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Fix block_rq_complete TP on Ubuntu kernel
[lttng-modules.git] / instrumentation / events / lttng-module / block.h
1 #undef TRACE_SYSTEM
2 #define TRACE_SYSTEM block
3
4 #if !defined(LTTNG_TRACE_BLOCK_H) || defined(TRACE_HEADER_MULTI_READ)
5 #define LTTNG_TRACE_BLOCK_H
6
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>
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 LTTNG_TRACEPOINT_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 LTTNG_TRACEPOINT_EVENT_INSTANCE(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 LTTNG_TRACEPOINT_EVENT_INSTANCE(block_buffer, block_dirty_buffer,
146
147 TP_PROTO(struct buffer_head *bh),
148
149 TP_ARGS(bh)
150 )
151 #endif
152
153 LTTNG_TRACEPOINT_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 LTTNG_TRACEPOINT_EVENT_INSTANCE(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 LTTNG_TRACEPOINT_EVENT_INSTANCE(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 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,14,5) \
225 || LTTNG_KERNEL_RANGE(3,12,21, 3,13,0) \
226 || LTTNG_KERNEL_RANGE(3,10,41, 3,11,0) \
227 || LTTNG_KERNEL_RANGE(3,4,91, 3,5,0) \
228 || LTTNG_KERNEL_RANGE(3,2,58, 3,3,0) \
229 || LTTNG_UBUNTU_KERNEL_RANGE(3,13,11,31, 3,14,0,0))
230
231 /**
232 * block_rq_complete - block IO operation completed by device driver
233 * @q: queue containing the block operation request
234 * @rq: block operations request
235 * @nr_bytes: number of completed bytes
236 *
237 * The block_rq_complete tracepoint event indicates that some portion
238 * of operation request has been completed by the device driver. If
239 * the @rq->bio is %NULL, then there is absolutely no additional work to
240 * do for the request. If @rq->bio is non-NULL then there is
241 * additional work required to complete the request.
242 */
243 LTTNG_TRACEPOINT_EVENT(block_rq_complete,
244
245 TP_PROTO(struct request_queue *q, struct request *rq,
246 unsigned int nr_bytes),
247
248 TP_ARGS(q, rq, nr_bytes),
249
250 TP_STRUCT__entry(
251 __field( dev_t, dev )
252 __field( sector_t, sector )
253 __field( unsigned int, nr_sector )
254 __field( int, errors )
255 __field( unsigned int, rwbs )
256 __dynamic_array_hex( unsigned char, cmd,
257 (rq->cmd_type == REQ_TYPE_BLOCK_PC) ?
258 rq->cmd_len : 0)
259 ),
260
261 TP_fast_assign(
262 tp_assign(dev, rq->rq_disk ? disk_devt(rq->rq_disk) : 0)
263 tp_assign(sector, blk_rq_pos(rq))
264 tp_assign(nr_sector, nr_bytes >> 9)
265 tp_assign(errors, rq->errors)
266 blk_fill_rwbs(rwbs, rq->cmd_flags, nr_bytes)
267 tp_memcpy_dyn(cmd, (rq->cmd_type == REQ_TYPE_BLOCK_PC) ?
268 rq->cmd : NULL)
269 ),
270
271 TP_printk("%d,%d %s (%s) %llu + %u [%d]",
272 MAJOR(__entry->dev), MINOR(__entry->dev),
273 __entry->rwbs, __get_str(cmd),
274 (unsigned long long)__entry->sector,
275 __entry->nr_sector, __entry->errors)
276 )
277
278 #else /* #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,15,0)) */
279
280 /**
281 * block_rq_complete - block IO operation completed by device driver
282 * @q: queue containing the block operation request
283 * @rq: block operations request
284 *
285 * The block_rq_complete tracepoint event indicates that some portion
286 * of operation request has been completed by the device driver. If
287 * the @rq->bio is %NULL, then there is absolutely no additional work to
288 * do for the request. If @rq->bio is non-NULL then there is
289 * additional work required to complete the request.
