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Fix: block instrumentation: < 3.14 don't have bi_iter
[lttng-modules.git] / instrumentation / events / lttng-module / 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 #include <linux/trace_seq.h>
11 #include <linux/version.h>
12
13 #define RWBS_LEN 8
14
15 #ifndef _TRACE_BLOCK_DEF_
16 #define _TRACE_BLOCK_DEF_
17
18 #define __blk_dump_cmd(cmd, len) "<unknown>"
19
20 enum {
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),
31 };
32
33 #endif /* _TRACE_BLOCK_DEF_ */
34
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" })
47
48 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,1,0))
49
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 : \
54 ( 0 )))) \
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))
61
62 #elif (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,37))
63
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 : \
68 ( 0 )))) \
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))
73
74 #elif (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,36))
75
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 : \
80 ( 0 )))) \
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))
86
87 #else
88
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 : \
93 ( 0 )))) \
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))
98
99 #endif
100
101 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,9,0))
102 DECLARE_EVENT_CLASS(block_buffer,
103
104 TP_PROTO(struct buffer_head *bh),
105
106 TP_ARGS(bh),
107
108 TP_STRUCT__entry (
109 __field( dev_t, dev )
110 __field( sector_t, sector )
111 __field( size_t, size )
112 ),
113
114 TP_fast_assign(
115 tp_assign(dev, bh->b_bdev->bd_dev)
116 tp_assign(sector, bh->b_blocknr)
117 tp_assign(size, bh->b_size)
118 ),
119
120 TP_printk("%d,%d sector=%llu size=%zu",
121 MAJOR(__entry->dev), MINOR(__entry->dev),
122 (unsigned long long)__entry->sector, __entry->size
123 )
124 )
125
126 /**
127 * block_touch_buffer - mark a buffer accessed
128 * @bh: buffer_head being touched
129 *
130 * Called from touch_buffer().
131 */
132 DEFINE_EVENT(block_buffer, block_touch_buffer,
133
134 TP_PROTO(struct buffer_head *bh),
135
136 TP_ARGS(bh)
137 )
138
139 /**
140 * block_dirty_buffer - mark a buffer dirty
141 * @bh: buffer_head being dirtied
142 *
143 * Called from mark_buffer_dirty().
144 */
145 DEFINE_EVENT(block_buffer, block_dirty_buffer,
146
147 TP_PROTO(struct buffer_head *bh),
148
149 TP_ARGS(bh)
150 )
151 #endif
152
153 DECLARE_EVENT_CLASS(block_rq_with_error,
154
155 TP_PROTO(struct request_queue *q, struct request *rq),
156
157 TP_ARGS(q, rq),
158
159 TP_STRUCT__entry(
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) ?
167 rq->cmd_len : 0)
168 ),
169
170 TP_fast_assign(
171 tp_assign(dev, rq->rq_disk ? disk_devt(rq->rq_disk) : 0)
172 tp_assign(sector, (rq->cmd_type == REQ_TYPE_BLOCK_PC) ?
173 0 : blk_rq_pos(rq))
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) ?
179 rq->cmd : NULL)
180 ),
181
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)
189 )
190
191 /**
192 * block_rq_abort - abort block operation request
193 * @q: queue containing the block operation request
194 * @rq: block IO operation request
195 *
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.
200 */
201 DEFINE_EVENT(block_rq_with_error, block_rq_abort,
202
203 TP_PROTO(struct request_queue *q, struct request *rq),
204
205 TP_ARGS(q, rq)
206 )
207
208 /**
209 * block_rq_requeue - place block IO request back on a queue
210 * @q: queue holding operation
211 * @rq: block IO operation request
212 *
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.
