1 #ifndef __PERF_EVLIST_H 2 #define __PERF_EVLIST_H 1 3 4 #include <linux/atomic.h> 5 #include <linux/list.h> 6 #include <api/fd/array.h> 7 #include <stdio.h> 8 #include "../perf.h" 9 #include "event.h" 10 #include "evsel.h" 11 #include "util.h" 12 #include "auxtrace.h" 13 #include <unistd.h> 14 15 struct pollfd; 16 struct thread_map; 17 struct cpu_map; 18 struct record_opts; 19 20 #define PERF_EVLIST__HLIST_BITS 8 21 #define PERF_EVLIST__HLIST_SIZE (1 << PERF_EVLIST__HLIST_BITS) 22 23 /** 24 * struct perf_mmap - perf's ring buffer mmap details 25 * 26 * @refcnt - e.g. code using PERF_EVENT_IOC_SET_OUTPUT to share this 27 */ 28 struct perf_mmap { 29 void *base; 30 int mask; 31 int fd; 32 atomic_t refcnt; 33 u64 prev; 34 struct auxtrace_mmap auxtrace_mmap; 35 char event_copy[PERF_SAMPLE_MAX_SIZE] __attribute__((aligned(8))); 36 }; 37 38 struct perf_evlist { 39 struct list_head entries; 40 struct hlist_head heads[PERF_EVLIST__HLIST_SIZE]; 41 int nr_entries; 42 int nr_groups; 43 int nr_mmaps; 44 bool overwrite; 45 bool enabled; 46 bool has_user_cpus; 47 bool backward; 48 size_t mmap_len; 49 int id_pos; 50 int is_pos; 51 u64 combined_sample_type; 52 struct { 53 int cork_fd; 54 pid_t pid; 55 } workload; 56 struct fdarray pollfd; 57 struct perf_mmap *mmap; 58 struct thread_map *threads; 59 struct cpu_map *cpus; 60 struct perf_evsel *selected; 61 struct events_stats stats; 62 struct perf_env *env; 63 }; 64 65 struct perf_evsel_str_handler { 66 const char *name; 67 void *handler; 68 }; 69 70 struct perf_evlist *perf_evlist__new(void); 71 struct perf_evlist *perf_evlist__new_default(void); 72 struct perf_evlist *perf_evlist__new_dummy(void); 73 void perf_evlist__init(struct perf_evlist *evlist, struct cpu_map *cpus, 74 struct thread_map *threads); 75 void perf_evlist__exit(struct perf_evlist *evlist); 76 void perf_evlist__delete(struct perf_evlist *evlist); 77 78 void perf_evlist__add(struct perf_evlist *evlist, struct perf_evsel *entry); 79 void perf_evlist__remove(struct perf_evlist *evlist, struct perf_evsel *evsel); 80 int perf_evlist__add_default(struct perf_evlist *evlist); 81 int __perf_evlist__add_default_attrs(struct perf_evlist *evlist, 82 struct perf_event_attr *attrs, size_t nr_attrs); 83 84 #define perf_evlist__add_default_attrs(evlist, array) \ 85 __perf_evlist__add_default_attrs(evlist, array, ARRAY_SIZE(array)) 86 87 int perf_evlist__add_dummy(struct perf_evlist *evlist); 88 89 int perf_evlist__add_newtp(struct perf_evlist *evlist, 90 const char *sys, const char *name, void *handler); 91 92 void __perf_evlist__set_sample_bit(struct perf_evlist *evlist, 93 enum perf_event_sample_format bit); 94 void __perf_evlist__reset_sample_bit(struct perf_evlist *evlist, 95 enum perf_event_sample_format bit); 96 97 #define perf_evlist__set_sample_bit(evlist, bit) \ 98 __perf_evlist__set_sample_bit(evlist, PERF_SAMPLE_##bit) 99 100 #define perf_evlist__reset_sample_bit(evlist, bit) \ 101 __perf_evlist__reset_sample_bit(evlist, PERF_SAMPLE_##bit) 102 103 int perf_evlist__set_filter(struct perf_evlist *evlist, const char *filter); 104 int perf_evlist__set_filter_pid(struct perf_evlist *evlist, pid_t pid); 105 int perf_evlist__set_filter_pids(struct perf_evlist *evlist, size_t npids, pid_t *pids); 106 107 struct perf_evsel * 108 perf_evlist__find_tracepoint_by_id(struct perf_evlist *evlist, int id); 109 110 struct perf_evsel * 111 perf_evlist__find_tracepoint_by_name(struct perf_evlist *evlist, 112 const char *name); 113 114 void perf_evlist__id_add(struct perf_evlist *evlist, struct perf_evsel *evsel, 115 int cpu, int thread, u64 id); 116 int perf_evlist__id_add_fd(struct perf_evlist *evlist, 117 struct perf_evsel *evsel, 118 int cpu, int thread, int fd); 119 120 int perf_evlist__add_pollfd(struct perf_evlist *evlist, int fd); 121 int perf_evlist__alloc_pollfd(struct perf_evlist *evlist); 122 int