290 */
291 LTTNG_TRACEPOINT_EVENT_INSTANCE(block_rq_with_error, block_rq_complete,
292
293 TP_PROTO(struct request_queue *q, struct request *rq),
294
295 TP_ARGS(q, rq)
296 )
297
298 #endif /* #else #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,15,0)) */
299
300 LTTNG_TRACEPOINT_EVENT_CLASS(block_rq,
301
302 TP_PROTO(struct request_queue *q, struct request *rq),
303
304 TP_ARGS(q, rq),
305
306 TP_STRUCT__entry(
307 __field( dev_t, dev )
308 __field( sector_t, sector )
309 __field( unsigned int, nr_sector )
310 __field( unsigned int, bytes )
311 __field( unsigned int, rwbs )
312 __field( pid_t, tid )
313 __array_text( char, comm, TASK_COMM_LEN )
314 __dynamic_array_hex( unsigned char, cmd,
315 (rq->cmd_type == REQ_TYPE_BLOCK_PC) ?
316 rq->cmd_len : 0)
317 ),
318
319 TP_fast_assign(
320 tp_assign(dev, rq->rq_disk ? disk_devt(rq->rq_disk) : 0)
321 tp_assign(sector, (rq->cmd_type == REQ_TYPE_BLOCK_PC) ?
322 0 : blk_rq_pos(rq))
323 tp_assign(nr_sector, (rq->cmd_type == REQ_TYPE_BLOCK_PC) ?
324 0 : blk_rq_sectors(rq))
325 tp_assign(bytes, (rq->cmd_type == REQ_TYPE_BLOCK_PC) ?
326 blk_rq_bytes(rq) : 0)
327 blk_fill_rwbs(rwbs, rq->cmd_flags, blk_rq_bytes(rq))
328 tp_memcpy_dyn(cmd, (rq->cmd_type == REQ_TYPE_BLOCK_PC) ?
329 rq->cmd : NULL)
330 tp_memcpy(comm, current->comm, TASK_COMM_LEN)
331 tp_assign(tid, current->pid)
332 ),
333
334 TP_printk("%d,%d %s %u (%s) %llu + %u [%s] %d",
335 MAJOR(__entry->dev), MINOR(__entry->dev),
336 __print_rwbs_flags(__entry->rwbs),
337 __entry->bytes,
338 __blk_dump_cmd(__get_dynamic_array(cmd),
339 __get_dynamic_array_len(cmd)),
340 (unsigned long long)__entry->sector,
341 __entry->nr_sector, __entry->comm, __entry->tid)
342 )
343
344 /**
345 * block_rq_insert - insert block operation request into queue
346 * @q: target queue
347 * @rq: block IO operation request
348 *
349 * Called immediately before block operation request @rq is inserted
350 * into queue @q. The fields in the operation request @rq struct can
351 * be examined to determine which device and sectors the pending
352 * operation would access.
353 */
354 LTTNG_TRACEPOINT_EVENT_INSTANCE(block_rq, block_rq_insert,
355
356 TP_PROTO(struct request_queue *q, struct request *rq),
357
358 TP_ARGS(q, rq)
359 )
360
361 /**
362 * block_rq_issue - issue pending block IO request operation to device driver
363 * @q: queue holding operation
364 * @rq: block IO operation operation request
365 *
366 * Called when block operation request @rq from queue @q is sent to a
367 * device driver for processing.
368 */
369 LTTNG_TRACEPOINT_EVENT_INSTANCE(block_rq, block_rq_issue,
370
371 TP_PROTO(struct request_queue *q, struct request *rq),
372
373 TP_ARGS(q, rq)
374 )
375
376 /**
377 * block_bio_bounce - used bounce buffer when processing block operation
378 * @q: queue holding the block operation
379 * @bio: block operation
380 *
381 * A bounce buffer was used to handle the block operation @bio in @q.
382 * This occurs when hardware limitations prevent a direct transfer of
383 * data between the @bio data memory area and the IO device. Use of a
384 * bounce buffer requires extra copying of data and decreases
385 * performance.
