1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3  * Copyright 2015, Michael Neuling, IBM Corp.
4  *
5  * Edited: Rashmica Gupta, Nov 2015
6  *
7  * This test does a fork syscall inside a transaction. Basic sniff test
8  * to see if we can enter the kernel during a transaction.
9  */
10 
11 #include <errno.h>
12 #include <inttypes.h>
13 #include <pthread.h>
14 #include <stdio.h>
15 #include <stdlib.h>
16 #include <unistd.h>
17 
18 #include "utils.h"
19 #include "tm.h"
20 
21 int test_fork(void)
22 {
23 	SKIP_IF(!have_htm());
24 	SKIP_IF(htm_is_synthetic());
25 
26 	asm __volatile__(
27 		"tbegin.;"
28 		"blt    1f; "
29 		"li     0, 2;"  /* fork syscall */
30 		"sc  ;"
31 		"tend.;"
32 		"1: ;"
33 		: : : "memory", "r0");
34 	/* If we reach here, we've passed.  Otherwise we've probably crashed
35 	 * the kernel */
36 
37 	return 0;
38 }
39 
40 int main(int argc, char *argv[])
41 {
42 	return test_harness(test_fork, "tm_fork");
43 }
44