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perf: Disable perf for ARC770 only, enable for ARC HS38

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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 <Alexey.Brodkin@synopsys.com>
This commit is contained in:
Alexey Brodkin
2017-05-03 11:46:19 +03:00
committed by Jo-Philipp Wich
parent e06d8f0f6f
commit 5dc76a4258
1 changed files with 1 additions and 1 deletions
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package/devel/perf/Makefile
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@@ -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