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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 | /* SPDX-License-Identifier: GPL-2.0 */ /* * Stage 1 of the trace events. * * Override the macros in <trace/trace_events.h> to include the following: * * struct trace_event_raw_<call> { * struct trace_entry ent; * <type> <item>; * <type2> <item2>[<len>]; * [...] * }; * * The <type> <item> is created by the __field(type, item) macro or * the __array(type2, item2, len) macro. * We simply do "type item;", and that will create the fields * in the structure. */ #include <linux/trace_events.h> #ifndef TRACE_SYSTEM_VAR #define TRACE_SYSTEM_VAR TRACE_SYSTEM #endif #define __app__(x, y) str__##x##y #define __app(x, y) __app__(x, y) #define TRACE_SYSTEM_STRING __app(TRACE_SYSTEM_VAR,__trace_system_name) #define TRACE_MAKE_SYSTEM_STR() \ static const char TRACE_SYSTEM_STRING[] = \ __stringify(TRACE_SYSTEM) TRACE_MAKE_SYSTEM_STR(); #undef TRACE_DEFINE_ENUM #define TRACE_DEFINE_ENUM(a) \ static struct trace_eval_map __used __initdata \ __##TRACE_SYSTEM##_##a = \ { \ .system = TRACE_SYSTEM_STRING, \ .eval_string = #a, \ .eval_value = a \ }; \ static struct trace_eval_map __used \ __attribute__((section("_ftrace_eval_map"))) \ *TRACE_SYSTEM##_##a = &__##TRACE_SYSTEM##_##a #undef TRACE_DEFINE_SIZEOF #define TRACE_DEFINE_SIZEOF(a) \ static struct trace_eval_map __used __initdata \ __##TRACE_SYSTEM##_##a = \ { \ .system = TRACE_SYSTEM_STRING, \ .eval_string = "sizeof(" #a ")", \ .eval_value = sizeof(a) \ }; \ static struct trace_eval_map __used \ __attribute__((section("_ftrace_eval_map"))) \ *TRACE_SYSTEM##_##a = &__##TRACE_SYSTEM##_##a /* * DECLARE_EVENT_CLASS can be used to add a generic function * handlers for events. That is, if all events have the same * parameters and just have distinct trace points. * Each tracepoint can be defined with DEFINE_EVENT and that * will map the DECLARE_EVENT_CLASS to the tracepoint. * * TRACE_EVENT is a one to one mapping between tracepoint and template. */ #undef TRACE_EVENT #define TRACE_EVENT(name, proto, args, tstruct, assign, print) \ DECLARE_EVENT_CLASS(name, \ PARAMS(proto), \ PARAMS(args), \ PARAMS(tstruct), \ PARAMS(assign), \ PARAMS(print)); \ DEFINE_EVENT(name, name, PARAMS(proto), PARAMS(args)); #undef __field #define __field(type, item) type item; #undef __field_ext #define __field_ext(type, item, filter_type) type item; #undef __field_struct #define __field_struct(type, item) type item; #undef __field_struct_ext #define __field_struct_ext(type, item, filter_type) type item; #undef __array #define __array(type, item, len) type item[len]; #undef __dynamic_array #define __dynamic_array(type, item, len) u32 __data_loc_##item; #undef __string #define __string(item, src) __dynamic_array(char, item, -1) #undef __bitmask #define __bitmask(item, nr_bits) __dynamic_array(char, item, -1) #undef TP_STRUCT__entry #define TP_STRUCT__entry(args...) args #undef DECLARE_EVENT_CLASS #define DECLARE_EVENT_CLASS(name, proto, args, tstruct, assign, print) \ struct trace_event_raw_##name { \ struct trace_entry ent; \ tstruct \ char __data[0]; \ }; \ \ static struct trace_event_class event_class_##name; #undef DEFINE_EVENT #define DEFINE_EVENT(template, name, proto, args) \ static struct trace_event_call __used \ __attribute__((__aligned__(4))) event_##name #undef DEFINE_EVENT_FN #define DEFINE_EVENT_FN(template, name, proto, args, reg, unreg) \ DEFINE_EVENT(template, name, PARAMS(proto), PARAMS(args)) #undef DEFINE_EVENT_PRINT #define DEFINE_EVENT_PRINT(template, name, proto, args, print) \ DEFINE_EVENT(template, name, PARAMS(proto), PARAMS(args)) /* Callbacks