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 __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 __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) 214 215 #undef TRACE_EVENT_FLAGS 216 #define TRACE_EVENT_FLAGS(event, flag) 217 218 #undef TRACE_EVENT_PERF_PERM 219 #define TRACE_EVENT_PERF_PERM(event, expr...) 220 221 #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) 222 223 /* 224 * Stage 3 of the trace events. 225 * 226 * Override the macros in the event tracepoint header <trace/events/XXX.h> 227 * to include the following: 228 * 229 * enum print_line_t 230 * trace_raw_output_<call>(struct trace_iterator *iter, int flags) 231 * { 232 * struct trace_seq *s = &iter->seq; 233 * struct trace_event_raw_<call> *field; <-- defined in stage 1 234 * struct trace_entry *entry; 235 * struct trace_seq *p = &iter->tmp_seq; 236 * int ret; 237 * 238 * entry = iter->ent; 239 * 240 * if (entry->type != event_<call>->event.type) { 241 * WARN_ON_ONCE(1); 242 * return TRACE_TYPE_UNHANDLED; 243 * } 244 * 245 * field = (typeof(field))entry; 246 * 247 * trace_seq_init(p); 248 * ret = trace_seq_printf(s, "%s: ", <call>); 249 * if (ret) 250 * ret = trace_seq_printf(s, <TP_printk> "\n"); 251 * if (!ret) 252 * return TRACE_TYPE_PARTIAL_LINE; 253 * 254 * return TRACE_TYPE_HANDLED; 255 * } 256 * 257 * This is the method used to print the raw event to the trace 258 * output format. Note, this is not needed if the data is read 259 * in binary. 260 */ 261 262 #undef __entry 263 #define __entry field 264 265 #undef TP_printk 266 #define TP_printk(fmt, args...) fmt "\n", args 267 268 #undef __get_dynamic_array 269 #define __get_dynamic_array(field) \ 270 ((void *)__entry + (__entry->__data_loc_##field & 0xffff)) 271 272 #undef __get_dynamic_array_len 273 #define __get_dynamic_array_len(field) \ 274 ((__entry->__data_loc_##field >> 16) & 0xffff) 275 276 #undef __get_str 277 #define __get_str(field) ((char *)__get_dynamic_array(field)) 278 279 #undef __get_bitmask 280 #define __get_bitmask(field) \ 281 ({ \ 282 void *__bitmask = __get_dynamic_array(field); \ 283 unsigned int __bitmask_size; \ 284 __bitmask_size = __get_dynamic_array_len(field); \ 285 trace_print_bitmask_seq(p, __bitmask, __bitmask_size); \ 286 }) 287 288 #undef __print_flags 289 #define __print_flags(flag, delim, flag_array...) \ 290 ({ \ 291 static const struct trace_print_flags __flags[] = \ 292 { flag_array, { -1, NULL }}; \ 293 trace_print_flags_seq(p, delim, flag, __flags); \ 294 }) 295 296 #undef __print_symbolic 297 #define __print_symbolic(value, symbol_array...) \ 298 ({ \ 299 static const struct trace_print_flags symbols[] = \ 300 { symbol_array, { -1, NULL }}; \ 301 trace_print_symbols_seq(p, value, symbols); \ 302 }) 303 304 #undef __print_flags_u64 305 #undef __print_symbolic_u64 306 #if BITS_PER_LONG == 32 307 #define __print_flags_u64(flag, delim, flag_array...) \ 308 ({ \ 309 static const struct trace_print_flags_u64 __flags[] = \ 310 { flag_array, { -1, NULL } }; \ 311 trace_print_flags_seq_u64(p, delim, flag, __flags); \ 312 }) 313 314 #define __print_symbolic_u64(value, symbol_array...) \ 315 ({ \ 316 static const struct trace_print_flags_u64 symbols[] = \ 317 { symbol_array, { -1, NULL } }; \ 318 trace_print_symbols_seq_u64(p, value, symbols); \ 319 }) 320 #else 321 #define __print_flags_u64(flag, delim, flag_array...) \ 322 __print_flags(flag, delim, flag_array) 323 324 #define __print_symbolic_u64(value, symbol_array...) \ 325 __print_symbolic(value, symbol_array) 326 #endif 327 328 #undef __print_hex 329 #define __print_hex(buf, buf_len) \ 