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1
2%option prefix="parse_events_"
3%option stack
4
5%{
6#include <errno.h>
7#include "../perf.h"
8#include "parse-events-bison.h"
9#include "parse-events.h"
10
11static int __value(char *str, int base, int token)
12{
13 long num;
14
15 errno = 0;
16 num = strtoul(str, NULL, base);
17 if (errno)
18 return PE_ERROR;
19
20 parse_events_lval.num = num;
21 return token;
22}
23
24static int value(int base)
25{
26 return __value(parse_events_text, base, PE_VALUE);
27}
28
29static int raw(void)
30{
31 return __value(parse_events_text + 1, 16, PE_RAW);
32}
33
34static int str(int token)
35{
36 parse_events_lval.str = strdup(parse_events_text);
37 return token;
38}
39
40static int sym(int type, int config)
41{
42 parse_events_lval.num = (type << 16) + config;
43 return PE_VALUE_SYM;
44}
45
46static int term(int type)
47{
48 parse_events_lval.num = type;
49 return PE_TERM;
50}
51
52%}
53
54%x mem
55
56num_dec [0-9]+
57num_hex 0x[a-fA-F0-9]+
58num_raw_hex [a-fA-F0-9]+
59name [a-zA-Z_*?][a-zA-Z0-9_*?]*
60modifier_event [ukhpGH]{1,8}
61modifier_bp [rwx]
62
63%%
64cpu-cycles|cycles { return sym(PERF_TYPE_HARDWARE, PERF_COUNT_HW_CPU_CYCLES); }
65stalled-cycles-frontend|idle-cycles-frontend { return sym(PERF_TYPE_HARDWARE, PERF_COUNT_HW_STALLED_CYCLES_FRONTEND); }
66stalled-cycles-backend|idle-cycles-backend { return sym(PERF_TYPE_HARDWARE, PERF_COUNT_HW_STALLED_CYCLES_BACKEND); }
67instructions { return sym(PERF_TYPE_HARDWARE, PERF_COUNT_HW_INSTRUCTIONS); }
68cache-references { return sym(PERF_TYPE_HARDWARE, PERF_COUNT_HW_CACHE_REFERENCES); }
69cache-misses { return sym(PERF_TYPE_HARDWARE, PERF_COUNT_HW_CACHE_MISSES); }
70branch-instructions|branches { return sym(PERF_TYPE_HARDWARE, PERF_COUNT_HW_BRANCH_INSTRUCTIONS); }
71branch-misses { return sym(PERF_TYPE_HARDWARE, PERF_COUNT_HW_BRANCH_MISSES); }
72bus-cycles { return sym(PERF_TYPE_HARDWARE, PERF_COUNT_HW_BUS_CYCLES); }
73ref-cycles { return sym(PERF_TYPE_HARDWARE, PERF_COUNT_HW_REF_CPU_CYCLES); }
74cpu-clock { return sym(PERF_TYPE_SOFTWARE, PERF_COUNT_SW_CPU_CLOCK); }
75task-clock { return sym(PERF_TYPE_SOFTWARE, PERF_COUNT_SW_TASK_CLOCK); }
76page-faults|faults { return sym(PERF_TYPE_SOFTWARE, PERF_COUNT_SW_PAGE_FAULTS); }
77minor-faults { return sym(PERF_TYPE_SOFTWARE, PERF_COUNT_SW_PAGE_FAULTS_MIN); }
78major-faults { return sym(PERF_TYPE_SOFTWARE, PERF_COUNT_SW_PAGE_FAULTS_MAJ); }
79context-switches|cs { return sym(PERF_TYPE_SOFTWARE, PERF_COUNT_SW_CONTEXT_SWITCHES); }
80cpu-migrations|migrations { return sym(PERF_TYPE_SOFTWARE, PERF_COUNT_SW_CPU_MIGRATIONS); }
81alignment-faults { return sym(PERF_TYPE_SOFTWARE, PERF_COUNT_SW_ALIGNMENT_FAULTS); }
82emulation-faults { return sym(PERF_TYPE_SOFTWARE, PERF_COUNT_SW_EMULATION_FAULTS); }
83
84L1-dcache|l1-d|l1d|L1-data |
85L1-icache|l1-i|l1i|L1-instruction |
86LLC|L2 |
87dTLB|d-tlb|Data-TLB |
88iTLB|i-tlb|Instruction-TLB |
89branch|branches|bpu|btb|bpc |
90node { return str(PE_NAME_CACHE_TYPE); }
91
92load|loads|read |
93store|stores|write |
94prefetch|prefetches |
95speculative-read|speculative-load |
96refs|Reference|ops|access |
97misses|miss { return str(PE_NAME_CACHE_OP_RESULT); }
98
99 /*
100 * These are event config hardcoded term names to be specified
101 * within xxx/.../ syntax. So far we dont clash with other names,
102 * so we can put them here directly. In case the we have a conflict
103 * in future, this needs to go into '//' condition block.
