1#ifndef __PERF_EVLIST_H
2#define __PERF_EVLIST_H 1
3
4#include <linux/list.h>
5#include <stdio.h>
6#include "../perf.h"
7#include "event.h"
8#include "evsel.h"
9#include "util.h"
10#include <unistd.h>
11
12struct pollfd;
13struct thread_map;
14struct cpu_map;
15struct perf_record_opts;
16
17#define PERF_EVLIST__HLIST_BITS 8
18#define PERF_EVLIST__HLIST_SIZE (1 << PERF_EVLIST__HLIST_BITS)
19
20struct perf_mmap {
21	void		 *base;
22	int		 mask;
23	unsigned int	 prev;
24	union perf_event event_copy;
25};
26
27struct perf_evlist {
28	struct list_head entries;
29	struct hlist_head heads[PERF_EVLIST__HLIST_SIZE];
30	int		 nr_entries;
31	int		 nr_groups;
32	int		 nr_fds;
33	int		 nr_mmaps;
34	int		 mmap_len;
35	int		 id_pos;
36	int		 is_pos;
37	u64		 combined_sample_type;
38	struct {
39		int	cork_fd;
40		pid_t	pid;
41	} workload;
42	bool		 overwrite;
43	struct perf_mmap *mmap;
44	struct pollfd	 *pollfd;
45	struct thread_map *threads;
46	struct cpu_map	  *cpus;
47	struct perf_evsel *selected;
48};
49
50struct perf_evsel_str_handler {
51	const char *name;
52	void	   *handler;
53};
54
55struct perf_evlist *perf_evlist__new(void);
56void perf_evlist__init(struct perf_evlist *evlist, struct cpu_map *cpus,
57		       struct thread_map *threads);
58void perf_evlist__exit(struct perf_evlist *evlist);
59void perf_evlist__delete(struct perf_evlist *evlist);
60
61void perf_evlist__add(struct perf_evlist *evlist, struct perf_evsel *entry);
62int perf_evlist__add_default(struct perf_evlist *evlist);
63int __perf_evlist__add_default_attrs(struct perf_evlist *evlist,
64				     struct perf_event_attr *attrs, size_t nr_attrs);
65
66#define perf_evlist__add_default_attrs(evlist, array) \
67	__perf_evlist__add_default_attrs(evlist, array, ARRAY_SIZE(array))
68
69int perf_evlist__add_newtp(struct perf_evlist *evlist,
70			   const char *sys, const char *name, void *handler);
71
72int perf_evlist__set_filter(struct perf_evlist *evlist, const char *filter);
73
74struct perf_evsel *
75perf_evlist__find_tracepoint_by_id(struct perf_evlist *evlist, int id);
76
77struct perf_evsel *
78perf_evlist__find_tracepoint_by_name(struct perf_evlist *evlist,
79				     const char *name);
80
81void perf_evlist__id_add(struct perf_evlist *evlist, struct perf_evsel *evsel,
82			 int cpu, int thread, u64 id);
83
84void perf_evlist__add_pollfd(struct perf_evlist *evlist, int fd);
85
86struct perf_evsel *perf_evlist__id2evsel(struct perf_evlist *evlist, u64 id);
87
88struct perf_sample_id *perf_evlist__id2sid(struct perf_evlist *evlist, u64 id);
89
90union perf_event *perf_evlist__mmap_read(struct perf_evlist *self, int idx);
91
92void perf_evlist__mmap_consume(struct perf_evlist *evlist, int idx);
93
94int perf_evlist__open(struct perf_evlist *evlist);
95void perf_evlist__close(struct perf_evlist *evlist);
96
97void perf_evlist__set_id_pos(struct perf_evlist *evlist);
98bool perf_can_sample_identifier(void);
99void perf_evlist__config(struct perf_evlist *evlist,
100			 struct perf_record_opts *opts);
101
102int perf_evlist__prepare_workload(struct perf_evlist *evlist,
103				  struct perf_target *target,
104				  const char *argv[], bool pipe_output,
105				  bool want_signal);
106int perf_evlist__start_workload(struct perf_evlist *evlist);
107
108int perf_evlist__mmap(struct perf_evlist *evlist, unsigned int pages,
109		      bool overwrite);
110void perf_evlist__munmap(struct perf_evlist *evlist);
111
112void perf_evlist__disable(struct perf_evlist *evlist);
113void perf_evlist__enable(struct perf_evlist *evlist);
114
115int perf_evlist__disable_event(struct perf_evlist *evlist,
116			       struct perf_evsel *evsel);
117int perf_evlist__enable_event(struct perf_evlist *evlist,
118			      struct perf_evsel *evsel);
119
120void perf_evlist__set_selected(struct perf_evlist *evlist,
121			       struct perf_evsel *evsel);
122
123static inline void perf_evlist__set_maps(struct perf_evlist *evlist,
124					 struct cpu_map *cpus,
125					 struct thread_map *threads)
126{
127	evlist->cpus	= cpus;
128	evlist->threads	= threads;
129}
130
131int perf_evlist__create_maps(struct perf_evlist *evlist,
132			     struct perf_target *target);
133void perf_evlist__delete_maps(struct perf_evlist *evlist);
134int perf_evlist__apply_filters(struct perf_evlist *evlist);
135
136void __perf_evlist__set_leader(struct list_head *list);
137void perf_evlist__set_leader(struct perf_evlist *evlist);
138
139u64 perf_evlist__read_format(struct perf_evlist *evlist);
140u64 __perf_evlist__combined_sample_type(struct perf_evlist *evlist);
141u64 perf_evlist__combined_sample_type(struct perf_evlist *evlist);
142bool perf_evlist__sample_id_all(struct perf_evlist *evlist);
143u16 perf_evlist__id_hdr_size(struct perf_evlist *evlist);
144
145int perf_evlist__parse_sample(struct perf_evlist *evlist, union perf_event *event,
146			      struct perf_sample *sample);
147
148bool perf_evlist__valid_sample_type(struct perf_evlist *evlist);
149bool perf_evlist__valid_sample_id_all(struct perf_evlist *evlist);
150bool perf_evlist__valid_read_format(struct perf_evlist *evlist);
151
152void perf_evlist__splice_list_tail(struct perf_evlist *evlist,
153				   struct list_head *list,
154				   int nr_entries);
155
156static inline struct perf_evsel *perf_evlist__first(struct perf_evlist *evlist)
157{
158	return list_entry(evlist->entries.next, struct perf_evsel, node);
159}
160
161static inline struct perf_evsel *perf_evlist__last(struct perf_evlist *evlist)
162{
163	return list_entry(evlist->entries.prev, struct perf_evsel, node);
164}
165
166size_t perf_evlist__fprintf(struct perf_evlist *evlist, FILE *fp);
167
168static inline unsigned int perf_mmap__read_head(struct perf_mmap *mm)
169{
170	struct perf_event_mmap_page *pc = mm->base;
171	int head = pc->data_head;
172	rmb();
173	return head;
174}
175
176static inline void perf_mmap__write_tail(struct perf_mmap *md,
177					 unsigned long tail)
178{
179	struct perf_event_mmap_page *pc = md->base;
180
181	/*
182	 * ensure all reads are done before we write the tail out.
183	 */
184	/* mb(); */
185	pc->data_tail = tail;
186}
187
188#endif /* __PERF_EVLIST_H */
189