1 2 %option reentrant 3 %option bison-bridge 4 %option prefix="parse_events_" 5 %option stack 6 7 %{ 8 #include <errno.h> 9 #include "../perf.h" 10 #include "parse-events-bison.h" 11 #include "parse-events.h" 12 13 char *parse_events_get_text(yyscan_t yyscanner); 14 YYSTYPE *parse_events_get_lval(yyscan_t yyscanner); 15 16 static int __value(YYSTYPE *yylval, char *str, int base, int token) 17 { 18 u64 num; 19 20 errno = 0; 21 num = strtoull(str, NULL, base); 22 if (errno) 23 return PE_ERROR; 24 25 yylval->num = num; 26 return token; 27 } 28 29 static int value(yyscan_t scanner, int base) 30 { 31 YYSTYPE *yylval = parse_events_get_lval(scanner); 32 char *text = parse_events_get_text(scanner); 33 34 return __value(yylval, text, base, PE_VALUE); 35 } 36 37 static int raw(yyscan_t scanner) 38 { 39 YYSTYPE *yylval = parse_events_get_lval(scanner); 40 char *text = parse_events_get_text(scanner); 41 42 return __value(yylval, text + 1, 16, PE_RAW); 43 } 44 45 static int str(yyscan_t scanner, int token) 46 { 47 YYSTYPE *yylval = parse_events_get_lval(scanner); 48 char *text = parse_events_get_text(scanner); 49 50 yylval->str = strdup(text); 51 return token; 52 } 53 54 static int pmu_str_check(yyscan_t scanner) 55 { 56 YYSTYPE *yylval = parse_events_get_lval(scanner); 57 char *text = parse_events_get_text(scanner); 58 59 yylval->str = strdup(text); 60 switch (perf_pmu__parse_check(text)) { 61 case PMU_EVENT_SYMBOL_PREFIX: 62 return PE_PMU_EVENT_PRE; 63 case PMU_EVENT_SYMBOL_SUFFIX: 64 return PE_PMU_EVENT_SUF; 65 case PMU_EVENT_SYMBOL: 66 return PE_KERNEL_PMU_EVENT; 67 default: 68 return PE_NAME; 69 } 70 } 71 72 static int sym(yyscan_t scanner, int type, int config) 73 { 74 YYSTYPE *yylval = parse_events_get_lval(scanner); 75 76 yylval->num = (type << 16) + config; 77 return type == PERF_TYPE_HARDWARE ? PE_VALUE_SYM_HW : PE_VALUE_SYM_SW; 78 } 79 80 static int term(yyscan_t scanner, int type) 81 { 82 YYSTYPE *yylval = parse_events_get_lval(scanner); 83 84 yylval->num = type; 85 return PE_TERM; 86 } 87 88 %} 89 90 %x mem 91 %s config 92 %x event 93 94 group [^,{}/]*[{][^}]*[}][^,{}/]* 95 event_pmu [^,{}/]+[/][^/]*[/][^,{}/]* 96 event [^,{}/]+ 97 98 num_dec [0-9]+ 99 num_hex 0x[a-fA-F0-9]+ 100 num_raw_hex [a-fA-F0-9]+ 101 name [a-zA-Z_*?][a-zA-Z0-9_*?]* 102 name_minus [a-zA-Z_*?][a-zA-Z0-9\-_*?]* 103 /* If you add a modifier you need to update check_modifier() */ 104 modifier_event [ukhpGHSD]+ 105 modifier_bp [rwx]{1,3} 106 107 %% 108 109 %{ 110 { 111 int start_token; 112 113 start_token = parse_events_get_extra(yyscanner); 114 115 if (start_token == PE_START_TERMS) 116 BEGIN(config); 117 else if (start_token == PE_START_EVENTS) 118 BEGIN(event); 119 120 if (start_token) { 121 parse_events_set_extra(NULL, yyscanner); 122 return start_token; 123 } 124 } 125 %} 126 127 <event>{ 128 129 {group} { 130 BEGIN(INITIAL); yyless(0); 131 } 132 133 {event_pmu} | 134 {event} { 135 str(yyscanner, PE_EVENT_NAME); 136 BEGIN(INITIAL); yyless(0); 137 return PE_EVENT_NAME; 138 } 139 140 . | 141 <<EOF>> { 142 BEGIN(INITIAL); yyless(0); 143 } 144 145 } 146 147 <config>{ 148 config { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_CONFIG); } 149 config1 { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_CONFIG1); } 150 config2 { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_CONFIG2); } 151 name { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_NAME); } 152 period { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_SAMPLE_PERIOD); } 153 branch_type { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_BRANCH_SAMPLE_TYPE); } 154 , { return ','; } 155 "/" { BEGIN(INITIAL); return '/'; } 156 {name_minus} { return str(yyscanner, PE_NAME); } 157 } 158 159 <mem>{ 160 {modifier_bp} { return str(yyscanner, PE_MODIFIER_BP); } 161 : { return ':'; } 162 {num_dec} { return value(yyscanner, 10); } 163 {num_hex} { return value(yyscanner, 16); } 164 /* 165 * We need to separate 'mem:' scanner part, in order to get specific 166 * modifier bits parsed out. Otherwise we would need to handle PE_NAME 167 * and we'd need to parse it manually. During the escape from <mem> 168 * state we need to put the escaping char back, so we dont miss it. 169 */ 170 . { unput(*yytext); BEGIN(INITIAL); } 171 /* 172 * We destroy the scanner after reaching EOF, 173 * but anyway just to be sure get back to INIT state. 