104 */
105config { return term(PARSE_EVENTS__TERM_TYPE_CONFIG); }
106config1 { return term(PARSE_EVENTS__TERM_TYPE_CONFIG1); }
107config2 { return term(PARSE_EVENTS__TERM_TYPE_CONFIG2); }
108name { return term(PARSE_EVENTS__TERM_TYPE_NAME); }
109period { return term(PARSE_EVENTS__TERM_TYPE_SAMPLE_PERIOD); }
110branch_type { return term(PARSE_EVENTS__TERM_TYPE_BRANCH_SAMPLE_TYPE); }
111
112mem: { BEGIN(mem); return PE_PREFIX_MEM; }
113r{num_raw_hex} { return raw(); }
114{num_dec} { return value(10); }
115{num_hex} { return value(16); }
116
117{modifier_event} { return str(PE_MODIFIER_EVENT); }
118{name} { return str(PE_NAME); }
119"/" { return '/'; }
120- { return '-'; }
121, { return ','; }
122: { return ':'; }
123= { return '='; }
124
125<mem>{
126{modifier_bp} { return str(PE_MODIFIER_BP); }
127: { return ':'; }
128{num_dec} { return value(10); }
129{num_hex} { return value(16); }
130 /*
131 * We need to separate 'mem:' scanner part, in order to get specific
132 * modifier bits parsed out. Otherwise we would need to handle PE_NAME
133 * and we'd need to parse it manually. During the escape from <mem>
134 * state we need to put the escaping char back, so we dont miss it.
135 */
136. { unput(*parse_events_text); BEGIN(INITIAL); }
137 /*
138 * We destroy the scanner after reaching EOF,
139 * but anyway just to be sure get back to INIT state.
140 */
141<<EOF>> { BEGIN(INITIAL); }
142}
143
144%%
145
146int parse_events_wrap(void)
147{
148 return 1;
149}
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 "../perf.h"
16#include "parse-events.h"
17#include "parse-events-bison.h"
18#include "evsel.h"
19
20char *parse_events_get_text(yyscan_t yyscanner);
21YYSTYPE *parse_events_get_lval(yyscan_t yyscanner);
22
23static int __value(YYSTYPE *yylval, char *str, int base, int token)
24{
25 u64 num;
26
27 errno = 0;
28 num = strtoull(str, NULL, base);
29 if (errno)
30 return PE_ERROR;
31
32 yylval->num = num;
33 return token;
34}
35
36static int value(yyscan_t scanner, int base)
37{
38 YYSTYPE *yylval = parse_events_get_lval(scanner);
39 char *text = parse_events_get_text(scanner);
40
41 return __value(yylval, text, base, PE_VALUE);
42}
43
44static int str(yyscan_t scanner, int token)
45{
46 YYSTYPE *yylval = parse_events_get_lval(scanner);
47 char *text = parse_events_get_text(scanner);
48
49 if (text[0] != '\'') {
50 yylval->str = strdup(text);
51 } else {
52 /*
53 * If a text tag specified on the command line
54 * contains opening single quite ' then it is
55 * expected that the tag ends with single quote
56 * as well, like this:
57 * name=\'CPU_CLK_UNHALTED.THREAD:cmask=1\'
58 * quotes need to be escaped to bypass shell
59 * processing.
60 */
61 yylval->str = strndup(&text[1], strlen(text) - 2);
62 }
63
64 return token;
65}
66
67static int raw(yyscan_t scanner)
68{
69 YYSTYPE *yylval = parse_events_get_lval(scanner);
70 char *text = parse_events_get_text(scanner);
71
72 if (perf_pmu__parse_check(text) == PMU_EVENT_SYMBOL)
73 return str(scanner, PE_NAME);
74
75 return __value(yylval, text + 1, 16, PE_RAW);
76}
77
78static bool isbpf_suffix(char *text)
79{
80 int len = strlen(text);
81
82 if (len < 2)
83 return false;
84 if ((text[len - 1] == 'c' || text[len - 1] == 'o') &&
85 text[len - 2] == '.')
