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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/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 
15 struct perf_evlist {
16 	struct list_head	 entries;
17 	int			 nr_entries;
18 	bool			 has_user_cpus;
19 	struct perf_cpu_map	*cpus;
20 	struct perf_thread_map	*threads;
21 	int			 nr_mmaps;
22 	size_t			 mmap_len;
23 	struct fdarray		 pollfd;
24 	struct hlist_head	 heads[PERF_EVLIST__HLIST_SIZE];
25 };
26 
27 int perf_evlist__alloc_pollfd(struct perf_evlist *evlist);
28 int perf_evlist__add_pollfd(struct perf_evlist *evlist, int fd,
29 			    void *ptr, short revent);
30 
31 /**
32  * __perf_evlist__for_each_entry - iterate thru all the evsels
33  * @list: list_head instance to iterate
34  * @evsel: struct perf_evsel iterator
35  */
36 #define __perf_evlist__for_each_entry(list, evsel) \
37 	list_for_each_entry(evsel, list, node)
38 
39 /**
40  * evlist__for_each_entry - iterate thru all the evsels
41  * @evlist: perf_evlist instance to iterate
42  * @evsel: struct perf_evsel iterator
43  */
44 #define perf_evlist__for_each_entry(evlist, evsel) \
45 	__perf_evlist__for_each_entry(&(evlist)->entries, evsel)
46 
47 /**
48  * __perf_evlist__for_each_entry_reverse - iterate thru all the evsels in reverse order
49  * @list: list_head instance to iterate
50  * @evsel: struct evsel iterator
51  */
52 #define __perf_evlist__for_each_entry_reverse(list, evsel) \
53 	list_for_each_entry_reverse(evsel, list, node)
54 
55 /**
56  * perf_evlist__for_each_entry_reverse - iterate thru all the evsels in reverse order
57  * @evlist: evlist instance to iterate
58  * @evsel: struct evsel iterator
59  */
60 #define perf_evlist__for_each_entry_reverse(evlist, evsel) \
61 	__perf_evlist__for_each_entry_reverse(&(evlist)->entries, evsel)
62 
perf_evlist__first(struct perf_evlist * evlist)63 static inline struct perf_evsel *perf_evlist__first(struct perf_evlist *evlist)
64 {
65 	return list_entry(evlist->entries.next, struct perf_evsel, node);
66 }
67 
perf_evlist__last(struct perf_evlist * evlist)68 static inline struct perf_evsel *perf_evlist__last(struct perf_evlist *evlist)
69 {
70 	return list_entry(evlist->entries.prev, struct perf_evsel, node);
71 }
72 
73 u64 perf_evlist__read_format(struct perf_evlist *evlist);
74 
75 void perf_evlist__id_add(struct perf_evlist *evlist,
76 			 struct perf_evsel *evsel,
77 			 int cpu, int thread, u64 id);
78 
79 int perf_evlist__id_add_fd(struct perf_evlist *evlist,
80 			   struct perf_evsel *evsel,
81 			   int cpu, int thread, int fd);
82 
83 #endif /* __LIBPERF_INTERNAL_EVLIST_H */
84