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 40 /* Holds total ID period value for PERF_SAMPLE_READ processing. */ 41 u64 period; 42 }; 43 44 struct cgroup_sel; 45 46 /** struct perf_evsel - event selector 47 * 48 * @name - Can be set to retain the original event name passed by the user, 49 * so that when showing results in tools such as 'perf stat', we 50 * show the name used, not some alias. 51 * @id_pos: the position of the event id (PERF_SAMPLE_ID or 52 * PERF_SAMPLE_IDENTIFIER) in a sample event i.e. in the array of 53 * struct sample_event 54 * @is_pos: the position (counting backwards) of the event id (PERF_SAMPLE_ID or 55 * PERF_SAMPLE_IDENTIFIER) in a non-sample event i.e. if sample_id_all 56 * is used there is an id sample appended to non-sample events 57 */ 58 struct perf_evsel { 59 struct list_head node; 60 struct perf_event_attr attr; 61 char *filter; 62 struct xyarray *fd; 63 struct xyarray *sample_id; 64 u64 *id; 65 struct perf_counts *counts; 66 struct perf_counts *prev_raw_counts; 67 int idx; 68 u32 ids; 69 char *name; 70 double scale; 71 const char *unit; 72 struct event_format *tp_format; 73 union { 74 void *priv; 75 off_t id_offset; 76 }; 77 struct cgroup_sel *cgrp; 78 void *handler; 79 struct cpu_map *cpus; 80 unsigned int sample_size; 81 int id_pos; 82 int is_pos; 83 bool supported; 84 bool needs_swap; 85 bool no_aux_samples; 86 bool immediate; 87 bool system_wide; 88 bool tracking; 89 /* parse modifier helper */ 90 int exclude_GH; 91 int nr_members; 92 int sample_read; 93 struct perf_evsel *leader; 94 char *group_name; 95 }; 96 97 union u64_swap { 98 u64 val64; 99 u32 val32[2]; 100 }; 101 102 struct cpu_map; 103 struct target; 104 struct thread_map; 105 struct perf_evlist; 106 struct record_opts; 107 108 int perf_evsel__object_config(size_t object_size, 109 int (*init)(struct perf_evsel *evsel), 110 void (*fini)(struct perf_evsel *evsel)); 111 112 struct perf_evsel *perf_evsel__new_idx(struct perf_event_attr *attr, int idx); 113 114 static inline struct perf_evsel *perf_evsel__new(struct perf_event_attr *attr) 115 { 116 return perf_evsel__new_idx(attr, 0); 117 } 118 119 struct perf_evsel *perf_evsel__newtp_idx(const char *sys, const char *name, int idx); 120 121 static inline struct perf_evsel *perf_evsel__newtp(const char *sys, const char *name) 122 { 123 return perf_evsel__newtp_idx(sys, name, 0); 124 } 125 126 struct event_format *event_format__new(const char *sys, const char *name); 127 128 void perf_evsel__init(struct perf_evsel *evsel, 129 struct perf_event_attr *attr, int idx); 130 void perf_evsel__exit(struct perf_evsel *evsel); 131 void perf_evsel__delete(struct perf_evsel *evsel); 132 133 void perf_evsel__config(struct perf_evsel *evsel, 134 struct record_opts *opts); 135 136 int __perf_evsel__sample_size(u64 sample_type); 137 void perf_evsel__calc_id_pos(struct perf_evsel *evsel); 138 139 bool perf_evsel__is_cache_op_valid(u8 type, u8 op); 140 141 #define PERF_EVSEL__MAX_ALIASES 8 142 143 extern const char *perf_evsel__hw_cache[PERF_COUNT_HW_CACHE_MAX] 144 [PERF_EVSEL__MAX_ALIASES]; 145 extern const char *perf_evsel__hw_cache_op[PERF_COUNT_HW_CACHE_OP_MAX] 146 [PERF_EVSEL__MAX_ALIASES]; 147 extern const char *perf_evsel__hw_cache_result[PERF_COUNT_HW_CACHE_RESULT_MAX] 148 [PERF_EVSEL__MAX_ALIASES]; 149 extern const char *perf_evsel__hw_names[PERF_COUNT_HW_MAX]; 150 extern const char *perf_evsel__sw_names[PERF_COUNT_SW_MAX]; 151 int __perf_evsel__hw_cache_type_op_res_name(u8 type, u8 op, u8 result, 152 char *bf, size_t size); 153 const char *perf_evsel__name(struct