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
perf_evlist__first(struct perf_evlist * evlist)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
perf_evlist__last(struct perf_evlist * evlist)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 */
128