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 const char *file_path;
13 union perf_event *event;
14 struct list_head list;
15 };
16
17 enum oe_flush {
18 OE_FLUSH__NONE,
19 OE_FLUSH__FINAL,
20 OE_FLUSH__ROUND,
21 OE_FLUSH__HALF,
22 OE_FLUSH__TOP,
23 OE_FLUSH__TIME,
24 };
25
26 struct ordered_events;
27
28 typedef int (*ordered_events__deliver_t)(struct ordered_events *oe,
29 struct ordered_event *event);
30
31 struct ordered_events_buffer {
32 struct list_head list;
33 struct ordered_event event[];
34 };
35
36 struct ordered_events {
37 u64 last_flush;
38 u64 next_flush;
39 u64 max_timestamp;
40 u64 max_alloc_size;
41 u64 cur_alloc_size;
42 struct list_head events;
43 struct list_head cache;
44 struct list_head to_free;
45 struct ordered_events_buffer *buffer;
46 struct ordered_event *last;
47 ordered_events__deliver_t deliver;
48 int buffer_idx;
49 unsigned int nr_events;
50 enum oe_flush last_flush_type;
51 u32 nr_unordered_events;
52 bool copy_on_queue;
53 void *data;
54 };
55
56 int ordered_events__queue(struct ordered_events *oe, union perf_event *event,
57 u64 timestamp, u64 file_offset, const char *file_path);
58 void ordered_events__delete(struct ordered_events *oe, struct ordered_event *event);
59 int ordered_events__flush(struct ordered_events *oe, enum oe_flush how);
60 int ordered_events__flush_time(struct ordered_events *oe, u64 timestamp);
61 void ordered_events__init(struct ordered_events *oe, ordered_events__deliver_t deliver,
62 void *data);
63 void ordered_events__free(struct ordered_events *oe);
64 void ordered_events__reinit(struct ordered_events *oe);
65 u64 ordered_events__first_time(struct ordered_events *oe);
66
67 static inline
ordered_events__set_alloc_size(struct ordered_events * oe,u64 size)68 void ordered_events__set_alloc_size(struct ordered_events *oe, u64 size)
69 {
70 oe->max_alloc_size = size;
71 }
72
73 static inline
ordered_events__set_copy_on_queue(struct ordered_events * oe,bool copy)74 void ordered_events__set_copy_on_queue(struct ordered_events *oe, bool copy)
75 {
76 oe->copy_on_queue = copy;
77 }
78
ordered_events__last_flush_time(struct ordered_events * oe)79 static inline u64 ordered_events__last_flush_time(struct ordered_events *oe)
80 {
81 return oe->last_flush;
82 }
83
84 #endif /* __ORDERED_EVENTS_H */
85