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Fix: update block instrumentation to 3.15 kernel
[lttng-modules.git] / instrumentation / events / lttng-module / block.h
CommitLineData
f62b389e
MD		 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>
7c68b363
AG		 11#include <linux/version.h>
12
13#define RWBS_LEN 8
f62b389e
MD		 14
15#ifndef _TRACE_BLOCK_DEF_
16#define _TRACE_BLOCK_DEF_
17
18#define __blk_dump_cmd(cmd, len) "<unknown>"
19
20enum {
21 RWBS_FLAG_WRITE = (1 << 0),
22 RWBS_FLAG_DISCARD = (1 << 1),
23 RWBS_FLAG_READ = (1 << 2),
24 RWBS_FLAG_RAHEAD = (1 << 3),
7c68b363
AG		 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),
f62b389e
MD		 31};
32
33#endif /* _TRACE_BLOCK_DEF_ */
34
35#define __print_rwbs_flags(rwbs) \
36 __print_flags(rwbs, "", \
7c68b363 37 { RWBS_FLAG_FLUSH, "F" }, \
f62b389e
MD		 38 { RWBS_FLAG_WRITE, "W" }, \
39 { RWBS_FLAG_DISCARD, "D" }, \
40 { RWBS_FLAG_READ, "R" }, \
7c68b363 41 { RWBS_FLAG_FUA, "F" }, \
f62b389e 42 { RWBS_FLAG_RAHEAD, "A" }, \
7c68b363 43 { RWBS_FLAG_BARRIER, "B" }, \
f62b389e
MD		 44 { RWBS_FLAG_SYNC, "S" }, \
45 { RWBS_FLAG_META, "M" }, \
46 { RWBS_FLAG_SECURE, "E" })
47
7c68b363
AG		 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
f62b389e
MD		 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
7c68b363
AG		 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
217f66c6
MD		 101#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,9,0))
102DECLARE_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 */
132DEFINE_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 */
145DEFINE_EVENT(block_buffer, block_dirty_buffer,
146
147 TP_PROTO(struct buffer_head *bh),
148
149 TP_ARGS(bh)
150)
151#endif
152
f62b389e
MD		 153DECLARE_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 )
16830439
MD		 165 __dynamic_array_hex( unsigned char, cmd,
166 (rq->cmd_type == REQ_TYPE_BLOCK_PC) ?
167 rq->cmd_len : 0)
f62b389e
MD		 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))
e17d7b27 178 tp_memcpy_dyn(cmd, (rq->cmd_type == REQ_TYPE_BLOCK_PC) ?
217f66c6 179 rq->cmd : NULL)
f62b389e
MD		 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 */
201DEFINE_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 */
217DEFINE_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
1c53e689
MD		 224#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,15,0))
225
226/**
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
231 *
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.
237 */
238TRACE_EVENT(block_rq_complete,
239
240 TP_PROTO(struct request_queue *q, struct request *rq,
241 unsigned int nr_bytes),
242
243 TP_ARGS(q, rq, nr_bytes),
244
245 TP_STRUCT__entry(
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) ?
253 rq->cmd_len : 0)
254 ),
255
256 TP_fast_assign(
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) ?
263 rq->cmd : NULL)
264 ),
265
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)
271)
272
273#else /* #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,15,0)) */
274
f62b389e
MD		 275/**
276 * block_rq_complete - block IO operation completed by device driver
277 * @q: queue containing the block operation request
278 * @rq: block operations request
279 *
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.
285 */
286DEFINE_EVENT(block_rq_with_error, block_rq_complete,
287
288 TP_PROTO(struct request_queue *q, struct request *rq),
289
290 TP_ARGS(q, rq)
291)
292
1c53e689
MD		 293#endif /* #else #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,15,0)) */
294
f62b389e
MD		 295DECLARE_EVENT_CLASS(block_rq,
296
297 TP_PROTO(struct request_queue *q, struct request *rq),
298
299 TP_ARGS(q, rq),
300
301 TP_STRUCT__entry(
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 )
64c796d8 307 __array_text( char, comm, TASK_COMM_LEN )
16830439
MD		 308 __dynamic_array_hex( unsigned char, cmd,
309 (rq->cmd_type == REQ_TYPE_BLOCK_PC) ?
