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