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 43 /** struct perf_evsel - event selector 44 * 45 * @name - Can be set to retain the original event name passed by the user, 46 * so that when showing results in tools such as 'perf stat', we 47 * show the name used, not some alias. 48 */ 49 struct perf_evsel { 50 struct list_head node; 51 struct perf_event_attr attr; 52 char *filter; 53 struct xyarray *fd; 54 struct xyarray *sample_id; 55 u64 *id; 56 struct perf_counts *counts; 57 struct perf_counts *prev_raw_counts; 58 int idx; 59 u32 ids; 60 struct hists hists; 61 char *name; 62 struct event_format *tp_format; 63 union { 64 void *priv; 65 off_t id_offset; 66 }; 67 struct cgroup_sel *cgrp; 68 struct { 69 void *func; 70 void *data; 71 } handler; 72 struct cpu_map *cpus; 73 unsigned int sample_size; 74 bool supported; 75 bool needs_swap; 76 /* parse modifier helper */ 77 int exclude_GH; 78 int nr_members; 79 struct perf_evsel *leader; 80 char *group_name; 81 }; 82 83 #define hists_to_evsel(h) container_of(h, struct perf_evsel, hists) 84 85 struct cpu_map; 86 struct thread_map; 87 struct perf_evlist; 88 struct perf_record_opts; 89 90 struct perf_evsel *perf_evsel__new(struct perf_event_attr *attr, int idx); 91 struct perf_evsel *perf_evsel__newtp(const char *sys, const char *name, int idx); 92 93 struct event_format *event_format__new(const char *sys, const char *name); 94 95 void perf_evsel__init(struct perf_evsel *evsel, 96 struct perf_event_attr *attr, int idx); 97 void perf_evsel__exit(struct perf_evsel *evsel); 98 void perf_evsel__delete(struct perf_evsel *evsel); 99 100 void perf_evsel__config(struct perf_evsel *evsel, 101 struct perf_record_opts *opts); 102 103 bool perf_evsel__is_cache_op_valid(u8 type, u8 op); 104 105 #define PERF_EVSEL__MAX_ALIASES 8 106 107 extern const char *perf_evsel__hw_cache[PERF_COUNT_HW_CACHE_MAX] 108 [PERF_EVSEL__MAX_ALIASES]; 109 extern const char *perf_evsel__hw_cache_op[PERF_COUNT_HW_CACHE_OP_MAX] 110 [PERF_EVSEL__MAX_ALIASES]; 111 extern const char *perf_evsel__hw_cache_result[PERF_COUNT_HW_CACHE_RESULT_MAX] 112 [PERF_EVSEL__MAX_ALIASES]; 113 extern const char *perf_evsel__hw_names[PERF_COUNT_HW_MAX]; 114 extern const char *perf_evsel__sw_names[PERF_COUNT_SW_MAX]; 115 int __perf_evsel__hw_cache_type_op_res_name(u8 type, u8 op, u8 result, 116 char *bf, size_t size); 117 const char *perf_evsel__name(struct perf_evsel *evsel); 118 const char *perf_evsel__group_name(struct perf_evsel *evsel); 119 int perf_evsel__group_desc(struct perf_evsel *evsel, char *buf, size_t size); 120 121 int perf_evsel__alloc_fd(struct perf_evsel *evsel, int ncpus, int nthreads); 122 int perf_evsel__alloc_id(struct perf_evsel *evsel, int ncpus, int nthreads); 123 int perf_evsel__alloc_counts(struct perf_evsel *evsel, int ncpus); 124 void perf_evsel__reset_counts(struct perf_evsel *evsel, int ncpus); 125 void perf_evsel__free_fd(struct perf_evsel *evsel); 126 void perf_evsel__free_id(struct perf_evsel *evsel); 127 void perf_evsel__free_counts(struct perf_evsel *evsel); 128 void perf_evsel__close_fd(struct perf_evsel *evsel, int ncpus, int nthreads); 129 130 void __perf_evsel__set_sample_bit(struct perf_evsel *evsel, 131 enum perf_event_sample_format bit); 132 void __perf_evsel__reset_sample_bit(struct perf_evsel *evsel, 133 enum perf_event_sample_format bit); 134 135 #define perf_evsel__set_sample_bit(evsel, bit) \ 136 __perf_evsel__set_sample_bit(evsel, PERF_SAMPLE_##bit) 137 138 #define perf_evsel__reset_sample_bit(evsel, bit) \ 139 __perf_evsel__reset_sample_bit(evsel, PERF_SAMPLE_##bit) 140 141 void perf_evsel__set_sample_id(struct perf_evsel *evsel); 142 143 int perf_evsel__set_filter(struct perf_evsel *evsel, int ncpus, int nthreads, 144 const char *filter); 145 146 int perf_evsel__open_per_cpu(struct perf_evsel *evsel, 147 struct cpu_map *cpus); 148 int perf_evsel__open_per_thread(struct perf_evsel *evsel, 149 struct thread_map *threads); 150 int perf_evsel__open(struct perf_evsel *evsel, struct cpu_map *cpus, 151 struct thread_map *threads); 152 void perf_evsel__close(struct perf_evsel *evsel, int ncpus, int nthreads); 153 154 struct perf_sample; 155 156 void *perf_evsel__rawptr(struct perf_evsel *evsel, struct perf_sample *sample, 157 const char *name); 158 u64 perf_evsel__intval(struct perf_evsel *evsel, struct perf_sample *sample, 159 const char *name); 160 161 static inline char *perf_evsel__strval(struct perf_evsel *evsel, 162 