2 #define TRACE_SYSTEM block
4 #if !defined(LTTNG_TRACE_BLOCK_H) || defined(TRACE_HEADER_MULTI_READ)
5 #define LTTNG_TRACE_BLOCK_H
7 #include <probes/lttng-tracepoint-event.h>
8 #include <linux/blktrace_api.h>
9 #include <linux/blkdev.h>
10 #include <linux/trace_seq.h>
11 #include <linux/version.h>
13 #ifndef _TRACE_BLOCK_DEF_
14 #define _TRACE_BLOCK_DEF_
17 RWBS_FLAG_WRITE
= (1 << 0),
18 RWBS_FLAG_DISCARD
= (1 << 1),
19 RWBS_FLAG_READ
= (1 << 2),
20 RWBS_FLAG_RAHEAD
= (1 << 3),
21 RWBS_FLAG_BARRIER
= (1 << 4),
22 RWBS_FLAG_SYNC
= (1 << 5),
23 RWBS_FLAG_META
= (1 << 6),
24 RWBS_FLAG_SECURE
= (1 << 7),
25 RWBS_FLAG_FLUSH
= (1 << 8),
26 RWBS_FLAG_FUA
= (1 << 9),
29 #endif /* _TRACE_BLOCK_DEF_ */
31 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,1,0))
33 #define blk_rwbs_ctf_integer(type, rwbs, rw, bytes) \
34 ctf_integer(type, rwbs, ((rw) & WRITE ? RWBS_FLAG_WRITE : \
35 ( (rw) & REQ_DISCARD ? RWBS_FLAG_DISCARD : \
36 ( (bytes) ? RWBS_FLAG_READ : \
38 | ((rw) & REQ_RAHEAD ? RWBS_FLAG_RAHEAD : 0) \
39 | ((rw) & REQ_SYNC ? RWBS_FLAG_SYNC : 0) \
40 | ((rw) & REQ_META ? RWBS_FLAG_META : 0) \
41 | ((rw) & REQ_SECURE ? RWBS_FLAG_SECURE : 0) \
42 | ((rw) & REQ_FLUSH ? RWBS_FLAG_FLUSH : 0) \
43 | ((rw) & REQ_FUA ? RWBS_FLAG_FUA : 0))
45 #elif (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,37))
47 #define blk_rwbs_ctf_integer(type, rwbs, rw, bytes) \
48 ctf_integer(type, rwbs, ((rw) & WRITE ? RWBS_FLAG_WRITE : \
49 ( (rw) & REQ_DISCARD ? RWBS_FLAG_DISCARD : \
50 ( (bytes) ? RWBS_FLAG_READ : \
52 | ((rw) & REQ_RAHEAD ? RWBS_FLAG_RAHEAD : 0) \
53 | ((rw) & REQ_SYNC ? RWBS_FLAG_SYNC : 0) \
54 | ((rw) & REQ_META ? RWBS_FLAG_META : 0) \
55 | ((rw) & REQ_SECURE ? RWBS_FLAG_SECURE : 0))
57 #elif (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,36))
59 #define blk_rwbs_ctf_integer(type, rwbs, rw, bytes) \
60 ctf_integer(type, rwbs, ((rw) & WRITE ? RWBS_FLAG_WRITE : \
61 ( (rw) & REQ_DISCARD ? RWBS_FLAG_DISCARD : \
62 ( (bytes) ? RWBS_FLAG_READ : \
64 | ((rw) & REQ_RAHEAD ? RWBS_FLAG_RAHEAD : 0) \
65 | ((rw) & REQ_HARDBARRIER ? RWBS_FLAG_BARRIER : 0) \
66 | ((rw) & REQ_SYNC ? RWBS_FLAG_SYNC : 0) \
67 | ((rw) & REQ_META ? RWBS_FLAG_META : 0) \
68 | ((rw) & REQ_SECURE ? RWBS_FLAG_SECURE : 0))
72 #define blk_rwbs_ctf_integer(type, rwbs, rw, bytes) \
73 ctf_integer(type, rwbs, ((rw) & WRITE ? RWBS_FLAG_WRITE : \
74 ( (rw) & (1 << BIO_RW_DISCARD) ? RWBS_FLAG_DISCARD : \
75 ( (bytes) ? RWBS_FLAG_READ : \
77 | ((rw) & (1 << BIO_RW_AHEAD) ? RWBS_FLAG_RAHEAD : 0) \
78 | ((rw) & (1 << BIO_RW_SYNCIO) ? RWBS_FLAG_SYNC : 0) \
