xref: /openbmc/linux/tools/perf/util/ordered-events.h (revision f220d3eb)
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 {
29 	u64			last_flush;
30 	u64			next_flush;
31 	u64			max_timestamp;
32 	u64			max_alloc_size;
33 	u64			cur_alloc_size;
34 	struct list_head	events;
35 	struct list_head	cache;
36 	struct list_head	to_free;
37 	struct ordered_event	*buffer;
38 	struct ordered_event	*last;
39 	ordered_events__deliver_t deliver;
40 	int			buffer_idx;
41 	unsigned int		nr_events;
42 	enum oe_flush		last_flush_type;
43 	u32			nr_unordered_events;
44 	bool                    copy_on_queue;
45 };
46 
47 int ordered_events__queue(struct ordered_events *oe, union perf_event *event,
48 			  u64 timestamp, u64 file_offset);
49 void ordered_events__delete(struct ordered_events *oe, struct ordered_event *event);
50 int ordered_events__flush(struct ordered_events *oe, enum oe_flush how);
51 void ordered_events__init(struct ordered_events *oe, ordered_events__deliver_t deliver);
52 void ordered_events__free(struct ordered_events *oe);
53 void ordered_events__reinit(struct ordered_events *oe);
54 
55 static inline
56 void ordered_events__set_alloc_size(struct ordered_events *oe, u64 size)
57 {
58 	oe->max_alloc_size = size;
59 }
60 
61 static inline
62 void ordered_events__set_copy_on_queue(struct ordered_events *oe, bool copy)
63 {
64 	oe->copy_on_queue = copy;
65 }
66 #endif /* __ORDERED_EVENTS_H */
67