struct perf_sample *sample, 163 const char *name) 164 { 165 return perf_evsel__rawptr(evsel, sample, name); 166 } 167 168 struct format_field; 169 170 struct format_field *perf_evsel__field(struct perf_evsel *evsel, const char *name); 171 172 #define perf_evsel__match(evsel, t, c) \ 173 (evsel->attr.type == PERF_TYPE_##t && \ 174 evsel->attr.config == PERF_COUNT_##c) 175 176 static inline bool perf_evsel__match2(struct perf_evsel *e1, 177 struct perf_evsel *e2) 178 { 179 return (e1->attr.type == e2->attr.type) && 180 (e1->attr.config == e2->attr.config); 181 } 182 183 int __perf_evsel__read_on_cpu(struct perf_evsel *evsel, 184 int cpu, int thread, bool scale); 185 186 /** 187 * perf_evsel__read_on_cpu - Read out the results on a CPU and thread 188 * 189 * @evsel - event selector to read value 190 * @cpu - CPU of interest 191 * @thread - thread of interest 192 */ 193 static inline int perf_evsel__read_on_cpu(struct perf_evsel *evsel, 194 int cpu, int thread) 195 { 196 return __perf_evsel__read_on_cpu(evsel, cpu, thread, false); 197 } 198 199 /** 200 * perf_evsel__read_on_cpu_scaled - Read out the results on a CPU and thread, scaled 201 * 202 * @evsel - event selector to read value 203 * @cpu - CPU of interest 204 * @thread - thread of interest 205 */ 206 static inline int perf_evsel__read_on_cpu_scaled(struct perf_evsel *evsel, 207 int cpu, int thread) 208 { 209 return __perf_evsel__read_on_cpu(evsel, cpu, thread, true); 210 } 211 212 int __perf_evsel__read(struct perf_evsel *evsel, int ncpus, int nthreads, 213 bool scale); 214 215 /** 216 * perf_evsel__read - Read the aggregate results on all CPUs 217 * 218 * @evsel - event selector to read value 219 * @ncpus - Number of cpus affected, from zero 220 * @nthreads - Number of threads affected, from zero 221 */ 222 static inline int perf_evsel__read(struct perf_evsel *evsel, 223 int ncpus, int nthreads) 224 { 225 return __perf_evsel__read(evsel, ncpus, nthreads, false); 226 } 227 228 /** 229 * perf_evsel__read_scaled - Read the aggregate results on all CPUs, scaled 230 * 231 * @evsel - event selector to read value 232 * @ncpus - Number of cpus affected, from zero 233 * @nthreads - Number of threads affected, from zero 234 */ 235 static inline int perf_evsel__read_scaled(struct perf_evsel *evsel, 236 int ncpus, int nthreads) 237 { 238 return __perf_evsel__read(evsel, ncpus, nthreads, true); 239 } 240 241 void hists__init(struct hists *hists); 242 243 int perf_evsel__parse_sample(struct perf_evsel *evsel, union perf_event *event, 244 struct perf_sample *sample); 245 246 static inline struct perf_evsel *perf_evsel__next(struct perf_evsel *evsel) 247 { 248 return list_entry(evsel->node.next, struct perf_evsel, node); 249 } 250 251 /** 252 * perf_evsel__is_group_leader - Return whether given evsel is a leader event 253 * 254 * @evsel - evsel selector to be tested 255 * 256 * Return %true if @evsel is a group leader or a stand-alone event 257 */ 258 static inline bool perf_evsel__is_group_leader(const struct perf_evsel *evsel) 259 { 260 return evsel->leader == evsel; 261 } 262 263 /** 264 * perf_evsel__is_group_event - Return whether given evsel is a group event 265 * 266 * @evsel - evsel selector to be tested 267 * 268 * Return %true iff event group view is enabled and @evsel is a actual group 269 * leader which has other members in the group 270 */ 271 static inline bool perf_evsel__is_group_event(struct perf_evsel *evsel) 272 { 273 if (!symbol_conf.event_group) 274 return false; 275 276 return perf_evsel__is_group_leader(evsel) && evsel->nr_members > 1; 277 } 278 279 struct perf_attr_details { 280 bool freq; 281 bool verbose; 282 bool event_group; 283 }; 284 285 int perf_evsel__fprintf(struct perf_evsel *evsel, 286 struct perf_attr_details *details, FILE *fp); 287 288 bool perf_evsel__fallback(struct perf_evsel *evsel, int err, 289 char *msg, size_t msgsize); 290 int perf_evsel__open_strerror(struct perf_evsel *evsel, 291 struct perf_target *target, 292 int err, char *msg, size_t size); 293 294 static inline int perf_evsel__group_idx(struct perf_evsel *evsel) 295 { 296 return evsel->idx - evsel->leader->idx; 297 } 298 299 #define for_each_group_member(_evsel, _leader) \ 300 for ((_evsel) = list_entry((_leader)->node.next, struct perf_evsel, node); \ 301 (_evsel) && (_evsel)->leader == (_leader); \ 302 (_evsel) = list_entry((_evsel)->node.next, struct perf_evsel, node)) 303 304 #endif /* __PERF_EVSEL_H */ 305