LXR linux/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
  12struct perf_cpu_map;
  13struct perf_thread_map;
  14struct perf_mmap_param;
  15
  16struct 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
  33typedef void
  34(*perf_evlist_mmap__cb_idx_t)(struct perf_evlist*, struct perf_mmap_param*, int, bool);
  35typedef struct perf_mmap*
  36(*perf_evlist_mmap__cb_get_t)(struct perf_evlist*, bool, int);
  37typedef int
  38(*perf_evlist_mmap__cb_mmap_t)(struct perf_mmap*, struct perf_mmap_param*, int, int);
  39
  40struct 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
  46int perf_evlist__alloc_pollfd(struct perf_evlist *evlist);
  47int perf_evlist__add_pollfd(struct perf_evlist *evlist, int fd,
  48                            void *ptr, short revent);
  49
  50int perf_evlist__mmap_ops(struct perf_evlist *evlist,
  51                          struct perf_evlist_mmap_ops *ops,
  52                          struct perf_mmap_param *mp);
  53
  54void perf_evlist__init(struct perf_evlist *evlist);
  55void 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
 107static 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
 112static 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
 117u64 perf_evlist__read_format(struct perf_evlist *evlist);
 118
 119void perf_evlist__id_add(struct perf_evlist *evlist,
 120                         struct perf_evsel *evsel,
 121                         int cpu, int thread, u64 id);
 122
 123int 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 */
 128