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
 9static volatile sig_atomic_t done;
10static volatile unsigned count;
11
12/* We want to check this symbol in perf report */
13noinline void test_loop(void);
14
15static void sighandler(int sig __maybe_unused)
16{
17	done = 1;
18}
19
20noinline void test_loop(void)
21{
22	while (!done)
23		count++;
24}
25
26static void *thfunc(void *arg)
27{
28	void (*loop_fn)(void) = arg;
29
30	loop_fn();
31	return NULL;
32}
33
34static int thloop(int argc, const char **argv)
35{
36	int sec = 1;
37	pthread_t th;
38
39	if (argc > 0)
40		sec = atoi(argv[0]);
41
42	signal(SIGINT, sighandler);
43	signal(SIGALRM, sighandler);
44	alarm(sec);
45
46	pthread_create(&th, NULL, thfunc, test_loop);
47	test_loop();
48	pthread_join(th, NULL);
49
50	return 0;
51}
52
53DEFINE_WORKLOAD(thloop);