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         struct {
  36                 int     cork_fd;
  37                 pid_t   pid;
  38         } workload;
  39         bool             overwrite;
  40         struct perf_mmap *mmap;
  41         struct pollfd    *pollfd;
  42         struct thread_map *threads;
  43         struct cpu_map    *cpus;
  44         struct perf_evsel *selected;
  45 };
  46
  47 struct perf_evsel_str_handler {
  48         const char *name;
  49         void       *handler;
  50 };
  51
  52 struct perf_evlist *perf_evlist__new(struct cpu_map *cpus,
  53                                      struct thread_map *threads);
  54 void perf_evlist__init(struct perf_evlist *evlist, struct cpu_map *cpus,
  55                        struct thread_map *threads);
  56 void perf_evlist__exit(struct perf_evlist *evlist);
  57 void perf_evlist__delete(struct perf_evlist *evlist);
  58
  59 void perf_evlist__add(struct perf_evlist *evlist, struct perf_evsel *entry);
  60 int perf_evlist__add_default(struct perf_evlist *evlist);
  61 int __perf_evlist__add_default_attrs(struct perf_evlist *evlist,
  62                                      struct perf_event_attr *attrs, size_t nr_attrs);
  63
  64 #define perf_evlist__add_default_attrs(evlist, array) \
  65         __perf_evlist__add_default_attrs(evlist, array, ARRAY_SIZE(array))
  66
  67 int perf_evlist__add_newtp(struct perf_evlist *evlist,
  68                            const char *sys, const char *name, void *handler);
  69
  70 int perf_evlist__set_filter(struct perf_evlist *evlist, const char *filter);
  71
  72 struct perf_evsel *
  73 perf_evlist__find_tracepoint_by_id(struct perf_evlist *evlist, int id);
  74
  75 void perf_evlist__id_add(struct perf_evlist *evlist, struct perf_evsel *evsel,
  76                          int cpu, int thread, u64 id);
  77
  78 void perf_evlist__add_pollfd(struct perf_evlist *evlist, int fd);
  79
  80 struct perf_evsel *perf_evlist__id2evsel(struct perf_evlist *evlist, u64 id);
  81
  82 union perf_event *perf_evlist__mmap_read(struct perf_evlist *self, int idx);
  83
  84 int perf_evlist__open(struct perf_evlist *evlist);
  85
  86 void perf_evlist__config(struct perf_evlist *evlist,
  87                          struct perf_record_opts *opts);
  88
  89 int perf_evlist__prepare_workload(struct perf_evlist *evlist,
  90                                   struct perf_record_opts *opts,
  91                                   const char *argv[]);
  92 int perf_evlist__start_workload(struct perf_evlist *evlist);
  93
  94 int perf_evlist__mmap(struct perf_evlist *evlist, unsigned int pages,
  95                       bool overwrite);
  96 void perf_evlist__munmap(struct perf_evlist *evlist);
  97
  98 void perf_evlist__disable(struct perf_evlist *evlist);
  99 void perf_evlist__enable(struct perf_evlist *evlist);
 100
 101 void perf_evlist__set_selected(struct perf_evlist *evlist,
 102                                struct perf_evsel *evsel);
 103
 104 static inline void perf_evlist__set_maps(struct perf_evlist *evlist,
 105                                          struct cpu_map *cpus,
 106                                          struct thread_map *threads)
 107 {
 108         evlist->cpus    = cpus;
 109         evlist->threads = threads;
 110 }
 111
 112 int perf_evlist__create_maps(struct perf_evlist *evlist,
 113                              struct perf_target *target);
 114 void perf_evlist__delete_maps(struct perf_evlist *evlist);
 115 int perf_evlist__apply_filters(struct perf_evlist *evlist);
 116
 117 void __perf_evlist__set_leader(struct list_head *list);
 118 void perf_evlist__set_leader(struct perf_evlist *evlist);
 119
 120 u64 perf_evlist__sample_type(struct perf_evlist *evlist);
 121 bool perf_evlist__sample_id_all(struct perf_evlist *evlist);
 122 u16 perf_evlist__id_hdr_size(struct perf_evlist *evlist);
 123
 124 int perf_evlist__parse_sample(struct perf_evlist *evlist, union perf_event *event,
 125                               struct perf_sample *sample);
 126
 127 bool perf_evlist__valid_sample_type(struct perf_evlist *evlist);
 128 bool perf_evlist__valid_sample_id_all(struct perf_evlist *evlist);
 129
 130 void perf_evlist__splice_list_tail(struct perf_evlist *evlist,
 131                                    struct list_head *list,
 132                                    int nr_entries);
 133
 134 static inline struct perf_evsel *perf_evlist__first(struct perf_evlist *evlist)
 135 {
 136         return list_entry(evlist->entries.next, struct perf_evsel, node);
 137 }
 138
 139 static inline struct perf_evsel *perf_evlist__last(struct perf_evlist *evlist)
 140 {
 141         return list_entry(evlist->entries.prev, struct perf_evsel, node);
 142 }
 143
 144 size_t perf_evlist__fprintf(struct perf_evlist *evlist, FILE *fp);
 145
 146 static inline unsigned int perf_mmap__read_head(struct perf_mmap *mm)
 147 {
 148         struct perf_event_mmap_page *pc = mm->base;
 149         int head = pc->data_head;
 150         rmb();
 151         return head;
 152 }
 153
 154 static inline void perf_mmap__write_tail(struct perf_mmap *md,
 155                                          unsigned long tail)
 156 {
 157         struct perf_event_mmap_page *pc = md->base;
 158
 159         /*
 160          * ensure all reads are done before we write the tail out.
 161          */
 162         /* mb(); */
 163         pc->data_tail = tail;
 164 }
 165
 166 #endif /* __PERF_EVLIST_H */