330 trace_print_hex_seq(p, buf, buf_len, false) 331 332 #undef __print_hex_str 333 #define __print_hex_str(buf, buf_len) \ 334 trace_print_hex_seq(p, buf, buf_len, true) 335 336 #undef __print_array 337 #define __print_array(array, count, el_size) \ 338 ({ \ 339 BUILD_BUG_ON(el_size != 1 && el_size != 2 && \ 340 el_size != 4 && el_size != 8); \ 341 trace_print_array_seq(p, array, count, el_size); \ 342 }) 343 344 #undef __print_hex_dump 345 #define __print_hex_dump(prefix_str, prefix_type, \ 346 rowsize, groupsize, buf, len, ascii) \ 347 trace_print_hex_dump_seq(p, prefix_str, prefix_type, \ 348 rowsize, groupsize, buf, len, ascii) 349 350 #undef DECLARE_EVENT_CLASS 351 #define DECLARE_EVENT_CLASS(call, proto, args, tstruct, assign, print) \ 352 static notrace enum print_line_t \ 353 trace_raw_output_##call(struct trace_iterator *iter, int flags, \ 354 struct trace_event *trace_event) \ 355 { \ 356 struct trace_seq *s = &iter->seq; \ 357 struct trace_seq __maybe_unused *p = &iter->tmp_seq; \ 358 struct trace_event_raw_##call *field; \ 359 int ret; \ 360 \ 361 field = (typeof(field))iter->ent; \ 362 \ 363 ret = trace_raw_output_prep(iter, trace_event); \ 364 if (ret != TRACE_TYPE_HANDLED) \ 365 return ret; \ 366 \ 367 trace_seq_printf(s, print); \ 368 \ 369 return trace_handle_return(s); \ 370 } \ 371 static struct trace_event_functions trace_event_type_funcs_##call = { \ 372 .trace = trace_raw_output_##call, \ 373 }; 374 375 #undef DEFINE_EVENT_PRINT 376 #define DEFINE_EVENT_PRINT(template, call, proto, args, print) \ 377 static notrace enum print_line_t \ 378 trace_raw_output_##call(struct trace_iterator *iter, int flags, \ 379 struct trace_event *event) \ 380 { \ 381 struct trace_event_raw_##template *field; \ 382 struct trace_entry *entry; \ 383 struct trace_seq *p = &iter->tmp_seq; \ 384 \ 385 entry = iter->ent; \ 386 \ 387 if (entry->type != event_##call.event.type) { \ 388 WARN_ON_ONCE(1); \ 389 return TRACE_TYPE_UNHANDLED; \ 390 } \ 391 \ 392 field = (typeof(field))entry; \ 393 \ 394 trace_seq_init(p); \ 395 return trace_output_call(iter, #call, print); \ 396 } \ 397 static struct trace_event_functions trace_event_type_funcs_##call = { \ 398 .trace = trace_raw_output_##call, \ 399 }; 400 401 #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) 402 403 #undef __field_ext 404 #define __field_ext(_type, _item, _filter_type) { \ 405 .type = #_type, .name = #_item, \ 406 .size = sizeof(_type), .align = __alignof__(_type), \ 407 .is_signed = is_signed_type(_type), .filter_type = _filter_type }, 408 409 #undef __field_struct_ext 410 #define __field_struct_ext(_type, _item, _filter_type) { \ 411 .type = #_type, .name = #_item, \ 412 .size = sizeof(_type), .align = __alignof__(_type), \ 413 0, .filter_type = _filter_type }, 414 415 #undef __field 416 #define __field(type, item) __field_ext(type, item, FILTER_OTHER) 417 418 #undef __field_struct 419 #define __field_struct(type, item) __field_struct_ext(type, item, FILTER_OTHER) 420 421 #undef __array 422 #define __array(_type, _item, _len) { \ 423 .type = #_type"["__stringify(_len)"]", .name = #_item, \ 424 .size = sizeof(_type[_len]), .align = __alignof__(_type), \ 425 .is_signed = is_signed_type(_type), .filter_type = FILTER_OTHER }, 426 427 #undef __dynamic_array 428 #define __dynamic_array(_type, _item, _len) { \ 429 .type = "__data_loc " #_type "[]", .name = #_item, \ 430 .size = 4, .align = 4, \ 431 .is_signed = is_signed_type(_type), .filter_type = FILTER_OTHER }, 432 433 #undef __string 434 #define __string(item, src) __dynamic_array(char, item, -1) 