perf_evsel *evsel); 154 155 const char *perf_evsel__group_name(struct perf_evsel *evsel); 156 int perf_evsel__group_desc(struct perf_evsel *evsel, char *buf, size_t size); 157 158 int perf_evsel__alloc_id(struct perf_evsel *evsel, int ncpus, int nthreads); 159 int perf_evsel__alloc_counts(struct perf_evsel *evsel, int ncpus); 160 void perf_evsel__reset_counts(struct perf_evsel *evsel, int ncpus); 161 void perf_evsel__free_counts(struct perf_evsel *evsel); 162 void perf_evsel__close_fd(struct perf_evsel *evsel, int ncpus, int nthreads); 163 164 void __perf_evsel__set_sample_bit(struct perf_evsel *evsel, 165 enum perf_event_sample_format bit); 166 void __perf_evsel__reset_sample_bit(struct perf_evsel *evsel, 167 enum perf_event_sample_format bit); 168 169 #define perf_evsel__set_sample_bit(evsel, bit) \ 170 __perf_evsel__set_sample_bit(evsel, PERF_SAMPLE_##bit) 171 172 #define perf_evsel__reset_sample_bit(evsel, bit) \ 173 __perf_evsel__reset_sample_bit(evsel, PERF_SAMPLE_##bit) 174 175 void perf_evsel__set_sample_id(struct perf_evsel *evsel, 176 bool use_sample_identifier); 177 178 int perf_evsel__set_filter(struct perf_evsel *evsel, int ncpus, int nthreads, 179 const char *filter); 180 int perf_evsel__enable(struct perf_evsel *evsel, int ncpus, int nthreads); 181 182 int perf_evsel__open_per_cpu(struct perf_evsel *evsel, 183 struct cpu_map *cpus); 184 int perf_evsel__open_per_thread(struct perf_evsel *evsel, 185 struct thread_map *threads); 186 int perf_evsel__open(struct perf_evsel *evsel, struct cpu_map *cpus, 187 struct thread_map *threads); 188 void perf_evsel__close(struct perf_evsel *evsel, int ncpus, int nthreads); 189 190 struct perf_sample; 191 192 void *perf_evsel__rawptr(struct perf_evsel *evsel, struct perf_sample *sample, 193 const char *name); 194 u64 perf_evsel__intval(struct perf_evsel *evsel, struct perf_sample *sample, 195 const char *name); 196 197 static inline char *perf_evsel__strval(struct perf_evsel *evsel, 198 struct perf_sample *sample, 199 const char *name) 200 { 201 return perf_evsel__rawptr(evsel, sample, name); 202 } 203 204 struct format_field; 205 206 struct format_field *perf_evsel__field(struct perf_evsel *evsel, const char *name); 207 208 #define perf_evsel__match(evsel, t, c) \ 209 (evsel->attr.type == PERF_TYPE_##t && \ 210 evsel->attr.config == PERF_COUNT_##c) 211 212 static inline bool perf_evsel__match2(struct perf_evsel *e1, 213 struct perf_evsel *e2) 214 { 215 return (e1->attr.type == e2->attr.type) && 216 (e1->attr.config == e2->attr.config); 217 } 218 219 #define perf_evsel__cmp(a, b) \ 220 ((a) && \ 221 (b) && \ 222 (a)->attr.type == (b)->attr.type && \ 223 (a)->attr.config == (b)->attr.config) 224 225 int __perf_evsel__read_on_cpu(struct perf_evsel *evsel, 226 int cpu, int thread, bool scale); 227 228 /** 229 * perf_evsel__read_on_cpu - Read out the results on a CPU and thread 230 * 231 * @evsel - event selector to read value 232 * @cpu - CPU of interest 233 * @thread - thread of interest 234 */ 235 static inline int perf_evsel__read_on_cpu(struct perf_evsel *evsel, 236 int cpu, int thread) 237 { 238 return __perf_evsel__read_on_cpu(evsel, cpu, thread, false); 239 } 240 241 /** 242 * perf_evsel__read_on_cpu_scaled - Read out the results on a CPU and thread, scaled 243 * 244 * @evsel - event selector to read value 245 * @cpu - CPU of interest 246 * @thread - thread of interest 247 */ 248 static inline int perf_evsel__read_on_cpu_scaled(struct perf_evsel *evsel, 249 int cpu, int thread) 250 { 251 return __perf_evsel__read_on_cpu(evsel, cpu, thread, true); 252 } 253 