386 */
387 LTTNG_TRACEPOINT_EVENT(block_bio_bounce,
388
389 TP_PROTO(struct request_queue *q, struct bio *bio),
390
391 TP_ARGS(q, bio),
392
393 TP_STRUCT__entry(
394 __field( dev_t, dev )
395 __field( sector_t, sector )
396 __field( unsigned int, nr_sector )
397 __field( unsigned int, rwbs )
398 __field( pid_t, tid )
399 __array_text( char, comm, TASK_COMM_LEN )
400 ),
401
402 TP_fast_assign(
403 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,14,0))
404 tp_assign(dev, bio->bi_bdev ?
405 bio->bi_bdev->bd_dev : 0)
406 tp_assign(sector, bio->bi_iter.bi_sector)
407 tp_assign(nr_sector, bio_sectors(bio))
408 blk_fill_rwbs(rwbs, bio->bi_rw, bio->bi_iter.bi_size)
409 tp_memcpy(comm, current->comm, TASK_COMM_LEN)
410 tp_assign(tid, current->pid)
411 #else /* #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,14,0)) */
412 tp_assign(dev, bio->bi_bdev ?
413 bio->bi_bdev->bd_dev : 0)
414 tp_assign(sector, bio->bi_sector)
415 tp_assign(nr_sector, bio->bi_size >> 9)
416 blk_fill_rwbs(rwbs, bio->bi_rw, bio->bi_size)
417 tp_memcpy(comm, current->comm, TASK_COMM_LEN)
418 tp_assign(tid, current->pid)
419 #endif /* #else #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,14,0)) */
420 ),
421
422 TP_printk("%d,%d %s %llu + %u [%s] %d",
423 MAJOR(__entry->dev), MINOR(__entry->dev),
424 __print_rwbs_flags(__entry->rwbs),
425 (unsigned long long)__entry->sector,
426 __entry->nr_sector, __entry->comm, __entry->tid)
427 )
428
429 /**
430 * block_bio_complete - completed all work on the block operation
431 * @q: queue holding the block operation
432 * @bio: block operation completed
433 * @error: io error value
434 *
435 * This tracepoint indicates there is no further work to do on this
436 * block IO operation @bio.
437 */
438 LTTNG_TRACEPOINT_EVENT(block_bio_complete,
439
440 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,38))
441 TP_PROTO(struct request_queue *q, struct bio *bio, int error),
442
443 TP_ARGS(q, bio, error),
444 #else
445 TP_PROTO(struct request_queue *q, struct bio *bio),
446
447 TP_ARGS(q, bio),
448 #endif
449
450 TP_STRUCT__entry(
451 __field( dev_t, dev )
452 __field( sector_t, sector )
453 __field( unsigned, nr_sector )
454 __field( int, error )
455 __field( unsigned int, rwbs )
456 ),
457
458 TP_fast_assign(
459 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,14,0))
460 tp_assign(dev, bio->bi_bdev->bd_dev)
461 tp_assign(sector, bio->bi_iter.bi_sector)
462 tp_assign(nr_sector, bio_sectors(bio))
463 tp_assign(error, error)
464 blk_fill_rwbs(rwbs, bio->bi_rw, bio->bi_iter.bi_size)
465 #else /* #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,14,0)) */
466 tp_assign(dev, bio->bi_bdev->bd_dev)
467 tp_assign(sector, bio->bi_sector)
468 tp_assign(nr_sector, bio->bi_size >> 9)
469 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,38))
470 tp_assign(error, error)
471 #else
472 tp_assign(error, 0)
473 #endif
474 blk_fill_rwbs(rwbs, bio->bi_rw, bio->bi_size)
475 #endif /* #else #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,14,0)) */
476 ),
477
478 TP_printk("%d,%d %s %llu + %u [%d]",