310 rq->cmd_len : 0)
f62b389e
MD		 311 ),
312
313 TP_fast_assign(
314 tp_assign(dev, rq->rq_disk ? disk_devt(rq->rq_disk) : 0)
315 tp_assign(sector, (rq->cmd_type == REQ_TYPE_BLOCK_PC) ?
316 0 : blk_rq_pos(rq))
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))
e17d7b27 322 tp_memcpy_dyn(cmd, (rq->cmd_type == REQ_TYPE_BLOCK_PC) ?
217f66c6 323 rq->cmd : NULL)
f62b389e
MD		 324 tp_memcpy(comm, current->comm, TASK_COMM_LEN)
325 ),
326
327 TP_printk("%d,%d %s %u (%s) %llu + %u [%s]",
328 MAJOR(__entry->dev), MINOR(__entry->dev),
329 __print_rwbs_flags(__entry->rwbs),
330 __entry->bytes,
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)
335)
336
337/**
338 * block_rq_insert - insert block operation request into queue
339 * @q: target queue
340 * @rq: block IO operation request
341 *
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.
346 */
347DEFINE_EVENT(block_rq, block_rq_insert,
348
349 TP_PROTO(struct request_queue *q, struct request *rq),
350
351 TP_ARGS(q, rq)
352)
353
354/**
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
358 *
359 * Called when block operation request @rq from queue @q is sent to a
360 * device driver for processing.
361 */
362DEFINE_EVENT(block_rq, block_rq_issue,
363
364 TP_PROTO(struct request_queue *q, struct request *rq),
365
366 TP_ARGS(q, rq)
367)
368
369/**
370 * block_bio_bounce - used bounce buffer when processing block operation
371 * @q: queue holding the block operation
372 * @bio: block operation
373 *
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
378 * performance.
379 */
380TRACE_EVENT(block_bio_bounce,
381
382 TP_PROTO(struct request_queue *q, struct bio *bio),
383
384 TP_ARGS(q, bio),
385
386 TP_STRUCT__entry(
387 __field( dev_t, dev )
388 __field( sector_t, sector )
389 __field( unsigned int, nr_sector )
390 __field( unsigned int, rwbs )
64c796d8 391 __array_text( char, comm, TASK_COMM_LEN )
f62b389e
MD		 392 ),
393
394 TP_fast_assign(
54c4c2e3
MD		 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)) */
f62b389e
MD		 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)
54c4c2e3 409#endif /* #else #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,14,0)) */
f62b389e
MD		 410 ),
411
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)
417)
418
419/**
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
424 *
425 * This tracepoint indicates there is no further work to do on this
426 * block IO operation @bio.
