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From: David Marchand <david.marchand@redhat.com>
To: dev@dpdk.org
Cc: thomas@monjalon.net, bruce.richardson@intel.com,
	kevin.laatz@intel.com, aconole@redhat.com, nhorman@tuxdriver.com,
	Michael Santana <maicolgabriel@hotmail.com>,
	John McNamara <john.mcnamara@intel.com>,
	Marko Kovacevic <marko.kovacevic@intel.com>
Subject: [dpdk-dev] [PATCH] add ABI checks
Date: Fri, 20 Dec 2019 16:20:58 +0100
Message-ID: <20191220152058.10739-1-david.marchand@redhat.com> (raw)

Starting from Kevin and Bruce idea of using libabigail, here is an
alternate approach to implement ABI checks.

By default, those checks are disabled and enabling them requires a
manual step that generates the ABI dumps on a reference version for a
set of configurations.

Those checks are enabled in the CI by default for the default meson
options on x86 and aarch64 so that proposed patches are validated.
A cache of the ABI is stored in travis jobs.
Checks can be only informational by setting ABI_CHECKS_WARN_ONLY when
breaking the ABI in a future release.

For advanced developers and maintainers, the contributing guide details
the higher level scripts that are quite close to the existing devtools
scripts.

Signed-off-by: David Marchand <david.marchand@redhat.com>
---
 .ci/linux-build.sh                  | 43 +++++++++++++++++++++++++++
 .travis.yml                         | 20 +++++++++++--
 devtools/check-abi-dump.sh          | 46 +++++++++++++++++++++++++++++
 devtools/check-abi-reference.sh     | 27 +++++++++++++++++
 devtools/dpdk.abignore              |  2 ++
 devtools/gen-abi-dump.sh            | 29 ++++++++++++++++++
 devtools/gen-abi-reference.sh       | 24 +++++++++++++++
 devtools/test-build.sh              | 13 ++++++--
 devtools/test-meson-builds.sh       |  6 ++++
 doc/guides/contributing/patches.rst | 25 ++++++++++++++++
 10 files changed, 230 insertions(+), 5 deletions(-)
 create mode 100755 devtools/check-abi-dump.sh
 create mode 100755 devtools/check-abi-reference.sh
 create mode 100644 devtools/dpdk.abignore
 create mode 100755 devtools/gen-abi-dump.sh
 create mode 100755 devtools/gen-abi-reference.sh

diff --git a/.ci/linux-build.sh b/.ci/linux-build.sh
index ccc3a7ccd..345dba264 100755
--- a/.ci/linux-build.sh
+++ b/.ci/linux-build.sh
@@ -30,8 +30,51 @@ fi
 
 OPTS="$OPTS --default-library=$DEF_LIB"
 meson build --werror -Dexamples=all $OPTS
+
+if [ "$ABI_CHECKS" = "1" ]; then
+    git remote add ref ${REF_GIT_REPO:-https://dpdk.org/git/dpdk}
+    git fetch --tags ref ${REF_GIT_BRANCH:-master}
+
+    head=$(git describe --all)
+    tag=$(git describe --abbrev=0)
+
+    if [ "$(cat reference/VERSION 2>/dev/null)" != "$tag" ]; then
+        rm -rf reference
+    fi
+
+    if [ ! -d reference ]; then
+        gen_abi_dump=$(mktemp -t gen-abi-dump-XXX.sh)
+        cp -a devtools/gen-abi-dump.sh $gen_abi_dump
+
+        git checkout -qf $tag
+        ninja -C build
+        $gen_abi_dump build reference
+
+        if [ "$AARCH64" != "1" ]; then
+            mkdir -p reference/app
+            cp -a build/app/dpdk-testpmd reference/app/
+
+            export LD_LIBRARY_PATH=$(pwd)/build/lib:$(pwd)/build/drivers
+            devtools/test-null.sh reference/app/dpdk-testpmd
+            unset LD_LIBRARY_PATH
+        fi
+        echo $tag > reference/VERSION
+
+        git checkout -qf $head
+    fi
+fi
+
 ninja -C build
 
