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TOMOYO Linux Cross Reference
Linux/tools/perf/util/parse-events.l

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Diff markup

Differences between /tools/perf/util/parse-events.l (Version linux-6.12-rc7) and /tools/perf/util/parse-events.l (Version linux-6.7.12)


  1                                                     1 
  2 %option reentrant                                   2 %option reentrant
  3 %option bison-bridge                                3 %option bison-bridge
  4 %option prefix="parse_events_"                      4 %option prefix="parse_events_"
  5 %option stack                                       5 %option stack
  6 %option bison-locations                             6 %option bison-locations
  7 %option yylineno                                    7 %option yylineno
  8 %option reject                                      8 %option reject
  9                                                     9 
 10 %{                                                 10 %{
 11 #include <errno.h>                                 11 #include <errno.h>
 12 #include <sys/types.h>                             12 #include <sys/types.h>
 13 #include <sys/stat.h>                              13 #include <sys/stat.h>
 14 #include <unistd.h>                                14 #include <unistd.h>
 15 #include "parse-events.h"                          15 #include "parse-events.h"
 16 #include "parse-events-bison.h"                    16 #include "parse-events-bison.h"
 17 #include "evsel.h"                                 17 #include "evsel.h"
 18                                                    18 
 19 char *parse_events_get_text(yyscan_t yyscanner     19 char *parse_events_get_text(yyscan_t yyscanner);
 20 YYSTYPE *parse_events_get_lval(yyscan_t yyscan     20 YYSTYPE *parse_events_get_lval(yyscan_t yyscanner);
 21 int parse_events_get_column(yyscan_t yyscanner << 
 22 int parse_events_get_leng(yyscan_t yyscanner); << 
 23                                                    21 
 24 static int get_column(yyscan_t scanner)        !!  22 static int __value(YYSTYPE *yylval, char *str, int base, int token)
 25 {                                                  23 {
 26         return parse_events_get_column(scanner << 
 27 }                                              << 
 28                                                << 
 29 static int value(struct parse_events_state *pa << 
 30 {                                              << 
 31         YYSTYPE *yylval = parse_events_get_lva << 
 32         char *text = parse_events_get_text(sca << 
 33         u64 num;                                   24         u64 num;
 34                                                    25 
 35         errno = 0;                                 26         errno = 0;
 36         num = strtoull(text, NULL, base);      !!  27         num = strtoull(str, NULL, base);
 37         if (errno) {                           !!  28         if (errno)
 38                 struct parse_events_error *err << 
 39                 char *help = NULL;             << 
 40                                                << 
 41                 if (asprintf(&help, "Bad base  << 
 42                         parse_events_error__ha << 
 43                                                << 
 44                 return PE_ERROR;                   29                 return PE_ERROR;
 45         }                                      << 
 46                                                    30 
 47         yylval->num = num;                         31         yylval->num = num;
 48         return PE_VALUE;                       !!  32         return token;
                                                   >>  33 }
                                                   >>  34 
                                                   >>  35 static int value(yyscan_t scanner, int base)
                                                   >>  36 {
                                                   >>  37         YYSTYPE *yylval = parse_events_get_lval(scanner);
                                                   >>  38         char *text = parse_events_get_text(scanner);
                                                   >>  39 
                                                   >>  40         return __value(yylval, text, base, PE_VALUE);
 49 }                                                  41 }
 50                                                    42 
 51 static int str(yyscan_t scanner, int token)        43 static int str(yyscan_t scanner, int token)
 52 {                                                  44 {
 53         YYSTYPE *yylval = parse_events_get_lva     45         YYSTYPE *yylval = parse_events_get_lval(scanner);
 54         char *text = parse_events_get_text(sca     46         char *text = parse_events_get_text(scanner);
 55                                                    47 
 56         if (text[0] != '\'') {                     48         if (text[0] != '\'') {
 57                 yylval->str = strdup(text);        49                 yylval->str = strdup(text);
 58         } else {                                   50         } else {
 59                 /*                                 51                 /*
 60                  * If a text tag specified on      52                  * If a text tag specified on the command line
 61                  * contains opening single qui     53                  * contains opening single quite ' then it is
 62                  * expected that the tag ends      54                  * expected that the tag ends with single quote
 63                  * as well, like this:             55                  * as well, like this:
 64                  *     name=\'CPU_CLK_UNHALTED     56                  *     name=\'CPU_CLK_UNHALTED.THREAD:cmask=1\'
 65                  * quotes need to be escaped t     57                  * quotes need to be escaped to bypass shell
 66                  * processing.                     58                  * processing.
