Loading...
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
9%{
10#include <errno.h>
11#include "../perf.h"
12#include "parse-events.h"
13#include "parse-events-bison.h"
14
15char *parse_events_get_text(yyscan_t yyscanner);
16YYSTYPE *parse_events_get_lval(yyscan_t yyscanner);
17
18static 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
31static 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
39static 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
47static 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) \
57do { \
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
68static 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
86static 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
94static 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 \
103do { \
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%x array
115
116group [^,{}/]*[{][^}]*[}][^,{}/]*
117event_pmu [^,{}/]+[/][^/]*[/][^,{}/]*
118event [^,{}/]+
119bpf_object .*\.(o|bpf)
120bpf_source .*\.c
121
122num_dec [0-9]+
123num_hex 0x[a-fA-F0-9]+
124num_raw_hex [a-fA-F0-9]+
125name [a-zA-Z_*?][a-zA-Z0-9_*?.]*
126name_minus [a-zA-Z_*?][a-zA-Z0-9\-_*?.:]*
127/* If you add a modifier you need to update check_modifier() */
128modifier_event [ukhpPGHSDI]+
129modifier_bp [rwx]{1,3}
130
131%%
132
133%{
134 {
135 int start_token;
136
137 start_token = parse_events_get_extra(yyscanner);
138
139 if (start_token == PE_START_TERMS)
140 BEGIN(config);
141 else if (start_token == PE_START_EVENTS)
142 BEGIN(event);
143
144 if (start_token) {
145 parse_events_set_extra(NULL, yyscanner);
146 /*
147 * The flex parser does not init locations variable
148 * via the scan_string interface, so we need do the
149 * init in here.
150 */
151 yycolumn = 0;
152 return start_token;
153 }
154 }
155%}
156
157<event>{
158
159{group} {
160 BEGIN(INITIAL);
161 REWIND(0);
162 }
163
164{event_pmu} |
165{bpf_object} |
166{bpf_source} |
167{event} {
168 BEGIN(INITIAL);
169 REWIND(1);
170 return PE_EVENT_NAME;
171 }
172
173<<EOF>> {
174 BEGIN(INITIAL);
175 REWIND(0);
176 }
177
178}
179
180<array>{
181"]" { BEGIN(config); return ']'; }
182{num_dec} { return value(yyscanner, 10); }
183{num_hex} { return value(yyscanner, 16); }
184, { return ','; }
185"\.\.\." { return PE_ARRAY_RANGE; }
186}
187
188<config>{
189 /*
190 * Please update config_term_names when new static term is added.
191 */
192config { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_CONFIG); }
193config1 { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_CONFIG1); }
194config2 { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_CONFIG2); }
195name { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_NAME); }
196period { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_SAMPLE_PERIOD); }
197freq { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_SAMPLE_FREQ); }
198branch_type { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_BRANCH_SAMPLE_TYPE); }
199time { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_TIME); }
200call-graph { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_CALLGRAPH); }
201stack-size { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_STACKSIZE); }
202inherit { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_INHERIT); }
203no-inherit { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_NOINHERIT); }
204, { return ','; }
205"/" { BEGIN(INITIAL); return '/'; }
206{name_minus} { return str(yyscanner, PE_NAME); }
207\[all\] { return PE_ARRAY_ALL; }
208"[" { BEGIN(array); return '['; }
209}
210
211<mem>{
212{modifier_bp} { return str(yyscanner, PE_MODIFIER_BP); }
213: { return ':'; }
214"/" { return '/'; }
215{num_dec} { return value(yyscanner, 10); }
216{num_hex} { return value(yyscanner, 16); }
217 /*
218 * We need to separate 'mem:' scanner part, in order to get specific
219 * modifier bits parsed out. Otherwise we would need to handle PE_NAME
220 * and we'd need to parse it manually. During the escape from <mem>
221 * state we need to put the escaping char back, so we dont miss it.
222 */
223. { unput(*yytext); BEGIN(INITIAL); }
224 /*
225 * We destroy the scanner after reaching EOF,
226 * but anyway just to be sure get back to INIT state.