79 | ((rw) & (1 << BIO_RW_META) ? RWBS_FLAG_META : 0) \
80 | ((rw) & (1 << BIO_RW_BARRIER) ? RWBS_FLAG_BARRIER : 0))
84 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,9,0))
85 LTTNG_TRACEPOINT_EVENT_CLASS(block_buffer
,
87 TP_PROTO(struct buffer_head
*bh
),
92 ctf_integer(dev_t
, dev
, bh
->b_bdev
->bd_dev
)
93 ctf_integer(sector_t
, sector
, bh
->b_blocknr
)
94 ctf_integer(size_t, size
, bh
->b_size
)
99 * block_touch_buffer - mark a buffer accessed
100 * @bh: buffer_head being touched
102 * Called from touch_buffer().
104 LTTNG_TRACEPOINT_EVENT_INSTANCE(block_buffer
, block_touch_buffer
,
106 TP_PROTO(struct buffer_head
*bh
),
112 * block_dirty_buffer - mark a buffer dirty
113 * @bh: buffer_head being dirtied
115 * Called from mark_buffer_dirty().
117 LTTNG_TRACEPOINT_EVENT_INSTANCE(block_buffer
, block_dirty_buffer
,
119 TP_PROTO(struct buffer_head
*bh
),
125 LTTNG_TRACEPOINT_EVENT_CLASS_CODE(block_rq_with_error
,
127 TP_PROTO(struct request_queue
*q
, struct request
*rq
),
133 unsigned int nr_sector
;
139 if (rq
->cmd_type
== REQ_TYPE_BLOCK_PC
) {
140 tp_locvar
->sector
= 0;
141 tp_locvar
->nr_sector
= 0;
142 tp_locvar
->cmd
= rq
->cmd
;
143 tp_locvar
->cmd_len
= rq
->cmd_len
;
145 tp_locvar
->sector
= blk_rq_pos(rq
);
146 tp_locvar
->nr_sector
= blk_rq_sectors(rq
);
147 tp_locvar
->cmd
= NULL
;
148 tp_locvar
->cmd_len
= 0;
153 ctf_integer(dev_t
, dev
,
154 rq
->rq_disk
? disk_devt(rq
->rq_disk
) : 0)
155 ctf_integer(sector_t
, sector
, tp_locvar
->sector
)
156 ctf_integer(unsigned int, nr_sector
, tp_locvar
->nr_sector
)
157 ctf_integer(int, errors
, rq
->errors
)
158 blk_rwbs_ctf_integer(unsigned int, rwbs
,
159 rq
->cmd_flags
, blk_rq_bytes(rq
))
160 ctf_sequence_hex(unsigned char, cmd
,
161 tp_locvar
->cmd
, size_t, tp_locvar
->cmd_len
)
168 * block_rq_abort - abort block operation request
169 * @q: queue containing the block operation request
170 * @rq: block IO operation request
172 * Called immediately after pending block IO operation request @rq in
173 * queue @q is aborted. The fields in the operation request @rq
174 * can be examined to determine which device and sectors the pending
175 * operation would access.
177 LTTNG_TRACEPOINT_EVENT_INSTANCE(block_rq_with_error
, block_rq_abort
,
179 TP_PROTO(struct request_queue
*q
, struct request
*rq
),
185 * block_rq_requeue - place block IO request back on a queue
186 * @q: queue holding operation
187 * @rq: block IO operation request
189 * The block operation request @rq is being placed back into queue
190 * @q. For some reason the request was not completed and needs to be
191 * put back in the queue.
