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
 12struct perf_cpu_map;
 13struct perf_thread_map;
 14struct perf_mmap_param;
 15
 16struct perf_evlist {
 17	struct list_head	 entries;
 18	int			 nr_entries;
 19	int			 nr_groups;
 20	bool			 has_user_cpus;
 21	struct perf_cpu_map	*cpus;
 22	struct perf_cpu_map	*all_cpus;
 23	struct perf_thread_map	*threads;
 24	int			 nr_mmaps;
 25	size_t			 mmap_len;
 26	struct fdarray		 pollfd;
 27	struct hlist_head	 heads[PERF_EVLIST__HLIST_SIZE];
 28	struct perf_mmap	*mmap;
 29	struct perf_mmap	*mmap_ovw;
 30	struct perf_mmap	*mmap_first;
 31	struct perf_mmap	*mmap_ovw_first;
 32};
 33
 34typedef void
 35(*perf_evlist_mmap__cb_idx_t)(struct perf_evlist*, struct perf_mmap_param*, int, bool);
 36typedef struct perf_mmap*
 37(*perf_evlist_mmap__cb_get_t)(struct perf_evlist*, bool, int);
 38typedef int
 39(*perf_evlist_mmap__cb_mmap_t)(struct perf_mmap*, struct perf_mmap_param*, int, int);
 40
 41struct perf_evlist_mmap_ops {
 42	perf_evlist_mmap__cb_idx_t	idx;
 43	perf_evlist_mmap__cb_get_t	get;
 44	perf_evlist_mmap__cb_mmap_t	mmap;
 45};
 46
 47int perf_evlist__alloc_pollfd(struct perf_evlist *evlist);
 48int perf_evlist__add_pollfd(struct perf_evlist *evlist, int fd,
 49			    void *ptr, short revent, enum fdarray_flags flags);
 50
 51int perf_evlist__mmap_ops(struct perf_evlist *evlist,
 52			  struct perf_evlist_mmap_ops *ops,
 53			  struct perf_mmap_param *mp);
 54
 55void perf_evlist__init(struct perf_evlist *evlist);
 56void perf_evlist__exit(struct perf_evlist *evlist);
 57
 58/**
 59 * __perf_evlist__for_each_entry - iterate thru all the evsels
 60 * @list: list_head instance to iterate
 61 * @evsel: struct perf_evsel iterator
 62 */
 63#define __perf_evlist__for_each_entry(list, evsel) \
 64	list_for_each_entry(evsel, list, node)
 65
 66/**
 67 * evlist__for_each_entry - iterate thru all the evsels
 68 * @evlist: perf_evlist instance to iterate
 69 * @evsel: struct perf_evsel iterator
 70 */
 71#define perf_evlist__for_each_entry(evlist, evsel) \
 72	__perf_evlist__for_each_entry(&(evlist)->entries, evsel)
 73
 74/**
 75 * __perf_evlist__for_each_entry_reverse - iterate thru all the evsels in reverse order
 76 * @list: list_head instance to iterate
 77 * @evsel: struct evsel iterator
 78 */
 79#define __perf_evlist__for_each_entry_reverse(list, evsel) \
 80	list_for_each_entry_reverse(evsel, list, node)
 81
 82/**
 83 * perf_evlist__for_each_entry_reverse - iterate thru all the evsels in reverse order
 84 * @evlist: evlist instance to iterate
 85 * @evsel: struct evsel iterator
 86 */
 87#define perf_evlist__for_each_entry_reverse(evlist, evsel) \
 88	__perf_evlist__for_each_entry_reverse(&(evlist)->entries, evsel)
 89
 90/**
 91 * __perf_evlist__for_each_entry_safe - safely iterate thru all the evsels
 92 * @list: list_head instance to iterate
 93 * @tmp: struct evsel temp iterator
 94 * @evsel: struct evsel iterator
 95 */
 96#define __perf_evlist__for_each_entry_safe(list, tmp, evsel) \
 97	list_for_each_entry_safe(evsel, tmp, list, node)
 98
 99/**
100 * perf_evlist__for_each_entry_safe - safely iterate thru all the evsels
101 * @evlist: evlist instance to iterate
102 * @evsel: struct evsel iterator
103 * @tmp: struct evsel temp iterator
104 */
105#define perf_evlist__for_each_entry_safe(evlist, tmp, evsel) \
106	__perf_evlist__for_each_entry_safe(&(evlist)->entries, tmp, evsel)
107
108static inline struct perf_evsel *perf_evlist__first(struct perf_evlist *evlist)
109{
110	return list_entry(evlist->entries.next, struct perf_evsel, node);
111}
112
113static inline struct perf_evsel *perf_evlist__last(struct perf_evlist *evlist)
114{
115	return list_entry(evlist->entries.prev, struct perf_evsel, node);
116}
117
118u64 perf_evlist__read_format(struct perf_evlist *evlist);
119
120void perf_evlist__id_add(struct perf_evlist *evlist,
121			 struct perf_evsel *evsel,
122			 int cpu, int thread, u64 id);
123
124int perf_evlist__id_add_fd(struct perf_evlist *evlist,
125			   struct perf_evsel *evsel,
126			   int cpu, int thread, int fd);
127
128void perf_evlist__reset_id_hash(struct perf_evlist *evlist);
129
130void __perf_evlist__set_leader(struct list_head *list);
131#endif /* __LIBPERF_INTERNAL_EVLIST_H */