86 return true;
87 if (len > 4 && !strcmp(text + len - 4, ".obj"))
88 return true;
89 return false;
90}
91
92static bool isbpf(yyscan_t scanner)
93{
94 char *text = parse_events_get_text(scanner);
95 struct stat st;
96
97 if (!isbpf_suffix(text))
98 return false;
99
100 return stat(text, &st) == 0;
101}
102
103/*
104 * This function is called when the parser gets two kind of input:
105 *
106 * @cfg1 or @cfg2=config
107 *
108 * The leading '@' is stripped off before 'cfg1' and 'cfg2=config' are given to
109 * bison. In the latter case it is necessary to keep the string intact so that
110 * the PMU kernel driver can determine what configurable is associated to
111 * 'config'.
112 */
113static int drv_str(yyscan_t scanner, int token)
114{
115 YYSTYPE *yylval = parse_events_get_lval(scanner);
116 char *text = parse_events_get_text(scanner);
117
118 /* Strip off the '@' */
119 yylval->str = strdup(text + 1);
120 return token;
121}
122
123#define REWIND(__alloc) \
124do { \
125 YYSTYPE *__yylval = parse_events_get_lval(yyscanner); \
126 char *text = parse_events_get_text(yyscanner); \
127 \
128 if (__alloc) \
129 __yylval->str = strdup(text); \
130 \
131 yycolumn -= strlen(text); \
132 yyless(0); \
133} while (0)
134
135static int pmu_str_check(yyscan_t scanner, struct parse_events_state *parse_state)
136{
137 YYSTYPE *yylval = parse_events_get_lval(scanner);
138 char *text = parse_events_get_text(scanner);
139
140 yylval->str = strdup(text);
141
142 if (parse_state->fake_pmu)
143 return PE_PMU_EVENT_FAKE;
144
145 switch (perf_pmu__parse_check(text)) {
146 case PMU_EVENT_SYMBOL_PREFIX:
147 return PE_PMU_EVENT_PRE;
148 case PMU_EVENT_SYMBOL_SUFFIX:
149 return PE_PMU_EVENT_SUF;
150 case PMU_EVENT_SYMBOL:
151 return PE_KERNEL_PMU_EVENT;
152 default:
153 return PE_NAME;
154 }
155}
156
157static int sym(yyscan_t scanner, int type, int config)
158{
159 YYSTYPE *yylval = parse_events_get_lval(scanner);
160
161 yylval->num = (type << 16) + config;
162 return type == PERF_TYPE_HARDWARE ? PE_VALUE_SYM_HW : PE_VALUE_SYM_SW;
163}
164
165static int tool(yyscan_t scanner, enum perf_tool_event event)
166{
167 YYSTYPE *yylval = parse_events_get_lval(scanner);
168
169 yylval->num = event;
170 return PE_VALUE_SYM_TOOL;
171}
172
173static int term(yyscan_t scanner, int type)
174{
175 YYSTYPE *yylval = parse_events_get_lval(scanner);
176
177 yylval->num = type;
178 return PE_TERM;
179}
180
181#define YY_USER_ACTION \
182do { \
183 yylloc->last_column = yylloc->first_column; \
184 yylloc->first_column = yycolumn; \
185 yycolumn += yyleng; \
186} while (0);
187
188#define USER_REJECT \
189 yycolumn -= yyleng; \
190 REJECT
191
192%}
193
194%x mem
195%s config
196%x event
197%x array
198
199group [^,{}/]*[{][^}]*[}][^,{}/]*
200event_pmu [^,{}/]+[/][^/]*[/][^,{}/]*
201event [^,{}/]+
202bpf_object [^,{}]+\.(o|bpf)[a-zA-Z0-9._]*
203bpf_source [^,{}]+\.c[a-zA-Z0-9._]*
204
205num_dec [0-9]+
206num_hex 0x[a-fA-F0-9]+
207num_raw_hex [a-fA-F0-9]+
208name [a-zA-Z_*?\[\]][a-zA-Z0-9_*?.\[\]]*
209name_tag [\'][a-zA-Z_*?\[\]][a-zA-Z0-9_*?\-,\.\[\]:=]*[\']
210name_minus [a-zA-Z_*?][a-zA-Z0-9\-_*?.:]*
211drv_cfg_term [a-zA-Z0-9_\.]+(=[a-zA-Z0-9_*?\.:]+)?
212/* If you add a modifier you need to update check_modifier() */
213modifier_event [ukhpPGHSDIW]+
214modifier_bp [rwx]{1,3}
215
216%%
217
218%{
219 struct parse_events_state *_parse_state = parse_events_get_extra(yyscanner);
220
221 {
222 int start_token = _parse_state->stoken;
223
224 if (start_token == PE_START_TERMS)
225 BEGIN(config);
226 else if (start_token == PE_START_EVENTS)
227 BEGIN(event);
228
229 if (start_token) {
230 _parse_state->stoken = 0;
231 /*
232 * The flex parser does not init locations variable
233 * via the scan_string interface, so we need do the
234 * init in here.
