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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  
12  struct pollfd;
13  struct thread_map;
14  struct cpu_map;
15  struct perf_record_opts;
16  
17  #define PERF_EVLIST__HLIST_BITS 8
18  #define PERF_EVLIST__HLIST_SIZE (1 << PERF_EVLIST__HLIST_BITS)
19  
20  struct perf_mmap {
21  	void		 *base;
22  	int		 mask;
23  	unsigned int	 prev;
24  	union perf_event event_copy;
25  };
26  
27  struct 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  
50  struct perf_evsel_str_handler {
51  	const char *name;
52  	void	   *handler;
53  };
54  
55  struct perf_evlist *perf_evlist__new(void);
56  void perf_evlist__init(struct perf_evlist *evlist, struct cpu_map *cpus,
57  		       struct thread_map *threads);
58  void perf_evlist__exit(struct perf_evlist *evlist);
59  void perf_evlist__delete(struct perf_evlist *evlist);
60  
61  void perf_evlist__add(struct perf_evlist *evlist, struct perf_evsel *entry);
62  int perf_evlist__add_default(struct perf_evlist *evlist);
63  int __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  
69  int perf_evlist__add_newtp(struct perf_evlist *evlist,
70  			   const char *sys, const char *name, void *handler);
71  
72  int perf_evlist__set_filter(struct perf_evlist *evlist, const char *filter);
73  
74  struct perf_evsel *
75  perf_evlist__find_tracepoint_by_id(struct perf_evlist *evlist, int id);
76  
77  struct perf_evsel *
78  perf_evlist__find_tracepoint_by_name(struct perf_evlist *evlist,
79  				     const char *name);
80  
81  void perf_evlist__id_add(struct perf_evlist *evlist, struct perf_evsel *evsel,
82  			 int cpu, int thread, u64 id);
83  
84  void perf_evlist__add_pollfd(struct perf_evlist *evlist, int fd);
85  
86  struct perf_evsel *perf_evlist__id2evsel(struct perf_evlist *evlist, u64 id);
87  
88  struct perf_sample_id *perf_evlist__id2sid(struct perf_evlist *evlist, u64 id);
89  
90  union perf_event *perf_evlist__mmap_read(struct perf_evlist *self, int idx);
91  
92  void perf_evlist__mmap_consume(struct perf_evlist *evlist, int idx);
93  
94  int perf_evlist__open(struct perf_evlist *evlist);
95  void perf_evlist__close(struct perf_evlist *evlist);
96  
97  void perf_evlist__set_id_pos(struct perf_evlist *evlist);
98  bool perf_can_sample_identifier(void);
99  void perf_evlist__config(struct perf_evlist *evlist,
100  			 struct perf_record_opts *opts);
101  
102  int perf_evlist__prepare_workload(struct perf_evlist *evlist,
103  				  struct perf_target *target,
104  				  const char *argv[], bool pipe_output,
105  				  bool want_signal);
106  int perf_evlist__start_workload(struct perf_evlist *evlist);
107  
108  int perf_evlist__mmap(struct perf_evlist *evlist, unsigned int pages,
109  		      bool overwrite);
110  void perf_evlist__munmap(struct perf_evlist *evlist);
111  
112  void perf_evlist__disable(struct perf_evlist *evlist);
113  void perf_evlist__enable(struct perf_evlist *evlist);
114  
115  int perf_evlist__disable_event(struct perf_evlist *evlist,
116  			       struct perf_evsel *evsel);
117  int perf_evlist__enable_event(struct perf_evlist *evlist,
118  			      struct perf_evsel *evsel);
119  
120  void perf_evlist__set_selected(struct perf_evlist *evlist,
121  			       struct perf_evsel *evsel);
122  
perf_evlist__set_maps(struct perf_evlist * evlist,struct cpu_map * cpus,struct thread_map * threads)123  static 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  
131  int perf_evlist__create_maps(struct perf_evlist *evlist,
132  			     struct perf_target *target);
133  void perf_evlist__delete_maps(struct perf_evlist *evlist);
134  int perf_evlist__apply_filters(struct perf_evlist *evlist);
135  
136  void __perf_evlist__set_leader(struct list_head *list);
137  void perf_evlist__set_leader(struct perf_evlist *evlist);
138  
139  u64 perf_evlist__read_format(struct perf_evlist *evlist);
140  u64 __perf_evlist__combined_sample_type(struct perf_evlist *evlist);
141  u64 perf_evlist__combined_sample_type(struct perf_evlist *evlist);
142  bool perf_evlist__sample_id_all(struct perf_evlist *evlist);
143  u16 perf_evlist__id_hdr_size(struct perf_evlist *evlist);
144  
145  int perf_evlist__parse_sample(struct perf_evlist *evlist, union perf_event *event,
146  			      struct perf_sample *sample);
147  
148  bool perf_evlist__valid_sample_type(struct perf_evlist *evlist);
149  bool perf_evlist__valid_sample_id_all(struct perf_evlist *evlist);
150  bool perf_evlist__valid_read_format(struct perf_evlist *evlist);
151  
152  void perf_evlist__splice_list_tail(struct perf_evlist *evlist,
153  				   struct list_head *list,
154  				   int nr_entries);
155  
perf_evlist__first(struct perf_evlist * evlist)156  static 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  
perf_evlist__last(struct perf_evlist * evlist)161  static 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  
166  size_t perf_evlist__fprintf(struct perf_evlist *evlist, FILE *fp);
167  
perf_mmap__read_head(struct perf_mmap * mm)168  static 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  
perf_mmap__write_tail(struct perf_mmap * md,unsigned long tail)176  static 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