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