235 */
236 yycolumn = 0;
237 return start_token;
238 }
239 }
240%}
241
242<event>{
243
244{group} {
245 BEGIN(INITIAL);
246 REWIND(0);
247 }
248
249{event_pmu} |
250{bpf_object} |
251{bpf_source} |
252{event} {
253 BEGIN(INITIAL);
254 REWIND(1);
255 return PE_EVENT_NAME;
256 }
257
258<<EOF>> {
259 BEGIN(INITIAL);
260 REWIND(0);
261 }
262, {
263 return ',';
264 }
265}
266
267<array>{
268"]" { BEGIN(config); return ']'; }
269{num_dec} { return value(yyscanner, 10); }
270{num_hex} { return value(yyscanner, 16); }
271, { return ','; }
272"\.\.\." { return PE_ARRAY_RANGE; }
273}
274
275<config>{
276 /*
277 * Please update config_term_names when new static term is added.
278 */
279config { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_CONFIG); }
280config1 { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_CONFIG1); }
281config2 { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_CONFIG2); }
282name { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_NAME); }
283period { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_SAMPLE_PERIOD); }
284freq { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_SAMPLE_FREQ); }
285branch_type { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_BRANCH_SAMPLE_TYPE); }
286time { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_TIME); }
287call-graph { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_CALLGRAPH); }
288stack-size { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_STACKSIZE); }
289max-stack { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_MAX_STACK); }
290nr { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_MAX_EVENTS); }
291inherit { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_INHERIT); }
292no-inherit { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_NOINHERIT); }
293overwrite { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_OVERWRITE); }
294no-overwrite { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_NOOVERWRITE); }
295percore { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_PERCORE); }
296aux-output { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_AUX_OUTPUT); }
297aux-sample-size { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_AUX_SAMPLE_SIZE); }
298r{num_raw_hex} { return raw(yyscanner); }
299r0x{num_raw_hex} { return raw(yyscanner); }
300, { return ','; }
301"/" { BEGIN(INITIAL); return '/'; }
302{name_minus} { return str(yyscanner, PE_NAME); }
303\[all\] { return PE_ARRAY_ALL; }
304"[" { BEGIN(array); return '['; }
305@{drv_cfg_term} { return drv_str(yyscanner, PE_DRV_CFG_TERM); }
306}
307
308<mem>{
309{modifier_bp} { return str(yyscanner, PE_MODIFIER_BP); }
310: { return ':'; }
311"/" { return '/'; }
312{num_dec} { return value(yyscanner, 10); }
313{num_hex} { return value(yyscanner, 16); }
314 /*
315 * We need to separate 'mem:' scanner part, in order to get specific
316 * modifier bits parsed out. Otherwise we would need to handle PE_NAME
317 * and we'd need to parse it manually. During the escape from <mem>
318 * state we need to put the escaping char back, so we dont miss it.
319 */
320. { unput(*yytext); BEGIN(INITIAL); }
321 /*
322 * We destroy the scanner after reaching EOF,
323 * but anyway just to be sure get back to INIT state.