254 int __perf_evsel__read(struct perf_evsel *evsel, int ncpus, int nthreads, 255 bool scale); 256 257 /** 258 * perf_evsel__read - Read the aggregate results on all CPUs 259 * 260 * @evsel - event selector to read value 261 * @ncpus - Number of cpus affected, from zero 262 * @nthreads - Number of threads affected, from zero 263 */ 264 static inline int perf_evsel__read(struct perf_evsel *evsel, 265 int ncpus, int nthreads) 266 { 267 return __perf_evsel__read(evsel, ncpus, nthreads, false); 268 } 269 270 /** 271 * perf_evsel__read_scaled - Read the aggregate results on all CPUs, scaled 272 * 273 * @evsel - event selector to read value 274 * @ncpus - Number of cpus affected, from zero 275 * @nthreads - Number of threads affected, from zero 276 */ 277 static inline int perf_evsel__read_scaled(struct perf_evsel *evsel, 278 int ncpus, int nthreads) 279 { 280 return __perf_evsel__read(evsel, ncpus, nthreads, true); 281 } 282 283 int perf_evsel__parse_sample(struct perf_evsel *evsel, union perf_event *event, 284 struct perf_sample *sample); 285 286 static inline struct perf_evsel *perf_evsel__next(struct perf_evsel *evsel) 287 { 288 return list_entry(evsel->node.next, struct perf_evsel, node); 289 } 290 291 static inline struct perf_evsel *perf_evsel__prev(struct perf_evsel *evsel) 292 { 293 return list_entry(evsel->node.prev, struct perf_evsel, node); 294 } 295 296 /** 297 * perf_evsel__is_group_leader - Return whether given evsel is a leader event 298 * 299 * @evsel - evsel selector to be tested 300 * 301 * Return %true if @evsel is a group leader or a stand-alone event 302 */ 303 static inline bool perf_evsel__is_group_leader(const struct perf_evsel *evsel) 304 { 305 return evsel->leader == evsel; 306 } 307 308 /** 309 * perf_evsel__is_group_event - Return whether given evsel is a group event 310 * 311 * @evsel - evsel selector to be tested 312 * 313 * Return %true iff event group view is enabled and @evsel is a actual group 314 * leader which has other members in the group 315 */ 316 static inline bool perf_evsel__is_group_event(struct perf_evsel *evsel) 317 { 318 if (!symbol_conf.event_group) 319 return false; 320 321 return perf_evsel__is_group_leader(evsel) && evsel->nr_members > 1; 322 } 323 324 /** 325 * perf_evsel__is_function_event - Return whether given evsel is a function 326 * trace event 327 * 328 * @evsel - evsel selector to be tested 329 * 330 * Return %true if event is function trace event 331 */ 332 static inline bool perf_evsel__is_function_event(struct perf_evsel *evsel) 333 { 334 #define FUNCTION_EVENT "ftrace:function" 335 336 return evsel->name && 337 !strncmp(FUNCTION_EVENT, evsel->name, sizeof(FUNCTION_EVENT)); 338 339 #undef FUNCTION_EVENT 340 } 341 342 struct perf_attr_details { 343 bool freq; 344 bool verbose; 345 bool event_group; 346 }; 347 348 int perf_evsel__fprintf(struct perf_evsel *evsel, 349 struct perf_attr_details *details, FILE *fp); 350 351 bool perf_evsel__fallback(struct perf_evsel *evsel, int err, 352 char *msg, size_t msgsize); 353 int perf_evsel__open_strerror(struct perf_evsel *evsel, struct target *target, 354 int err, char *msg, size_t size); 355 356 static inline int perf_evsel__group_idx(struct perf_evsel *evsel) 357 { 358 return evsel->idx - evsel->leader->idx; 359 } 360 361 #define for_each_group_member(_evsel, _leader) \ 362 for ((_evsel) = list_entry((_leader)->node.next, struct perf_evsel, node); \ 363 (_evsel) && (_evsel)->leader == (_leader); \ 364 (_evsel) = list_entry((_evsel)->node.next, struct perf_evsel, node)) 365 366 #endif /* __PERF_EVSEL_H */ 367