193 LTTNG_TRACEPOINT_EVENT_INSTANCE(block_rq_with_error
, block_rq_requeue
,
195 TP_PROTO(struct request_queue
*q
, struct request
*rq
),
200 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,14,5) \
201 || LTTNG_KERNEL_RANGE(3,12,21, 3,13,0) \
202 || LTTNG_KERNEL_RANGE(3,10,41, 3,11,0) \
203 || LTTNG_KERNEL_RANGE(3,4,91, 3,5,0) \
204 || LTTNG_KERNEL_RANGE(3,2,58, 3,3,0) \
205 || LTTNG_UBUNTU_KERNEL_RANGE(3,13,11,28, 3,14,0,0) \
206 || LTTNG_RHEL_KERNEL_RANGE(3,10,0,229,0,0, 3,11,0,0,0,0))
209 * block_rq_complete - block IO operation completed by device driver
210 * @q: queue containing the block operation request
211 * @rq: block operations request
212 * @nr_bytes: number of completed bytes
214 * The block_rq_complete tracepoint event indicates that some portion
215 * of operation request has been completed by the device driver. If
216 * the @rq->bio is %NULL, then there is absolutely no additional work to
217 * do for the request. If @rq->bio is non-NULL then there is
218 * additional work required to complete the request.
220 LTTNG_TRACEPOINT_EVENT_CODE(block_rq_complete
,
222 TP_PROTO(struct request_queue
*q
, struct request
*rq
,
223 unsigned int nr_bytes
),
225 TP_ARGS(q
, rq
, nr_bytes
),
233 if (rq
->cmd_type
== REQ_TYPE_BLOCK_PC
) {
234 tp_locvar
->cmd
= rq
->cmd
;
235 tp_locvar
->cmd_len
= rq
->cmd_len
;
237 tp_locvar
->cmd
= NULL
;
238 tp_locvar
->cmd_len
= 0;
243 ctf_integer(dev_t
, dev
,
244 rq
->rq_disk
? disk_devt(rq
->rq_disk
) : 0)
245 ctf_integer(sector_t
, sector
, blk_rq_pos(rq
))
246 ctf_integer(unsigned int, nr_sector
, nr_bytes
>> 9)
247 ctf_integer(int, errors
, rq
->errors
)
248 blk_rwbs_ctf_integer(unsigned int, rwbs
,
249 rq
->cmd_flags
, nr_bytes
)
250 ctf_sequence_hex(unsigned char, cmd
,
251 tp_locvar
->cmd
, size_t, tp_locvar
->cmd_len
)
257 #else /* #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,15,0)) */
260 * block_rq_complete - block IO operation completed by device driver
261 * @q: queue containing the block operation request
262 * @rq: block operations request
264 * The block_rq_complete tracepoint event indicates that some portion
265 * of operation request has been completed by the device driver. If
266 * the @rq->bio is %NULL, then there is absolutely no additional work to
267 * do for the request. If @rq->bio is non-NULL then there is
268 * additional work required to complete the request.
