mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-09-06 02:50:43 +00:00
d74f87f376
Keep track of previously issued registrations and compare the result with MEMBARRIER_CMD_GET_REGISTRATIONS return value. Signed-off-by: Michal Clapinski <mclapinski@google.com> Signed-off-by: Ingo Molnar <mingo@kernel.org> Acked-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com> Acked-by: Paul E. McKenney <paulmck@kernel.org> Link: https://lore.kernel.org/r/20221207164338.1535591-3-mclapinski@google.com
73 lines
1.7 KiB
C
73 lines
1.7 KiB
C
// SPDX-License-Identifier: GPL-2.0
|
|
#define _GNU_SOURCE
|
|
#include <linux/membarrier.h>
|
|
#include <syscall.h>
|
|
#include <stdio.h>
|
|
#include <errno.h>
|
|
#include <string.h>
|
|
#include <pthread.h>
|
|
|
|
#include "membarrier_test_impl.h"
|
|
|
|
static int thread_ready, thread_quit;
|
|
static pthread_mutex_t test_membarrier_thread_mutex =
|
|
PTHREAD_MUTEX_INITIALIZER;
|
|
static pthread_cond_t test_membarrier_thread_cond =
|
|
PTHREAD_COND_INITIALIZER;
|
|
|
|
void *test_membarrier_thread(void *arg)
|
|
{
|
|
pthread_mutex_lock(&test_membarrier_thread_mutex);
|
|
thread_ready = 1;
|
|
pthread_cond_broadcast(&test_membarrier_thread_cond);
|
|
pthread_mutex_unlock(&test_membarrier_thread_mutex);
|
|
|
|
pthread_mutex_lock(&test_membarrier_thread_mutex);
|
|
while (!thread_quit)
|
|
pthread_cond_wait(&test_membarrier_thread_cond,
|
|
&test_membarrier_thread_mutex);
|
|
pthread_mutex_unlock(&test_membarrier_thread_mutex);
|
|
|
|
return NULL;
|
|
}
|
|
|
|
static int test_mt_membarrier(void)
|
|
{
|
|
int i;
|
|
pthread_t test_thread;
|
|
|
|
pthread_create(&test_thread, NULL,
|
|
test_membarrier_thread, NULL);
|
|
|
|
pthread_mutex_lock(&test_membarrier_thread_mutex);
|
|
while (!thread_ready)
|
|
pthread_cond_wait(&test_membarrier_thread_cond,
|
|
&test_membarrier_thread_mutex);
|
|
pthread_mutex_unlock(&test_membarrier_thread_mutex);
|
|
|
|
test_membarrier_fail();
|
|
|
|
test_membarrier_success();
|
|
|
|
pthread_mutex_lock(&test_membarrier_thread_mutex);
|
|
thread_quit = 1;
|
|
pthread_cond_broadcast(&test_membarrier_thread_cond);
|
|
pthread_mutex_unlock(&test_membarrier_thread_mutex);
|
|
|
|
pthread_join(test_thread, NULL);
|
|
|
|
return 0;
|
|
}
|
|
|
|
int main(int argc, char **argv)
|
|
{
|
|
ksft_print_header();
|
|
ksft_set_plan(16);
|
|
|
|
test_membarrier_query();
|
|
|
|
/* Multi-threaded */
|
|
test_mt_membarrier();
|
|
|
|
return ksft_exit_pass();
|
|
}
|