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