270 LTTNG_TRACEPOINT_EVENT_INSTANCE(block_rq_with_error
, block_rq_complete
,
272 TP_PROTO(struct request_queue
*q
, struct request
*rq
),
277 #endif /* #else #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,15,0)) */
279 LTTNG_TRACEPOINT_EVENT_CLASS_CODE(block_rq
,
281 TP_PROTO(struct request_queue
*q
, struct request
*rq
),
287 unsigned int nr_sector
;
294 if (rq
->cmd_type
== REQ_TYPE_BLOCK_PC
) {
295 tp_locvar
->sector
= 0;
296 tp_locvar
->nr_sector
= 0;
297 tp_locvar
->bytes
= blk_rq_bytes(rq
);
298 tp_locvar
->cmd
= rq
->cmd
;
299 tp_locvar
->cmd_len
= rq
->cmd_len
;
301 tp_locvar
->sector
= blk_rq_pos(rq
);
302 tp_locvar
->nr_sector
= blk_rq_sectors(rq
);
303 tp_locvar
->bytes
= 0;
304 tp_locvar
->cmd
= NULL
;
305 tp_locvar
->cmd_len
= 0;
310 ctf_integer(dev_t
, dev
,
311 rq
->rq_disk
? disk_devt(rq
->rq_disk
) : 0)
312 ctf_integer(sector_t
, sector
, tp_locvar
->sector
)
313 ctf_integer(unsigned int, nr_sector
, tp_locvar
->nr_sector
)
314 ctf_integer(unsigned int, bytes
, tp_locvar
->bytes
)
315 ctf_integer(pid_t
, tid
, current
->pid
)
316 blk_rwbs_ctf_integer(unsigned int, rwbs
,
317 rq
->cmd_flags
, blk_rq_bytes(rq
))
318 ctf_sequence_hex(unsigned char, cmd
,
319 tp_locvar
->cmd
, size_t, tp_locvar
->cmd_len
)
320 ctf_array_text(char, comm
, current
->comm
, TASK_COMM_LEN
)
327 * block_rq_insert - insert block operation request into queue
329 * @rq: block IO operation request
331 * Called immediately before block operation request @rq is inserted
332 * into queue @q. The fields in the operation request @rq struct can
333 * be examined to determine which device and sectors the pending
334 * operation would access.
336 LTTNG_TRACEPOINT_EVENT_INSTANCE(block_rq
, block_rq_insert
,
338 TP_PROTO(struct request_queue
*q
, struct request
*rq
),
344 * block_rq_issue - issue pending block IO request operation to device driver
345 * @q: queue holding operation
346 * @rq: block IO operation operation request
348 * Called when block operation request @rq from queue @q is sent to a
349 * device driver for processing.
351 LTTNG_TRACEPOINT_EVENT_INSTANCE(block_rq
, block_rq_issue
,
353 TP_PROTO(struct request_queue
*q
, struct request
*rq
),
359 * block_bio_bounce - used bounce buffer when processing block operation
360 * @q: queue holding the block operation
361 * @bio: block operation
363 * A bounce buffer was used to handle the block operation @bio in @q.
364 * This occurs when hardware limitations prevent a direct transfer of
365 * data between the @bio data memory area and the IO device. Use of a
366 * bounce buffer requires extra copying of data and decreases
369 LTTNG_TRACEPOINT_EVENT(block_bio_bounce
,
371 TP_PROTO(struct request_queue
*q
, struct bio
*bio
),
376 ctf_integer(dev_t
, dev
, bio
->bi_bdev
? bio
->bi_bdev
->bd_dev
: 0)
377 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,14,0))
378 ctf_integer(sector_t
, sector
, bio
->bi_iter
.bi_sector
)
379 ctf_integer(unsigned int, nr_sector
, bio_sectors(bio
))
380 blk_rwbs_ctf_integer(unsigned int, rwbs
,
381 bio
->bi_rw
, bio
->bi_iter
.bi_size
)
382 #else /* #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,14,0)) */
383 ctf_integer(sector_t
, sector
, bio
->bi_sector
)
384 ctf_integer(unsigned int, nr_sector
, bio
->bi_size
>> 9)
385 blk_rwbs_ctf_integer(unsigned int, rwbs
,
386 bio
->bi_rw
, bio
->bi_size
)
387 #endif /* #else #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,14,0)) */
388 ctf_integer(pid_t
, tid
, current
->pid
)
389 ctf_array_text(char, comm
, current
->comm
, TASK_COMM_LEN
)
394 * block_bio_complete - completed all work on the block operation
395 * @q: queue holding the block operation
396 * @bio: block operation completed
397 * @error: io error value
399 * This tracepoint indicates there is no further work to do on this
400 * block IO operation @bio.