 67                  */                                59                  */
 68                 yylval->str = strndup(&text[1]     60                 yylval->str = strndup(&text[1], strlen(text) - 2);
 69         }                                          61         }
 70                                                    62 
 71         return token;                              63         return token;
 72 }                                                  64 }
 73                                                    65 
 74 static int lc_str(yyscan_t scanner, const stru     66 static int lc_str(yyscan_t scanner, const struct parse_events_state *state)
 75 {                                                  67 {
 76         return str(scanner, state->match_legac     68         return str(scanner, state->match_legacy_cache_terms ? PE_LEGACY_CACHE : PE_NAME);
 77 }                                                  69 }
 78                                                    70 
 79 /*                                                 71 /*
 80  * This function is called when the parser get     72  * This function is called when the parser gets two kind of input:
 81  *                                                 73  *
 82  *      @cfg1 or @cfg2=config                      74  *      @cfg1 or @cfg2=config
 83  *                                                 75  *
 84  * The leading '@' is stripped off before 'cfg     76  * The leading '@' is stripped off before 'cfg1' and 'cfg2=config' are given to
 85  * bison.  In the latter case it is necessary      77  * bison.  In the latter case it is necessary to keep the string intact so that
 86  * the PMU kernel driver can determine what co     78  * the PMU kernel driver can determine what configurable is associated to
 87  * 'config'.                                       79  * 'config'.
 88  */                                                80  */
 89 static int drv_str(yyscan_t scanner, int token     81 static int drv_str(yyscan_t scanner, int token)
 90 {                                                  82 {
 91         YYSTYPE *yylval = parse_events_get_lva     83         YYSTYPE *yylval = parse_events_get_lval(scanner);
 92         char *text = parse_events_get_text(sca     84         char *text = parse_events_get_text(scanner);
 93                                                    85 
 94         /* Strip off the '@' */                    86         /* Strip off the '@' */
 95         yylval->str = strdup(text + 1);            87         yylval->str = strdup(text + 1);
 96         return token;                              88         return token;
 97 }                                                  89 }
 98                                                    90 
 99 /*                                             << 
100  * Use yyless to return all the characaters to << 
101  * location debugging. If __alloc is non-zero  << 
102  * returned token's value.                     << 
103  */                                            << 
104 #define REWIND(__alloc)                            91 #define REWIND(__alloc)                         \
105 do {                                               92 do {                                                            \
106         YYSTYPE *__yylval = parse_events_get_l     93         YYSTYPE *__yylval = parse_events_get_lval(yyscanner);   \
107         char *text = parse_events_get_text(yys     94         char *text = parse_events_get_text(yyscanner);          \
108                                                    95                                                                 \
109         if (__alloc)                               96         if (__alloc)                                            \
110                 __yylval->str = strdup(text);      97                 __yylval->str = strdup(text);                   \
111                                                    98                                                                 \
112         yycolumn -= strlen(text);                  99         yycolumn -= strlen(text);                               \
113         yyless(0);                                100         yyless(0);                                              \
114 } while (0)                                       101 } while (0)
115                                                   102 
116 static int sym(yyscan_t scanner, int type, int    103 static int sym(yyscan_t scanner, int type, int config)
117 {                                                 104 {
118         YYSTYPE *yylval = parse_events_get_lva    105         YYSTYPE *yylval = parse_events_get_lval(scanner);
119                                                   106 
120         yylval->num = (type << 16) + config;      107         yylval->num = (type << 16) + config;
121         return type == PERF_TYPE_HARDWARE ? PE    108         return type == PERF_TYPE_HARDWARE ? PE_VALUE_SYM_HW : PE_VALUE_SYM_SW;
122 }                                                 109 }
123                                                   110 
124 static int tool(yyscan_t scanner, enum perf_to    111 static int tool(yyscan_t scanner, enum perf_tool_event event)
125 {                                                 112 {
126         YYSTYPE *yylval = parse_events_get_lva    113         YYSTYPE *yylval = parse_events_get_lval(scanner);
127                                                   114 
128         yylval->num = event;                      115         yylval->num = event;
