1/* 2 * Copyright (C) 2009, 2010 Red Hat Inc, Steven Rostedt <srostedt@redhat.com> 3 * 4 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 5 * This program is free software; you can redistribute it and/or 6 * modify it under the terms of the GNU Lesser General Public 7 * License as published by the Free Software Foundation; 8 * version 2.1 of the License (not later!) 9 * 10 * This program is distributed in the hope that it will be useful, 11 * but WITHOUT ANY WARRANTY; without even the implied warranty of 12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 13 * GNU Lesser General Public License for more details. 14 * 15 * You should have received a copy of the GNU Lesser General Public 16 * License along with this program; if not, see <http://www.gnu.org/licenses> 17 * 18 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 19 */ 20#ifndef _PARSE_EVENTS_H 21#define _PARSE_EVENTS_H 22 23#include <stdbool.h> 24#include <stdarg.h> 25#include <stdio.h> 26#include <regex.h> 27#include <string.h> 28 29#ifndef __maybe_unused 30#define __maybe_unused __attribute__((unused)) 31#endif 32 33/* ----------------------- trace_seq ----------------------- */ 34 35 36#ifndef TRACE_SEQ_BUF_SIZE 37#define TRACE_SEQ_BUF_SIZE 4096 38#endif 39 40#ifndef DEBUG_RECORD 41#define DEBUG_RECORD 0 42#endif 43 44struct pevent_record { 45 unsigned long long ts; 46 unsigned long long offset; 47 long long missed_events; /* buffer dropped events before */ 48 int record_size; /* size of binary record */ 49 int size; /* size of data */ 50 void *data; 51 int cpu; 52 int ref_count; 53 int locked; /* Do not free, even if ref_count is zero */ 54 void *priv; 55#if DEBUG_RECORD 56 struct pevent_record *prev; 57 struct pevent_record *next; 58 long alloc_addr; 59#endif 60}; 61 62enum trace_seq_fail { 63 TRACE_SEQ__GOOD, 64 TRACE_SEQ__BUFFER_POISONED, 65 TRACE_SEQ__MEM_ALLOC_FAILED, 66}; 67 68/* 69 * Trace sequences are used to allow a function to call several other functions 70 * to create a string of data to use (up to a max of PAGE_SIZE). 71 */ 72 73struct trace_seq { 74 char *buffer; 75 unsigned int buffer_size; 76 unsigned int len; 77 unsigned int readpos; 78 enum trace_seq_fail state; 79}; 80 81void trace_seq_init(struct trace_seq *s); 82void trace_seq_reset(struct trace_seq *s); 83void trace_seq_destroy(struct trace_seq *s); 84 85extern int trace_seq_printf(struct trace_seq *s, const char *fmt, ...) 86 __attribute__ ((format (printf, 2, 3))); 87extern int trace_seq_vprintf(struct trace_seq *s, const char *fmt, va_list args) 88 __attribute__ ((format (printf, 2, 0))); 89 90extern int trace_seq_puts(struct trace_seq *s, const char *str); 91extern int trace_seq_putc(struct trace_seq *s, unsigned char c); 92 93extern void trace_seq_terminate(struct trace_seq *s); 94 95extern int trace_seq_do_fprintf(struct trace_seq *s, FILE *fp); 96extern int trace_seq_do_printf(struct trace_seq *s); 97 98 99/* ----------------------- pevent ----------------------- */ 100 101struct pevent; 102struct event_format; 103 104typedef int (*pevent_event_handler_func)(struct trace_seq *s, 105 struct pevent_record *record, 106 struct event_format *event, 107 void *context); 108 109typedef int (*pevent_plugin_load_func)(struct pevent *pevent); 110typedef int (*pevent_plugin_unload_func)(struct pevent *pevent); 111 112struct pevent_plugin_option { 113 struct pevent_plugin_option *next; 114 void *handle; 115 char *file; 116 char *name; 117 char *plugin_alias; 118 char *description; 119 const char *value; 120 void *priv; 121 int set; 122}; 123 124/* 125 * Plugin hooks that can be called: 126 * 127 * PEVENT_PLUGIN_LOADER: (required) 128 * The function name to initialized the plugin. 