402 LTTNG_TRACEPOINT_EVENT(block_bio_complete
,
404 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,38))
405 TP_PROTO(struct request_queue
*q
, struct bio
*bio
, int error
),
407 TP_ARGS(q
, bio
, error
),
409 TP_PROTO(struct request_queue
*q
, struct bio
*bio
),
415 ctf_integer(dev_t
, dev
, bio
->bi_bdev
->bd_dev
)
416 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,14,0))
417 ctf_integer(sector_t
, sector
, bio
->bi_iter
.bi_sector
)
418 ctf_integer(unsigned int, nr_sector
, bio_sectors(bio
))
419 ctf_integer(int, error
, error
)
420 blk_rwbs_ctf_integer(unsigned int, rwbs
,
421 bio
->bi_rw
, bio
->bi_iter
.bi_size
)
422 #else /* #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,14,0)) */
423 ctf_integer(sector_t
, sector
, bio
->bi_sector
)
424 ctf_integer(unsigned int, nr_sector
, bio
->bi_size
>> 9)
425 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,38))
426 ctf_integer(int, error
, error
)
428 ctf_integer(int, error
, 0)
430 blk_rwbs_ctf_integer(unsigned int, rwbs
,
431 bio
->bi_rw
, bio
->bi_size
)
432 #endif /* #else #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,14,0)) */
436 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,9,0))
437 LTTNG_TRACEPOINT_EVENT_CLASS(block_bio_merge
,
439 TP_PROTO(struct request_queue
*q
, struct request
*rq
, struct bio
*bio
),
444 ctf_integer(dev_t
, dev
, bio
->bi_bdev
->bd_dev
)
445 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,14,0))
446 ctf_integer(sector_t
, sector
, bio
->bi_iter
.bi_sector
)
447 ctf_integer(unsigned int, nr_sector
, bio_sectors(bio
))
448 blk_rwbs_ctf_integer(unsigned int, rwbs
,
449 bio
->bi_rw
, bio
->bi_iter
.bi_size
)
450 #else /* #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,14,0)) */
451 ctf_integer(sector_t
, sector
, bio
->bi_sector
)
452 ctf_integer(unsigned int, nr_sector
, bio
->bi_size
>> 9)
453 blk_rwbs_ctf_integer(unsigned int, rwbs
,
454 bio
->bi_rw
, bio
->bi_size
)
455 #endif /* #else #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,14,0)) */
456 ctf_integer(pid_t
, tid
, current
->pid
)
457 ctf_array_text(char, comm
, current
->comm
, TASK_COMM_LEN
)
462 * block_bio_backmerge - merging block operation to the end of an existing operation
463 * @q: queue holding operation
464 * @bio: new block operation to merge
466 * Merging block request @bio to the end of an existing block request
469 LTTNG_TRACEPOINT_EVENT_INSTANCE(block_bio_merge
, block_bio_backmerge
,
471 TP_PROTO(struct request_queue
*q
, struct request
*rq
, struct bio
*bio
),
477 * block_bio_frontmerge - merging block operation to the beginning of an existing operation
478 * @q: queue holding operation
479 * @bio: new block operation to merge
481 * Merging block IO operation @bio to the beginning of an existing block
482 * operation in queue @q.
484 LTTNG_TRACEPOINT_EVENT_INSTANCE(block_bio_merge
, block_bio_frontmerge
,
486 TP_PROTO(struct request_queue
*q
, struct request
*rq
, struct bio
*bio
),
492 * block_bio_queue - putting new block IO operation in queue
493 * @q: queue holding operation
494 * @bio: new block operation
496 * About to place the block IO operation @bio into queue @q.
