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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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a431b946db
Perform an exec() class syscall with a suspended transaction.
This is a test for the bug we fixed in 8e96a87c54 ("powerpc/tm: Always
reclaim in start_thread() for exec() class syscalls").
Signed-off-by: Cyril Bur <cyrilbur@gmail.com>
[mpe: Fix build errors, use a single binary for the test]
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
71 lines
1.4 KiB
C
71 lines
1.4 KiB
C
/*
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* Copyright 2016, Cyril Bur, IBM Corp.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version
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* 2 of the License, or (at your option) any later version.
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*
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* Syscalls can be performed provided the transactions are suspended.
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* The exec() class of syscall is unique as a new process is loaded.
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*
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* It makes little sense for after an exec() call for the previously
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* suspended transaction to still exist.
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*/
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#define _GNU_SOURCE
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#include <errno.h>
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#include <inttypes.h>
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#include <libgen.h>
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#include <pthread.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include "utils.h"
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#include "tm.h"
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static char *path;
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static int test_exec(void)
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{
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SKIP_IF(!have_htm());
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asm __volatile__(
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"tbegin.;"
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"blt 1f; "
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"tsuspend.;"
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"1: ;"
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: : : "memory");
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execl(path, "tm-exec", "--child", NULL);
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/* Shouldn't get here */
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perror("execl() failed");
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return 1;
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}
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static int after_exec(void)
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{
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asm __volatile__(
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"tbegin.;"
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"blt 1f;"
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"tsuspend.;"
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"1: ;"
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: : : "memory");
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FAIL_IF(failure_is_nesting());
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return 0;
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}
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int main(int argc, char *argv[])
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{
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path = argv[0];
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if (argc > 1 && strcmp(argv[1], "--child") == 0)
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return after_exec();
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return test_harness(test_exec, "tm_exec");
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}
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