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>
10 #include <linux/trace_seq.h>
11 #include <linux/version.h>
15 #ifndef _TRACE_BLOCK_DEF_
16 #define _TRACE_BLOCK_DEF_
18 #define __blk_dump_cmd(cmd, len) "<unknown>"
21 RWBS_FLAG_WRITE
= (1 << 0),
22 RWBS_FLAG_DISCARD
= (1 << 1),
23 RWBS_FLAG_READ
= (1 << 2),
24 RWBS_FLAG_RAHEAD
= (1 << 3),
25 RWBS_FLAG_BARRIER
= (1 << 4),
26 RWBS_FLAG_SYNC
= (1 << 5),
27 RWBS_FLAG_META
= (1 << 6),
28 RWBS_FLAG_SECURE
= (1 << 7),
29 RWBS_FLAG_FLUSH
= (1 << 8),
30 RWBS_FLAG_FUA
= (1 << 9),
33 #endif /* _TRACE_BLOCK_DEF_ */
35 #define __print_rwbs_flags(rwbs) \
36 __print_flags(rwbs, "", \
37 { RWBS_FLAG_FLUSH, "F" }, \
38 { RWBS_FLAG_WRITE, "W" }, \
39 { RWBS_FLAG_DISCARD, "D" }, \
40 { RWBS_FLAG_READ, "R" }, \
41 { RWBS_FLAG_FUA, "F" }, \
42 { RWBS_FLAG_RAHEAD, "A" }, \
43 { RWBS_FLAG_BARRIER, "B" }, \
44 { RWBS_FLAG_SYNC, "S" }, \
45 { RWBS_FLAG_META, "M" }, \
46 { RWBS_FLAG_SECURE, "E" })
48 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,1,0))
50 #define blk_fill_rwbs(rwbs, rw, bytes) \
51 tp_assign(rwbs, ((rw) & WRITE ? RWBS_FLAG_WRITE : \
52 ( (rw) & REQ_DISCARD ? RWBS_FLAG_DISCARD : \
53 ( (bytes) ? RWBS_FLAG_READ : \
55 | ((rw) & REQ_RAHEAD ? RWBS_FLAG_RAHEAD : 0) \
56 | ((rw) & REQ_SYNC ? RWBS_FLAG_SYNC : 0) \
57 | ((rw) & REQ_META ? RWBS_FLAG_META : 0) \
58 | ((rw) & REQ_SECURE ? RWBS_FLAG_SECURE : 0) \
59 | ((rw) & REQ_FLUSH ? RWBS_FLAG_FLUSH : 0) \
60 | ((rw) & REQ_FUA ? RWBS_FLAG_FUA : 0))
62 #elif (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,37))
64 #define blk_fill_rwbs(rwbs, rw, bytes) \
65 tp_assign(rwbs, ((rw) & WRITE ? RWBS_FLAG_WRITE : \
66 ( (rw) & REQ_DISCARD ? RWBS_FLAG_DISCARD : \
67 ( (bytes) ? RWBS_FLAG_READ : \
69 | ((rw) & REQ_RAHEAD ? RWBS_FLAG_RAHEAD : 0) \
70 | ((rw) & REQ_SYNC ? RWBS_FLAG_SYNC : 0) \
71 | ((rw) & REQ_META ? RWBS_FLAG_META : 0) \
72 | ((rw) & REQ_SECURE ? RWBS_FLAG_SECURE : 0))
74 #elif (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,36))
76 #define blk_fill_rwbs(rwbs, rw, bytes) \
77 tp_assign(rwbs, ((rw) & WRITE ? RWBS_FLAG_WRITE : \
78 ( (rw) & REQ_DISCARD ? RWBS_FLAG_DISCARD : \
79 ( (bytes) ? RWBS_FLAG_READ : \
81 | ((rw) & REQ_RAHEAD ? RWBS_FLAG_RAHEAD : 0) \
82 | ((rw) & REQ_HARDBARRIER ? RWBS_FLAG_BARRIER : 0) \
83 | ((rw) & REQ_SYNC ? RWBS_FLAG_SYNC : 0) \
84 | ((rw) & REQ_META ? RWBS_FLAG_META : 0) \
85 | ((rw) & REQ_SECURE ? RWBS_FLAG_SECURE : 0))
89 #define blk_fill_rwbs(rwbs, rw, bytes) \
90 tp_assign(rwbs, ((rw) & WRITE ? RWBS_FLAG_WRITE : \
91 ( (rw) & (1 << BIO_RW_DISCARD) ? RWBS_FLAG_DISCARD : \
92 ( (bytes) ? RWBS_FLAG_READ : \
94 | ((rw) & (1 << BIO_RW_AHEAD) ? RWBS_FLAG_RAHEAD : 0) \
95 | ((rw) & (1 << BIO_RW_SYNCIO) ? RWBS_FLAG_SYNC : 0) \
96 | ((rw) & (1 << BIO_RW_META) ? RWBS_FLAG_META : 0) \
97 | ((rw) & (1 << BIO_RW_BARRIER) ? RWBS_FLAG_BARRIER : 0))
101 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,9,0))
102 DECLARE_EVENT_CLASS(block_buffer
,
104 TP_PROTO(struct buffer_head
*bh
),
109 __field( dev_t
, dev
)
110 __field( sector_t
, sector
)
111 __field( size_t, size
)
115 tp_assign(dev
, bh
->b_bdev
->bd_dev
)
116 tp_assign(sector
, bh
->b_blocknr
)
117 tp_assign(size
, bh
->b_size
)
120 TP_printk("%d,%d sector=%llu size=%zu",
121 MAJOR(__entry
->dev
), MINOR(__entry
->dev
),
122 (unsigned long long)__entry
->sector
, __entry
->size
127 * block_touch_buffer - mark a buffer accessed
128 * @bh: buffer_head being touched
130 * Called from touch_buffer().
132 DEFINE_EVENT(block_buffer
, block_touch_buffer
,
134 TP_PROTO(struct buffer_head
*bh
),
140 * block_dirty_buffer - mark a buffer dirty
141 * @bh: buffer_head being dirtied
143 * Called from mark_buffer_dirty().
145 DEFINE_EVENT(block_buffer
, block_dirty_buffer
,
147 TP_PROTO(struct buffer_head
*bh
),
153 DECLARE_EVENT_CLASS(block_rq_with_error
,
155 TP_PROTO(struct request_queue
*q
, struct request
*rq
),
160 __field( dev_t
, dev
)
161 __field( sector_t
, sector
)
162 __field( unsigned int, nr_sector
)
163 __field( int, errors
)
164 __field( unsigned int, rwbs
)
165 __dynamic_array_hex( unsigned char, cmd
,
166 (rq
->cmd_type
== REQ_TYPE_BLOCK_PC
) ?
171 tp_assign(dev
, rq
->rq_disk
? disk_devt(rq
->rq_disk
) : 0)
172 tp_assign(sector
, (rq
->cmd_type
== REQ_TYPE_BLOCK_PC
) ?
174 tp_assign(nr_sector
, (rq
->cmd_type
== REQ_TYPE_BLOCK_PC
) ?
175 0 : blk_rq_sectors(rq
))
176 tp_assign(errors
, rq
->errors
)
177 blk_fill_rwbs(rwbs
, rq
->cmd_flags
, blk_rq_bytes(rq
))
178 tp_memcpy_dyn(cmd
, (rq
->cmd_type
== REQ_TYPE_BLOCK_PC
) ?
182 TP_printk("%d,%d %s (%s) %llu + %u [%d]",
183 MAJOR(__entry
->dev
), MINOR(__entry
->dev
),
184 __print_rwbs_flags(__entry
->rwbs
),
185 __blk_dump_cmd(__get_dynamic_array(cmd
),
186 __get_dynamic_array_len(cmd
)),
187 (unsigned long long)__entry
->sector
,
188 __entry
->nr_sector
, __entry
->errors
)
192 * block_rq_abort - abort block operation request
193 * @q: queue containing the block operation request
194 * @rq: block IO operation request
196 * Called immediately after pending block IO operation request @rq in
197 * queue @q is aborted. The fields in the operation request @rq
198 * can be examined to determine which device and sectors the pending
199 * operation would access.
201 DEFINE_EVENT(block_rq_with_error
, block_rq_abort
,
203 TP_PROTO(struct request_queue
*q
, struct request
*rq
),
209 * block_rq_requeue - place block IO request back on a queue
210 * @q: queue holding operation
211 * @rq: block IO operation request
213 * The block operation request @rq is being placed back into queue
214 * @q. For some reason the request was not completed and needs to be
215 * put back in the queue.
217 DEFINE_EVENT(block_rq_with_error
, block_rq_requeue
,
219 TP_PROTO(struct request_queue
*q
, struct request
*rq
),
224 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,15,0))
227 * block_rq_complete - block IO operation completed by device driver
228 * @q: queue containing the block operation request
229 * @rq: block operations request
230 * @nr_bytes: number of completed bytes
232 * The block_rq_complete tracepoint event indicates that some portion
233 * of operation request has been completed by the device driver. If
234 * the @rq->bio is %NULL, then there is absolutely no additional work to
235 * do for the request. If @rq->bio is non-NULL then there is
236 * additional work required to complete the request.