435 436 #undef __bitmask 437 #define __bitmask(item, nr_bits) __dynamic_array(unsigned long, item, -1) 438 439 #undef DECLARE_EVENT_CLASS 440 #define DECLARE_EVENT_CLASS(call, proto, args, tstruct, func, print) \ 441 static struct trace_event_fields trace_event_fields_##call[] = { \ 442 tstruct \ 443 {} }; 444 445 #undef DEFINE_EVENT_PRINT 446 #define DEFINE_EVENT_PRINT(template, name, proto, args, print) 447 448 #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) 449 450 /* 451 * remember the offset of each array from the beginning of the event. 452 */ 453 454 #undef __entry 455 #define __entry entry 456 457 #undef __field 458 #define __field(type, item) 459 460 #undef __field_ext 461 #define __field_ext(type, item, filter_type) 462 463 #undef __field_struct 464 #define __field_struct(type, item) 465 466 #undef __field_struct_ext 467 #define __field_struct_ext(type, item, filter_type) 468 469 #undef __array 470 #define __array(type, item, len) 471 472 #undef __dynamic_array 473 #define __dynamic_array(type, item, len) \ 474 __item_length = (len) * sizeof(type); \ 475 __data_offsets->item = __data_size + \ 476 offsetof(typeof(*entry), __data); \ 477 __data_offsets->item |= __item_length << 16; \ 478 __data_size += __item_length; 479 480 #undef __string 481 #define __string(item, src) __dynamic_array(char, item, \ 482 strlen((src) ? (const char *)(src) : "(null)") + 1) 483 484 /* 485 * __bitmask_size_in_bytes_raw is the number of bytes needed to hold 486 * num_possible_cpus(). 487 */ 488 #define __bitmask_size_in_bytes_raw(nr_bits) \ 489 (((nr_bits) + 7) / 8) 490 491 #define __bitmask_size_in_longs(nr_bits) \ 492 ((__bitmask_size_in_bytes_raw(nr_bits) + \ 493 ((BITS_PER_LONG / 8) - 1)) / (BITS_PER_LONG / 8)) 494 495 /* 496 * __bitmask_size_in_bytes is the number of bytes needed to hold 497 * num_possible_cpus() padded out to the nearest long. This is what 498 * is saved in the buffer, just to be consistent. 499 */ 500 #define __bitmask_size_in_bytes(nr_bits) \ 501 (__bitmask_size_in_longs(nr_bits) * (BITS_PER_LONG / 8)) 502 503 #undef __bitmask 504 #define __bitmask(item, nr_bits) __dynamic_array(unsigned long, item, \ 505 __bitmask_size_in_longs(nr_bits)) 506 507 #undef DECLARE_EVENT_CLASS 508 #define DECLARE_EVENT_CLASS(call, proto, args, tstruct, assign, print) \ 509 static inline notrace int trace_event_get_offsets_##call( \ 510 struct trace_event_data_offsets_##call *__data_offsets, proto) \ 511 { \ 512 int __data_size = 0; \ 513 int __maybe_unused __item_length; \ 514 struct trace_event_raw_##call __maybe_unused *entry; \ 515 \ 516 tstruct; \ 517 \ 518 return __data_size; \ 519 } 520 521 #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) 522 523 /* 524 * Stage 4 of the trace events. 525 * 526 * Override the macros in the event tracepoint header <trace/events/XXX.h> 527 * to include the following: 528 * 529 * For those macros defined with TRACE_EVENT: 530 * 531 * static struct trace_event_call event_<call>; 532 * 533 * static void trace_event_raw_event_<call>(void *__data, proto) 534 * { 535 * struct trace_event_file *trace_file = __data; 536 * struct trace_event_call *event_call = trace_file->event_call; 537 * struct trace_event_data_offsets_<call> __maybe_unused __data_offsets; 538 * unsigned long eflags = trace_file->flags; 539 * enum event_trigger_type __tt = ETT_NONE; 540 * struct ring_buffer_event *event; 541 * struct trace_event_raw_<call> *entry; <-- defined in stage 1 542 * struct trace_buffer *buffer; 543 * unsigned long irq_flags; 544 * int __data_size; 545 * int pc; 546 * 547 * if (!