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