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