1 | // SPDX-License-Identifier: GPL-2.0 |
2 | #include <signal.h> |
3 | #include <stdlib.h> |
4 | |
5 | #include "tests.h" |
6 | #include "debug.h" |
7 | #include "perf-hooks.h" |
8 | |
9 | static void sigsegv_handler(int sig __maybe_unused) |
10 | { |
11 | pr_debug("SIGSEGV is observed as expected, try to recover.\n" ); |
12 | perf_hooks__recover(); |
13 | signal(SIGSEGV, SIG_DFL); |
14 | raise(SIGSEGV); |
15 | exit(-1); |
16 | } |
17 | |
18 | |
19 | static void the_hook(void *_hook_flags) |
20 | { |
21 | int *hook_flags = _hook_flags; |
22 | |
23 | *hook_flags = 1234; |
24 | |
25 | /* Generate a segfault, test perf_hooks__recover */ |
26 | raise(SIGSEGV); |
27 | } |
28 | |
29 | static int test__perf_hooks(struct test_suite *test __maybe_unused, int subtest __maybe_unused) |
30 | { |
31 | int hook_flags = 0; |
32 | |
33 | signal(SIGSEGV, sigsegv_handler); |
34 | perf_hooks__set_hook("test" , the_hook, &hook_flags); |
35 | perf_hooks__invoke_test(); |
36 | |
37 | /* hook is triggered? */ |
38 | if (hook_flags != 1234) { |
39 | pr_debug("Setting failed: %d (%p)\n" , hook_flags, &hook_flags); |
40 | return TEST_FAIL; |
41 | } |
42 | |
43 | /* the buggy hook is removed? */ |
44 | if (perf_hooks__get_hook("test" )) |
45 | return TEST_FAIL; |
46 | return TEST_OK; |
47 | } |
48 | |
49 | DEFINE_SUITE("perf hooks" , perf_hooks); |
50 | |