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 <string.h> 13 14 struct evsel; 15 struct evlist; 16 struct parse_events_error; 17 18 struct option; 19 struct perf_pmu; 20 21 const char *event_type(int type); 22 23 /* Arguments encoded in opt->value. */ 24 struct parse_events_option_args { 25 struct evlist **evlistp; 26 const char *pmu_filter; 27 }; 28 int parse_events_option(const struct option *opt, const char *str, int unset); 29 int parse_events_option_new_evlist(const struct option *opt, const char *str, int unset); 30 __attribute__((nonnull(1, 2, 4))) 31 int __parse_events(struct evlist *evlist, const char *str, const char *pmu_filter, 32 struct parse_events_error *error, struct perf_pmu *fake_pmu, 33 bool warn_if_reordered); 34 35 __attribute__((nonnull(1, 2, 3))) 36 static inline int parse_events(struct evlist *evlist, const char *str, 37 struct parse_events_error *err) 38 { 39 return __parse_events(evlist, str, /*pmu_filter=*/NULL, err, /*fake_pmu=*/NULL, 40 /*warn_if_reordered=*/true); 41 } 42 43 int parse_event(struct evlist *evlist, const char *str); 44 45 int parse_events_terms(struct list_head *terms, const char *str); 46 int parse_filter(const struct option *opt, const char *str, int unset); 47 int exclude_perf(const struct option *opt, const char *arg, int unset); 48 49 enum { 50 PARSE_EVENTS__TERM_TYPE_NUM, 51 PARSE_EVENTS__TERM_TYPE_STR, 52 }; 53 54 enum { 55 PARSE_EVENTS__TERM_TYPE_USER, 56 PARSE_EVENTS__TERM_TYPE_CONFIG, 57 PARSE_EVENTS__TERM_TYPE_CONFIG1, 58 PARSE_EVENTS__TERM_TYPE_CONFIG2, 59 PARSE_EVENTS__TERM_TYPE_CONFIG3, 60 PARSE_EVENTS__TERM_TYPE_NAME, 61 PARSE_EVENTS__TERM_TYPE_SAMPLE_PERIOD, 62 PARSE_EVENTS__TERM_TYPE_SAMPLE_FREQ, 63 PARSE_EVENTS__TERM_TYPE_BRANCH_SAMPLE_TYPE, 64 PARSE_EVENTS__TERM_TYPE_TIME, 65 PARSE_EVENTS__TERM_TYPE_CALLGRAPH, 66 PARSE_EVENTS__TERM_TYPE_STACKSIZE, 67 PARSE_EVENTS__TERM_TYPE_NOINHERIT, 68 PARSE_EVENTS__TERM_TYPE_INHERIT, 69 PARSE_EVENTS__TERM_TYPE_MAX_STACK, 70 PARSE_EVENTS__TERM_TYPE_MAX_EVENTS, 71 PARSE_EVENTS__TERM_TYPE_NOOVERWRITE, 72 PARSE_EVENTS__TERM_TYPE_OVERWRITE, 73 PARSE_EVENTS__TERM_TYPE_DRV_CFG, 74 PARSE_EVENTS__TERM_TYPE_PERCORE, 75 PARSE_EVENTS__TERM_TYPE_AUX_OUTPUT, 76 PARSE_EVENTS__TERM_TYPE_AUX_SAMPLE_SIZE, 77 PARSE_EVENTS__TERM_TYPE_METRIC_ID, 78 PARSE_EVENTS__TERM_TYPE_RAW, 79 PARSE_EVENTS__TERM_TYPE_LEGACY_CACHE, 80 PARSE_EVENTS__TERM_TYPE_HARDWARE, 81 __PARSE_EVENTS__TERM_TYPE_NR, 82 }; 83 84 struct parse_events_term { 85 char *config; 86 union { 87 char *str; 88 u64 num; 89 } val; 90 int type_val; 91 int type_term; 92 struct list_head list; 93 bool used; 94 bool no_value; 95 96 /* error string indexes for within parsed string */ 97 int err_term; 98 int err_val; 99 100 /* Coming from implicit alias */ 101 bool weak; 102 }; 103 104 struct parse_events_error { 105 int num_errors; /* number of errors encountered */ 106 int idx; /* index in the parsed string */ 107 char *str; /* string to display at the index */ 108 char *help; /* optional help string */ 109 int first_idx;/* as above, but for the first encountered error */ 110 char *first_str; 111 char *first_help; 112 }; 113 114 struct parse_events_state { 115 /* The list parsed events are placed on. */ 116 struct list_head list; 117 /* The updated index used by entries as they are added. */ 118 int idx; 119 /* Error information. */ 120 struct parse_events_error *error; 121 /* Used by BPF event creation. */ 122 struct evlist *evlist; 123 /* Holds returned terms for term parsing. */ 124 struct list_head *terms; 125 /* Start token. */ 126 int stoken; 127 /* Special fake PMU marker for testing. */ 128 struct perf_pmu *fake_pmu; 129 /* If non-null, when wildcard matching only match the given PMU. */ 130 const char *pmu_filter; 131 /* Should PE_LEGACY_NAME tokens be generated for config terms? */ 132 bool match_legacy_cache_terms; 133 /* Were multiple PMUs scanned to find events? */ 134 bool wild_card_pmus; 135 }; 136 137 bool parse_events__filter_pmu(const struct parse_events_state *parse_state, 138 const struct perf_pmu *pmu); 139 void parse_events__shrink_config_terms(void); 140 int parse_events__is_hardcoded_term(struct parse_events_term *term); 141 int parse_events_term__num(struct parse_events_term **term, 142 int type_term, char *config, u64 