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