEN
)
551 __entry
->dev
= disk_devt(rq
->rq_disk
);
552 __entry
->sector
= blk_rq_pos(rq
);
553 __entry
->nr_sector
= blk_rq_sectors(rq
);
554 __entry
->old_dev
= dev
;
555 __entry
->old_sector
= from
;
556 blk_fill_rwbs(__entry
->rwbs
, rq
->cmd_flags
, blk_rq_bytes(rq
));
559 TP_printk("%d,%d %s %llu + %u <- (%d,%d) %llu",
560 MAJOR(__entry
->dev
), MINOR(__entry
->dev
), __entry
->rwbs
,
561 (unsigned long long)__entry
->sector
,
563 MAJOR(__entry
->old_dev
), MINOR(__entry
->old_dev
),
564 (unsigned long long)__entry
->old_sector
)
567 #endif /* _TRACE_BLOCK_H */
569 /* This part must be outside protection */
570 #include <trace/define_trace.h>
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