1 /* SPDX-License-Identifier: GPL-2.0 */
2 #include <pthread.h>
3 #include <stdlib.h>
4 #include <signal.h>
5 #include <unistd.h>
6 #include <linux/compiler.h>
7 #include "../tests.h"
8
9 static volatile sig_atomic_t done;
10
11 /* We want to check this symbol in perf report */
12 noinline void test_loop(void);
13
14 static void sighandler(int sig __maybe_unused)
15 {
16 done = 1;
17 }
18
19 noinline void test_loop(void)
20 {
21 while (!done);
22 }
23
24 static void *thfunc(void *arg)
25 {
26 void (*loop_fn)(void) = arg;
27
28 loop_fn();
29 return NULL;
30 }
31
32 static int thloop(int argc, const char **argv)
33 {
34 int sec = 1;
35 pthread_t th;
36
37 if (argc > 0)
38 sec = atoi(argv[0]);
39
40 signal(SIGINT, sighandler);
41 signal(SIGALRM, sighandler);
42 alarm(sec);
43
44 pthread_create(&th, NULL, thfunc, test_loop);
45 test_loop();
46 pthread_join(th, NULL);
47
48 return 0;
49 }
50
51 DEFINE_WORKLOAD(thloop);
52
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