216 */
217 DEFINE_EVENT(block_rq_with_error, block_rq_requeue,
218
219 TP_PROTO(struct request_queue *q, struct request *rq),
220
221 TP_ARGS(q, rq)
222 )
223
224 /**
225 * block_rq_complete - block IO operation completed by device driver
226 * @q: queue containing the block operation request
227 * @rq: block operations request
228 *
229 * The block_rq_complete tracepoint event indicates that some portion
230 * of operation request has been completed by the device driver. If
231 * the @rq->bio is %NULL, then there is absolutely no additional work to
232 * do for the request. If @rq->bio is non-NULL then there is
233 * additional work required to complete the request.
234 */
235 DEFINE_EVENT(block_rq_with_error, block_rq_complete,
236
237 TP_PROTO(struct request_queue *q, struct request *rq),
238
239 TP_ARGS(q, rq)
240 )
241
242 DECLARE_EVENT_CLASS(block_rq,
243
244 TP_PROTO(struct request_queue *q, struct request *rq),
245
246 TP_ARGS(q, rq),
247
248 TP_STRUCT__entry(
249 __field( dev_t, dev )
250 __field( sector_t, sector )
251 __field( unsigned int, nr_sector )
252 __field( unsigned int, bytes )
253 __field( unsigned int, rwbs )
254 __array_text( char, comm, TASK_COMM_LEN )
255 __dynamic_array_hex( unsigned char, cmd,
256 (rq->cmd_type == REQ_TYPE_BLOCK_PC) ?
257 rq->cmd_len : 0)
258 ),
259
260 TP_fast_assign(
261 tp_assign(dev, rq->rq_disk ? disk_devt(rq->rq_disk) : 0)
262 tp_assign(sector, (rq->cmd_type == REQ_TYPE_BLOCK_PC) ?
263 0 : blk_rq_pos(rq))
264 tp_assign(nr_sector, (rq->cmd_type == REQ_TYPE_BLOCK_PC) ?
265 0 : blk_rq_sectors(rq))
266 tp_assign(bytes, (rq->cmd_type == REQ_TYPE_BLOCK_PC) ?
267 blk_rq_bytes(rq) : 0)
268 blk_fill_rwbs(rwbs, rq->cmd_flags, blk_rq_bytes(rq))
269 tp_memcpy_dyn(cmd, (rq->cmd_type == REQ_TYPE_BLOCK_PC) ?
270 rq->cmd : NULL)
271 tp_memcpy(comm, current->comm, TASK_COMM_LEN)
272 ),
273
274 TP_printk("%d,%d %s %u (%s) %llu + %u [%s]",
275 MAJOR(__entry->dev), MINOR(__entry->dev),
276 __print_rwbs_flags(__entry->rwbs),
277 __entry->bytes,
278 __blk_dump_cmd(__get_dynamic_array(cmd),
279 __get_dynamic_array_len(cmd)),
280 (unsigned long long)__entry->sector,
281 __entry->nr_sector, __entry->comm)
282 )
283
284 /**
285 * block_rq_insert - insert block operation request into queue
286 * @q: target queue
287 * @rq: block IO operation request
288 *
289 * Called immediately before block operation request @rq is inserted
290 * into queue @q. The fields in the operation request @rq struct can
291 * be examined to determine which device and sectors the pending
292 * operation would access.
293 */
294 DEFINE_EVENT(block_rq, block_rq_insert,
295
296 TP_PROTO(struct request_queue *q, struct request *rq),
297
298 TP_ARGS(q, rq)
299 )
300
301 /**
302 * block_rq_issue - issue pending block IO request operation to device driver
303 * @q: queue holding operation
304 * @rq: block IO operation operation request
305 *
306 * Called when block operation request @rq from queue @q is sent to a
307 * device driver for processing.
308 */
309 DEFINE_EVENT(block_rq, block_rq_issue,
310
311 TP_PROTO(struct request_queue *q, struct request *rq),
312
313 TP_ARGS(q, rq)
314 )
315
316 /**
317 * block_bio_bounce - used bounce buffer when processing block operation
318 * @q: queue holding the block operation
319 * @bio: block operation
320 *
321 * A bounce buffer was used to handle the block operation @bio in @q.