are meaningless to ftrace. */ #undef TRACE_EVENT_FN #define TRACE_EVENT_FN(name, proto, args, tstruct, \ assign, print, reg, unreg) \ TRACE_EVENT(name, PARAMS(proto), PARAMS(args), \ PARAMS(tstruct), PARAMS(assign), PARAMS(print)) \ #undef TRACE_EVENT_FN_COND #define TRACE_EVENT_FN_COND(name, proto, args, cond, tstruct, \ assign, print, reg, unreg) \ TRACE_EVENT_CONDITION(name, PARAMS(proto), PARAMS(args), PARAMS(cond), \ PARAMS(tstruct), PARAMS(assign), PARAMS(print)) \ #undef TRACE_EVENT_FLAGS #define TRACE_EVENT_FLAGS(name, value) \ __TRACE_EVENT_FLAGS(name, value) #undef TRACE_EVENT_PERF_PERM #define TRACE_EVENT_PERF_PERM(name, expr...) \ __TRACE_EVENT_PERF_PERM(name, expr) #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) /* * Stage 2 of the trace events. * * Include the following: * * struct trace_event_data_offsets_<call> { * u32 <item1>; * u32 <item2>; * [...] * }; * * The __dynamic_array() macro will create each u32 <item>, this is * to keep the offset of each array from the beginning of the event. * The size of an array is also encoded, in the higher 16 bits of <item>. */ #undef TRACE_DEFINE_ENUM #define TRACE_DEFINE_ENUM(a) #undef TRACE_DEFINE_SIZEOF #define TRACE_DEFINE_SIZEOF(a) #undef __field #define __field(type, item) #undef __field_ext #define __field_ext(type, item, filter_type) #undef __field_struct #define __field_struct(type, item) #undef __field_struct_ext #define __field_struct_ext(type, item, filter_type) #undef __array #define __array(type, item, len) #undef __dynamic_array #define __dynamic_array(type, item, len) u32 item; #undef __string #define __string(item, src) __dynamic_array(char, item, -1) #undef __bitmask #define __bitmask(item, nr_bits) __dynamic_array(unsigned long, item, -1) #undef DECLARE_EVENT_CLASS #define DECLARE_EVENT_CLASS(call, proto, args, tstruct, assign, print) \ struct trace_event_data_offsets_##call { \ tstruct; \ }; #undef DEFINE_EVENT #define DEFINE_EVENT(template, name, proto, args) #undef DEFINE_EVENT_PRINT #define DEFINE_EVENT_PRINT(template, name, proto, args, print) \ DEFINE_EVENT(template, name, PARAMS(proto), PARAMS(args)) #undef TRACE_EVENT_FLAGS #define TRACE_EVENT_FLAGS(event, flag) #undef TRACE_EVENT_PERF_PERM #define TRACE_EVENT_PERF_PERM(event, expr...) #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) /* * Stage 3 of the trace events. * * Override the macros in <trace/trace_events.h> to include the following: * * enum print_line_t * trace_raw_output_<call>(struct trace_iterator *iter, int flags) * { * struct trace_seq *s = &iter->seq; * struct trace_event_raw_<call> *field; <-- defined in stage 1 * struct trace_entry *entry; * struct trace_seq *p = &iter->tmp_seq; * int ret; * * entry = iter->ent; * * if (entry->type != event_<call>->event.type) { * WARN_ON_ONCE(1); * return TRACE_TYPE_UNHANDLED; * } * * field = (typeof(field))entry; * * trace_seq_init(p); * ret = trace_seq_printf(s, "%s: ", <call>); * if (ret) * ret = trace_seq_printf(s, <TP_printk> "\n"); * if (!ret) * return TRACE_TYPE_PARTIAL_LINE; * * return TRACE_TYPE_HANDLED; * } * * This is the method used to print the raw event to the trace * output format. Note, this is not needed if the data is read * in binary. */ #undef __entry #define __entry field #undef TP_printk #define TP_printk(fmt, args...) fmt "\n", args #undef __get_dynamic_array #define __get_dynamic_array(field) \ ((void *)__entry + (__entry->__data_loc_##field & 0xffff)) #undef __get_dynamic_array_len #define __get_dynamic_array_len(field) \ ((__entry->__data_loc_##field >> 16) & 0xffff) #undef __get_str #define __get_str(field) ((char *)__get_dynamic_array(field)) #undef __get_bitmask #define __get_bitmask(field) \ ({ \ void *__bitmask = __get_dynamic_array(field); \ unsigned int __bitmask_size; \ __bitmask_size = __get_dynamic_array_len(field); \ trace_print_bitmask_seq(p, __bitmask, __bitmask_size); \ }) #undef __print_flags #define __print_flags(flag, delim, flag_array...) \ ({ \ static const struct trace_print_flags __flags[] = \ { flag_array, { -1, NULL }}; \ trace_print_flags_seq(p, delim, flag, __flags); \ }) #undef __print_symbolic #define __print_symbolic(value, symbol_array...) \ ({ \ static const struct trace_print_flags symbols[] = \ { symbol_array, { -1, NULL }}; \ trace_print_symbols_seq(p, value, symbols); \ }) #undef __print_flags_u64 #undef __print_symbolic_u64 #if BITS_PER_LONG == 32 #define __print_flags_u64(flag, delim, flag_array...) \ ({ \ static const struct trace_print_flags_u64 __flags[] = \ { flag_array, { -1, NULL } }; \ trace_print_flags_seq_u64(p, delim, flag, __flags); \ }) #define __print_symbolic_u64(value, symbol_array...) \ ({ \ static const struct trace_print_flags_u64 symbols[] = \ { symbol_array, { -1, NULL } }; \ trace_print_symbols_seq_u64(p, value, symbols); \ }) #else #define __print_flags_u64(flag, delim, flag_array...) \ __print_flags(flag, delim, flag_array) #define __print_symbolic_u64(value, symbol_array...) \ __print_symbolic(value, symbol_array) #endif #undef __print_hex #define __print_hex(buf, buf_len) \ trace_print_hex_seq(p, buf, buf_len, false) #undef __print_hex_str #define __print_hex_str(buf, buf_len) \ trace_print_hex_seq(p, buf, buf_len, true) #undef __print_array #define __print_array(array, count, el_size) \ ({ \ BUILD_BUG_ON(el_size != 1 && el_size != 2 && \ el_size != 4 && el_size != 8); \ trace_print_array_seq(p, array, count, el_size); \ }) #undef DECLARE_EVENT_CLASS #define DECLARE_EVENT_CLASS(call, proto, args, tstruct, assign, print) \ static notrace enum print_line_t \ trace_raw_output_##call(struct trace_iterator *iter, int flags, \ struct trace_event *trace_event) \ { \ struct trace_seq *s = &iter->seq; \ struct trace_seq __maybe_unused *p = &iter->tmp_seq; \ struct trace_event_raw_##call *field; \ int ret; \ \ field = (typeof(field))iter->ent; \ \ ret = trace_raw_output_prep(iter, trace_event); \ if (ret != TRACE_TYPE_HANDLED) \ return ret; \ \ trace_seq_printf(s, print); \ \ return trace_handle_return(s); \ } \ static struct trace_event_functions trace_event_type_funcs_##call = { \ .trace = trace_raw_output_##call, \ }; #undef DEFINE_EVENT_PRINT #define DEFINE_EVENT_PRINT(template, call, proto, args, print) \ static notrace enum print_line_t \ trace_raw_output_##call(struct trace_iterator *iter, int flags, \ struct trace_event *event) \ { \ struct trace_event_raw_##template *field; \ struct trace_entry *entry; \ struct trace_seq *p = &iter->tmp_seq; \ \ entry = iter->ent; \ \ if (entry->type != event_##call.event.type) { \ WARN_ON_ONCE(1); \ return TRACE_TYPE_UNHANDLED; \ } \ \ field = (typeof(field))entry; \ \ trace_seq_init(p); \ return trace_output_call(iter, #call, print); \ } \ static struct trace_event_functions trace_event_type_funcs_##call = { \ .trace = trace_raw_output_##call, \ }; #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) #undef __field_ext #define __field_ext(type, item, filter_type) \ ret = trace_define_field(event_call, #type, #item, \ offsetof(typeof(field), item), \ sizeof(field.item), \ is_signed_type(type), filter_type); \ if (ret) \ return ret; #undef __field_struct_ext #define __field_struct_ext(type, item, filter_type) \ ret = trace_define_field(event_call, #type, #item, \ offsetof(typeof(field), item), \ sizeof(field.item), \ 0, filter_type); \ if (ret) \ return ret; #undef __field #define __field(type, item) __field_ext(type, item, FILTER_OTHER) #undef __field_struct #define __field_struct(type, item) __field_struct_ext(type, item, FILTER_OTHER) #undef __array #define __array(type, item, len) \ do { \ char *type_str = #type"["__stringify(len)"]"; \ BUILD_BUG_ON(len > MAX_FILTER_STR_VAL); \ BUILD_BUG_ON(len <= 0); \ ret = trace_define_field(event_call, type_str, #item, \ offsetof(typeof(field), item), \ sizeof(field.item), \ is_signed_type(type), FILTER_OTHER); \ if (ret) \ return ret; \ } while (0); #undef __dynamic_array #define __dynamic_array(type, item, len) \ ret = trace_define_field(event_call, "__data_loc " #type "[]", #item, \ offsetof(typeof(field), __data_loc_##item), \ sizeof(field.__data_loc_##item), \ is_signed_type(type), FILTER_OTHER); #undef __string #define __string(item, src) __dynamic_array(char, item, -1) #undef __bitmask #define __bitmask(item, nr_bits) __dynamic_array(unsigned long, item, -1) #undef DECLARE_EVENT_CLASS #define DECLARE_EVENT_CLASS(call, proto, args, tstruct, func, print) \ static int notrace __init \ trace_event_define_fields_##call(struct trace_event_call *event_call) \ { \ struct trace_event_raw_##call field; \ int ret; \ \ tstruct; \ \ return ret; \ } #undef DEFINE_EVENT #define DEFINE_EVENT(template, name, proto, args) #undef DEFINE_EVENT_PRINT #define DEFINE_EVENT_PRINT(template, name, proto, args, print) \ DEFINE_EVENT(template, name, PARAMS(proto), PARAMS(args)) #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) /* * remember the offset of each array from the beginning of the event. */ #undef __entry #define __entry entry #undef __field #define __field(type, item) #undef __field_ext #define __field_ext(type, item, filter_type) #undef __field_struct #define __field_struct(type, item) #undef __field_struct_ext #define __field_struct_ext(type, item, filter_type) #undef __array #define __array(type, item, len) #undef __dynamic_array #define __dynamic_array(type, item, len) \ __item_length = (len) * sizeof(type); \ __data_offsets->item = __data_size + \ offsetof(typeof(*entry), __data); \ __data_offsets->item |= __item_length << 16; \ __data_size += __item_length; #undef __string #define __string(item, src) __dynamic_array(char, item, \ strlen((src) ? (const char *)(src) : "(null)") + 1) /* * __bitmask_size_in_bytes_raw is the number of bytes needed to hold * num_possible_cpus(). */ #define __bitmask_size_in_bytes_raw(nr_bits) \ (((nr_bits) + 7) / 8) #define __bitmask_size_in_longs(nr_bits) \ ((__bitmask_size_in_bytes_raw(nr_bits) + \ ((BITS_PER_LONG / 8) - 1)) / (BITS_PER_LONG / 8)) /* * __bitmask_size_in_bytes is the number of bytes needed to hold * num_possible_cpus() padded out to the nearest long. This is what * is saved in the buffer, just to be consistent. */ #define __bitmask_size_in_bytes(nr_bits) \ (__bitmask_size_in_longs(nr_bits) * (BITS_PER_LONG / 8)) #undef __bitmask #define __bitmask(item, nr_bits) __dynamic_array(unsigned long, item, \ __bitmask_size_in_longs(nr_bits)) #undef DECLARE_EVENT_CLASS #define DECLARE_EVENT_CLASS(call, proto, args, tstruct, assign, print) \ static inline notrace int trace_event_get_offsets_##call( \ struct trace_event_data_offsets_##call *__data_offsets, proto) \ { \ int __data_size = 0; \ int __maybe_unused __item_length; \ struct trace_event_raw_##call __maybe_unused *entry; \ \ tstruct; \ \ return __data_size; \ } #undef DEFINE_EVENT #define DEFINE_EVENT(template, name, proto, args) #undef DEFINE_EVENT_PRINT #define