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 struct perf_evlist *perf_evlist__new_dummy(void); 71 void perf_evlist__init(struct perf_evlist *evlist, struct cpu_map *cpus, 72 struct thread_map *threads); 73 void perf_evlist__exit(struct perf_evlist *evlist); 74 void perf_evlist__delete(struct perf_evlist *evlist); 75 76 void perf_evlist__add(struct perf_evlist *evlist, struct perf_evsel *entry); 77 void perf_evlist__remove(struct perf_evlist *evlist, struct perf_evsel *evsel); 78 int perf_evlist__add_default(struct perf_evlist *evlist); 79 int __perf_evlist__add_default_attrs(struct perf_evlist *evlist, 80 struct perf_event_attr *attrs, size_t nr_attrs); 81 82 #define perf_evlist__add_default_attrs(evlist, array) \ 83 __perf_evlist__add_default_attrs(evlist, array, ARRAY_SIZE(array)) 84 85 int perf_evlist__add_dummy(struct perf_evlist *evlist); 86 87 int perf_evlist__add_newtp(struct perf_evlist *evlist, 88 const char *sys, const char *name, void *handler); 89 90 int perf_evlist__set_filter(struct perf_evlist *evlist, const char *filter); 91 int perf_evlist__set_filter_pid(struct perf_evlist *evlist, pid_t pid); 92 int perf_evlist__set_filter_pids(struct perf_evlist *evlist, size_t npids, pid_t *pids); 93 94 struct perf_evsel * 95 perf_evlist__find_tracepoint_by_id(struct perf_evlist *evlist, int id); 96 97 struct perf_evsel * 98 perf_evlist__find_tracepoint_by_name(struct perf_evlist *evlist, 99 const char *name); 100 101 void perf_evlist__id_add(struct perf_evlist *evlist, struct perf_evsel *evsel, 102 int cpu, int thread, u64 id); 103 int perf_evlist__id_add_fd(struct perf_evlist *evlist, 104 struct perf_evsel *evsel, 105 int cpu, int thread, int fd); 106 107 int perf_evlist__add_pollfd(struct perf_evlist *evlist, int fd); 108 int perf_evlist__alloc_pollfd(struct perf_evlist *evlist); 109 int perf_evlist__filter_pollfd(struct perf_evlist *evlist, short revents_and_mask); 110 111 int perf_evlist__poll(struct perf_evlist *evlist, int timeout); 112 113 struct perf_evsel *perf_evlist__id2evsel(struct perf_evlist *evlist, u64 id); 114 struct perf_evsel *perf_evlist__id2evsel_strict(struct perf_evlist *evlist, 115 u64 id); 116 117 struct perf_sample_id *perf_evlist__id2sid(struct perf_evlist *evlist, u64 id); 118 119 union perf_event *perf_evlist__mmap_read(struct perf_evlist *evlist, int idx); 120 121 void perf_evlist__mmap_consume(struct perf_evlist *evlist, int idx); 122 123 int perf_evlist__open(struct perf_evlist *evlist); 124 void perf_evlist__close(struct perf_evlist *evlist); 125 126 void perf_evlist__set_id_pos(struct perf_evlist *evlist); 127 bool perf_can_sample_identifier(void); 128 bool perf_can_record_switch_events(void); 129 bool perf_can_record_cpu_wide(void); 130 void perf_evlist__config(struct perf_evlist *evlist, struct record_opts *opts); 131 int record_opts__config(struct record_opts *opts); 132 133 int perf_evlist__prepare_workload(struct perf_evlist *evlist, 134 struct target *target, 135 const char *argv[], bool pipe_output, 136 void (*exec_error)(int signo, siginfo_t *info, 137 void *ucontext)); 138 int perf_evlist__start_workload(struct perf_evlist *evlist); 139 140 struct option; 141 142 int __perf_evlist__parse_mmap_pages(unsigned int *mmap_pages, const char *str); 143 int perf_evlist__parse_mmap_pages(const struct option *opt, 144 const char *str, 145 int unset); 146 147 int perf_evlist__mmap_ex(struct perf_evlist *evlist, unsigned int pages, 148 bool overwrite, unsigned int auxtrace_pages, 149 bool auxtrace_overwrite); 150 int perf_evlist__mmap(struct perf_evlist *evlist, unsigned int pages, 151 bool overwrite); 152 void perf_evlist__munmap(struct perf_evlist *evlist); 153 154 void perf_evlist__disable(struct perf_evlist *evlist); 155 void perf_evlist__enable(struct perf_evlist *evlist); 156 void perf_evlist__toggle_enable(struct perf_evlist *evlist); 157 158 int perf_evlist__disable_event(struct perf_evlist *evlist, 159 struct perf_evsel *evsel); 160 int perf_evlist__enable_event(struct perf_evlist *evlist, 161 struct perf_evsel *evsel); 162 int perf_evlist__enable_event_idx(struct perf_evlist *evlist, 163 struct perf_evsel *evsel, int idx); 164 165 void perf_evlist__set_selected(struct perf_evlist *evlist, 166 struct perf_evsel *evsel); 167 168 void perf_evlist__set_maps(struct perf_evlist *evlist, struct cpu_map *cpus, 169 struct thread_map *threads); 170 int perf_evlist__create_maps(struct perf_evlist *evlist, struct target *target); 171 int perf_evlist__apply_filters(struct perf_evlist *evlist, struct perf_evsel **err_evsel); 172 173 void __perf_evlist__set_leader(struct list_head *list); 174 void