5 files changed, 64 insertions, 40 deletions

diff --git a/tools/testing/selftests/memfd/Makefile b/tools/testing/selftests/memfd/Makefile
index 3926a0409dda..a5276a91dfbf 100644
--- a/tools/testing/selftests/memfd/Makefile
+++ b/tools/testing/selftests/memfd/Makefile
@@ -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
diff --git a/tools/testing/selftests/memfd/common.c b/tools/testing/selftests/memfd/common.c
new file mode 100644
index 000000000000..8eb3d75f6e60
--- /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 <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);
+}
diff --git a/tools/testing/selftests/memfd/common.h b/tools/testing/selftests/memfd/common.h
new file mode 100644
index 000000000000..522d2c630bd8
--- /dev/null
+++ b/tools/testing/selftests/memfd/common.h
@@ -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
diff --git a/tools/testing/selftests/memfd/fuse_test.c b/tools/testing/selftests/memfd/fuse_test.c
index 1ccb7a3eb14b..795a25ba8521 100644
--- a/tools/testing/selftests/memfd/fuse_test.c
+++ b/tools/testing/selftests/memfd/fuse_test.c
@@ -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;
diff --git a/tools/testing/selftests/memfd/memfd_test.c b/tools/testing/selftests/memfd/memfd_test.c
index 910c55f858bb..10baa1652fc2 100644
--- a/tools/testing/selftests/memfd/memfd_test.c
+++ b/tools/testing/selftests/memfd/memfd_test.c
@@ -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;