tools/perf/util/evlist.h

   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         union perf_event event_copy;
  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         int              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 void perf_evlist__init(struct perf_evlist *evlist, struct cpu_map *cpus,
  57                        struct thread_map *threads);
  58 void perf_evlist__exit(struct perf_evlist *evlist);
  59 void perf_evlist__delete(struct perf_evlist *evlist);
  60
  61 void perf_evlist__add(struct perf_evlist *evlist, struct perf_evsel *entry);
  62 int perf_evlist__add_default(struct perf_evlist *evlist);
  63 int __perf_evlist__add_default_attrs(struct perf_evlist *evlist,
  64                                      struct perf_event_attr *attrs, size_t nr_attrs);
  65
  66 #define perf_evlist__add_default_attrs(evlist, array) \
  67         __perf_evlist__add_default_attrs(evlist, array, ARRAY_SIZE(array))
  68
  69 int perf_evlist__add_newtp(struct perf_evlist *evlist,
  70                            const char *sys, const char *name, void *handler);
  71
  72 int perf_evlist__set_filter(struct perf_evlist *evlist, const char *filter);
  73
  74 struct perf_evsel *
  75 perf_evlist__find_tracepoint_by_id(struct perf_evlist *evlist, int id);
  76
  77 struct perf_evsel *
  78 perf_evlist__find_tracepoint_by_name(struct perf_evlist *evlist,
  79                                      const char *name);
  80
  81 void perf_evlist__id_add(struct perf_evlist *evlist, struct perf_evsel *evsel,
  82                          int cpu, int thread, u64 id);
  83
  84 void perf_evlist__add_pollfd(struct perf_evlist *evlist, int fd);
  85
  86 struct perf_evsel *perf_evlist__id2evsel(struct perf_evlist *evlist, u64 id);
  87
  88 struct perf_sample_id *perf_evlist__id2sid(struct perf_evlist *evlist, u64 id);
  89
  90 union perf_event *perf_evlist__mmap_read(struct perf_evlist *self, int idx);
  91
  92 void perf_evlist__mmap_consume(struct perf_evlist *evlist, int idx);
  93
  94 int perf_evlist__open(struct perf_evlist *evlist);
  95 void perf_evlist__close(struct perf_evlist *evlist);
  96
  97 void perf_evlist__set_id_pos(struct perf_evlist *evlist);
  98 bool perf_can_sample_identifier(void);
  99 void perf_evlist__config(struct perf_evlist *evlist,
 100                          struct perf_record_opts *opts);
 101
 102 int perf_evlist__prepare_workload(struct perf_evlist *evlist,
 103                                   struct perf_target *target,
 104                                   const char *argv[], bool pipe_output,
 105                                   bool want_signal);
 106 int perf_evlist__start_workload(struct perf_evlist *evlist);
 107
 108 int perf_evlist__mmap(struct perf_evlist *evlist, unsigned int pages,
 109                       bool overwrite);
 110 void perf_evlist__munmap(struct perf_evlist *evlist);
 111
 112 void perf_evlist__disable(struct perf_evlist *evlist);
 113 void perf_evlist__enable(struct perf_evlist *evlist);
 114
 115 int perf_evlist__disable_event(struct perf_evlist *evlist,
 116                                struct perf_evsel *evsel);
 117 int perf_evlist__enable_event(struct perf_evlist *evlist,
 118                               struct perf_evsel *evsel);
 119
 120 void perf_evlist__set_selected(struct perf_evlist *evlist,
 121                                struct perf_evsel *evsel);
 122
 123 static inline void perf_evlist__set_maps(struct perf_evlist *evlist,
 124                                          struct cpu_map *cpus,
 125                                          struct thread_map *threads)
 126 {
 127         evlist->cpus    = cpus;
 128         evlist->threads = threads;
 129 }
 130
 131 int perf_evlist__create_maps(struct perf_evlist *evlist,
 132                              struct perf_target *target);
 133 void perf_evlist__delete_maps(struct perf_evlist *evlist);
 134 int perf_evlist__apply_filters(struct perf_evlist *evlist);
 135
 136 void __perf_evlist__set_leader(struct list_head *list);
 137 void perf_evlist__set_leader(struct perf_evlist *evlist);
 138
 139 u64 perf_evlist__read_format(struct perf_evlist *evlist);
 140 u64 __perf_evlist__combined_sample_type(struct perf_evlist *evlist);
 141 u64 perf_evlist__combined_sample_type(struct perf_evlist *evlist);
 142 bool perf_evlist__sample_id_all(struct perf_evlist *evlist);
 143 u16 perf_evlist__id_hdr_size(struct perf_evlist *evlist);
 144
 145 int perf_evlist__parse_sample(struct perf_evlist *evlist, union perf_event *event,
 146                               struct perf_sample *sample);
 147
 148 bool perf_evlist__valid_sample_type(struct perf_evlist *evlist);
 149 bool perf_evlist__valid_sample_id_all(struct perf_evlist *evlist);
 150 bool perf_evlist__valid_read_format(struct perf_evlist *evlist);
 151
 152 void perf_evlist__splice_list_tail(struct perf_evlist *evlist,
 153                                    struct list_head *list,
 154                                    int nr_entries);
 155
 156 static inline struct perf_evsel *perf_evlist__first(struct perf_evlist *evlist)
 157 {
 158         return list_entry(evlist->entries.next, struct perf_evsel, node);
 159 }
 160
 161 static inline struct perf_evsel *perf_evlist__last(struct perf_evlist *evlist)
 162 {
 163         return list_entry(evlist->entries.prev, struct perf_evsel, node);
 164 }
 165
 166 size_t perf_evlist__fprintf(struct perf_evlist *evlist, FILE *fp);
 167
 168 static inline unsigned int perf_mmap__read_head(struct perf_mmap *mm)
 169 {
 170         struct perf_event_mmap_page *pc = mm->base;
 171         int head = pc->data_head;
 172         rmb();
 173         return head;
 174 }
 175
 176 static inline void perf_mmap__write_tail(struct perf_mmap *md,
 177                                          unsigned long tail)
 178 {
 179         struct perf_event_mmap_page *pc = md->base;
 180
 181         /*
 182          * ensure all reads are done before we write the tail out.
 183          */
 184         /* mb(); */
 185         pc->data_tail = tail;
 186 }
 187
 188 #endif /* __PERF_EVLIST_H */