498 LTTNG_TRACEPOINT_EVENT(block_bio_queue
,
500 TP_PROTO(struct request_queue
*q
, struct bio
*bio
),
505 ctf_integer(dev_t
, dev
, bio
->bi_bdev
->bd_dev
)
506 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,14,0))
507 ctf_integer(sector_t
, sector
, bio
->bi_iter
.bi_sector
)
508 ctf_integer(unsigned int, nr_sector
, bio_sectors(bio
))
509 blk_rwbs_ctf_integer(unsigned int, rwbs
,
510 bio
->bi_rw
, bio
->bi_iter
.bi_size
)
511 #else /* #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,14,0)) */
512 ctf_integer(sector_t
, sector
, bio
->bi_sector
)
513 ctf_integer(unsigned int, nr_sector
, bio
->bi_size
>> 9)
514 blk_rwbs_ctf_integer(unsigned int, rwbs
,
515 bio
->bi_rw
, bio
->bi_size
)
516 #endif /* #else #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,14,0)) */
517 ctf_integer(pid_t
, tid
, current
->pid
)
518 ctf_array_text(char, comm
, current
->comm
, TASK_COMM_LEN
)
521 #else /* if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,9,0)) */
522 LTTNG_TRACEPOINT_EVENT_CLASS(block_bio
,
524 TP_PROTO(struct request_queue
*q
, struct bio
*bio
),
529 ctf_integer(dev_t
, dev
, bio
->bi_bdev
? bio
->bi_bdev
->bd_dev
: 0)
530 ctf_integer(sector_t
, sector
, bio
->bi_sector
)
531 ctf_integer(unsigned int, nr_sector
, bio
->bi_size
>> 9)
532 blk_rwbs_ctf_integer(unsigned int, rwbs
,
533 bio
->bi_rw
, bio
->bi_size
)
534 ctf_integer(pid_t
, tid
, current
->pid
)
535 ctf_array_text(char, comm
, current
->comm
, TASK_COMM_LEN
)
540 * block_bio_backmerge - merging block operation to the end of an existing operation
541 * @q: queue holding operation
542 * @bio: new block operation to merge
544 * Merging block request @bio to the end of an existing block request
547 LTTNG_TRACEPOINT_EVENT_INSTANCE(block_bio
, block_bio_backmerge
,
549 TP_PROTO(struct request_queue
*q
, struct bio
*bio
),
555 * block_bio_frontmerge - merging block operation to the beginning of an existing operation
556 * @q: queue holding operation
557 * @bio: new block operation to merge
559 * Merging block IO operation @bio to the beginning of an existing block
560 * operation in queue @q.
562 LTTNG_TRACEPOINT_EVENT_INSTANCE(block_bio
, block_bio_frontmerge
,
564 TP_PROTO(struct request_queue
*q
, struct bio
*bio
),
570 * block_bio_queue - putting new block IO operation in queue
571 * @q: queue holding operation
572 * @bio: new block operation
574 * About to place the block IO operation @bio into queue @q.
576 LTTNG_TRACEPOINT_EVENT_INSTANCE(block_bio
, block_bio_queue
,
578 TP_PROTO(struct request_queue
*q
, struct bio
*bio
),
582 #endif /* #else #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,9,0)) */
584 LTTNG_TRACEPOINT_EVENT_CLASS(block_get_rq
,
586 TP_PROTO(struct request_queue
*q
, struct bio
*bio
, int rw
),
591 ctf_integer(dev_t
, dev
, bio
? bio
->bi_bdev
->bd_dev
: 0)
592 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,14,0))
593 ctf_integer(sector_t
, sector
, bio
? bio
->bi_iter
.bi_sector
: 0)
594 ctf_integer(unsigned int, nr_sector
,
595 bio
? bio_sectors(bio
) : 0)
596 blk_rwbs_ctf_integer(unsigned int, rwbs
,
597 bio
? bio
->bi_rw
: 0,
598 bio
? bio
->bi_iter
.bi_size
: 0)
599 #else /* #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,14,0)) */
600 ctf_integer(sector_t
, sector
, bio
? bio
->bi_sector
: 0)
601 ctf_integer(unsigned int, nr_sector
,
602 bio
? bio
->bi_size
>> 9 : 0)
603 blk_rwbs_ctf_integer(unsigned int, rwbs
,
604 bio
? bio
->bi_rw
: 0,
605 bio
? bio
->bi_size
: 0)
606 #endif /* #else #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,14,0)) */
607 ctf_integer(pid_t
, tid
, current
->pid
)
608 ctf_array_text(char, comm
, current
->comm
, TASK_COMM_LEN
)
613 * block_getrq - get a free request entry in queue for block IO operations
614 * @q: queue for operations
615 * @bio: pending block IO operation
616 * @rw: low bit indicates a read (%0) or a write (%1)
618 * A request struct for queue @q has been allocated to handle the
619 * block IO operation @bio.