427 */
428TRACE_EVENT(block_bio_complete,
429
1bc491fc 430#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,38))
f62b389e
MD		 431 TP_PROTO(struct request_queue *q, struct bio *bio, int error),
432
433 TP_ARGS(q, bio, error),
7c68b363
AG		 434#else
435 TP_PROTO(struct request_queue *q, struct bio *bio),
436
437 TP_ARGS(q, bio),
438#endif
f62b389e
MD		 439
440 TP_STRUCT__entry(
441 __field( dev_t, dev )
442 __field( sector_t, sector )
443 __field( unsigned, nr_sector )
444 __field( int, error )
445 __field( unsigned int, rwbs )
446 ),
447
448 TP_fast_assign(
54c4c2e3
MD		 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)) */
f62b389e
MD		 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)
7c68b363 459#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,38))
f62b389e 460 tp_assign(error, error)
7c68b363
AG		 461#else
462 tp_assign(error, 0)
463#endif
f62b389e 464 blk_fill_rwbs(rwbs, bio->bi_rw, bio->bi_size)
54c4c2e3 465#endif /* #else #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,14,0)) */
f62b389e
MD		 466 ),
467
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)
473)
474
217f66c6
MD		 475#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,9,0))
476DECLARE_EVENT_CLASS(block_bio_merge,
477
478 TP_PROTO(struct request_queue *q, struct request *rq, struct bio *bio),
479
480 TP_ARGS(q, rq, bio),
481
482 TP_STRUCT__entry(
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 )
488 ),
489
490 TP_fast_assign(
54c4c2e3
MD		 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)) */
217f66c6
MD		 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)
54c4c2e3 503#endif /* #else #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,14,0)) */
217f66c6
MD		 504 ),
505
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)
511)
512
513/**
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
517 *
518 * Merging block request @bio to the end of an existing block request
519 * in queue @q.
520 */
521DEFINE_EVENT(block_bio_merge, block_bio_backmerge,
522
523 TP_PROTO(struct request_queue *q, struct request *rq, struct bio *bio),
524
525 TP_ARGS(q, rq, bio)
526)
527
528/**
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
532 *
533 * Merging block IO operation @bio to the beginning of an existing block
534 * operation in queue @q.
535 */
536DEFINE_EVENT(block_bio_merge, block_bio_frontmerge,
537
538 TP_PROTO(struct request_queue *q, struct request *rq, struct bio *bio),
539
540 TP_ARGS(q, rq, bio)
541)
542
543/**
544 * block_bio_queue - putting new block IO operation in queue
545 * @q: queue holding operation
546 * @bio: new block operation
547 *
548 * About to place the block IO operation @bio into queue @q.
549 */
550TRACE_EVENT(block_bio_queue,
551
552 TP_PROTO(struct request_queue *q, struct bio *bio),
553
554 TP_ARGS(q, bio),
555
556 TP_STRUCT__entry(
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 )
562 ),
563
564 TP_fast_assign(
54c4c2e3
MD		 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)) */
217f66c6
MD		 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)
54c4c2e3 577#endif /* #else #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,14,0)) */
217f66c6
MD		 578 ),
579
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)
584)
585#else
f62b389e
MD		 586DECLARE_EVENT_CLASS(block_bio,
587
588 TP_PROTO(struct request_queue *q, struct bio *bio),
589
590 TP_ARGS(q, bio),
591
592 TP_STRUCT__entry(
593 __field( dev_t, dev )
594 __field( sector_t, sector )
595 __field( unsigned int, nr_sector )
596 __field( unsigned int, rwbs )
64c796d8 597 __array_text( char, comm, TASK_COMM_LEN )
f62b389e
MD		 598 ),
599
600 TP_fast_assign(
058e913a 601 tp_assign(dev, bio->bi_bdev ? bio->bi_bdev->bd_dev : 0)
f62b389e
MD		 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)
606 ),
607
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)
613)
614
615/**
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
619 *
620 * Merging block request @bio to the end of an existing block request
621 * in queue @q.
622 */
623DEFINE_EVENT(block_bio, block_bio_backmerge,
624
625 TP_PROTO(struct request_queue *q, struct bio *bio),
626
627 TP_ARGS(q, bio)
628)
629
630/**
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
634 *
635 * Merging block IO operation @bio to the beginning of an existing block
636 * operation in queue @q.
637 */
638DEFINE_EVENT(block_bio, block_bio_frontmerge,
639
640 TP_PROTO(struct request_queue *q, struct bio *bio),
641
642 TP_ARGS(q, bio)
643)
644
645/**
646 * block_bio_queue - putting new block IO operation in queue
647 * @q: queue holding operation
648 * @bio: new block operation
649 *
650 * About to place the block IO operation @bio into queue @q.
