From: Vladimir Sokolovsky <vlad@mellanox.com>
Date: Tue, 28 Apr 2015 11:21:06 +0000 (+0300)
Subject: compat: export symbol elfcorehdr_addr if it is not exported by the kernel
X-Git-Url: https://openfabrics.org/gitweb/?a=commitdiff_plain;h=cbf335a9177e29b765b7f4fbba46131f76c74c84;p=~aditr%2Fcompat.git

compat: export symbol elfcorehdr_addr if it is not exported by the kernel

issue: http://bugs.openfabrics.org/bugzilla/show_bug.cgi?id=2536

Signed-off-by: Vladimir Sokolovsky <vlad@mellanox.com>
---

diff --git a/compat/compat-3.18.c b/compat/compat-3.18.c
index 4dced45..824ba4c 100644
--- a/compat/compat-3.18.c
+++ b/compat/compat-3.18.c
@@ -1,5 +1,12 @@
 #include <linux/kernel.h>
+#include <linux/export.h>
 #include <linux/crash_dump.h>
 
+#ifndef HAVE_ELFCOREHDR_ADDR_EXPORTED
+#ifndef ELFCORE_ADDR_MAX
+#define ELFCORE_ADDR_MAX        (-1ULL)
+#endif
+
 unsigned long long elfcorehdr_addr = ELFCORE_ADDR_MAX;
 EXPORT_SYMBOL_GPL(elfcorehdr_addr);
+#endif /* HAVE_ELFCOREHDR_ADDR_EXPORTED */
diff --git a/config/rdma.m4 b/config/rdma.m4
index 847757c..0a2aaa3 100644
--- a/config/rdma.m4
+++ b/config/rdma.m4
@@ -2110,6 +2110,12 @@ AC_DEFUN([LINUX_CONFIG_COMPAT],
 	],[
 		AC_MSG_RESULT(no)
 	])
+
+	LB_CHECK_SYMBOL_EXPORT([elfcorehdr_addr],
+		[kernel/crash_dump.c],
+		[AC_DEFINE(HAVE_ELFCOREHDR_ADDR_EXPORTED, 1,
+			[elfcorehdr_addr is exported by the kernel])],
+	[])
 ])
 #
 # COMPAT_CONFIG_HEADERS