621 LTTNG_TRACEPOINT_EVENT_INSTANCE(block_get_rq
, block_getrq
,
623 TP_PROTO(struct request_queue
*q
, struct bio
*bio
, int rw
),
629 * block_sleeprq - waiting to get a free request entry in queue for block IO operation
630 * @q: queue for operation
631 * @bio: pending block IO operation
632 * @rw: low bit indicates a read (%0) or a write (%1)
634 * In the case where a request struct cannot be provided for queue @q
635 * the process needs to wait for an request struct to become
636 * available. This tracepoint event is generated each time the
637 * process goes to sleep waiting for request struct become available.
639 LTTNG_TRACEPOINT_EVENT_INSTANCE(block_get_rq
, block_sleeprq
,
641 TP_PROTO(struct request_queue
*q
, struct bio
*bio
, int rw
),
647 * block_plug - keep operations requests in request queue
648 * @q: request queue to plug
650 * Plug the request queue @q. Do not allow block operation requests
651 * to be sent to the device driver. Instead, accumulate requests in
652 * the queue to improve throughput performance of the block device.
654 LTTNG_TRACEPOINT_EVENT(block_plug
,
656 TP_PROTO(struct request_queue
*q
),
661 ctf_integer(pid_t
, tid
, current
->pid
)
662 ctf_array_text(char, comm
, current
->comm
, TASK_COMM_LEN
)
666 LTTNG_TRACEPOINT_EVENT_CLASS(block_unplug
,
668 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,39))
669 TP_PROTO(struct request_queue
*q
, unsigned int depth
, bool explicit),
671 TP_ARGS(q
, depth
, explicit),
673 TP_PROTO(struct request_queue
*q
),
679 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,39))
680 ctf_integer(int, nr_rq
, depth
)
682 ctf_integer(int, nr_rq
, q
->rq
.count
[READ
] + q
->rq
.count
[WRITE
])
684 ctf_integer(pid_t
, tid
, current
->pid
)
685 ctf_array_text(char, comm
, current
->comm
, TASK_COMM_LEN
)
689 #if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,39))
691 * block_unplug_timer - timed release of operations requests in queue to device driver
692 * @q: request queue to unplug
694 * Unplug the request queue @q because a timer expired and allow block
695 * operation requests to be sent to the device driver.
697 LTTNG_TRACEPOINT_EVENT_INSTANCE(block_unplug
, block_unplug_timer
,
699 TP_PROTO(struct request_queue
*q
),
706 * block_unplug - release of operations requests in request queue
707 * @q: request queue to unplug
708 * @depth: number of requests just added to the queue
709 * @explicit: whether this was an explicit unplug, or one from schedule()
711 * Unplug request queue @q because device driver is scheduled to work
712 * on elements in the request queue.
714 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,39))
715 LTTNG_TRACEPOINT_EVENT_INSTANCE(block_unplug
, block_unplug
,
717 LTTNG_TRACEPOINT_EVENT_INSTANCE(block_unplug
, block_unplug_io
,
720 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,39))
721 TP_PROTO(struct request_queue
*q
, unsigned int depth
, bool explicit),
723 TP_ARGS(q
, depth
, explicit)
725 TP_PROTO(struct request_queue
*q
),
732 * block_split - split a single bio struct into two bio structs
733 * @q: queue containing the bio
734 * @bio: block operation being split
735 * @new_sector: The starting sector for the new bio
737 * The bio request @bio in request queue @q needs to be split into two
738 * bio requests. The newly created @bio request starts at
739 * @new_sector. This split may be required due to hardware limitation
740 * such as operation crossing device boundaries in a RAID system.