651 */
652DEFINE_EVENT(block_bio, block_bio_queue,
653
654 TP_PROTO(struct request_queue *q, struct bio *bio),
655
656 TP_ARGS(q, bio)
657)
217f66c6 658#endif
f62b389e
MD		 659
660DECLARE_EVENT_CLASS(block_get_rq,
661
662 TP_PROTO(struct request_queue *q, struct bio *bio, int rw),
663
664 TP_ARGS(q, bio, rw),
665
666 TP_STRUCT__entry(
667 __field( dev_t, dev )
668 __field( sector_t, sector )
669 __field( unsigned int, nr_sector )
670 __field( unsigned int, rwbs )
64c796d8 671 __array_text( char, comm, TASK_COMM_LEN )
f62b389e
MD		 672 ),
673
674 TP_fast_assign(
54c4c2e3
MD		 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)) */
f62b389e
MD		 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)
54c4c2e3 689#endif /* #else #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,14,0)) */
f62b389e
MD		 690 ),
691
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)
697)
698
699/**
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)
704 *
705 * A request struct for queue @q has been allocated to handle the
706 * block IO operation @bio.
707 */
708DEFINE_EVENT(block_get_rq, block_getrq,
709
710 TP_PROTO(struct request_queue *q, struct bio *bio, int rw),
711
712 TP_ARGS(q, bio, rw)
713)
714
715/**
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)
720 *
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.
725 */
726DEFINE_EVENT(block_get_rq, block_sleeprq,
727
728 TP_PROTO(struct request_queue *q, struct bio *bio, int rw),
729
730 TP_ARGS(q, bio, rw)
731)
732
733/**
734 * block_plug - keep operations requests in request queue
735 * @q: request queue to plug
736 *
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.
740 */
741TRACE_EVENT(block_plug,
742
743 TP_PROTO(struct request_queue *q),
744
745 TP_ARGS(q),
746
747 TP_STRUCT__entry(
64c796d8 748 __array_text( char, comm, TASK_COMM_LEN )
f62b389e
MD		 749 ),
750
751 TP_fast_assign(
752 tp_memcpy(comm, current->comm, TASK_COMM_LEN)
753 ),
754
755 TP_printk("[%s]", __entry->comm)
756)
757
758DECLARE_EVENT_CLASS(block_unplug,
759
7c68b363 760#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,39))
f62b389e
MD		 761 TP_PROTO(struct request_queue *q, unsigned int depth, bool explicit),
762
763 TP_ARGS(q, depth, explicit),
7c68b363
AG		 764#else
765 TP_PROTO(struct request_queue *q),
766
767 TP_ARGS(q),
768#endif
f62b389e
MD		 769
770 TP_STRUCT__entry(
771 __field( int, nr_rq )
64c796d8 772 __array_text( char, comm, TASK_COMM_LEN )
f62b389e
MD		 773 ),
774
775 TP_fast_assign(
7c68b363 776#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,39))
f62b389e 777 tp_assign(nr_rq, depth)
7c68b363
AG		 778#else
779 tp_assign(nr_rq, q->rq.count[READ] + q->rq.count[WRITE])
780#endif
f62b389e
MD		 781 tp_memcpy(comm, current->comm, TASK_COMM_LEN)
782 ),
783
784 TP_printk("[%s] %d", __entry->comm, __entry->nr_rq)
785)
786
7c68b363
AG		 787#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,39))
788/**
789 * block_unplug_timer - timed release of operations requests in queue to device driver
790 * @q: request queue to unplug
791 *
792 * Unplug the request queue @q because a timer expired and allow block
793 * operation requests to be sent to the device driver.
794 */
795DEFINE_EVENT(block_unplug, block_unplug_timer,
796
797 TP_PROTO(struct request_queue *q),
798
799 TP_ARGS(q)
800)
801#endif
802
f62b389e
MD		 803/**
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()
808 *
809 * Unplug request queue @q because device driver is scheduled to work
810 * on elements in the request queue.
