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 "symbol.h" 11 #include "cpumap.h" 12 #include "stat.h" 13 14 struct perf_evsel; 15 16 /* 17 * Per fd, to map back from PERF_SAMPLE_ID to evsel, only used when there are 18 * more than one entry in the evlist. 19 */ 20 struct perf_sample_id { 21 struct hlist_node node; 22 u64 id; 23 struct perf_evsel *evsel; 24 int idx; 25 int cpu; 26 pid_t tid; 27 28 /* Holds total ID period value for PERF_SAMPLE_READ processing. */ 29 u64 period; 30 }; 31 32 struct cgroup_sel; 33 34 /** struct perf_evsel - event selector 35 * 36 * @name - Can be set to retain the original event name passed by the user, 37 * so that when showing results in tools such as 'perf stat', we 38 * show the name used, not some alias. 39 * @id_pos: the position of the event id (PERF_SAMPLE_ID or 40 * PERF_SAMPLE_IDENTIFIER) in a sample event i.e. in the array of 41 * struct sample_event 42 * @is_pos: the position (counting backwards) of the event id (PERF_SAMPLE_ID or 43 * PERF_SAMPLE_IDENTIFIER) in a non-sample event i.e. if sample_id_all 44 * is used there is an id sample appended to non-sample events 45 * @priv: And what is in its containing unnamed union are tool specific 46 */ 47 struct perf_evsel { 48 struct list_head node; 49 struct perf_event_attr attr; 50 char *filter; 51 struct xyarray *fd; 52 struct xyarray *sample_id; 53 u64 *id; 54 struct perf_counts *counts; 55 struct perf_counts *prev_raw_counts; 56 int idx; 57 u32 ids; 58 char *name; 59 double scale; 60 const char *unit; 61 struct event_format *tp_format; 62 union { 63 void *priv; 64 off_t id_offset; 65 u64 db_id; 66 }; 67 struct cgroup_sel *cgrp; 68 void *handler; 69 struct cpu_map *cpus; 70 struct thread_map *threads; 71 unsigned int sample_size; 72 int id_pos; 73 int is_pos; 74 bool snapshot; 75 bool supported; 76 bool needs_swap; 77 bool no_aux_samples; 78 bool immediate; 79 bool system_wide; 80 bool tracking; 81 bool per_pkg; 82 /* parse modifier helper */ 83 int exclude_GH; 84 int nr_members; 85 int sample_read; 86 unsigned long *per_pkg_mask; 87 struct perf_evsel *leader; 88 char *group_name; 89 }; 90 91 union u64_swap { 92 u64 val64; 93 u32 val32[2]; 94 }; 95 96 struct cpu_map; 97 struct target; 98 struct thread_map; 99 struct perf_evlist; 100 struct record_opts; 101 102 static inline struct cpu_map *perf_evsel__cpus(struct perf_evsel *evsel) 103 { 104 return evsel->cpus; 105 } 106 107 static inline int perf_evsel__nr_cpus(struct perf_evsel *evsel) 108 { 109 return perf_evsel__cpus(evsel)->nr; 110 } 111 112 void perf_counts_values__scale(struct perf_counts_values *count, 113 bool scale, s8 *pscaled); 114 115 void perf_evsel__compute_deltas(struct perf_evsel *evsel, int cpu, int thread, 116 struct perf_counts_values *count); 117 118 int perf_evsel__object_config(size_t object_size, 119 int (*init)(struct perf_evsel *evsel), 120 void (*fini)(struct perf_evsel *evsel)); 121 122 struct perf_evsel *perf_evsel__new_idx(struct perf_event_attr *attr, int idx); 123 124 static inline struct perf_evsel *perf_evsel__new(struct perf_event_attr *attr) 125 { 126 return perf_evsel__new_idx(attr, 0); 127 } 128 129 struct perf_evsel *perf_evsel__newtp_idx(const char *sys, const char *name, int idx); 130 131 static inline struct perf_evsel *perf_evsel__newtp(const char *sys, const char *name) 132 { 133 return perf_evsel__newtp_idx(sys, name, 0); 134 } 135 136 struct event_format *event_format__new(const char *sys, const char *name); 137 138 void perf_evsel__init(struct perf_evsel *evsel, 139 struct perf_event_attr *attr, int idx); 140 void perf_evsel__exit(struct perf_evsel *evsel); 141 void perf_evsel__delete(struct perf_evsel *evsel); 142 143 void perf_evsel__config(struct perf_evsel *evsel, 144 struct record_opts *opts); 145 146 int __perf_evsel__sample_size(u64 sample_type); 147 void perf_evsel__calc_id_pos(struct perf_evsel *evsel); 148 149 bool perf_evsel__is_cache_op_valid(u8 type, u8 op); 150 151 #define PERF_EVSEL__MAX_ALIASES 8 152 153 extern const char *perf_evsel__hw_cache[PERF_COUNT_HW_CACHE_MAX] 154 [PERF_EVSEL__MAX_ALIASES]; 155 extern const char *perf_evsel__hw_cache_op[PERF_COUNT_HW_CACHE_OP_MAX] 156 [PERF_EVSEL__MAX_ALIASES]; 157 extern const char *perf_evsel__hw_cache_result[PERF_COUNT_HW_CACHE_RESULT_MAX] 158 [PERF_EVSEL__MAX_ALIASES]; 159 extern const char *perf_evsel__hw_names[PERF_COUNT_HW_MAX]; 160 extern const char *perf_evsel__sw_names[PERF_COUNT_SW_MAX]; 161 int __perf_evsel__hw_cache_type_op_res_name(u8 type, u8 op, u8 result, 162 char *bf, size_t size); 163 const char *perf_evsel__name(struct perf_evsel *evsel); 164 165 const char *perf_evsel__group_name(struct perf_evsel *evsel); 166 int perf_evsel__group_desc(struct perf_evsel *evsel, char *buf, size_t size); 167 168 int perf_evsel__alloc_id(struct perf_evsel *evsel, int ncpus, int nthreads); 169 void perf_evsel__close_fd(struct perf_evsel *evsel, int ncpus, int nthreads); 170 171 void __perf_evsel__set_sample_bit(struct perf_evsel *evsel, 172 enum perf_event_sample_format bit); 173 void __perf_evsel__reset_sample_bit(struct perf_evsel *evsel, 174 enum perf_event_sample_format bit); 175 176 #define perf_evsel__set_sample_bit(evsel, bit) \ 177 __perf_evsel__set_sample_bit(evsel, PERF_SAMPLE_##bit) 178 179 #define perf_evsel__reset_sample_bit(evsel, bit) \ 180 __perf_evsel__reset_sample_bit(evsel, PERF_SAMPLE_##bit) 181 182 void perf_evsel__set_sample_id(struct perf_evsel *evsel, 183 bool use_sample_identifier); 184 185 int perf_evsel__set_filter(struct perf_evsel *evsel, int ncpus, int nthreads, 186 const char *filter); 187 int perf_evsel__enable(struct perf_evsel *evsel, int ncpus, int nthreads); 188 189 int perf_evsel__open_per_cpu(struct perf_evsel *evsel, 190 struct cpu_map *cpus); 191 int perf_evsel__open_per_thread(struct perf_evsel *evsel, 192 struct thread_map *threads); 193 int perf_evsel__open(struct perf_evsel *evsel, struct cpu_map *cpus, 194 struct thread_map *threads); 195 void perf_evsel__close(struct perf_evsel *evsel, int ncpus, int nthreads); 196 197 struct perf_sample; 198 199 void *perf_evsel__rawptr(struct perf_evsel *evsel, struct perf_sample *sample, 200 const char *name); 201 u64 perf_evsel__intval(struct perf_evsel *evsel, struct perf_sample *sample, 202 const char *name); 203 204 static inline char *perf_evsel__strval(struct perf_evsel *evsel, 205 struct perf_sample *sample, 206 const char *name) 207 { 208 return perf_evsel__rawptr(evsel, sample, name); 209 } 210 211 struct format_field; 212 213 struct format_field *perf_evsel__field(struct perf_evsel *evsel, const char *name); 214 215 #define perf_evsel__match(evsel, t, c) \ 216 (evsel->attr.type == PERF_TYPE_##t && \ 217 evsel->attr.config == PERF_COUNT_##c) 218 219 static inline bool perf_evsel__match2(struct perf_evsel *e1, 220 struct perf_evsel *e2) 221 { 222 return (e1->attr.type == e2->attr.type) && 223 (e1->attr.config == e2->attr.config); 224 } 225 226 #define perf_evsel__cmp(a, b) \ 227 ((a) && \ 228 (b) && \ 229 (a)->attr.type == (b)->attr.type && \ 230 (a)->attr.config == (b)->attr.config) 231 232 int perf_evsel__read(struct perf_evsel *evsel, int cpu, int thread, 233 struct perf_counts_values *count); 234 235 int __perf_evsel__read_on_cpu(struct perf_evsel *evsel, 236 int cpu, int thread, bool scale); 237 238 /** 239 * perf_evsel__read_on_cpu - Read out the results on a CPU and thread 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(struct perf_evsel *evsel, 246 int cpu, int thread) 247 { 248 return __perf_evsel__read_on_cpu(evsel, cpu, thread, false); 249 } 250 251 /** 252 * perf_evsel__read_on_cpu_scaled - Read out the results on a CPU and thread, scaled 253 * 254 * @evsel - event selector to read value 255 * @cpu - CPU of interest 256 * @thread - thread of interest 257 */ 258 static inline int perf_evsel__read_on_cpu_scaled(struct perf_evsel *evsel, 259 int cpu, int thread) 260 { 261 return __perf_evsel__read_on_cpu(evsel, cpu, thread, true); 262 } 263 264 int perf_evsel__parse_sample(struct perf_evsel *evsel, union perf_event *event, 265 struct perf_sample *sample); 266 267 static inline struct perf_evsel *perf_evsel__next(struct perf_evsel *evsel) 268 { 269 return list_entry(evsel->node.next, struct perf_evsel, node); 270 } 271 272 static inline struct perf_evsel *perf_evsel__prev(struct perf_evsel *evsel) 273 { 274 return list_entry(evsel->node.prev, struct perf_evsel, node); 275 } 276 277 /** 278 * perf_evsel__is_group_leader - Return whether given evsel is a leader event 279 * 280 * @evsel - evsel selector to be tested 281 * 282 * Return %true if @evsel is a group leader or a stand-alone event 283 */ 284 static inline bool perf_evsel__is_group_leader(const struct perf_evsel *evsel) 285 { 286 return evsel->leader == evsel; 287 } 288 289 /** 290 * perf_evsel__is_group_event - Return whether given evsel is a group event 291 * 292 * @evsel - evsel selector to be tested 293 * 294 * Return %true iff event group view is enabled and @evsel is a actual group 295 * leader which has other members in the group 296 */ 297 static inline bool perf_evsel__is_group_event(struct perf_evsel *evsel) 298 { 299 if (!symbol_conf.event_group) 300 return false; 301 302 return perf_evsel__is_group_leader(evsel) && evsel->nr_members > 1; 303 } 304 305 /** 306 * perf_evsel__is_function_event - Return whether given evsel is a function 307 * trace event 308 * 309 * @evsel - evsel selector to be tested 310 * 311 * Return %true if event is function trace event 312 */ 313 static inline bool perf_evsel__is_function_event(struct perf_evsel *evsel) 314 { 315 #define FUNCTION_EVENT "ftrace:function" 316 317 return evsel->name && 318 !strncmp(FUNCTION_EVENT, evsel->name, sizeof(FUNCTION_EVENT)); 319 320 #undef FUNCTION_EVENT 321 } 322 323 struct perf_attr_details { 324 bool freq; 325 bool verbose; 326 bool event_group; 327 bool force; 328 }; 329 330 int perf_evsel__fprintf(struct perf_evsel *evsel, 331 struct perf_attr_details *details, FILE *fp); 332 333 bool perf_evsel__fallback(struct perf_evsel *evsel, int err, 334 char *msg, size_t msgsize); 335 int perf_evsel__open_strerror(struct perf_evsel *evsel, struct target *target, 336 int err, char *msg, size_t size); 337 338 static inline int perf_evsel__group_idx(struct perf_evsel *evsel) 339 { 340 return evsel->idx - evsel->leader->idx; 341 } 342 343 #define for_each_group_member(_evsel, _leader) \ 344 for ((_evsel) = list_entry((_leader)->node.next, struct perf_evsel, node); \ 345 (_evsel) && (_evsel)->leader == (_leader); \ 346 (_evsel) = list_entry((_evsel)->node.next, struct perf_evsel, node)) 347 348 static inline bool has_branch_callstack(struct perf_evsel *evsel) 349 { 350 return evsel->attr.branch_sample_type & PERF_SAMPLE_BRANCH_CALL_STACK; 351 } 352 353 typedef int (*attr__fprintf_f)(FILE *, const char *, const char *, void *); 354 355 int perf_event_attr__fprintf(FILE *fp, struct perf_event_attr *attr, 356 attr__fprintf_f attr__fprintf, void *priv); 357 358 #endif /* __PERF_EVSEL_H */ 359