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406 lines
12 KiB
406 lines
12 KiB
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%option reentrant |
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%option bison-bridge |
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%option prefix="parse_events_" |
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%option stack |
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%option bison-locations |
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%option yylineno |
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%option reject |
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%{ |
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#include <errno.h> |
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#include <sys/types.h> |
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#include <sys/stat.h> |
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#include <unistd.h> |
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#include "../perf.h" |
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#include "parse-events.h" |
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#include "parse-events-bison.h" |
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#include "evsel.h" |
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char *parse_events_get_text(yyscan_t yyscanner); |
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YYSTYPE *parse_events_get_lval(yyscan_t yyscanner); |
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static int __value(YYSTYPE *yylval, char *str, int base, int token) |
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{ |
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u64 num; |
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errno = 0; |
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num = strtoull(str, NULL, base); |
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if (errno) |
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return PE_ERROR; |
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yylval->num = num; |
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return token; |
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} |
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static int value(yyscan_t scanner, int base) |
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{ |
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YYSTYPE *yylval = parse_events_get_lval(scanner); |
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char *text = parse_events_get_text(scanner); |
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return __value(yylval, text, base, PE_VALUE); |
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} |
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static int str(yyscan_t scanner, int token) |
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{ |
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YYSTYPE *yylval = parse_events_get_lval(scanner); |
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char *text = parse_events_get_text(scanner); |
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if (text[0] != '\'') { |
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yylval->str = strdup(text); |
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} else { |
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/* |
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* If a text tag specified on the command line |
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* contains opening single quite ' then it is |
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* expected that the tag ends with single quote |
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* as well, like this: |
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* name=\'CPU_CLK_UNHALTED.THREAD:cmask=1\' |
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* quotes need to be escaped to bypass shell |
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* processing. |
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*/ |
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yylval->str = strndup(&text[1], strlen(text) - 2); |
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} |
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return token; |
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} |
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static int raw(yyscan_t scanner) |
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{ |
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YYSTYPE *yylval = parse_events_get_lval(scanner); |
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char *text = parse_events_get_text(scanner); |
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if (perf_pmu__parse_check(text) == PMU_EVENT_SYMBOL) |
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return str(scanner, PE_NAME); |
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return __value(yylval, text + 1, 16, PE_RAW); |
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} |
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static bool isbpf_suffix(char *text) |
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{ |
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int len = strlen(text); |
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if (len < 2) |
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return false; |
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if ((text[len - 1] == 'c' || text[len - 1] == 'o') && |
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text[len - 2] == '.') |
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return true; |
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if (len > 4 && !strcmp(text + len - 4, ".obj")) |
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return true; |
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return false; |
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} |
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static bool isbpf(yyscan_t scanner) |
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{ |
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char *text = parse_events_get_text(scanner); |
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struct stat st; |
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if (!isbpf_suffix(text)) |
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return false; |
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return stat(text, &st) == 0; |
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} |
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/* |
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* This function is called when the parser gets two kind of input: |
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* |
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* @cfg1 or @cfg2=config |
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* |
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* The leading '@' is stripped off before 'cfg1' and 'cfg2=config' are given to |
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* bison. In the latter case it is necessary to keep the string intact so that |
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* the PMU kernel driver can determine what configurable is associated to |
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* 'config'. |
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*/ |
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static int drv_str(yyscan_t scanner, int token) |
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{ |
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YYSTYPE *yylval = parse_events_get_lval(scanner); |
