| 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 | tp_assign(dev, bio->bi_bdev ? |
| 343 | bio->bi_bdev->bd_dev : 0) |
| 344 | tp_assign(sector, bio->bi_sector) |
| 345 | tp_assign(nr_sector, bio->bi_size >> 9) |
| 346 | blk_fill_rwbs(rwbs, bio->bi_rw, bio->bi_size) |
| 347 | tp_memcpy(comm, current->comm, TASK_COMM_LEN) |
| 348 | ), |
| 349 | |
| 350 | TP_printk("%d,%d %s %llu + %u [%s]", |
| 351 | MAJOR(__entry->dev), MINOR(__entry->dev), |
| 352 | __print_rwbs_flags(__entry->rwbs), |
| 353 | (unsigned long long)__entry->sector, |
| 354 | __entry->nr_sector, __entry->comm) |
| 355 | ) |
| 356 | |
| 357 | /** |
| 358 | * block_bio_complete - completed all work on the block operation |
| 359 | * @q: queue holding the block operation |
| 360 | * @bio: block operation completed |
| 361 | * @error: io error value |
| 362 | * |
| 363 | * This tracepoint indicates there is no further work to do on this |
| 364 | * block IO operation @bio. |
| 365 | */ |
| 366 | TRACE_EVENT(block_bio_complete, |
| 367 | |
| 368 | #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,38)) |
| 369 | TP_PROTO(struct request_queue *q, struct bio *bio, int error), |
| 370 | |
| 371 | TP_ARGS(q, bio, error), |
| 372 | #else |
| 373 | TP_PROTO(struct request_queue *q, struct bio *bio), |
| 374 | |
| 375 | TP_ARGS(q, bio), |
| 376 | #endif |
| 377 | |
| 378 | TP_STRUCT__entry( |
| 379 | __field( dev_t, dev ) |
| 380 | __field( sector_t, sector ) |
| 381 | __field( unsigned, nr_sector ) |
| 382 | __field( int, error ) |
| 383 | __field( unsigned int, rwbs ) |
| 384 | ), |
| 385 | |
| 386 | TP_fast_assign( |
| 387 | tp_assign(dev, bio->bi_bdev->bd_dev) |
| 388 | tp_assign(sector, bio->bi_sector) |
| 389 | tp_assign(nr_sector, bio->bi_size >> 9) |
| 390 | #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,38)) |
| 391 | tp_assign(error, error) |
| 392 | #else |
| 393 | tp_assign(error, 0) |
| 394 | #endif |
| 395 | blk_fill_rwbs(rwbs, bio->bi_rw, bio->bi_size) |
| 396 | ), |
| 397 | |
| 398 | TP_printk("%d,%d %s %llu + %u [%d]", |
| 399 | MAJOR(__entry->dev), MINOR(__entry->dev), |
| 400 | __print_rwbs_flags(__entry->rwbs), |
| 401 | (unsigned long long)__entry->sector, |
| 402 | __entry->nr_sector, __entry->error) |
| 403 | ) |
| 404 | |
| 405 | #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,9,0)) |
| 406 | DECLARE_EVENT_CLASS(block_bio_merge, |
| 407 | |
| 408 | TP_PROTO(struct request_queue *q, struct request *rq, struct bio *bio), |
| 409 | |
| 410 | TP_ARGS(q, rq, bio), |
| 411 | |
| 412 | TP_STRUCT__entry( |
| 413 | __field( dev_t, dev ) |
| 414 | __field( sector_t, sector ) |
| 415 | __field( unsigned int, nr_sector ) |
| 416 | __field( unsigned int, rwbs ) |
| 417 | __array_text( char, comm, TASK_COMM_LEN ) |
| 418 | ), |
| 419 | |
| 420 | TP_fast_assign( |
| 421 | tp_assign(dev, bio->bi_bdev->bd_dev) |
| 422 | tp_assign(sector, bio->bi_sector) |
| 423 | tp_assign(nr_sector, bio->bi_size >> 9) |
| 424 | blk_fill_rwbs(rwbs, bio->bi_rw, bio->bi_size) |
| 425 | tp_memcpy(comm, current->comm, TASK_COMM_LEN) |
| 426 | ), |
| 427 | |
| 428 | TP_printk("%d,%d %s %llu + %u [%s]", |
| 429 | MAJOR(__entry->dev), MINOR(__entry->dev), |
