1 2 %option reentrant 3 %option bison-bridge 4 %option prefix="parse_events_" 5 %option stack 6 %option bison-locations 7 %option yylineno 8 9 %{ 10 #include <errno.h> 11 #include "../perf.h" 12 #include "parse-events-bison.h" 13 #include "parse-events.h" 14 15 char *parse_events_get_text(yyscan_t yyscanner); 16 YYSTYPE *parse_events_get_lval(yyscan_t yyscanner); 17 18 static int __value(YYSTYPE *yylval, char *str, int base, int token) 19 { 20 u64 num; 21 22 errno = 0; 23 num = strtoull(str, NULL, base); 24 if (errno) 25 return PE_ERROR; 26 27 yylval->num = num; 28 return token; 29 } 30 31 static int value(yyscan_t scanner, int base) 32 { 33 YYSTYPE *yylval = parse_events_get_lval(scanner); 34 char *text = parse_events_get_text(scanner); 35 36 return __value(yylval, text, base, PE_VALUE); 37 } 38 39 static int raw(yyscan_t scanner) 40 { 41 YYSTYPE *yylval = parse_events_get_lval(scanner); 42 char *text = parse_events_get_text(scanner); 43 44 return __value(yylval, text + 1, 16, PE_RAW); 45 } 46 47 static int str(yyscan_t scanner, int token) 48 { 49 YYSTYPE *yylval = parse_events_get_lval(scanner); 50 char *text = parse_events_get_text(scanner); 51 52 yylval->str = strdup(text); 53 return token; 54 } 55 56 #define REWIND(__alloc) \ 57 do { \ 58 YYSTYPE *__yylval = parse_events_get_lval(yyscanner); \ 59 char *text = parse_events_get_text(yyscanner); \ 60 \ 61 if (__alloc) \ 62 __yylval->str = strdup(text); \ 63 \ 64 yycolumn -= strlen(text); \ 65 yyless(0); \ 66 } while (0) 67 68 static int pmu_str_check(yyscan_t scanner) 69 { 70 YYSTYPE *yylval = parse_events_get_lval(scanner); 71 char *text = parse_events_get_text(scanner); 72 73 yylval->str = strdup(text); 74 switch (perf_pmu__parse_check(text)) { 75 case PMU_EVENT_SYMBOL_PREFIX: 76 return PE_PMU_EVENT_PRE; 77 case PMU_EVENT_SYMBOL_SUFFIX: 78 return PE_PMU_EVENT_SUF; 79 case PMU_EVENT_SYMBOL: 80 return PE_KERNEL_PMU_EVENT; 81 default: 82 return PE_NAME; 83 } 84 } 85 86 static int sym(yyscan_t scanner, int type, int config) 87 { 88 YYSTYPE *yylval = parse_events_get_lval(scanner); 89 90 yylval->num = (type << 16) + config; 91 return type == PERF_TYPE_HARDWARE ? PE_VALUE_SYM_HW : PE_VALUE_SYM_SW; 92 } 93 94 static int term(yyscan_t scanner, int type) 95 { 96 YYSTYPE *yylval = parse_events_get_lval(scanner); 97 98 yylval->num = type; 99 return PE_TERM; 100 } 101 102 #define YY_USER_ACTION \ 103 do { \ 104 yylloc->last_column = yylloc->first_column; \ 105 yylloc->first_column = yycolumn; \ 106 yycolumn += yyleng; \ 107 } while (0); 108 109 %} 110 111 %x mem 112 %s config 113 %x event 114 115 group [^,{}/]*[{][^}]*[}][^,{}/]* 116 event_pmu [^,{}/]+[/][^/]*[/][^,{}/]* 117 event [^,{}/]+ 118 bpf_object .*\.(o|bpf) 119 bpf_source .*\.c 120 121 num_dec [0-9]+ 122 num_hex 0x[a-fA-F0-9]+ 123 num_raw_hex [a-fA-F0-9]+ 124 name [a-zA-Z_*?][a-zA-Z0-9_*?.]* 125 name_minus [a-zA-Z_*?][a-zA-Z0-9\-_*?.]