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