+if [ "$ABI_CHECKS" = "1" ]; then
+    devtools/check-abi-dump.sh build reference ${ABI_CHECKS_WARN_ONLY:-}
+    if [ "$AARCH64" != "1" ]; then
+        export LD_LIBRARY_PATH=$(pwd)/build/lib:$(pwd)/build/drivers
+        devtools/test-null.sh reference/app/dpdk-testpmd
+        unset LD_LIBRARY_PATH
+    fi
+fi
+
 if [ "$AARCH64" != "1" ]; then
     devtools/test-null.sh
 fi
diff --git a/.travis.yml b/.travis.yml
index 8f90d06f2..bbb060fa2 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,5 +1,8 @@
 language: c
-cache: ccache
+cache:
+  ccache: true
+  directories:
+    - reference
 compiler:
   - gcc
   - clang
@@ -21,7 +24,7 @@ aarch64_packages: &aarch64_packages
 
 extra_packages: &extra_packages
   - *required_packages
-  - [libbsd-dev, libpcap-dev, libcrypto++-dev, libjansson4]
+  - [libbsd-dev, libpcap-dev, libcrypto++-dev, libjansson4, abigail-tools]
 
 build_32b_packages: &build_32b_packages
   - *required_packages
@@ -59,6 +62,13 @@ matrix:
       apt:
         packages:
           - *aarch64_packages
+  - env: DEF_LIB="shared" EXTRA_PACKAGES=1 ABI_CHECKS=1 AARCH64=1
+    compiler: gcc
+    addons:
+      apt:
+        packages:
+          - *aarch64_packages
+          - *extra_packages
   - env: DEF_LIB="static" EXTRA_PACKAGES=1
     compiler: gcc
     addons:
@@ -72,6 +82,12 @@ matrix:
         packages:
           - *extra_packages
           - *doc_packages
+  - env: DEF_LIB="shared" EXTRA_PACKAGES=1 ABI_CHECKS=1
+    compiler: gcc
+    addons:
+      apt:
+        packages:
+          - *extra_packages
   - env: DEF_LIB="static" OPTS="-Denable_kmods=false" EXTRA_PACKAGES=1
     compiler: gcc
     addons:
diff --git a/devtools/check-abi-dump.sh b/devtools/check-abi-dump.sh
new file mode 100755
index 000000000..f48a2ae7e
--- /dev/null
+++ b/devtools/check-abi-dump.sh
@@ -0,0 +1,46 @@
+#!/bin/sh -e
+# SPDX-License-Identifier: BSD-3-Clause
+# Copyright (c) 2019 Red Hat, Inc.
+
+if [ $# != 2 ] && [ $# != 3 ]; then
+	echo "Usage: $0 builddir dumpdir [warnonly]"
+	exit 1
+fi
+
+builddir=$1
+dumpdir=$2
+warnonly=${3:-}
+if [ ! -d $builddir ]; then
+	echo "Error: build directory '$builddir' does not exist."
+	exit 1
+fi
+if [ ! -d $dumpdir ]; then
+	echo "Error: dump directory '$dumpdir' does not exist."
+	exit 1
+fi
+
+ABIDIFF_OPTIONS="--suppr $(dirname $0)/dpdk.abignore"
+for dump in $(find $dumpdir -name "*.dump"); do
+	libname=$(basename $dump)
+	libname=${libname%.dump}
+	result=
+	for f in $(find $builddir -name "$libname.so.*"); do
+		if test -L $f || [ "$f" != "${f%%.symbols}" ]; then
+			continue
+		fi
+		result=found
+
+		if ! abidiff $ABIDIFF_OPTIONS $dump $f; then
+			if [ -z "$warnonly" ]; then
+				echo "Error: ABI issue reported for $dump, $f"
+				exit 1
+			fi
+			echo "Warning: ABI issue reported for $dump, $f"
+		fi
+		break
+	done
+	if [ "$result" != "found" ]; then
+		echo "Error: can't find a library for dump file $dump"
+		exit 1
+	fi
+done
diff --git a/devtools/check-abi-reference.sh b/devtools/check-abi-reference.sh
new file mode 100755
index 000000000..7addb094e
--- /dev/null
+++ b/devtools/check-abi-reference.sh
