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