| 430 | __print_rwbs_flags(__entry->rwbs), |
| 431 | (unsigned long long)__entry->sector, |
| 432 | __entry->nr_sector, __entry->comm) |
| 433 | ) |
| 434 | |
| 435 | /** |
| 436 | * block_bio_backmerge - merging block operation to the end of an existing operation |
| 437 | * @q: queue holding operation |
| 438 | * @bio: new block operation to merge |
| 439 | * |
| 440 | * Merging block request @bio to the end of an existing block request |
| 441 | * in queue @q. |
| 442 | */ |
| 443 | DEFINE_EVENT(block_bio_merge, block_bio_backmerge, |
| 444 | |
| 445 | TP_PROTO(struct request_queue *q, struct request *rq, struct bio *bio), |
| 446 | |
| 447 | TP_ARGS(q, rq, bio) |
| 448 | ) |
| 449 | |
| 450 | /** |
| 451 | * block_bio_frontmerge - merging block operation to the beginning of an existing operation |
| 452 | * @q: queue holding operation |
| 453 | * @bio: new block operation to merge |
| 454 | * |
| 455 | * Merging block IO operation @bio to the beginning of an existing block |
| 456 | * operation in queue @q. |
| 457 | */ |
| 458 | DEFINE_EVENT(block_bio_merge, block_bio_frontmerge, |
| 459 | |
| 460 | TP_PROTO(struct request_queue *q, struct request *rq, struct bio *bio), |
| 461 | |
| 462 | TP_ARGS(q, rq, bio) |
| 463 | ) |
| 464 | |
| 465 | /** |
| 466 | * block_bio_queue - putting new block IO operation in queue |
| 467 | * @q: queue holding operation |
| 468 | * @bio: new block operation |
| 469 | * |
| 470 | * About to place the block IO operation @bio into queue @q. |
| 471 | */ |
| 472 | TRACE_EVENT(block_bio_queue, |
| 473 | |
| 474 | TP_PROTO(struct request_queue *q, struct bio *bio), |
| 475 | |
| 476 | TP_ARGS(q, bio), |
| 477 | |
| 478 | TP_STRUCT__entry( |
| 479 | __field( dev_t, dev ) |
| 480 | __field( sector_t, sector ) |
| 481 | __field( unsigned int, nr_sector ) |
| 482 | __array( char, rwbs, RWBS_LEN ) |
| 483 | __array( char, comm, TASK_COMM_LEN ) |
| 484 | ), |
| 485 | |
| 486 | TP_fast_assign( |
| 487 | tp_assign(dev, bio->bi_bdev->bd_dev) |
| 488 | tp_assign(sector, bio->bi_sector) |
| 489 | tp_assign(nr_sector, bio->bi_size >> 9) |
| 490 | blk_fill_rwbs(rwbs, bio->bi_rw, bio->bi_size) |
| 491 | tp_memcpy(comm, current->comm, TASK_COMM_LEN) |
| 492 | ), |
| 493 | |
| 494 | TP_printk("%d,%d %s %llu + %u [%s]", |
| 495 | MAJOR(__entry->dev), MINOR(__entry->dev), __entry->rwbs, |
| 496 | (unsigned long long)__entry->sector, |
| 497 | __entry->nr_sector, __entry->comm) |
| 498 | ) |
| 499 | #else |
| 500 | DECLARE_EVENT_CLASS(block_bio, |
| 501 | |
| 502 | TP_PROTO(struct request_queue *q, struct bio *bio), |
| 503 | |
| 504 | TP_ARGS(q, bio), |
| 505 | |
| 506 | TP_STRUCT__entry( |
| 507 | __field( dev_t, dev ) |
| 508 | __field( sector_t, sector ) |
| 509 | __field( unsigned int, nr_sector ) |
| 510 | __field( unsigned int, rwbs ) |
| 511 | __array_text( char, comm, TASK_COMM_LEN ) |
| 512 | ), |
| 513 | |
| 514 | TP_fast_assign( |
| 515 | tp_assign(dev, bio->bi_bdev ? bio->bi_bdev->bd_dev : 0) |
| 516 | tp_assign(sector, bio->bi_sector) |
| 517 | tp_assign(nr_sector, bio->bi_size >> 9) |
| 518 | blk_fill_rwbs(rwbs, bio->bi_rw, bio->bi_size) |
| 519 | tp_memcpy(comm, current->comm, TASK_COMM_LEN) |