811 */
7c68b363 812#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,39))
f62b389e 813DEFINE_EVENT(block_unplug, block_unplug,
7c68b363
AG		 814#else
815DEFINE_EVENT(block_unplug, block_unplug_io,
816#endif
f62b389e 817
7c68b363 818#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,39))
f62b389e
MD		 819 TP_PROTO(struct request_queue *q, unsigned int depth, bool explicit),
820
821 TP_ARGS(q, depth, explicit)
7c68b363
AG		 822#else
823 TP_PROTO(struct request_queue *q),
824
825 TP_ARGS(q)
826#endif
f62b389e
MD		 827)
828
829/**
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
834 *
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.
839 */
840TRACE_EVENT(block_split,
841
842 TP_PROTO(struct request_queue *q, struct bio *bio,
843 unsigned int new_sector),
844
845 TP_ARGS(q, bio, new_sector),
846
847 TP_STRUCT__entry(
848 __field( dev_t, dev )
849 __field( sector_t, sector )
850 __field( sector_t, new_sector )
851 __field( unsigned int, rwbs )
64c796d8 852 __array_text( char, comm, TASK_COMM_LEN )
f62b389e
MD		 853 ),
854
855 TP_fast_assign(
54c4c2e3
MD		 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)) */
f62b389e
MD		 863 tp_assign(dev, bio->bi_bdev->bd_dev)
864 tp_assign(sector, bio->bi_sector)
865 tp_assign(new_sector, new_sector)
08fa6ec9 866 blk_fill_rwbs(rwbs, bio->bi_rw, bio->bi_size)
f62b389e 867 tp_memcpy(comm, current->comm, TASK_COMM_LEN)
54c4c2e3 868#endif /* #else #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,14,0)) */
f62b389e
MD		 869 ),
870
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,
876 __entry->comm)
877)
878
879/**
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
885 *
886 * An operation for a logical device has been mapped to the
887 * raw block device.
888 */
7c68b363 889#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,38))
f62b389e 890TRACE_EVENT(block_bio_remap,
7c68b363
AG		 891#else
892TRACE_EVENT(block_remap,
893#endif
f62b389e
MD		 894
895 TP_PROTO(struct request_queue *q, struct bio *bio, dev_t dev,
896 sector_t from),
897
898 TP_ARGS(q, bio, dev, from),
899
900 TP_STRUCT__entry(
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 )
907 ),
908
909 TP_fast_assign(
54c4c2e3
MD		 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)) */
f62b389e
MD		 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)
54c4c2e3 924#endif /* #else #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,14,0)) */
f62b389e
MD		 925 ),
926
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,
931 __entry->nr_sector,
932 MAJOR(__entry->old_dev), MINOR(__entry->old_dev),
933 (unsigned long long)__entry->old_sector)
934)
935
7c68b363 936#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,32))
f62b389e
MD		 937/**
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
943 *
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.
947 */
948TRACE_EVENT(block_rq_remap,
949
950 TP_PROTO(struct request_queue *q, struct request *rq, dev_t dev,
951 sector_t from),
952
953 TP_ARGS(q, rq, dev, from),
954
955 TP_STRUCT__entry(
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 )
962 ),
963
964 TP_fast_assign(
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))
971 ),
972
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,
977 __entry->nr_sector,
978 MAJOR(__entry->old_dev), MINOR(__entry->old_dev),
979 (unsigned long long)__entry->old_sector)
980)
7c68b363 981#endif
f62b389e
MD		 982
983#undef __print_rwbs_flags
984#undef blk_fill_rwbs
985
986#endif /* _TRACE_BLOCK_H */
987
988/* This part must be outside protection */
5b88d86e 989#include "../../../probes/define_trace.h"
f62b389e 990
LTTng 2.0/0.x modules
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