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