@@ -0,0 +1,27 @@
+#!/bin/sh -e
+# SPDX-License-Identifier: BSD-3-Clause
+# Copyright (c) 2019 Red Hat, Inc.
+
+devtools_dir=$(dirname $(readlink -f $0))
+. $devtools_dir/load-devel-config
+
+abi_ref_build_dir=${DPDK_ABI_REF_BUILD_DIR:-reference}
+builds_dir=${DPDK_BUILD_TEST_DIR:-.}
+
+for dir in $abi_ref_build_dir/*; do
+	if [ "$dir" = "$abi_ref_build_dir" ]; then
+		exit 1
+	fi
+	if [ ! -d $dir/dump ]; then
+		echo "Skipping $dir"
+		continue
+	fi
+	target=$(basename $dir)
+	if [ -d $builds_dir/$target/install ]; then
+		libdir=$builds_dir/$target/install
+	else
+		libdir=$builds_dir/$target
+	fi
+	echo "Checking ABI between $libdir and $dir/dump"
+	$devtools_dir/check-abi-dump.sh $libdir $dir/dump
+done
diff --git a/devtools/dpdk.abignore b/devtools/dpdk.abignore
new file mode 100644
index 000000000..b866b7f26
--- /dev/null
+++ b/devtools/dpdk.abignore
@@ -0,0 +1,2 @@
+[suppress_function]
+        symbol_version = EXPERIMENTAL
diff --git a/devtools/gen-abi-dump.sh b/devtools/gen-abi-dump.sh
new file mode 100755
index 000000000..4e38d751f
--- /dev/null
+++ b/devtools/gen-abi-dump.sh
@@ -0,0 +1,29 @@
+#!/bin/sh -e
+# SPDX-License-Identifier: BSD-3-Clause
+# Copyright (c) 2019 Red Hat, Inc.
+
+if [ $# != 2 ]; then
+	echo "Usage: $0 builddir dumpdir"
+	exit 1
+fi
+
+builddir=$1
+dumpdir=$2
+if [ ! -d $builddir ]; then
+	echo "Error: build directory '$builddir' does not exist."
+	exit 1
+fi
+if [ -d $dumpdir ]; then
+	echo "Error: dump directory '$dumpdir' already exists."
+	exit 1
+fi
+
+mkdir -p $dumpdir
+for f in $(find $builddir -name "*.so.*"); do
+	if test -L $f || [ "$f" != "${f%%.symbols}" ]; then
+		continue
+	fi
+
+	libname=$(basename $f)
+	abidw --out-file $dumpdir/${libname%.so.*}.dump $f
+done
diff --git a/devtools/gen-abi-reference.sh b/devtools/gen-abi-reference.sh
new file mode 100755
index 000000000..f41d7fadc
--- /dev/null
+++ b/devtools/gen-abi-reference.sh
@@ -0,0 +1,24 @@
+#!/bin/sh -e
+# SPDX-License-Identifier: BSD-3-Clause
+# Copyright (c) 2019 Red Hat, Inc.
+
+devtools_dir=$(dirname $(readlink -f $0))
+. $devtools_dir/load-devel-config
+
+abi_ref_build_dir=${DPDK_ABI_REF_BUILD_DIR:-reference}
+for dir in $abi_ref_build_dir/*; do
+	if [ "$dir" = "$abi_ref_build_dir" ]; then
+		exit 1
+	fi
+	if [ -d $dir/dump ]; then
+		echo "Skipping $dir"
+		continue
+	fi
+	if [ -d $dir/install ]; then
+		libdir=$dir/install
+	else
+		libdir=$dir
+	fi
+	echo "Dumping libraries from $libdir in $dir/dump"
+	$devtools_dir/gen-abi-dump.sh $libdir $dir/dump
+done
diff --git a/devtools/test-build.sh b/devtools/test-build.sh
index 52305fbb8..8cb5b56fb 100755
--- a/devtools/test-build.sh
+++ b/devtools/test-build.sh
@@ -30,7 +30,8 @@ default_path=$PATH
 # - LIBSSO_SNOW3G_PATH
 # - LIBSSO_KASUMI_PATH
 # - LIBSSO_ZUC_PATH
-. $(dirname $(readlink -f $0))/load-devel-config
+devtools_dir=$(dirname $(readlink -f $0))
+. $devtools_dir/load-devel-config
 
 print_usage () {
 	echo "usage: $(basename $0) [-h] [-jX] [-s] [config1 [config2] ...]]"
@@ -64,6 +65,7 @@ print_help () {
 [ -z $MAKE ] && echo "Cannot find make or gmake" && exit 1
 