129 * 130 * int PEVENT_PLUGIN_LOADER(struct pevent *pevent) 131 * 132 * PEVENT_PLUGIN_UNLOADER: (optional) 133 * The function called just before unloading 134 * 135 * int PEVENT_PLUGIN_UNLOADER(struct pevent *pevent) 136 * 137 * PEVENT_PLUGIN_OPTIONS: (optional) 138 * Plugin options that can be set before loading 139 * 140 * struct pevent_plugin_option PEVENT_PLUGIN_OPTIONS[] = { 141 * { 142 * .name = "option-name", 143 * .plugin_alias = "overide-file-name", (optional) 144 * .description = "description of option to show users", 145 * }, 146 * { 147 * .name = NULL, 148 * }, 149 * }; 150 * 151 * Array must end with .name = NULL; 152 * 153 * 154 * .plugin_alias is used to give a shorter name to access 155 * the vairable. Useful if a plugin handles more than one event. 156 * 157 * If .value is not set, then it is considered a boolean and only 158 * .set will be processed. If .value is defined, then it is considered 159 * a string option and .set will be ignored. 160 * 161 * PEVENT_PLUGIN_ALIAS: (optional) 162 * The name to use for finding options (uses filename if not defined) 163 */ 164#define PEVENT_PLUGIN_LOADER pevent_plugin_loader 165#define PEVENT_PLUGIN_UNLOADER pevent_plugin_unloader 166#define PEVENT_PLUGIN_OPTIONS pevent_plugin_options 167#define PEVENT_PLUGIN_ALIAS pevent_plugin_alias 168#define _MAKE_STR(x) #x 169#define MAKE_STR(x) _MAKE_STR(x) 170#define PEVENT_PLUGIN_LOADER_NAME MAKE_STR(PEVENT_PLUGIN_LOADER) 171#define PEVENT_PLUGIN_UNLOADER_NAME MAKE_STR(PEVENT_PLUGIN_UNLOADER) 172#define PEVENT_PLUGIN_OPTIONS_NAME MAKE_STR(PEVENT_PLUGIN_OPTIONS) 173#define PEVENT_PLUGIN_ALIAS_NAME MAKE_STR(PEVENT_PLUGIN_ALIAS) 174 175#define NSECS_PER_SEC 1000000000ULL 176#define NSECS_PER_USEC 1000ULL 177 178enum format_flags { 179 FIELD_IS_ARRAY = 1, 180 FIELD_IS_POINTER = 2, 181 FIELD_IS_SIGNED = 4, 182 FIELD_IS_STRING = 8, 183 FIELD_IS_DYNAMIC = 16, 184 FIELD_IS_LONG = 32, 185 FIELD_IS_FLAG = 64, 186 FIELD_IS_SYMBOLIC = 128, 187}; 188 189struct format_field { 190 struct format_field *next; 191 struct event_format *event; 192 char *type; 193 char *name; 194 int offset; 195 int size; 196 unsigned int arraylen; 197 unsigned int elementsize; 198 unsigned long flags; 199}; 200 201struct format { 202 int nr_common; 203 int nr_fields; 204 struct format_field *common_fields; 205 struct format_field *fields; 206}; 207 208struct print_arg_atom { 209 char *atom; 210}; 211 212struct print_arg_string { 213 char *string; 214 int offset; 215}; 216 217struct print_arg_bitmask { 218 char *bitmask; 219 int offset; 220}; 221 222struct print_arg_field { 223 char *name; 224 struct format_field *field; 225}; 226 227struct print_flag_sym { 228 struct print_flag_sym *next; 229 char *value; 230 char *str; 231}; 232 233struct print_arg_typecast { 234 char *type; 235 struct print_arg *item; 236}; 237 238struct print_arg_flags { 239 struct print_arg *field; 240 char *delim; 241 struct print_flag_sym *flags; 242}; 243 244struct print_arg_symbol { 245 struct print_arg *field; 246 struct print_flag_sym *symbols; 247}; 248 249struct print_arg_hex { 250 struct print_arg *field; 251 struct print_arg *size; 252}; 253 254struct print_arg_int_array { 255 struct print_arg *field; 256 struct print_arg *count; 257 struct print_arg *el_size; 258}; 259 260struct print_arg_dynarray { 261 struct format_field *field; 262 struct print_arg *index; 263}; 264 265struct print_arg; 266 267struct print_arg_op { 268 char *op; 269 int prio; 270 struct print_arg *left; 271 struct print_arg *right; 272}; 273 274struct pevent_function_handler; 275 276struct print_arg_func { 277 struct pevent_function_handler *func; 278 struct print_arg *args; 279}; 280 281enum print_arg_type { 282 PRINT_NULL, 283 PRINT_ATOM, 284 PRINT_FIELD, 285 PRINT_FLAGS, 286 PRINT_SYMBOL, 287 PRINT_HEX, 288 PRINT_INT_ARRAY, 289 PRINT_TYPE, 290 PRINT_STRING, 291 PRINT_BSTRING, 292 PRINT_DYNAMIC_ARRAY, 293 PRINT_OP, 294 PRINT_FUNC, 295 PRINT_BITMASK, 296}; 297 298struct print_arg { 299 struct print_arg *next; 300 enum print_arg_type type; 301 union { 302 struct print_arg_atom atom; 303 struct print_arg_field field; 304 struct print_arg_typecast typecast; 305 struct print_arg_flags flags; 306 struct print_arg_symbol symbol; 307 struct print_arg_hex hex; 308 struct print_arg_int_array int_array; 309 struct print_arg_func func; 310 struct print_arg_string string; 311 struct print_arg_bitmask bitmask; 312 struct print_arg_op op; 313 struct print_arg_dynarray dynarray; 314 }; 315}; 316 317struct print_fmt { 318 char *format; 319 struct print_arg *args; 320}; 321 322struct event_format { 323 struct pevent *pevent; 324 char *name; 325 int id; 326 int flags; 327 struct format format; 328 struct print_fmt print_fmt; 329 char *system; 330 pevent_event_handler_func handler; 331 void *context; 332}; 333 334enum { 335 EVENT_FL_ISFTRACE = 0x01, 336 EVENT_FL_ISPRINT = 0x02, 337 EVENT_FL_ISBPRINT = 0x04, 338 EVENT_FL_ISFUNCENT = 0x10, 339 EVENT_FL_ISFUNCRET = 0x20, 340 EVENT_FL_NOHANDLE = 0x40, 341 EVENT_FL_PRINTRAW = 0x80, 342 343 EVENT_FL_FAILED = 0x80000000 344}; 345 346enum event_sort_type { 347 EVENT_SORT_ID, 348 EVENT_SORT_NAME, 349 EVENT_SORT_SYSTEM, 350}; 351 352enum event_type { 353 EVENT_ERROR, 354 EVENT_NONE, 355 EVENT_SPACE, 356 EVENT_NEWLINE, 357 EVENT_OP, 358 EVENT_DELIM, 359 EVENT_ITEM, 360 EVENT_DQUOTE, 361 EVENT_SQUOTE, 362}; 363 364typedef unsigned long long (*pevent_func_handler)(struct trace_seq *s, 365 unsigned long long *args); 366 367enum pevent_func_arg_type { 368 PEVENT_FUNC_ARG_VOID, 369 PEVENT_FUNC_ARG_INT, 370 PEVENT_FUNC_ARG_LONG, 371 PEVENT_FUNC_ARG_STRING, 372 PEVENT_FUNC_ARG_PTR, 373 PEVENT_FUNC_ARG_MAX_TYPES 374}; 375 376enum pevent_flag { 377 PEVENT_NSEC_OUTPUT = 1, /* output in NSECS */ 378 PEVENT_DISABLE_SYS_PLUGINS = 1 << 1, 379 PEVENT_DISABLE_PLUGINS = 1 << 2, 380}; 381 382#define PEVENT_ERRORS \ 383 _PE(MEM_ALLOC_FAILED, "failed to allocate memory"), \ 384 _PE(PARSE_EVENT_FAILED, "failed to parse event"), \ 385 _PE(READ_ID_FAILED, "failed to read event id"), \ 386 _PE(READ_FORMAT_FAILED, "failed to read event format"), \ 387 _PE(READ_PRINT_FAILED, "failed to read event print fmt"), \ 388 _PE(OLD_FTRACE_ARG_FAILED,"failed to allocate field name for ftrace"),\ 389 _PE(INVALID_ARG_TYPE, "invalid argument type"), \ 390 _PE(INVALID_EXP_TYPE, "invalid expression type"), \ 391 _PE(INVALID_OP_TYPE, "invalid operator type"), \ 392 _PE(INVALID_EVENT_NAME, "invalid event name"), \ 393 _PE(EVENT_NOT_FOUND, "no event found"), \ 394 _PE(SYNTAX_ERROR, "syntax error"), \ 395 _PE(ILLEGAL_RVALUE, "illegal rvalue"), \ 396 _PE(ILLEGAL_LVALUE, "illegal lvalue for string comparison"), \ 397 _PE(INVALID_REGEX, "regex did not compute"), \ 398 _PE(ILLEGAL_STRING_CMP, "illegal comparison for string"), \ 399 _PE(ILLEGAL_INTEGER_CMP,"illegal comparison for integer"), \ 400 _PE(REPARENT_NOT_OP, "cannot reparent other than OP"), \ 401 _PE(REPARENT_FAILED, "failed to reparent filter OP"), \ 402 _PE(BAD_FILTER_ARG, "bad arg in filter tree"), \ 403 _PE(UNEXPECTED_TYPE, "unexpected type (not a value)"), \ 404 _PE(ILLEGAL_TOKEN, "illegal token"), \ 405 _PE(INVALID_PAREN, "open parenthesis cannot come here"), \ 406 _PE(UNBALANCED_PAREN, "unbalanced number of parenthesis"), \ 407 _PE(UNKNOWN_TOKEN, "unknown token"), \ 408 _PE(FILTER_NOT_FOUND, "no filter found"), \ 409 _PE(NOT_A_NUMBER, "must have number field"), \ 410 _PE(NO_FILTER, "no filters exists"), \ 411 _PE(FILTER_MISS, "record does not match to filter") 412 413#undef _PE 414#define _PE(__code, __str) PEVENT_ERRNO__ ## __code 415enum pevent_errno { 416 PEVENT_ERRNO__SUCCESS = 0, 417 PEVENT_ERRNO__FILTER_MATCH = PEVENT_ERRNO__SUCCESS, 418 419 /* 420 * Choose an arbitrary negative big number not to clash with standard 421 * errno since SUS requires the errno has distinct positive values. 422 * See 'Issue 6' in the link below. 423 * 424 * http://pubs.opengroup.org/onlinepubs/9699919799/basedefs/errno.h.html 425 */ 426 __PEVENT_ERRNO__START = -100000, 427 428 PEVENT_ERRORS, 429 430 __PEVENT_ERRNO__END, 431}; 432#undef _PE 433 434struct plugin_list; 435 436#define INVALID_PLUGIN_LIST_OPTION ((char **)((unsigned long)-1)) 437 438struct plugin_list *traceevent_load_plugins(struct pevent *pevent); 439void traceevent_unload_plugins(struct plugin_list *plugin_list, 440 struct pevent *pevent); 441char **traceevent_plugin_list_options(void); 442void traceevent_plugin_free_options_list(char **list); 443int traceevent_plugin_add_options(const char *name, 444 struct pevent_plugin_option *options); 445void traceevent_plugin_remove_options(struct pevent_plugin_option *options); 446void traceevent_print_plugins(struct trace_seq *s, 447 const char *prefix, const char *suffix, 448 const struct plugin_list *list); 449 450struct cmdline; 451struct cmdline_list; 452struct func_map; 453struct func_list; 454struct event_handler; 455 456struct pevent { 457 int ref_count; 458 459 int header_page_ts_offset; 460 int header_page_ts_size; 461 int header_page_size_offset; 462 int header_page_size_size; 463 int header_page_data_offset; 464 int header_page_data_size; 465 int header_page_overwrite; 466 467 int file_bigendian; 468 int host_bigendian; 469 470 int latency_format; 471 472 int old_format; 473 474 int cpus; 475 int long_size; 476 int page_size; 477 478 struct cmdline *cmdlines; 479 struct cmdline_list *cmdlist; 480 int cmdline_count; 481 482 struct func_map *func_map; 483 struct func_list *funclist; 484 unsigned int func_count; 485 486 struct printk_map *printk_map; 487 struct printk_list *printklist; 488 unsigned int printk_count; 489 490 491 struct event_format **events; 492 int nr_events; 493 struct event_format **sort_events; 494 enum event_sort_type last_type; 495 496 int type_offset; 497 int type_size; 498 499 int pid_offset; 500 int pid_size; 501 502 int pc_offset; 503 int pc_size; 504 505 int flags_offset; 506 int flags_size; 507 508 int ld_offset; 509 