From b073e110e81bc16d17d4d0bcc40f0137685bbf39 Mon Sep 17 00:00:00 2001
From: Ian Campbell <ian.campbell@citrix.com>
Date: Fri, 15 Mar 2013 13:15:43 +0000
Subject: blktap2: use sys/eventfd.h if it is available

arm64 only has the eventfd2 system call and using the libc wrapper when
available hides this from us. eventfd() has been in libc since glibc 2.8.

This code is already Linux specific.

Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Acked-by: Ian Jackson <ian.jackson@eu.citrix.com>
---
 tools/config.h.in | 3 +++
 1 file changed, 3 insertions(+)

(limited to 'tools/config.h.in')

diff --git a/tools/config.h.in b/tools/config.h.in
index 08e337a1f5..a67910b57d 100644
--- a/tools/config.h.in
+++ b/tools/config.h.in
@@ -27,6 +27,9 @@
 /* Define to 1 if you have the <string.h> header file. */
 #undef HAVE_STRING_H
 
+/* Define to 1 if you have the <sys/eventfd.h> header file. */
+#undef HAVE_SYS_EVENTFD_H
+
 /* Define to 1 if you have the <sys/stat.h> header file. */
 #undef HAVE_SYS_STAT_H
 
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