1#include <linux/kernel.h>
2#include <linux/types.h>
3#include <stddef.h>
4
5#include "tests.h"
6
7#include "event.h"
8#include "evlist.h"
9#include "header.h"
10#include "debug.h"
11#include "util/sample.h"
12
13static int process_event(struct evlist **pevlist, union perf_event *event)
14{
15	struct perf_sample sample;
16
17	if (event->header.type == PERF_RECORD_HEADER_ATTR) {
18		if (perf_event__process_attr(NULL, event, pevlist)) {
19			pr_debug("perf_event__process_attr failed\n");
20			return -1;
21		}
22		return 0;
23	}
24
25	if (event->header.type >= PERF_RECORD_USER_TYPE_START)
26		return -1;
27
28	if (!*pevlist)
29		return -1;
30
31	if (evlist__parse_sample(*pevlist, event, &sample)) {
32		pr_debug("evlist__parse_sample failed\n");
33		return -1;
34	}
35
36	return 0;
37}
38
39static int process_events(union perf_event **events, size_t count)
40{
41	struct evlist *evlist = NULL;
42	int err = 0;
43	size_t i;
44
45	for (i = 0; i < count && !err; i++)
46		err = process_event(&evlist, events[i]);
47
48	evlist__delete(evlist);
49
50	return err;
51}
52
53struct test_attr_event {
54	struct perf_event_header header;
55	struct perf_event_attr	 attr;
56	u64 id;
57};
58
59/**
60 * test__parse_no_sample_id_all - test parsing with no sample_id_all bit set.
61 *
62 * This function tests parsing data produced on kernel's that do not support the
63 * sample_id_all bit.  Without the sample_id_all bit, non-sample events (such as
64 * mmap events) do not have an id sample appended, and consequently logic
65 * designed to determine the id will not work.  That case happens when there is
66 * more than one selected event, so this test processes three events: 2
67 * attributes representing the selected events and one mmap event.
68 *
69 * Return: %0 on success, %-1 if the test fails.
70 */
71static int test__parse_no_sample_id_all(struct test_suite *test __maybe_unused,
72					int subtest __maybe_unused)
73{
74	int err;
75
76	struct test_attr_event event1 = {
77		.header = {
78			.type = PERF_RECORD_HEADER_ATTR,
79			.size = sizeof(struct test_attr_event),
80		},
81		.id = 1,
82	};
83	struct test_attr_event event2 = {
84		.header = {
85			.type = PERF_RECORD_HEADER_ATTR,
86			.size = sizeof(struct test_attr_event),
87		},
88		.id = 2,
89	};
90	struct perf_record_mmap event3 = {
91		.header = {
92			.type = PERF_RECORD_MMAP,
93			.size = sizeof(struct perf_record_mmap),
94		},
95	};
96	union perf_event *events[] = {
97		(union perf_event *)&event1,
98		(union perf_event *)&event2,
99		(union perf_event *)&event3,
100	};
101
102	err = process_events(events, ARRAY_SIZE(events));
103	if (err)
104		return -1;
105
106	return 0;
107}
108
109DEFINE_SUITE("Parse with no sample_id_all bit set", parse_no_sample_id_all);
110