perf_evlist__filter_pollfd(struct perf_evlist *evlist, short revents_and_mask); 123 124 int perf_evlist__poll(struct perf_evlist *evlist, int timeout); 125 126 struct perf_evsel *perf_evlist__id2evsel(struct perf_evlist *evlist, u64 id); 127 struct perf_evsel *perf_evlist__id2evsel_strict(struct perf_evlist *evlist, 128 u64 id); 129 130 struct perf_sample_id *perf_evlist__id2sid(struct perf_evlist *evlist, u64 id); 131 132 union perf_event *perf_evlist__mmap_read(struct perf_evlist *evlist, int idx); 133 134 union perf_event *perf_evlist__mmap_read_backward(struct perf_evlist *evlist, 135 int idx); 136 void perf_evlist__mmap_read_catchup(struct perf_evlist *evlist, int idx); 137 138 void perf_evlist__mmap_consume(struct perf_evlist *evlist, int idx); 139 140 int perf_evlist__pause(struct perf_evlist *evlist); 141 int perf_evlist__resume(struct perf_evlist *evlist); 142 int perf_evlist__open(struct perf_evlist *evlist); 143 void perf_evlist__close(struct perf_evlist *evlist); 144 145 struct callchain_param; 146 147 void perf_evlist__set_id_pos(struct perf_evlist *evlist); 148 bool perf_can_sample_identifier(void); 149 bool perf_can_record_switch_events(void); 150 bool perf_can_record_cpu_wide(void); 151 void perf_evlist__config(struct perf_evlist *evlist, struct record_opts *opts, 152 struct callchain_param *callchain); 153 int record_opts__config(struct record_opts *opts); 154 155 int perf_evlist__prepare_workload(struct perf_evlist *evlist, 156 struct target *target, 157 const char *argv[], bool pipe_output, 158 void (*exec_error)(int signo, siginfo_t *info, 159 void *ucontext)); 160 int perf_evlist__start_workload(struct perf_evlist *evlist); 161 162 struct option; 163 164 int __perf_evlist__parse_mmap_pages(unsigned int *mmap_pages, const char *str); 165 int perf_evlist__parse_mmap_pages(const struct option *opt, 166 const char *str, 167 int unset); 168 169 unsigned long perf_event_mlock_kb_in_pages(void); 170 171 int perf_evlist__mmap_ex(struct perf_evlist *evlist, unsigned int pages, 172 bool overwrite, unsigned int auxtrace_pages, 173 bool auxtrace_overwrite); 174 int perf_evlist__mmap(struct perf_evlist *evlist, unsigned int pages, 175 bool overwrite); 176 void perf_evlist__munmap(struct perf_evlist *evlist); 177 178 void perf_evlist__disable(struct perf_evlist *evlist); 179 void perf_evlist__enable(struct perf_evlist *evlist); 180 void perf_evlist__toggle_enable(struct perf_evlist *evlist); 181 182 int perf_evlist__enable_event_idx(struct perf_evlist *evlist, 183 struct perf_evsel *evsel, int idx); 184 185 void perf_evlist__set_selected(struct perf_evlist *evlist, 186 struct perf_evsel *evsel); 187 188 void perf_evlist__set_maps(struct perf_evlist *evlist, struct cpu_map *cpus, 189 struct thread_map *threads); 190 int perf_evlist__create_maps(struct perf_evlist *evlist, struct target *target); 191 int perf_evlist__apply_filters(struct perf_evlist *evlist, struct perf_evsel **err_evsel); 192 193 void __perf_evlist__set_leader(struct list_head *list); 194 void perf_evlist__set_leader(struct perf_evlist *evlist); 195 196 u64 perf_evlist__read_format(struct perf_evlist *evlist); 197 u64 __perf_evlist__combined_sample_type(struct perf_evlist *evlist); 198 u64 perf_evlist__combined_sample_type(struct perf_evlist *evlist); 199 u64 perf_evlist__combined_branch_type(struct perf_evlist *evlist); 200 bool perf_evlist__sample_id_all(struct perf_evlist *evlist); 201 u16 perf_evlist__id_hdr_size(struct perf_evlist *evlist); 202 203 int perf_evlist__parse_sample(struct perf_evlist *evlist, union perf_event *event, 204 struct perf_sample *sample); 205 206 bool perf_evlist__valid_sample_type(struct perf_evlist *evlist); 207 bool perf_evlist__valid_sample_id_all(struct perf_evlist *evlist); 208 bool perf_evlist__valid_read_format(struct perf_evlist *evlist); 209 210 void perf_evlist__splice_list_tail(struct perf_evlist *evlist, 