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 "cgroup.h" 11 #include "hist.h" 12 #include "symbol.h" 13 14 struct perf_counts_values { 15 union { 16 struct { 17 u64 val; 18 u64 ena; 19 u64 run; 20 }; 21 u64 values[3]; 22 }; 23 }; 24 25 struct perf_counts { 26 s8 scaled; 27 struct perf_counts_values aggr; 28 struct perf_counts_values cpu[]; 29 }; 30 31 struct perf_evsel; 32 33 /* 34 * Per fd, to map back from PERF_SAMPLE_ID to evsel, only used when there are 35 * more than one entry in the evlist. 36 */ 37 struct perf_sample_id { 38 struct hlist_node node; 39 u64 id; 40 struct perf_evsel *evsel; 41 42 /* Holds total ID period value for PERF_SAMPLE_READ processing. */ 43 u64 period; 44 }; 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 struct hists hists; 70 char *name; 71 double scale; 72 const char *unit; 73 struct event_format *tp_format; 74 union { 75 void *priv; 76 off_t id_offset; 77 }; 78 struct cgroup_sel *cgrp; 79 void *handler; 80 struct cpu_map *cpus; 81 unsigned int sample_size; 82 int id_pos; 83 int is_pos; 84 bool supported; 85 bool needs_swap; 86 bool no_aux_samples; 87 bool immediate; 88 /* parse modifier helper */ 89 int exclude_GH; 90 int nr_members; 91 int sample_read; 92 struct perf_evsel *leader; 93 char *group_name; 94 }; 95 96 union u64_swap { 97 u64 val64; 98 u32 val32[2]; 99 }; 100 101 #define hists_to_evsel(h) container_of(h, struct perf_evsel, hists) 102 103 struct cpu_map; 104 struct thread_map; 105 struct perf_evlist; 106 struct record_opts; 107 108 struct perf_evsel *perf_evsel__new_idx(struct perf_event_attr *attr, int idx); 109 110 static inline struct perf_evsel *perf_evsel__new(struct perf_event_attr *attr) 111 { 112 return perf_evsel__new_idx(attr, 0); 113 } 114 115 struct perf_evsel *perf_evsel__newtp_idx(const char *sys, const char *name, int idx); 116 117 static inline struct perf_evsel *perf_evsel__newtp(const char *sys, const char *name) 118 { 119 return perf_evsel__newtp_idx(sys, name, 0); 120 } 121 122 struct event_format *event_format__new(const char *sys, const char *name); 123 124 void perf_evsel__init(struct perf_evsel *evsel, 125 struct perf_event_attr *attr, int idx); 126 void perf_evsel__exit(struct perf_evsel *evsel); 127 void perf_evsel__delete(struct perf_evsel *evsel); 128 129 void perf_evsel__config(struct perf_evsel *evsel, 130 struct record_opts *opts); 131 132 int __perf_evsel__sample_size(u64 sample_type); 133 void perf_evsel__calc_id_pos(struct perf_evsel *evsel); 134 135 bool perf_evsel__is_cache_op_valid(u8 type, u8 op); 136 137 #define PERF_EVSEL__MAX_ALIASES 8 138 139 extern const char *perf_evsel__hw_cache[PERF_COUNT_HW_CACHE_MAX] 140 [PERF_EVSEL__MAX_ALIASES]; 141 extern const char *perf_evsel__hw_cache_op[PERF_COUNT_HW_CACHE_OP_MAX] 142 [PERF_EVSEL__MAX_ALIASES]; 143 extern const char *perf_evsel__hw_cache_result[PERF_COUNT_HW_CACHE_RESULT_MAX] 144 [PERF_EVSEL__MAX_ALIASES]; 145 extern const char *perf_evsel__hw_names[PERF_COUNT_HW_MAX]; 146 extern const char *perf_evsel__sw_names[PERF_COUNT_SW_MAX]; 147 int __perf_evsel__hw_cache_type_op_res_name(u8 type, u8 op, u8 result, 148 char *bf, size_t size); 149 const char *perf_evsel__name(struct perf_evsel *evsel); 150 151 const char *perf_evsel__group_name(struct perf_evsel *evsel); 152 int perf_evsel__group_desc(struct perf_evsel *evsel, char *buf, size_t size); 153 154 int perf_evsel__alloc_fd(struct perf_evsel *evsel, int ncpus, int nthreads); 155 int perf_evsel__alloc_id(struct perf_evsel *evsel, int ncpus, int nthreads); 156 int