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1// SPDX-License-Identifier: GPL-2.0-only2/*3 * Copyright 2015, Michael Neuling, IBM Corp.4 *5 * Edited: Rashmica Gupta, Nov 20156 *7 * This test does a fork syscall inside a transaction. Basic sniff test8 * 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 21int 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 crashed35 * the kernel */36 37 return 0;38}39 40int main(int argc, char *argv[])41{42 return test_harness(test_fork, "tm_fork");43}44