| 520 | ), |
| 521 | |
| 522 | TP_printk("%d,%d %s %llu + %u [%s]", |
| 523 | MAJOR(__entry->dev), MINOR(__entry->dev), |
| 524 | __print_rwbs_flags(__entry->rwbs), |
| 525 | (unsigned long long)__entry->sector, |
| 526 | __entry->nr_sector, __entry->comm) |
| 527 | ) |
| 528 | |
| 529 | /** |
| 530 | * block_bio_backmerge - merging block operation to the end of an existing operation |
| 531 | * @q: queue holding operation |
| 532 | * @bio: new block operation to merge |
| 533 | * |
| 534 | * Merging block request @bio to the end of an existing block request |
| 535 | * in queue @q. |
| 536 | */ |
| 537 | DEFINE_EVENT(block_bio, block_bio_backmerge, |
| 538 | |
| 539 | TP_PROTO(struct request_queue *q, struct bio *bio), |
| 540 | |
| 541 | TP_ARGS(q, bio) |
| 542 | ) |
| 543 | |
| 544 | /** |
| 545 | * block_bio_frontmerge - merging block operation to the beginning of an existing operation |
| 546 | * @q: queue holding operation |
| 547 | * @bio: new block operation to merge |
| 548 | * |
| 549 | * Merging block IO operation @bio to the beginning of an existing block |
| 550 | * operation in queue @q. |
| 551 | */ |
| 552 | DEFINE_EVENT(block_bio, block_bio_frontmerge, |
| 553 | |
| 554 | TP_PROTO(struct request_queue *q, struct bio *bio), |
| 555 | |
| 556 | TP_ARGS(q, bio) |
| 557 | ) |
| 558 | |
| 559 | /** |
| 560 | * block_bio_queue - putting new block IO operation in queue |
| 561 | * @q: queue holding operation |
| 562 | * @bio: new block operation |
| 563 | * |
| 564 | * About to place the block IO operation @bio into queue @q. |
| 565 | */ |
| 566 | DEFINE_EVENT(block_bio, block_bio_queue, |
| 567 | |
| 568 | TP_PROTO(struct request_queue *q, struct bio *bio), |
| 569 | |
| 570 | TP_ARGS(q, bio) |
| 571 | ) |
| 572 | #endif |
| 573 | |
| 574 | DECLARE_EVENT_CLASS(block_get_rq, |
| 575 | |
| 576 | TP_PROTO(struct request_queue *q, struct bio *bio, int rw), |
| 577 | |
| 578 | TP_ARGS(q, bio, rw), |
| 579 | |
| 580 | TP_STRUCT__entry( |
| 581 | __field( dev_t, dev ) |
| 582 | __field( sector_t, sector ) |
| 583 | __field( unsigned int, nr_sector ) |
| 584 | __field( unsigned int, rwbs ) |
| 585 | __array_text( char, comm, TASK_COMM_LEN ) |
| 586 | ), |
| 587 | |
| 588 | TP_fast_assign( |
| 589 | tp_assign(dev, bio ? bio->bi_bdev->bd_dev : 0) |
| 590 | tp_assign(sector, bio ? bio->bi_sector : 0) |
| 591 | tp_assign(nr_sector, bio ? bio->bi_size >> 9 : 0) |
| 592 | blk_fill_rwbs(rwbs, bio ? bio->bi_rw : 0, |
| 593 | bio ? bio->bi_size >> 9 : 0) |
| 594 | tp_memcpy(comm, current->comm, TASK_COMM_LEN) |
| 595 | ), |
| 596 | |
| 597 | TP_printk("%d,%d %s %llu + %u [%s]", |
| 598 | MAJOR(__entry->dev), MINOR(__entry->dev), |
| 599 | __print_rwbs_flags(__entry->rwbs), |
| 600 | (unsigned long long)__entry->sector, |
| 601 | __entry->nr_sector, __entry->comm) |
| 602 | ) |
| 603 | |
| 604 | /** |
| 605 | * block_getrq - get a free request entry in queue for block IO operations |
| 606 | * @q: queue for operations |
| 607 | * @bio: pending block IO operation |
| 608 | * @rw: low bit indicates a read (%0) or a write (%1) |
| 609 | * |
| 610 | * A request struct for queue @q has been allocated to handle the |