129         return PE_VALUE_SYM_TOOL;                 116         return PE_VALUE_SYM_TOOL;
130 }                                                 117 }
131                                                   118 
132 static int term(yyscan_t scanner, enum parse_e    119 static int term(yyscan_t scanner, enum parse_events__term_type type)
133 {                                                 120 {
134         YYSTYPE *yylval = parse_events_get_lva    121         YYSTYPE *yylval = parse_events_get_lval(scanner);
135                                                   122 
136         yylval->term_type = type;                 123         yylval->term_type = type;
137         return PE_TERM;                           124         return PE_TERM;
138 }                                                 125 }
139                                                   126 
140 static int hw_term(yyscan_t scanner, int confi    127 static int hw_term(yyscan_t scanner, int config)
141 {                                                 128 {
142         YYSTYPE *yylval = parse_events_get_lva    129         YYSTYPE *yylval = parse_events_get_lval(scanner);
143         char *text = parse_events_get_text(sca    130         char *text = parse_events_get_text(scanner);
144                                                   131 
145         yylval->hardware_term.str = strdup(tex    132         yylval->hardware_term.str = strdup(text);
146         yylval->hardware_term.num = PERF_TYPE_    133         yylval->hardware_term.num = PERF_TYPE_HARDWARE + config;
147         return PE_TERM_HW;                        134         return PE_TERM_HW;
148 }                                                 135 }
149                                                   136 
150 static void modifiers_error(struct parse_event << 
151                             int pos, char mod_ << 
152 {                                              << 
153         struct parse_events_error *error = par << 
154         char *help = NULL;                     << 
155                                                << 
156         if (asprintf(&help, "Duplicate modifie << 
157                 parse_events_error__handle(err << 
158 }                                              << 
159                                                << 
160 static int modifiers(struct parse_events_state << 
161 {                                              << 
162         YYSTYPE *yylval = parse_events_get_lva << 
163         char *text = parse_events_get_text(sca << 
164         struct parse_events_modifier mod = { . << 
165                                                << 
166         for (size_t i = 0, n = strlen(text); i << 
167 #define CASE(c, field)                         << 
168                 case c:                        << 
169                         if (mod.field) {       << 
170                                 modifiers_erro << 
171                                 return PE_ERRO << 
172                         }                      << 
173                         mod.field = true;      << 
174                         break                  << 
175                                                << 
176                 switch (text[i]) {             << 
177                 CASE('u', user);               << 
178                 CASE('k', kernel);             << 
179                 CASE('h', hypervisor);         << 
180                 CASE('I', non_idle);           << 
181                 CASE('G', guest);              << 
182                 CASE('H', host);               << 
183                 case 'p':                      << 
184                         mod.precise++;         << 
185                         /*                     << 
186                          * precise ip:         << 
187                          *                     << 
188                          *  0 - SAMPLE_IP can  << 
189                          *  1 - SAMPLE_IP must << 
190                          *  2 - SAMPLE_IP requ << 
191                          *  3 - SAMPLE_IP must << 
192                          *                     << 
193                          *  See also PERF_RECO << 
194                          */                    << 
195                         if (mod.precise > 3) { << 
196                                 struct parse_e << 
197                                 char *help = s << 
198                                                << 
199                                 if (help) {    << 
200                                         parse_ << 
201                                                << 
202                                 }              << 
203                                 return PE_ERRO << 
204                         }                      << 
205                         break;                 << 
206                 CASE('P', precise_max);        << 
207                 CASE('S', sample_read);        << 
208                 CASE('D', pinned);             << 
209                 CASE('W', weak);               << 
210                 CASE('e', exclusive);          << 
211                 CASE('b', bpf);                << 
212                 CASE('R', retire_lat);         << 
213                 default:                       << 
214                         return PE_ERROR;       << 
215                 }                              << 
216 #undef CASE                                    << 
217         }                                      << 
218         yylval->mod = mod;                     << 
