From 5dc76a4258f6f73a07b12deda73b3e5b085a7e54 Mon Sep 17 00:00:00 2001 From: Alexey Brodkin Date: Wed, 3 May 2017 11:46:19 +0300 Subject: [PATCH] perf: Disable perf for ARC770 only, enable for ARC HS38 Toolchain built for ARCv1 (read for ARC700 cores) by default has disabled atomic ops (-mno-atomic). When we build Linux kernel for ARC770 which has LL/SC instructions and thus may handle normally atomic ops we explicitly add "-matomic" in CFLAGS. But since user-space perf utility has no way to extract CPU config options from Kconfig/defconfig it uses compiler default settings. In case of ARCv2 (read ARC HS38) atomics are enabled by default and so perf builds perfectly fine thus reenabling perf for ARC HS38 (actually for non-ARC700 targets). Signed-off-by: Alexey Brodkin --- package/devel/perf/Makefile | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/package/devel/perf/Makefile b/package/devel/perf/Makefile index 35f1719d31..361e42278c 100644 --- a/package/devel/perf/Makefile +++ b/package/devel/perf/Makefile @@ -26,7 +26,7 @@ include $(INCLUDE_DIR)/package.mk define Package/perf SECTION:=devel CATEGORY:=Development - DEPENDS:= +libelf1 +libdw +libpthread +librt +objdump @!LINUX_3_18 @!IN_SDK @!arc + DEPENDS:= +libelf1 +libdw +libpthread +librt +objdump @!LINUX_3_18 @!IN_SDK @!TARGET_arc770 TITLE:=Linux performance monitoring tool VERSION:=$(LINUX_VERSION)-$(PKG_RELEASE) URL:=http://www.kernel.org