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