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 36TRACE_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) \ 352static notrace enum print_line_t \ 353trace_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_event_printf(iter, print); \ 368 \ 369 return trace_handle_return(s); \ 370} \ 371static 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) \ 377static notrace enum print_line_t \ 378trace_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} \ 397static 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#define ALIGN_STRUCTFIELD(type) ((int)(__alignof__(struct {type b;}))) 404 405#undef __field_ext 406#define __field_ext(_type, _item, _filter_type) { \ 407 .type = #_type, .name = #_item, \ 408 .size = sizeof(_type), .align = ALIGN_STRUCTFIELD(_type), \ 409 .is_signed = is_signed_type(_type), .filter_type = _filter_type }, 410 411#undef __field_struct_ext 412#define __field_struct_ext(_type, _item, _filter_type) { \ 413 .type = #_type, .name = #_item, \ 414 .size = sizeof(_type), .align = ALIGN_STRUCTFIELD(_type), \ 415 0, .filter_type = _filter_type }, 416 417#undef __field 418#define __field(type, item) __field_ext(type, item, FILTER_OTHER) 419 420#undef __field_struct 421#define __field_struct(type, item) __field_struct_ext(type, item, FILTER_OTHER) 422 423#undef __array 424#define __array(_type, _item, _len) { \ 425 .type = #_type"["__stringify(_len)"]", .name = #_item, \ 426 .size = sizeof(_type[_len]), .align = ALIGN_STRUCTFIELD(_type), \ 427 .is_signed = is_signed_type(_type), .filter_type = FILTER_OTHER }, 428 429#undef __dynamic_array 430#define __dynamic_array(_type, _item, _len) { \ 431 .type = "__data_loc " #_type "[]", .name = #_item, \ 432 .size = 4, .align = 4, \ 433 .is_signed = is_signed_type(_type), .filter_type = FILTER_OTHER }, 434 435#undef __string 436#define __string(item, src) __dynamic_array(char, item, -1) 437 438#undef __bitmask 439#define __bitmask(item, nr_bits) __dynamic_array(unsigned long, item, -1) 440 441#undef DECLARE_EVENT_CLASS 442#define DECLARE_EVENT_CLASS(call, proto, args, tstruct, func, print) \ 443static struct trace_event_fields trace_event_fields_##call[] = { \ 444 tstruct \ 445 {} }; 446 447#undef DEFINE_EVENT_PRINT 448#define DEFINE_EVENT_PRINT(template, name, proto, args, print) 449 450#include TRACE_INCLUDE(TRACE_INCLUDE_FILE) 451 452/* 453 * remember the offset of each array from the beginning of the event. 454 */ 455 456#undef __entry 457#define __entry entry 458 459#undef __field 460#define __field(type, item) 461 462#undef __field_ext 463#define __field_ext(type, item, filter_type) 464 465#undef __field_struct 466#define __field_struct(type, item) 467 468#undef __field_struct_ext 469#define __field_struct_ext(type, item, filter_type) 470 471#undef __array 472#define __array(type, item, len) 473 474#undef __dynamic_array 475#define __dynamic_array(type, item, len) \ 476 __item_length = (len) * sizeof(type); \ 477 __data_offsets->item = __data_size + \ 478 offsetof(typeof(*entry), __data); \ 479 __data_offsets->item |= __item_length << 16; \ 480 __data_size += __item_length; 481 482#undef __string 483#define __string(item, src) __dynamic_array(char, item, \ 484 strlen((src) ? (const char *)(src) : "(null)") + 1) 485 486/* 487 * __bitmask_size_in_bytes_raw is the number of bytes needed to hold 488 * num_possible_cpus(). 489 */ 490#define __bitmask_size_in_bytes_raw(nr_bits) \ 491 (((nr_bits) + 7) / 8) 492 493#define __bitmask_size_in_longs(nr_bits) \ 494 ((__bitmask_size_in_bytes_raw(nr_bits) + \ 495 ((BITS_PER_LONG / 8) - 1)) / (BITS_PER_LONG / 8)) 496 497/* 498 * __bitmask_size_in_bytes is the number of bytes needed to hold 499 * num_possible_cpus() padded out to the nearest long. This is what 500 * is saved in the buffer, just to be consistent. 