selftest: split mlock2_ funcs into separate mlock2.h

To prepare mlock2.h whose functionality will be reused.

Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Simon Guo <[email protected]>
Cc: Alexey Klimov <[email protected]>
Cc: Eric B Munson <[email protected]>
Cc: Geert Uytterhoeven <[email protected]>
Cc: "Kirill A. Shutemov" <[email protected]>
Cc: Mel Gorman <[email protected]>
Cc: Michal Hocko <[email protected]>
Cc: Shuah Khan <[email protected]>
Cc: Simon Guo <[email protected]>
Cc: Thierry Reding <[email protected]>
Cc: Vlastimil Babka <[email protected]>
Cc: David Rientjes <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>

2 files changed, 21 insertions, 20 deletions

diff --git a/tools/testing/selftests/vm/mlock2-tests.c b/tools/testing/selftests/vm/mlock2-tests.c
index 02ca5e0177c5..7cb13cede483 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 000000000000..b9c6d9fe372f
--- /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
+}