479 MAJOR(__entry->dev), MINOR(__entry->dev),
480 __print_rwbs_flags(__entry->rwbs),
481 (unsigned long long)__entry->sector,
482 __entry->nr_sector, __entry->error)
483 )
484
485 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,9,0))
486 LTTNG_TRACEPOINT_EVENT_CLASS(block_bio_merge,
487
488 TP_PROTO(struct request_queue *q, struct request *rq, struct bio *bio),
489
490 TP_ARGS(q, rq, bio),
491
492 TP_STRUCT__entry(
493 __field( dev_t, dev )
494 __field( sector_t, sector )
495 __field( unsigned int, nr_sector )
496 __field( unsigned int, rwbs )
497 __field( pid_t, tid )
498 __array_text( char, comm, TASK_COMM_LEN )
499 ),
500
501 TP_fast_assign(
502 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,14,0))
503 tp_assign(dev, bio->bi_bdev->bd_dev)
504 tp_assign(sector, bio->bi_iter.bi_sector)
505 tp_assign(nr_sector, bio_sectors(bio))
506 blk_fill_rwbs(rwbs, bio->bi_rw, bio->bi_iter.bi_size)
507 tp_memcpy(comm, current->comm, TASK_COMM_LEN)
508 tp_assign(tid, current->pid)
509 #else /* #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,14,0)) */
510 tp_assign(dev, bio->bi_bdev->bd_dev)
511 tp_assign(sector, bio->bi_sector)
512 tp_assign(nr_sector, bio->bi_size >> 9)
513 blk_fill_rwbs(rwbs, bio->bi_rw, bio->bi_size)
514 tp_memcpy(comm, current->comm, TASK_COMM_LEN)
515 tp_assign(tid, current->pid)
516 #endif /* #else #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,14,0)) */
517 ),
518
519 TP_printk("%d,%d %s %llu + %u [%s] %d",
520 MAJOR(__entry->dev), MINOR(__entry->dev),
521 __print_rwbs_flags(__entry->rwbs),
522 (unsigned long long)__entry->sector,
523 __entry->nr_sector, __entry->comm, __entry->tid)
524 )
525
526 /**
527 * block_bio_backmerge - merging block operation to the end of an existing operation
528 * @q: queue holding operation
529 * @bio: new block operation to merge
530 *
531 * Merging block request @bio to the end of an existing block request
532 * in queue @q.
533 */
534 LTTNG_TRACEPOINT_EVENT_INSTANCE(block_bio_merge, block_bio_backmerge,
535
536 TP_PROTO(struct request_queue *q, struct request *rq, struct bio *bio),
537
538 TP_ARGS(q, rq, bio)
539 )
540
541 /**
542 * block_bio_frontmerge - merging block operation to the beginning of an existing operation
543 * @q: queue holding operation
544 * @bio: new block operation to merge
545 *
546 * Merging block IO operation @bio to the beginning of an existing block
547 * operation in queue @q.
548 */
549 LTTNG_TRACEPOINT_EVENT_INSTANCE(block_bio_merge, block_bio_frontmerge,
550
551 TP_PROTO(struct request_queue *q, struct request *rq, struct bio *bio),
552
553 TP_ARGS(q, rq, bio)
554 )
555
556 /**
557 * block_bio_queue - putting new block IO operation in queue
558 * @q: queue holding operation
559 * @bio: new block operation
560 *
561 * About to place the block IO operation @bio into queue @q.
562 */
563 LTTNG_TRACEPOINT_EVENT(block_bio_queue,
564
565 TP_PROTO(struct request_queue *q, struct bio *bio),
566
567 TP_ARGS(q, bio),
568
569 TP_STRUCT__entry(
570 __field( dev_t, dev )
571 __field( sector_t, sector )
572 __field( unsigned int, nr_sector )
573 __field( unsigned int, rwbs )
574 __field( pid_t, tid )
575 __array_text( char, comm, TASK_COMM_LEN )
576 ),
577
578 TP_fast_assign(
579 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,14,0))
580 tp_assign(dev, bio->bi_bdev->bd_dev)
581 tp_assign(sector, bio->bi_iter.bi_sector)
582 tp_assign(nr_sector, bio_sectors(bio))
583 blk_fill_rwbs(rwbs, bio->bi_rw, bio->bi_iter.bi_size)
584 tp_memcpy(comm, current->comm, TASK_COMM_LEN)
585 tp_assign(tid, current->pid)
586 #else /* #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,14,0)) */
587 tp_assign(dev, bio->bi_bdev->bd_dev)
588 tp_assign(sector, bio->bi_sector)
589 tp_assign(nr_sector, bio->bi_size >> 9)
590 blk_fill_rwbs(rwbs, bio->bi_rw, bio->bi_size)
591 tp_memcpy(comm, current->comm, TASK_COMM_LEN)
592 tp_assign(tid, current->pid)
593 #endif /* #else #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,14,0)) */
594 ),
595
596 TP_printk("%d,%d %s %llu + %u [%s] %d",
597 MAJOR(__entry->dev), MINOR(__entry->dev), __entry->rwbs,
598 (unsigned long long)__entry->sector,
599 __entry->nr_sector, __entry->comm, __entry->tid)
600 )
601 #else
602 LTTNG_TRACEPOINT_EVENT_CLASS(block_bio,
603
604 TP_PROTO(struct request_queue *q, struct bio *bio),
605
606 TP_ARGS(q, bio),
607
608 TP_STRUCT__entry(
609 __field( dev_t, dev )
610 __field( sector_t, sector )
611 __field( unsigned int, nr_sector )
612 __field( unsigned int, rwbs )
613 __field( pid_t, tid )
614 __array_text( char, comm, TASK_COMM_LEN )
615 ),
616
617 TP_fast_assign(
618 tp_assign(dev, bio->bi_bdev ? bio->bi_bdev->bd_dev : 0)
619 tp_assign(sector, bio->bi_sector)
620 tp_assign(nr_sector, bio->bi_size >> 9)
621 blk_fill_rwbs(rwbs, bio->bi_rw, bio->bi_size)
622 tp_memcpy(comm, current->comm, TASK_COMM_LEN)
623 tp_assign(tid, current->pid)
624 ),
625
626 TP_printk("%d,%d %s %llu + %u [%s] %d",
627 MAJOR(__entry->dev), MINOR(__entry->dev),
628 __print_rwbs_flags(__entry->rwbs),
629 (unsigned long long)__entry->sector,
630 __entry->nr_sector, __entry->comm, __entry->tid)
631 )
632
633 /**
634 * block_bio_backmerge - merging block operation to the end of an existing operation
635 * @q: queue holding operation
636 * @bio: new block operation to merge
637 *
638 * Merging block request @bio to the end of an existing block request
639 * in queue @q.
640 */
641 LTTNG_TRACEPOINT_EVENT_INSTANCE(block_bio, block_bio_backmerge,
642
643 TP_PROTO(struct request_queue *q, struct bio *bio),
644
645 TP_ARGS(q, bio)
646 )
647
648 /**
649 * block_bio_frontmerge - merging block operation to the beginning of an existing operation
650 * @q: queue holding operation
651 * @bio: new block operation to merge
652 *
653 * Merging block IO operation @bio to the beginning of an existing block
654 * operation in queue @q.
655 */
656 LTTNG_TRACEPOINT_EVENT_INSTANCE(block_bio, block_bio_frontmerge,
657
658 TP_PROTO(struct request_queue *q, struct bio *bio),
659
660 TP_ARGS(q, bio)
661 )
662
663 /**
664 * block_bio_queue - putting new block IO operation in queue
665 * @q: queue holding operation
666 * @bio: new block operation
667 *
668 * About to place the block IO operation @bio into queue @q.
