92 lines
2.0 KiB
C
92 lines
2.0 KiB
C
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// SPDX-License-Identifier: LGPL-2.1-or-later
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/*
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* Copyright (C) 2005-2006 IBM Corporation.
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* Author: David Gibson & Adam Litke
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*/
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/*\
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* [Description]
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*
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* This baseline test validates that a mapping of a certain size can be
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* created, correctly. Once created, all the pages are filled with a
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* pattern and rechecked to test for corruption. The mapping is then
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* released. This process is repeated for a specified number of
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* iterations.
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*/
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#include "hugetlb.h"
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#define NR_HUGEPAGES 2
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#define MNTPOINT "hugetlbfs/"
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static unsigned long hpage_size;
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static int fd = -1;
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static void run_test(unsigned int iter)
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{
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char *m;
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size_t i, j;
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char pattern = 'A';
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size_t size = NR_HUGEPAGES*hpage_size;
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fd = tst_creat_unlinked(MNTPOINT, 0);
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m = SAFE_MMAP(NULL, size, (PROT_READ|PROT_WRITE), MAP_SHARED, fd, 0);
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for (i = 0; i < NR_HUGEPAGES; i++) {
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for (j = 0; j < hpage_size; j++) {
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if (*(m+(i*hpage_size)+j) != 0) {
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tst_res(TFAIL, "Iter %u: Verifying the mmap area failed. "
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"Got %c, expected 0", iter,
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*(m+(i*hpage_size)+j));
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goto cleanup;
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}
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}
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}
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for (i = 0; i < NR_HUGEPAGES; i++) {
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pattern = 65+(i%26);
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memset(m+(i*hpage_size), pattern, hpage_size);
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}
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for (i = 0; i < NR_HUGEPAGES; i++) {
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pattern = 65+(i%26);
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for (j = 0; j < hpage_size; j++) {
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if (*(m+(i*hpage_size)+j) != pattern) {
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tst_res(TFAIL, "Iter %u: Verifying the mmap area failed. "
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"got: %c, expected: %c", iter,
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*(m+(i*hpage_size)+j), pattern);
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goto cleanup;
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}
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}
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}
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tst_res(TPASS, "Iter %u: Successfully verified the mmap area.", iter);
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cleanup:
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SAFE_MUNMAP(m, size);
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SAFE_CLOSE(fd);
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}
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static void setup(void)
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{
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hpage_size = tst_get_hugepage_size();
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}
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static void cleanup(void)
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{
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if (fd >= 0)
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SAFE_CLOSE(fd);
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}
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static struct tst_test test = {
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.tcnt = 2,
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.needs_root = 1,
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.mntpoint = MNTPOINT,
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.needs_hugetlbfs = 1,
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.needs_tmpdir = 1,
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.setup = setup,
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.cleanup = cleanup,
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.test = run_test,
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.hugepages = {NR_HUGEPAGES, TST_NEEDS},
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};
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