1 /* SPDX-License-Identifier: GPL-2.0 */ 2 #undef TRACE_SYSTEM 3 #define TRACE_SYSTEM io_uring 4 5 #if !defined(_TRACE_IO_URING_H) || defined(TRACE_HEADER_MULTI_READ) 6 #define _TRACE_IO_URING_H 7 8 #include <linux/tracepoint.h> 9 #include <uapi/linux/io_uring.h> 10 #include <linux/io_uring_types.h> 11 #include <linux/io_uring.h> 12 13 struct io_wq_work; 14 15 /** 16 * io_uring_create - called after a new io_uring context was prepared 17 * 18 * @fd: corresponding file descriptor 19 * @ctx: pointer to a ring context structure 20 * @sq_entries: actual SQ size 21 * @cq_entries: actual CQ size 22 * @flags: SQ ring flags, provided to io_uring_setup(2) 23 * 24 * Allows to trace io_uring creation and provide pointer to a context, that can 25 * be used later to find correlated events. 26 */ 27 TRACE_EVENT(io_uring_create, 28 29 TP_PROTO(int fd, void *ctx, u32 sq_entries, u32 cq_entries, u32 flags), 30 31 TP_ARGS(fd, ctx, sq_entries, cq_entries, flags), 32 33 TP_STRUCT__entry ( 34 __field( int, fd ) 35 __field( void *, ctx ) 36 __field( u32, sq_entries ) 37 __field( u32, cq_entries ) 38 __field( u32, flags ) 39 ), 40 41 TP_fast_assign( 42 __entry->fd = fd; 43 __entry->ctx = ctx; 44 __entry->sq_entries = sq_entries; 45 __entry->cq_entries = cq_entries; 46 __entry->flags = flags; 47 ), 48 49 TP_printk("ring %p, fd %d sq size %d, cq size %d, flags 0x%x", 50 __entry->ctx, __entry->fd, __entry->sq_entries, 51 __entry->cq_entries, __entry->flags) 52 ); 53 54 /** 55 * io_uring_register - called after a buffer/file/eventfd was successfully 56 * registered for a ring 57 * 58 * @ctx: pointer to a ring context structure 59 * @opcode: describes which operation to perform 60 * @nr_user_files: number of registered files 61 * @nr_user_bufs: number of registered buffers 62 * @ret: return code 63 * 64 * Allows to trace fixed files/buffers, that could be registered to 65 * avoid an overhead of getting references to them for every operation. This 66 * event, together with io_uring_file_get, can provide a full picture of how 67 * much overhead one can reduce via fixing. 68 */ 69 TRACE_EVENT(io_uring_register, 70 71 TP_PROTO(void *ctx, unsigned opcode, unsigned nr_files, 72 unsigned nr_bufs, long ret), 73 74 TP_ARGS(ctx, opcode, nr_files, nr_bufs, ret), 75 76 TP_STRUCT__entry ( 77 __field( void *, ctx ) 78 __field( unsigned, opcode ) 79 __field( unsigned, nr_files) 80 __field( unsigned, nr_bufs ) 81 __field( long, ret ) 82 ), 83 84 TP_fast_assign( 85 __entry->ctx = ctx; 86 __entry->opcode = opcode; 87 __entry->nr_files = nr_files; 88 __entry->nr_bufs = nr_bufs; 89 __entry->ret = ret; 90 ), 91 92 TP_printk("ring %p, opcode %d, nr_user_files %d, nr_user_bufs %d, " 93 "ret %ld", 94 __entry->ctx, __entry->opcode, __entry->nr_files, 95 __entry->nr_bufs, __entry->ret) 96 ); 97 98 /** 99 * io_uring_file_get - called before getting references to an SQE file 100 * 101 * @req: pointer to a submitted request 102 * @fd: SQE file descriptor 103 * 104 * Allows to trace out how often an SQE file reference is obtained, which can 105 * help figuring out if it makes sense to use fixed files, or check that fixed 106 * files are used correctly. 107 */ 108 TRACE_EVENT(io_uring_file_get, 109 110 TP_PROTO(struct io_kiocb *req, int fd), 111 112 TP_ARGS(req, fd), 113 114 TP_STRUCT__entry ( 115 __field( void *, ctx ) 116 __field( void *, req ) 117 __field( u64, user_data ) 118 __field( int, fd ) 119 ), 120 121 TP_fast_assign( 122 __entry->ctx = req->ctx; 123 __entry->req = req; 124 __entry->user_data = req->cqe.user_data; 125 __entry->fd = fd; 126 ), 127 128 TP_printk("ring %p, req %p, user_data 0x%llx, fd %d", 129 __entry->ctx, __entry->req, __entry->user_data, __entry->fd) 130 ); 131 132 /** 133 * io_uring_queue_async_work - called before submitting a new async work 134 * 135 * @req: pointer to a submitted request 136 * @rw: type of workqueue, hashed or normal 137 * 138 * Allows to trace asynchronous work submission. 