322 * This occurs when hardware limitations prevent a direct transfer of
323 * data between the @bio data memory area and the IO device. Use of a
324 * bounce buffer requires extra copying of data and decreases
325 * performance.
326 */
327 TRACE_EVENT(block_bio_bounce,
328
329 TP_PROTO(struct request_queue *q, struct bio *bio),
330
331 TP_ARGS(q, bio),
332
333 TP_STRUCT__entry(
334 __field( dev_t, dev )
335 __field( sector_t, sector )
336 __field( unsigned int, nr_sector )
337 __field( unsigned int, rwbs )
338 __array_text( char, comm, TASK_COMM_LEN )
339 ),
340
341 TP_fast_assign(
342 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,14,0))
343 tp_assign(dev, bio->bi_bdev ?
344 bio->bi_bdev->bd_dev : 0)
345 tp_assign(sector, bio->bi_iter.bi_sector)
346 tp_assign(nr_sector, bio_sectors(bio))
347 blk_fill_rwbs(rwbs, bio->bi_rw, bio->bi_iter.bi_size)
348 tp_memcpy(comm, current->comm, TASK_COMM_LEN)
349 #else /* #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,14,0)) */
350 tp_assign(dev, bio->bi_bdev ?
351 bio->bi_bdev->bd_dev : 0)
352 tp_assign(sector, bio->bi_sector)
353 tp_assign(nr_sector, bio->bi_size >> 9)
354 blk_fill_rwbs(rwbs, bio->bi_rw, bio->bi_size)
355 tp_memcpy(comm, current->comm, TASK_COMM_LEN)
356 #endif /* #else #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,14,0)) */
357 ),
358
359 TP_printk("%d,%d %s %llu + %u [%s]",
360 MAJOR(__entry->dev), MINOR(__entry->dev),
361 __print_rwbs_flags(__entry->rwbs),
362 (unsigned long long)__entry->sector,
363 __entry->nr_sector, __entry->comm)
364 )
365
366 /**
367 * block_bio_complete - completed all work on the block operation
368 * @q: queue holding the block operation
369 * @bio: block operation completed
370 * @error: io error value
371 *
372 * This tracepoint indicates there is no further work to do on this
373 * block IO operation @bio.
374 */
375 TRACE_EVENT(block_bio_complete,
376
377 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,38))
378 TP_PROTO(struct request_queue *q, struct bio *bio, int error),
379
380 TP_ARGS(q, bio, error),
381 #else
382 TP_PROTO(struct request_queue *q, struct bio *bio),
383
384 TP_ARGS(q, bio),
385 #endif
386
387 TP_STRUCT__entry(
388 __field( dev_t, dev )
389 __field( sector_t, sector )
390 __field( unsigned, nr_sector )
391 __field( int, error )
392 __field( unsigned int, rwbs )
393 ),
394
395 TP_fast_assign(
396 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,14,0))
397 tp_assign(dev, bio->bi_bdev->bd_dev)
398 tp_assign(sector, bio->bi_iter.bi_sector)
399 tp_assign(nr_sector, bio_sectors(bio))
400 tp_assign(error, error)
401 blk_fill_rwbs(rwbs, bio->bi_rw, bio->bi_iter.bi_size)
402 #else /* #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,14,0)) */
403 tp_assign(dev, bio->bi_bdev->bd_dev)
404 tp_assign(sector, bio->bi_sector)
405 tp_assign(nr_sector, bio->bi_size >> 9)
406 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,38))
