xref: /openbmc/linux/tools/perf/util/ordered-events.h (revision ac8b6f14)
1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef __ORDERED_EVENTS_H
3 #define __ORDERED_EVENTS_H
4 
5 #include <linux/types.h>
6 
7 struct perf_sample;
8 
9 struct ordered_event {
10 	u64			timestamp;
11 	u64			file_offset;
12 	union perf_event	*event;
13 	struct list_head	list;
14 };
15 
16 enum oe_flush {
17 	OE_FLUSH__NONE,
18 	OE_FLUSH__FINAL,
19 	OE_FLUSH__ROUND,
20 	OE_FLUSH__HALF,
21 };
22 
23 struct ordered_events;
24 
25 typedef int (*ordered_events__deliver_t)(struct ordered_events *oe,
26 					 struct ordered_event *event);
27 
28 struct ordered_events_buffer {
29 	struct list_head	list;
30 	struct ordered_event	event[0];
31 };
32 
33 struct ordered_events {
34 	u64				 last_flush;
35 	u64				 next_flush;
36 	u64				 max_timestamp;
37 	u64				 max_alloc_size;
38 	u64				 cur_alloc_size;
39 	struct list_head		 events;
40 	struct list_head		 cache;
41 	struct list_head		 to_free;
42 	struct ordered_events_buffer	*buffer;
43 	struct ordered_event		*last;
44 	ordered_events__deliver_t	 deliver;
45 	int				 buffer_idx;
46 	unsigned int			 nr_events;
47 	enum oe_flush			 last_flush_type;
48 	u32				 nr_unordered_events;
49 	bool				 copy_on_queue;
50 };
51 
52 int ordered_events__queue(struct ordered_events *oe, union perf_event *event,
53 			  u64 timestamp, u64 file_offset);
54 void ordered_events__delete(struct ordered_events *oe, struct ordered_event *event);
55 int ordered_events__flush(struct ordered_events *oe, enum oe_flush how);
56 void ordered_events__init(struct ordered_events *oe, ordered_events__deliver_t deliver);
57 void ordered_events__free(struct ordered_events *oe);
58 void ordered_events__reinit(struct ordered_events *oe);
59 
60 static inline
61 void ordered_events__set_alloc_size(struct ordered_events *oe, u64 size)
62 {
63 	oe->max_alloc_size = size;
64 }
65 
66 static inline
67 void ordered_events__set_copy_on_queue(struct ordered_events *oe, bool copy)
68 {
69 	oe->copy_on_queue = copy;
70 }
71 #endif /* __ORDERED_EVENTS_H */
72