[tip:x86/vdso] x86/vdso: Fix the x86 vdso2c tool includes

[tip-bot for Tommi Kyntola <tipbot@zytor.com>]

Commit-ID:  0a4f59d6e09ef16fbb7d213cfa1bf472c7845fda
Gitweb:     http://git.kernel.org/tip/0a4f59d6e09ef16fbb7d213cfa1bf472c7845fda
Author:     Tommi Kyntola <tommi.kyntola@gmail.com>
AuthorDate: Fri, 27 Mar 2015 11:48:16 -0700
Committer:  Ingo Molnar <mingo@kernel.org>
CommitDate: Tue, 31 Mar 2015 10:45:14 +0200

x86/vdso: Fix the x86 vdso2c tool includes

The build-time tool arch/x86/vdso/vdso2c.c includes <linux/elf.h>,
but cannot find it, unless the build host happens to provide it.

It should be reading the uapi linux/elf.h

This build regression came along with the vdso2c changes between
v3.15 and v3.16.

Signed-off-by: Tommi Kyntola <tommi.kyntola@gmail.com>
Signed-off-by: Andy Lutomirski <luto@amacapital.net>
Link: http://lkml.kernel.org/r/1525002.3cJ7BySVpA@musta
Link: http://lkml.kernel.org/r/efe1ec29eda830b1d0030882706f3dac99ce1f73.1427482099.git.luto@kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
---
 arch/x86/vdso/Makefile | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/x86/vdso/Makefile b/arch/x86/vdso/Makefile
index 7b9be98..e07e52a 100644
--- a/arch/x86/vdso/Makefile
+++ b/arch/x86/vdso/Makefile
@@ -51,7 +51,7 @@ VDSO_LDFLAGS_vdso.lds = -m64 -Wl,-soname=linux-vdso.so.1 \
 $(obj)/vdso64.so.dbg: $(src)/vdso.lds $(vobjs) FORCE
 	$(call if_changed,vdso)
 
-HOST_EXTRACFLAGS += -I$(srctree)/tools/include
+HOST_EXTRACFLAGS += -I$(srctree)/tools/include -I$(srctree)/include/uapi
 hostprogs-y			+= vdso2c
 
 quiet_cmd_vdso2c = VDSO2C  $@