219         return PE_MODIFIER_EVENT;              << 
220 }                                              << 
221                                                << 
222 #define YY_USER_ACTION                            137 #define YY_USER_ACTION                                  \
223 do {                                              138 do {                                                    \
224         yylloc->last_column  = yylloc->first_c    139         yylloc->last_column  = yylloc->first_column;    \
225         yylloc->first_column = yycolumn;          140         yylloc->first_column = yycolumn;                \
226         yycolumn += yyleng;                       141         yycolumn += yyleng;                             \
227 } while (0);                                      142 } while (0);
228                                                   143 
229 #define USER_REJECT             \                 144 #define USER_REJECT             \
230         yycolumn -= yyleng;     \                 145         yycolumn -= yyleng;     \
231         REJECT                                    146         REJECT
232                                                   147 
233 %}                                                148 %}
234                                                   149 
235 %x mem                                            150 %x mem
236 %s config                                         151 %s config
237 %x event                                          152 %x event
238                                                   153 
239 group           [^,{}/]*[{][^}]*[}][^,{}/]*       154 group           [^,{}/]*[{][^}]*[}][^,{}/]*
240 event_pmu       [^,{}/]+[/][^/]*[/][^,{}/]*       155 event_pmu       [^,{}/]+[/][^/]*[/][^,{}/]*
241 event           [^,{}/]+                          156 event           [^,{}/]+
242                                                   157 
243 num_dec         [0-9]+                            158 num_dec         [0-9]+
244 num_hex         0x[a-fA-F0-9]{1,16}               159 num_hex         0x[a-fA-F0-9]{1,16}
245 num_raw_hex     [a-fA-F0-9]{1,16}                 160 num_raw_hex     [a-fA-F0-9]{1,16}
246 name            [a-zA-Z0-9_*?\[\]][a-zA-Z0-9_* !! 161 name            [a-zA-Z_*?\[\]][a-zA-Z0-9_*?.\[\]!\-]*
247 name_tag        [\'][a-zA-Z0-9_*?\[\]][a-zA-Z0 !! 162 name_tag        [\'][a-zA-Z_*?\[\]][a-zA-Z0-9_*?\-,\.\[\]:=]*[\']
248 name_minus      [a-zA-Z_*?][a-zA-Z0-9\-_*?.:]*    163 name_minus      [a-zA-Z_*?][a-zA-Z0-9\-_*?.:]*
249 drv_cfg_term    [a-zA-Z0-9_\.]+(=[a-zA-Z0-9_*?    164 drv_cfg_term    [a-zA-Z0-9_\.]+(=[a-zA-Z0-9_*?\.:]+)?
250 /*                                                165 /*
251  * If you add a modifier you need to update ch    166  * If you add a modifier you need to update check_modifier().
252  * Also, the letters in modifier_event must no    167  * Also, the letters in modifier_event must not be in modifier_bp.
253  */                                               168  */
254 modifier_event  [ukhpPGHSDIWebR]{1,16}         !! 169 modifier_event  [ukhpPGHSDIWeb]+
255 modifier_bp     [rwx]{1,3}                        170 modifier_bp     [rwx]{1,3}
256 lc_type         (L1-dcache|l1-d|l1d|L1-data|L1    171 lc_type         (L1-dcache|l1-d|l1d|L1-data|L1-icache|l1-i|l1i|L1-instruction|LLC|L2|dTLB|d-tlb|Data-TLB|iTLB|i-tlb|Instruction-TLB|branch|branches|bpu|btb|bpc|node)
257 lc_op_result    (load|loads|read|store|stores|    172 lc_op_result    (load|loads|read|store|stores|write|prefetch|prefetches|speculative-read|speculative-load|refs|Reference|ops|access|misses|miss)
258 digit           [0-9]                             173 digit           [0-9]
259 non_digit       [^0-9]                            174 non_digit       [^0-9]
260                                                   175 
261 %%                                                176 %%
262                                                   177 
263 %{                                                178 %{
264         struct parse_events_state *_parse_stat    179         struct parse_events_state *_parse_state = parse_events_get_extra(yyscanner);
265         {                                         180         {
266                 int start_token = _parse_state    181                 int start_token = _parse_state->stoken;
267                                                   182 
268                 if (start_token == PE_START_TE    183                 if (start_token == PE_START_TERMS)
269                         BEGIN(config);            184                         BEGIN(config);
270                 else if (start_token == PE_STA    185                 else if (start_token == PE_START_EVENTS)
271                         BEGIN(event);             186                         BEGIN(event);
272                                                   187 
273                 if (start_token) {                188                 if (start_token) {
274                         _parse_state->stoken =    189                         _parse_state->stoken = 0;
275                         /*                        190                         /*
276                          * The flex parser doe    191                          * The flex parser does not init locations variable
277                          * via the scan_string    192                          * via the scan_string interface, so we need do the
278                          * init in here.          193                          * init in here.
