4 %option prefix="parse_events_"
6 %option bison-locations
12 #include "parse-events.h"
13 #include "parse-events-bison.h"
15 char *parse_events_get_text(yyscan_t yyscanner);
16 YYSTYPE *parse_events_get_lval(yyscan_t yyscanner);
18 static int __value(YYSTYPE *yylval, char *str, int base, int token)
23 num = strtoull(str, NULL, base);
31 static int value(yyscan_t scanner, int base)
33 YYSTYPE *yylval = parse_events_get_lval(scanner);
34 char *text = parse_events_get_text(scanner);
36 return __value(yylval, text, base, PE_VALUE);
39 static int raw(yyscan_t scanner)
41 YYSTYPE *yylval = parse_events_get_lval(scanner);
42 char *text = parse_events_get_text(scanner);
44 return __value(yylval, text + 1, 16, PE_RAW);
47 static int str(yyscan_t scanner, int token)
49 YYSTYPE *yylval = parse_events_get_lval(scanner);
50 char *text = parse_events_get_text(scanner);
52 yylval->str = strdup(text);
57 * This function is called when the parser gets two kind of input:
59 * @cfg1 or @cfg2=config
61 * The leading '@' is stripped off before 'cfg1' and 'cfg2=config' are given to
62 * bison. In the latter case it is necessary to keep the string intact so that
63 * the PMU kernel driver can determine what configurable is associated to
66 static int drv_str(yyscan_t scanner, int token)
68 YYSTYPE *yylval = parse_events_get_lval(scanner);
69 char *text = parse_events_get_text(scanner);
71 /* Strip off the '@' */
72 yylval->str = strdup(text + 1);
76 #define REWIND(__alloc) \
78 YYSTYPE *__yylval = parse_events_get_lval(yyscanner); \
79 char *text = parse_events_get_text(yyscanner); \
82 __yylval->str = strdup(text); \
84 yycolumn -= strlen(text); \
88 static int pmu_str_check(yyscan_t scanner)
90 YYSTYPE *yylval = parse_events_get_lval(scanner);
91 char *text = parse_events_get_text(scanner);
93 yylval->str = strdup(text);
94 switch (perf_pmu__parse_check(text)) {
95 case PMU_EVENT_SYMBOL_PREFIX:
96 return PE_PMU_EVENT_PRE;
97 case PMU_EVENT_SYMBOL_SUFFIX:
98 return PE_PMU_EVENT_SUF;
99 case PMU_EVENT_SYMBOL:
100 return PE_KERNEL_PMU_EVENT;
106 static int sym(yyscan_t scanner, int type, int config)
108 YYSTYPE *yylval = parse_events_get_lval(scanner);
110 yylval->num = (type << 16) + config;
111 return type == PERF_TYPE_HARDWARE ? PE_VALUE_SYM_HW : PE_VALUE_SYM_SW;
114 static int term(yyscan_t scanner, int type)
116 YYSTYPE *yylval = parse_events_get_lval(scanner);
122 #define YY_USER_ACTION \
124 yylloc->last_column = yylloc->first_column; \
125 yylloc->first_column = yycolumn; \
126 yycolumn += yyleng; \
136 group [^,{}/]*[{][^}]*[}][^,{}/]*
137 event_pmu [^,{}/]+[/][^/]*[/][^,{}/]*
139 bpf_object [^,{}]+\.(o|bpf)
140 bpf_source [^,{}]+\.c
143 num_hex 0x[a-fA-F0-9]+
144 num_raw_hex [a-fA-F0-9]+
145 name [a-zA-Z_*?][a-zA-Z0-9_*?.]*
146 name_minus [a-zA-Z_*?][a-zA-Z0-9\-_*?.:]*
147 drv_cfg_term [a-zA-Z0-9_\.]+(=[a-zA-Z0-9_*?\.:]+)?