407 tp_assign(error, error)
408 #else
409 tp_assign(error, 0)
410 #endif
411 blk_fill_rwbs(rwbs, bio->bi_rw, bio->bi_size)
412 #endif /* #else #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,14,0)) */
413 ),
414
415 TP_printk("%d,%d %s %llu + %u [%d]",
416 MAJOR(__entry->dev), MINOR(__entry->dev),
417 __print_rwbs_flags(__entry->rwbs),
418 (unsigned long long)__entry->sector,
419 __entry->nr_sector, __entry->error)
420 )
421
422 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,9,0))
423 DECLARE_EVENT_CLASS(block_bio_merge,
424
425 TP_PROTO(struct request_queue *q, struct request *rq, struct bio *bio),
426
427 TP_ARGS(q, rq, bio),
428
429 TP_STRUCT__entry(
430 __field( dev_t, dev )
431 __field( sector_t, sector )
432 __field( unsigned int, nr_sector )
433 __field( unsigned int, rwbs )
434 __array_text( char, comm, TASK_COMM_LEN )
435 ),
436
437 TP_fast_assign(
438 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,14,0))
439 tp_assign(dev, bio->bi_bdev->bd_dev)
440 tp_assign(sector, bio->bi_iter.bi_sector)
441 tp_assign(nr_sector, bio_sectors(bio))
442 blk_fill_rwbs(rwbs, bio->bi_rw, bio->bi_iter.bi_size)
443 tp_memcpy(comm, current->comm, TASK_COMM_LEN)
444 #else /* #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,14,0)) */
445 tp_assign(dev, bio->bi_bdev->bd_dev)
446 tp_assign(sector, bio->bi_sector)
447 tp_assign(nr_sector, bio->bi_size >> 9)
448 blk_fill_rwbs(rwbs, bio->bi_rw, bio->bi_size)
449 tp_memcpy(comm, current->comm, TASK_COMM_LEN)
450 #endif /* #else #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,14,0)) */
451 ),
452
453 TP_printk("%d,%d %s %llu + %u [%s]",
454 MAJOR(__entry->dev), MINOR(__entry->dev),
455 __print_rwbs_flags(__entry->rwbs),
456 (unsigned long long)__entry->sector,
457 __entry->nr_sector, __entry->comm)
458 )
459
460 /**
461 * block_bio_backmerge - merging block operation to the end of an existing operation
462 * @q: queue holding operation
463 * @bio: new block operation to merge
464 *
465 * Merging block request @bio to the end of an existing block request
466 * in queue @q.
467 */
468 DEFINE_EVENT(block_bio_merge, block_bio_backmerge,
469
470 TP_PROTO(struct request_queue *q, struct request *rq, struct bio *bio),
471
472 TP_ARGS(q, rq, bio)
473 )
474
475 /**
476 * block_bio_frontmerge - merging block operation to the beginning of an existing operation
477 * @q: queue holding operation
478 * @bio: new block operation to merge
479 *
480 * Merging block IO operation @bio to the beginning of an existing block
481 * operation in queue @q.
482 */
483 DEFINE_EVENT(block_bio_merge, block_bio_frontmerge,
484
485 TP_PROTO(struct request_queue *q, struct request *rq, struct bio *bio),
486
487 TP_ARGS(q, rq, bio)
488 )
489
490 /**
491 * block_bio_queue - putting new block IO operation in queue
492 * @q: queue holding operation
493 * @bio: new block operation
494 *
495 * About to place the block IO operation @bio into queue @q.
