tools/lib/perf/include/internal/evlist.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 #ifndef __LIBPERF_INTERNAL_EVLIST_H
   3 #define __LIBPERF_INTERNAL_EVLIST_H
   4
   5 #include <linux/list.h>
   6 #include <api/fd/array.h>
   7 #include <internal/evsel.h>
   8
   9 #define PERF_EVLIST__HLIST_BITS 8
  10 #define PERF_EVLIST__HLIST_SIZE (1 << PERF_EVLIST__HLIST_BITS)
  11
  12 struct perf_cpu_map;
  13 struct perf_thread_map;
  14 struct perf_mmap_param;
  15
  16 struct perf_evlist {
  17         struct list_head         entries;
  18         int                      nr_entries;
  19         int                      nr_groups;
  20         bool                     has_user_cpus;
  21         struct perf_cpu_map     *cpus;
  22         struct perf_cpu_map     *all_cpus;
  23         struct perf_thread_map  *threads;
  24         int                      nr_mmaps;
  25         size_t                   mmap_len;
  26         struct fdarray           pollfd;
  27         struct hlist_head        heads[PERF_EVLIST__HLIST_SIZE];
  28         struct perf_mmap        *mmap;
  29         struct perf_mmap        *mmap_ovw;
  30         struct perf_mmap        *mmap_first;
  31         struct perf_mmap        *mmap_ovw_first;
  32 };
  33
  34 typedef void
  35 (*perf_evlist_mmap__cb_idx_t)(struct perf_evlist*, struct perf_mmap_param*, int, bool);
  36 typedef struct perf_mmap*
  37 (*perf_evlist_mmap__cb_get_t)(struct perf_evlist*, bool, int);
  38 typedef int
  39 (*perf_evlist_mmap__cb_mmap_t)(struct perf_mmap*, struct perf_mmap_param*, int, int);
  40
  41 struct perf_evlist_mmap_ops {
  42         perf_evlist_mmap__cb_idx_t      idx;
  43         perf_evlist_mmap__cb_get_t      get;
  44         perf_evlist_mmap__cb_mmap_t     mmap;
  45 };
  46
  47 int perf_evlist__alloc_pollfd(struct perf_evlist *evlist);
  48 int perf_evlist__add_pollfd(struct perf_evlist *evlist, int fd,
  49                             void *ptr, short revent, enum fdarray_flags flags);
  50
  51 int perf_evlist__mmap_ops(struct perf_evlist *evlist,
  52                           struct perf_evlist_mmap_ops *ops,
  53                           struct perf_mmap_param *mp);
  54
  55 void perf_evlist__init(struct perf_evlist *evlist);
  56 void perf_evlist__exit(struct perf_evlist *evlist);
  57
  58 /**
  59  * __perf_evlist__for_each_entry - iterate thru all the evsels
  60  * @list: list_head instance to iterate
  61  * @evsel: struct perf_evsel iterator
  62  */
  63 #define __perf_evlist__for_each_entry(list, evsel) \
  64         list_for_each_entry(evsel, list, node)
  65
  66 /**
  67  * evlist__for_each_entry - iterate thru all the evsels
  68  * @evlist: perf_evlist instance to iterate
  69  * @evsel: struct perf_evsel iterator
  70  */
  71 #define perf_evlist__for_each_entry(evlist, evsel) \
  72         __perf_evlist__for_each_entry(&(evlist)->entries, evsel)
  73
  74 /**
  75  * __perf_evlist__for_each_entry_reverse - iterate thru all the evsels in reverse order
  76  * @list: list_head instance to iterate
  77  * @evsel: struct evsel iterator
  78  */
  79 #define __perf_evlist__for_each_entry_reverse(list, evsel) \
  80         list_for_each_entry_reverse(evsel, list, node)
  81
  82 /**
  83  * perf_evlist__for_each_entry_reverse - iterate thru all the evsels in reverse order
  84  * @evlist: evlist instance to iterate
  85  * @evsel: struct evsel iterator
  86  */
  87 #define perf_evlist__for_each_entry_reverse(evlist, evsel) \
  88         __perf_evlist__for_each_entry_reverse(&(evlist)->entries, evsel)
  89
  90 /**
  91  * __perf_evlist__for_each_entry_safe - safely iterate thru all the evsels
  92  * @list: list_head instance to iterate
  93  * @tmp: struct evsel temp iterator
  94  * @evsel: struct evsel iterator
  95  */
  96 #define __perf_evlist__for_each_entry_safe(list, tmp, evsel) \
  97         list_for_each_entry_safe(evsel, tmp, list, node)
  98
  99 /**
 100  * perf_evlist__for_each_entry_safe - safely iterate thru all the evsels
 101  * @evlist: evlist instance to iterate
 102  * @evsel: struct evsel iterator
 103  * @tmp: struct evsel temp iterator
 104  */
 105 #define perf_evlist__for_each_entry_safe(evlist, tmp, evsel) \
 106         __perf_evlist__for_each_entry_safe(&(evlist)->entries, tmp, evsel)
 107
 108 static inline struct perf_evsel *perf_evlist__first(struct perf_evlist *evlist)
 109 {
 110         return list_entry(evlist->entries.next, struct perf_evsel, node);
 111 }
 112
 113 static inline struct perf_evsel *perf_evlist__last(struct perf_evlist *evlist)
 114 {
 115         return list_entry(evlist->entries.prev, struct perf_evsel, node);
 116 }
 117
 118 u64 perf_evlist__read_format(struct perf_evlist *evlist);
 119
 120 void perf_evlist__id_add(struct perf_evlist *evlist,
 121                          struct perf_evsel *evsel,
 122                          int cpu, int thread, u64 id);
 123
 124 int perf_evlist__id_add_fd(struct perf_evlist *evlist,
 125                            struct perf_evsel *evsel,
 126                            int cpu, int thread, int fd);
 127
 128 void perf_evlist__reset_id_hash(struct perf_evlist *evlist);
 129
 130 void __perf_evlist__set_leader(struct list_head *list, struct perf_evsel *leader);
 131 #endif /* __LIBPERF_INTERNAL_EVLIST_H */