commit fd982af0a307edc5d3e56011d2e045015b1efd4b
Author: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Date:   Mon Mar 30 01:22:24 2020 +0200

    ras-record.h: define an external var as such
    
    Otherwise, newer versions of gcc will produce multiple symbols,
    causing link breakages.
    
    Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>

diff --git a/ras-record.h b/ras-record.h
index 5311c67caf44..0d2a481c23dd 100644
--- a/ras-record.h
+++ b/ras-record.h
@@ -25,7 +25,7 @@
 
 extern long user_hz;
 
-struct ras_events *ras;
+extern struct ras_events *ras;
 
 struct ras_mc_event {
 	char timestamp[64];