1 #ifndef __PERF_EVLIST_H 2 #define __PERF_EVLIST_H 1 3 4 #include <linux/list.h> 5 #include <stdio.h> 6 #include "../perf.h" 7 #include "event.h" 8 #include "evsel.h" 9 #include "util.h" 10 #include <unistd.h> 11 12 struct pollfd; 13 struct thread_map; 14 struct cpu_map; 15 struct perf_record_opts; 16 17 #define PERF_EVLIST__HLIST_BITS 8 18 #define PERF_EVLIST__HLIST_SIZE (1 << PERF_EVLIST__HLIST_BITS) 19 20 struct perf_mmap { 21 void *base; 22 int mask; 23 unsigned int prev; 24 char event_copy[PERF_SAMPLE_MAX_SIZE]; 25 }; 26 27 struct perf_evlist { 28 struct list_head entries; 29 struct hlist_head heads[PERF_EVLIST__HLIST_SIZE]; 30 int nr_entries; 31 int nr_groups; 32 int nr_fds; 33 int nr_mmaps; 34 size_t mmap_len; 35 int id_pos; 36 int is_pos; 37 u64 combined_sample_type; 38 struct { 39 int cork_fd; 40 pid_t pid; 41 } workload; 42 bool overwrite; 43 struct perf_mmap *mmap; 44 struct pollfd *pollfd; 45 struct thread_map *threads; 46 struct cpu_map *cpus; 47 struct perf_evsel *selected; 48 }; 49 50 struct perf_evsel_str_handler { 51 const char *name; 52 void *handler; 53 }; 54 55 struct perf_evlist *perf_evlist__new(void); 56 struct perf_evlist *perf_evlist__new_default(void); 57 void perf_evlist__init(struct perf_evlist *evlist, struct cpu_map *cpus, 58 struct thread_map *threads); 59 void perf_evlist__exit(struct perf_evlist *evlist); 60 void perf_evlist__delete(struct perf_evlist *evlist); 61 62 void perf_evlist__add(struct perf_evlist *evlist, struct perf_evsel *entry); 63 int perf_evlist__add_default(struct perf_evlist *evlist); 64 int __perf_evlist__add_default_attrs(struct perf_evlist *evlist, 65 struct perf_event_attr *attrs, size_t nr_attrs); 66 67 #define perf_evlist__add_default_attrs(evlist, array) \ 68 __perf_evlist__add_default_attrs(evlist, array, ARRAY_SIZE(array)) 69 70 int perf_evlist__add_newtp(struct perf_evlist *evlist, 71 const char *sys, const char *name, void *handler); 72 73 int perf_evlist__set_filter(struct perf_evlist *evlist, const char *filter); 74 75 struct perf_evsel * 76 perf_evlist__find_tracepoint_by_id(struct perf_evlist *evlist, int id); 77 78 struct perf_evsel * 79 perf_evlist__find_tracepoint_by_name(struct perf_evlist *evlist, 80 const char *name); 81 82 void perf_evlist__id_add(struct perf_evlist *evlist, struct perf_evsel *evsel, 83 int cpu, int thread, u64 id); 84 85 void perf_evlist__add_pollfd(struct perf_evlist *evlist, int fd); 86 87 struct perf_evsel *perf_evlist__id2evsel(struct perf_evlist *evlist, u64 id); 88 89 struct perf_sample_id *perf_evlist__id2sid(struct perf_evlist *evlist, u64 id); 90 91 union perf_event *perf_evlist__mmap_read(struct perf_evlist *evlist, int idx); 92 93 void perf_evlist__mmap_consume(struct perf_evlist *evlist, int idx); 94 95 int perf_evlist__open(struct perf_evlist *evlist); 96 void perf_evlist__close(struct perf_evlist *evlist); 97 98 void perf_evlist__set_id_pos(struct perf_evlist *evlist); 99 bool perf_can_sample_identifier(void); 100 void perf_evlist__config(struct perf_evlist *evlist, 101 struct perf_record_opts *opts); 102 int perf_record_opts__config(struct perf_record_opts *opts); 103 104 int perf_evlist__prepare_workload(struct perf_evlist *evlist, 105 struct perf_target *target, 106 const char *argv[], bool pipe_output, 107 bool want_signal); 108 int perf_evlist__start_workload(struct perf_evlist *evlist); 109 110 int perf_evlist__parse_mmap_pages(const struct option *opt, 111 const char *str, 112 int unset); 113 114 int perf_evlist__mmap(struct perf_evlist *evlist, unsigned int pages, 115 bool overwrite); 116 void perf_evlist__munmap(struct perf_evlist *evlist); 117 118 void perf_evlist__disable(struct perf_evlist *evlist); 119 void perf_evlist__enable(struct perf_evlist *evlist); 120 121 int perf_evlist__disable_event(struct perf_evlist *evlist, 122 struct perf_evsel *evsel); 123 int perf_evlist__enable_event(struct perf_evlist *evlist, 124 struct perf_evsel *evsel); 125 126 void perf_evlist__set_selected(struct perf_evlist *evlist, 127 struct perf_evsel *evsel); 128 129 static inline void perf_evlist__set_maps(struct perf_evlist *evlist, 130 struct cpu_map *cpus, 131 struct thread_map *threads) 132 { 133 evlist->cpus = cpus; 134 evlist->threads = threads; 135 } 136 137 int perf_evlist__create_maps(struct perf_evlist *evlist, 138 struct perf_target *target); 139 void perf_evlist__delete_maps(struct perf_evlist *evlist); 140 int perf_evlist__apply_filters(struct perf_evlist *evlist); 141 142 void __perf_evlist__set_leader(struct list_head *list); 143 void perf_evlist__set_leader(struct perf_evlist *evlist); 144 145 u64 perf_evlist__read_format(struct perf_evlist *evlist); 146 u64 __perf_evlist__combined_sample_type(struct perf_evlist *evlist); 147 u64 perf_evlist__combined_sample_type(struct perf_evlist *evlist); 148 bool perf_evlist__sample_id_all(struct perf_evlist *evlist); 149 u16 perf_evlist__id_hdr_size(struct perf_evlist *evlist); 150 151 int perf_evlist__parse_sample(struct perf_evlist *evlist, union perf_event *event, 152 struct perf_sample *sample); 153 154 bool perf_evlist__valid_sample_type(struct perf_evlist *evlist); 155 bool perf_evlist__valid_sample_id_all(struct perf_evlist *evlist); 156 bool perf_evlist__valid_read_format(struct perf_evlist *evlist); 157 158 void perf_evlist__splice_list_tail(struct perf_evlist *evlist, 159 struct list_head *list, 160 int nr_entries); 161 162 static inline struct perf_evsel *perf_evlist__first(struct perf_evlist *evlist) 163 { 164 return list_entry(evlist->entries.next, struct perf_evsel, node); 165 } 166 167 static inline struct perf_evsel *perf_evlist__last(struct perf_evlist *evlist) 168 { 169 return list_entry(evlist->entries.prev, struct perf_evsel, node); 170 } 171 172 size_t perf_evlist__fprintf(struct perf_evlist *evlist, FILE *fp); 173 174 int perf_evlist__strerror_tp(struct perf_evlist *evlist, int err, char *buf, size_t size); 175 int perf_evlist__strerror_open(struct perf_evlist *evlist, int err, char *buf, size_t size); 176 177 static inline unsigned int perf_mmap__read_head(struct perf_mmap *mm) 178 { 179 struct perf_event_mmap_page *pc = mm->base; 180 int head = ACCESS_ONCE(pc->data_head); 181 rmb(); 182 return head; 183 } 184 185 static inline void perf_mmap__write_tail(struct perf_mmap *md, 186 unsigned long tail) 187 { 188 struct perf_event_mmap_page *pc = md->base; 189 190 /* 191 * ensure all reads are done before we write the tail out. 192 */ 193 mb(); 194 pc->data_tail = tail; 195 } 196 197 #endif /* __PERF_EVLIST_H */ 198