279                          */                       194                          */
280                         yycolumn = 0;             195                         yycolumn = 0;
281                         return start_token;       196                         return start_token;
282                 }                                 197                 }
283          }                                        198          }
284 %}                                                199 %}
285                                                   200 
286 <event>{                                          201 <event>{
287                                                   202 
288 {group}         {                                 203 {group}         {
289                         BEGIN(INITIAL);           204                         BEGIN(INITIAL);
290                         REWIND(0);                205                         REWIND(0);
291                 }                                 206                 }
292                                                   207 
293 {event_pmu}     |                                 208 {event_pmu}     |
294 {event}         {                                 209 {event}         {
295                         BEGIN(INITIAL);           210                         BEGIN(INITIAL);
296                         REWIND(1);                211                         REWIND(1);
297                         return PE_EVENT_NAME;     212                         return PE_EVENT_NAME;
298                 }                                 213                 }
299                                                   214 
300 <<EOF>>         {                                 215 <<EOF>>         {
301                         BEGIN(INITIAL);           216                         BEGIN(INITIAL);
302                         REWIND(0);                217                         REWIND(0);
303                 }                                 218                 }
304 ,               {                                 219 ,               {
305                         return ',';               220                         return ',';
306                 }                                 221                 }
307 }                                                 222 }
308                                                   223 
309 <config>{                                         224 <config>{
310         /*                                        225         /*
311          * Please update config_term_names whe    226          * Please update config_term_names when new static term is added.
312          */                                       227          */
313 config                  { return term(yyscanne    228 config                  { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_CONFIG); }
314 config1                 { return term(yyscanne    229 config1                 { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_CONFIG1); }
315 config2                 { return term(yyscanne    230 config2                 { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_CONFIG2); }
316 config3                 { return term(yyscanne    231 config3                 { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_CONFIG3); }
317 name                    { return term(yyscanne    232 name                    { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_NAME); }
318 period                  { return term(yyscanne    233 period                  { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_SAMPLE_PERIOD); }
319 freq                    { return term(yyscanne    234 freq                    { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_SAMPLE_FREQ); }
320 branch_type             { return term(yyscanne    235 branch_type             { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_BRANCH_SAMPLE_TYPE); }
321 time                    { return term(yyscanne    236 time                    { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_TIME); }
322 call-graph              { return term(yyscanne    237 call-graph              { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_CALLGRAPH); }
323 stack-size              { return term(yyscanne    238 stack-size              { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_STACKSIZE); }
324 max-stack               { return term(yyscanne    239 max-stack               { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_MAX_STACK); }
325 nr                      { return term(yyscanne    240 nr                      { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_MAX_EVENTS); }
326 inherit                 { return term(yyscanne    241 inherit                 { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_INHERIT); }
327 no-inherit              { return term(yyscanne    242 no-inherit              { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_NOINHERIT); }
328 overwrite               { return term(yyscanne    243 overwrite               { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_OVERWRITE); }
