[Xen-devel] [PATCH 4/4] xen: add a gcov Kconfig option

[Wei Liu <wei.liu2@xxxxxxxxxx>]

Signed-off-by: Wei Liu <wei.liu2@xxxxxxxxxx>
---
Cc: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
Cc: George Dunlap <George.Dunlap@xxxxxxxxxxxxx>
Cc: Ian Jackson <ian.jackson@xxxxxxxxxxxxx>
Cc: Jan Beulich <jbeulich@xxxxxxxx>
Cc: Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx>
Cc: Stefano Stabellini <sstabellini@xxxxxxxxxx>
Cc: Tim Deegan <tim@xxxxxxx>
Cc: Doug Goldstein <cardoe@xxxxxxxxxx>

Would like to have it default to DEBUG, but we also need to check
compiler to be gcc. I couldn't figure out how to check compiler to be
gcc in Kconfig.
---
 Config.mk           | 3 ---
 xen/Kconfig.debug   | 5 +++++
 xen/Rules.mk        | 2 +-
 xen/common/Makefile | 2 +-
 4 files changed, 7 insertions(+), 5 deletions(-)

diff --git a/Config.mk b/Config.mk
index 9c60896..081ff69 100644
--- a/Config.mk
+++ b/Config.mk
@@ -20,9 +20,6 @@ or       = $(if $(strip $(1)),$(1),$(if $(strip 
$(2)),$(2),$(if $(strip $(3)),$(
 debug ?= y
 debug_symbols ?= $(debug)
 
-# Test coverage support
-coverage ?= n
-
 XEN_COMPILE_ARCH    ?= $(shell uname -m | sed -e s/i.86/x86_32/ \
                          -e s/i86pc/x86_32/ -e s/amd64/x86_64/ \
                          -e s/armv7.*/arm32/ -e s/armv8.*/arm64/ \
diff --git a/xen/Kconfig.debug b/xen/Kconfig.debug
index 1be6344..a0bd043 100644
--- a/xen/Kconfig.debug
+++ b/xen/Kconfig.debug
@@ -13,6 +13,11 @@ config DEBUG
 
 if DEBUG || EXPERT = "y"
 
+config GCOV
+       bool "Gcov Support"
+       ---help---
+         Enable gcov (a test coverage program in GCC) support.
+
 config CRASH_DEBUG
        bool "Crash Debugging Support"
        depends on X86
diff --git a/xen/Rules.mk b/xen/Rules.mk
index 22aca0a..696aaa8 100644
--- a/xen/Rules.mk
+++ b/xen/Rules.mk
@@ -115,7 +115,7 @@ subdir-all := $(subdir-y) $(subdir-n)
 
 $(filter %.init.o,$(obj-y) $(obj-bin-y) $(extra-y)): CFLAGS += 
-DINIT_SECTIONS_ONLY
 
-ifeq ($(coverage),y)
+ifeq ($(CONFIG_GCOV),y)
 $(filter-out %.init.o $(nogcov-y),$(obj-y) $(obj-bin-y) $(extra-y)): CFLAGS += 
-fprofile-arcs -ftest-coverage -DTEST_COVERAGE
 endif
 
diff --git a/xen/common/Makefile b/xen/common/Makefile
index c2e6846..0fed30b 100644
--- a/xen/common/Makefile
+++ b/xen/common/Makefile
@@ -75,7 +75,7 @@ obj-$(CONFIG_TMEM) += $(tmem-y)
 
 subdir-$(CONFIG_X86) += hvm
 
-subdir-$(coverage) += gcov
+subdir-$(CONFIG_GCOV) += gcov
 
 subdir-y += libelf
 subdir-$(CONFIG_HAS_DEVICE_TREE) += libfdt
-- 
2.1.4


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