139 */ 140 TRACE_EVENT(io_uring_queue_async_work, 141 142 TP_PROTO(struct io_kiocb *req, int rw), 143 144 TP_ARGS(req, rw), 145 146 TP_STRUCT__entry ( 147 __field( void *, ctx ) 148 __field( void *, req ) 149 __field( u64, user_data ) 150 __field( u8, opcode ) 151 __field( unsigned int, flags ) 152 __field( struct io_wq_work *, work ) 153 __field( int, rw ) 154 155 __string( op_str, io_uring_get_opcode(req->opcode) ) 156 ), 157 158 TP_fast_assign( 159 __entry->ctx = req->ctx; 160 __entry->req = req; 161 __entry->user_data = req->cqe.user_data; 162 __entry->flags = req->flags; 163 __entry->opcode = req->opcode; 164 __entry->work = &req->work; 165 __entry->rw = rw; 166 167 __assign_str(op_str, io_uring_get_opcode(req->opcode)); 168 ), 169 170 TP_printk("ring %p, request %p, user_data 0x%llx, opcode %s, flags 0x%x, %s queue, work %p", 171 __entry->ctx, __entry->req, __entry->user_data, 172 __get_str(op_str), 173 __entry->flags, __entry->rw ? "hashed" : "normal", __entry->work) 174 ); 175 176 /** 177 * io_uring_defer - called when an io_uring request is deferred 178 * 179 * @req: pointer to a deferred request 180 * 181 * Allows to track deferred requests, to get an insight about what requests are 182 * not started immediately. 183 */ 184 TRACE_EVENT(io_uring_defer, 185 186 TP_PROTO(struct io_kiocb *req), 187 188 TP_ARGS(req), 189 190 TP_STRUCT__entry ( 191 __field( void *, ctx ) 192 __field( void *, req ) 193 __field( unsigned long long, data ) 194 __field( u8, opcode ) 195 196 __string( op_str, io_uring_get_opcode(req->opcode) ) 197 ), 198 199 TP_fast_assign( 200 __entry->ctx = req->ctx; 201 __entry->req = req; 202 __entry->data = req->cqe.user_data; 203 __entry->opcode = req->opcode; 204 205 __assign_str(op_str, io_uring_get_opcode(req->opcode)); 206 ), 207 208 TP_printk("ring %p, request %p, user_data 0x%llx, opcode %s", 209 __entry->ctx, __entry->req, __entry->data, 210 __get_str(op_str)) 211 ); 212 213 /** 214 * io_uring_link - called before the io_uring request added into link_list of 215 * another request 216 * 217 * @req: pointer to a linked request 218 * @target_req: pointer to a previous request, that would contain @req 219 * 220 * Allows to track linked requests, to understand dependencies between requests 221 * and how does it influence their execution flow. 222 */ 223 TRACE_EVENT(io_uring_link, 224 225 TP_PROTO(struct io_kiocb *req, struct io_kiocb *target_req), 226 227 TP_ARGS(req, target_req), 228 229 TP_STRUCT__entry ( 230 __field( void *, ctx ) 231 __field( void *, req ) 232 __field( void *, target_req ) 233 ), 234 235 TP_fast_assign( 236 __entry->ctx = req->ctx; 237 __entry->req = req; 238 __entry->target_req = target_req; 239 ), 240 241 TP_printk("ring %p, request %p linked after %p", 242 __entry->ctx, __entry->req, __entry->target_req) 243 ); 244 245 /** 246 * io_uring_cqring_wait - called before start waiting for an available CQE 247 * 248 * @ctx: pointer to a ring context structure 249 * @min_events: minimal number of events to wait for 250 * 251 * Allows to track waiting for CQE, so that we can e.g. troubleshoot 252 * situations, when an application wants to wait for an event, that never 253 * comes. 