perf_evlist__set_leader(struct perf_evlist *evlist); 175 176 u64 perf_evlist__read_format(struct perf_evlist *evlist); 177 u64 __perf_evlist__combined_sample_type(struct perf_evlist *evlist); 178 u64 perf_evlist__combined_sample_type(struct perf_evlist *evlist); 179 u64 perf_evlist__combined_branch_type(struct perf_evlist *evlist); 180 bool perf_evlist__sample_id_all(struct perf_evlist *evlist); 181 u16 perf_evlist__id_hdr_size(struct perf_evlist *evlist); 182 183 int perf_evlist__parse_sample(struct perf_evlist *evlist, union perf_event *event, 184 struct perf_sample *sample); 185 186 bool perf_evlist__valid_sample_type(struct perf_evlist *evlist); 187 bool perf_evlist__valid_sample_id_all(struct perf_evlist *evlist); 188 bool perf_evlist__valid_read_format(struct perf_evlist *evlist); 189 190 void perf_evlist__splice_list_tail(struct perf_evlist *evlist, 191 struct list_head *list); 192 193 static inline struct perf_evsel *perf_evlist__first(struct perf_evlist *evlist) 194 { 195 return list_entry(evlist->entries.next, struct perf_evsel, node); 196 } 197 198 static inline struct perf_evsel *perf_evlist__last(struct perf_evlist *evlist) 199 { 200 return list_entry(evlist->entries.prev, struct perf_evsel, node); 201 } 202 203 size_t perf_evlist__fprintf(struct perf_evlist *evlist, FILE *fp); 204 205 int perf_evlist__strerror_open(struct perf_evlist *evlist, int err, char *buf, size_t size); 206 int perf_evlist__strerror_mmap(struct perf_evlist *evlist, int err, char *buf, size_t size); 207 208 static inline u64 perf_mmap__read_head(struct perf_mmap *mm) 209 { 210 struct perf_event_mmap_page *pc = mm->base; 211 u64 head = ACCESS_ONCE(pc->data_head); 212 rmb(); 213 return head; 214 } 215 216 static inline void perf_mmap__write_tail(struct perf_mmap *md, u64 tail) 217 { 218 struct perf_event_mmap_page *pc = md->base; 219 220 /* 221 * ensure all reads are done before we write the tail out. 222 */ 223 mb(); 224 pc->data_tail = tail; 225 } 226 227 bool perf_evlist__can_select_event(struct perf_evlist *evlist, const char *str); 228 void perf_evlist__to_front(struct perf_evlist *evlist, 229 struct perf_evsel *move_evsel); 230 231 /** 232 * __evlist__for_each - iterate thru all the evsels 233 * @list: list_head instance to iterate 234 * @evsel: struct evsel iterator 235 */ 236 #define __evlist__for_each(list, evsel) \ 237 list_for_each_entry(evsel, list, node) 238 239 /** 240 * evlist__for_each - iterate thru all the evsels 241 * @evlist: evlist instance to iterate 242 * @evsel: struct evsel iterator 243 */ 244 #define evlist__for_each(evlist, evsel) \ 245 __evlist__for_each(&(evlist)->entries, evsel) 246 247 /** 248 * __evlist__for_each_continue - continue iteration thru all the evsels 249 * @list: list_head instance to iterate 250 * @evsel: struct evsel iterator 251 */ 252 #define __evlist__for_each_continue(list, evsel) \ 253 list_for_each_entry_continue(evsel, list, node) 254 255 /** 256 * evlist__for_each_continue - continue iteration thru all the evsels 257 * @evlist: evlist instance to iterate 258 * @evsel: struct evsel iterator 259 */ 260 #define evlist__for_each_continue(evlist, evsel) \ 261 __evlist__for_each_continue(&(evlist)->entries, evsel) 262 263 /** 264 * __evlist__for_each_reverse - iterate thru all the evsels in reverse order 265 * @list: list_head instance to iterate 266 * @evsel: struct evsel iterator 267 */ 268 #define __evlist__for_each_reverse(list, evsel) \ 269 list_for_each_entry_reverse(evsel, list, node) 270 271 /** 272 * evlist__for_each_reverse - iterate thru all the evsels in reverse order 273 * @evlist: evlist instance to iterate 274 * @evsel: struct evsel iterator 275 */ 276 #define evlist__for_each_reverse(evlist, evsel) \ 277 __evlist__for_each_reverse(&(evlist)->entries, evsel) 278 279 /** 280 * __evlist__for_each_safe - safely iterate thru all the evsels 281 * @list: list_head instance to iterate 282 * @tmp: struct evsel temp iterator 283 * @evsel: struct evsel iterator 284 */ 285 #define __evlist__for_each_safe(list, tmp, evsel) \ 286 list_for_each_entry_safe(evsel, tmp, list, node) 287 288 /** 289 * evlist__for_each_safe - safely iterate thru all the evsels 290 * @evlist: evlist instance to iterate 291 * @evsel: struct evsel iterator 292 * @tmp: struct evsel temp iterator 293 */ 294 #define evlist__for_each_safe(evlist, tmp, evsel) \ 295 __evlist__for_each_safe(&(evlist)->entries, tmp, evsel) 296 297 void perf_evlist__set_tracking_event(struct perf_evlist *evlist, 298 struct perf_evsel *tracking_evsel); 299 300 void perf_event_attr__set_max_precise_ip(struct perf_event_attr *attr); 301 #endif /* __PERF_EVLIST_H */ 302