perf_evsel__alloc_counts(struct perf_evsel *evsel, int ncpus); 157 void perf_evsel__reset_counts(struct perf_evsel *evsel, int ncpus); 158 void perf_evsel__free_fd(struct perf_evsel *evsel); 159 void perf_evsel__free_id(struct perf_evsel *evsel); 160 void perf_evsel__free_counts(struct perf_evsel *evsel); 161 void perf_evsel__close_fd(struct perf_evsel *evsel, int ncpus, int nthreads); 162 163 void __perf_evsel__set_sample_bit(struct perf_evsel *evsel, 164 enum perf_event_sample_format bit); 165 void __perf_evsel__reset_sample_bit(struct perf_evsel *evsel, 166 enum perf_event_sample_format bit); 167 168 #define perf_evsel__set_sample_bit(evsel, bit) \ 169 __perf_evsel__set_sample_bit(evsel, PERF_SAMPLE_##bit) 170 171 #define perf_evsel__reset_sample_bit(evsel, bit) \ 172 __perf_evsel__reset_sample_bit(evsel, PERF_SAMPLE_##bit) 173 174 void perf_evsel__set_sample_id(struct perf_evsel *evsel, 175 bool use_sample_identifier); 176 177 int perf_evsel__set_filter(struct perf_evsel *evsel, int ncpus, int nthreads, 178 const char *filter); 179 int perf_evsel__enable(struct perf_evsel *evsel, int ncpus, int nthreads); 180 181 int perf_evsel__open_per_cpu(struct perf_evsel *evsel, 182 struct cpu_map *cpus); 183 int perf_evsel__open_per_thread(struct perf_evsel *evsel, 184 struct thread_map *threads); 185 int perf_evsel__open(struct perf_evsel *evsel, struct cpu_map *cpus, 186 struct thread_map *threads); 187 void perf_evsel__close(struct perf_evsel *evsel, int ncpus, int nthreads); 188 189 struct perf_sample; 190 191 void *perf_evsel__rawptr(struct perf_evsel *evsel, struct perf_sample *sample, 192 const char *name); 193 u64 perf_evsel__intval(struct perf_evsel *evsel, struct perf_sample *sample, 194 const char *name); 195 196 static inline char *perf_evsel__strval(struct perf_evsel *evsel, 197 struct perf_sample *sample, 198 const char *name) 199 { 200 return perf_evsel__rawptr(evsel, sample, name); 201 } 202 203 struct format_field; 204 205 struct format_field *perf_evsel__field(struct perf_evsel *evsel, const char *name); 206 207 #define perf_evsel__match(evsel, t, c) \ 208 (evsel->attr.type == PERF_TYPE_##t && \ 209 evsel->attr.config == PERF_COUNT_##c) 210 211 static inline bool perf_evsel__match2(struct perf_evsel *e1, 212 struct perf_evsel *e2) 213 { 214 return (e1->attr.type == e2->attr.type) && 215 (e1->attr.config == e2->attr.config); 216 } 217 218 #define perf_evsel__cmp(a, b) \ 219 ((a) && \ 220 (b) && \ 221 (a)->attr.type == (b)->attr.type && \ 222 (a)->attr.config == (b)->attr.config) 223 224 int __perf_evsel__read_on_cpu(struct perf_evsel *evsel, 225 int cpu, int thread, bool scale); 226 227 /** 228 * perf_evsel__read_on_cpu - Read out the results on a CPU and thread 229 * 230 * @evsel - event selector to read value 231 * @cpu - CPU of interest 232 * @thread - thread of interest 233 */ 234 static inline int perf_evsel__read_on_cpu(struct perf_evsel *evsel, 235 int cpu, int thread) 236 { 237 return __perf_evsel__read_on_cpu(evsel, cpu, thread, false); 238 } 239 240 /** 241 * perf_evsel__read_on_cpu_scaled - Read out the results on a CPU and thread, scaled 242 * 243 * @evsel - event selector to read value 244 * @cpu - CPU of interest 245 * @thread - thread of interest 246 */ 247 static inline int perf_evsel__read_on_cpu_scaled(struct perf_evsel *evsel, 248 int cpu, int thread) 249 { 250 return __perf_evsel__read_on_cpu(evsel, cpu, thread, true); 251 } 252 253 int __perf_evsel__read(struct perf_evsel *evsel, int ncpus, int nthreads, 254 bool scale); 255 