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