1*4882a593Smuzhiyun // SPDX-License-Identifier: GPL-2.0
2*4882a593Smuzhiyun #include <signal.h>
3*4882a593Smuzhiyun #include <stdlib.h>
4*4882a593Smuzhiyun
5*4882a593Smuzhiyun #include "tests.h"
6*4882a593Smuzhiyun #include "debug.h"
7*4882a593Smuzhiyun #include "perf-hooks.h"
8*4882a593Smuzhiyun
sigsegv_handler(int sig __maybe_unused)9*4882a593Smuzhiyun static void sigsegv_handler(int sig __maybe_unused)
10*4882a593Smuzhiyun {
11*4882a593Smuzhiyun pr_debug("SIGSEGV is observed as expected, try to recover.\n");
12*4882a593Smuzhiyun perf_hooks__recover();
13*4882a593Smuzhiyun signal(SIGSEGV, SIG_DFL);
14*4882a593Smuzhiyun raise(SIGSEGV);
15*4882a593Smuzhiyun exit(-1);
16*4882a593Smuzhiyun }
17*4882a593Smuzhiyun
18*4882a593Smuzhiyun
the_hook(void * _hook_flags)19*4882a593Smuzhiyun static void the_hook(void *_hook_flags)
20*4882a593Smuzhiyun {
21*4882a593Smuzhiyun int *hook_flags = _hook_flags;
22*4882a593Smuzhiyun
23*4882a593Smuzhiyun *hook_flags = 1234;
24*4882a593Smuzhiyun
25*4882a593Smuzhiyun /* Generate a segfault, test perf_hooks__recover */
26*4882a593Smuzhiyun raise(SIGSEGV);
27*4882a593Smuzhiyun }
28*4882a593Smuzhiyun
test__perf_hooks(struct test * test __maybe_unused,int subtest __maybe_unused)29*4882a593Smuzhiyun int test__perf_hooks(struct test *test __maybe_unused, int subtest __maybe_unused)
30*4882a593Smuzhiyun {
31*4882a593Smuzhiyun int hook_flags = 0;
32*4882a593Smuzhiyun
33*4882a593Smuzhiyun signal(SIGSEGV, sigsegv_handler);
34*4882a593Smuzhiyun perf_hooks__set_hook("test", the_hook, &hook_flags);
35*4882a593Smuzhiyun perf_hooks__invoke_test();
36*4882a593Smuzhiyun
37*4882a593Smuzhiyun /* hook is triggered? */
38*4882a593Smuzhiyun if (hook_flags != 1234) {
39*4882a593Smuzhiyun pr_debug("Setting failed: %d (%p)\n", hook_flags, &hook_flags);
40*4882a593Smuzhiyun return TEST_FAIL;
41*4882a593Smuzhiyun }
42*4882a593Smuzhiyun
43*4882a593Smuzhiyun /* the buggy hook is removed? */
44*4882a593Smuzhiyun if (perf_hooks__get_hook("test"))
45*4882a593Smuzhiyun return TEST_FAIL;
46*4882a593Smuzhiyun return TEST_OK;
47*4882a593Smuzhiyun }
48