669 */
670 LTTNG_TRACEPOINT_EVENT_INSTANCE(block_bio, block_bio_queue,
671
672 TP_PROTO(struct request_queue *q, struct bio *bio),
673
674 TP_ARGS(q, bio)
675 )
676 #endif
677
678 LTTNG_TRACEPOINT_EVENT_CLASS(block_get_rq,
679
680 TP_PROTO(struct request_queue *q, struct bio *bio, int rw),
681
682 TP_ARGS(q, bio, rw),
683
684 TP_STRUCT__entry(
685 __field( dev_t, dev )
686 __field( sector_t, sector )
687 __field( unsigned int, nr_sector )
688 __field( unsigned int, rwbs )
689 __field( pid_t, tid )
690 __array_text( char, comm, TASK_COMM_LEN )
691 ),
692
693 TP_fast_assign(
694 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,14,0))
695 tp_assign(dev, bio ? bio->bi_bdev->bd_dev : 0)
696 tp_assign(sector, bio ? bio->bi_iter.bi_sector : 0)
697 tp_assign(nr_sector, bio ? bio_sectors(bio) : 0)
698 blk_fill_rwbs(rwbs, bio ? bio->bi_rw : 0,
699 bio ? bio_sectors(bio) : 0)
700 tp_memcpy(comm, current->comm, TASK_COMM_LEN)
701 tp_assign(tid, current->pid)
702 #else /* #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,14,0)) */
703 tp_assign(dev, bio ? bio->bi_bdev->bd_dev : 0)
704 tp_assign(sector, bio ? bio->bi_sector : 0)
705 tp_assign(nr_sector, bio ? bio->bi_size >> 9 : 0)
706 blk_fill_rwbs(rwbs, bio ? bio->bi_rw : 0,
707 bio ? bio->bi_size >> 9 : 0)
708 tp_memcpy(comm, current->comm, TASK_COMM_LEN)
709 tp_assign(tid, current->pid)
710 #endif /* #else #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,14,0)) */
711 ),
712
713 TP_printk("%d,%d %s %llu + %u [%s] %d",
714 MAJOR(__entry->dev), MINOR(__entry->dev),
715 __print_rwbs_flags(__entry->rwbs),
716 (unsigned long long)__entry->sector,
717 __entry->nr_sector, __entry->comm, __entry->tid)
718 )
719
720 /**
721 * block_getrq - get a free request entry in queue for block IO operations
722 * @q: queue for operations
723 * @bio: pending block IO operation
724 * @rw: low bit indicates a read (%0) or a write (%1)
725 *
726 * A request struct for queue @q has been allocated to handle the
727 * block IO operation @bio.
728 */
729 LTTNG_TRACEPOINT_EVENT_INSTANCE(block_get_rq, block_getrq,
730
731 TP_PROTO(struct request_queue *q, struct bio *bio, int rw),
732
733 TP_ARGS(q, bio, rw)
734 )
735
736 /**
737 * block_sleeprq - waiting to get a free request entry in queue for block IO operation
738 * @q: queue for operation
739 * @bio: pending block IO operation
740 * @rw: low bit indicates a read (%0) or a write (%1)
741 *
742 * In the case where a request struct cannot be provided for queue @q
743 * the process needs to wait for an request struct to become
744 * available. This tracepoint event is generated each time the
745 * process goes to sleep waiting for request struct become available.
746 */
747 LTTNG_TRACEPOINT_EVENT_INSTANCE(block_get_rq, block_sleeprq,
748
749 TP_PROTO(struct request_queue *q, struct bio *bio, int rw),
750
751 TP_ARGS(q, bio, rw)
752 )
753
754 /**
755 * block_plug - keep operations requests in request queue
756 * @q: request queue to plug
757 *
758 * Plug the request queue @q. Do not allow block operation requests
759 * to be sent to the device driver. Instead, accumulate requests in
760 * the queue to improve throughput performance of the block device.
761 */
762 LTTNG_TRACEPOINT_EVENT(block_plug,
763
764 TP_PROTO(struct request_queue *q),
765
766 TP_ARGS(q),
767
768 TP_STRUCT__entry(
769 __field( pid_t, tid )
770 __array_text( char, comm, TASK_COMM_LEN )
771 ),
772
773 TP_fast_assign(
774 tp_memcpy(comm, current->comm, TASK_COMM_LEN)
775 tp_assign(tid, current->pid)
776 ),
777
778 TP_printk("[%s] %d", __entry->comm, __entry->tid)
779 )
780
781 LTTNG_TRACEPOINT_EVENT_CLASS(block_unplug,
782
783 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,39))
784 TP_PROTO(struct request_queue *q, unsigned int depth, bool explicit),
785
786 TP_ARGS(q, depth, explicit),
787 #else
788 TP_PROTO(struct request_queue *q),
789
790 TP_ARGS(q),
791 #endif
792
793 TP_STRUCT__entry(
794 __field( int, nr_rq )
795 __field( pid_t, tid )
796 __array_text( char, comm, TASK_COMM_LEN )
797 ),
798
799 TP_fast_assign(
800 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,39))
801 tp_assign(nr_rq, depth)
802 #else
803 tp_assign(nr_rq, q->rq.count[READ] + q->rq.count[WRITE])
804 #endif
805 tp_memcpy(comm, current->comm, TASK_COMM_LEN)
806 tp_assign(tid, current->pid)
807 ),
808
809 TP_printk("[%s] %d %d", __entry->comm, , __entry->tid,
810 __entry->nr_rq)
811 )
812
813 #if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,39))
814 /**
815 * block_unplug_timer - timed release of operations requests in queue to device driver
816 * @q: request queue to unplug
817 *
818 * Unplug the request queue @q because a timer expired and allow block
819 * operation requests to be sent to the device driver.
