[PATCH 3/4] selftest: split mlock2_ funcs into separate mlock2.h

[wei.guo.simon@gmail.com]

From: Simon Guo <wei.guo.simon@gmail.com>

To prepare mlock2.h whose functionality will be reused.

Signed-off-by: Simon Guo <wei.guo.simon@gmail.com>
---
 tools/testing/selftests/vm/mlock2-tests.c | 21 +--------------------
 tools/testing/selftests/vm/mlock2.h       | 20 ++++++++++++++++++++
 2 files changed, 21 insertions(+), 20 deletions(-)
 create mode 100644 tools/testing/selftests/vm/mlock2.h

diff --git a/tools/testing/selftests/vm/mlock2-tests.c b/tools/testing/selftests/vm/mlock2-tests.c
index 02ca5e0..7cb13ce 100644
--- a/tools/testing/selftests/vm/mlock2-tests.c
+++ b/tools/testing/selftests/vm/mlock2-tests.c
@@ -7,27 +7,8 @@
 #include <string.h>
 #include <sys/time.h>
 #include <sys/resource.h>
-#include <syscall.h>
-#include <errno.h>
 #include <stdbool.h>
-
-#ifndef MLOCK_ONFAULT
-#define MLOCK_ONFAULT 1
-#endif
-
-#ifndef MCL_ONFAULT
-#define MCL_ONFAULT (MCL_FUTURE << 1)
-#endif
-
-static int mlock2_(void *start, size_t len, int flags)
-{
-#ifdef __NR_mlock2
-	return syscall(__NR_mlock2, start, len, flags);
-#else
-	errno = ENOSYS;
-	return -1;
-#endif
-}
+#include "mlock2.h"
 
 struct vm_boundaries {
 	unsigned long start;
diff --git a/tools/testing/selftests/vm/mlock2.h b/tools/testing/selftests/vm/mlock2.h
new file mode 100644
index 0000000..b9c6d9f
--- /dev/null
+++ b/tools/testing/selftests/vm/mlock2.h
@@ -0,0 +1,20 @@
+#include <syscall.h>
+#include <errno.h>
+
+#ifndef MLOCK_ONFAULT
+#define MLOCK_ONFAULT 1
+#endif
+
+#ifndef MCL_ONFAULT
+#define MCL_ONFAULT (MCL_FUTURE << 1)
+#endif
+
+static int mlock2_(void *start, size_t len, int flags)
+{
+#ifdef __NR_mlock2
+	return syscall(__NR_mlock2, start, len, flags);
+#else
+	errno = ENOSYS;
+	return -1;
+#endif
+}
-- 
1.8.3.1

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