238 TRACE_EVENT(block_rq_complete
,
240 TP_PROTO(struct request_queue
*q
, struct request
*rq
,
241 unsigned int nr_bytes
),
243 TP_ARGS(q
, rq
, nr_bytes
),
246 __field( dev_t
, dev
)
247 __field( sector_t
, sector
)
248 __field( unsigned int, nr_sector
)
249 __field( int, errors
)
250 __field( unsigned int, rwbs
)
251 __dynamic_array_hex( unsigned char, cmd
,
252 (rq
->cmd_type
== REQ_TYPE_BLOCK_PC
) ?
257 tp_assign(dev
, rq
->rq_disk
? disk_devt(rq
->rq_disk
) : 0)
258 tp_assign(sector
, blk_rq_pos(rq
))
259 tp_assign(nr_sector
, nr_bytes
>> 9)
260 tp_assign(errors
, rq
->errors
)
261 blk_fill_rwbs(rwbs
, rq
->cmd_flags
, nr_bytes
)
262 tp_memcpy_dyn(cmd
, (rq
->cmd_type
== REQ_TYPE_BLOCK_PC
) ?
266 TP_printk("%d,%d %s (%s) %llu + %u [%d]",
267 MAJOR(__entry
->dev
), MINOR(__entry
->dev
),
268 __entry
->rwbs
, __get_str(cmd
),
269 (unsigned long long)__entry
->sector
,
270 __entry
->nr_sector
, __entry
->errors
)
273 #else /* #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,15,0)) */
276 * block_rq_complete - block IO operation completed by device driver
277 * @q: queue containing the block operation request
278 * @rq: block operations request
280 * The block_rq_complete tracepoint event indicates that some portion
281 * of operation request has been completed by the device driver. If
282 * the @rq->bio is %NULL, then there is absolutely no additional work to
283 * do for the request. If @rq->bio is non-NULL then there is
284 * additional work required to complete the request.
286 DEFINE_EVENT(block_rq_with_error
, block_rq_complete
,
288 TP_PROTO(struct request_queue
*q
, struct request
*rq
),
293 #endif /* #else #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,15,0)) */
295 DECLARE_EVENT_CLASS(block_rq
,
297 TP_PROTO(struct request_queue
*q
, struct request
*rq
),
302 __field( dev_t
, dev
)
303 __field( sector_t
, sector
)
304 __field( unsigned int, nr_sector
)
305 __field( unsigned int, bytes
)
306 __field( unsigned int, rwbs
)
307 __array_text( char, comm
, TASK_COMM_LEN
)
308 __dynamic_array_hex( unsigned char, cmd
,
309 (rq
->cmd_type
== REQ_TYPE_BLOCK_PC
) ?
314 tp_assign(dev
, rq
->rq_disk
? disk_devt(rq
->rq_disk
) : 0)
315 tp_assign(sector
, (rq
->cmd_type
== REQ_TYPE_BLOCK_PC
) ?
317 tp_assign(nr_sector
, (rq
->cmd_type
== REQ_TYPE_BLOCK_PC
) ?
318 0 : blk_rq_sectors(rq
))
319 tp_assign(bytes
, (rq
->cmd_type
== REQ_TYPE_BLOCK_PC
) ?
320 blk_rq_bytes(rq
) : 0)
321 blk_fill_rwbs(rwbs
, rq
->cmd_flags
, blk_rq_bytes(rq
))
322 tp_memcpy_dyn(cmd
, (rq
->cmd_type
== REQ_TYPE_BLOCK_PC
) ?
324 tp_memcpy(comm
, current
->comm
, TASK_COMM_LEN
)
327 TP_printk("%d,%d %s %u (%s) %llu + %u [%s]",
328 MAJOR(__entry
->dev
), MINOR(__entry
->dev
),
329 __print_rwbs_flags(__entry
->rwbs
),
331 __blk_dump_cmd(__get_dynamic_array(cmd
),
332 __get_dynamic_array_len(cmd
)),
333 (unsigned long long)__entry
->sector
,
334 __entry
->nr_sector
, __entry
->comm
)
338 * block_rq_insert - insert block operation request into queue
340 * @rq: block IO operation request
342 * Called immediately before block operation request @rq is inserted
343 * into queue @q. The fields in the operation request @rq struct can
344 * be examined to determine which device and sectors the pending
345 * operation would access.
