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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/cpumap.h>
8#include <internal/evsel.h>
9
10#define PERF_EVLIST__HLIST_BITS 8
11#define PERF_EVLIST__HLIST_SIZE (1 << PERF_EVLIST__HLIST_BITS)
12
13struct perf_cpu_map;
14struct perf_thread_map;
15struct perf_mmap_param;
16
17struct perf_evlist {
18 struct list_head entries;
19 int nr_entries;
20 int nr_groups;
21 bool has_user_cpus;
22 /**
23 * The cpus passed from the command line or all online CPUs by
24 * default.
25 */
26 struct perf_cpu_map *user_requested_cpus;
27 /** The union of all evsel cpu maps. */
28 struct perf_cpu_map *all_cpus;
29 struct perf_thread_map *threads;
30 int nr_mmaps;
31 size_t mmap_len;
32 struct fdarray pollfd;
33 struct hlist_head heads[PERF_EVLIST__HLIST_SIZE];
34 struct perf_mmap *mmap;
35 struct perf_mmap *mmap_ovw;
36 struct perf_mmap *mmap_first;
37 struct perf_mmap *mmap_ovw_first;
38};
39
40typedef void
41(*perf_evlist_mmap__cb_idx_t)(struct perf_evlist*, struct perf_mmap_param*, int, bool);
42typedef struct perf_mmap*
43(*perf_evlist_mmap__cb_get_t)(struct perf_evlist*, bool, int);
44typedef int
45(*perf_evlist_mmap__cb_mmap_t)(struct perf_mmap*, struct perf_mmap_param*, int, struct perf_cpu);
46
47struct perf_evlist_mmap_ops {
48 perf_evlist_mmap__cb_idx_t idx;
49 perf_evlist_mmap__cb_get_t get;
50 perf_evlist_mmap__cb_mmap_t mmap;
51};
52
53int perf_evlist__alloc_pollfd(struct perf_evlist *evlist);
54int perf_evlist__add_pollfd(struct perf_evlist *evlist, int fd,
55 void *ptr, short revent, enum fdarray_flags flags);
56
57int perf_evlist__mmap_ops(struct perf_evlist *evlist,
58 struct perf_evlist_mmap_ops *ops,
59 struct perf_mmap_param *mp);
60
61void perf_evlist__init(struct perf_evlist *evlist);
62void perf_evlist__exit(struct perf_evlist *evlist);
63
64/**
65 * __perf_evlist__for_each_entry - iterate thru all the evsels
66 * @list: list_head instance to iterate
67 * @evsel: struct perf_evsel iterator
68 */
69#define __perf_evlist__for_each_entry(list, evsel) \
70 list_for_each_entry(evsel, list, node)
71
72/**
73 * evlist__for_each_entry - iterate thru all the evsels
74 * @evlist: perf_evlist instance to iterate
75 * @evsel: struct perf_evsel iterator
76 */
77#define perf_evlist__for_each_entry(evlist, evsel) \
78 __perf_evlist__for_each_entry(&(evlist)->entries, evsel)
79
80/**
81 * __perf_evlist__for_each_entry_reverse - iterate thru all the evsels in reverse order
82 * @list: list_head instance to iterate
83 * @evsel: struct evsel iterator
84 */
85#define __perf_evlist__for_each_entry_reverse(list, evsel) \
86 list_for_each_entry_reverse(evsel, list, node)
87
88/**
89 * perf_evlist__for_each_entry_reverse - iterate thru all the evsels in reverse order
90 * @evlist: evlist instance to iterate
91 * @evsel: struct evsel iterator
92 */
93#define perf_evlist__for_each_entry_reverse(evlist, evsel) \
94 __perf_evlist__for_each_entry_reverse(&(evlist)->entries, evsel)
95
96/**
97 * __perf_evlist__for_each_entry_safe - safely iterate thru all the evsels
98 * @list: list_head instance to iterate
99 * @tmp: struct evsel temp iterator
100 * @evsel: struct evsel iterator
101 */
102#define __perf_evlist__for_each_entry_safe(list, tmp, evsel) \
103 list_for_each_entry_safe(evsel, tmp, list, node)
104
105/**
106 * perf_evlist__for_each_entry_safe - safely iterate thru all the evsels
107 * @evlist: evlist instance to iterate
108 * @evsel: struct evsel iterator
109 * @tmp: struct evsel temp iterator
110 */
111#define perf_evlist__for_each_entry_safe(evlist, tmp, evsel) \
112 __perf_evlist__for_each_entry_safe(&(evlist)->entries, tmp, evsel)
113
114static inline struct perf_evsel *perf_evlist__first(struct perf_evlist *evlist)
115{
116 return list_entry(evlist->entries.next, struct perf_evsel, node);
117}
118
119static inline struct perf_evsel *perf_evlist__last(struct perf_evlist *evlist)
120{
121 return list_entry(evlist->entries.prev, struct perf_evsel, node);
122}
123
124u64 perf_evlist__read_format(struct perf_evlist *evlist);
125
126void perf_evlist__id_add(struct perf_evlist *evlist,
127 struct perf_evsel *evsel,
128 int cpu, int thread, u64 id);
129
130int perf_evlist__id_add_fd(struct perf_evlist *evlist,
131 struct perf_evsel *evsel,
132 int cpu, int thread, int fd);
133
134void perf_evlist__reset_id_hash(struct perf_evlist *evlist);
135
136void __perf_evlist__set_leader(struct list_head *list, struct perf_evsel *leader);
137#endif /* __LIBPERF_INTERNAL_EVLIST_H */