num, 143 bool novalue, 144 void *loc_term, void *loc_val); 145 int parse_events_term__str(struct parse_events_term **term, 146 int type_term, char *config, char *str, 147 void *loc_term, void *loc_val); 148 int parse_events_term__term(struct parse_events_term **term, 149 int term_lhs, int term_rhs, 150 void *loc_term, void *loc_val); 151 int parse_events_term__clone(struct parse_events_term **new, 152 struct parse_events_term *term); 153 void parse_events_term__delete(struct parse_events_term *term); 154 void parse_events_terms__delete(struct list_head *terms); 155 void parse_events_terms__purge(struct list_head *terms); 156 int parse_events__modifier_event(struct list_head *list, char *str, bool add); 157 int parse_events__modifier_group(struct list_head *list, char *event_mod); 158 int parse_events_name(struct list_head *list, const char *name); 159 int parse_events_add_tracepoint(struct list_head *list, int *idx, 160 const char *sys, const char *event, 161 struct parse_events_error *error, 162 struct list_head *head_config, void *loc); 163 int parse_events_load_bpf(struct parse_events_state *parse_state, 164 struct list_head *list, 165 char *bpf_file_name, 166 bool source, 167 struct list_head *head_config, 168 void *loc); 169 /* Provide this function for perf test */ 170 struct bpf_object; 171 int parse_events_load_bpf_obj(struct parse_events_state *parse_state, 172 struct list_head *list, 173 struct bpf_object *obj, 174 struct list_head *head_config, 175 void *loc); 176 int parse_events_add_numeric(struct parse_events_state *parse_state, 177 struct list_head *list, 178 u32 type, u64 config, 179 struct list_head *head_config, 180 bool wildcard); 181 int parse_events_add_tool(struct parse_events_state *parse_state, 182 struct list_head *list, 183 int tool_event); 184 int parse_events_add_cache(struct list_head *list, int *idx, const char *name, 185 struct parse_events_state *parse_state, 186 struct list_head *head_config); 187 int parse_events__decode_legacy_cache(const char *name, int pmu_type, __u64 *config); 188 int parse_events_add_breakpoint(struct parse_events_state *parse_state, 189 struct list_head *list, 190 u64 addr, char *type, u64 len, 191 struct list_head *head_config); 192 int parse_events_add_pmu(struct parse_events_state *parse_state, 193 struct list_head *list, char *name, 194 struct list_head *head_config, 195 bool auto_merge_stats, void *loc); 196 197 struct evsel *parse_events__add_event(int idx, struct perf_event_attr *attr, 198 const char *name, const char *metric_id, 199 struct perf_pmu *pmu); 200 201 int parse_events_multi_pmu_add(struct parse_events_state *parse_state, 202 char *str, 203 struct list_head *head_config, 204 struct list_head **listp, void *loc); 205 206 int parse_events_copy_term_list(struct list_head *old, 207 struct list_head **new); 208 209 void parse_events__set_leader(char *name, struct list_head *list); 210 void parse_events_update_lists(struct list_head *list_event, 211 struct list_head *list_all); 212 void parse_events_evlist_error(struct parse_events_state *parse_state, 213 int idx, const char *str); 214 215 struct event_symbol { 216 const char *symbol; 217 const char *alias; 218 }; 219 extern struct event_symbol event_symbols_hw[]; 220 extern struct event_symbol event_symbols_sw[]; 221 222 char *parse_events_formats_error_string(char *additional_terms); 223 224 void parse_events_error__init(struct parse_events_error *err); 225 void parse_events_error__exit(struct parse_events_error *err); 226 void parse_events_error__handle(struct parse_events_error *err, int idx, 227 char *str, char *help); 228 void parse_events_error__print(struct parse_events_error *err, 229 const char *event); 230 231 #ifdef HAVE_LIBELF_SUPPORT 232 /* 233 * If the probe point starts with '%', 234 * or starts with "sdt_" and has a ':' but no '=', 235 * then it should be a SDT/cached probe point. 236 */ 237 static inline bool is_sdt_event(char *str) 238 { 239 return (str[0] == '%' || 240 (!strncmp(str, "sdt_", 4) && 241 !!strchr(str, ':') && !strchr(str, '='))); 242 } 243 #else 244 static inline bool is_sdt_event(char *str __maybe_unused) 245 { 246 return false; 247 } 248 #endif /* HAVE_LIBELF_SUPPORT */ 249 250 #endif /* __PERF_PARSE_EVENTS_H */ 251