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char *text = parse_events_get_text(scanner); |
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/* Strip off the '@' */ |
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yylval->str = strdup(text + 1); |
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return token; |
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} |
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#define REWIND(__alloc) \ |
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do { \ |
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YYSTYPE *__yylval = parse_events_get_lval(yyscanner); \ |
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char *text = parse_events_get_text(yyscanner); \ |
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\ |
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if (__alloc) \ |
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__yylval->str = strdup(text); \ |
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\ |
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yycolumn -= strlen(text); \ |
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yyless(0); \ |
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} while (0) |
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static int pmu_str_check(yyscan_t scanner, struct parse_events_state *parse_state) |
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{ |
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YYSTYPE *yylval = parse_events_get_lval(scanner); |
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char *text = parse_events_get_text(scanner); |
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yylval->str = strdup(text); |
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if (parse_state->fake_pmu) |
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return PE_PMU_EVENT_FAKE; |
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switch (perf_pmu__parse_check(text)) { |
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case PMU_EVENT_SYMBOL_PREFIX: |
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return PE_PMU_EVENT_PRE; |
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case PMU_EVENT_SYMBOL_SUFFIX: |
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return PE_PMU_EVENT_SUF; |
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case PMU_EVENT_SYMBOL: |
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return PE_KERNEL_PMU_EVENT; |
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default: |
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return PE_NAME; |
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} |
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} |
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static int sym(yyscan_t scanner, int type, int config) |
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{ |
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YYSTYPE *yylval = parse_events_get_lval(scanner); |
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yylval->num = (type << 16) + config; |
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return type == PERF_TYPE_HARDWARE ? PE_VALUE_SYM_HW : PE_VALUE_SYM_SW; |
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} |
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static int tool(yyscan_t scanner, enum perf_tool_event event) |
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{ |
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YYSTYPE *yylval = parse_events_get_lval(scanner); |
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yylval->num = event; |
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return PE_VALUE_SYM_TOOL; |
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} |
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static int term(yyscan_t scanner, int type) |
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{ |
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YYSTYPE *yylval = parse_events_get_lval(scanner); |
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yylval->num = type; |
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return PE_TERM; |
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} |
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#define YY_USER_ACTION \ |
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do { \ |
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yylloc->last_column = yylloc->first_column; \ |
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yylloc->first_column = yycolumn; \ |
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yycolumn += yyleng; \ |
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} while (0); |
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#define USER_REJECT \ |
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yycolumn -= yyleng; \ |
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REJECT |
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%} |
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%x mem |
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%s config |
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%x event |
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%x array |
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group [^,{}/]*[{][^}]*[}][^,{}/]* |
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event_pmu [^,{}/]+[/][^/]*[/][^,{}/]* |
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event [^,{}/]+ |
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bpf_object [^,{}]+\.(o|bpf)[a-zA-Z0-9._]* |
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bpf_source [^,{}]+\.c[a-zA-Z0-9._]* |
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num_dec [0-9]+ |
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num_hex 0x[a-fA-F0-9]+ |
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num_raw_hex [a-fA-F0-9]+ |
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name [a-zA-Z_*?\[\]][a-zA-Z0-9_*?.\[\]]* |
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name_tag [\'][a-zA-Z_*?\[\]][a-zA-Z0-9_*?\-,\.\[\]:=]*[\'] |
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name_minus [a-zA-Z_*?][a-zA-Z0-9\-_*?.:]* |
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drv_cfg_term [a-zA-Z0-9_\.]+(=[a-zA-Z0-9_*?\.:]+)? |
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/* If you add a modifier you need to update check_modifier() */ |
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modifier_event [ukhpPGHSDIWeb]+ |
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modifier_bp [rwx]{1,3} |
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%% |
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%{ |
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struct parse_events_state *_parse_state = parse_events_get_extra(yyscanner); |
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{ |
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int start_token = _parse_state->stoken; |
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if (start_token == PE_START_TERMS) |
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BEGIN(config); |
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else if (start_token == PE_START_EVENTS) |
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BEGIN(event); |
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if (start_token) { |
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_parse_state->stoken = 0; |
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/* |
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* The flex parser does not init locations variable |
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* via the scan_string interface, so we need do the |
