1 #ifndef __PERF_EVSEL_H 2 #define __PERF_EVSEL_H 1 3 4 #include <linux/list.h> 5 #include <stdbool.h> 6 #include <stddef.h> 7 #include <linux/perf_event.h> 8 #include <linux/types.h> 9 #include "xyarray.h" 10 #include "symbol.h" 11 12 struct perf_counts_values { 13 union { 14 struct { 15 u64 val; 16 u64 ena; 17 u64 run; 18 }; 19 u64 values[3]; 20 }; 21 }; 22 23 struct perf_counts { 24 s8 scaled; 25 struct perf_counts_values aggr; 26 struct perf_counts_values cpu[]; 27 }; 28 29 struct perf_evsel; 30 31 /* 32 * Per fd, to map back from PERF_SAMPLE_ID to evsel, only used when there are 33 * more than one entry in the evlist. 34 */ 35 struct perf_sample_id { 36 struct hlist_node node; 37 u64 id; 38 struct perf_evsel *evsel; 39 int idx; 40 int cpu; 41 pid_t tid; 42 43 /* Holds total ID period value for PERF_SAMPLE_READ processing. */ 44 u64 period; 45 }; 46 47 struct cgroup_sel; 48 49 /** struct perf_evsel - event selector 50 * 51 * @name - Can be set to retain the original event name passed by the user, 52 * so that when showing results in tools such as 'perf stat', we 53 * show the name used, not some alias. 54 * @id_pos: the position of the event id (PERF_SAMPLE_ID or 55 * PERF_SAMPLE_IDENTIFIER) in a sample event i.e. in the array of 56 * struct sample_event 57 * @is_pos: the position (counting backwards) of the event id (PERF_SAMPLE_ID or 58 * PERF_SAMPLE_IDENTIFIER) in a non-sample event i.e. if sample_id_all 59 * is used there is an id sample appended to non-sample events 60 * @priv: And what is in its containing unnamed union are tool specific 61 */ 62 struct perf_evsel { 63 struct list_head node; 64 struct perf_event_attr attr; 65 char *filter; 66 struct xyarray *fd; 67 struct xyarray *sample_id; 68 u64 *id; 69 struct perf_counts *counts; 70 struct perf_counts *prev_raw_counts; 71 int idx; 72 u32 ids; 73 char *name; 74 double scale; 75 const char *unit; 76 bool snapshot; 77 struct event_format *tp_format; 78 union { 79 void *priv; 80 off_t id_offset; 81 u64 db_id; 82 }; 83 struct cgroup_sel *cgrp; 84 void *handler; 85 struct cpu_map *cpus; 86 unsigned int sample_size; 87 int id_pos; 88 int is_pos; 89 bool supported; 90 bool needs_swap; 91 bool no_aux_samples; 92 bool immediate; 93 bool system_wide; 94 bool tracking; 95 bool per_pkg; 96 unsigned long *per_pkg_mask; 97 /* parse modifier helper */ 98 int exclude_GH; 99 int nr_members; 100 int sample_read; 101 struct perf_evsel *leader; 102 char *group_name; 103 }; 104 105 union u64_swap { 106 u64 val64; 107 u32 val32[2]; 108 }; 109 110 struct cpu_map; 111 struct target; 112 struct thread_map; 113 struct perf_evlist; 114 struct record_opts; 115 116 void perf_counts_values__scale(struct perf_counts_values *count, 117 bool scale, s8 *pscaled); 118 119 void perf_evsel__compute_deltas(struct perf_evsel *evsel, int cpu, 120 struct perf_counts_values *count); 121 122 int perf_evsel__object_config(size_t object_size, 123 int (*init)(struct perf_evsel *evsel), 124 void (*fini)(struct perf_evsel *evsel)); 125 126 struct perf_evsel *perf_evsel__new_idx(struct perf_event_attr *attr, int idx); 127 128 static inline struct perf_evsel *perf_evsel__new(struct perf_event_attr *attr) 129 { 130 return perf_evsel__new_idx(attr, 0); 131 } 132 133 struct perf_evsel *perf_evsel__newtp_idx(const char *sys, const char *name, int idx); 134 135 static inline struct perf_evsel *perf_evsel__newtp(const char *sys, const char *name) 136 { 137 return perf_evsel__newtp_idx(sys, name, 0); 138 } 139 140 struct event_format *event_format__new(const char *sys, const char *name); 141 142 void perf_evsel__init(struct perf_evsel *evsel, 143 struct perf_event_attr *attr, int idx); 144 void perf_evsel__exit(struct perf_evsel *evsel); 145 void perf_evsel__delete(struct perf_evsel *evsel); 146 147 void perf_evsel__config(struct perf_evsel *evsel, 148 struct record_opts *opts); 149 150 int __perf_evsel__sample_size(u64 sample_type); 151 void perf_evsel__calc_id_pos(struct perf_evsel *evsel); 152 153 bool perf_evsel__is_cache_op_valid(u8 type, u8 op); 154 155 #define PERF_EVSEL__MAX_ALIASES 8 156 157 extern const char *perf_evsel__hw_cache[PERF_COUNT_HW_CACHE_MAX] 158 [PERF_EVSEL__MAX_ALIASES]; 159 extern const char *perf_evsel__hw_cache_op[PERF_COUNT_HW_CACHE_OP_MAX] 160 [PERF_EVSEL__MAX_ALIASES]; 161 extern const char *perf_evsel__hw_cache_result[PERF_COUNT_HW_CACHE_RESULT_MAX] 162 [PERF_EVSEL__MAX_ALIASES]; 163 extern const char *perf_evsel__hw_names[PERF_COUNT_HW_MAX]; 164 extern const char *perf_evsel__sw_names[PERF_COUNT_SW_MAX]; 165 int __perf_evsel__hw_cache_type_op_res_name(u8 type, u8 op, u8 result, 166 char *bf, size_t size); 167 const char *perf_evsel__name(struct perf_evsel *evsel); 168 169 const char *perf_evsel__group_name(struct perf_evsel *evsel); 170 int perf_evsel__group_desc(struct perf_evsel *evsel, char *buf, size_t size); 171 172 int perf_evsel__alloc_id(struct perf_evsel *evsel, int ncpus, int nthreads); 173 int perf_evsel__alloc_counts(struct perf_evsel *evsel, int ncpus); 174 void perf_evsel__reset_counts(struct perf_evsel *evsel, int ncpus); 175 void perf_evsel__free_counts(struct perf_evsel *evsel); 176 void perf_evsel__close_fd(struct perf_evsel *evsel, int ncpus, int nthreads); 177 178 void __perf_evsel__set_sample_bit(struct perf_evsel *evsel, 179 enum perf_event_sample_format bit); 180 void __perf_evsel__reset_sample_bit(struct perf_evsel *evsel, 181 enum perf_event_sample_format bit); 182 183 #define perf_evsel__set_sample_bit(evsel, bit) \ 184 __perf_evsel__set_sample_bit(evsel, PERF_SAMPLE_##bit) 185 186 #define perf_evsel__reset_sample_bit(evsel, bit) \ 187 __perf_evsel__reset_sample_bit(evsel, PERF_SAMPLE_##bit) 188 189 void perf_evsel__set_sample_id(struct perf_evsel *evsel, 190 bool use_sample_identifier); 191 192 int perf_evsel__set_filter(struct perf_evsel *evsel, int ncpus, int nthreads, 193 const char *filter); 194 int perf_evsel__enable(struct perf_evsel *evsel, int ncpus, int nthreads); 195 196 int perf_evsel__open_per_cpu(struct perf_evsel *evsel, 197 struct cpu_map *cpus); 198 int perf_evsel__open_per_thread(struct perf_evsel *evsel, 199 struct thread_map *threads); 200 int perf_evsel__open(struct perf_evsel *evsel, struct cpu_map *cpus, 201 struct thread_map *threads); 202 void perf_evsel__close(struct perf_evsel *evsel, int ncpus, int nthreads); 203 204 struct perf_sample; 205 206 void *perf_evsel__rawptr(struct perf_evsel *evsel, struct perf_sample *sample, 207 const char *name); 208 u64 perf_evsel__intval(struct perf_evsel *evsel, struct perf_sample *sample, 209 const char *name); 210 211 static inline char *perf_evsel__strval(struct perf_evsel *evsel, 212 struct perf_sample *sample, 213 const char *name) 214 { 215 return perf_evsel__rawptr(evsel, sample, name); 216 } 217 218 struct format_field; 219 220 struct format_field *perf_evsel__field(struct perf_evsel *evsel, const char *name); 221 222 #define perf_evsel__match(evsel, t, c) \ 223 (evsel->attr.type == PERF_TYPE_##t && \ 224 evsel->attr.config == PERF_COUNT_##c) 225 226 static inline bool perf_evsel__match2(struct perf_evsel *e1, 227 struct perf_evsel *e2) 228 { 229 return (e1->attr.type == e2->attr.type) && 230 (e1->attr.config == e2->attr.config); 231 } 232 233 #define perf_evsel__cmp(a, b) \ 234 ((a) && \ 235 (b) && \ 236 (a)->attr.type == (b)->attr.type && \ 237 (a)->attr.config == (b)->attr.config) 238 239 typedef int (perf_evsel__read_cb_t)(struct perf_evsel *evsel, 240 int cpu, int thread, 241 struct perf_counts_values *count); 242 243 int perf_evsel__read_cb(struct perf_evsel *evsel, int cpu, int thread, 244 perf_evsel__read_cb_t cb); 245 246 int __perf_evsel__read_on_cpu(struct perf_evsel *evsel, 247 int cpu, int thread, bool scale); 248 249 /** 250 * perf_evsel__read_on_cpu - Read out the results on a CPU and thread 251 * 252 * @evsel - event selector to read value 253 * @cpu - CPU of interest 254 * @thread - thread of interest 255 */ 256 static inline int perf_evsel__read_on_cpu(struct perf_evsel *evsel, 257 int cpu, int thread) 258 { 259 return __perf_evsel__read_on_cpu(evsel, cpu, thread, false); 260 } 261 262 /** 263 * perf_evsel__read_on_cpu_scaled - Read out the results on a CPU and thread, scaled 264 * 265 * @evsel - event selector to read value 266 * @cpu - CPU of interest 267 * @thread - thread of interest 268 */ 269 static inline int perf_evsel__read_on_cpu_scaled(struct perf_evsel *evsel, 270 int cpu, int thread) 271 { 272 return __perf_evsel__read_on_cpu(evsel, cpu, thread, true); 273 } 274 275 int perf_evsel__parse_sample(struct perf_evsel *evsel, union perf_event *event, 276 struct perf_sample *sample); 277 278 static inline struct perf_evsel *perf_evsel__next(struct perf_evsel *evsel) 279 { 280 return list_entry(evsel->node.next, struct perf_evsel, node); 281 } 282 283 static inline struct perf_evsel *perf_evsel__prev(struct perf_evsel *evsel) 284 { 285 return list_entry(evsel->node.prev, struct perf_evsel, node); 286 } 287 288 /** 289 * perf_evsel__is_group_leader - Return whether given evsel is a leader event 290 * 291 * @evsel - evsel selector to be tested 292 * 293 * Return %true if @evsel is a group leader or a stand-alone event 294 */ 295 static inline bool perf_evsel__is_group_leader(const struct perf_evsel *evsel) 296 { 297 return evsel->leader == evsel; 298 } 299 300 /** 301 * perf_evsel__is_group_event - Return whether given evsel is a group event 302 * 303 * @evsel - evsel selector to be tested 304 * 305 * Return %true iff event group view is enabled and @evsel is a actual group 306 * leader which has other members in the group 307 */ 308 static inline bool perf_evsel__is_group_event(struct perf_evsel *evsel) 309 { 310 if (!symbol_conf.event_group) 311 return false; 312 313 return perf_evsel__is_group_leader(evsel) && evsel->nr_members > 1; 314 } 315 316 /** 317 * perf_evsel__is_function_event - Return whether given evsel is a function 318 * trace event 319 * 320 * @evsel - evsel selector to be tested 321 * 322 * Return %true if event is function trace event 323 */ 324 static inline bool perf_evsel__is_function_event(struct perf_evsel *evsel) 325 { 326 #define FUNCTION_EVENT "ftrace:function" 327 328 return evsel->name && 329 !strncmp(FUNCTION_EVENT, evsel->name, sizeof(FUNCTION_EVENT)); 330 331 #undef FUNCTION_EVENT 332 } 333 334 struct perf_attr_details { 335 bool freq; 336 bool verbose; 337 bool event_group; 338 }; 339 340 int perf_evsel__fprintf(struct perf_evsel *evsel, 341 struct perf_attr_details *details, FILE *fp); 342 343 bool perf_evsel__fallback(struct perf_evsel *evsel, int err, 344 char *msg, size_t msgsize); 345 int perf_evsel__open_strerror(struct perf_evsel *evsel, struct target *target, 346 int err, char *msg, size_t size); 347 348 static inline int perf_evsel__group_idx(struct perf_evsel *evsel) 349 { 350 return evsel->idx - evsel->leader->idx; 351 } 352 353 #define for_each_group_member(_evsel, _leader) \ 354 for ((_evsel) = list_entry((_leader)->node.next, struct perf_evsel, node); \ 355 (_evsel) && (_evsel)->leader == (_leader); \ 356 (_evsel) = list_entry((_evsel)->node.next, struct perf_evsel, node)) 357 358 #endif /* __PERF_EVSEL_H */ 359