sys/eventfd.h was being guarded only by a check for linux but does
not exist on older distributions like CentOS 5. Move the include
into the code that uses it and add an appropriate guard.
Signed-off-by: Matthew Fortune <matthew.fort...@imgtec.com>
---
migration/postcopy-ram.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/migration/postcopy-ram.c b/migration/postcopy-ram.c
index 254c629..fbd0064 100644
--- a/migration/postcopy-ram.c
+++ b/migration/postcopy-ram.c
@@ -52,14 +52,14 @@ struct PostcopyDiscardState {
#if defined(__linux__)
#include <poll.h>
-#include <sys/eventfd.h>
#include <sys/mman.h>
#include <sys/ioctl.h>
#include <sys/syscall.h>
#include <asm/types.h> /* for __u64 */
#endif
-#if defined(__linux__) && defined(__NR_userfaultfd)
+#if defined(__linux__) && defined(__NR_userfaultfd) && defined(CONFIG_EVENTFD)
+#include <sys/eventfd.h>
#include <linux/userfaultfd.h>
static bool ufd_version_check(int ufd)
--
2.2.1