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* init in here. |
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*/ |
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yycolumn = 0; |
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return start_token; |
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} |
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} |
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%} |
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<event>{ |
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{group} { |
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BEGIN(INITIAL); |
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REWIND(0); |
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} |
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{event_pmu} | |
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{bpf_object} | |
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{bpf_source} | |
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{event} { |
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BEGIN(INITIAL); |
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REWIND(1); |
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return PE_EVENT_NAME; |
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} |
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<<EOF>> { |
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BEGIN(INITIAL); |
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REWIND(0); |
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} |
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, { |
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return ','; |
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} |
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} |
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<array>{ |
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"]" { BEGIN(config); return ']'; } |
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{num_dec} { return value(yyscanner, 10); } |
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{num_hex} { return value(yyscanner, 16); } |
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, { return ','; } |
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"\.\.\." { return PE_ARRAY_RANGE; } |
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} |
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<config>{ |
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/* |
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* Please update config_term_names when new static term is added. |
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*/ |
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config { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_CONFIG); } |
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config1 { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_CONFIG1); } |
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config2 { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_CONFIG2); } |
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name { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_NAME); } |
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period { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_SAMPLE_PERIOD); } |
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freq { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_SAMPLE_FREQ); } |
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branch_type { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_BRANCH_SAMPLE_TYPE); } |
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time { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_TIME); } |
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call-graph { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_CALLGRAPH); } |
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stack-size { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_STACKSIZE); } |
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max-stack { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_MAX_STACK); } |
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nr { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_MAX_EVENTS); } |
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inherit { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_INHERIT); } |
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no-inherit { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_NOINHERIT); } |
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overwrite { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_OVERWRITE); } |
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no-overwrite { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_NOOVERWRITE); } |
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percore { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_PERCORE); } |
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aux-output { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_AUX_OUTPUT); } |
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aux-sample-size { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_AUX_SAMPLE_SIZE); } |
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r{num_raw_hex} { return raw(yyscanner); } |
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r0x{num_raw_hex} { return raw(yyscanner); } |
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, { return ','; } |
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"/" { BEGIN(INITIAL); return '/'; } |
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{name_minus} { return str(yyscanner, PE_NAME); } |
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\[all\] { return PE_ARRAY_ALL; } |
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"[" { BEGIN(array); return '['; } |
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@{drv_cfg_term} { return drv_str(yyscanner, PE_DRV_CFG_TERM); } |
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} |
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<mem>{ |
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{modifier_bp} { return str(yyscanner, PE_MODIFIER_BP); } |
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: { return ':'; } |
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"/" { return '/'; } |
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{num_dec} { return value(yyscanner, 10); } |
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{num_hex} { return value(yyscanner, 16); } |
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/* |
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* We need to separate 'mem:' scanner part, in order to get specific |
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* modifier bits parsed out. Otherwise we would need to handle PE_NAME |
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* and we'd need to parse it manually. During the escape from <mem> |
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* state we need to put the escaping char back, so we dont miss it. |
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*/ |
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. { unput(*yytext); BEGIN(INITIAL); } |
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/* |
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* We destroy the scanner after reaching EOF, |
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* but anyway just to be sure get back to INIT state. |
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*/ |
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<<EOF>> { BEGIN(INITIAL); } |
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} |
