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