501 */ 502#define __bitmask_size_in_bytes(nr_bits) \ 503 (__bitmask_size_in_longs(nr_bits) * (BITS_PER_LONG / 8)) 504 505#undef __bitmask 506#define __bitmask(item, nr_bits) __dynamic_array(unsigned long, item, \ 507 __bitmask_size_in_longs(nr_bits)) 508 509#undef DECLARE_EVENT_CLASS 510#define DECLARE_EVENT_CLASS(call, proto, args, tstruct, assign, print) \ 511static inline notrace int trace_event_get_offsets_##call( \ 512 struct trace_event_data_offsets_##call *__data_offsets, proto) \ 513{ \ 514 int __data_size = 0; \ 515 int __maybe_unused __item_length; \ 516 struct trace_event_raw_##call __maybe_unused *entry; \ 517 \ 518 tstruct; \ 519 \ 520 return __data_size; \ 521} 522 523#include TRACE_INCLUDE(TRACE_INCLUDE_FILE) 524 525/* 526 * Stage 4 of the trace events. 527 * 528 * Override the macros in the event tracepoint header <trace/events/XXX.h> 529 * to include the following: 530 * 531 * For those macros defined with TRACE_EVENT: 532 * 533 * static struct trace_event_call event_<call>; 534 * 535 * static void trace_event_raw_event_<call>(void *__data, proto) 536 * { 537 * struct trace_event_file *trace_file = __data; 538 * struct trace_event_call *event_call = trace_file->event_call; 539 * struct trace_event_data_offsets_<call> __maybe_unused __data_offsets; 540 * unsigned long eflags = trace_file->flags; 541 * enum event_trigger_type __tt = ETT_NONE; 542 * struct ring_buffer_event *event; 543 * struct trace_event_raw_<call> *entry; <-- defined in stage 1 544 * struct trace_buffer *buffer; 545 * unsigned long irq_flags; 546 * int __data_size; 547 * int pc; 548 * 549 * if (!(eflags & EVENT_FILE_FL_TRIGGER_COND)) { 550 * if (eflags & EVENT_FILE_FL_TRIGGER_MODE) 551 * event_triggers_call(trace_file, NULL); 552 * if (eflags & EVENT_FILE_FL_SOFT_DISABLED) 553 * return; 554 * } 555 * 556 * local_save_flags(irq_flags); 557 * pc = preempt_count(); 558 * 559 * __data_size = trace_event_get_offsets_<call>(&__data_offsets, args); 560 * 561 * event = trace_event_buffer_lock_reserve(&buffer, trace_file, 562 * event_<call>->event.type, 563 * sizeof(*entry) + __data_size, 564 * irq_flags, pc); 565 * if (!event) 566 * return; 567 * entry = ring_buffer_event_data(event); 568 * 569 * { <assign>; } <-- Here we assign the entries by the __field and 570 * __array macros. 571 * 572 * if (eflags & EVENT_FILE_FL_TRIGGER_COND) 573 * __tt = event_triggers_call(trace_file, entry); 574 * 575 * if (test_bit(EVENT_FILE_FL_SOFT_DISABLED_BIT, 576 * &trace_file->flags)) 577 * ring_buffer_discard_commit(buffer, event); 578 * else if (!filter_check_discard(trace_file, entry, buffer, event)) 579 * trace_buffer_unlock_commit(buffer, event, irq_flags, pc); 580 * 581 * if (__tt) 582 * event_triggers_post_call(trace_file, __tt); 583 * } 584 * 585 * static struct trace_event ftrace_event_type_<call> = { 586 * .trace = trace_raw_output_<call>, <-- stage 2 587 * }; 588 * 589 * static char print_fmt_<call>[] = <TP_printk>; 590 * 591 * static struct trace_event_class __used event_class_<template> = { 592 * .system = "<system>", 593 * .fields_array = trace_event_fields_<call>, 594 * .fields = LIST_HEAD_INIT(event_class_##call.fields), 595 * .raw_init = trace_event_raw_init, 596 * .probe = trace_event_raw_event_##call, 597 * .reg = trace_event_reg, 598 * }; 599 * 600 * static struct trace_event_call event_<call> = { 601 * .class = event_class_<template>, 602 * { 603 * .tp = &__tracepoint_<call>, 604 * }, 605 * .event = &ftrace_event_type_<call>, 606 * .print_fmt = print_fmt_<call>, 607 * .flags = TRACE_EVENT_FL_TRACEPOINT, 608 * }; 609 * // its only safe to use pointers when doing linker tricks to 610 * // create an array. 611 * static struct trace_event_call __used 612 * __section("_ftrace_events") *__event_<call> = &event_<call>; 613 * 614 */ 615 616#ifdef CONFIG_PERF_EVENTS 617 618#define _TRACE_PERF_PROTO(call, proto) \ 619 static notrace void \ 620 perf_trace_##call(void *__data, proto); 621 622#define _TRACE_PERF_INIT(call) \ 623 .perf_probe = perf_trace_##call, 624 625#else 626#define _TRACE_PERF_PROTO(call, proto) 627#define _TRACE_PERF_INIT(call) 628#endif /* CONFIG_PERF_EVENTS */ 629 630#undef __entry 631#define __entry entry 632 633#undef __field 634#define __field(type, item) 635 636#undef __field_struct 637#define __field_struct(type, item) 638 639#undef __array 640#define __array(type, item, len) 641 642#undef __dynamic_array 643#define __dynamic_array(type, item, len) \ 644 __entry->__data_loc_##item = __data_offsets.item; 645 646#undef __string 647#define __string(item, src) __dynamic_array(char, item, -1) 648 649#undef __assign_str 650#define __assign_str(dst, src) \ 651 strcpy(__get_str(dst), (src) ? (const char *)(src) : "(null)"); 652 653#undef __bitmask 654#define __bitmask(item, nr_bits) __dynamic_array(unsigned long, item, -1) 655 656#undef __get_bitmask 657#define __get_bitmask(field) (char *)__get_dynamic_array(field) 658 659#undef __assign_bitmask 660#define __assign_bitmask(dst, src, nr_bits) \ 661 memcpy(__get_bitmask(dst), (src), __bitmask_size_in_bytes(nr_bits)) 662 663#undef TP_fast_assign 664#define TP_fast_assign(args...) args 665 666#undef __perf_count 667#define __perf_count(c) (c) 668 669#undef __perf_task 670#define __perf_task(t) (t) 671 672#undef DECLARE_EVENT_CLASS 673#define DECLARE_EVENT_CLASS(call, proto, args, tstruct, assign, print) \ 674 \ 675static notrace void \ 676trace_event_raw_event_##call(void *__data, proto) \ 677{ \ 678 struct trace_event_file *trace_file = __data; \ 679 struct trace_event_data_offsets_##call __maybe_unused __data_offsets;\ 680 struct trace_event_buffer fbuffer; \ 681 struct trace_event_raw_##call *entry; \ 682 int __data_size; \ 683 \ 684 if (trace_trigger_soft_disabled(trace_file)) \ 685 return; \ 686 \ 687 __data_size = trace_event_get_offsets_##call(&__data_offsets, args); \ 688 \ 689 entry = trace_event_buffer_reserve(&fbuffer, trace_file, \ 690 sizeof(*entry) + __data_size); \ 691 \ 692 if (!entry) \ 693 return; \ 694 \ 695 tstruct \ 696 \ 697 { assign; } \ 698 \ 699 trace_event_buffer_commit(&fbuffer); \ 700} 701/* 702 * The ftrace_test_probe is compiled out, it is only here as a build time check 703 * to make sure that if the tracepoint handling changes, the ftrace probe will 704 * fail to compile unless it too is updated. 705 */ 706 707#undef DEFINE_EVENT 708#define DEFINE_EVENT(template, call, proto, args) \ 709static inline void ftrace_test_probe_##call(void) \ 710{ \ 711 check_trace_callback_type_##call(trace_event_raw_event_##template); \ 712} 713 714#include TRACE_INCLUDE(TRACE_INCLUDE_FILE) 715 716#undef __entry 717#define __entry REC 718 719#undef __print_flags 720#undef __print_symbolic 721#undef __print_hex 722#undef __print_hex_str 723#undef __get_dynamic_array 724#undef __get_dynamic_array_len 725#undef __get_str 726#undef __get_bitmask 727#undef __print_array 728#undef __print_hex_dump 729 730#undef TP_printk 731#define TP_printk(fmt, args...) "\"" fmt "\", " __stringify(args) 732 733#undef DECLARE_EVENT_CLASS 734#define DECLARE_EVENT_CLASS(call, proto, args, tstruct, assign, print) \ 735_TRACE_PERF_PROTO(call, PARAMS(proto)); \ 736static char print_fmt_##call[] = print; \ 737static struct trace_event_class __used __refdata event_class_##call = { \ 738 .system = TRACE_SYSTEM_STRING, \ 739 .fields_array = trace_event_fields_##call, \ 740 .fields = LIST_HEAD_INIT(event_class_##call.fields),\ 741 .raw_init = trace_event_raw_init, \ 742 .probe = trace_event_raw_event_##call, \ 743 .reg = trace_event_reg, \ 744 _TRACE_PERF_INIT(call) \ 745}; 746 747#undef DEFINE_EVENT 748#define DEFINE_EVENT(template, call, proto, args) \ 749 \ 750static struct trace_event_call __used event_##call = { \ 751 .class = &event_class_##template, \ 752 { \ 753 .tp = &__tracepoint_##call, \ 754 }, \ 755 .event.funcs = &trace_event_type_funcs_##template, \ 756 .print_fmt = print_fmt_##template, \ 757 .flags = TRACE_EVENT_FL_TRACEPOINT, \ 758}; \ 759static struct trace_event_call __used \ 760__section("_ftrace_events") *__event_##call = &event_##call 761 762#undef DEFINE_EVENT_PRINT 763#define DEFINE_EVENT_PRINT(template, call, proto, args, print) \ 764 \ 765static char print_fmt_##call[] = print; \ 766 \ 767static struct trace_event_call __used event_##call = { \ 768 .class = &event_class_##template, \ 769 { \ 770 .tp = &__tracepoint_##call, \ 771 }, \ 772 .event.funcs = &trace_event_type_funcs_##call, \ 773 .print_fmt = print_fmt_##call, \ 774 .flags = TRACE_EVENT_FL_TRACEPOINT, \ 775}; \ 776static struct trace_event_call __used \ 777__section("_ftrace_events") *__event_##call = &event_##call 778 779#include TRACE_INCLUDE(TRACE_INCLUDE_FILE) 780