DEFINE_EVENT_PRINT(template, name, proto, args, print) \ DEFINE_EVENT(template, name, PARAMS(proto), PARAMS(args)) #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) /* * Stage 4 of the trace events. * * Override the macros in <trace/trace_events.h> to include the following: * * For those macros defined with TRACE_EVENT: * * static struct trace_event_call event_<call>; * * static void trace_event_raw_event_<call>(void *__data, proto) * { * struct trace_event_file *trace_file = __data; * struct trace_event_call *event_call = trace_file->event_call; * struct trace_event_data_offsets_<call> __maybe_unused __data_offsets; * unsigned long eflags = trace_file->flags; * enum event_trigger_type __tt = ETT_NONE; * struct ring_buffer_event *event; * struct trace_event_raw_<call> *entry; <-- defined in stage 1 * struct ring_buffer *buffer; * unsigned long irq_flags; * int __data_size; * int pc; * * if (!(eflags & EVENT_FILE_FL_TRIGGER_COND)) { * if (eflags & EVENT_FILE_FL_TRIGGER_MODE) * event_triggers_call(trace_file, NULL); * if (eflags & EVENT_FILE_FL_SOFT_DISABLED) * return; * } * * local_save_flags(irq_flags); * pc = preempt_count(); * * __data_size = trace_event_get_offsets_<call>(&__data_offsets, args); * * event = trace_event_buffer_lock_reserve(&buffer, trace_file, * event_<call>->event.type, * sizeof(*entry) + __data_size, * irq_flags, pc); * if (!event) * return; * entry = ring_buffer_event_data(event); * * { <assign>; } <-- Here we assign the entries by the __field and * __array macros. * * if (eflags & EVENT_FILE_FL_TRIGGER_COND) * __tt = event_triggers_call(trace_file, entry); * * if (test_bit(EVENT_FILE_FL_SOFT_DISABLED_BIT, * &trace_file->flags)) * ring_buffer_discard_commit(buffer, event); * else if (!filter_check_discard(trace_file, entry, buffer, event)) * trace_buffer_unlock_commit(buffer, event, irq_flags, pc); * * if (__tt) * event_triggers_post_call(trace_file, __tt); * } * * static struct trace_event ftrace_event_type_<call> = { * .trace = trace_raw_output_<call>, <-- stage 2 * }; * * static char print_fmt_<call>[] = <TP_printk>; * * static struct trace_event_class __used event_class_<template> = { * .system = "<system>", * .define_fields = trace_event_define_fields_<call>, * .fields = LIST_HEAD_INIT(event_class_##call.fields), * .raw_init = trace_event_raw_init, * .probe = trace_event_raw_event_##call, * .reg = trace_event_reg, * }; * * static struct trace_event_call event_<call> = { * .class = event_class_<template>, * { * .tp = &__tracepoint_<call>, * }, * .event = &ftrace_event_type_<call>, * .print_fmt = print_fmt_<call>, * .flags = TRACE_EVENT_FL_TRACEPOINT, * }; * // its only safe to use pointers when doing linker tricks to * // create an array. * static struct trace_event_call __used * __attribute__((section("_ftrace_events"))) *__event_<call> = &event_<call>; * */ #ifdef CONFIG_PERF_EVENTS #define _TRACE_PERF_PROTO(call, proto) \ static notrace void \ perf_trace_##call(void *__data, proto); #define _TRACE_PERF_INIT(call) \ .perf_probe = perf_trace_##call, #else #define _TRACE_PERF_PROTO(call, proto) #define _TRACE_PERF_INIT(call) #endif /* CONFIG_PERF_EVENTS */ #undef __entry #define __entry entry #undef __field #define __field(type, item) #undef __field_struct #define __field_struct(type, item) #undef __array #define __array(type, item, len) #undef __dynamic_array #define __dynamic_array(type, item, len) \ __entry->__data_loc_##item = __data_offsets.item; #undef __string #define __string(item, src) __dynamic_array(char, item, -1) #undef __assign_str #define __assign_str(dst, src) \ strcpy(__get_str(dst), (src) ? (const char *)(src) : "(null)"); #undef __bitmask #define __bitmask(item, nr_bits) __dynamic_array(unsigned long, item, -1) #undef __get_bitmask #define __get_bitmask(field) (char *)__get_dynamic_array(field) #undef __assign_bitmask #define __assign_bitmask(dst, src, nr_bits) \ memcpy(__get_bitmask(dst), (src), __bitmask_size_in_bytes(nr_bits)) #undef TP_fast_assign #define TP_fast_assign(args...) args #undef __perf_count #define __perf_count(c) (c) #undef __perf_task #define __perf_task(t) (t) #undef DECLARE_EVENT_CLASS #define DECLARE_EVENT_CLASS(call, proto, args, tstruct, assign, print) \ \ static notrace void \ trace_event_raw_event_##call(void *__data, proto) \ { \ struct trace_event_file *trace_file = __data; \ struct trace_event_data_offsets_##call __maybe_unused __data_offsets;\ struct trace_event_buffer fbuffer; \ struct trace_event_raw_##call *entry; \ int __data_size; \ \ if (trace_trigger_soft_disabled(trace_file)) \ return; \ \ __data_size = trace_event_get_offsets_##call(&__data_offsets, args); \ \ entry = trace_event_buffer_reserve(&fbuffer, trace_file, \ sizeof(*entry) + __data_size); \ \ if (!entry) \ return; \ \ tstruct \ \ { assign; } \ \ trace_event_buffer_commit(&fbuffer); \ } /* * The ftrace_test_probe is compiled out, it is only here as a build time check * to make sure that if the tracepoint handling changes, the ftrace probe will * fail to compile unless it too is updated. */ #undef DEFINE_EVENT #define DEFINE_EVENT(template, call, proto, args) \ static inline void ftrace_test_probe_##call(void) \ { \ check_trace_callback_type_##call(trace_event_raw_event_##template); \ } #undef DEFINE_EVENT_PRINT #define DEFINE_EVENT_PRINT(template, name, proto, args, print) #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) #undef __entry #define __entry REC #undef __print_flags #undef __print_symbolic #undef __print_hex #undef __print_hex_str #undef __get_dynamic_array #undef __get_dynamic_array_len #undef __get_str #undef __get_bitmask #undef __print_array #undef TP_printk #define TP_printk(fmt, args...) "\"" fmt "\", " __stringify(args) #undef DECLARE_EVENT_CLASS #define DECLARE_EVENT_CLASS(call, proto, args, tstruct, assign, print) \ _TRACE_PERF_PROTO(call, PARAMS(proto)); \ static char print_fmt_##call[] = print; \ static struct trace_event_class __used __refdata event_class_##call = { \ .system = TRACE_SYSTEM_STRING, \ .define_fields = trace_event_define_fields_##call, \ .fields = LIST_HEAD_INIT(event_class_##call.fields),\ .raw_init = trace_event_raw_init, \ .probe = trace_event_raw_event_##call, \ .reg = trace_event_reg, \ _TRACE_PERF_INIT(call) \ }; #undef DEFINE_EVENT #define DEFINE_EVENT(template, call, proto, args) \ \ static struct trace_event_call __used event_##call = { \ .class = &event_class_##template, \ { \ .tp = &__tracepoint_##call, \ }, \ .event.funcs = &trace_event_type_funcs_##template, \ .print_fmt = print_fmt_##template, \ .flags = TRACE_EVENT_FL_TRACEPOINT, \ }; \ static struct trace_event_call __used \ __attribute__((section("_ftrace_events"))) *__event_##call = &event_##call #undef DEFINE_EVENT_PRINT #define DEFINE_EVENT_PRINT(template, call, proto, args, print) \ \ static char print_fmt_##call[] = print; \ \ static struct trace_event_call __used event_##call = { \ .class = &event_class_##template, \ { \ .tp = &__tracepoint_##call, \ }, \ .event.funcs = &trace_event_type_funcs_##call, \ .print_fmt = print_fmt_##call, \ .flags = TRACE_EVENT_FL_TRACEPOINT, \ }; \ static struct trace_event_call __used \ __attribute__((section("_ftrace_events"))) *__event_##call = &event_##call #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) |