1 /* SPDX-License-Identifier: GPL-2.0 */ 2 #ifndef __PERF_PARSE_EVENTS_H 3 #define __PERF_PARSE_EVENTS_H 4 /* 5 * Parse symbolic events/counts passed in as options: 6 */ 7 8 #include <linux/list.h> 9 #include <stdbool.h> 10 #include <linux/types.h> 11 #include <linux/perf_event.h> 12 #include <stdio.h> 13 #include <string.h> 14 15 struct evsel; 16 struct evlist; 17 struct parse_events_error; 18 19 struct option; 20 struct perf_pmu; 21 struct strbuf; 22 23 const char *event_type(int type); 24 25 /* Arguments encoded in opt->value. */ 26 struct parse_events_option_args { 27 struct evlist **evlistp; 28 const char *pmu_filter; 29 }; 30 int parse_events_option(const struct option *opt, const char *str, int unset); 31 int parse_events_option_new_evlist(const struct option *opt, const char *str, int unset); 32 __attribute__((nonnull(1, 2, 4))) 33 int __parse_events(struct evlist *evlist, const char *str, const char *pmu_filter, 34 struct parse_events_error *error, struct perf_pmu *fake_pmu, 35 bool warn_if_reordered); 36 37 __attribute__((nonnull(1, 2, 3))) 38 static inline int parse_events(struct evlist *evlist, const char *str, 39 struct parse_events_error *err) 40 { 41 return __parse_events(evlist, str, /*pmu_filter=*/NULL, err, /*fake_pmu=*/NULL, 42 /*warn_if_reordered=*/true); 43 } 44 45 int parse_event(struct evlist *evlist, const char *str); 46 47 int parse_filter(const struct option *opt, const char *str, int unset); 48 int exclude_perf(const struct option *opt, const char *arg, int unset); 49 50 enum parse_events__term_val_type { 51 PARSE_EVENTS__TERM_TYPE_NUM, 52 PARSE_EVENTS__TERM_TYPE_STR, 53 }; 54 55 enum parse_events__term_type { 56 PARSE_EVENTS__TERM_TYPE_USER, 57 PARSE_EVENTS__TERM_TYPE_CONFIG, 58 PARSE_EVENTS__TERM_TYPE_CONFIG1, 59 PARSE_EVENTS__TERM_TYPE_CONFIG2, 60 PARSE_EVENTS__TERM_TYPE_CONFIG3, 61 PARSE_EVENTS__TERM_TYPE_NAME, 62 PARSE_EVENTS__TERM_TYPE_SAMPLE_PERIOD, 63 PARSE_EVENTS__TERM_TYPE_SAMPLE_FREQ, 64 PARSE_EVENTS__TERM_TYPE_BRANCH_SAMPLE_TYPE, 65 PARSE_EVENTS__TERM_TYPE_TIME, 66 PARSE_EVENTS__TERM_TYPE_CALLGRAPH, 67 PARSE_EVENTS__TERM_TYPE_STACKSIZE, 68 PARSE_EVENTS__TERM_TYPE_NOINHERIT, 69 PARSE_EVENTS__TERM_TYPE_INHERIT, 70 PARSE_EVENTS__TERM_TYPE_MAX_STACK, 71 PARSE_EVENTS__TERM_TYPE_MAX_EVENTS, 72 PARSE_EVENTS__TERM_TYPE_NOOVERWRITE, 73 PARSE_EVENTS__TERM_TYPE_OVERWRITE, 74 PARSE_EVENTS__TERM_TYPE_DRV_CFG, 75 PARSE_EVENTS__TERM_TYPE_PERCORE, 76 PARSE_EVENTS__TERM_TYPE_AUX_OUTPUT, 77 PARSE_EVENTS__TERM_TYPE_AUX_SAMPLE_SIZE, 78 PARSE_EVENTS__TERM_TYPE_METRIC_ID, 79 PARSE_EVENTS__TERM_TYPE_RAW, 80 PARSE_EVENTS__TERM_TYPE_LEGACY_CACHE, 81 PARSE_EVENTS__TERM_TYPE_HARDWARE, 82 #define __PARSE_EVENTS__TERM_TYPE_NR (PARSE_EVENTS__TERM_TYPE_HARDWARE + 1) 83 }; 84 85 struct parse_events_term { 86 /** @list: The term list the term is a part of. */ 87 struct list_head list; 88 /** 89 * @config: The left-hand side of a term assignment, so the term 90 * "event=8" would have the config be "event" 91 */ 92 const char *config; 93 /** 94 * @val: The right-hand side of a term assignment that can either be a 95 * string or a number depending on type_val. 96 */ 97 union { 98 char *str; 99 u64 num; 100 } val; 101 /** @type_val: The union variable in val to be used for the term. */ 102 enum parse_events__term_val_type type_val; 103 /** 104 * @type_term: A predefined term type or PARSE_EVENTS__TERM_TYPE_USER 105 * when not inbuilt. 