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1 #ifndef __ORDERED_EVENTS_H
2 #define __ORDERED_EVENTS_H
3 
4 #include <linux/types.h>
5 
6 struct perf_sample;
7 
8 struct ordered_event {
9 	u64			timestamp;
10 	u64			file_offset;
11 	union perf_event	*event;
12 	struct list_head	list;
13 };
14 
15 enum oe_flush {
16 	OE_FLUSH__NONE,
17 	OE_FLUSH__FINAL,
18 	OE_FLUSH__ROUND,
19 	OE_FLUSH__HALF,
20 };
21 
22 struct ordered_events;
23 
24 typedef int (*ordered_events__deliver_t)(struct ordered_events *oe,
25 					 struct ordered_event *event);
26 
27 struct ordered_events {
28 	u64			last_flush;
29 	u64			next_flush;
30 	u64			max_timestamp;
31 	u64			max_alloc_size;
32 	u64			cur_alloc_size;
33 	struct list_head	events;
34 	struct list_head	cache;
35 	struct list_head	to_free;
36 	struct ordered_event	*buffer;
37 	struct ordered_event	*last;
38 	ordered_events__deliver_t deliver;
39 	int			buffer_idx;
40 	unsigned int		nr_events;
41 	enum oe_flush		last_flush_type;
42 	u32			nr_unordered_events;
43 	bool                    copy_on_queue;
44 };
45 
46 int ordered_events__queue(struct ordered_events *oe, union perf_event *event,
47 			  struct perf_sample *sample, u64 file_offset);
48 void ordered_events__delete(struct ordered_events *oe, struct ordered_event *event);
49 int ordered_events__flush(struct ordered_events *oe, enum oe_flush how);
50 void ordered_events__init(struct ordered_events *oe, ordered_events__deliver_t deliver);
51 void ordered_events__free(struct ordered_events *oe);
52 
53 static inline
ordered_events__set_alloc_size(struct ordered_events * oe,u64 size)54 void ordered_events__set_alloc_size(struct ordered_events *oe, u64 size)
55 {
56 	oe->max_alloc_size = size;
57 }
58 
59 static inline
ordered_events__set_copy_on_queue(struct ordered_events * oe,bool copy)60 void ordered_events__set_copy_on_queue(struct ordered_events *oe, bool copy)
61 {
62 	oe->copy_on_queue = copy;
63 }
64 #endif /* __ORDERED_EVENTS_H */
65