noploop.c

 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;
10
11static void sighandler(int sig __maybe_unused)
12{
13	done = 1;
14}
15
16static int noploop(int argc, const char **argv)
17{
18	int sec = 1;
19
20	pthread_setname_np(pthread_self(), "perf-noploop");
21	if (argc > 0)
22		sec = atoi(argv[0]);
23
24	signal(SIGINT, sighandler);
25	signal(SIGALRM, sighandler);
26	alarm(sec);
27
28	while (!done)
29		continue;
30
31	return 0;
32}
33
34DEFINE_WORKLOAD(noploop);