347 DEFINE_EVENT(block_rq
, block_rq_insert
,
349 TP_PROTO(struct request_queue
*q
, struct request
*rq
),
355 * block_rq_issue - issue pending block IO request operation to device driver
356 * @q: queue holding operation
357 * @rq: block IO operation operation request
359 * Called when block operation request @rq from queue @q is sent to a
360 * device driver for processing.
362 DEFINE_EVENT(block_rq
, block_rq_issue
,
364 TP_PROTO(struct request_queue
*q
, struct request
*rq
),
370 * block_bio_bounce - used bounce buffer when processing block operation
371 * @q: queue holding the block operation
372 * @bio: block operation
374 * A bounce buffer was used to handle the block operation @bio in @q.
375 * This occurs when hardware limitations prevent a direct transfer of
376 * data between the @bio data memory area and the IO device. Use of a
377 * bounce buffer requires extra copying of data and decreases
380 TRACE_EVENT(block_bio_bounce
,
382 TP_PROTO(struct request_queue
*q
, struct bio
*bio
),
387 __field( dev_t
, dev
)
388 __field( sector_t
, sector
)
389 __field( unsigned int, nr_sector
)
390 __field( unsigned int, rwbs
)
391 __array_text( char, comm
, TASK_COMM_LEN
)
395 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,14,0))
396 tp_assign(dev
, bio
->bi_bdev
?
397 bio
->bi_bdev
->bd_dev
: 0)
398 tp_assign(sector
, bio
->bi_iter
.bi_sector
)
399 tp_assign(nr_sector
, bio_sectors(bio
))
400 blk_fill_rwbs(rwbs
, bio
->bi_rw
, bio
->bi_iter
.bi_size
)
401 tp_memcpy(comm
, current
->comm
, TASK_COMM_LEN
)
402 #else /* #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,14,0)) */
403 tp_assign(dev
, bio
->bi_bdev
?
404 bio
->bi_bdev
->bd_dev
: 0)
405 tp_assign(sector
, bio
->bi_sector
)
406 tp_assign(nr_sector
, bio
->bi_size
>> 9)
407 blk_fill_rwbs(rwbs
, bio
->bi_rw
, bio
->bi_size
)
408 tp_memcpy(comm
, current
->comm
, TASK_COMM_LEN
)
409 #endif /* #else #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,14,0)) */
412 TP_printk("%d,%d %s %llu + %u [%s]",
413 MAJOR(__entry
->dev
), MINOR(__entry
->dev
),
414 __print_rwbs_flags(__entry
->rwbs
),
415 (unsigned long long)__entry
->sector
,
416 __entry
->nr_sector
, __entry
->comm
)
420 * block_bio_complete - completed all work on the block operation
421 * @q: queue holding the block operation
422 * @bio: block operation completed
423 * @error: io error value
425 * This tracepoint indicates there is no further work to do on this
426 * block IO operation @bio.
428 TRACE_EVENT(block_bio_complete
,
430 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,38))
431 TP_PROTO(struct request_queue
*q
, struct bio
*bio
, int error
),
433 TP_ARGS(q
, bio
, error
),
435 TP_PROTO(struct request_queue
*q
, struct bio
*bio
),
441 __field( dev_t
, dev
)
442 __field( sector_t
, sector
)
443 __field( unsigned, nr_sector
)
444 __field( int, error
)
445 __field( unsigned int, rwbs
)
449 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,14,0))
450 tp_assign(dev
, bio
->bi_bdev
->bd_dev
)
451 tp_assign(sector
, bio
->bi_iter
.bi_sector
)
452 tp_assign(nr_sector
, bio_sectors(bio
))
453 tp_assign(error
, error
)
454 blk_fill_rwbs(rwbs
, bio
->bi_rw
, bio
->bi_iter
.bi_size
)
455 #else /* #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,14,0)) */
456 tp_assign(dev
, bio
->bi_bdev
->bd_dev
)
457 tp_assign(sector
, bio
->bi_sector
)
458 tp_assign(nr_sector
, bio
->bi_size
>> 9)
459 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,38))
460 tp_assign(error
, error
)
464 blk_fill_rwbs(rwbs
, bio
->bi_rw
, bio
->bi_size
)
465 #endif /* #else #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,14,0)) */
