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