| 611 | * block IO operation @bio. |
| 612 | */ |
| 613 | DEFINE_EVENT(block_get_rq, block_getrq, |
| 614 | |
| 615 | TP_PROTO(struct request_queue *q, struct bio *bio, int rw), |
| 616 | |
| 617 | TP_ARGS(q, bio, rw) |
| 618 | ) |
| 619 | |
| 620 | /** |
| 621 | * block_sleeprq - waiting to get a free request entry in queue for block IO operation |
| 622 | * @q: queue for operation |
| 623 | * @bio: pending block IO operation |
| 624 | * @rw: low bit indicates a read (%0) or a write (%1) |
| 625 | * |
| 626 | * In the case where a request struct cannot be provided for queue @q |
| 627 | * the process needs to wait for an request struct to become |
| 628 | * available. This tracepoint event is generated each time the |
| 629 | * process goes to sleep waiting for request struct become available. |
| 630 | */ |
| 631 | DEFINE_EVENT(block_get_rq, block_sleeprq, |
| 632 | |
| 633 | TP_PROTO(struct request_queue *q, struct bio *bio, int rw), |
| 634 | |
| 635 | TP_ARGS(q, bio, rw) |
| 636 | ) |
| 637 | |
| 638 | /** |
| 639 | * block_plug - keep operations requests in request queue |
| 640 | * @q: request queue to plug |
| 641 | * |
| 642 | * Plug the request queue @q. Do not allow block operation requests |
| 643 | * to be sent to the device driver. Instead, accumulate requests in |
| 644 | * the queue to improve throughput performance of the block device. |
| 645 | */ |
| 646 | TRACE_EVENT(block_plug, |
| 647 | |
| 648 | TP_PROTO(struct request_queue *q), |
| 649 | |
| 650 | TP_ARGS(q), |
| 651 | |
| 652 | TP_STRUCT__entry( |
| 653 | __array_text( char, comm, TASK_COMM_LEN ) |
| 654 | ), |
| 655 | |
| 656 | TP_fast_assign( |
| 657 | tp_memcpy(comm, current->comm, TASK_COMM_LEN) |
| 658 | ), |
| 659 | |
| 660 | TP_printk("[%s]", __entry->comm) |
| 661 | ) |
| 662 | |
| 663 | DECLARE_EVENT_CLASS(block_unplug, |
| 664 | |
| 665 | #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,39)) |
| 666 | TP_PROTO(struct request_queue *q, unsigned int depth, bool explicit), |
| 667 | |
| 668 | TP_ARGS(q, depth, explicit), |
| 669 | #else |
| 670 | TP_PROTO(struct request_queue *q), |
| 671 | |
| 672 | TP_ARGS(q), |
| 673 | #endif |
| 674 | |
| 675 | TP_STRUCT__entry( |
| 676 | __field( int, nr_rq ) |
| 677 | __array_text( char, comm, TASK_COMM_LEN ) |
| 678 | ), |
| 679 | |
| 680 | TP_fast_assign( |
| 681 | #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,39)) |
| 682 | tp_assign(nr_rq, depth) |
| 683 | #else |
| 684 | tp_assign(nr_rq, q->rq.count[READ] + q->rq.count[WRITE]) |
| 685 | #endif |
| 686 | tp_memcpy(comm, current->comm, TASK_COMM_LEN) |
| 687 | ), |
| 688 | |
| 689 | TP_printk("[%s] %d", __entry->comm, __entry->nr_rq) |
| 690 | ) |
| 691 | |
| 692 | #if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,39)) |
| 693 | /** |
| 694 | * block_unplug_timer - timed release of operations requests in queue to device driver |
| 695 | * @q: request queue to unplug |
| 696 | * |
| 697 | * Unplug the request queue @q because a timer expired and allow block |
| 698 | * operation requests to be sent to the device driver. |
| 699 | */ |
| 700 | DEFINE_EVENT(block_unplug, block_unplug_timer, |
| 701 | |
| 702 | TP_PROTO(struct request_queue *q), |