820 */
821 LTTNG_TRACEPOINT_EVENT_INSTANCE(block_unplug, block_unplug_timer,
822
823 TP_PROTO(struct request_queue *q),
824
825 TP_ARGS(q)
826 )
827 #endif
828
829 /**
830 * block_unplug - release of operations requests in request queue
831 * @q: request queue to unplug
832 * @depth: number of requests just added to the queue
833 * @explicit: whether this was an explicit unplug, or one from schedule()
834 *
835 * Unplug request queue @q because device driver is scheduled to work
836 * on elements in the request queue.
837 */
838 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,39))
839 LTTNG_TRACEPOINT_EVENT_INSTANCE(block_unplug, block_unplug,
840 #else
841 LTTNG_TRACEPOINT_EVENT_INSTANCE(block_unplug, block_unplug_io,
842 #endif
843
844 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,39))
845 TP_PROTO(struct request_queue *q, unsigned int depth, bool explicit),
846
847 TP_ARGS(q, depth, explicit)
848 #else
849 TP_PROTO(struct request_queue *q),
850
851 TP_ARGS(q)
852 #endif
853 )
854
855 /**
856 * block_split - split a single bio struct into two bio structs
857 * @q: queue containing the bio
858 * @bio: block operation being split
859 * @new_sector: The starting sector for the new bio
860 *
861 * The bio request @bio in request queue @q needs to be split into two
862 * bio requests. The newly created @bio request starts at
863 * @new_sector. This split may be required due to hardware limitation
864 * such as operation crossing device boundaries in a RAID system.
865 */
866 LTTNG_TRACEPOINT_EVENT(block_split,
867
868 TP_PROTO(struct request_queue *q, struct bio *bio,
869 unsigned int new_sector),
870
871 TP_ARGS(q, bio, new_sector),
872
873 TP_STRUCT__entry(
874 __field( dev_t, dev )
875 __field( sector_t, sector )
876 __field( sector_t, new_sector )
877 __field( unsigned int, rwbs )
878 __field( pid_t, tid )
879 __array_text( char, comm, TASK_COMM_LEN )
880 ),
881
882 TP_fast_assign(
883 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,14,0))
884 tp_assign(dev, bio->bi_bdev->bd_dev)
885 tp_assign(sector, bio->bi_iter.bi_sector)
886 tp_assign(new_sector, new_sector)
887 blk_fill_rwbs(rwbs, bio->bi_rw, bio->bi_iter.bi_size)
888 tp_memcpy(comm, current->comm, TASK_COMM_LEN)
889 tp_assign(tid, current->pid)
890 #else /* #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,14,0)) */
891 tp_assign(dev, bio->bi_bdev->bd_dev)
892 tp_assign(sector, bio->bi_sector)
893 tp_assign(new_sector, new_sector)
894 blk_fill_rwbs(rwbs, bio->bi_rw, bio->bi_size)
895 tp_memcpy(comm, current->comm, TASK_COMM_LEN)
896 tp_assign(tid, current->pid)
897 #endif /* #else #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,14,0)) */
898 ),
899
900 TP_printk("%d,%d %s %llu / %llu [%s] %d",
901 MAJOR(__entry->dev), MINOR(__entry->dev),
902 __print_rwbs_flags(__entry->rwbs),
903 (unsigned long long)__entry->sector,
904 (unsigned long long)__entry->new_sector,
905 __entry->comm, __entry->tid)
906 )
907
908 /**
909 * block_bio_remap - map request for a logical device to the raw device
910 * @q: queue holding the operation
911 * @bio: revised operation
912 * @dev: device for the operation
913 * @from: original sector for the operation
914 *
915 * An operation for a logical device has been mapped to the
916 * raw block device.
