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