1 #include "perf.h"
2 #include "evlist.h"
3 #include "evsel.h"
4 #include "thread_map.h"
5 #include "tests.h"
6
test__syscall_open_tp_fields(void)7 int test__syscall_open_tp_fields(void)
8 {
9 struct perf_record_opts opts = {
10 .target = {
11 .uid = UINT_MAX,
12 .uses_mmap = true,
13 },
14 .no_delay = true,
15 .freq = 1,
16 .mmap_pages = 256,
17 .raw_samples = true,
18 };
19 const char *filename = "/etc/passwd";
20 int flags = O_RDONLY | O_DIRECTORY;
21 struct perf_evlist *evlist = perf_evlist__new();
22 struct perf_evsel *evsel;
23 int err = -1, i, nr_events = 0, nr_polls = 0;
24
25 if (evlist == NULL) {
26 pr_debug("%s: perf_evlist__new\n", __func__);
27 goto out;
28 }
29
30 evsel = perf_evsel__newtp("syscalls", "sys_enter_open", 0);
31 if (evsel == NULL) {
32 pr_debug("%s: perf_evsel__newtp\n", __func__);
33 goto out_delete_evlist;
34 }
35
36 perf_evlist__add(evlist, evsel);
37
38 err = perf_evlist__create_maps(evlist, &opts.target);
39 if (err < 0) {
40 pr_debug("%s: perf_evlist__create_maps\n", __func__);
41 goto out_delete_evlist;
42 }
43
44 perf_evsel__config(evsel, &opts);
45
46 evlist->threads->map[0] = getpid();
47
48 err = perf_evlist__open(evlist);
49 if (err < 0) {
50 pr_debug("perf_evlist__open: %s\n", strerror(errno));
51 goto out_delete_maps;
52 }
53
54 err = perf_evlist__mmap(evlist, UINT_MAX, false);
55 if (err < 0) {
56 pr_debug("perf_evlist__mmap: %s\n", strerror(errno));
57 goto out_close_evlist;
58 }
59
60 perf_evlist__enable(evlist);
61
62 /*
63 * Generate the event:
64 */
65 open(filename, flags);
66
67 while (1) {
68 int before = nr_events;
69
70 for (i = 0; i < evlist->nr_mmaps; i++) {
71 union perf_event *event;
72
73 while ((event = perf_evlist__mmap_read(evlist, i)) != NULL) {
74 const u32 type = event->header.type;
75 int tp_flags;
76 struct perf_sample sample;
77
78 ++nr_events;
79
80 if (type != PERF_RECORD_SAMPLE) {
81 perf_evlist__mmap_consume(evlist, i);
82 continue;
83 }
84
85 err = perf_evsel__parse_sample(evsel, event, &sample);
86 if (err) {
87 pr_err("Can't parse sample, err = %d\n", err);
88 goto out_munmap;
89 }
90
91 tp_flags = perf_evsel__intval(evsel, &sample, "flags");
92
93 if (flags != tp_flags) {
94 pr_debug("%s: Expected flags=%#x, got %#x\n",
95 __func__, flags, tp_flags);
96 goto out_munmap;
97 }
98
99 goto out_ok;
100 }
101 }
102
103 if (nr_events == before)
104 poll(evlist->pollfd, evlist->nr_fds, 10);
105
106 if (++nr_polls > 5) {
107 pr_debug("%s: no events!\n", __func__);
108 goto out_munmap;
109 }
110 }
111 out_ok:
112 err = 0;
113 out_munmap:
114 perf_evlist__munmap(evlist);
115 out_close_evlist:
116 perf_evlist__close(evlist);
117 out_delete_maps:
118 perf_evlist__delete_maps(evlist);
119 out_delete_evlist:
120 perf_evlist__delete(evlist);
121 out:
122 return err;
123 }
124