106 */ 107 enum parse_events__term_type type_term; 108 /** 109 * @err_term: The column index of the term from parsing, used during 110 * error output. 111 */ 112 int err_term; 113 /** 114 * @err_val: The column index of the val from parsing, used during error 115 * output. 116 */ 117 int err_val; 118 /** @used: Was the term used during parameterized-eval. */ 119 bool used; 120 /** 121 * @weak: A term from the sysfs or json encoding of an event that 122 * shouldn't override terms coming from the command line. 123 */ 124 bool weak; 125 /** 126 * @no_value: Is there no value. If a numeric term has no value then the 127 * value is assumed to be 1. An event name also has no value. 128 */ 129 bool no_value; 130 }; 131 132 struct parse_events_error { 133 /** @list: The head of a list of errors. */ 134 struct list_head list; 135 }; 136 137 /* A wrapper around a list of terms for the sake of better type safety. */ 138 struct parse_events_terms { 139 struct list_head terms; 140 }; 141 142 struct parse_events_state { 143 /* The list parsed events are placed on. */ 144 struct list_head list; 145 /* The updated index used by entries as they are added. */ 146 int idx; 147 /* Error information. */ 148 struct parse_events_error *error; 149 /* Holds returned terms for term parsing. */ 150 struct parse_events_terms *terms; 151 /* Start token. */ 152 int stoken; 153 /* Special fake PMU marker for testing. */ 154 struct perf_pmu *fake_pmu; 155 /* If non-null, when wildcard matching only match the given PMU. */ 156 const char *pmu_filter; 157 /* Should PE_LEGACY_NAME tokens be generated for config terms? */ 158 bool match_legacy_cache_terms; 159 /* Were multiple PMUs scanned to find events? */ 160 bool wild_card_pmus; 161 }; 162 163 bool parse_events__filter_pmu(const struct parse_events_state *parse_state, 164 const struct perf_pmu *pmu); 165 void parse_events__shrink_config_terms(void); 166 int parse_events__is_hardcoded_term(struct parse_events_term *term); 167 int parse_events_term__num(struct parse_events_term **term, 168 enum parse_events__term_type type_term, 169 const char *config, u64 num, 170 bool novalue, 171 void *loc_term, void *loc_val); 172 int parse_events_term__str(struct parse_events_term **term, 173 enum parse_events__term_type type_term, 174 char *config, char *str, 175 void *loc_term, void *loc_val); 176 int parse_events_term__term(struct parse_events_term **term, 177 enum parse_events__term_type term_lhs, 178 enum parse_events__term_type term_rhs, 179 void *loc_term, void *loc_val); 180 int parse_events_term__clone(struct parse_events_term **new, 181 struct parse_events_term *term); 182 void parse_events_term__delete(struct parse_events_term *term); 183 184 void parse_events_terms__delete(struct parse_events_terms *terms); 185 void parse_events_terms__init(struct parse_events_terms *terms); 186 void parse_events_terms__exit(struct parse_events_terms *terms); 187 int parse_events_terms(struct parse_events_terms *terms, const char *str, FILE *input); 188 int parse_events_terms__to_strbuf(const struct parse_events_terms *terms, struct strbuf *sb); 189 int