496 */
497 TRACE_EVENT(block_bio_queue,
498
499 TP_PROTO(struct request_queue *q, struct bio *bio),
500
501 TP_ARGS(q, bio),
502
503 TP_STRUCT__entry(
504 __field( dev_t, dev )
505 __field( sector_t, sector )
506 __field( unsigned int, nr_sector )
507 __array( char, rwbs, RWBS_LEN )
508 __array( char, comm, TASK_COMM_LEN )
509 ),
510
511 TP_fast_assign(
512 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,14,0))
513 tp_assign(dev, bio->bi_bdev->bd_dev)
514 tp_assign(sector, bio->bi_iter.bi_sector)
515 tp_assign(nr_sector, bio_sectors(bio))
516 blk_fill_rwbs(rwbs, bio->bi_rw, bio->bi_iter.bi_size)
517 tp_memcpy(comm, current->comm, TASK_COMM_LEN)
518 #else /* #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,14,0)) */
519 tp_assign(dev, bio->bi_bdev->bd_dev)
520 tp_assign(sector, bio->bi_sector)
521 tp_assign(nr_sector, bio->bi_size >> 9)
522 blk_fill_rwbs(rwbs, bio->bi_rw, bio->bi_size)
523 tp_memcpy(comm, current->comm, TASK_COMM_LEN)
524 #endif /* #else #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,14,0)) */
525 ),
526
527 TP_printk("%d,%d %s %llu + %u [%s]",
528 MAJOR(__entry->dev), MINOR(__entry->dev), __entry->rwbs,
529 (unsigned long long)__entry->sector,
530 __entry->nr_sector, __entry->comm)
531 )
532 #else
533 DECLARE_EVENT_CLASS(block_bio,
534
535 TP_PROTO(struct request_queue *q, struct bio *bio),
536
537 TP_ARGS(q, bio),
538
539 TP_STRUCT__entry(
540 __field( dev_t, dev )
541 __field( sector_t, sector )
542 __field( unsigned int, nr_sector )
543 __field( unsigned int, rwbs )
544 __array_text( char, comm, TASK_COMM_LEN )
545 ),
546
547 TP_fast_assign(
548 tp_assign(dev, bio->bi_bdev ? bio->bi_bdev->bd_dev : 0)
549 tp_assign(sector, bio->bi_sector)
550 tp_assign(nr_sector, bio->bi_size >> 9)
551 blk_fill_rwbs(rwbs, bio->bi_rw, bio->bi_size)
552 tp_memcpy(comm, current->comm, TASK_COMM_LEN)
553 ),
554
555 TP_printk("%d,%d %s %llu + %u [%s]",
556 MAJOR(__entry->dev), MINOR(__entry->dev),
557 __print_rwbs_flags(__entry->rwbs),
558 (unsigned long long)__entry->sector,
559 __entry->nr_sector, __entry->comm)
560 )
561
562 /**
563 * block_bio_backmerge - merging block operation to the end of an existing operation
564 * @q: queue holding operation
565 * @bio: new block operation to merge
566 *
567 * Merging block request @bio to the end of an existing block request
568 * in queue @q.
569 */
570 DEFINE_EVENT(block_bio, block_bio_backmerge,
571
572 TP_PROTO(struct request_queue *q, struct bio *bio),
573
574 TP_ARGS(q, bio)
575 )
576
577 /**
578 * block_bio_frontmerge - merging block operation to the beginning of an existing operation
579 * @q: queue holding operation
580 * @bio: new block operation to merge
581 *
582 * Merging block IO operation @bio to the beginning of an existing block
583 * operation in queue @q.
584 */
585 DEFINE_EVENT(block_bio, block_bio_frontmerge,
586
587 TP_PROTO(struct request_queue *q, struct bio *bio),
588
589 TP_ARGS(q, bio)
590 )
591
592 /**
593 * block_bio_queue - putting new block IO operation in queue
594 * @q: queue holding operation
595 * @bio: new block operation
596 *
597 * About to place the block IO operation @bio into queue @q.
