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Linux kernel mirror (for testing)
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1/* SPDX-License-Identifier: GPL-2.0 */
2#ifndef __ORDERED_EVENTS_H
3#define __ORDERED_EVENTS_H
4
5#include <linux/types.h>
6
7struct perf_sample;
8
9struct ordered_event {
10 u64 timestamp;
11 u64 file_offset;
12 union perf_event *event;
13 struct list_head list;
14};
15
16enum oe_flush {
17 OE_FLUSH__NONE,
18 OE_FLUSH__FINAL,
19 OE_FLUSH__ROUND,
20 OE_FLUSH__HALF,
21};
22
23struct ordered_events;
24
25typedef int (*ordered_events__deliver_t)(struct ordered_events *oe,
26 struct ordered_event *event);
27
28struct 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
47int ordered_events__queue(struct ordered_events *oe, union perf_event *event,
48 u64 timestamp, u64 file_offset);
49void ordered_events__delete(struct ordered_events *oe, struct ordered_event *event);
50int ordered_events__flush(struct ordered_events *oe, enum oe_flush how);
51void ordered_events__init(struct ordered_events *oe, ordered_events__deliver_t deliver);
52void ordered_events__free(struct ordered_events *oe);
53void ordered_events__reinit(struct ordered_events *oe);
54
55static inline
56void ordered_events__set_alloc_size(struct ordered_events *oe, u64 size)
57{
58 oe->max_alloc_size = size;
59}
60
61static inline
62void 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 */