parse_events__modifier_event(struct list_head *list, char *str, bool add); 190 int parse_events__modifier_group(struct list_head *list, char *event_mod); 191 int parse_events_name(struct list_head *list, const char *name); 192 int parse_events_add_tracepoint(struct list_head *list, int *idx, 193 const char *sys, const char *event, 194 struct parse_events_error *error, 195 struct parse_events_terms *head_config, void *loc); 196 int parse_events_add_numeric(struct parse_events_state *parse_state, 197 struct list_head *list, 198 u32 type, u64 config, 199 struct parse_events_terms *head_config, 200 bool wildcard); 201 int parse_events_add_tool(struct parse_events_state *parse_state, 202 struct list_head *list, 203 int tool_event); 204 int parse_events_add_cache(struct list_head *list, int *idx, const char *name, 205 struct parse_events_state *parse_state, 206 struct parse_events_terms *head_config); 207 int parse_events__decode_legacy_cache(const char *name, int pmu_type, __u64 *config); 208 int parse_events_add_breakpoint(struct parse_events_state *parse_state, 209 struct list_head *list, 210 u64 addr, char *type, u64 len, 211 struct parse_events_terms *head_config); 212 int parse_events_add_pmu(struct parse_events_state *parse_state, 213 struct list_head *list, const char *name, 214 const struct parse_events_terms *const_parsed_terms, 215 bool auto_merge_stats, void *loc); 216 217 struct evsel *parse_events__add_event(int idx, struct perf_event_attr *attr, 218 const char *name, const char *metric_id, 219 struct perf_pmu *pmu); 220 221 int parse_events_multi_pmu_add(struct parse_events_state *parse_state, 222 const char *event_name, 223 const struct parse_events_terms *const_parsed_terms, 224 struct list_head **listp, void *loc); 225 226 void parse_events__set_leader(char *name, struct list_head *list); 227 void parse_events_update_lists(struct list_head *list_event, 228 struct list_head *list_all); 229 void parse_events_evlist_error(struct parse_events_state *parse_state, 230 int idx, const char *str); 231 232 struct event_symbol { 233 const char *symbol; 234 const char *alias; 235 }; 236 extern struct event_symbol event_symbols_hw[]; 237 extern struct event_symbol event_symbols_sw[]; 238 239 char *parse_events_formats_error_string(char *additional_terms); 240 241 void parse_events_error__init(struct parse_events_error *err); 242 void parse_events_error__exit(struct parse_events_error *err); 243 void parse_events_error__handle(struct parse_events_error *err, int idx, 244 char *str, char *help); 245 void parse_events_error__print(const struct parse_events_error *err, 246 const char *event); 247 bool parse_events_error__contains(const struct parse_events_error *err, 248 const char *needle); 249 #ifdef HAVE_LIBELF_SUPPORT 250 /* 251 * If the probe point starts with '%', 252 * or starts with "sdt_" and has a ':' but no '=', 253 * then it should be a SDT/cached probe point. 254 */ 255 static inline bool is_sdt_event(char *str) 256 { 257 return (str[0] == '%' || 258 (!strncmp(str, "sdt_", 4) && 259 !!strchr(str, ':') && !strchr(str, '='))); 260 } 261 #else 262 static inline bool is_sdt_event(char *str __maybe_unused) 263 { 264 return false; 265 } 266 #endif /* HAVE_LIBELF_SUPPORT */ 267 268 #endif /* __PERF_PARSE_EVENTS_H */ 269