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