| 703 | |
| 704 | TP_ARGS(q) |
| 705 | ) |
| 706 | #endif |
| 707 | |
| 708 | /** |
| 709 | * block_unplug - release of operations requests in request queue |
| 710 | * @q: request queue to unplug |
| 711 | * @depth: number of requests just added to the queue |
| 712 | * @explicit: whether this was an explicit unplug, or one from schedule() |
| 713 | * |
| 714 | * Unplug request queue @q because device driver is scheduled to work |
| 715 | * on elements in the request queue. |
| 716 | */ |
| 717 | #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,39)) |
| 718 | DEFINE_EVENT(block_unplug, block_unplug, |
| 719 | #else |
| 720 | DEFINE_EVENT(block_unplug, block_unplug_io, |
| 721 | #endif |
| 722 | |
| 723 | #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,39)) |
| 724 | TP_PROTO(struct request_queue *q, unsigned int depth, bool explicit), |
| 725 | |
| 726 | TP_ARGS(q, depth, explicit) |
| 727 | #else |
| 728 | TP_PROTO(struct request_queue *q), |
| 729 | |
| 730 | TP_ARGS(q) |
| 731 | #endif |
| 732 | ) |
| 733 | |
| 734 | /** |
| 735 | * block_split - split a single bio struct into two bio structs |
| 736 | * @q: queue containing the bio |
| 737 | * @bio: block operation being split |
| 738 | * @new_sector: The starting sector for the new bio |
| 739 | * |
| 740 | * The bio request @bio in request queue @q needs to be split into two |
| 741 | * bio requests. The newly created @bio request starts at |
| 742 | * @new_sector. This split may be required due to hardware limitation |
| 743 | * such as operation crossing device boundaries in a RAID system. |
| 744 | */ |
| 745 | TRACE_EVENT(block_split, |
| 746 | |
| 747 | TP_PROTO(struct request_queue *q, struct bio *bio, |
| 748 | unsigned int new_sector), |
| 749 | |
| 750 | TP_ARGS(q, bio, new_sector), |
| 751 | |
| 752 | TP_STRUCT__entry( |
| 753 | __field( dev_t, dev ) |
| 754 | __field( sector_t, sector ) |
| 755 | __field( sector_t, new_sector ) |
| 756 | __field( unsigned int, rwbs ) |
| 757 | __array_text( char, comm, TASK_COMM_LEN ) |
| 758 | ), |
| 759 | |
| 760 | TP_fast_assign( |
| 761 | tp_assign(dev, bio->bi_bdev->bd_dev) |
| 762 | tp_assign(sector, bio->bi_sector) |
| 763 | tp_assign(new_sector, new_sector) |
| 764 | blk_fill_rwbs(rwbs, bio->bi_rw, bio->bi_size) |
| 765 | tp_memcpy(comm, current->comm, TASK_COMM_LEN) |
| 766 | ), |
| 767 | |
| 768 | TP_printk("%d,%d %s %llu / %llu [%s]", |
| 769 | MAJOR(__entry->dev), MINOR(__entry->dev), |
| 770 | __print_rwbs_flags(__entry->rwbs), |
| 771 | (unsigned long long)__entry->sector, |
| 772 | (unsigned long long)__entry->new_sector, |
| 773 | __entry->comm) |
| 774 | ) |
| 775 | |
| 776 | /** |
| 777 | * block_bio_remap - map request for a logical device to the raw device |
| 778 | * @q: queue holding the operation |
| 779 | * @bio: revised operation |
| 780 | * @dev: device for the operation |
| 781 | * @from: original sector for the operation |
| 782 | * |
| 783 | * An operation for a logical device has been mapped to the |
| 784 | * raw block device. |
| 785 | */ |
| 786 | #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,38)) |
| 787 | TRACE_EVENT(block_bio_remap, |
| 788 | #else |
