In order to protect against the header being included multiple times
on the same compilation unit.
Signed-off-by: Roger Pau Monné <roger....@citrix.com>
Reviewed-by: Boris Ostrovsky <boris.ostrov...@oracle.com>
---
Cc: Boris Ostrovsky <boris.ostrov...@oracle.com>
Cc: Juergen Gross <jgr...@suse.com>
Cc: Stefano Stabellini <sstabell...@kernel.org>
Cc: xen-de...@lists.xenproject.org
---
This is required as a pre-patch to use ZONE_DEVICE, or else the
fallback of including the balloon header might not work properly.
---
include/xen/balloon.h | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/include/xen/balloon.h b/include/xen/balloon.h
index 6fb95aa19405..6dbdb0b3fd03 100644
--- a/include/xen/balloon.h
+++ b/include/xen/balloon.h
@@ -2,6 +2,8 @@
/******************************************************************************
* Xen balloon functionality
*/
+#ifndef _XEN_BALLOON_H
+#define _XEN_BALLOON_H
#define RETRY_UNLIMITED 0
@@ -34,3 +36,5 @@ static inline void xen_balloon_init(void)
{
}
#endif
+
+#endif /* _XEN_BALLOON_H */
--
2.28.0
