1 2 %option reentrant 3 %option bison-bridge 4 %option prefix="parse_events_" 5 %option stack 6 %option bison-locations 7 %option yylineno 8 %option reject 9 10 %{ 11 #include <errno.h> 12 #include <sys/types.h> 13 #include <sys/stat.h> 14 #include <unistd.h> 15 #include "parse-events.h" 16 #include "parse-events-bison.h" 17 #include "evsel.h" 18 19 char *parse_events_get_text(yyscan_t yyscanner); 20 YYSTYPE *parse_events_get_lval(yyscan_t yyscanner); 21 22 static int __value(YYSTYPE *yylval, char *str, int base, int token) 23 { 24 u64 num; 25 26 errno = 0; 27 num = strtoull(str, NULL, base); 28 if (errno) 29 return PE_ERROR; 30 31 yylval->num = num; 32 return token; 33 } 34 35 static int value(yyscan_t scanner, int base) 36 { 37 YYSTYPE *yylval = parse_events_get_lval(scanner); 38 char *text = parse_events_get_text(scanner); 39 40 return __value(yylval, text, base, PE_VALUE); 41 } 42 43 static int str(yyscan_t scanner, int token) 44 { 45 YYSTYPE *yylval = parse_events_get_lval(scanner); 46 char *text = parse_events_get_text(scanner); 47 48 if (text[0] != '\'') { 49 yylval->str = strdup(text); 50 } else { 51 /* 52 * If a text tag specified on the command line 53 * contains opening single quite ' then it is 54 * expected that the tag ends with single quote 55 * as well, like this: 56 * name=\'CPU_CLK_UNHALTED.THREAD:cmask=1\' 57 * quotes need to be escaped to bypass shell 58 * processing. 59 */ 60 yylval->str = strndup(&text[1], strlen(text) - 2); 61 } 62 63 return token; 64 } 65 66 static int lc_str(yyscan_t scanner, const struct parse_events_state *state) 67 { 68 return str(scanner, state->match_legacy_cache_terms ? PE_LEGACY_CACHE : PE_NAME); 69 } 70 71 /* 72 * This function is called when the parser gets two kind of input: 73 * 74 * @cfg1 or @cfg2=config 75 * 76 * The leading '@' is stripped off before 'cfg1' and 'cfg2=config' are given to 77 * bison. In the latter case it is necessary to keep the string intact so that 78 * the PMU kernel driver can determine what configurable is associated to 79 * 'config'. 80 */ 81 static int drv_str(yyscan_t scanner, int token) 82 { 83 YYSTYPE *yylval = parse_events_get_lval(scanner); 84 char *text = parse_events_get_text(scanner); 85 86 /* Strip off the '@' */ 87 yylval->str = strdup(text + 1); 88 return token; 89 } 90 91 #define REWIND(__alloc) \ 92 do { \ 93 YYSTYPE *__yylval = parse_events_get_lval(yyscanner); \ 94 char *text = parse_events_get_text(yyscanner); \ 95 \ 96 if (__alloc) \ 97 __yylval->str = strdup(text); \ 98 \ 99 yycolumn -= strlen(text); \ 100 yyless(0); \ 101 } while (0) 102 103 static int sym(yyscan_t scanner, int type, int config) 104 { 105 YYSTYPE *yylval = parse_events_get_lval(scanner); 106 107 yylval->num = (type << 16) + config; 108 return type == PERF_TYPE_HARDWARE ? PE_VALUE_SYM_HW : PE_VALUE_SYM_SW; 109 } 110 111 static int tool(yyscan_t scanner, enum perf_tool_event event) 112 { 113 YYSTYPE *yylval = parse_events_get_lval(scanner); 114 115 yylval->num = event; 116 return PE_VALUE_SYM_TOOL; 117 } 118 119 static int term(yyscan_t scanner, enum parse_events__term_type type) 120 { 121 YYSTYPE *yylval = parse_events_get_lval(scanner); 122 123 yylval->term_type = type; 124 return PE_TERM; 125 } 126 127 static int hw_term(yyscan_t scanner, int config) 128 { 129 YYSTYPE *yylval = parse_events_get_lval(scanner); 130 char *text = parse_events_get_text(scanner); 131 132 yylval->hardware_term.str = strdup(text); 133 yylval->hardware_term.num = PERF_TYPE_HARDWARE + config; 134 return PE_TERM_HW; 135 } 136 137 #define YY_USER_ACTION \ 138 do { \ 139 yylloc->last_column = yylloc->first_column; \ 140 yylloc->first_column = yycolumn; \ 141 yycolumn += yyleng; \ 142 } while (0); 143 144 #define USER_REJECT \ 145 yycolumn -= yyleng; \ 146 REJECT 147 148 %} 149 150 %x mem 151 %s config 152 %x event 153 154 group [^,{}/]*[{][^}]*[}][^,{}/]* 155 event_pmu [^,{}/]+[/][^/]*[/][^,{}/]* 156 event [^,{}/]+ 157 158 num_dec [0-9]+ 159 num_hex 0x[a-fA-F0-9]{1,16} 160 num_raw_hex [a-fA-F0-9]{1,16} 161 name [a-zA-Z_*?\[\]][a-zA-Z0-9_*?.\[\]!\-]* 162 name_tag [\'][a-zA-Z_*?\[\]][a-zA-Z0-9_*?\-,\.\[\]:=]*[\'] 163 name_minus [a-zA-Z_*?][a-zA-Z0-9\-_*?.:]* 164 drv_cfg_term [a-zA-Z0-9_\.]+(=[a-zA-Z0-9_*?\.:]+)? 165 /* 166 * If you add a modifier you need to update check_modifier(). 167 * Also, the letters in modifier_event must not be in modifier_bp. 168 */ 169 modifier_event [ukhpPGHSDIWeb]+ 170 modifier_bp [rwx]{1,3} 171 lc_type (L1-dcache|l1-d|l1d|L1-data|L1-icache|l1-i|l1i|L1-instruction|LLC|L2|dTLB|d-tlb|Data-TLB|iTLB|i-tlb|Instruction-TLB|branch|branches|bpu|btb|bpc|node) 172 lc_op_result (load|loads|read|store|stores|write|prefetch|prefetches|speculative-read|speculative-load|refs|Reference|ops|access|misses|miss) 173 digit [0-9] 174 non_digit [^0-9] 175 176 %% 177 178 %{ 179 struct parse_events_state *_parse_state = parse_events_get_extra(yyscanner); 180 { 181 int start_token = _parse_state->stoken; 182 183 if (start_token == PE_START_TERMS) 184 BEGIN(config); 185 else if (start_token == PE_START_EVENTS) 186 BEGIN(event); 187 188 if (start_token) { 189 _parse_state->stoken = 0; 190 /* 191 * The flex parser does not init locations variable 192 * via the scan_string interface, so we need do the 193 * init in here. 194 */ 195 yycolumn = 0; 196 return start_token; 197 } 198 } 199 %} 200 201 <event>{ 202 203 {group} { 204 BEGIN(INITIAL); 205 REWIND(0); 206 } 207 208 {event_pmu} | 209 {event} { 210 BEGIN(INITIAL); 211 REWIND(1); 212 return PE_EVENT_NAME; 213 } 214 215 <<EOF>> { 216 BEGIN(INITIAL); 217 REWIND(0); 218 } 219 , { 220 return ','; 221 } 222 } 223 224 <config>{ 225 /* 226 * Please update config_term_names when new static term is added. 227 */ 228 config { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_CONFIG); } 229 config1 { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_CONFIG1); } 230 config2 { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_CONFIG2); } 231 config3 { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_CONFIG3); } 232 name { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_NAME); } 233 period { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_SAMPLE_PERIOD); } 234 freq { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_SAMPLE_FREQ); } 235 branch_type { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_BRANCH_SAMPLE_TYPE); } 236 time { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_TIME); } 237 call-graph { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_CALLGRAPH); } 238 stack-size { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_STACKSIZE); } 239 max-stack { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_MAX_STACK); } 240 nr { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_MAX_EVENTS); } 241 inherit { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_INHERIT); } 242 no-inherit { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_NOINHERIT); } 243 overwrite { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_OVERWRITE); } 244 no-overwrite { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_NOOVERWRITE); } 245 percore { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_PERCORE); } 246 aux-output { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_AUX_OUTPUT); } 247 aux-sample-size { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_AUX_SAMPLE_SIZE); } 248 metric-id { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_METRIC_ID); } 249 cpu-cycles|cycles { return hw_term(yyscanner, PERF_COUNT_HW_CPU_CYCLES); } 250 stalled-cycles-frontend|idle-cycles-frontend { return hw_term(yyscanner, PERF_COUNT_HW_STALLED_CYCLES_FRONTEND); } 251 stalled-cycles-backend|idle-cycles-backend { return hw_term(yyscanner, PERF_COUNT_HW_STALLED_CYCLES_BACKEND); } 252 instructions { return hw_term(yyscanner, PERF_COUNT_HW_INSTRUCTIONS); } 253 cache-references { return hw_term(yyscanner, PERF_COUNT_HW_CACHE_REFERENCES); } 254 cache-misses { return hw_term(yyscanner, PERF_COUNT_HW_CACHE_MISSES); } 255 branch-instructions|branches { return hw_term(yyscanner, PERF_COUNT_HW_BRANCH_INSTRUCTIONS); } 256 branch-misses { return hw_term(yyscanner, PERF_COUNT_HW_BRANCH_MISSES); } 257 bus-cycles { return hw_term(yyscanner, PERF_COUNT_HW_BUS_CYCLES); } 258 ref-cycles { return hw_term(yyscanner, PERF_COUNT_HW_REF_CPU_CYCLES); } 259 r{num_raw_hex} { return str(yyscanner, PE_RAW); } 260 r0x{num_raw_hex} { return str(yyscanner, PE_RAW); } 261 , { return ','; } 262 "/" { BEGIN(INITIAL); return '/'; } 263 {lc_type} { return lc_str(yyscanner, _parse_state); } 264 {lc_type}-{lc_op_result} { return lc_str(yyscanner, _parse_state); } 265 {lc_type}-{lc_op_result}-{lc_op_result} { return lc_str(yyscanner, _parse_state); } 266 {name_minus} { return str(yyscanner, PE_NAME); } 267 @{drv_cfg_term} { return drv_str(yyscanner, PE_DRV_CFG_TERM); } 268 } 269 270 <mem>{ 271 {modifier_bp} { return str(yyscanner, PE_MODIFIER_BP); } 272 /* 273 * The colon before memory access modifiers can get mixed up with the 274 * colon before event modifiers. Fortunately none of the option letters 275 * are the same, so trailing context can be used disambiguate the two 276 * cases. 277 */ 278 ":"/{modifier_bp} { return PE_BP_COLON; } 279 /* 280 * The slash before memory length can get mixed up with the slash before 281 * config terms. Fortunately config terms do not start with a numeric 282 * digit, so trailing context can be used disambiguate the two cases. 283 */ 284 "/"/{digit} { return PE_BP_SLASH; } 285 "/"/{non_digit} { BEGIN(config); return '/'; } 286 {num_dec} { return value(yyscanner, 10); } 287 {num_hex} { return value(yyscanner, 16); } 288 /* 289 * We need to separate 'mem:' scanner part, in order to get specific 290 * modifier bits parsed out. Otherwise we would need to handle PE_NAME 291 * and we'd need to parse it manually. During the escape from <mem> 292 * state we need to put the escaping char back, so we dont miss it. 293 */ 294 . { unput(*yytext); BEGIN(INITIAL); } 295 /* 296 * We destroy the scanner after reaching EOF, 297 * but anyway just to be sure get back to INIT state. 298 */ 299 <<EOF>> { BEGIN(INITIAL); } 300 } 301 302 cpu-cycles|cycles { return sym(yyscanner, PERF_TYPE_HARDWARE, PERF_COUNT_HW_CPU_CYCLES); } 303 stalled-cycles-frontend|idle-cycles-frontend { return sym(yyscanner, PERF_TYPE_HARDWARE, PERF_COUNT_HW_STALLED_CYCLES_FRONTEND); } 304 stalled-cycles-backend|idle-cycles-backend { return sym(yyscanner, PERF_TYPE_HARDWARE, PERF_COUNT_HW_STALLED_CYCLES_BACKEND); } 305 instructions { return sym(yyscanner, PERF_TYPE_HARDWARE, PERF_COUNT_HW_INSTRUCTIONS); } 306 cache-references { return sym(yyscanner, PERF_TYPE_HARDWARE, PERF_COUNT_HW_CACHE_REFERENCES); } 307 cache-misses { return sym(yyscanner, PERF_TYPE_HARDWARE, PERF_COUNT_HW_CACHE_MISSES); } 308 branch-instructions|branches { return sym(yyscanner, PERF_TYPE_HARDWARE, PERF_COUNT_HW_BRANCH_INSTRUCTIONS); } 309 branch-misses { return sym(yyscanner, PERF_TYPE_HARDWARE, PERF_COUNT_HW_BRANCH_MISSES); } 310 bus-cycles { return sym(yyscanner, PERF_TYPE_HARDWARE, PERF_COUNT_HW_BUS_CYCLES); } 311 ref-cycles { return sym(yyscanner, PERF_TYPE_HARDWARE, PERF_COUNT_HW_REF_CPU_CYCLES); } 312 cpu-clock { return sym(yyscanner, PERF_TYPE_SOFTWARE, PERF_COUNT_SW_CPU_CLOCK); } 313 task-clock { return sym(yyscanner, PERF_TYPE_SOFTWARE, PERF_COUNT_SW_TASK_CLOCK); } 314 page-faults|faults { return sym(yyscanner, PERF_TYPE_SOFTWARE, PERF_COUNT_SW_PAGE_FAULTS); } 315 minor-faults { return sym(yyscanner, PERF_TYPE_SOFTWARE, PERF_COUNT_SW_PAGE_FAULTS_MIN); } 316 major-faults { return sym(yyscanner, PERF_TYPE_SOFTWARE, PERF_COUNT_SW_PAGE_FAULTS_MAJ); } 317 context-switches|cs { return sym(yyscanner, PERF_TYPE_SOFTWARE, PERF_COUNT_SW_CONTEXT_SWITCHES); } 318 cpu-migrations|migrations { return sym(yyscanner, PERF_TYPE_SOFTWARE, PERF_COUNT_SW_CPU_MIGRATIONS); } 319 alignment-faults { return sym(yyscanner, PERF_TYPE_SOFTWARE, PERF_COUNT_SW_ALIGNMENT_FAULTS); } 320 emulation-faults { return sym(yyscanner, PERF_TYPE_SOFTWARE, PERF_COUNT_SW_EMULATION_FAULTS); } 321 dummy { return sym(yyscanner, PERF_TYPE_SOFTWARE, PERF_COUNT_SW_DUMMY); } 322 duration_time { return tool(yyscanner, PERF_TOOL_DURATION_TIME); } 323 user_time { return tool(yyscanner, PERF_TOOL_USER_TIME); } 324 system_time { return tool(yyscanner, PERF_TOOL_SYSTEM_TIME); } 325 bpf-output { return sym(yyscanner, PERF_TYPE_SOFTWARE, PERF_COUNT_SW_BPF_OUTPUT); } 326 cgroup-switches { return sym(yyscanner, PERF_TYPE_SOFTWARE, PERF_COUNT_SW_CGROUP_SWITCHES); } 327 328 {lc_type} { return str(yyscanner, PE_LEGACY_CACHE); } 329 {lc_type}-{lc_op_result} { return str(yyscanner, PE_LEGACY_CACHE); } 330 {lc_type}-{lc_op_result}-{lc_op_result} { return str(yyscanner, PE_LEGACY_CACHE); } 331 mem: { BEGIN(mem); return PE_PREFIX_MEM; } 332 r{num_raw_hex} { return str(yyscanner, PE_RAW); } 333 {num_dec} { return value(yyscanner, 10); } 334 {num_hex} { return value(yyscanner, 16); } 335 336 {modifier_event} { return str(yyscanner, PE_MODIFIER_EVENT); } 337 {name} { return str(yyscanner, PE_NAME); } 338 {name_tag} { return str(yyscanner, PE_NAME); } 339 "/" { BEGIN(config); return '/'; } 340 , { BEGIN(event); return ','; } 341 : { return ':'; } 342 "{" { BEGIN(event); return '{'; } 343 "}" { return '}'; } 344 = { return '='; } 345 \n { } 346 . { } 347 348 %% 349 350 int parse_events_wrap(void *scanner __maybe_unused) 351 { 352 return 1; 353 } 354