* 126 /* If you add a modifier you need to update check_modifier() */ 127 modifier_event [ukhpPGHSDI]+ 128 modifier_bp [rwx]{1,3} 129 130 %% 131 132 %{ 133 { 134 int start_token; 135 136 start_token = parse_events_get_extra(yyscanner); 137 138 if (start_token == PE_START_TERMS) 139 BEGIN(config); 140 else if (start_token == PE_START_EVENTS) 141 BEGIN(event); 142 143 if (start_token) { 144 parse_events_set_extra(NULL, yyscanner); 145 /* 146 * The flex parser does not init locations variable 147 * via the scan_string interface, so we need do the 148 * init in here. 149 */ 150 yycolumn = 0; 151 return start_token; 152 } 153 } 154 %} 155 156 <event>{ 157 158 {group} { 159 BEGIN(INITIAL); 160 REWIND(0); 161 } 162 163 {event_pmu} | 164 {bpf_object} | 165 {bpf_source} | 166 {event} { 167 BEGIN(INITIAL); 168 REWIND(1); 169 return PE_EVENT_NAME; 170 } 171 172 <<EOF>> { 173 BEGIN(INITIAL); 174 REWIND(0); 175 } 176 177 } 178 179 <config>{ 180 /* 181 * Please update parse_events_formats_error_string any time 182 * new static term is added. 183 */ 184 config { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_CONFIG); } 185 config1 { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_CONFIG1); } 186 config2 { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_CONFIG2); } 187 name { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_NAME); } 188 period { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_SAMPLE_PERIOD); } 189 freq { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_SAMPLE_FREQ); } 190 branch_type { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_BRANCH_SAMPLE_TYPE); } 191 time { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_TIME); } 192 call-graph { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_CALLGRAPH); } 193 stack-size { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_STACKSIZE); } 194 inherit { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_INHERIT); } 195 no-inherit { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_NOINHERIT); } 196 , { return ','; } 197 "/" { BEGIN(INITIAL); return '/'; } 198 {name_minus} { return str(yyscanner, PE_NAME); } 199 } 200 201 <mem>{ 202 {modifier_bp} { return str(yyscanner, PE_MODIFIER_BP); } 203 : { return ':'; } 204 "/" { return '/'; } 205 {num_dec} { return value(yyscanner, 10); } 206 {num_hex} { return value(yyscanner, 16); } 207 /* 208 * We need to separate 'mem:' scanner part, in order to get specific 209 * modifier bits parsed out. Otherwise we would need to handle PE_NAME 210 * and we'd need to parse it manually. During the escape from <mem> 211 * state we need to put the escaping char back, so we dont miss it. 212 */ 213 . { unput(*yytext); BEGIN(INITIAL); } 214 /* 215 * We destroy the scanner after reaching EOF, 216 * but anyway just to be sure get back to INIT state. 217 */ 218 <<EOF>> { BEGIN(INITIAL); } 219 } 220 221 cpu-cycles|cycles { return sym(yyscanner, PERF_TYPE_HARDWARE, PERF_COUNT_HW_CPU_CYCLES); } 222 stalled-cycles-frontend|idle-cycles-frontend { return sym(yyscanner, PERF_TYPE_HARDWARE, PERF_COUNT_HW_STALLED_CYCLES_FRONTEND); } 223 stalled-cycles-backend|idle-cycles-backend { return sym(yyscanner, PERF_TYPE_HARDWARE, PERF_COUNT_HW_STALLED_CYCLES_BACKEND); } 224 instructions { return sym(yyscanner, PERF_TYPE_HARDWARE, PERF_COUNT_HW_INSTRUCTIONS); } 225 cache-references { return sym(yyscanner, PERF_TYPE_HARDWARE, PERF_COUNT_HW_CACHE_REFERENCES); } 