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); |
d3b59a38 | 12 | |
d3b59a38 JO |
13 | if (threads == NULL) { |
14 | pr_debug("thread_map__new\n"); | |
15 | return -1; | |
16 | } | |
17 | ||
a60d7953 | 18 | evsel = perf_evsel__newtp("syscalls", "sys_enter_open", 0); |
d3b59a38 | 19 | if (evsel == NULL) { |
a60d7953 | 20 | pr_debug("is debugfs mounted on /sys/kernel/debug?\n"); |
d3b59a38 JO |
21 | goto out_thread_map_delete; |
22 | } | |
23 | ||
24 | if (perf_evsel__open_per_thread(evsel, threads) < 0) { | |
25 | pr_debug("failed to open counter: %s, " | |
26 | "tweak /proc/sys/kernel/perf_event_paranoid?\n", | |
27 | strerror(errno)); | |
28 | goto out_evsel_delete; | |
29 | } | |
30 | ||
31 | for (i = 0; i < nr_open_calls; ++i) { | |
32 | fd = open("/etc/passwd", O_RDONLY); | |
33 | close(fd); | |
34 | } | |
35 | ||
36 | if (perf_evsel__read_on_cpu(evsel, 0, 0) < 0) { | |
37 | pr_debug("perf_evsel__read_on_cpu\n"); | |
38 | goto out_close_fd; | |
39 | } | |
40 | ||
41 | if (evsel->counts->cpu[0].val != nr_open_calls) { | |
42 | pr_debug("perf_evsel__read_on_cpu: expected to intercept %d calls, got %" PRIu64 "\n", | |
43 | nr_open_calls, evsel->counts->cpu[0].val); | |
44 | goto out_close_fd; | |
45 | } | |
46 | ||
47 | err = 0; | |
48 | out_close_fd: | |
49 | perf_evsel__close_fd(evsel, 1, threads->nr); | |
50 | out_evsel_delete: | |
51 | perf_evsel__delete(evsel); | |
52 | out_thread_map_delete: | |
53 | thread_map__delete(threads); | |
54 | return err; | |
55 | } |