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 int nr_groups;
21 bool has_user_cpus;
22 bool needs_map_propagation;
23 /**
24 * The cpus passed from the command line or all online CPUs by
25 * default.
26 */
27 struct perf_cpu_map *user_requested_cpus;
28 /** The union of all evsel cpu maps. */
29 struct perf_cpu_map *all_cpus;
30 struct perf_thread_map *threads;
31 int nr_mmaps;
32 size_t mmap_len;
33 struct fdarray pollfd;
34 struct hlist_head heads[PERF_EVLIST__HLIST_SIZE];
35 struct perf_mmap *mmap;
36 struct perf_mmap *mmap_ovw;
37 struct perf_mmap *mmap_first;
38 struct perf_mmap *mmap_ovw_first;
39 };
40
41 typedef void
42 (*perf_evlist_mmap__cb_idx_t)(struct perf_evlist*, struct perf_evsel*,
43 struct perf_mmap_param*, int);
44 typedef struct perf_mmap*
45 (*perf_evlist_mmap__cb_get_t)(struct perf_evlist*, bool, int);
46 typedef int
47 (*perf_evlist_mmap__cb_mmap_t)(struct perf_mmap*, struct perf_mmap_param*, int, struct perf_cpu);
48
49 struct perf_evlist_mmap_ops {
50 perf_evlist_mmap__cb_idx_t idx;
51 perf_evlist_mmap__cb_get_t get;
52 perf_evlist_mmap__cb_mmap_t mmap;
53 };
54
55 int perf_evlist__alloc_pollfd(struct perf_evlist *evlist);
56 int perf_evlist__add_pollfd(struct perf_evlist *evlist, int fd,
57 void *ptr, short revent, enum fdarray_flags flags);
58
59 int perf_evlist__mmap_ops(struct perf_evlist *evlist,
60 struct perf_evlist_mmap_ops *ops,
61 struct perf_mmap_param *mp);
62
63 void perf_evlist__init(struct perf_evlist *evlist);
64 void perf_evlist__exit(struct perf_evlist *evlist);
65
66 /**
67 * __perf_evlist__for_each_entry - iterate thru all the evsels
68 * @list: list_head instance to iterate
69 * @evsel: struct perf_evsel iterator
70 */
71 #define __perf_evlist__for_each_entry(list, evsel) \
72 list_for_each_entry(evsel, list, node)
73
74 /**
75 * evlist__for_each_entry - iterate thru all the evsels
76 * @evlist: perf_evlist instance to iterate
77 * @evsel: struct perf_evsel iterator
78 */
79 #define perf_evlist__for_each_entry(evlist, evsel) \
80 __perf_evlist__for_each_entry(&(evlist)->entries, evsel)
81
82 /**
83 * __perf_evlist__for_each_entry_reverse - iterate thru all the evsels in reverse order
84 * @list: list_head instance to iterate
85 * @evsel: struct evsel iterator
86 */
87 #define __perf_evlist__for_each_entry_reverse(list, evsel) \
88 list_for_each_entry_reverse(evsel, list, node)
89
90 /**
91 * perf_evlist__for_each_entry_reverse - iterate thru all the evsels in reverse order
92 * @evlist: evlist instance to iterate
93 * @evsel: struct evsel iterator
94 */
95 #define perf_evlist__for_each_entry_reverse(evlist, evsel) \
96 __perf_evlist__for_each_entry_reverse(&(evlist)->entries, evsel)
97
98 /**
99 * __perf_evlist__for_each_entry_safe - safely iterate thru all the evsels
100 * @list: list_head instance to iterate
101 * @tmp: struct evsel temp iterator
102 * @evsel: struct evsel iterator
103 */
104 #define __perf_evlist__for_each_entry_safe(list, tmp, evsel) \
105 list_for_each_entry_safe(evsel, tmp, list, node)
106
107 /**
108 * perf_evlist__for_each_entry_safe - safely iterate thru all the evsels
109 * @evlist: evlist instance to iterate
110 * @evsel: struct evsel iterator
111 * @tmp: struct evsel temp iterator
112 */
113 #define perf_evlist__for_each_entry_safe(evlist, tmp, evsel) \
114 __perf_evlist__for_each_entry_safe(&(evlist)->entries, tmp, evsel)
115
perf_evlist__first(struct perf_evlist * evlist)116 static inline struct perf_evsel *perf_evlist__first(struct perf_evlist *evlist)
117 {
118 return list_entry(evlist->entries.next, struct perf_evsel, node);
119 }
120
perf_evlist__last(struct perf_evlist * evlist)121 static inline struct perf_evsel *perf_evlist__last(struct perf_evlist *evlist)
122 {
123 return list_entry(evlist->entries.prev, struct perf_evsel, node);
124 }
125
126 u64 perf_evlist__read_format(struct perf_evlist *evlist);
127
128 void perf_evlist__id_add(struct perf_evlist *evlist,
129 struct perf_evsel *evsel,
130 int cpu, int thread, u64 id);
131
132 int perf_evlist__id_add_fd(struct perf_evlist *evlist,
133 struct perf_evsel *evsel,
134 int cpu, int thread, int fd);
135
136 void perf_evlist__reset_id_hash(struct perf_evlist *evlist);
137
138 void __perf_evlist__set_leader(struct list_head *list, struct perf_evsel *leader);
139 #endif /* __LIBPERF_INTERNAL_EVLIST_H */
140