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