211 struct list_head *list); 212 213 static inline struct perf_evsel *perf_evlist__first(struct perf_evlist *evlist) 214 { 215 return list_entry(evlist->entries.next, struct perf_evsel, node); 216 } 217 218 static inline struct perf_evsel *perf_evlist__last(struct perf_evlist *evlist) 219 { 220 return list_entry(evlist->entries.prev, struct perf_evsel, node); 221 } 222 223 size_t perf_evlist__fprintf(struct perf_evlist *evlist, FILE *fp); 224 225 int perf_evlist__strerror_open(struct perf_evlist *evlist, int err, char *buf, size_t size); 226 int perf_evlist__strerror_mmap(struct perf_evlist *evlist, int err, char *buf, size_t size); 227 228 static inline u64 perf_mmap__read_head(struct perf_mmap *mm) 229 { 230 struct perf_event_mmap_page *pc = mm->base; 231 u64 head = ACCESS_ONCE(pc->data_head); 232 rmb(); 233 return head; 234 } 235 236 static inline void perf_mmap__write_tail(struct perf_mmap *md, u64 tail) 237 { 238 struct perf_event_mmap_page *pc = md->base; 239 240 /* 241 * ensure all reads are done before we write the tail out. 242 */ 243 mb(); 244 pc->data_tail = tail; 245 } 246 247 bool perf_evlist__can_select_event(struct perf_evlist *evlist, const char *str); 248 void perf_evlist__to_front(struct perf_evlist *evlist, 249 struct perf_evsel *move_evsel); 250 251 /** 252 * __evlist__for_each - iterate thru all the evsels 253 * @list: list_head instance to iterate 254 * @evsel: struct evsel iterator 255 */ 256 #define __evlist__for_each(list, evsel) \ 257 list_for_each_entry(evsel, list, node) 258 259 /** 260 * evlist__for_each - iterate thru all the evsels 261 * @evlist: evlist instance to iterate 262 * @evsel: struct evsel iterator 263 */ 264 #define evlist__for_each(evlist, evsel) \ 265 __evlist__for_each(&(evlist)->entries, evsel) 266 267 /** 268 * __evlist__for_each_continue - continue iteration thru all the evsels 269 * @list: list_head instance to iterate 270 * @evsel: struct evsel iterator 271 */ 272 #define __evlist__for_each_continue(list, evsel) \ 273 list_for_each_entry_continue(evsel, list, node) 274 275 /** 276 * evlist__for_each_continue - continue iteration thru all the evsels 277 * @evlist: evlist instance to iterate 278 * @evsel: struct evsel iterator 279 */ 280 #define evlist__for_each_continue(evlist, evsel) \ 281 __evlist__for_each_continue(&(evlist)->entries, evsel) 282 283 /** 284 * __evlist__for_each_reverse - iterate thru all the evsels in reverse order 285 * @list: list_head instance to iterate 286 * @evsel: struct evsel iterator 287 */ 288 #define __evlist__for_each_reverse(list, evsel) \ 289 list_for_each_entry_reverse(evsel, list, node) 290 291 /** 292 * evlist__for_each_reverse - iterate thru all the evsels in reverse order 293 * @evlist: evlist instance to iterate 294 * @evsel: struct evsel iterator 295 */ 296 #define evlist__for_each_reverse(evlist, evsel) \ 297 __evlist__for_each_reverse(&(evlist)->entries, evsel) 298 299 /** 300 * __evlist__for_each_safe - safely iterate thru all the evsels 301 * @list: list_head instance to iterate 302 * @tmp: struct evsel temp iterator 303 * @evsel: struct evsel iterator 304 */ 305 #define __evlist__for_each_safe(list, tmp, evsel) \ 306 list_for_each_entry_safe(evsel, tmp, list, node) 307 308 /** 309 * evlist__for_each_safe - safely iterate thru all the evsels 310 * @evlist: evlist instance to iterate 311 * @evsel: struct evsel iterator 312 * @tmp: struct evsel temp iterator 313 */ 314 #define evlist__for_each_safe(evlist, tmp, evsel) \ 315 __evlist__for_each_safe(&(evlist)->entries, tmp, evsel) 316 317 void perf_evlist__set_tracking_event(struct perf_evlist *evlist, 318 struct perf_evsel *tracking_evsel); 319 320 void perf_event_attr__set_max_precise_ip(struct perf_event_attr *attr); 321 322 struct perf_evsel * 323 perf_evlist__find_evsel_by_str(struct perf_evlist *evlist, const char *str); 324 #endif /* __PERF_EVLIST_H */ 325