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
13 struct perf_cpu_map;
14 struct perf_thread_map;
15 struct perf_mmap_param;
16
17 struct perf_evlist {
18 struct list_head entries;
19 int nr_entries;
20 bool has_user_cpus;
21 bool needs_map_propagation;
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
40 typedef void
41 (*perf_evlist_mmap__cb_idx_t)(struct perf_evlist*, struct perf_evsel*,
42 struct perf_mmap_param*, int);
43 typedef struct perf_mmap*
44 (*perf_evlist_mmap__cb_get_t)(struct perf_evlist*, bool, int);
45 typedef int
46 (*perf_evlist_mmap__cb_mmap_t)(struct perf_mmap*, struct perf_mmap_param*, int, struct perf_cpu);
47
48 struct perf_evlist_mmap_ops {
49 perf_evlist_mmap__cb_idx_t idx;
50 perf_evlist_mmap__cb_get_t get;
51 perf_evlist_mmap__cb_mmap_t mmap;
52 };
53
54 int perf_evlist__alloc_pollfd(struct perf_evlist *evlist);
55 int perf_evlist__add_pollfd(struct perf_evlist *evlist, int fd,
56 void *ptr, short revent, enum fdarray_flags flags);
57
58 int perf_evlist__mmap_ops(struct perf_evlist *evlist,
59 struct perf_evlist_mmap_ops *ops,
60 struct perf_mmap_param *mp);
61
62 void perf_evlist__init(struct perf_evlist *evlist);
63 void perf_evlist__exit(struct perf_evlist *evlist);
64
65 /**
66 * __perf_evlist__for_each_entry - iterate thru all the evsels
67 * @list: list_head instance to iterate
68 * @evsel: struct perf_evsel iterator
69 */
70 #define __perf_evlist__for_each_entry(list, evsel) \
71 list_for_each_entry(evsel, list, node)
72
73 /**
74 * evlist__for_each_entry - iterate thru all the evsels
75 * @evlist: perf_evlist instance to iterate
76 * @evsel: struct perf_evsel iterator
77 */
78 #define perf_evlist__for_each_entry(evlist, evsel) \
79 __perf_evlist__for_each_entry(&(evlist)->entries, evsel)
80
81 /**
82 * __perf_evlist__for_each_entry_reverse - iterate thru all the evsels in reverse order
83 * @list: list_head instance to iterate
84 * @evsel: struct evsel iterator
85 */
86 #define __perf_evlist__for_each_entry_reverse(list, evsel) \
87 list_for_each_entry_reverse(evsel, list, node)
88
89 /**
90 * perf_evlist__for_each_entry_reverse - iterate thru all the evsels in reverse order
91 * @evlist: evlist instance to iterate
92 * @evsel: struct evsel iterator
93 */
94 #define perf_evlist__for_each_entry_reverse(evlist, evsel) \
95 __perf_evlist__for_each_entry_reverse(&(evlist)->entries, evsel)
96
97 /**
98 * __perf_evlist__for_each_entry_safe - safely iterate thru all the evsels
99 * @list: list_head instance to iterate
100 * @tmp: struct evsel temp iterator
101 * @evsel: struct evsel iterator
102 */
103 #define __perf_evlist__for_each_entry_safe(list, tmp, evsel) \
104 list_for_each_entry_safe(evsel, tmp, list, node)
105
106 /**
107 * perf_evlist__for_each_entry_safe - safely iterate thru all the evsels
108 * @evlist: evlist instance to iterate
109 * @evsel: struct evsel iterator
110 * @tmp: struct evsel temp iterator
111 */
112 #define perf_evlist__for_each_entry_safe(evlist, tmp, evsel) \
113 __perf_evlist__for_each_entry_safe(&(evlist)->entries, tmp, evsel)
114
115 static inline struct perf_evsel *perf_evlist__first(struct perf_evlist *evlist)
116 {
117 return list_entry(evlist->entries.next, struct perf_evsel, node);
118 }
119
120 static inline struct perf_evsel *perf_evlist__last(struct perf_evlist *evlist)
121 {
122 return list_entry(evlist->entries.prev, struct perf_evsel, node);
123 }
124
125 u64 perf_evlist__read_format(struct perf_evlist *evlist);
126
127 void perf_evlist__id_add(struct perf_evlist *evlist,
128 struct perf_evsel *evsel,
129 int cpu_map_idx, int thread, u64 id);
130
131 int perf_evlist__id_add_fd(struct perf_evlist *evlist,
132 struct perf_evsel *evsel,
133 int cpu_map_idx, int thread, int fd);
134
135 void perf_evlist__reset_id_hash(struct perf_evlist *evlist);
136
137 void __perf_evlist__set_leader(struct list_head *list, struct perf_evsel *leader);
138
139 void perf_evlist__go_system_wide(struct perf_evlist *evlist, struct perf_evsel *evsel);
140 #endif /* __LIBPERF_INTERNAL_EVLIST_H */
141
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