From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mga03.intel.com (mga03.intel.com [134.134.136.65]) by gabe.freedesktop.org (Postfix) with ESMTPS id 86D6310E603 for ; Wed, 16 Mar 2022 15:03:39 +0000 (UTC) Received: from maurocar by linux.intel.com with local (Exim 4.94.2) (envelope-from ) id 1nUV8B-006e0z-7t for igt-dev@lists.freedesktop.org; Wed, 16 Mar 2022 16:00:07 +0100 From: Mauro Carvalho Chehab To: igt-dev@lists.freedesktop.org Date: Wed, 16 Mar 2022 15:59:57 +0100 Message-Id: <20220316150003.1583681-5-mauro.chehab@linux.intel.com> In-Reply-To: <20220316150003.1583681-1-mauro.chehab@linux.intel.com> References: <20220316150003.1583681-1-mauro.chehab@linux.intel.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Subject: [igt-dev] [PATCH v3 04/10] scripts/code_cov_gather*/sh: add help scripts for code coverage List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: igt-dev-bounces@lists.freedesktop.org Sender: "igt-dev" List-ID: From: Mauro Carvalho Chehab When a Linux Kernel is built with gcov support, the compiler creates some other object files (*.gcno) that are dependent of the compiler version, and contain references to the source files. At Kernel runtime at the test machine, counter files will be visible at sysfs (*.gcda files), which are also on a compiler specific format. In order to be able to properly parse the contents of the counters, the information from 3 different places should be merged altogether: - Runtime counters: /sys/.../*.gcda and hiperlinks to *.gcno - Compile-time cross-reference object files: *.gcno - Kernel source code. If the build machine is different than the source machine, some special scripts are needed in order to either copy the source files to the runtime machine or vice versa. This is described at: https://www.kernel.org/doc/html/latest/dev-tools/gcov.html Copy the two scripts described there as-is. Further patches will modify them as needed. Acked-by: Petri Latvala Signed-off-by: Mauro Carvalho Chehab --- scripts/code_cov_gather_on_build.sh | 23 +++++++++++++++++++++++ scripts/code_cov_gather_on_test.sh | 20 ++++++++++++++++++++ 2 files changed, 43 insertions(+) create mode 100755 scripts/code_cov_gather_on_build.sh create mode 100755 scripts/code_cov_gather_on_test.sh diff --git a/scripts/code_cov_gather_on_build.sh b/scripts/code_cov_gather_on_build.sh new file mode 100755 index 000000000000..99c436f76fb8 --- /dev/null +++ b/scripts/code_cov_gather_on_build.sh @@ -0,0 +1,23 @@ +#!/bin/bash + +KSRC=$1 +KOBJ=$2 +DEST=$3 + +if [ -z "$KSRC" ] || [ -z "$KOBJ" ] || [ -z "$DEST" ]; then + echo "Usage: $0 " >&2 + exit 1 +fi + +KSRC=$(cd $KSRC; printf "all:\n\t@echo \${CURDIR}\n" | make -f -) +KOBJ=$(cd $KOBJ; printf "all:\n\t@echo \${CURDIR}\n" | make -f -) + +find $KSRC $KOBJ $ -name '*.gcno' -o -name '*.[ch]' -o -type l $ -a \ + -perm /u+r,g+r | tar cfz $DEST -P -T - + +if [ $? -eq 0 ] ; then + echo "$DEST successfully created, copy to test system and unpack with:" + echo " tar xfz $DEST -P" +else + echo "Could not create file $DEST" +fi diff --git a/scripts/code_cov_gather_on_test.sh b/scripts/code_cov_gather_on_test.sh new file mode 100755 index 000000000000..8834aa0d78af --- /dev/null +++ b/scripts/code_cov_gather_on_test.sh @@ -0,0 +1,20 @@ +#!/bin/bash -e + +DEST=$1 +GCDA=/sys/kernel/debug/gcov + +if [ -z "$DEST" ] ; then + echo "Usage: $0 " >&2 + exit 1 +fi + +TEMPDIR=$(mktemp -d) +echo Collecting data.. +find $GCDA -type d -exec mkdir -p $TEMPDIR/\{\} \; +find $GCDA -name '*.gcda' -exec sh -c 'cat < $0 > '$TEMPDIR'/$0' {} \; +find $GCDA -name '*.gcno' -exec sh -c 'cp -d $0 '$TEMPDIR'/$0' {} \; +tar czf $DEST -C $TEMPDIR sys +rm -rf $TEMPDIR + +echo "$DEST successfully created, copy to build system and unpack with:" +echo " tar xfz $DEST" -- 2.35.1