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