598 */
599 DEFINE_EVENT(block_bio, block_bio_queue,
600
601 TP_PROTO(struct request_queue *q, struct bio *bio),
602
603 TP_ARGS(q, bio)
604 )
605 #endif
606
607 DECLARE_EVENT_CLASS(block_get_rq,
608
609 TP_PROTO(struct request_queue *q, struct bio *bio, int rw),
610
611 TP_ARGS(q, bio, rw),
612
613 TP_STRUCT__entry(
614 __field( dev_t, dev )
615 __field( sector_t, sector )
616 __field( unsigned int, nr_sector )
617 __field( unsigned int, rwbs )
618 __array_text( char, comm, TASK_COMM_LEN )
619 ),
620
621 TP_fast_assign(
622 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,14,0))
623 tp_assign(dev, bio ? bio->bi_bdev->bd_dev : 0)
624 tp_assign(sector, bio ? bio->bi_iter.bi_sector : 0)
625 tp_assign(nr_sector, bio ? bio_sectors(bio) : 0)
626 blk_fill_rwbs(rwbs, bio ? bio->bi_rw : 0,
627 bio ? bio_sectors(bio) : 0)
628 tp_memcpy(comm, current->comm, TASK_COMM_LEN)
629 #else /* #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,14,0)) */
630 tp_assign(dev, bio ? bio->bi_bdev->bd_dev : 0)
631 tp_assign(sector, bio ? bio->bi_sector : 0)
632 tp_assign(nr_sector, bio ? bio->bi_size >> 9 : 0)
633 blk_fill_rwbs(rwbs, bio ? bio->bi_rw : 0,
634 bio ? bio->bi_size >> 9 : 0)
635 tp_memcpy(comm, current->comm, TASK_COMM_LEN)
636 #endif /* #else #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,14,0)) */
637 ),
638
639 TP_printk("%d,%d %s %llu + %u [%s]",
640 MAJOR(__entry->dev), MINOR(__entry->dev),
641 __print_rwbs_flags(__entry->rwbs),
642 (unsigned long long)__entry->sector,
643 __entry->nr_sector, __entry->comm)
644 )
645
646 /**
647 * block_getrq - get a free request entry in queue for block IO operations
648 * @q: queue for operations
649 * @bio: pending block IO operation
650 * @rw: low bit indicates a read (%0) or a write (%1)
651 *
652 * A request struct for queue @q has been allocated to handle the
653 * block IO operation @bio.
654 */
655 DEFINE_EVENT(block_get_rq, block_getrq,
656
657 TP_PROTO(struct request_queue *q, struct bio *bio, int rw),
658
659 TP_ARGS(q, bio, rw)
660 )
661
662 /**
663 * block_sleeprq - waiting to get a free request entry in queue for block IO operation
664 * @q: queue for operation
665 * @bio: pending block IO operation
666 * @rw: low bit indicates a read (%0) or a write (%1)
667 *
668 * In the case where a request struct cannot be provided for queue @q
669 * the process needs to wait for an request struct to become
670 * available. This tracepoint event is generated each time the
671 * process goes to sleep waiting for request struct become available.
672 */
673 DEFINE_EVENT(block_get_rq, block_sleeprq,
674
675 TP_PROTO(struct request_queue *q, struct bio *bio, int rw),
676
677 TP_ARGS(q, bio, rw)
678 )
679
680 /**
681 * block_plug - keep operations requests in request queue
682 * @q: request queue to plug
683 *
684 * Plug the request queue @q. Do not allow block operation requests
685 * to be sent to the device driver. Instead, accumulate requests in
686 * the queue to improve throughput performance of the block device.
687 */
688 TRACE_EVENT(block_plug,
689
690 TP_PROTO(struct request_queue *q),
691
692 TP_ARGS(q),
693
694 TP_STRUCT__entry(
695 __array_text( char, comm, TASK_COMM_LEN )
696 ),
697
698 TP_fast_assign(
699 tp_memcpy(comm, current->comm, TASK_COMM_LEN)
700 ),
701
702 TP_printk("[%s]", __entry->comm)
703 )
704
705 DECLARE_EVENT_CLASS(block_unplug,
706
707 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,39))
708 TP_PROTO(struct request_queue *q, unsigned int depth, bool explicit),
709
710 TP_ARGS(q, depth, explicit),
711 #else
712 TP_PROTO(struct request_queue *q),
713
714 TP_ARGS(q),
715 #endif
716
717 TP_STRUCT__entry(
718 __field( int, nr_rq )
719 __array_text( char, comm, TASK_COMM_LEN )
720 ),
721
722 TP_fast_assign(
723 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,39))
724 tp_assign(nr_rq, depth)
725 #else
726 tp_assign(nr_rq, q->rq.count[READ] + q->rq.count[WRITE])
727 #endif
728 tp_memcpy(comm, current->comm, TASK_COMM_LEN)
729 ),
730
731 TP_printk("[%s] %d", __entry->comm, __entry->nr_rq)
732 )
733
734 #if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,39))
735 /**
736 * block_unplug_timer - timed release of operations requests in queue to device driver
737 * @q: request queue to unplug
738 *
739 * Unplug the request queue @q because a timer expired and allow block
740 * operation requests to be sent to the device driver.