254 */ 255 TRACE_EVENT(io_uring_cqring_wait, 256 257 TP_PROTO(void *ctx, int min_events), 258 259 TP_ARGS(ctx, min_events), 260 261 TP_STRUCT__entry ( 262 __field( void *, ctx ) 263 __field( int, min_events ) 264 ), 265 266 TP_fast_assign( 267 __entry->ctx = ctx; 268 __entry->min_events = min_events; 269 ), 270 271 TP_printk("ring %p, min_events %d", __entry->ctx, __entry->min_events) 272 ); 273 274 /** 275 * io_uring_fail_link - called before failing a linked request 276 * 277 * @req: request, which links were cancelled 278 * @link: cancelled link 279 * 280 * Allows to track linked requests cancellation, to see not only that some work 281 * was cancelled, but also which request was the reason. 282 */ 283 TRACE_EVENT(io_uring_fail_link, 284 285 TP_PROTO(struct io_kiocb *req, struct io_kiocb *link), 286 287 TP_ARGS(req, link), 288 289 TP_STRUCT__entry ( 290 __field( void *, ctx ) 291 __field( void *, req ) 292 __field( unsigned long long, user_data ) 293 __field( u8, opcode ) 294 __field( void *, link ) 295 296 __string( op_str, io_uring_get_opcode(req->opcode) ) 297 ), 298 299 TP_fast_assign( 300 __entry->ctx = req->ctx; 301 __entry->req = req; 302 __entry->user_data = req->cqe.user_data; 303 __entry->opcode = req->opcode; 304 __entry->link = link; 305 306 __assign_str(op_str, io_uring_get_opcode(req->opcode)); 307 ), 308 309 TP_printk("ring %p, request %p, user_data 0x%llx, opcode %s, link %p", 310 __entry->ctx, __entry->req, __entry->user_data, 311 __get_str(op_str), __entry->link) 312 ); 313 314 /** 315 * io_uring_complete - called when completing an SQE 316 * 317 * @ctx: pointer to a ring context structure 318 * @req: pointer to a submitted request 319 * @user_data: user data associated with the request 320 * @res: result of the request 321 * @cflags: completion flags 322 * @extra1: extra 64-bit data for CQE32 323 * @extra2: extra 64-bit data for CQE32 324 * 325 */ 326 TRACE_EVENT(io_uring_complete, 327 328 TP_PROTO(void *ctx, void *req, u64 user_data, int res, unsigned cflags, 329 u64 extra1, u64 extra2), 330 331 TP_ARGS(ctx, req, user_data, res, cflags, extra1, extra2), 332 333 TP_STRUCT__entry ( 334 __field( void *, ctx ) 335 __field( void *, req ) 336 __field( u64, user_data ) 337 __field( int, res ) 338 __field( unsigned, cflags ) 339 __field( u64, extra1 ) 340 __field( u64, extra2 ) 341 ), 342 343 TP_fast_assign( 344 __entry->ctx = ctx; 345 __entry->req = req; 346 __entry->user_data = user_data; 347 __entry->res = res; 348 __entry->cflags = cflags; 349 __entry->extra1 = extra1; 350 __entry->extra2 = extra2; 351 ), 352 353 TP_printk("ring %p, req %p, user_data 0x%llx, result %d, cflags 0x%x " 354 "extra1 %llu extra2 %llu ", 355 __entry->ctx, __entry->req, 356 __entry->user_data, 357 __entry->res, __entry->cflags, 358 (unsigned long long) __entry->extra1, 359 (unsigned long long) __entry->extra2) 360 ); 361 362 /** 363 * io_uring_submit_sqe - called before submitting one SQE 364 * 365 * @req: pointer to a submitted request 366 * @force_nonblock: whether a context blocking or not 367 * 368 * Allows to track SQE submitting, to understand what was the source of it, SQ 369 * thread or io_uring_enter call. 370 */ 371 TRACE_EVENT(io_uring_submit_sqe, 372 373 TP_PROTO(struct io_kiocb *req, bool force_nonblock), 374 375 TP_ARGS(req, force_nonblock), 376 377 TP_STRUCT__entry ( 378 __field( void *, ctx ) 379 __field( void *, req ) 380 __field( unsigned long long, user_data ) 381 __field( u8, opcode ) 382 __field( u32, flags ) 383 __field( bool, force_nonblock ) 384 __field( bool, sq_thread ) 385 386 __string( op_str, io_uring_get_opcode(req->opcode) ) 387 ), 388 389 TP_fast_assign( 390 __entry->ctx = req->ctx; 391 __entry->req = req; 392 __entry->user_data = req->cqe.user_data; 393 __entry->opcode = req->opcode; 394 __entry->flags = req->flags; 395 __entry->force_nonblock = force_nonblock; 396 __entry->sq_thread = req->ctx->flags & IORING_SETUP_SQPOLL; 397 398 __assign_str(op_str, io_uring_get_opcode(req->opcode)); 399 ), 400 401 TP_printk("ring %p, req %p, user_data 0x%llx, opcode %s, flags 0x%x, " 402 "non block %d, sq_thread %d", __entry->ctx, __entry->req, 403 __entry->user_data, __get_str(op_str), 404 __entry->flags, __entry->force_nonblock, __entry->sq_thread) 405 ); 406 407 /* 408 * io_uring_poll_arm - called after arming a poll wait if successful 409 * 410 * @req: pointer to the armed request 411 * @mask: request poll events mask 412 * @events: registered events of interest 413 * 414 * Allows to track which fds are waiting for and what are the events of 415 * interest. 416 */ 417 TRACE_EVENT(io_uring_poll_arm, 418 419 TP_PROTO(struct io_kiocb *req, int mask, int events), 420 421 TP_ARGS(req, mask, events), 422 423 TP_STRUCT__entry ( 424 __field( void *, ctx ) 425 __field( void *, req ) 426 __field( unsigned long long, user_data ) 427 __field( u8, opcode ) 428 __field( int, mask ) 429 __field( int, events ) 430 431 __string( op_str, io_uring_get_opcode(req->opcode) ) 432 ), 433 434 TP_fast_assign( 435 __entry->ctx = req->ctx; 436 __entry->req = req; 437 __entry->user_data = req->cqe.user_data; 438 __entry->opcode = req->opcode; 439 __entry->mask = mask; 440 __entry->events = events; 441 442 __assign_str(op_str, io_uring_get_opcode(req->opcode)); 443 ), 444 445 TP_printk("ring %p, req %p, user_data 0x%llx, opcode %s, mask 0x%x, events 0x%x", 446 __entry->ctx, __entry->req, __entry->user_data, 447 __get_str(op_str), 448 __entry->mask, __entry->events) 449 ); 450 451 /* 452 * io_uring_task_add - called after adding a task 453 * 454 * @req: pointer to request 455 * @mask: request poll events mask 456 * 457 */ 458 TRACE_EVENT(io_uring_task_add, 459 460 TP_PROTO(struct io_kiocb *req, int mask), 461 462 TP_ARGS(req, mask), 463 464 TP_STRUCT__entry ( 465 __field( void *, ctx ) 466 __field( void *, req ) 467 __field( unsigned long long, user_data ) 468 __field( u8, opcode ) 469 __field( int, mask ) 470 471 __string( op_str, io_uring_get_opcode(req->opcode) ) 472 ), 473 474 TP_fast_assign( 475 __entry->ctx = req->ctx; 476 __entry->req = req; 477 __entry->user_data = req->cqe.user_data; 478 __entry->opcode = req->opcode; 479 __entry->mask = mask; 480 481 __assign_str(op_str, io_uring_get_opcode(req->opcode)); 482 ), 483 484 TP_printk("ring %p, req %p, user_data 0x%llx, opcode %s, mask %x", 485 __entry->ctx, __entry->req, __entry->user_data, 486 __get_str(op_str), 487 __entry->mask) 488 ); 489 490 /* 491 * io_uring_req_failed - called when an sqe is errored dring submission 492 * 493 * @sqe: pointer to the io_uring_sqe that failed 494 * @req: pointer to request 495 * @error: error it failed with 496 * 497 * Allows easier diagnosing of malformed requests in production systems. 498 */ 499 TRACE_EVENT(io_uring_req_failed, 500 501 TP_PROTO(const struct io_uring_sqe *sqe, struct io_kiocb *req, int error), 502 503 TP_ARGS(sqe, req, error), 504 505 TP_STRUCT__entry ( 506 __field( void *, ctx ) 507 __field( void *, req ) 508 __field( unsigned long long, user_data ) 509 __field( u8, opcode ) 510 __field( u8, flags ) 511 __field( u8, ioprio ) 512 __field( u64, off ) 513 __field( u64, addr ) 514 __field( u32, len ) 515 __field( u32, op_flags ) 516 __field( u16, buf_index ) 517 __field( u16, personality ) 518 __field( u32, file_index ) 519 __field( u64, pad1 ) 520 __field( u64, addr3 ) 521 __field( int, error ) 522 523 __string( op_str, io_uring_get_opcode(sqe->opcode) ) 524 ), 525 526 TP_fast_assign( 527 __entry->ctx = req->ctx; 528 __entry->req = req; 529 __entry->user_data = sqe->user_data; 530 __entry->opcode = sqe->opcode; 531 __entry->flags = sqe->flags; 532 __entry->ioprio = sqe->ioprio; 533 __entry->off = sqe->off; 534 __entry->addr = sqe->addr; 535 __entry->len = sqe->len; 536 __entry->op_flags = sqe->poll32_events; 537 __entry->buf_index = sqe->buf_index; 538 __entry->personality = sqe->personality; 539 __entry->file_index = sqe->file_index; 540 __entry->pad1 = sqe->__pad2[0]; 541 __entry->addr3 = sqe->addr3; 542 __entry->error = error; 543 544 __assign_str(op_str, io_uring_get_opcode(sqe->opcode)); 545 ), 546 547 TP_printk("ring %p, req %p, user_data 0x%llx, " 548 "opcode %s, flags 0x%x, prio=%d, off=%llu, addr=%llu, " 549 "len=%u, rw_flags=0x%x, buf_index=%d, " 550 "personality=%d, file_index=%d, pad=0x%llx, addr3=%llx, " 551 "error=%d", 552 __entry->ctx, __entry->req, __entry->user_data, 553 __get_str(op_str), 554 __entry->flags, __entry->ioprio, 555 (unsigned long long)__entry->off, 556 (unsigned long long) __entry->addr, __entry->len, 557 __entry->op_flags, 558 __entry->buf_index, __entry->personality, __entry->file_index, 559 (unsigned long long) __entry->pad1, 560 (unsigned long long) __entry->addr3, __entry->error) 561 ); 562 563 564 /* 565 * io_uring_cqe_overflow - a CQE overflowed 566 * 567 * @ctx: pointer to a ring context structure 568 * @user_data: user data associated with the request 569 * @res: CQE result 570 * @cflags: CQE flags 571 * @ocqe: pointer to the overflow cqe (if available) 572 * 573 */ 574 TRACE_EVENT(io_uring_cqe_overflow, 575 576 TP_PROTO(void *ctx, unsigned long long user_data, s32 res, u32 cflags, 577 void *ocqe), 578 579 TP_ARGS(ctx, user_data, res, cflags, ocqe), 580 581 TP_STRUCT__entry ( 582 __field( void *, ctx ) 583 __field( unsigned long long, user_data ) 584 __field( s32, res ) 585 __field( u32, cflags ) 586 __field( void *, ocqe ) 587 ), 588 589 TP_fast_assign( 590 __entry->ctx = ctx; 591 __entry->user_data = user_data; 592 __entry->res = res; 593 __entry->cflags = cflags; 594 __entry->ocqe = ocqe; 595 ), 596 597 TP_printk("ring %p, user_data 0x%llx, res %d, cflags 0x%x, " 598 "overflow_cqe %p", 599 __entry->ctx, __entry->user_data, __entry->res, 600 __entry->cflags, __entry->ocqe) 601 ); 602 603 /* 604 * io_uring_task_work_run - ran task work 605 * 606 * @tctx: pointer to a io_uring_task 607 * @count: how many functions it ran 608 * @loops: how many loops it ran 609 * 610 */ 611 TRACE_EVENT(io_uring_task_work_run, 612 613 TP_PROTO(void *tctx, unsigned int count, unsigned int loops), 614 615 TP_ARGS(tctx, count, loops), 616 617 TP_STRUCT__entry ( 618 __field( void *, tctx ) 619 __field( unsigned int, count ) 620 __field( unsigned int, loops ) 621 ), 622 623 TP_fast_assign( 624 __entry->tctx = tctx; 625 __entry->count = count; 626 __entry->loops = loops; 627 ), 628 629 TP_printk("tctx %p, count %u, loops %u", 630 __entry->tctx, __entry->count, __entry->loops) 631 ); 632 633 TRACE_EVENT(io_uring_short_write, 634 635 TP_PROTO(void *ctx, u64 fpos, u64 wanted, u64 got), 636 637 TP_ARGS(ctx, fpos, wanted, got), 638 639 TP_STRUCT__entry( 640 __field(void *, ctx) 641 __field(u64, fpos) 642 __field(u64, wanted) 643 __field(u64, got) 644 ), 645 646 TP_fast_assign( 647 __entry->ctx = ctx; 648 __entry->fpos = fpos; 649 __entry->wanted = wanted; 650 __entry->got = got; 651 ), 652 653 TP_printk("ring %p, fpos %lld, wanted %lld, got %lld", 654 __entry->ctx, __entry->fpos, 655 __entry->wanted, __entry->got) 656 ); 657 658 #endif /* _TRACE_IO_URING_H */ 659 660 /* This part must be outside protection */ 661 #include <trace/define_trace.h> 662