1// SPDX-License-Identifier: GPL-2.0
2#define _GNU_SOURCE
3#include <linux/membarrier.h>
4#include <syscall.h>
5#include <stdio.h>
6#include <errno.h>
7#include <string.h>
8#include <pthread.h>
9
10#include "membarrier_test_impl.h"
11
12static int thread_ready, thread_quit;
13static pthread_mutex_t test_membarrier_thread_mutex =
14	PTHREAD_MUTEX_INITIALIZER;
15static pthread_cond_t test_membarrier_thread_cond =
16	PTHREAD_COND_INITIALIZER;
17
18void *test_membarrier_thread(void *arg)
19{
20	pthread_mutex_lock(&test_membarrier_thread_mutex);
21	thread_ready = 1;
22	pthread_cond_broadcast(&test_membarrier_thread_cond);
23	pthread_mutex_unlock(&test_membarrier_thread_mutex);
24
25	pthread_mutex_lock(&test_membarrier_thread_mutex);
26	while (!thread_quit)
27		pthread_cond_wait(&test_membarrier_thread_cond,
28				  &test_membarrier_thread_mutex);
29	pthread_mutex_unlock(&test_membarrier_thread_mutex);
30
31	return NULL;
32}
33
34static int test_mt_membarrier(void)
35{
36	int i;
37	pthread_t test_thread;
38
39	pthread_create(&test_thread, NULL,
40		       test_membarrier_thread, NULL);
41
42	pthread_mutex_lock(&test_membarrier_thread_mutex);
43	while (!thread_ready)
44		pthread_cond_wait(&test_membarrier_thread_cond,
45				  &test_membarrier_thread_mutex);
46	pthread_mutex_unlock(&test_membarrier_thread_mutex);
47
48	test_membarrier_fail();
49
50	test_membarrier_success();
51
52	pthread_mutex_lock(&test_membarrier_thread_mutex);
53	thread_quit = 1;
54	pthread_cond_broadcast(&test_membarrier_thread_cond);
55	pthread_mutex_unlock(&test_membarrier_thread_mutex);
56
57	pthread_join(test_thread, NULL);
58
59	return 0;
60}
61
62int main(int argc, char **argv)
63{
64	ksft_print_header();
65	ksft_set_plan(16);
66
67	test_membarrier_query();
68
69	/* Multi-threaded */
70	test_mt_membarrier();
71
72	return ksft_exit_pass();
73}
74