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cpu-cycles|cycles { return sym(yyscanner, PERF_TYPE_HARDWARE, PERF_COUNT_HW_CPU_CYCLES); } |
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stalled-cycles-frontend|idle-cycles-frontend { return sym(yyscanner, PERF_TYPE_HARDWARE, PERF_COUNT_HW_STALLED_CYCLES_FRONTEND); } |
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stalled-cycles-backend|idle-cycles-backend { return sym(yyscanner, PERF_TYPE_HARDWARE, PERF_COUNT_HW_STALLED_CYCLES_BACKEND); } |
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instructions { return sym(yyscanner, PERF_TYPE_HARDWARE, PERF_COUNT_HW_INSTRUCTIONS); } |
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cache-references { return sym(yyscanner, PERF_TYPE_HARDWARE, PERF_COUNT_HW_CACHE_REFERENCES); } |
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cache-misses { return sym(yyscanner, PERF_TYPE_HARDWARE, PERF_COUNT_HW_CACHE_MISSES); } |
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branch-instructions|branches { return sym(yyscanner, PERF_TYPE_HARDWARE, PERF_COUNT_HW_BRANCH_INSTRUCTIONS); } |
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branch-misses { return sym(yyscanner, PERF_TYPE_HARDWARE, PERF_COUNT_HW_BRANCH_MISSES); } |
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bus-cycles { return sym(yyscanner, PERF_TYPE_HARDWARE, PERF_COUNT_HW_BUS_CYCLES); } |
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ref-cycles { return sym(yyscanner, PERF_TYPE_HARDWARE, PERF_COUNT_HW_REF_CPU_CYCLES); } |
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cpu-clock { return sym(yyscanner, PERF_TYPE_SOFTWARE, PERF_COUNT_SW_CPU_CLOCK); } |
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task-clock { return sym(yyscanner, PERF_TYPE_SOFTWARE, PERF_COUNT_SW_TASK_CLOCK); } |
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page-faults|faults { return sym(yyscanner, PERF_TYPE_SOFTWARE, PERF_COUNT_SW_PAGE_FAULTS); } |
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minor-faults { return sym(yyscanner, PERF_TYPE_SOFTWARE, PERF_COUNT_SW_PAGE_FAULTS_MIN); } |
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major-faults { return sym(yyscanner, PERF_TYPE_SOFTWARE, PERF_COUNT_SW_PAGE_FAULTS_MAJ); } |
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context-switches|cs { return sym(yyscanner, PERF_TYPE_SOFTWARE, PERF_COUNT_SW_CONTEXT_SWITCHES); } |
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cpu-migrations|migrations { return sym(yyscanner, PERF_TYPE_SOFTWARE, PERF_COUNT_SW_CPU_MIGRATIONS); } |
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alignment-faults { return sym(yyscanner, PERF_TYPE_SOFTWARE, PERF_COUNT_SW_ALIGNMENT_FAULTS); } |
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emulation-faults { return sym(yyscanner, PERF_TYPE_SOFTWARE, PERF_COUNT_SW_EMULATION_FAULTS); } |
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dummy { return sym(yyscanner, PERF_TYPE_SOFTWARE, PERF_COUNT_SW_DUMMY); } |
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duration_time { return tool(yyscanner, PERF_TOOL_DURATION_TIME); } |
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bpf-output { return sym(yyscanner, PERF_TYPE_SOFTWARE, PERF_COUNT_SW_BPF_OUTPUT); } |
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cgroup-switches { return sym(yyscanner, PERF_TYPE_SOFTWARE, PERF_COUNT_SW_CGROUP_SWITCHES); } |
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/* |
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* We have to handle the kernel PMU event cycles-ct/cycles-t/mem-loads/mem-stores separately. |
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* Because the prefix cycles is mixed up with cpu-cycles. |
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* loads and stores are mixed up with cache event |
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*/ |
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cycles-ct | |
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cycles-t | |
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mem-loads | |
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mem-loads-aux | |
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mem-stores | |
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topdown-[a-z-]+ | |
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tx-capacity-[a-z-]+ | |
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el-capacity-[a-z-]+ { return str(yyscanner, PE_KERNEL_PMU_EVENT); } |
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L1-dcache|l1-d|l1d|L1-data | |
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L1-icache|l1-i|l1i|L1-instruction | |
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LLC|L2 | |
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dTLB|d-tlb|Data-TLB | |
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iTLB|i-tlb|Instruction-TLB | |
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branch|branches|bpu|btb|bpc | |
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node { return str(yyscanner, PE_NAME_CACHE_TYPE); } |
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load|loads|read | |
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store|stores|write | |
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prefetch|prefetches | |
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speculative-read|speculative-load | |
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refs|Reference|ops|access | |
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misses|miss { return str(yyscanner, PE_NAME_CACHE_OP_RESULT); } |
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mem: { BEGIN(mem); return PE_PREFIX_MEM; } |
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r{num_raw_hex} { return raw(yyscanner); } |
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{num_dec} { return value(yyscanner, 10); } |
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{num_hex} { return value(yyscanner, 16); } |
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{modifier_event} { return str(yyscanner, PE_MODIFIER_EVENT); } |
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{bpf_object} { if (!isbpf(yyscanner)) { USER_REJECT }; return str(yyscanner, PE_BPF_OBJECT); } |
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{bpf_source} { if (!isbpf(yyscanner)) { USER_REJECT }; return str(yyscanner, PE_BPF_SOURCE); } |
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{name} { return pmu_str_check(yyscanner, _parse_state); } |
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{name_tag} { return str(yyscanner, PE_NAME); } |
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"/" { BEGIN(config); return '/'; } |
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- { return '-'; } |
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, { BEGIN(event); return ','; } |
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: { return ':'; } |
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"{" { BEGIN(event); return '{'; } |
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"}" { return '}'; } |
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= { return '='; } |
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\n { } |
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. { } |
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%% |
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int parse_events_wrap(void *scanner __maybe_unused) |
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{ |
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return 1; |
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}
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