(eflags & EVENT_FILE_FL_TRIGGER_COND)) { 548 * if (eflags & EVENT_FILE_FL_TRIGGER_MODE) 549 * event_triggers_call(trace_file, NULL); 550 * if (eflags & EVENT_FILE_FL_SOFT_DISABLED) 551 * return; 552 * } 553 * 554 * local_save_flags(irq_flags); 555 * pc = preempt_count(); 556 * 557 * __data_size = trace_event_get_offsets_<call>(&__data_offsets, args); 558 * 559 * event = trace_event_buffer_lock_reserve(&buffer, trace_file, 560 * event_<call>->event.type, 561 * sizeof(*entry) + __data_size, 562 * irq_flags, pc); 563 * if (!event) 564 * return; 565 * entry = ring_buffer_event_data(event); 566 * 567 * { <assign>; } <-- Here we assign the entries by the __field and 568 * __array macros. 569 * 570 * if (eflags & EVENT_FILE_FL_TRIGGER_COND) 571 * __tt = event_triggers_call(trace_file, entry); 572 * 573 * if (test_bit(EVENT_FILE_FL_SOFT_DISABLED_BIT, 574 * &trace_file->flags)) 575 * ring_buffer_discard_commit(buffer, event); 576 * else if (!filter_check_discard(trace_file, entry, buffer, event)) 577 * trace_buffer_unlock_commit(buffer, event, irq_flags, pc); 578 * 579 * if (__tt) 580 * event_triggers_post_call(trace_file, __tt); 581 * } 582 * 583 * static struct trace_event ftrace_event_type_<call> = { 584 * .trace = trace_raw_output_<call>, <-- stage 2 585 * }; 586 * 587 * static char print_fmt_<call>[] = <TP_printk>; 588 * 589 * static struct trace_event_class __used event_class_<template> = { 590 * .system = "<system>", 591 * .fields_array = trace_event_fields_<call>, 592 * .fields = LIST_HEAD_INIT(event_class_##call.fields), 593 * .raw_init = trace_event_raw_init, 594 * .probe = trace_event_raw_event_##call, 595 * .reg = trace_event_reg, 596 * }; 597 * 598 * static struct trace_event_call event_<call> = { 599 * .class = event_class_<template>, 600 * { 601 * .tp = &__tracepoint_<call>, 602 * }, 603 * .event = &ftrace_event_type_<call>, 604 * .print_fmt = print_fmt_<call>, 605 * .flags = TRACE_EVENT_FL_TRACEPOINT, 606 * }; 607 * // its only safe to use pointers when doing linker tricks to 608 * // create an array. 609 * static struct trace_event_call __used 610 * __section("_ftrace_events") *__event_<call> = &event_<call>; 611 * 612 */ 613 614 #ifdef CONFIG_PERF_EVENTS 615 616 #define _TRACE_PERF_PROTO(call, proto) \ 617 static notrace void \ 618 perf_trace_##call(void *__data, proto); 619 620 #define _TRACE_PERF_INIT(call) \ 621 .perf_probe = perf_trace_##call, 622 623 #else 624 #define _TRACE_PERF_PROTO(call, proto) 625 #define _TRACE_PERF_INIT(call) 626 #endif /* CONFIG_PERF_EVENTS */ 627 628 #undef __entry 629 #define __entry entry 630 631 #undef __field 632 #define __field(type, item) 633 634 #undef __field_struct 635 #define __field_struct(type, item) 636 637 #undef __array 638 #define __array(type, item, len) 639 640 #undef __dynamic_array 641 #define __dynamic_array(type, item, len) \ 642 __entry->__data_loc_##item = __data_offsets.item; 643 644 #undef __string 645 #define __string(item, src) __dynamic_array(char, item, -1) 646 647 #undef __assign_str 648 #define __assign_str(dst, src) \ 649 strcpy(__get_str(dst), (src) ? (const char *)(src) : "(null)"); 650 651 #undef __bitmask 652 #define __bitmask(item, nr_bits) __dynamic_array(unsigned long, item, -1) 653 654 #undef __get_bitmask 655 #define __get_bitmask(field) (char *)__get_dynamic_array(field) 656 657 #undef __assign_bitmask 658 #define __assign_bitmask(dst, src, nr_bits) \ 659 memcpy(__get_bitmask(dst), (src), __bitmask_size_in_bytes(nr_bits)) 660 661 #undef TP_fast_assign 662 #define TP_fast_assign(args...) args 663 664 #undef __perf_count 