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
 13struct perf_cpu_map;
 14struct perf_thread_map;
 15struct perf_mmap_param;
 16
 17struct perf_evlist {
 18	struct list_head	 entries;
 19	int			 nr_entries;
 20	bool			 has_user_cpus;
 21	bool			 needs_map_propagation;
 22	/**
 23	 * The cpus passed from the command line or all online CPUs by
 24	 * default.
 25	 */
 26	struct perf_cpu_map	*user_requested_cpus;
 27	/** The union of all evsel cpu maps. */
 28	struct perf_cpu_map	*all_cpus;
 29	struct perf_thread_map	*threads;
 30	int			 nr_mmaps;
 31	size_t			 mmap_len;
 32	struct fdarray		 pollfd;
 33	struct hlist_head	 heads[PERF_EVLIST__HLIST_SIZE];
 34	struct perf_mmap	*mmap;
 35	struct perf_mmap	*mmap_ovw;
 36	struct perf_mmap	*mmap_first;
 37	struct perf_mmap	*mmap_ovw_first;
 38};
 39
 40typedef void
 41(*perf_evlist_mmap__cb_idx_t)(struct perf_evlist*, struct perf_evsel*,
 42			      struct perf_mmap_param*, int);
 43typedef struct perf_mmap*
 44(*perf_evlist_mmap__cb_get_t)(struct perf_evlist*, bool, int);
 45typedef int
 46(*perf_evlist_mmap__cb_mmap_t)(struct perf_mmap*, struct perf_mmap_param*, int, struct perf_cpu);
 47
 48struct perf_evlist_mmap_ops {
 49	perf_evlist_mmap__cb_idx_t	idx;
 50	perf_evlist_mmap__cb_get_t	get;
 51	perf_evlist_mmap__cb_mmap_t	mmap;
 52};
 53
 54int perf_evlist__alloc_pollfd(struct perf_evlist *evlist);
 55int perf_evlist__add_pollfd(struct perf_evlist *evlist, int fd,
 56			    void *ptr, short revent, enum fdarray_flags flags);
 57
 58int perf_evlist__mmap_ops(struct perf_evlist *evlist,
 59			  struct perf_evlist_mmap_ops *ops,
 60			  struct perf_mmap_param *mp);
 61
 62void perf_evlist__init(struct perf_evlist *evlist);
 63void perf_evlist__exit(struct perf_evlist *evlist);
 64
 65/**
 66 * __perf_evlist__for_each_entry - iterate thru all the evsels
 67 * @list: list_head instance to iterate
 68 * @evsel: struct perf_evsel iterator
 69 */
 70#define __perf_evlist__for_each_entry(list, evsel) \
 71	list_for_each_entry(evsel, list, node)
 72
 73/**
 74 * evlist__for_each_entry - iterate thru all the evsels
 75 * @evlist: perf_evlist instance to iterate
 76 * @evsel: struct perf_evsel iterator
 77 */
 78#define perf_evlist__for_each_entry(evlist, evsel) \
 79	__perf_evlist__for_each_entry(&(evlist)->entries, evsel)
 80
 81/**
 82 * __perf_evlist__for_each_entry_reverse - iterate thru all the evsels in reverse order
 83 * @list: list_head instance to iterate
 84 * @evsel: struct evsel iterator
 85 */
 86#define __perf_evlist__for_each_entry_reverse(list, evsel) \
 87	list_for_each_entry_reverse(evsel, list, node)
 88
 89/**
 90 * perf_evlist__for_each_entry_reverse - iterate thru all the evsels in reverse order
 91 * @evlist: evlist instance to iterate
 92 * @evsel: struct evsel iterator
 93 */
 94#define perf_evlist__for_each_entry_reverse(evlist, evsel) \
 95	__perf_evlist__for_each_entry_reverse(&(evlist)->entries, evsel)
 96
 97/**
 98 * __perf_evlist__for_each_entry_safe - safely iterate thru all the evsels
 99 * @list: list_head instance to iterate
100 * @tmp: struct evsel temp iterator
101 * @evsel: struct evsel iterator
102 */
103#define __perf_evlist__for_each_entry_safe(list, tmp, evsel) \
104	list_for_each_entry_safe(evsel, tmp, list, node)
105
106/**
107 * perf_evlist__for_each_entry_safe - safely iterate thru all the evsels
108 * @evlist: evlist instance to iterate
109 * @evsel: struct evsel iterator
110 * @tmp: struct evsel temp iterator
111 */
112#define perf_evlist__for_each_entry_safe(evlist, tmp, evsel) \
113	__perf_evlist__for_each_entry_safe(&(evlist)->entries, tmp, evsel)
114
115static inline struct perf_evsel *perf_evlist__first(struct perf_evlist *evlist)
116{
117	return list_entry(evlist->entries.next, struct perf_evsel, node);
118}
119
120static inline struct perf_evsel *perf_evlist__last(struct perf_evlist *evlist)
121{
122	return list_entry(evlist->entries.prev, struct perf_evsel, node);
123}
124
125u64 perf_evlist__read_format(struct perf_evlist *evlist);
126
127void perf_evlist__id_add(struct perf_evlist *evlist,
128			 struct perf_evsel *evsel,
129			 int cpu_map_idx, int thread, u64 id);
130
131int perf_evlist__id_add_fd(struct perf_evlist *evlist,
132			   struct perf_evsel *evsel,
133			   int cpu_map_idx, int thread, int fd);
134
135void perf_evlist__reset_id_hash(struct perf_evlist *evlist);
136
137void __perf_evlist__set_leader(struct list_head *list, struct perf_evsel *leader);
138
139void perf_evlist__go_system_wide(struct perf_evlist *evlist, struct perf_evsel *evsel);
140#endif /* __LIBPERF_INTERNAL_EVLIST_H */