| 789 | TRACE_EVENT(block_remap, |
| 790 | #endif |
| 791 | |
| 792 | TP_PROTO(struct request_queue *q, struct bio *bio, dev_t dev, |
| 793 | sector_t from), |
| 794 | |
| 795 | TP_ARGS(q, bio, dev, from), |
| 796 | |
| 797 | TP_STRUCT__entry( |
| 798 | __field( dev_t, dev ) |
| 799 | __field( sector_t, sector ) |
| 800 | __field( unsigned int, nr_sector ) |
| 801 | __field( dev_t, old_dev ) |
| 802 | __field( sector_t, old_sector ) |
| 803 | __field( unsigned int, rwbs ) |
| 804 | ), |
| 805 | |
| 806 | TP_fast_assign( |
| 807 | tp_assign(dev, bio->bi_bdev->bd_dev) |
| 808 | tp_assign(sector, bio->bi_sector) |
| 809 | tp_assign(nr_sector, bio->bi_size >> 9) |
| 810 | tp_assign(old_dev, dev) |
| 811 | tp_assign(old_sector, from) |
| 812 | blk_fill_rwbs(rwbs, bio->bi_rw, bio->bi_size) |
| 813 | ), |
| 814 | |
| 815 | TP_printk("%d,%d %s %llu + %u <- (%d,%d) %llu", |
| 816 | MAJOR(__entry->dev), MINOR(__entry->dev), |
| 817 | __print_rwbs_flags(__entry->rwbs), |
| 818 | (unsigned long long)__entry->sector, |
| 819 | __entry->nr_sector, |
| 820 | MAJOR(__entry->old_dev), MINOR(__entry->old_dev), |
| 821 | (unsigned long long)__entry->old_sector) |
| 822 | ) |
| 823 | |
| 824 | #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,32)) |
| 825 | /** |
| 826 | * block_rq_remap - map request for a block operation request |
| 827 | * @q: queue holding the operation |
| 828 | * @rq: block IO operation request |
| 829 | * @dev: device for the operation |
| 830 | * @from: original sector for the operation |
| 831 | * |
| 832 | * The block operation request @rq in @q has been remapped. The block |
| 833 | * operation request @rq holds the current information and @from hold |
| 834 | * the original sector. |
| 835 | */ |
| 836 | TRACE_EVENT(block_rq_remap, |
| 837 | |
| 838 | TP_PROTO(struct request_queue *q, struct request *rq, dev_t dev, |
| 839 | sector_t from), |
| 840 | |
| 841 | TP_ARGS(q, rq, dev, from), |
| 842 | |
| 843 | TP_STRUCT__entry( |
| 844 | __field( dev_t, dev ) |
| 845 | __field( sector_t, sector ) |
| 846 | __field( unsigned int, nr_sector ) |
| 847 | __field( dev_t, old_dev ) |
| 848 | __field( sector_t, old_sector ) |
| 849 | __field( unsigned int, rwbs ) |
| 850 | ), |
| 851 | |
| 852 | TP_fast_assign( |
| 853 | tp_assign(dev, disk_devt(rq->rq_disk)) |
| 854 | tp_assign(sector, blk_rq_pos(rq)) |
| 855 | tp_assign(nr_sector, blk_rq_sectors(rq)) |
| 856 | tp_assign(old_dev, dev) |
| 857 | tp_assign(old_sector, from) |
| 858 | blk_fill_rwbs(rwbs, rq->cmd_flags, blk_rq_bytes(rq)) |
| 859 | ), |
| 860 | |
| 861 | TP_printk("%d,%d %s %llu + %u <- (%d,%d) %llu", |
| 862 | MAJOR(__entry->dev), MINOR(__entry->dev), |
| 863 | __print_rwbs_flags(__entry->rwbs), |
| 864 | (unsigned long long)__entry->sector, |
| 865 | __entry->nr_sector, |
| 866 | MAJOR(__entry->old_dev), MINOR(__entry->old_dev), |
| 867 | (unsigned long long)__entry->old_sector) |
| 868 | ) |
| 869 | #endif |
| 870 | |
| 871 | #undef __print_rwbs_flags |
| 872 | #undef blk_fill_rwbs |
| 873 | |
| 874 | #endif /* _TRACE_BLOCK_H */ |
| 875 | |
| 876 | /* This part must be outside protection */ |
| 877 | #include "../../../probes/define_trace.h" |
| 878 | |