174 */ 175 <<EOF>> { BEGIN(INITIAL); } 176 } 177 178 cpu-cycles|cycles { return sym(yyscanner, PERF_TYPE_HARDWARE, PERF_COUNT_HW_CPU_CYCLES); } 179 stalled-cycles-frontend|idle-cycles-frontend { return sym(yyscanner, PERF_TYPE_HARDWARE, PERF_COUNT_HW_STALLED_CYCLES_FRONTEND); } 180 stalled-cycles-backend|idle-cycles-backend { return sym(yyscanner, PERF_TYPE_HARDWARE, PERF_COUNT_HW_STALLED_CYCLES_BACKEND); } 181 instructions { return sym(yyscanner, PERF_TYPE_HARDWARE, PERF_COUNT_HW_INSTRUCTIONS); } 182 cache-references { return sym(yyscanner, PERF_TYPE_HARDWARE, PERF_COUNT_HW_CACHE_REFERENCES); } 183 cache-misses { return sym(yyscanner, PERF_TYPE_HARDWARE, PERF_COUNT_HW_CACHE_MISSES); } 184 branch-instructions|branches { return sym(yyscanner, PERF_TYPE_HARDWARE, PERF_COUNT_HW_BRANCH_INSTRUCTIONS); } 185 branch-misses { return sym(yyscanner, PERF_TYPE_HARDWARE, PERF_COUNT_HW_BRANCH_MISSES); } 186 bus-cycles { return sym(yyscanner, PERF_TYPE_HARDWARE, PERF_COUNT_HW_BUS_CYCLES); } 187 ref-cycles { return sym(yyscanner, PERF_TYPE_HARDWARE, PERF_COUNT_HW_REF_CPU_CYCLES); } 188 cpu-clock { return sym(yyscanner, PERF_TYPE_SOFTWARE, PERF_COUNT_SW_CPU_CLOCK); } 189 task-clock { return sym(yyscanner, PERF_TYPE_SOFTWARE, PERF_COUNT_SW_TASK_CLOCK); } 190 page-faults|faults { return sym(yyscanner, PERF_TYPE_SOFTWARE, PERF_COUNT_SW_PAGE_FAULTS); } 191 minor-faults { return sym(yyscanner, PERF_TYPE_SOFTWARE, PERF_COUNT_SW_PAGE_FAULTS_MIN); } 192 major-faults { return sym(yyscanner, PERF_TYPE_SOFTWARE, PERF_COUNT_SW_PAGE_FAULTS_MAJ); } 193 context-switches|cs { return sym(yyscanner, PERF_TYPE_SOFTWARE, PERF_COUNT_SW_CONTEXT_SWITCHES); } 194 cpu-migrations|migrations { return sym(yyscanner, PERF_TYPE_SOFTWARE, PERF_COUNT_SW_CPU_MIGRATIONS); } 195 alignment-faults { return sym(yyscanner, PERF_TYPE_SOFTWARE, PERF_COUNT_SW_ALIGNMENT_FAULTS); } 196 emulation-faults { return sym(yyscanner, PERF_TYPE_SOFTWARE, PERF_COUNT_SW_EMULATION_FAULTS); } 197 dummy { return sym(yyscanner, PERF_TYPE_SOFTWARE, PERF_COUNT_SW_DUMMY); } 198 199 /* 200 * We have to handle the kernel PMU event cycles-ct/cycles-t/mem-loads/mem-stores separately. 201 * Because the prefix cycles is mixed up with cpu-cycles. 202 * loads and stores are mixed up with cache event 203 */ 204 cycles-ct { return str(yyscanner, PE_KERNEL_PMU_EVENT); } 205 cycles-t { return str(yyscanner, PE_KERNEL_PMU_EVENT); } 206 mem-loads { return str(yyscanner, PE_KERNEL_PMU_EVENT); } 207 mem-stores { return str(yyscanner, PE_KERNEL_PMU_EVENT); } 208 209 L1-dcache|l1-d|l1d|L1-data | 210 L1-icache|l1-i|l1i|L1-instruction | 211 LLC|L2 | 212 dTLB|d-tlb|Data-TLB | 213 iTLB|i-tlb|Instruction-TLB | 214 branch|branches|bpu|btb|bpc | 215 node { return str(yyscanner, PE_NAME_CACHE_TYPE); } 216 217 load|loads|read | 218 store|stores|write | 219 prefetch|prefetches | 220 speculative-read|speculative-load | 221 refs|Reference|ops|access | 222 misses|miss { return str(yyscanner, PE_NAME_CACHE_OP_RESULT); } 223 224 mem: { BEGIN(mem); return PE_PREFIX_MEM; } 225 r{num_raw_hex} { return raw(yyscanner); } 226 {num_dec} { return value(yyscanner, 10); } 227 {num_hex} { return value(yyscanner, 16); } 228 229 {modifier_event} { return str(yyscanner, PE_MODIFIER_EVENT); } 230 {name} { return pmu_str_check(yyscanner); } 231 "/" { BEGIN(config); return '/'; } 232 - { return '-'; } 233 , { BEGIN(event); return ','; } 234 : { return ':'; } 235 "{" { BEGIN(event); return '{'; } 236 "}" { return '}'; } 237 = { return '='; } 238 \n { } 239 . { } 240 241 %% 242 243 int parse_events_wrap(void *scanner __maybe_unused) 244 { 245 return 1; 246 } 247