227 */
228<<EOF>> { BEGIN(INITIAL); }
229}
230
231cpu-cycles|cycles { return sym(yyscanner, PERF_TYPE_HARDWARE, PERF_COUNT_HW_CPU_CYCLES); }
232stalled-cycles-frontend|idle-cycles-frontend { return sym(yyscanner, PERF_TYPE_HARDWARE, PERF_COUNT_HW_STALLED_CYCLES_FRONTEND); }
233stalled-cycles-backend|idle-cycles-backend { return sym(yyscanner, PERF_TYPE_HARDWARE, PERF_COUNT_HW_STALLED_CYCLES_BACKEND); }
234instructions { return sym(yyscanner, PERF_TYPE_HARDWARE, PERF_COUNT_HW_INSTRUCTIONS); }
235cache-references { return sym(yyscanner, PERF_TYPE_HARDWARE, PERF_COUNT_HW_CACHE_REFERENCES); }
236cache-misses { return sym(yyscanner, PERF_TYPE_HARDWARE, PERF_COUNT_HW_CACHE_MISSES); }
237branch-instructions|branches { return sym(yyscanner, PERF_TYPE_HARDWARE, PERF_COUNT_HW_BRANCH_INSTRUCTIONS); }
238branch-misses { return sym(yyscanner, PERF_TYPE_HARDWARE, PERF_COUNT_HW_BRANCH_MISSES); }
239bus-cycles { return sym(yyscanner, PERF_TYPE_HARDWARE, PERF_COUNT_HW_BUS_CYCLES); }
240ref-cycles { return sym(yyscanner, PERF_TYPE_HARDWARE, PERF_COUNT_HW_REF_CPU_CYCLES); }
241cpu-clock { return sym(yyscanner, PERF_TYPE_SOFTWARE, PERF_COUNT_SW_CPU_CLOCK); }
242task-clock { return sym(yyscanner, PERF_TYPE_SOFTWARE, PERF_COUNT_SW_TASK_CLOCK); }
243page-faults|faults { return sym(yyscanner, PERF_TYPE_SOFTWARE, PERF_COUNT_SW_PAGE_FAULTS); }
244minor-faults { return sym(yyscanner, PERF_TYPE_SOFTWARE, PERF_COUNT_SW_PAGE_FAULTS_MIN); }
245major-faults { return sym(yyscanner, PERF_TYPE_SOFTWARE, PERF_COUNT_SW_PAGE_FAULTS_MAJ); }
246context-switches|cs { return sym(yyscanner, PERF_TYPE_SOFTWARE, PERF_COUNT_SW_CONTEXT_SWITCHES); }
247cpu-migrations|migrations { return sym(yyscanner, PERF_TYPE_SOFTWARE, PERF_COUNT_SW_CPU_MIGRATIONS); }
248alignment-faults { return sym(yyscanner, PERF_TYPE_SOFTWARE, PERF_COUNT_SW_ALIGNMENT_FAULTS); }
249emulation-faults { return sym(yyscanner, PERF_TYPE_SOFTWARE, PERF_COUNT_SW_EMULATION_FAULTS); }
250dummy { return sym(yyscanner, PERF_TYPE_SOFTWARE, PERF_COUNT_SW_DUMMY); }
251bpf-output { return sym(yyscanner, PERF_TYPE_SOFTWARE, PERF_COUNT_SW_BPF_OUTPUT); }
252
253 /*
254 * We have to handle the kernel PMU event cycles-ct/cycles-t/mem-loads/mem-stores separately.
255 * Because the prefix cycles is mixed up with cpu-cycles.
256 * loads and stores are mixed up with cache event
257 */
258cycles-ct { return str(yyscanner, PE_KERNEL_PMU_EVENT); }
259cycles-t { return str(yyscanner, PE_KERNEL_PMU_EVENT); }
260mem-loads { return str(yyscanner, PE_KERNEL_PMU_EVENT); }
261mem-stores { return str(yyscanner, PE_KERNEL_PMU_EVENT); }
262
263L1-dcache|l1-d|l1d|L1-data |
264L1-icache|l1-i|l1i|L1-instruction |
265LLC|L2 |
266dTLB|d-tlb|Data-TLB |
267iTLB|i-tlb|Instruction-TLB |
268branch|branches|bpu|btb|bpc |
269node { return str(yyscanner, PE_NAME_CACHE_TYPE); }
270
271load|loads|read |
272store|stores|write |
273prefetch|prefetches |
274speculative-read|speculative-load |
275refs|Reference|ops|access |
276misses|miss { return str(yyscanner, PE_NAME_CACHE_OP_RESULT); }
277
278mem: { BEGIN(mem); return PE_PREFIX_MEM; }
279r{num_raw_hex} { return raw(yyscanner); }
280{num_dec} { return value(yyscanner, 10); }
281{num_hex} { return value(yyscanner, 16); }
282
283{modifier_event} { return str(yyscanner, PE_MODIFIER_EVENT); }
284{bpf_object} { return str(yyscanner, PE_BPF_OBJECT); }
285{bpf_source} { return str(yyscanner, PE_BPF_SOURCE); }
286{name} { return pmu_str_check(yyscanner); }
287"/" { BEGIN(config); return '/'; }
288- { return '-'; }
289, { BEGIN(event); return ','; }
290: { return ':'; }
291"{" { BEGIN(event); return '{'; }
292"}" { return '}'; }
293= { return '='; }
294\n { }
295. { }
296
297%%
298
299int parse_events_wrap(void *scanner __maybe_unused)
300{
301 return 1;
302}