int ld_size; 510 511 int print_raw; 512 513 int test_filters; 514 515 int flags; 516 517 struct format_field *bprint_ip_field; 518 struct format_field *bprint_fmt_field; 519 struct format_field *bprint_buf_field; 520 521 struct event_handler *handlers; 522 struct pevent_function_handler *func_handlers; 523 524 /* cache */ 525 struct event_format *last_event; 526 527 char *trace_clock; 528}; 529 530static inline void pevent_set_flag(struct pevent *pevent, int flag) 531{ 532 pevent->flags |= flag; 533} 534 535static inline unsigned short 536__data2host2(struct pevent *pevent, unsigned short data) 537{ 538 unsigned short swap; 539 540 if (pevent->host_bigendian == pevent->file_bigendian) 541 return data; 542 543 swap = ((data & 0xffULL) << 8) | 544 ((data & (0xffULL << 8)) >> 8); 545 546 return swap; 547} 548 549static inline unsigned int 550__data2host4(struct pevent *pevent, unsigned int data) 551{ 552 unsigned int swap; 553 554 if (pevent->host_bigendian == pevent->file_bigendian) 555 return data; 556 557 swap = ((data & 0xffULL) << 24) | 558 ((data & (0xffULL << 8)) << 8) | 559 ((data & (0xffULL << 16)) >> 8) | 560 ((data & (0xffULL << 24)) >> 24); 561 562 return swap; 563} 564 565static inline unsigned long long 566__data2host8(struct pevent *pevent, unsigned long long data) 567{ 568 unsigned long long swap; 569 570 if (pevent->host_bigendian == pevent->file_bigendian) 571 return data; 572 573 swap = ((data & 0xffULL) << 56) | 574 ((data & (0xffULL << 8)) << 40) | 575 ((data & (0xffULL << 16)) << 24) | 576 ((data & (0xffULL << 24)) << 8) | 577 ((data & (0xffULL << 32)) >> 8) | 578 ((data & (0xffULL << 40)) >> 24) | 579 ((data & (0xffULL << 48)) >> 40) | 580 ((data & (0xffULL << 56)) >> 56); 581 582 return swap; 583} 584 585#define data2host2(pevent, ptr) __data2host2(pevent, *(unsigned short *)(ptr)) 586#define data2host4(pevent, ptr) __data2host4(pevent, *(unsigned int *)(ptr)) 587#define data2host8(pevent, ptr) \ 588({ \ 589 unsigned long long __val; \ 590 \ 591 memcpy(&__val, (ptr), sizeof(unsigned long long)); \ 592 __data2host8(pevent, __val); \ 593}) 594 595static inline int traceevent_host_bigendian(void) 596{ 597 unsigned char str[] = { 0x1, 0x2, 0x3, 0x4 }; 598 unsigned int val; 599 600 memcpy(&val, str, 4); 601 return val == 0x01020304; 602} 603 604/* taken from kernel/trace/trace.h */ 605enum trace_flag_type { 606 TRACE_FLAG_IRQS_OFF = 0x01, 607 TRACE_FLAG_IRQS_NOSUPPORT = 0x02, 608 TRACE_FLAG_NEED_RESCHED = 0x04, 609 TRACE_FLAG_HARDIRQ = 0x08, 610 TRACE_FLAG_SOFTIRQ = 0x10, 611}; 612 613int pevent_register_comm(struct pevent *pevent, const char *comm, int pid); 614int pevent_register_trace_clock(struct pevent *pevent, const char *trace_clock); 615int pevent_register_function(struct pevent *pevent, char *name, 616 unsigned long long addr, char *mod); 617int pevent_register_print_string(struct pevent *pevent, const char *fmt, 618 unsigned long long addr); 619int pevent_pid_is_registered(struct pevent *pevent, int pid); 620 621void pevent_print_event(struct pevent *pevent, struct trace_seq *s, 622 struct pevent_record *record, bool use_trace_clock); 623 624int pevent_parse_header_page(struct pevent *pevent, char *buf, unsigned long size, 625 int long_size); 626 627enum pevent_errno pevent_parse_event(struct pevent *pevent, const char *buf, 628 unsigned long size, const char *sys); 629enum pevent_errno pevent_parse_format(struct