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