From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:43482) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1faIKl-0006mv-Et for qemu-devel@nongnu.org; Tue, 03 Jul 2018 06:14:56 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1faIKk-0008Rr-Gz for qemu-devel@nongnu.org; Tue, 03 Jul 2018 06:14:55 -0400 Received: from mail-wm0-x22c.google.com ([2a00:1450:400c:c09::22c]:37855) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_128_CBC_SHA1:16) (Exim 4.71) (envelope-from ) id 1faIKk-0008RS-9t for qemu-devel@nongnu.org; Tue, 03 Jul 2018 06:14:54 -0400 Received: by mail-wm0-x22c.google.com with SMTP id n17-v6so1654675wmh.2 for ; Tue, 03 Jul 2018 03:14:54 -0700 (PDT) From: =?UTF-8?q?Alex=20Benn=C3=A9e?= Date: Tue, 3 Jul 2018 11:14:31 +0100 Message-Id: <20180703101444.23778-8-alex.bennee@linaro.org> In-Reply-To: <20180703101444.23778-1-alex.bennee@linaro.org> References: <20180703101444.23778-1-alex.bennee@linaro.org> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Subject: [Qemu-devel] [PULL 07/20] build-system: add clean-coverage target List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: peter.maydell@linaro.org Cc: qemu-devel@nongnu.org, cota@braap.org, famz@redhat.com, berrange@redhat.com, f4bug@amsat.org, richard.henderson@linaro.org, balrogg@gmail.com, aurelien@aurel32.net, agraf@suse.de, =?UTF-8?q?Alex=20Benn=C3=A9e?= 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: Alex Bennée Reviewed-by: Daniel P. Berrangé Reviewed-by: Philippe Mathieu-Daudé Tested-by: Philippe Mathieu-Daudé --- diff --git a/Makefile b/Makefile index 7ed9cc4a21..2b3413a5ba 100644 --- a/Makefile +++ b/Makefile @@ -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 '' diff --git a/docs/devel/testing.rst b/docs/devel/testing.rst index 66ef219f69..7f04ca104e 100644 --- a/docs/devel/testing.rst +++ b/docs/devel/testing.rst @@ -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 ============ -- 2.17.1