pevent *pevent, 630 struct event_format **eventp, 631 const char *buf, 632 unsigned long size, const char *sys); 633void pevent_free_format(struct event_format *event); 634void pevent_free_format_field(struct format_field *field); 635 636void *pevent_get_field_raw(struct trace_seq *s, struct event_format *event, 637 const char *name, struct pevent_record *record, 638 int *len, int err); 639 640int pevent_get_field_val(struct trace_seq *s, struct event_format *event, 641 const char *name, struct pevent_record *record, 642 unsigned long long *val, int err); 643int pevent_get_common_field_val(struct trace_seq *s, struct event_format *event, 644 const char *name, struct pevent_record *record, 645 unsigned long long *val, int err); 646int pevent_get_any_field_val(struct trace_seq *s, struct event_format *event, 647 const char *name, struct pevent_record *record, 648 unsigned long long *val, int err); 649 650int pevent_print_num_field(struct trace_seq *s, const char *fmt, 651 struct event_format *event, const char *name, 652 struct pevent_record *record, int err); 653 654int pevent_print_func_field(struct trace_seq *s, const char *fmt, 655 struct event_format *event, const char *name, 656 struct pevent_record *record, int err); 657 658int pevent_register_event_handler(struct pevent *pevent, int id, 659 const char *sys_name, const char *event_name, 660 pevent_event_handler_func func, void *context); 661int pevent_unregister_event_handler(struct pevent *pevent, int id, 662 const char *sys_name, const char *event_name, 663 pevent_event_handler_func func, void *context); 664int pevent_register_print_function(struct pevent *pevent, 665 pevent_func_handler func, 666 enum pevent_func_arg_type ret_type, 667 char *name, ...); 668int pevent_unregister_print_function(struct pevent *pevent, 669 pevent_func_handler func, char *name); 670 671struct format_field *pevent_find_common_field(struct event_format *event, const char *name); 672struct format_field *pevent_find_field(struct event_format *event, const char *name); 673struct format_field *pevent_find_any_field(struct event_format *event, const char *name); 674 675const char *pevent_find_function(struct pevent *pevent, unsigned long long addr); 676unsigned long long 677pevent_find_function_address(struct pevent *pevent, unsigned long long addr); 678unsigned long long pevent_read_number(struct pevent *pevent, const void *ptr, int size); 679int pevent_read_number_field(struct format_field *field, const void *data, 680 unsigned long long *value); 681 682struct event_format *pevent_find_event(struct pevent *pevent, int id); 683 684struct event_format * 685pevent_find_event_by_name(struct pevent *pevent, const char *sys, const char *name); 686 687void pevent_data_lat_fmt(struct pevent *pevent, 688 struct trace_seq *s, struct pevent_record *record); 689int pevent_data_type(struct pevent *pevent, struct pevent_record *rec); 690struct event_format *pevent_data_event_from_type(struct pevent *pevent, int type); 691int pevent_data_pid(struct pevent *pevent, struct pevent_record *rec); 692const char *pevent_data_comm_from_pid(struct pevent *pevent, int pid); 693struct cmdline; 694struct cmdline *pevent_data_pid_from_comm(struct pevent *pevent, const char *comm, 695 struct cmdline *next); 696int pevent_cmdline_pid(struct pevent *pevent, struct cmdline *cmdline); 697 698void pevent_event_info(struct