 J=$DPDK_MAKE_JOBS
+abi_ref_build_dir=${DPDK_ABI_REF_BUILD_DIR:-reference}
 builds_dir=${DPDK_BUILD_TEST_DIR:-.}
 short=false
 unset verbose
@@ -97,7 +99,7 @@ trap "signal=INT ; trap - INT ; kill -INT $$" INT
 # notify result on exit
 trap on_exit EXIT
 
-cd $(dirname $(readlink -f $0))/..
+cd $devtools_dir/..
 
 reset_env ()
 {
@@ -233,7 +235,7 @@ for conf in $configs ; do
 	# reload config with DPDK_TARGET set
 	DPDK_TARGET=$target
 	reset_env
-	. $(dirname $(readlink -f $0))/load-devel-config
+	. $devtools_dir/load-devel-config
 
 	options=$(echo $conf | sed 's,[^~+]*,,')
 	dir=$builds_dir/$conf
@@ -246,6 +248,11 @@ for conf in $configs ; do
 	export RTE_TARGET=$target
 	rm -rf $dir/install
 	${MAKE} install O=$dir DESTDIR=$dir/install prefix=
+	if [ -d $abi_ref_build_dir/$conf/dump ]; then
+		echo "================== Check ABI $conf"
+		$devtools_dir/check-abi-dump.sh $dir/install \
+			$abi_ref_build_dir/$conf/dump
+	fi
 	echo "================== Build examples for $conf"
 	export RTE_SDK=$(readlink -f $dir)/install/share/dpdk
 	ln -sTf $(pwd)/lib $RTE_SDK/lib # workaround for vm_power_manager
diff --git a/devtools/test-meson-builds.sh b/devtools/test-meson-builds.sh
index 688567714..aaefa38a2 100755
--- a/devtools/test-meson-builds.sh
+++ b/devtools/test-meson-builds.sh
@@ -16,6 +16,7 @@ srcdir=$(dirname $(readlink -f $0))/..
 
 MESON=${MESON:-meson}
 use_shared="--default-library=shared"
+abi_ref_build_dir=${DPDK_ABI_REF_BUILD_DIR:-reference}
 builds_dir=${DPDK_BUILD_TEST_DIR:-.}
 
 if command -v gmake >/dev/null 2>&1 ; then
@@ -88,6 +89,11 @@ build () # <directory> <target compiler> <meson options>
 		echo "$ninja_cmd -C $builddir"
 		$ninja_cmd -C $builddir
 	fi
+
+	if [ -d $abi_ref_build_dir/$1/dump ]; then
+		$srcdir/devtools/check-abi-dump.sh $builddir
+			$abi_ref_build_dir/$1/dump
+	fi
 }
 
 if [ "$1" = "-vv" ] ; then
diff --git a/doc/guides/contributing/patches.rst b/doc/guides/contributing/patches.rst
index 0686450e4..de3dff145 100644
--- a/doc/guides/contributing/patches.rst
+++ b/doc/guides/contributing/patches.rst
@@ -513,6 +513,31 @@ in a single subfolder called "__builds" created in the current directory.
 Setting ``DPDK_BUILD_TEST_DIR`` to an absolute directory path e.g. ``/tmp`` is also supported.
 
 
+Checking ABI compatibility
+--------------------------
+
+The first thing is to build reference binaries for the latest release your
+patches are built on top of.
+
+Either you are in a git tree and an easy way to identify this is to run::
+
+  git checkout $(git describe --abbrev=0)
+
+Or you use a tarball and you extract the sources in a director of your choice.
+
+Next is building those sources, refer to the previous paragraph.
+You can set ``DPDK_BUILD_TEST_DIR=reference``, so that the builds occur in this
+directory.
+
+Finally, the ABI dump files are generated with the
+``devtools/gen-abi-reference.sh`` script. This script will look for builds in
+the current sub directory ``reference``. But you can set the environment
+variable ``DPDK_ABI_REF_BUILD_DIR`` to a different location.
+
+Once done, you can check your current binaries ABI with this reference with the
+``devtools/check-abi-reference.sh`` script.
+
+
 Sending Patches
 ---------------
 
-- 
2.23.0


             reply index

Thread overview: 104+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-12-20 15:20 David Marchand [this message]
2019-12-20 15:32 ` Richardson, Bruce
2019-12-20 16:20   ` Kinsella, