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memfd-test: move common code to a shared unit 

The memfd & fuse tests will share more common code in the following
commits to test hugetlb support.

Link: http://lkml.kernel.org/r/20171107122800.25517-9-marcandre.lureau@redhat.com
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Mike Kravetz <mike.kravetz@oracle.com>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: Hugh Dickins <hughd@google.com>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: David Herrmann <dh.herrmann@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Marc-André Lureau 2018-01-31 16:19:40 -08:00 committed by Linus Torvalds
parent 3037aeb991
commit 29f34d1dd6
5 changed files with 64 additions and 40 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
tools/testing/selftests/memfd/Makefile
View File

@ -12,3 +12,8 @@ fuse_mnt.o: CFLAGS += $(shell pkg-config fuse --cflags)
include ../lib.mk
$(OUTPUT)/fuse_mnt: LDLIBS += $(shell pkg-config fuse --libs)
$(OUTPUT)/memfd_test: memfd_test.c common.o
$(OUTPUT)/fuse_test: fuse_test.c common.o
EXTRA_CLEAN = common.o

46
tools/testing/selftests/memfd/common.c Normal file
View File

@ -0,0 +1,46 @@
// SPDX-License-Identifier: GPL-2.0
#define _GNU_SOURCE
#define __EXPORTED_HEADERS__
#include <stdio.h>
#include <stdlib.h>
#include <linux/fcntl.h>
#include <linux/memfd.h>
#include <unistd.h>
#include <sys/syscall.h>
#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);
}

9
tools/testing/selftests/memfd/common.h Normal file
View File

@ -0,0 +1,9 @@
#ifndef COMMON_H_
#define COMMON_H_
extern int hugetlbfs_test;
unsigned long default_huge_page_size(void);
int sys_memfd_create(const char *name, unsigned int flags);
#endif

8
tools/testing/selftests/memfd/fuse_test.c
View File

@ -33,15 +33,11 @@
#include <sys/wait.h>
#include <unistd.h>
#include "common.h"
#define MFD_DEF_SIZE 8192
#define STACK_SIZE 65536
static int sys_memfd_create(const char *name,
unsigned int flags)
{
return syscall(__NR_memfd_create, name, flags);
}
static int mfd_assert_new(const char *name, loff_t sz, unsigned int flags)
{
int r, fd;

36
tools/testing/selftests/memfd/memfd_test.c
View File

@ -19,6 +19,8 @@
#include <sys/wait.h>
#include <unistd.h>
#include "common.h"
#define MEMFD_STR "memfd:"
#define MEMFD_HUGE_STR "memfd-hugetlb:"
#define SHARED_FT_STR "(shared file-table)"
@ -29,43 +31,9 @@
/*
* Default is not to test hugetlbfs
*/
static int hugetlbfs_test;
static size_t mfd_def_size = MFD_DEF_SIZE;
static const char *memfd_str = MEMFD_STR;
/*
* Copied from mlock2-tests.c
*/
static 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;
}
static int sys_memfd_create(const char *name,
unsigned int flags)
{
if (hugetlbfs_test)
flags |= MFD_HUGETLB;
return syscall(__NR_memfd_create, name, flags);
}
static int mfd_assert_new(const char *name, loff_t sz, unsigned int flags)
{
int r, fd;