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 unsigned int 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 }; 55 56 struct perf_evsel_str_handler { 57 const char *name; 58 void *handler; 59 }; 60 61 struct perf_evlist *perf_evlist__new(void); 62 struct perf_evlist *perf_evlist__new_default(void); 63 void perf_evlist__init(struct perf_evlist *evlist, struct cpu_map *cpus, 64 struct thread_map *threads); 65 void perf_evlist__exit(struct perf_evlist *evlist); 66 void perf_evlist__delete(struct perf_evlist *evlist); 67 68 void perf_evlist__add(struct perf_evlist *evlist, struct perf_evsel *entry); 69 int perf_evlist__add_default(struct perf_evlist *evlist); 70 int __perf_evlist__add_default_attrs(struct perf_evlist *evlist, 71 struct perf_event_attr *attrs, size_t nr_attrs); 72 73 #define perf_evlist__add_default_attrs(evlist, array) \ 74 __perf_evlist__add_default_attrs(evlist, array, ARRAY_SIZE(array)) 75 76 int perf_evlist__add_newtp(struct perf_evlist *evlist, 77 const char *sys, const char *name, void *handler); 78 79 int perf_evlist__set_filter(struct perf_evlist *evlist, const char *filter); 80 81 struct perf_evsel * 82 perf_evlist__find_tracepoint_by_id(struct perf_evlist *evlist, int id); 83 84 struct perf_evsel * 85 perf_evlist__find_tracepoint_by_name(struct perf_evlist *evlist, 86 const char *name); 87 88 void perf_evlist__id_add(struct perf_evlist *evlist, struct perf_evsel *evsel, 89 int cpu, int thread, u64 id); 90 91 int perf_evlist__add_pollfd(struct perf_evlist *evlist, int fd); 92 int perf_evlist__alloc_pollfd(struct perf_evlist *evlist); 93 int perf_evlist__filter_pollfd(struct perf_evlist *evlist, short revents_and_mask); 94 95 int perf_evlist__poll(struct perf_evlist *evlist, int timeout); 96 97 struct perf_evsel *perf_evlist__id2evsel(struct perf_evlist *evlist, u64 id); 98 99 struct perf_sample_id *perf_evlist__id2sid(struct perf_evlist *evlist, u64 id); 100 101 union perf_event *perf_evlist__mmap_read(struct perf_evlist *evlist, int idx); 102 103 void perf_evlist__mmap_consume(struct perf_evlist *evlist, int idx); 104 105 int perf_evlist__open(struct perf_evlist *evlist); 106 void perf_evlist__close(struct perf_evlist *evlist); 107 108 void perf_evlist__set_id_pos(struct perf_evlist *evlist); 109 bool perf_can_sample_identifier(void); 110 void perf_evlist__config(struct perf_evlist *evlist, struct record_opts *opts); 111 int record_opts__config(struct record_opts *opts); 112 113 int perf_evlist__prepare_workload(struct perf_evlist *evlist, 114 struct target *target, 115 const char *argv[], bool pipe_output, 116 void (*exec_error)(int signo, siginfo_t *info, 117 void *ucontext)); 118 int perf_evlist__start_workload(struct perf_evlist *evlist); 119 120 struct option; 121 122 int perf_evlist__parse_mmap_pages(const struct option *opt, 123 const char *str, 124 int unset); 125 126 int perf_evlist__mmap(struct perf_evlist *evlist, unsigned int pages, 127 bool overwrite); 128 void perf_evlist__munmap(struct perf_evlist *evlist); 129 130 void perf_evlist__disable(struct perf_evlist *evlist); 131 void perf_evlist__enable(struct perf_evlist *evlist); 132 133 int perf_evlist__disable_event(struct perf_evlist *evlist, 134 struct perf_evsel *evsel); 135 int perf_evlist__enable_event(struct perf_evlist *evlist, 136 struct perf_evsel *evsel); 137 int perf_evlist__enable_event_idx(struct perf_evlist *evlist, 138 struct perf_evsel *evsel, int idx); 139 140 void perf_evlist__set_selected(struct perf_evlist *evlist, 141 struct perf_evsel *evsel); 142 143 static inline void perf_evlist__set_maps(struct perf_evlist *evlist, 144 struct cpu_map *cpus, 145 struct thread_map *threads) 146 { 147 evlist->cpus = cpus; 148 evlist->threads = threads; 149 } 150 151 int perf_evlist__create_maps(struct perf_evlist *evlist, struct target *target); 152 int perf_evlist__apply_filters(struct perf_evlist *evlist); 153 154 void __perf_evlist__set_leader(struct list_head *list); 155 void perf_evlist__set_leader(struct perf_evlist *evlist); 156 157 u64 perf_evlist__read_format(struct perf_evlist *evlist); 158 u64 __perf_evlist__combined_sample_type(struct perf_evlist *evlist); 159 u64 perf_evlist__combined_sample_type(struct perf_evlist *evlist); 160 bool perf_evlist__sample_id_all(struct perf_evlist *evlist); 161 u16 perf_evlist__id_hdr_size(struct perf_evlist *evlist); 162 163 int perf_evlist__parse_sample(struct perf_evlist *evlist, union perf_event *event, 164 struct perf_sample *sample); 165 166 bool perf_evlist__valid_sample_type(struct perf_evlist *evlist); 167 bool perf_evlist__valid_sample_id_all(struct perf_evlist *evlist); 168 bool perf_evlist__valid_read_format(struct perf_evlist *evlist); 169 170 void perf_evlist__splice_list_tail(struct perf_evlist *evlist, 171 struct list_head *list, 172 int nr_entries); 173 174 static inline struct perf_evsel *perf_evlist__first(struct perf_evlist *evlist) 175 { 176 return list_entry(evlist->entries.next, struct perf_evsel, node); 177 } 178 179 static inline struct perf_evsel *perf_evlist__last(struct perf_evlist *evlist) 180 { 181 return list_entry(evlist->entries.prev, struct perf_evsel, node); 182 } 183 184 size_t perf_evlist__fprintf(struct perf_evlist *evlist, FILE *fp); 185 186 int perf_evlist__strerror_open(struct perf_evlist *evlist, int err, char *buf, size_t size); 187 int perf_evlist__strerror_mmap(struct perf_evlist *evlist, int err, char *buf, size_t size); 188 189 static inline unsigned int perf_mmap__read_head(struct perf_mmap *mm) 190 { 191 struct perf_event_mmap_page *pc = mm->base; 192 int head = ACCESS_ONCE(pc->data_head); 193 rmb(); 194 return head; 195 } 196 197 static inline void perf_mmap__write_tail(struct perf_mmap *md, 198 unsigned long tail) 199 { 200 struct perf_event_mmap_page *pc = md->base; 201 202 /* 203 * ensure all reads are done before we write the tail out. 204 */ 205 mb(); 206 pc->data_tail = tail; 207 } 208 209 bool perf_evlist__can_select_event(struct perf_evlist *evlist, const char *str); 210 void perf_evlist__to_front(struct perf_evlist *evlist, 211 struct perf_evsel *move_evsel); 212 213 /** 214 * __evlist__for_each - iterate thru all the evsels 215 * @list: list_head instance to iterate 216 * @evsel: struct evsel iterator 217 */ 218 #define __evlist__for_each(list, evsel) \ 219 list_for_each_entry(evsel, list, node) 220 221 /** 222 * evlist__for_each - iterate thru all the evsels 223 * @evlist: evlist instance to iterate 224 * @evsel: struct evsel iterator 225 */ 226 #define evlist__for_each(evlist, evsel) \ 227 __evlist__for_each(&(evlist)->entries, evsel) 228 229 /** 230 * __evlist__for_each_continue - continue iteration thru all the evsels 231 * @list: list_head instance to iterate 232 * @evsel: struct evsel iterator 233 */ 234 #define __evlist__for_each_continue(list, evsel) \ 235 list_for_each_entry_continue(evsel, list, node) 236 237 /** 238 * evlist__for_each_continue - continue iteration thru all the evsels 239 * @evlist: evlist instance to iterate 240 * @evsel: struct evsel iterator 241 */ 242 #define evlist__for_each_continue(evlist, evsel) \ 243 __evlist__for_each_continue(&(evlist)->entries, evsel) 244 245 /** 246 * __evlist__for_each_reverse - iterate thru all the evsels in reverse order 247 * @list: list_head instance to iterate 248 * @evsel: struct evsel iterator 249 */ 250 #define __evlist__for_each_reverse(list, evsel) \ 251 list_for_each_entry_reverse(evsel, list, node) 252 253 /** 254 * evlist__for_each_reverse - iterate thru all the evsels in reverse order 255 * @evlist: evlist instance to iterate 256 * @evsel: struct evsel iterator 257 */ 258 #define evlist__for_each_reverse(evlist, evsel) \ 259 __evlist__for_each_reverse(&(evlist)->entries, evsel) 260 261 /** 262 * __evlist__for_each_safe - safely iterate thru all the evsels 263 * @list: list_head instance to iterate 264 * @tmp: struct evsel temp iterator 265 * @evsel: struct evsel iterator 266 */ 267 #define __evlist__for_each_safe(list, tmp, evsel) \ 268 list_for_each_entry_safe(evsel, tmp, list, node) 269 270 /** 271 * evlist__for_each_safe - safely iterate thru all the evsels 272 * @evlist: evlist instance to iterate 273 * @evsel: struct evsel iterator 274 * @tmp: struct evsel temp iterator 275 */ 276 #define evlist__for_each_safe(evlist, tmp, evsel) \ 277 __evlist__for_each_safe(&(evlist)->entries, tmp, evsel) 278 279 void perf_evlist__set_tracking_event(struct perf_evlist *evlist, 280 struct perf_evsel *tracking_evsel); 281 282 #endif /* __PERF_EVLIST_H */ 283