329 no-overwrite            { return term(yyscanne    244 no-overwrite            { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_NOOVERWRITE); }
330 percore                 { return term(yyscanne    245 percore                 { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_PERCORE); }
331 aux-output              { return term(yyscanne    246 aux-output              { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_AUX_OUTPUT); }
332 aux-sample-size         { return term(yyscanne    247 aux-sample-size         { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_AUX_SAMPLE_SIZE); }
333 metric-id               { return term(yyscanne    248 metric-id               { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_METRIC_ID); }
334 cpu-cycles|cycles                                 249 cpu-cycles|cycles                               { return hw_term(yyscanner, PERF_COUNT_HW_CPU_CYCLES); }
335 stalled-cycles-frontend|idle-cycles-frontend      250 stalled-cycles-frontend|idle-cycles-frontend    { return hw_term(yyscanner, PERF_COUNT_HW_STALLED_CYCLES_FRONTEND); }
336 stalled-cycles-backend|idle-cycles-backend        251 stalled-cycles-backend|idle-cycles-backend      { return hw_term(yyscanner, PERF_COUNT_HW_STALLED_CYCLES_BACKEND); }
337 instructions                                      252 instructions                                    { return hw_term(yyscanner, PERF_COUNT_HW_INSTRUCTIONS); }
338 cache-references                                  253 cache-references                                { return hw_term(yyscanner, PERF_COUNT_HW_CACHE_REFERENCES); }
339 cache-misses                                      254 cache-misses                                    { return hw_term(yyscanner, PERF_COUNT_HW_CACHE_MISSES); }
340 branch-instructions|branches                      255 branch-instructions|branches                    { return hw_term(yyscanner, PERF_COUNT_HW_BRANCH_INSTRUCTIONS); }
341 branch-misses                                     256 branch-misses                                   { return hw_term(yyscanner, PERF_COUNT_HW_BRANCH_MISSES); }
342 bus-cycles                                        257 bus-cycles                                      { return hw_term(yyscanner, PERF_COUNT_HW_BUS_CYCLES); }
343 ref-cycles                                        258 ref-cycles                                      { return hw_term(yyscanner, PERF_COUNT_HW_REF_CPU_CYCLES); }
344 r{num_raw_hex}          { return str(yyscanner    259 r{num_raw_hex}          { return str(yyscanner, PE_RAW); }
345 r0x{num_raw_hex}        { return str(yyscanner    260 r0x{num_raw_hex}        { return str(yyscanner, PE_RAW); }
346 ,                       { return ','; }           261 ,                       { return ','; }
347 "/"                     { BEGIN(INITIAL); retu    262 "/"                     { BEGIN(INITIAL); return '/'; }
348 {lc_type}                       { return lc_st    263 {lc_type}                       { return lc_str(yyscanner, _parse_state); }
349 {lc_type}-{lc_op_result}        { return lc_st    264 {lc_type}-{lc_op_result}        { return lc_str(yyscanner, _parse_state); }
350 {lc_type}-{lc_op_result}-{lc_op_result} { retu    265 {lc_type}-{lc_op_result}-{lc_op_result} { return lc_str(yyscanner, _parse_state); }
351 {name_minus}            { return str(yyscanner    266 {name_minus}            { return str(yyscanner, PE_NAME); }
352 @{drv_cfg_term}         { return drv_str(yysca    267 @{drv_cfg_term}         { return drv_str(yyscanner, PE_DRV_CFG_TERM); }
353 }                                                 268 }
354                                                   269 
355 <mem>{                                            270 <mem>{
356 {modifier_bp}           { return str(yyscanner    271 {modifier_bp}           { return str(yyscanner, PE_MODIFIER_BP); }
357         /*                                        272         /*
358          * The colon before memory access modi    273          * The colon before memory access modifiers can get mixed up with the
359          * colon before event modifiers. Fortu    274          * colon before event modifiers. Fortunately none of the option letters
360          * are the same, so trailing context c    275          * are the same, so trailing context can be used disambiguate the two
361          * cases.                                 276          * cases.
362          */                                       277          */
363 ":"/{modifier_bp}       { return PE_BP_COLON;     278 ":"/{modifier_bp}       { return PE_BP_COLON; }
364         /*                                        279         /*
365          * The slash before memory length can     280          * The slash before memory length can get mixed up with the slash before
366          * config terms. Fortunately config te    281          * config terms. Fortunately config terms do not start with a numeric
367          * digit, so trailing context can be u    282          * digit, so trailing context can be used disambiguate the two cases.