trace_seq *s, struct event_format *event, 699 struct pevent_record *record); 700int pevent_strerror(struct pevent *pevent, enum pevent_errno errnum, 701 char *buf, size_t buflen); 702 703struct event_format **pevent_list_events(struct pevent *pevent, enum event_sort_type); 704struct format_field **pevent_event_common_fields(struct event_format *event); 705struct format_field **pevent_event_fields(struct event_format *event); 706 707static inline int pevent_get_cpus(struct pevent *pevent) 708{ 709 return pevent->cpus; 710} 711 712static inline void pevent_set_cpus(struct pevent *pevent, int cpus) 713{ 714 pevent->cpus = cpus; 715} 716 717static inline int pevent_get_long_size(struct pevent *pevent) 718{ 719 return pevent->long_size; 720} 721 722static inline void pevent_set_long_size(struct pevent *pevent, int long_size) 723{ 724 pevent->long_size = long_size; 725} 726 727static inline int pevent_get_page_size(struct pevent *pevent) 728{ 729 return pevent->page_size; 730} 731 732static inline void pevent_set_page_size(struct pevent *pevent, int _page_size) 733{ 734 pevent->page_size = _page_size; 735} 736 737static inline int pevent_is_file_bigendian(struct pevent *pevent) 738{ 739 return pevent->file_bigendian; 740} 741 742static inline void pevent_set_file_bigendian(struct pevent *pevent, int endian) 743{ 744 pevent->file_bigendian = endian; 745} 746 747static inline int pevent_is_host_bigendian(struct pevent *pevent) 748{ 749 return pevent->host_bigendian; 750} 751 752static inline void pevent_set_host_bigendian(struct pevent *pevent, int endian) 753{ 754 pevent->host_bigendian = endian; 755} 756 757static inline int pevent_is_latency_format(struct pevent *pevent) 758{ 759 return pevent->latency_format; 760} 761 762static inline void pevent_set_latency_format(struct pevent *pevent, int lat) 763{ 764 pevent->latency_format = lat; 765} 766 767struct pevent *pevent_alloc(void); 768void pevent_free(struct pevent *pevent); 769void pevent_ref(struct pevent *pevent); 770void pevent_unref(struct pevent *pevent); 771 772/* access to the internal parser */ 773void pevent_buffer_init(const char *buf, unsigned long long size); 774enum event_type pevent_read_token(char **tok); 775void pevent_free_token(char *token); 776int pevent_peek_char(void); 777const char *pevent_get_input_buf(void); 778unsigned long long pevent_get_input_buf_ptr(void); 779 780/* for debugging */ 781void pevent_print_funcs(struct pevent *pevent); 782void pevent_print_printk(struct pevent *pevent); 783 784/* ----------------------- filtering ----------------------- */ 785 786enum filter_boolean_type { 787 FILTER_FALSE, 788 FILTER_TRUE, 789}; 790 791enum filter_op_type { 792 FILTER_OP_AND = 1, 793 FILTER_OP_OR, 794 FILTER_OP_NOT, 795}; 796 797enum filter_cmp_type { 798 FILTER_CMP_NONE, 799 FILTER_CMP_EQ, 800 FILTER_CMP_NE, 801 FILTER_CMP_GT, 802 FILTER_CMP_LT, 803 FILTER_CMP_GE, 804 FILTER_CMP_LE, 805 FILTER_CMP_MATCH, 806 FILTER_CMP_NOT_MATCH, 807 FILTER_CMP_REGEX, 808 FILTER_CMP_NOT_REGEX, 809}; 810 811enum filter_exp_type { 812 FILTER_EXP_NONE, 813 FILTER_EXP_ADD, 814 FILTER_EXP_SUB, 815 FILTER_EXP_MUL, 816 FILTER_EXP_DIV, 817 FILTER_EXP_MOD, 818 FILTER_EXP_RSHIFT, 819 FILTER_EXP_LSHIFT, 820 FILTER_EXP_AND, 821 FILTER_EXP_OR, 822 FILTER_EXP_XOR, 823 FILTER_EXP_NOT, 824}; 825 826enum filter_arg_type { 827 FILTER_ARG_NONE, 828 FILTER_ARG_BOOLEAN, 829 FILTER_ARG_VALUE, 830 