226 cache-misses { return sym(yyscanner, PERF_TYPE_HARDWARE, PERF_COUNT_HW_CACHE_MISSES); } 227 branch-instructions|branches { return sym(yyscanner, PERF_TYPE_HARDWARE, PERF_COUNT_HW_BRANCH_INSTRUCTIONS); } 228 branch-misses { return sym(yyscanner, PERF_TYPE_HARDWARE, PERF_COUNT_HW_BRANCH_MISSES); } 229 bus-cycles { return sym(yyscanner, PERF_TYPE_HARDWARE, PERF_COUNT_HW_BUS_CYCLES); } 230 ref-cycles { return sym(yyscanner, PERF_TYPE_HARDWARE, PERF_COUNT_HW_REF_CPU_CYCLES); } 231 cpu-clock { return sym(yyscanner, PERF_TYPE_SOFTWARE, PERF_COUNT_SW_CPU_CLOCK); } 232 task-clock { return sym(yyscanner, PERF_TYPE_SOFTWARE, PERF_COUNT_SW_TASK_CLOCK); } 233 page-faults|faults { return sym(yyscanner, PERF_TYPE_SOFTWARE, PERF_COUNT_SW_PAGE_FAULTS); } 234 minor-faults { return sym(yyscanner, PERF_TYPE_SOFTWARE, PERF_COUNT_SW_PAGE_FAULTS_MIN); } 235 major-faults { return sym(yyscanner, PERF_TYPE_SOFTWARE, PERF_COUNT_SW_PAGE_FAULTS_MAJ); } 236 context-switches|cs { return sym(yyscanner, PERF_TYPE_SOFTWARE, PERF_COUNT_SW_CONTEXT_SWITCHES); } 237 cpu-migrations|migrations { return sym(yyscanner, PERF_TYPE_SOFTWARE, PERF_COUNT_SW_CPU_MIGRATIONS); } 238 alignment-faults { return sym(yyscanner, PERF_TYPE_SOFTWARE, PERF_COUNT_SW_ALIGNMENT_FAULTS); } 239 emulation-faults { return sym(yyscanner, PERF_TYPE_SOFTWARE, PERF_COUNT_SW_EMULATION_FAULTS); } 240 dummy { return sym(yyscanner, PERF_TYPE_SOFTWARE, PERF_COUNT_SW_DUMMY); } 241 242 /* 243 * We have to handle the kernel PMU event cycles-ct/cycles-t/mem-loads/mem-stores separately. 244 * Because the prefix cycles is mixed up with cpu-cycles. 245 * loads and stores are mixed up with cache event 246 */ 247 cycles-ct { return str(yyscanner, PE_KERNEL_PMU_EVENT); } 248 cycles-t { return str(yyscanner, PE_KERNEL_PMU_EVENT); } 249 mem-loads { return str(yyscanner, PE_KERNEL_PMU_EVENT); } 250 mem-stores { return str(yyscanner, PE_KERNEL_PMU_EVENT); } 251 252 L1-dcache|l1-d|l1d|L1-data | 253 L1-icache|l1-i|l1i|L1-instruction | 254 LLC|L2 | 255 dTLB|d-tlb|Data-TLB | 256 iTLB|i-tlb|Instruction-TLB | 257 branch|branches|bpu|btb|bpc | 258 node { return str(yyscanner, PE_NAME_CACHE_TYPE); } 259 260 load|loads|read | 261 store|stores|write | 262 prefetch|prefetches | 263 speculative-read|speculative-load | 264 refs|Reference|ops|access | 265 misses|miss { return str(yyscanner, PE_NAME_CACHE_OP_RESULT); } 266 267 mem: { BEGIN(mem); return PE_PREFIX_MEM; } 268 r{num_raw_hex} { return raw(yyscanner); } 269 {num_dec} { return value(yyscanner, 10); } 270 {num_hex} { return value(yyscanner, 16); } 271 272 {modifier_event} { return str(yyscanner, PE_MODIFIER_EVENT); } 273 {bpf_object} { return str(yyscanner, PE_BPF_OBJECT); } 274 {bpf_source} { return str(yyscanner, PE_BPF_SOURCE); } 275 {name} { return pmu_str_check(yyscanner); } 276 "/" { BEGIN(config); return '/'; } 277 - { return '-'; } 278 , { BEGIN(event); return ','; } 279 : { return ':'; } 280 "{" { BEGIN(event); return '{'; } 281 "}" { return '}'; } 282 = { return '='; } 283 \n { } 284 . { } 285 286 %% 287 288 int parse_events_wrap(void *scanner __maybe_unused) 289 { 290 return 1; 291 } 292