368          */                                       283          */
369 "/"/{digit}             { return PE_BP_SLASH;     284 "/"/{digit}             { return PE_BP_SLASH; }
370 "/"/{non_digit}         { BEGIN(config); retur    285 "/"/{non_digit}         { BEGIN(config); return '/'; }
371 {num_dec}               { return value(_parse_ !! 286 {num_dec}               { return value(yyscanner, 10); }
372 {num_hex}               { return value(_parse_ !! 287 {num_hex}               { return value(yyscanner, 16); }
373         /*                                        288         /*
374          * We need to separate 'mem:' scanner     289          * We need to separate 'mem:' scanner part, in order to get specific
375          * modifier bits parsed out. Otherwise    290          * modifier bits parsed out. Otherwise we would need to handle PE_NAME
376          * and we'd need to parse it manually.    291          * and we'd need to parse it manually. During the escape from <mem>
377          * state we need to put the escaping c    292          * state we need to put the escaping char back, so we dont miss it.
378          */                                       293          */
379 .                       { unput(*yytext); BEGI    294 .                       { unput(*yytext); BEGIN(INITIAL); }
380         /*                                        295         /*
381          * We destroy the scanner after reachi    296          * We destroy the scanner after reaching EOF,
382          * but anyway just to be sure get back    297          * but anyway just to be sure get back to INIT state.
383          */                                       298          */
384 <<EOF>>                 { BEGIN(INITIAL); }       299 <<EOF>>                 { BEGIN(INITIAL); }
385 }                                                 300 }
386                                                   301 
387 cpu-cycles|cycles                                 302 cpu-cycles|cycles                               { return sym(yyscanner, PERF_TYPE_HARDWARE, PERF_COUNT_HW_CPU_CYCLES); }
388 stalled-cycles-frontend|idle-cycles-frontend      303 stalled-cycles-frontend|idle-cycles-frontend    { return sym(yyscanner, PERF_TYPE_HARDWARE, PERF_COUNT_HW_STALLED_CYCLES_FRONTEND); }
389 stalled-cycles-backend|idle-cycles-backend        304 stalled-cycles-backend|idle-cycles-backend      { return sym(yyscanner, PERF_TYPE_HARDWARE, PERF_COUNT_HW_STALLED_CYCLES_BACKEND); }
390 instructions                                      305 instructions                                    { return sym(yyscanner, PERF_TYPE_HARDWARE, PERF_COUNT_HW_INSTRUCTIONS); }
391 cache-references                                  306 cache-references                                { return sym(yyscanner, PERF_TYPE_HARDWARE, PERF_COUNT_HW_CACHE_REFERENCES); }
392 cache-misses                                      307 cache-misses                                    { return sym(yyscanner, PERF_TYPE_HARDWARE, PERF_COUNT_HW_CACHE_MISSES); }
393 branch-instructions|branches                      308 branch-instructions|branches                    { return sym(yyscanner, PERF_TYPE_HARDWARE, PERF_COUNT_HW_BRANCH_INSTRUCTIONS); }
394 branch-misses                                     309 branch-misses                                   { return sym(yyscanner, PERF_TYPE_HARDWARE, PERF_COUNT_HW_BRANCH_MISSES); }
395 bus-cycles                                        310 bus-cycles                                      { return sym(yyscanner, PERF_TYPE_HARDWARE, PERF_COUNT_HW_BUS_CYCLES); }
396 ref-cycles                                        311 ref-cycles                                      { return sym(yyscanner, PERF_TYPE_HARDWARE, PERF_COUNT_HW_REF_CPU_CYCLES); }
397 cpu-clock                                         312 cpu-clock                                       { return sym(yyscanner, PERF_TYPE_SOFTWARE, PERF_COUNT_SW_CPU_CLOCK); }
398 task-clock                                        313 task-clock                                      { return sym(yyscanner, PERF_TYPE_SOFTWARE, PERF_COUNT_SW_TASK_CLOCK); }
399 page-faults|faults                                314 page-faults|faults                              { return sym(yyscanner, PERF_TYPE_SOFTWARE, PERF_COUNT_SW_PAGE_FAULTS); }
400 minor-faults                                      315 minor-faults                                    { return sym(yyscanner, PERF_TYPE_SOFTWARE, PERF_COUNT_SW_PAGE_FAULTS_MIN); }
401 major-faults                                      316 major-faults                                    { return sym(yyscanner, PERF_TYPE_SOFTWARE, PERF_COUNT_SW_PAGE_FAULTS_MAJ); }
