From: Joel Stanley <joel@jms.id.au>
Date: Mon, 17 Sep 2018 07:37:54 +0000 (+0930)
Subject: ftrace: Build with CPPFLAGS to get -Qunused-arguments
X-Git-Tag: v4.14.93~38
X-Git-Url: https://www.infradead.org/git/?a=commitdiff_plain;h=487467e7d031e73907c820ef05ce0d4d18c24767;p=users%2Fjedix%2Flinux-maple.git

ftrace: Build with CPPFLAGS to get -Qunused-arguments

When building to record the mcount locations the kernel uses
KBUILD_CFLAGS but not KBUILD_CPPFLAGS. This means it lacks
-Qunused-arguments when building with clang, resulting in a lot of
noisy warnings.

Signed-off-by: Joel Stanley <joel@jms.id.au>
Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
[nc: Fix conflicts due to lack of 87a32e624037 and d503ac531a52]
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/scripts/Makefile.build b/scripts/Makefile.build
index be9e5deb58ba2..3edc9c04cb468 100644
--- a/scripts/Makefile.build
+++ b/scripts/Makefile.build
@@ -242,7 +242,7 @@ else
 sub_cmd_record_mcount = set -e ; perl $(srctree)/scripts/recordmcount.pl "$(ARCH)" \
 	"$(if $(CONFIG_CPU_BIG_ENDIAN),big,little)" \
 	"$(if $(CONFIG_64BIT),64,32)" \
-	"$(OBJDUMP)" "$(OBJCOPY)" "$(CC) $(KBUILD_CFLAGS)" \
+	"$(OBJDUMP)" "$(OBJCOPY)" "$(CC) $(KBUILD_CPPFLAGS) $(KBUILD_CFLAGS)" \
 	"$(LD)" "$(NM)" "$(RM)" "$(MV)" \
 	"$(if $(part-of-module),1,0)" "$(@)";
 recordmcount_source := $(srctree)/scripts/recordmcount.pl