324 */
325<<EOF>> { BEGIN(INITIAL); }
326}
327
328cpu-cycles|cycles { return sym(yyscanner, PERF_TYPE_HARDWARE, PERF_COUNT_HW_CPU_CYCLES); }
329stalled-cycles-frontend|idle-cycles-frontend { return sym(yyscanner, PERF_TYPE_HARDWARE, PERF_COUNT_HW_STALLED_CYCLES_FRONTEND); }
330stalled-cycles-backend|idle-cycles-backend { return sym(yyscanner, PERF_TYPE_HARDWARE, PERF_COUNT_HW_STALLED_CYCLES_BACKEND); }
331instructions { return sym(yyscanner, PERF_TYPE_HARDWARE, PERF_COUNT_HW_INSTRUCTIONS); }
332cache-references { return sym(yyscanner, PERF_TYPE_HARDWARE, PERF_COUNT_HW_CACHE_REFERENCES); }
333cache-misses { return sym(yyscanner, PERF_TYPE_HARDWARE, PERF_COUNT_HW_CACHE_MISSES); }
334branch-instructions|branches { return sym(yyscanner, PERF_TYPE_HARDWARE, PERF_COUNT_HW_BRANCH_INSTRUCTIONS); }
335branch-misses { return sym(yyscanner, PERF_TYPE_HARDWARE, PERF_COUNT_HW_BRANCH_MISSES); }
336bus-cycles { return sym(yyscanner, PERF_TYPE_HARDWARE, PERF_COUNT_HW_BUS_CYCLES); }
337ref-cycles { return sym(yyscanner, PERF_TYPE_HARDWARE, PERF_COUNT_HW_REF_CPU_CYCLES); }
338cpu-clock { return sym(yyscanner, PERF_TYPE_SOFTWARE, PERF_COUNT_SW_CPU_CLOCK); }
339task-clock { return sym(yyscanner, PERF_TYPE_SOFTWARE, PERF_COUNT_SW_TASK_CLOCK); }
340page-faults|faults { return sym(yyscanner, PERF_TYPE_SOFTWARE, PERF_COUNT_SW_PAGE_FAULTS); }
341minor-faults { return sym(yyscanner, PERF_TYPE_SOFTWARE, PERF_COUNT_SW_PAGE_FAULTS_MIN); }
342major-faults { return sym(yyscanner, PERF_TYPE_SOFTWARE, PERF_COUNT_SW_PAGE_FAULTS_MAJ); }
343context-switches|cs { return sym(yyscanner, PERF_TYPE_SOFTWARE, PERF_COUNT_SW_CONTEXT_SWITCHES); }
344cpu-migrations|migrations { return sym(yyscanner, PERF_TYPE_SOFTWARE, PERF_COUNT_SW_CPU_MIGRATIONS); }
345alignment-faults { return sym(yyscanner, PERF_TYPE_SOFTWARE, PERF_COUNT_SW_ALIGNMENT_FAULTS); }
346emulation-faults { return sym(yyscanner, PERF_TYPE_SOFTWARE, PERF_COUNT_SW_EMULATION_FAULTS); }
347dummy { return sym(yyscanner, PERF_TYPE_SOFTWARE, PERF_COUNT_SW_DUMMY); }
348duration_time { return tool(yyscanner, PERF_TOOL_DURATION_TIME); }
349bpf-output { return sym(yyscanner, PERF_TYPE_SOFTWARE, PERF_COUNT_SW_BPF_OUTPUT); }
350
351 /*
352 * We have to handle the kernel PMU event cycles-ct/cycles-t/mem-loads/mem-stores separately.
353 * Because the prefix cycles is mixed up with cpu-cycles.
354 * loads and stores are mixed up with cache event
355 */
356cycles-ct |
357cycles-t |
358mem-loads |
359mem-stores |
360topdown-[a-z-]+ |
361tx-capacity-[a-z-]+ |
362el-capacity-[a-z-]+ { return str(yyscanner, PE_KERNEL_PMU_EVENT); }
363
364L1-dcache|l1-d|l1d|L1-data |
365L1-icache|l1-i|l1i|L1-instruction |
366LLC|L2 |
367dTLB|d-tlb|Data-TLB |
368iTLB|i-tlb|Instruction-TLB |
369branch|branches|bpu|btb|bpc |
370node { return str(yyscanner, PE_NAME_CACHE_TYPE); }
371
372load|loads|read |
373store|stores|write |
374prefetch|prefetches |
375speculative-read|speculative-load |
376refs|Reference|ops|access |
377misses|miss { return str(yyscanner, PE_NAME_CACHE_OP_RESULT); }
378
379mem: { BEGIN(mem); return PE_PREFIX_MEM; }
380r{num_raw_hex} { return raw(yyscanner); }
381{num_dec} { return value(yyscanner, 10); }
382{num_hex} { return value(yyscanner, 16); }
383
384{modifier_event} { return str(yyscanner, PE_MODIFIER_EVENT); }
385{bpf_object} { if (!isbpf(yyscanner)) { USER_REJECT }; return str(yyscanner, PE_BPF_OBJECT); }
386{bpf_source} { if (!isbpf(yyscanner)) { USER_REJECT }; return str(yyscanner, PE_BPF_SOURCE); }
387{name} { return pmu_str_check(yyscanner, _parse_state); }
388{name_tag} { return str(yyscanner, PE_NAME); }
389"/" { BEGIN(config); return '/'; }
390- { return '-'; }
391, { BEGIN(event); return ','; }
392: { return ':'; }
393"{" { BEGIN(event); return '{'; }
394"}" { return '}'; }
395= { return '='; }
396\n { }
397. { }
398
399%%
400
401int parse_events_wrap(void *scanner __maybe_unused)
402{
403 return 1;
404}