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 void perf_evlist__id_add(struct perf_evlist *evlist, struct perf_evsel *evsel,
  78                          int cpu, int thread, u64 id);
  79
  80 void perf_evlist__add_pollfd(struct perf_evlist *evlist, int fd);
  81
  82 struct perf_evsel *perf_evlist__id2evsel(struct perf_evlist *evlist, u64 id);
  83
  84 struct perf_sample_id *perf_evlist__id2sid(struct perf_evlist *evlist, u64 id);
  85
  86 union perf_event *perf_evlist__mmap_read(struct perf_evlist *self, int idx);
  87
  88 int perf_evlist__open(struct perf_evlist *evlist);
  89 void perf_evlist__close(struct perf_evlist *evlist);
  90
  91 void perf_evlist__set_id_pos(struct perf_evlist *evlist);
  92 bool perf_can_sample_identifier(void);
  93 void perf_evlist__config(struct perf_evlist *evlist,
  94                          struct perf_record_opts *opts);
  95
  96 int perf_evlist__prepare_workload(struct perf_evlist *evlist,
  97                                   struct perf_target *target,
  98                                   const char *argv[], bool pipe_output,
  99                                   bool want_signal);
 100 int perf_evlist__start_workload(struct perf_evlist *evlist);
 101
 102 int perf_evlist__mmap(struct perf_evlist *evlist, unsigned int pages,
 103                       bool overwrite);
 104 void perf_evlist__munmap(struct perf_evlist *evlist);
 105
 106 void perf_evlist__disable(struct perf_evlist *evlist);
 107 void perf_evlist__enable(struct perf_evlist *evlist);
 108
 109 void perf_evlist__set_selected(struct perf_evlist *evlist,
 110                                struct perf_evsel *evsel);
 111
 112 static inline void perf_evlist__set_maps(struct perf_evlist *evlist,
 113                                          struct cpu_map *cpus,
 114                                          struct thread_map *threads)
 115 {
 116         evlist->cpus    = cpus;
 117         evlist->threads = threads;
 118 }
 119
 120 int perf_evlist__create_maps(struct perf_evlist *evlist,
 121                              struct perf_target *target);
 122 void perf_evlist__delete_maps(struct perf_evlist *evlist);
 123 int perf_evlist__apply_filters(struct perf_evlist *evlist);
 124
 125 void __perf_evlist__set_leader(struct list_head *list);
 126 void perf_evlist__set_leader(struct perf_evlist *evlist);
 127
 128 u64 perf_evlist__read_format(struct perf_evlist *evlist);
 129 u64 __perf_evlist__combined_sample_type(struct perf_evlist *evlist);
 130 u64 perf_evlist__combined_sample_type(struct perf_evlist *evlist);
 131 bool perf_evlist__sample_id_all(struct perf_evlist *evlist);
 132 u16 perf_evlist__id_hdr_size(struct perf_evlist *evlist);
 133
 134 int perf_evlist__parse_sample(struct perf_evlist *evlist, union perf_event *event,
 135                               struct perf_sample *sample);
 136
 137 bool perf_evlist__valid_sample_type(struct perf_evlist *evlist);
 138 bool perf_evlist__valid_sample_id_all(struct perf_evlist *evlist);
 139 bool perf_evlist__valid_read_format(struct perf_evlist *evlist);
 140
 141 void perf_evlist__splice_list_tail(struct perf_evlist *evlist,
 142                                    struct list_head *list,
 143                                    int nr_entries);
 144
 145 static inline struct perf_evsel *perf_evlist__first(struct perf_evlist *evlist)
 146 {
 147         return list_entry(evlist->entries.next, struct perf_evsel, node);
 148 }
 149
 150 static inline struct perf_evsel *perf_evlist__last(struct perf_evlist *evlist)
 151 {
 152         return list_entry(evlist->entries.prev, struct perf_evsel, node);
 153 }
 154
 155 size_t perf_evlist__fprintf(struct perf_evlist *evlist, FILE *fp);
 156
 157 static inline unsigned int perf_mmap__read_head(struct perf_mmap *mm)
 158 {
 159         struct perf_event_mmap_page *pc = mm->base;
 160         int head = pc->data_head;
 161         rmb();
 162         return head;
 163 }
 164
 165 static inline void perf_mmap__write_tail(struct perf_mmap *md,
 166                                          unsigned long tail)
 167 {
 168         struct perf_event_mmap_page *pc = md->base;
 169
 170         /*
 171          * ensure all reads are done before we write the tail out.
 172          */
 173         /* mb(); */
 174         pc->data_tail = tail;
 175 }
 176
 177 #endif /* __PERF_EVLIST_H */