148 /* If you add a modifier you need to update check_modifier() */
149 modifier_event [ukhpPGHSDI]+
150 modifier_bp [rwx]{1,3}
158 start_token = parse_events_get_extra(yyscanner);
160 if (start_token == PE_START_TERMS)
162 else if (start_token == PE_START_EVENTS)
166 parse_events_set_extra(NULL, yyscanner);
168 * The flex parser does not init locations variable
169 * via the scan_string interface, so we need do the
191 return PE_EVENT_NAME;
202 "]" { BEGIN(config); return ']'; }
203 {num_dec} { return value(yyscanner, 10); }
204 {num_hex} { return value(yyscanner, 16); }
206 "\.\.\." { return PE_ARRAY_RANGE; }
211 * Please update config_term_names when new static term is added.
213 config { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_CONFIG); }
214 config1 { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_CONFIG1); }
215 config2 { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_CONFIG2); }
216 name { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_NAME); }
217 period { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_SAMPLE_PERIOD); }
218 freq { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_SAMPLE_FREQ); }
219 branch_type { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_BRANCH_SAMPLE_TYPE); }
220 time { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_TIME); }
221 call-graph { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_CALLGRAPH); }
222 stack-size { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_STACKSIZE); }
223 max-stack { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_MAX_STACK); }
224 inherit { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_INHERIT); }
225 no-inherit { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_NOINHERIT); }
226 overwrite { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_OVERWRITE); }
227 no-overwrite { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_NOOVERWRITE); }
229 "/" { BEGIN(INITIAL); return '/'; }
230 {name_minus} { return str(yyscanner, PE_NAME); }
231 \[all\] { return PE_ARRAY_ALL; }
232 "[" { BEGIN(array); return '['; }
233 @{drv_cfg_term} { return drv_str(yyscanner, PE_DRV_CFG_TERM); }
237 {modifier_bp} { return str(yyscanner, PE_MODIFIER_BP); }
240 {num_dec} { return value(yyscanner, 10); }
241 {num_hex} { return value(yyscanner, 16); }
243 * We need to separate 'mem:' scanner part, in order to get specific
244 * modifier bits parsed out. Otherwise we would need to handle PE_NAME
245 * and we'd need to parse it manually. During the escape from <mem>
246 * state we need to put the escaping char back, so we dont miss it.
248 . { unput(*yytext); BEGIN(INITIAL); }
250 * We destroy the scanner after reaching EOF,
251 * but anyway just to be sure get back to INIT state.
253 <<EOF>> { BEGIN(INITIAL); }
256 cpu-cycles|cycles { return sym(yyscanner, PERF_TYPE_HARDWARE, PERF_COUNT_HW_CPU_CYCLES); }
257 stalled-cycles-frontend|idle-cycles-frontend { return sym(yyscanner, PERF_TYPE_HARDWARE, PERF_COUNT_HW_STALLED_CYCLES_FRONTEND); }
258 stalled-cycles-backend|idle-cycles-backend { return sym(yyscanner, PERF_TYPE_HARDWARE, PERF_COUNT_HW_STALLED_CYCLES_BACKEND); }