468 TP_printk("%d,%d %s %llu + %u [%d]",
469 MAJOR(__entry
->dev
), MINOR(__entry
->dev
),
470 __print_rwbs_flags(__entry
->rwbs
),
471 (unsigned long long)__entry
->sector
,
472 __entry
->nr_sector
, __entry
->error
)
475 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,9,0))
476 DECLARE_EVENT_CLASS(block_bio_merge
,
478 TP_PROTO(struct request_queue
*q
, struct request
*rq
, struct bio
*bio
),
483 __field( dev_t
, dev
)
484 __field( sector_t
, sector
)
485 __field( unsigned int, nr_sector
)
486 __field( unsigned int, rwbs
)
487 __array_text( char, comm
, TASK_COMM_LEN
)
491 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,14,0))
492 tp_assign(dev
, bio
->bi_bdev
->bd_dev
)
493 tp_assign(sector
, bio
->bi_iter
.bi_sector
)
494 tp_assign(nr_sector
, bio_sectors(bio
))
495 blk_fill_rwbs(rwbs
, bio
->bi_rw
, bio
->bi_iter
.bi_size
)
496 tp_memcpy(comm
, current
->comm
, TASK_COMM_LEN
)
497 #else /* #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,14,0)) */
498 tp_assign(dev
, bio
->bi_bdev
->bd_dev
)
499 tp_assign(sector
, bio
->bi_sector
)
500 tp_assign(nr_sector
, bio
->bi_size
>> 9)
501 blk_fill_rwbs(rwbs
, bio
->bi_rw
, bio
->bi_size
)
502 tp_memcpy(comm
, current
->comm
, TASK_COMM_LEN
)
503 #endif /* #else #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,14,0)) */
506 TP_printk("%d,%d %s %llu + %u [%s]",
507 MAJOR(__entry
->dev
), MINOR(__entry
->dev
),
508 __print_rwbs_flags(__entry
->rwbs
),
509 (unsigned long long)__entry
->sector
,
510 __entry
->nr_sector
, __entry
->comm
)
514 * block_bio_backmerge - merging block operation to the end of an existing operation
515 * @q: queue holding operation
516 * @bio: new block operation to merge
518 * Merging block request @bio to the end of an existing block request
521 DEFINE_EVENT(block_bio_merge
, block_bio_backmerge
,
523 TP_PROTO(struct request_queue
*q
, struct request
*rq
, struct bio
*bio
),
529 * block_bio_frontmerge - merging block operation to the beginning of an existing operation
530 * @q: queue holding operation
531 * @bio: new block operation to merge
533 * Merging block IO operation @bio to the beginning of an existing block
534 * operation in queue @q.
536 DEFINE_EVENT(block_bio_merge
, block_bio_frontmerge
,
538 TP_PROTO(struct request_queue
*q
, struct request
*rq
, struct bio
*bio
),
544 * block_bio_queue - putting new block IO operation in queue
545 * @q: queue holding operation
546 * @bio: new block operation
548 * About to place the block IO operation @bio into queue @q.
550 TRACE_EVENT(block_bio_queue
,
552 TP_PROTO(struct request_queue
*q
, struct bio
*bio
),
557 __field( dev_t
, dev
)
558 __field( sector_t
, sector
)
559 __field( unsigned int, nr_sector
)
560 __array( char, rwbs
, RWBS_LEN
)
561 __array( char, comm
, TASK_COMM_LEN
)
565 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,14,0))
566 tp_assign(dev
, bio
->bi_bdev
->bd_dev
)
567 tp_assign(sector
, bio
->bi_iter
.bi_sector
)
568 tp_assign(nr_sector
, bio_sectors(bio
))
569 blk_fill_rwbs(rwbs
, bio
->bi_rw
, bio
->bi_iter
.bi_size
)
570 tp_memcpy(comm
, current
->comm
, TASK_COMM_LEN
)
571 #else /* #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,14,0)) */
572 tp_assign(dev
, bio
->bi_bdev
->bd_dev
)
573 tp_assign(sector
, bio
->bi_sector
)
574 tp_assign(nr_sector
, bio
->bi_size
>> 9)
575 blk_fill_rwbs(rwbs
, bio
->bi_rw
, bio
->bi_size
)
576 tp_memcpy(comm
, current
->comm
, TASK_COMM_LEN
)
577 #endif /* #else #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,14,0)) */
580 TP_printk("%d,%d %s %llu + %u [%s]",
