44 lines
826 B
C
44 lines
826 B
C
|
// SPDX-License-Identifier: GPL-2.0-only
|
||
|
|
/*
|
||
|
|
* Copyright 2015, Michael Neuling, IBM Corp.
|
||
|
|
*
|
||
|
|
* Edited: Rashmica Gupta, Nov 2015
|
||
|
|
*
|
||
|
|
* This test does a fork syscall inside a transaction. Basic sniff test
|
||
|
|
* to see if we can enter the kernel during a transaction.
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include <errno.h>
|
||
|
|
#include <inttypes.h>
|
||
|
|
#include <pthread.h>
|
||
|
|
#include <stdio.h>
|
||
|
|
#include <stdlib.h>
|
||
|
|
#include <unistd.h>
|
||
|
|
|
||
|
|
#include "utils.h"
|
||
|
|
#include "tm.h"
|
||
|
|
|
||
|
|
int test_fork(void)
|
||
|
|
{
|
||
|
|
SKIP_IF(!have_htm());
|
||
|
|
SKIP_IF(htm_is_synthetic());
|
||
|
|
|
||
|
|
asm __volatile__(
|
||
|
|
"tbegin.;"
|
||
|
|
"blt 1f; "
|
||
|
|
"li 0, 2;" /* fork syscall */
|
||
|
|
"sc ;"
|
||
|
|
"tend.;"
|
||
|
|
"1: ;"
|
||
|
|
: : : "memory", "r0");
|
||
|
|
/* If we reach here, we've passed. Otherwise we've probably crashed
|
||
|
|
* the kernel */
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
int main(int argc, char *argv[])
|
||
|
|
{
|
||
|
|
return test_harness(test_fork, "tm_fork");
|
||
|
|
}
|