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