581 MAJOR(__entry
->dev
), MINOR(__entry
->dev
), __entry
->rwbs
,
582 (unsigned long long)__entry
->sector
,
583 __entry
->nr_sector
, __entry
->comm
)
586 DECLARE_EVENT_CLASS(block_bio
,
588 TP_PROTO(struct request_queue
*q
, struct bio
*bio
),
593 __field( dev_t
, dev
)
594 __field( sector_t
, sector
)
595 __field( unsigned int, nr_sector
)
596 __field( unsigned int, rwbs
)
597 __array_text( char, comm
, TASK_COMM_LEN
)
601 tp_assign(dev
, bio
->bi_bdev
? bio
->bi_bdev
->bd_dev
: 0)
602 tp_assign(sector
, bio
->bi_sector
)
603 tp_assign(nr_sector
, bio
->bi_size
>> 9)
604 blk_fill_rwbs(rwbs
, bio
->bi_rw
, bio
->bi_size
)
605 tp_memcpy(comm
, current
->comm
, TASK_COMM_LEN
)
608 TP_printk("%d,%d %s %llu + %u [%s]",
609 MAJOR(__entry
->dev
), MINOR(__entry
->dev
),
610 __print_rwbs_flags(__entry
->rwbs
),
611 (unsigned long long)__entry
->sector
,
612 __entry
->nr_sector
, __entry
->comm
)
616 * block_bio_backmerge - merging block operation to the end of an existing operation
617 * @q: queue holding operation
618 * @bio: new block operation to merge
620 * Merging block request @bio to the end of an existing block request
623 DEFINE_EVENT(block_bio
, block_bio_backmerge
,
625 TP_PROTO(struct request_queue
*q
, struct bio
*bio
),
631 * block_bio_frontmerge - merging block operation to the beginning of an existing operation
632 * @q: queue holding operation
633 * @bio: new block operation to merge
635 * Merging block IO operation @bio to the beginning of an existing block
636 * operation in queue @q.
638 DEFINE_EVENT(block_bio
, block_bio_frontmerge
,
640 TP_PROTO(struct request_queue
*q
, struct bio
*bio
),
646 * block_bio_queue - putting new block IO operation in queue
647 * @q: queue holding operation
648 * @bio: new block operation
650 * About to place the block IO operation @bio into queue @q.
652 DEFINE_EVENT(block_bio
, block_bio_queue
,
654 TP_PROTO(struct request_queue
*q
, struct bio
*bio
),
660 DECLARE_EVENT_CLASS(block_get_rq
,
662 TP_PROTO(struct request_queue
*q
, struct bio
*bio
, int rw
),
667 __field( dev_t
, dev
)
668 __field( sector_t
, sector
)
669 __field( unsigned int, nr_sector
)
670 __field( unsigned int, rwbs
)
671 __array_text( char, comm
, TASK_COMM_LEN
)
675 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,14,0))
676 tp_assign(dev
, bio
? bio
->bi_bdev
->bd_dev
: 0)
677 tp_assign(sector
, bio
? bio
->bi_iter
.bi_sector
: 0)
678 tp_assign(nr_sector
, bio
? bio_sectors(bio
) : 0)
679 blk_fill_rwbs(rwbs
, bio
? bio
->bi_rw
: 0,
680 bio
? bio_sectors(bio
) : 0)
681 tp_memcpy(comm
, current
->comm
, TASK_COMM_LEN
)
682 #else /* #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,14,0)) */
683 tp_assign(dev
, bio
? bio
->bi_bdev
->bd_dev
: 0)
684 tp_assign(sector
, bio
? bio
->bi_sector
: 0)
685 tp_assign(nr_sector
, bio
? bio
->bi_size
>> 9 : 0)
686 blk_fill_rwbs(rwbs
, bio
? bio
->bi_rw
: 0,
687 bio
? bio
->bi_size
>> 9 : 0)
688 tp_memcpy(comm
, current
->comm
, TASK_COMM_LEN
)
689 #endif /* #else #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,14,0)) */
692 TP_printk("%d,%d %s %llu + %u [%s]",
693 MAJOR(__entry
->dev
), MINOR(__entry
->dev
),
694 __print_rwbs_flags(__entry
->rwbs
),
695 (unsigned long long)__entry
->sector
,
696 __entry
->nr_sector
, __entry
->comm
)
700 * block_getrq - get a free request entry in queue for block IO operations
701 * @q: queue for operations
702 * @bio: pending block IO operation
703 * @rw: low bit indicates a read (%0) or a write (%1)
705 * A request struct for queue @q has been allocated to handle the
706 * block IO operation @bio.