917 */
918 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,38))
919 LTTNG_TRACEPOINT_EVENT(block_bio_remap,
920 #else
921 LTTNG_TRACEPOINT_EVENT(block_remap,
922 #endif
923
924 TP_PROTO(struct request_queue *q, struct bio *bio, dev_t dev,
925 sector_t from),
926
927 TP_ARGS(q, bio, dev, from),
928
929 TP_STRUCT__entry(
930 __field( dev_t, dev )
931 __field( sector_t, sector )
932 __field( unsigned int, nr_sector )
933 __field( dev_t, old_dev )
934 __field( sector_t, old_sector )
935 __field( unsigned int, rwbs )
936 ),
937
938 TP_fast_assign(
939 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,14,0))
940 tp_assign(dev, bio->bi_bdev->bd_dev)
941 tp_assign(sector, bio->bi_iter.bi_sector)
942 tp_assign(nr_sector, bio_sectors(bio))
943 tp_assign(old_dev, dev)
944 tp_assign(old_sector, from)
945 blk_fill_rwbs(rwbs, bio->bi_rw, bio->bi_iter.bi_size)
946 #else /* #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,14,0)) */
947 tp_assign(dev, bio->bi_bdev->bd_dev)
948 tp_assign(sector, bio->bi_sector)
949 tp_assign(nr_sector, bio->bi_size >> 9)
950 tp_assign(old_dev, dev)
951 tp_assign(old_sector, from)
952 blk_fill_rwbs(rwbs, bio->bi_rw, bio->bi_size)
953 #endif /* #else #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,14,0)) */
954 ),
955
956 TP_printk("%d,%d %s %llu + %u <- (%d,%d) %llu",
957 MAJOR(__entry->dev), MINOR(__entry->dev),
958 __print_rwbs_flags(__entry->rwbs),
959 (unsigned long long)__entry->sector,
960 __entry->nr_sector,
961 MAJOR(__entry->old_dev), MINOR(__entry->old_dev),
962 (unsigned long long)__entry->old_sector)
963 )
964
965 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,32))
966 /**
967 * block_rq_remap - map request for a block operation request
968 * @q: queue holding the operation
969 * @rq: block IO operation request
970 * @dev: device for the operation
971 * @from: original sector for the operation
972 *
973 * The block operation request @rq in @q has been remapped. The block
974 * operation request @rq holds the current information and @from hold
975 * the original sector.
976 */
977 LTTNG_TRACEPOINT_EVENT(block_rq_remap,
978
979 TP_PROTO(struct request_queue *q, struct request *rq, dev_t dev,
980 sector_t from),
981
982 TP_ARGS(q, rq, dev, from),
983
984 TP_STRUCT__entry(
985 __field( dev_t, dev )
986 __field( sector_t, sector )
987 __field( unsigned int, nr_sector )
988 __field( dev_t, old_dev )
989 __field( sector_t, old_sector )
990 __field( unsigned int, rwbs )
991 ),
992
993 TP_fast_assign(
994 tp_assign(dev, disk_devt(rq->rq_disk))
995 tp_assign(sector, blk_rq_pos(rq))
996 tp_assign(nr_sector, blk_rq_sectors(rq))
997 tp_assign(old_dev, dev)
998 tp_assign(old_sector, from)
999 blk_fill_rwbs(rwbs, rq->cmd_flags, blk_rq_bytes(rq))
1000 ),
1001
1002 TP_printk("%d,%d %s %llu + %u <- (%d,%d) %llu",
1003 MAJOR(__entry->dev), MINOR(__entry->dev),
1004 __print_rwbs_flags(__entry->rwbs),
1005 (unsigned long long)__entry->sector,
1006 __entry->nr_sector,
1007 MAJOR(__entry->old_dev), MINOR(__entry->old_dev),
1008 (unsigned long long)__entry->old_sector)
1009 )
1010 #endif
1011
1012 #undef __print_rwbs_flags
1013 #undef blk_fill_rwbs
1014
1015 #endif /* LTTNG_TRACE_BLOCK_H */
1016
1017 /* This part must be outside protection */
1018 #include "../../../probes/define_trace.h"
1019
LTTng 2.0/0.x modules
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