From: Sergei Trofimovich <slyfox@gentoo.org>
Date: Tue, 17 Mar 2020 00:07:18 +0000 (+0000)
Subject: Makefile: disallow data races on gcc-10 as well
X-Git-Tag: v4.9.224~1
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=3bead443ef3d8fd53c8e40c6888671da225494d9;p=thirdparty%2Fkernel%2Fstable.git

Makefile: disallow data races on gcc-10 as well

commit b1112139a103b4b1101d0d2d72931f2d33d8c978 upstream.

gcc-10 will rename --param=allow-store-data-races=0
to -fno-allow-store-data-races.

The flag change happened at https://gcc.gnu.org/PR92046.

Signed-off-by: Sergei Trofimovich <slyfox@gentoo.org>
Acked-by: Jiri Kosina <jkosina@suse.cz>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Cc: Thomas Backlund <tmb@mageia.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/Makefile b/Makefile
index 4901317d22a06..8d48cf916f5cd 100644
--- a/Makefile
+++ b/Makefile
@@ -665,6 +665,7 @@ endif
 
 # Tell gcc to never replace conditional load with a non-conditional one
 KBUILD_CFLAGS	+= $(call cc-option,--param=allow-store-data-races=0)
+KBUILD_CFLAGS	+= $(call cc-option,-fno-allow-store-data-races)
 
 # check for 'asm goto'
 ifeq ($(shell $(CONFIG_SHELL) $(srctree)/scripts/gcc-goto.sh $(CC) $(KBUILD_CFLAGS)), y)