708 DEFINE_EVENT(block_get_rq
, block_getrq
,
710 TP_PROTO(struct request_queue
*q
, struct bio
*bio
, int rw
),
716 * block_sleeprq - waiting to get a free request entry in queue for block IO operation
717 * @q: queue for operation
718 * @bio: pending block IO operation
719 * @rw: low bit indicates a read (%0) or a write (%1)
721 * In the case where a request struct cannot be provided for queue @q
722 * the process needs to wait for an request struct to become
723 * available. This tracepoint event is generated each time the
724 * process goes to sleep waiting for request struct become available.
726 DEFINE_EVENT(block_get_rq
, block_sleeprq
,
728 TP_PROTO(struct request_queue
*q
, struct bio
*bio
, int rw
),
734 * block_plug - keep operations requests in request queue
735 * @q: request queue to plug
737 * Plug the request queue @q. Do not allow block operation requests
738 * to be sent to the device driver. Instead, accumulate requests in
739 * the queue to improve throughput performance of the block device.
741 TRACE_EVENT(block_plug
,
743 TP_PROTO(struct request_queue
*q
),
748 __array_text( char, comm
, TASK_COMM_LEN
)
752 tp_memcpy(comm
, current
->comm
, TASK_COMM_LEN
)
755 TP_printk("[%s]", __entry
->comm
)
758 DECLARE_EVENT_CLASS(block_unplug
,
760 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,39))
761 TP_PROTO(struct request_queue
*q
, unsigned int depth
, bool explicit),
763 TP_ARGS(q
, depth
, explicit),
765 TP_PROTO(struct request_queue
*q
),
771 __field( int, nr_rq
)
772 __array_text( char, comm
, TASK_COMM_LEN
)
776 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,39))
777 tp_assign(nr_rq
, depth
)
779 tp_assign(nr_rq
, q
->rq
.count
[READ
] + q
->rq
.count
[WRITE
])
781 tp_memcpy(comm
, current
->comm
, TASK_COMM_LEN
)
784 TP_printk("[%s] %d", __entry
->comm
, __entry
->nr_rq
)
787 #if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,39))
789 * block_unplug_timer - timed release of operations requests in queue to device driver
790 * @q: request queue to unplug
792 * Unplug the request queue @q because a timer expired and allow block
793 * operation requests to be sent to the device driver.
795 DEFINE_EVENT(block_unplug
, block_unplug_timer
,
797 TP_PROTO(struct request_queue
*q
),
804 * block_unplug - release of operations requests in request queue
805 * @q: request queue to unplug
806 * @depth: number of requests just added to the queue
807 * @explicit: whether this was an explicit unplug, or one from schedule()
809 * Unplug request queue @q because device driver is scheduled to work
810 * on elements in the request queue.
812 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,39))
813 DEFINE_EVENT(block_unplug
, block_unplug
,
815 DEFINE_EVENT(block_unplug
, block_unplug_io
,
818 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,39))
819 TP_PROTO(struct request_queue
*q
, unsigned int depth
, bool explicit),
821 TP_ARGS(q
, depth
, explicit)
823 TP_PROTO(struct request_queue
*q
),
830 * block_split - split a single bio struct into two bio structs
831 * @q: queue containing the bio
832 * @bio: block operation being split
833 * @new_sector: The starting sector for the new bio
835 * The bio request @bio in request queue @q needs to be split into two
836 * bio requests. The newly created @bio request starts at
837 * @new_sector. This split may be required due to hardware limitation
838 * such as operation crossing device boundaries in a RAID system.
