Commit | Line | Data |
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d3b59a38 JO |
1 | #include "thread_map.h" |
2 | #include "evsel.h" | |
3 | #include "debug.h" | |
4 | #include "tests.h" | |
5 | ||
6 | int test__open_syscall_event(void) | |
7 | { | |
8 | int err = -1, fd; | |
d3b59a38 | 9 | struct perf_evsel *evsel; |
d3b59a38 | 10 | unsigned int nr_open_calls = 111, i; |
a60d7953 | 11 | struct thread_map *threads = thread_map__new(-1, getpid(), UINT_MAX); |
ba3dfff8 | 12 | char sbuf[STRERR_BUFSIZE]; |
d3b59a38 | 13 | |
d3b59a38 JO |
14 | if (threads == NULL) { |
15 | pr_debug("thread_map__new\n"); | |
16 | return -1; | |
17 | } | |
18 | ||
ef503831 | 19 | evsel = perf_evsel__newtp("syscalls", "sys_enter_open"); |
d3b59a38 | 20 | if (evsel == NULL) { |
23773ca1 SRRH |
21 | if (tracefs_configured()) |
22 | pr_debug("is tracefs mounted on /sys/kernel/tracing?\n"); | |
23 | else if (debugfs_configured()) | |
24 | pr_debug("is debugfs mounted on /sys/kernel/debug?\n"); | |
25 | else | |
26 | pr_debug("Neither tracefs or debugfs is enabled in this kernel\n"); | |
d3b59a38 JO |
27 | goto out_thread_map_delete; |
28 | } | |
29 | ||
30 | if (perf_evsel__open_per_thread(evsel, threads) < 0) { | |
31 | pr_debug("failed to open counter: %s, " | |
32 | "tweak /proc/sys/kernel/perf_event_paranoid?\n", | |
ba3dfff8 | 33 | strerror_r(errno, sbuf, sizeof(sbuf))); |
d3b59a38 JO |
34 | goto out_evsel_delete; |
35 | } | |
36 | ||
37 | for (i = 0; i < nr_open_calls; ++i) { | |
38 | fd = open("/etc/passwd", O_RDONLY); | |
39 | close(fd); | |
40 | } | |
41 | ||
42 | if (perf_evsel__read_on_cpu(evsel, 0, 0) < 0) { | |
43 | pr_debug("perf_evsel__read_on_cpu\n"); | |
44 | goto out_close_fd; | |
45 | } | |
46 | ||
47 | if (evsel->counts->cpu[0].val != nr_open_calls) { | |
48 | pr_debug("perf_evsel__read_on_cpu: expected to intercept %d calls, got %" PRIu64 "\n", | |
49 | nr_open_calls, evsel->counts->cpu[0].val); | |
50 | goto out_close_fd; | |
51 | } | |
52 | ||
53 | err = 0; | |
54 | out_close_fd: | |
55 | perf_evsel__close_fd(evsel, 1, threads->nr); | |
56 | out_evsel_delete: | |
57 | perf_evsel__delete(evsel); | |
58 | out_thread_map_delete: | |
59 | thread_map__delete(threads); | |
60 | return err; | |
61 | } |