From ace9429bb58fd418f0c81d4c2835699bddf6bde6 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Thu, 11 Apr 2024 10:27:49 +0200 Subject: Adding upstream version 6.6.15. Signed-off-by: Daniel Baumann --- tools/testing/selftests/memfd/common.c | 46 ++++++++++++++++++++++++++++++++++ 1 file changed, 46 insertions(+) create mode 100644 tools/testing/selftests/memfd/common.c (limited to 'tools/testing/selftests/memfd/common.c') diff --git a/tools/testing/selftests/memfd/common.c b/tools/testing/selftests/memfd/common.c new file mode 100644 index 0000000000..8eb3d75f6e --- /dev/null +++ b/tools/testing/selftests/memfd/common.c @@ -0,0 +1,46 @@ +// SPDX-License-Identifier: GPL-2.0 +#define _GNU_SOURCE +#define __EXPORTED_HEADERS__ + +#include +#include +#include +#include +#include +#include + +#include "common.h" + +int hugetlbfs_test = 0; + +/* + * Copied from mlock2-tests.c + */ +unsigned long default_huge_page_size(void) +{ + unsigned long hps = 0; + char *line = NULL; + size_t linelen = 0; + FILE *f = fopen("/proc/meminfo", "r"); + + if (!f) + return 0; + while (getline(&line, &linelen, f) > 0) { + if (sscanf(line, "Hugepagesize: %lu kB", &hps) == 1) { + hps <<= 10; + break; + } + } + + free(line); + fclose(f); + return hps; +} + +int sys_memfd_create(const char *name, unsigned int flags) +{ + if (hugetlbfs_test) + flags |= MFD_HUGETLB; + + return syscall(__NR_memfd_create, name, flags); +} -- cgit v1.2.3