256 /** 257 * perf_evsel__read - Read the aggregate results on all CPUs 258 * 259 * @evsel - event selector to read value 260 * @ncpus - Number of cpus affected, from zero 261 * @nthreads - Number of threads affected, from zero 262 */ 263 static inline int perf_evsel__read(struct perf_evsel *evsel, 264 int ncpus, int nthreads) 265 { 266 return __perf_evsel__read(evsel, ncpus, nthreads, false); 267 } 268 269 /** 270 * perf_evsel__read_scaled - Read the aggregate results on all CPUs, scaled 271 * 272 * @evsel - event selector to read value 273 * @ncpus - Number of cpus affected, from zero 274 * @nthreads - Number of threads affected, from zero 275 */ 276 static inline int perf_evsel__read_scaled(struct perf_evsel *evsel, 277 int ncpus, int nthreads) 278 { 279 return __perf_evsel__read(evsel, ncpus, nthreads, true); 280 } 281 282 void hists__init(struct hists *hists); 283 284 int perf_evsel__parse_sample(struct perf_evsel *evsel, union perf_event *event, 285 struct perf_sample *sample); 286 287 static inline struct perf_evsel *perf_evsel__next(struct perf_evsel *evsel) 288 { 289 return list_entry(evsel->node.next, struct perf_evsel, node); 290 } 291 292 static inline struct perf_evsel *perf_evsel__prev(struct perf_evsel *evsel) 293 { 294 return list_entry(evsel->node.prev, struct perf_evsel, node); 295 } 296 297 /** 298 * perf_evsel__is_group_leader - Return whether given evsel is a leader event 299 * 300 * @evsel - evsel selector to be tested 301 * 302 * Return %true if @evsel is a group leader or a stand-alone event 303 */ 304 static inline bool perf_evsel__is_group_leader(const struct perf_evsel *evsel) 305 { 306 return evsel->leader == evsel; 307 } 308 309 /** 310 * perf_evsel__is_group_event - Return whether given evsel is a group event 311 * 312 * @evsel - evsel selector to be tested 313 * 314 * Return %true iff event group view is enabled and @evsel is a actual group 315 * leader which has other members in the group 316 */ 317 static inline bool perf_evsel__is_group_event(struct perf_evsel *evsel) 318 { 319 if (!symbol_conf.event_group) 320 return false; 321 322 return perf_evsel__is_group_leader(evsel) && evsel->nr_members > 1; 323 } 324 325 /** 326 * perf_evsel__is_function_event - Return whether given evsel is a function 327 * trace event 328 * 329 * @evsel - evsel selector to be tested 330 * 331 * Return %true if event is function trace event 332 */ 333 static inline bool perf_evsel__is_function_event(struct perf_evsel *evsel) 334 { 335 #define FUNCTION_EVENT "ftrace:function" 336 337 return evsel->name && 338 !strncmp(FUNCTION_EVENT, evsel->name, sizeof(FUNCTION_EVENT)); 339 340 #undef FUNCTION_EVENT 341 } 342 343 struct perf_attr_details { 344 bool freq; 345 bool verbose; 346 bool event_group; 347 }; 348 349 int perf_evsel__fprintf(struct perf_evsel *evsel, 350 struct perf_attr_details *details, FILE *fp); 351 352 bool perf_evsel__fallback(struct perf_evsel *evsel, int err, 353 char *msg, size_t msgsize); 354 int perf_evsel__open_strerror(struct perf_evsel *evsel, struct target *target, 355 int err, char *msg, size_t size); 356 357 static inline int perf_evsel__group_idx(struct perf_evsel *evsel) 358 { 359 return evsel->idx - evsel->leader->idx; 360 } 361 362 #define for_each_group_member(_evsel, _leader) \ 363 for ((_evsel) = list_entry((_leader)->node.next, struct perf_evsel, node); \ 364 (_evsel) && (_evsel)->leader == (_leader); \ 365 (_evsel) = list_entry((_evsel)->node.next, struct perf_evsel, node)) 366 367 #endif /* __PERF_EVSEL_H */ 368