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
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