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