259 instructions { return sym(yyscanner, PERF_TYPE_HARDWARE, PERF_COUNT_HW_INSTRUCTIONS); }
260 cache-references { return sym(yyscanner, PERF_TYPE_HARDWARE, PERF_COUNT_HW_CACHE_REFERENCES); }
261 cache-misses { return sym(yyscanner, PERF_TYPE_HARDWARE, PERF_COUNT_HW_CACHE_MISSES); }
262 branch-instructions|branches { return sym(yyscanner, PERF_TYPE_HARDWARE, PERF_COUNT_HW_BRANCH_INSTRUCTIONS); }
263 branch-misses { return sym(yyscanner, PERF_TYPE_HARDWARE, PERF_COUNT_HW_BRANCH_MISSES); }
264 bus-cycles { return sym(yyscanner, PERF_TYPE_HARDWARE, PERF_COUNT_HW_BUS_CYCLES); }
265 ref-cycles { return sym(yyscanner, PERF_TYPE_HARDWARE, PERF_COUNT_HW_REF_CPU_CYCLES); }
266 cpu-clock { return sym(yyscanner, PERF_TYPE_SOFTWARE, PERF_COUNT_SW_CPU_CLOCK); }
267 task-clock { return sym(yyscanner, PERF_TYPE_SOFTWARE, PERF_COUNT_SW_TASK_CLOCK); }
268 page-faults|faults { return sym(yyscanner, PERF_TYPE_SOFTWARE, PERF_COUNT_SW_PAGE_FAULTS); }
269 minor-faults { return sym(yyscanner, PERF_TYPE_SOFTWARE, PERF_COUNT_SW_PAGE_FAULTS_MIN); }
270 major-faults { return sym(yyscanner, PERF_TYPE_SOFTWARE, PERF_COUNT_SW_PAGE_FAULTS_MAJ); }
271 context-switches|cs { return sym(yyscanner, PERF_TYPE_SOFTWARE, PERF_COUNT_SW_CONTEXT_SWITCHES); }
272 cpu-migrations|migrations { return sym(yyscanner, PERF_TYPE_SOFTWARE, PERF_COUNT_SW_CPU_MIGRATIONS); }
273 alignment-faults { return sym(yyscanner, PERF_TYPE_SOFTWARE, PERF_COUNT_SW_ALIGNMENT_FAULTS); }
274 emulation-faults { return sym(yyscanner, PERF_TYPE_SOFTWARE, PERF_COUNT_SW_EMULATION_FAULTS); }
275 dummy { return sym(yyscanner, PERF_TYPE_SOFTWARE, PERF_COUNT_SW_DUMMY); }
276 bpf-output { return sym(yyscanner, PERF_TYPE_SOFTWARE, PERF_COUNT_SW_BPF_OUTPUT); }
279 * We have to handle the kernel PMU event cycles-ct/cycles-t/mem-loads/mem-stores separately.
280 * Because the prefix cycles is mixed up with cpu-cycles.
281 * loads and stores are mixed up with cache event
283 cycles-ct { return str(yyscanner, PE_KERNEL_PMU_EVENT); }
284 cycles-t { return str(yyscanner, PE_KERNEL_PMU_EVENT); }
285 mem-loads { return str(yyscanner, PE_KERNEL_PMU_EVENT); }
286 mem-stores { return str(yyscanner, PE_KERNEL_PMU_EVENT); }
287 topdown-[a-z-]+ { return str(yyscanner, PE_KERNEL_PMU_EVENT); }
289 L1-dcache|l1-d|l1d|L1-data |
290 L1-icache|l1-i|l1i|L1-instruction |
292 dTLB|d-tlb|Data-TLB |
293 iTLB|i-tlb|Instruction-TLB |
294 branch|branches|bpu|btb|bpc |
295 node { return str(yyscanner, PE_NAME_CACHE_TYPE); }
299 prefetch|prefetches |
300 speculative-read|speculative-load |
301 refs|Reference|ops|access |
302 misses|miss { return str(yyscanner, PE_NAME_CACHE_OP_RESULT); }
304 mem: { BEGIN(mem); return PE_PREFIX_MEM; }
305 r{num_raw_hex} { return raw(yyscanner); }
306 {num_dec} { return value(yyscanner, 10); }
307 {num_hex} { return value(yyscanner, 16); }
309 {modifier_event} { return str(yyscanner, PE_MODIFIER_EVENT); }
310 {bpf_object} { return str(yyscanner, PE_BPF_OBJECT); }
311 {bpf_source} { return str(yyscanner, PE_BPF_SOURCE); }
312 {name} { return pmu_str_check(yyscanner); }
313 "/" { BEGIN(config); return '/'; }
315 , { BEGIN(event); return ','; }
317 "{" { BEGIN(event); return '{'; }
325 int parse_events_wrap(void *scanner __maybe_unused)