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