FILTER_ARG_FIELD, 831 FILTER_ARG_EXP, 832 FILTER_ARG_OP, 833 FILTER_ARG_NUM, 834 FILTER_ARG_STR, 835}; 836 837enum filter_value_type { 838 FILTER_NUMBER, 839 FILTER_STRING, 840 FILTER_CHAR 841}; 842 843struct fliter_arg; 844 845struct filter_arg_boolean { 846 enum filter_boolean_type value; 847}; 848 849struct filter_arg_field { 850 struct format_field *field; 851}; 852 853struct filter_arg_value { 854 enum filter_value_type type; 855 union { 856 char *str; 857 unsigned long long val; 858 }; 859}; 860 861struct filter_arg_op { 862 enum filter_op_type type; 863 struct filter_arg *left; 864 struct filter_arg *right; 865}; 866 867struct filter_arg_exp { 868 enum filter_exp_type type; 869 struct filter_arg *left; 870 struct filter_arg *right; 871}; 872 873struct filter_arg_num { 874 enum filter_cmp_type type; 875 struct filter_arg *left; 876 struct filter_arg *right; 877}; 878 879struct filter_arg_str { 880 enum filter_cmp_type type; 881 struct format_field *field; 882 char *val; 883 char *buffer; 884 regex_t reg; 885}; 886 887struct filter_arg { 888 enum filter_arg_type type; 889 union { 890 struct filter_arg_boolean boolean; 891 struct filter_arg_field field; 892 struct filter_arg_value value; 893 struct filter_arg_op op; 894 struct filter_arg_exp exp; 895 struct filter_arg_num num; 896 struct filter_arg_str str; 897 }; 898}; 899 900struct filter_type { 901 int event_id; 902 struct event_format *event; 903 struct filter_arg *filter; 904}; 905 906#define PEVENT_FILTER_ERROR_BUFSZ 1024 907 908struct event_filter { 909 struct pevent *pevent; 910 int filters; 911 struct filter_type *event_filters; 912 char error_buffer[PEVENT_FILTER_ERROR_BUFSZ]; 913}; 914 915struct event_filter *pevent_filter_alloc(struct pevent *pevent); 916 917/* for backward compatibility */ 918#define FILTER_NONE PEVENT_ERRNO__NO_FILTER 919#define FILTER_NOEXIST PEVENT_ERRNO__FILTER_NOT_FOUND 920#define FILTER_MISS PEVENT_ERRNO__FILTER_MISS 921#define FILTER_MATCH PEVENT_ERRNO__FILTER_MATCH 922 923enum filter_trivial_type { 924 FILTER_TRIVIAL_FALSE, 925 FILTER_TRIVIAL_TRUE, 926 FILTER_TRIVIAL_BOTH, 927}; 928 929enum pevent_errno pevent_filter_add_filter_str(struct event_filter *filter, 930 const char *filter_str); 931 932enum pevent_errno pevent_filter_match(struct event_filter *filter, 933 struct pevent_record *record); 934 935int pevent_filter_strerror(struct event_filter *filter, enum pevent_errno err, 936 char *buf, size_t buflen); 937 938int pevent_event_filtered(struct event_filter *filter, 939 int event_id); 940 941void pevent_filter_reset(struct event_filter *filter); 942 943int pevent_filter_clear_trivial(struct event_filter *filter, 944 enum filter_trivial_type type); 945 946void pevent_filter_free(struct event_filter *filter); 947 948char *pevent_filter_make_string(struct event_filter *filter, int event_id); 949 950int pevent_filter_remove_event(struct event_filter *filter, 951 int event_id); 952 953int pevent_filter_event_has_trivial(struct event_filter *filter, 954 int event_id, 955 enum filter_trivial_type type); 956 957int pevent_filter_copy(struct event_filter *dest, struct event_filter *source); 958 959int pevent_update_trivial(struct event_filter *dest, struct event_filter *source, 960 enum filter_trivial_type type); 961 962int pevent_filter_compare(struct event_filter *filter1, struct event_filter *filter2); 963 964#endif /* _PARSE_EVENTS_H */ 965