741 */
742 DEFINE_EVENT(block_unplug, block_unplug_timer,
743
744 TP_PROTO(struct request_queue *q),
745
746 TP_ARGS(q)
747 )
748 #endif
749
750 /**
751 * block_unplug - release of operations requests in request queue
752 * @q: request queue to unplug
753 * @depth: number of requests just added to the queue
754 * @explicit: whether this was an explicit unplug, or one from schedule()
755 *
756 * Unplug request queue @q because device driver is scheduled to work
757 * on elements in the request queue.
758 */
759 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,39))
760 DEFINE_EVENT(block_unplug, block_unplug,
761 #else
762 DEFINE_EVENT(block_unplug, block_unplug_io,
763 #endif
764
765 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,39))
766 TP_PROTO(struct request_queue *q, unsigned int depth, bool explicit),
767
768 TP_ARGS(q, depth, explicit)
769 #else
770 TP_PROTO(struct request_queue *q),
771
772 TP_ARGS(q)
773 #endif
774 )
775
776 /**
777 * block_split - split a single bio struct into two bio structs
778 * @q: queue containing the bio
779 * @bio: block operation being split
780 * @new_sector: The starting sector for the new bio
781 *
782 * The bio request @bio in request queue @q needs to be split into two
783 * bio requests. The newly created @bio request starts at
784 * @new_sector. This split may be required due to hardware limitation
785 * such as operation crossing device boundaries in a RAID system.
786 */
787 TRACE_EVENT(block_split,
788
789 TP_PROTO(struct request_queue *q, struct bio *bio,
790 unsigned int new_sector),
791
792 TP_ARGS(q, bio, new_sector),
793
794 TP_STRUCT__entry(
795 __field( dev_t, dev )
796 __field( sector_t, sector )
797 __field( sector_t, new_sector )
798 __field( unsigned int, rwbs )
799 __array_text( char, comm, TASK_COMM_LEN )
800 ),
801
802 TP_fast_assign(
803 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,14,0))
804 tp_assign(dev, bio->bi_bdev->bd_dev)
805 tp_assign(sector, bio->bi_iter.bi_sector)
806 tp_assign(new_sector, new_sector)
807 blk_fill_rwbs(rwbs, bio->bi_rw, bio->bi_iter.bi_size)
808 tp_memcpy(comm, current->comm, TASK_COMM_LEN)
809 #else /* #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,14,0)) */
810 tp_assign(dev, bio->bi_bdev->bd_dev)
811 tp_assign(sector, bio->bi_sector)
812 tp_assign(new_sector, new_sector)
813 blk_fill_rwbs(rwbs, bio->bi_rw, bio->bi_size)
814 tp_memcpy(comm, current->comm, TASK_COMM_LEN)
815 #endif /* #else #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,14,0)) */
816 ),
817
818 TP_printk("%d,%d %s %llu / %llu [%s]",
819 MAJOR(__entry->dev), MINOR(__entry->dev),
820 __print_rwbs_flags(__entry->rwbs),
821 (unsigned long long)__entry->sector,
822 (unsigned long long)__entry->new_sector,
823 __entry->comm)
824 )
825
826 /**
827 * block_bio_remap - map request for a logical device to the raw device
828 * @q: queue holding the operation
829 * @bio: revised operation
830 * @dev: device for the operation
831 * @from: original sector for the operation
832 *
833 * An operation for a logical device has been mapped to the
834 * raw block device.