840 TRACE_EVENT(block_split
,
842 TP_PROTO(struct request_queue
*q
, struct bio
*bio
,
843 unsigned int new_sector
),
845 TP_ARGS(q
, bio
, new_sector
),
848 __field( dev_t
, dev
)
849 __field( sector_t
, sector
)
850 __field( sector_t
, new_sector
)
851 __field( unsigned int, rwbs
)
852 __array_text( char, comm
, TASK_COMM_LEN
)
856 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,14,0))
857 tp_assign(dev
, bio
->bi_bdev
->bd_dev
)
858 tp_assign(sector
, bio
->bi_iter
.bi_sector
)
859 tp_assign(new_sector
, new_sector
)
860 blk_fill_rwbs(rwbs
, bio
->bi_rw
, bio
->bi_iter
.bi_size
)
861 tp_memcpy(comm
, current
->comm
, TASK_COMM_LEN
)
862 #else /* #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,14,0)) */
863 tp_assign(dev
, bio
->bi_bdev
->bd_dev
)
864 tp_assign(sector
, bio
->bi_sector
)
865 tp_assign(new_sector
, new_sector
)
866 blk_fill_rwbs(rwbs
, bio
->bi_rw
, bio
->bi_size
)
867 tp_memcpy(comm
, current
->comm
, TASK_COMM_LEN
)
868 #endif /* #else #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,14,0)) */
871 TP_printk("%d,%d %s %llu / %llu [%s]",
872 MAJOR(__entry
->dev
), MINOR(__entry
->dev
),
873 __print_rwbs_flags(__entry
->rwbs
),
874 (unsigned long long)__entry
->sector
,
875 (unsigned long long)__entry
->new_sector
,
880 * block_bio_remap - map request for a logical device to the raw device
881 * @q: queue holding the operation
882 * @bio: revised operation
883 * @dev: device for the operation
884 * @from: original sector for the operation
886 * An operation for a logical device has been mapped to the
889 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,38))
890 TRACE_EVENT(block_bio_remap
,
892 TRACE_EVENT(block_remap
,
895 TP_PROTO(struct request_queue
*q
, struct bio
*bio
, dev_t dev
,
898 TP_ARGS(q
, bio
, dev
, from
),
901 __field( dev_t
, dev
)
902 __field( sector_t
, sector
)
903 __field( unsigned int, nr_sector
)
904 __field( dev_t
, old_dev
)
905 __field( sector_t
, old_sector
)
906 __field( unsigned int, rwbs
)
910 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,14,0))
911 tp_assign(dev
, bio
->bi_bdev
->bd_dev
)
912 tp_assign(sector
, bio
->bi_iter
.bi_sector
)
913 tp_assign(nr_sector
, bio_sectors(bio
))
914 tp_assign(old_dev
, dev
)
915 tp_assign(old_sector
, from
)
916 blk_fill_rwbs(rwbs
, bio
->bi_rw
, bio
->bi_iter
.bi_size
)
917 #else /* #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,14,0)) */
918 tp_assign(dev
, bio
->bi_bdev
->bd_dev
)
919 tp_assign(sector
, bio
->bi_sector
)
920 tp_assign(nr_sector
, bio
->bi_size
>> 9)
921 tp_assign(old_dev
, dev
)
922 tp_assign(old_sector
, from
)
923 blk_fill_rwbs(rwbs
, bio
->bi_rw
, bio
->bi_size
)
924 #endif /* #else #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,14,0)) */
927 TP_printk("%d,%d %s %llu + %u <- (%d,%d) %llu",
928 MAJOR(__entry
->dev
), MINOR(__entry
->dev
),
929 __print_rwbs_flags(__entry
->rwbs
),
930 (unsigned long long)__entry
->sector
,
932 MAJOR(__entry
->old_dev
), MINOR(__entry
->old_dev
),
933 (unsigned long long)__entry
->old_sector
)
936 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,32))
938 * block_rq_remap - map request for a block operation request
939 * @q: queue holding the operation
940 * @rq: block IO operation request
941 * @dev: device for the operation
942 * @from: original sector for the operation
944 * The block operation request @rq in @q has been remapped. The block
945 * operation request @rq holds the current information and @from hold
946 * the original sector.
948 TRACE_EVENT(block_rq_remap
,
950 TP_PROTO(struct request_queue
*q
, struct request
*rq
, dev_t dev
,
953 TP_ARGS(q
, rq
, dev
, from
),
956 __field( dev_t
, dev
)
957 __field( sector_t
, sector
)
958 __field( unsigned int, nr_sector
)
959 __field( dev_t
, old_dev
)
960 __field( sector_t
, old_sector
)
961 __field( unsigned int, rwbs
)
965 tp_assign(dev
, disk_devt(rq
->rq_disk
))
966 tp_assign(sector
, blk_rq_pos(rq
))
967 tp_assign(nr_sector
, blk_rq_sectors(rq
))
968 tp_assign(old_dev
, dev
)
969 tp_assign(old_sector
, from
)
970 blk_fill_rwbs(rwbs
, rq
->cmd_flags
, blk_rq_bytes(rq
))
973 TP_printk("%d,%d %s %llu + %u <- (%d,%d) %llu",
974 MAJOR(__entry
->dev
), MINOR(__entry
->dev
),
975 __print_rwbs_flags(__entry
->rwbs
),
976 (unsigned long long)__entry
->sector
,
978 MAJOR(__entry
->old_dev
), MINOR(__entry
->old_dev
),
979 (unsigned long long)__entry
->old_sector
)
983 #undef __print_rwbs_flags
986 #endif /* _TRACE_BLOCK_H */
988 /* This part must be outside protection */
989 #include "../../../probes/define_trace.h"
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