665 #define __perf_count(c) (c) 666 667 #undef __perf_task 668 #define __perf_task(t) (t) 669 670 #undef DECLARE_EVENT_CLASS 671 #define DECLARE_EVENT_CLASS(call, proto, args, tstruct, assign, print) \ 672 \ 673 static notrace void \ 674 trace_event_raw_event_##call(void *__data, proto) \ 675 { \ 676 struct trace_event_file *trace_file = __data; \ 677 struct trace_event_data_offsets_##call __maybe_unused __data_offsets;\ 678 struct trace_event_buffer fbuffer; \ 679 struct trace_event_raw_##call *entry; \ 680 int __data_size; \ 681 \ 682 if (trace_trigger_soft_disabled(trace_file)) \ 683 return; \ 684 \ 685 __data_size = trace_event_get_offsets_##call(&__data_offsets, args); \ 686 \ 687 entry = trace_event_buffer_reserve(&fbuffer, trace_file, \ 688 sizeof(*entry) + __data_size); \ 689 \ 690 if (!entry) \ 691 return; \ 692 \ 693 tstruct \ 694 \ 695 { assign; } \ 696 \ 697 trace_event_buffer_commit(&fbuffer); \ 698 } 699 /* 700 * The ftrace_test_probe is compiled out, it is only here as a build time check 701 * to make sure that if the tracepoint handling changes, the ftrace probe will 702 * fail to compile unless it too is updated. 703 */ 704 705 #undef DEFINE_EVENT 706 #define DEFINE_EVENT(template, call, proto, args) \ 707 static inline void ftrace_test_probe_##call(void) \ 708 { \ 709 check_trace_callback_type_##call(trace_event_raw_event_##template); \ 710 } 711 712 #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) 713 714 #undef __entry 715 #define __entry REC 716 717 #undef __print_flags 718 #undef __print_symbolic 719 #undef __print_hex 720 #undef __print_hex_str 721 #undef __get_dynamic_array 722 #undef __get_dynamic_array_len 723 #undef __get_str 724 #undef __get_bitmask 725 #undef __print_array 726 #undef __print_hex_dump 727 728 #undef TP_printk 729 #define TP_printk(fmt, args...) "\"" fmt "\", " __stringify(args) 730 731 #undef DECLARE_EVENT_CLASS 732 #define DECLARE_EVENT_CLASS(call, proto, args, tstruct, assign, print) \ 733 _TRACE_PERF_PROTO(call, PARAMS(proto)); \ 734 static char print_fmt_##call[] = print; \ 735 static struct trace_event_class __used __refdata event_class_##call = { \ 736 .system = TRACE_SYSTEM_STRING, \ 737 .fields_array = trace_event_fields_##call, \ 738 .fields = LIST_HEAD_INIT(event_class_##call.fields),\ 739 .raw_init = trace_event_raw_init, \ 740 .probe = trace_event_raw_event_##call, \ 741 .reg = trace_event_reg, \ 742 _TRACE_PERF_INIT(call) \ 743 }; 744 745 #undef DEFINE_EVENT 746 #define DEFINE_EVENT(template, call, proto, args) \ 747 \ 748 static struct trace_event_call __used event_##call = { \ 749 .class = &event_class_##template, \ 750 { \ 751 .tp = &__tracepoint_##call, \ 752 }, \ 753 .event.funcs = &trace_event_type_funcs_##template, \ 754 .print_fmt = print_fmt_##template, \ 755 .flags = TRACE_EVENT_FL_TRACEPOINT, \ 756 }; \ 757 static struct trace_event_call __used \ 758 __section("_ftrace_events") *__event_##call = &event_##call 759 760 #undef DEFINE_EVENT_PRINT 761 #define DEFINE_EVENT_PRINT(template, call, proto, args, print) \ 762 \ 763 static char print_fmt_##call[] = print; \ 764 \ 765 static struct trace_event_call __used event_##call = { \ 766 .class = &event_class_##template, \ 767 { \ 768 .tp = &__tracepoint_##call, \ 769 }, \ 770 .event.funcs = &trace_event_type_funcs_##call, \ 771 .print_fmt = print_fmt_##call, \ 772 .flags = TRACE_EVENT_FL_TRACEPOINT, \ 773 }; \ 774 static struct trace_event_call __used \ 775 __section("_ftrace_events") *__event_##call = &event_##call 776 777 #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) 778
