Commit 990e6a27 authored by Alex Bennée's avatar Alex Bennée
Browse files

build-system: add clean-coverage target 



This can be used to remove any stale coverage data before any
particular test run. This is useful for analysing individual tests.

Signed-off-by: default avatarAlex Bennée <alex.bennee@linaro.org>
Reviewed-by: default avatarDaniel P. Berrangé <berrange@redhat.com>
Reviewed-by: default avatarPhilippe Mathieu-Daudé <f4bug@amsat.org>
Tested-by: default avatarPhilippe Mathieu-Daudé <f4bug@amsat.org&gt;--->
parent 0708e647

Makefile

+11 −0
Original line number Diff line number Diff line
@@ -723,6 +723,14 @@ module_block.h: $(SRC_PATH)/scripts/modules/module_block.py config-host.mak 
	$(addprefix $(SRC_PATH)/,$(patsubst %.mo,%.c,$(block-obj-m))), \

	"GEN","$@")



ifdef CONFIG_GCOV

.PHONY: clean-coverage

clean-coverage:

	$(call quiet-command, \

		find . \( -name '*.gcda' -o -name '*.gcov' \) -type f -exec rm {} +, \

		"CLEAN", "coverage files")

endif



clean:

# avoid old build problems by removing potentially incorrect old files

	rm -f config.mak op-i386.h opc-i386.h gen-op-i386.h op-arm.h opc-arm.h gen-op-arm.h
@@ -1073,6 +1081,9 @@ endif 
		echo '')

	@echo  'Cleaning targets:'

	@echo  '  clean           - Remove most generated files but keep the config'

ifdef CONFIG_GCOV

	@echo  '  clean-coverage  - Remove coverage files'

endif

	@echo  '  distclean       - Remove all generated files'

	@echo  '  dist            - Build a distributable tarball'

	@echo  ''

docs/devel/testing.rst

+8 −3
Original line number Diff line number Diff line
@@ -161,9 +161,14 @@ GCC gcov support 
``gcov`` is a GCC tool to analyze the testing coverage by

instrumenting the tested code. To use it, configure QEMU with

``--enable-gcov`` option and build. Then run ``make check`` as usual.

Reports can be obtained by running ``gcov`` command on the output

files under ``$build_dir/tests/``, please read the ``gcov``

documentation for more information.



If you want to gather coverage information on a single test the ``make

clean-coverage`` target can be used to delete any existing coverage

information before running a single test.



Reports can be obtained by running ``gcov`` command

on the output files under ``$build_dir/tests/``, please read the

``gcov`` documentation for more information.



QEMU iotests

============