835 */
836 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,38))
837 TRACE_EVENT(block_bio_remap,
838 #else
839 TRACE_EVENT(block_remap,
840 #endif
841
842 TP_PROTO(struct request_queue *q, struct bio *bio, dev_t dev,
843 sector_t from),
844
845 TP_ARGS(q, bio, dev, from),
846
847 TP_STRUCT__entry(
848 __field( dev_t, dev )
849 __field( sector_t, sector )
850 __field( unsigned int, nr_sector )
851 __field( dev_t, old_dev )
852 __field( sector_t, old_sector )
853 __field( unsigned int, rwbs )
854 ),
855
856 TP_fast_assign(
857 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,14,0))
858 tp_assign(dev, bio->bi_bdev->bd_dev)
859 tp_assign(sector, bio->bi_iter.bi_sector)
860 tp_assign(nr_sector, bio_sectors(bio))
861 tp_assign(old_dev, dev)
862 tp_assign(old_sector, from)
863 blk_fill_rwbs(rwbs, bio->bi_rw, bio->bi_iter.bi_size)
864 #else /* #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,14,0)) */
865 tp_assign(dev, bio->bi_bdev->bd_dev)
866 tp_assign(sector, bio->bi_sector)
867 tp_assign(nr_sector, bio->bi_size >> 9)
868 tp_assign(old_dev, dev)
869 tp_assign(old_sector, from)
870 blk_fill_rwbs(rwbs, bio->bi_rw, bio->bi_size)
871 #endif /* #else #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,14,0)) */
872 ),
873
874 TP_printk("%d,%d %s %llu + %u <- (%d,%d) %llu",
875 MAJOR(__entry->dev), MINOR(__entry->dev),
876 __print_rwbs_flags(__entry->rwbs),
877 (unsigned long long)__entry->sector,
878 __entry->nr_sector,
879 MAJOR(__entry->old_dev), MINOR(__entry->old_dev),
880 (unsigned long long)__entry->old_sector)
881 )
882
883 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,32))
884 /**
885 * block_rq_remap - map request for a block operation request
886 * @q: queue holding the operation
887 * @rq: block IO operation request
888 * @dev: device for the operation
889 * @from: original sector for the operation
890 *
891 * The block operation request @rq in @q has been remapped. The block
892 * operation request @rq holds the current information and @from hold
893 * the original sector.
894 */
895 TRACE_EVENT(block_rq_remap,
896
897 TP_PROTO(struct request_queue *q, struct request *rq, dev_t dev,
898 sector_t from),
899
900 TP_ARGS(q, rq, dev, from),
901
902 TP_STRUCT__entry(
903 __field( dev_t, dev )
904 __field( sector_t, sector )
905 __field( unsigned int, nr_sector )
906 __field( dev_t, old_dev )
907 __field( sector_t, old_sector )
908 __field( unsigned int, rwbs )
909 ),
910
911 TP_fast_assign(
912 tp_assign(dev, disk_devt(rq->rq_disk))
913 tp_assign(sector, blk_rq_pos(rq))
914 tp_assign(nr_sector, blk_rq_sectors(rq))
915 tp_assign(old_dev, dev)
916 tp_assign(old_sector, from)
917 blk_fill_rwbs(rwbs, rq->cmd_flags, blk_rq_bytes(rq))
918 ),
919
920 TP_printk("%d,%d %s %llu + %u <- (%d,%d) %llu",
921 MAJOR(__entry->dev), MINOR(__entry->dev),
922 __print_rwbs_flags(__entry->rwbs),
923 (unsigned long long)__entry->sector,
924 __entry->nr_sector,
925 MAJOR(__entry->old_dev), MINOR(__entry->old_dev),
926 (unsigned long long)__entry->old_sector)
927 )
928 #endif
929
930 #undef __print_rwbs_flags
931 #undef blk_fill_rwbs
932
933 #endif /* _TRACE_BLOCK_H */
934
935 /* This part must be outside protection */
936 #include "../../../probes/define_trace.h"
937
LTTng 2.0/0.x modules
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