742 LTTNG_TRACEPOINT_EVENT(block_split
,
744 TP_PROTO(struct request_queue
*q
, struct bio
*bio
,
745 unsigned int new_sector
),
747 TP_ARGS(q
, bio
, new_sector
),
750 ctf_integer(dev_t
, dev
, bio
->bi_bdev
->bd_dev
)
751 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,14,0))
752 ctf_integer(sector_t
, sector
, bio
->bi_iter
.bi_sector
)
753 blk_rwbs_ctf_integer(unsigned int, rwbs
,
754 bio
->bi_rw
, bio
->bi_iter
.bi_size
)
755 #else /* #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,14,0)) */
756 ctf_integer(sector_t
, sector
, bio
->bi_sector
)
757 blk_rwbs_ctf_integer(unsigned int, rwbs
,
758 bio
->bi_rw
, bio
->bi_size
)
759 #endif /* #else #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,14,0)) */
760 ctf_integer(sector_t
, new_sector
, new_sector
)
761 ctf_integer(pid_t
, tid
, current
->pid
)
762 ctf_array_text(char, comm
, current
->comm
, TASK_COMM_LEN
)
767 * block_bio_remap - map request for a logical device to the raw device
768 * @q: queue holding the operation
769 * @bio: revised operation
770 * @dev: device for the operation
771 * @from: original sector for the operation
773 * An operation for a logical device has been mapped to the
776 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,38))
777 LTTNG_TRACEPOINT_EVENT(block_bio_remap
,
779 LTTNG_TRACEPOINT_EVENT(block_remap
,
782 TP_PROTO(struct request_queue
*q
, struct bio
*bio
, dev_t dev
,
785 TP_ARGS(q
, bio
, dev
, from
),
788 ctf_integer(dev_t
, dev
, bio
->bi_bdev
->bd_dev
)
789 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,14,0))
790 ctf_integer(sector_t
, sector
, bio
->bi_iter
.bi_sector
)
791 ctf_integer(unsigned int, nr_sector
, bio_sectors(bio
))
792 blk_rwbs_ctf_integer(unsigned int, rwbs
,
793 bio
->bi_rw
, bio
->bi_iter
.bi_size
)
794 #else /* #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,14,0)) */
795 ctf_integer(sector_t
, sector
, bio
->bi_sector
)
796 ctf_integer(unsigned int, nr_sector
, bio
->bi_size
>> 9)
797 blk_rwbs_ctf_integer(unsigned int, rwbs
,
798 bio
->bi_rw
, bio
->bi_size
)
799 #endif /* #else #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,14,0)) */
800 ctf_integer(dev_t
, old_dev
, dev
)
801 ctf_integer(sector_t
, old_sector
, from
)
805 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,32))
807 * block_rq_remap - map request for a block operation request
808 * @q: queue holding the operation
809 * @rq: block IO operation request
810 * @dev: device for the operation
811 * @from: original sector for the operation
813 * The block operation request @rq in @q has been remapped. The block
814 * operation request @rq holds the current information and @from hold
815 * the original sector.
817 LTTNG_TRACEPOINT_EVENT(block_rq_remap
,
819 TP_PROTO(struct request_queue
*q
, struct request
*rq
, dev_t dev
,
822 TP_ARGS(q
, rq
, dev
, from
),
825 ctf_integer(dev_t
, dev
, disk_devt(rq
->rq_disk
))
826 ctf_integer(sector_t
, sector
, blk_rq_pos(rq
))
827 ctf_integer(unsigned int, nr_sector
, blk_rq_sectors(rq
))
828 ctf_integer(dev_t
, old_dev
, dev
)
829 ctf_integer(sector_t
, old_sector
, from
)
830 blk_rwbs_ctf_integer(unsigned int, rwbs
,
831 rq
->cmd_flags
, blk_rq_bytes(rq
))
836 #undef __print_rwbs_flags
839 #endif /* LTTNG_TRACE_BLOCK_H */
841 /* This part must be outside protection */
842 #include <probes/define_trace.h>
This page took 0.047316 seconds and 4 git commands to generate.