402 context-switches|cs                               317 context-switches|cs                             { return sym(yyscanner, PERF_TYPE_SOFTWARE, PERF_COUNT_SW_CONTEXT_SWITCHES); }
403 cpu-migrations|migrations                         318 cpu-migrations|migrations                       { return sym(yyscanner, PERF_TYPE_SOFTWARE, PERF_COUNT_SW_CPU_MIGRATIONS); }
404 alignment-faults                                  319 alignment-faults                                { return sym(yyscanner, PERF_TYPE_SOFTWARE, PERF_COUNT_SW_ALIGNMENT_FAULTS); }
405 emulation-faults                                  320 emulation-faults                                { return sym(yyscanner, PERF_TYPE_SOFTWARE, PERF_COUNT_SW_EMULATION_FAULTS); }
406 dummy                                             321 dummy                                           { return sym(yyscanner, PERF_TYPE_SOFTWARE, PERF_COUNT_SW_DUMMY); }
407 duration_time                                     322 duration_time                                   { return tool(yyscanner, PERF_TOOL_DURATION_TIME); }
408 user_time                                         323 user_time                                               { return tool(yyscanner, PERF_TOOL_USER_TIME); }
409 system_time                                       324 system_time                                             { return tool(yyscanner, PERF_TOOL_SYSTEM_TIME); }
410 bpf-output                                        325 bpf-output                                      { return sym(yyscanner, PERF_TYPE_SOFTWARE, PERF_COUNT_SW_BPF_OUTPUT); }
411 cgroup-switches                                   326 cgroup-switches                                 { return sym(yyscanner, PERF_TYPE_SOFTWARE, PERF_COUNT_SW_CGROUP_SWITCHES); }
412                                                   327 
413 {lc_type}                       { return str(y    328 {lc_type}                       { return str(yyscanner, PE_LEGACY_CACHE); }
414 {lc_type}-{lc_op_result}        { return str(y    329 {lc_type}-{lc_op_result}        { return str(yyscanner, PE_LEGACY_CACHE); }
415 {lc_type}-{lc_op_result}-{lc_op_result} { retu    330 {lc_type}-{lc_op_result}-{lc_op_result} { return str(yyscanner, PE_LEGACY_CACHE); }
416 mem:                    { BEGIN(mem); return P    331 mem:                    { BEGIN(mem); return PE_PREFIX_MEM; }
417 r{num_raw_hex}          { return str(yyscanner    332 r{num_raw_hex}          { return str(yyscanner, PE_RAW); }
418 {num_dec}               { return value(_parse_ !! 333 {num_dec}               { return value(yyscanner, 10); }
419 {num_hex}               { return value(_parse_ !! 334 {num_hex}               { return value(yyscanner, 16); }
420                                                   335 
421 {modifier_event}        { return modifiers(_pa !! 336 {modifier_event}        { return str(yyscanner, PE_MODIFIER_EVENT); }
422 {name}                  { return str(yyscanner    337 {name}                  { return str(yyscanner, PE_NAME); }
423 {name_tag}              { return str(yyscanner    338 {name_tag}              { return str(yyscanner, PE_NAME); }
424 "/"                     { BEGIN(config); retur    339 "/"                     { BEGIN(config); return '/'; }
425 ,                       { BEGIN(event); return    340 ,                       { BEGIN(event); return ','; }
426 :                       { return ':'; }           341 :                       { return ':'; }
427 "{"                     { BEGIN(event); return    342 "{"                     { BEGIN(event); return '{'; }
428 "}"                     { return '}'; }           343 "}"                     { return '}'; }
429 =                       { return '='; }           344 =                       { return '='; }
430 \n                      { }                       345 \n                      { }
431 .                       { }                       346 .                       { }
432                                                   347 
433 %%                                                348 %%
434                                                   349 
435 int parse_events_wrap(void *scanner __maybe_un    350 int parse_events_wrap(void *scanner __maybe_unused)
436 {                                                 351 {
437         return 1;                                 352         return 1;
438 }                                                 353 }
                                                      

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