From 8705a49c35be088a50b8d5fc5e1aa24d6711fd5b Mon Sep 17 00:00:00 2001
From: Roland McGrath <roland@redhat.com>
Date: Mon, 14 Apr 2008 12:19:30 -0700
Subject: [PATCH] x86 vDSO: compile with -g, 64-bit

The 64-bit vDSO's sources are compiled with -g0 for no good reason.
Using -g when enabled lets their separate debug files be used at
runtime via build ID matching, same as we can see 32-bit vDSO's
assembly sources.

Signed-off-by: Roland McGrath <roland@redhat.com>
Acked-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
---
 arch/x86/vdso/Makefile | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/arch/x86/vdso/Makefile b/arch/x86/vdso/Makefile
index 17a6b05785..b7ad9f89d2 100644
--- a/arch/x86/vdso/Makefile
+++ b/arch/x86/vdso/Makefile
@@ -37,7 +37,8 @@ $(obj)/%.so: OBJCOPYFLAGS := -S
 $(obj)/%.so: $(obj)/%.so.dbg FORCE
 	$(call if_changed,objcopy)
 
-CFL := $(PROFILING) -mcmodel=small -fPIC -g0 -O2 -fasynchronous-unwind-tables -m64
+CFL := $(PROFILING) -mcmodel=small -fPIC -O2 -fasynchronous-unwind-tables -m64 \
+       $(filter -g%,$(KBUILD_CFLAGS))
 
 $(vobjs): KBUILD_CFLAGS += $(CFL)
 
-- 
2.39.5