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xen/balloon: add header guard

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In order to protect against the header being included multiple times
on the same compilation unit.

Signed-off-by: Roger Pau Monné <roger.pau@citrix.com>
Reviewed-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Link: https://lore.kernel.org/r/20200901083326.21264-2-roger.pau@citrix.com
Signed-off-by: Juergen Gross <jgross@suse.com>
This commit is contained in:
Roger Pau Monne 2020-09-01 10:33:24 +02:00 committed by Juergen Gross
parent 9d3004bf7b
commit aecb2016c9
1 changed files with 4 additions and 0 deletions
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4
include/xen/balloon.h
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@ -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 */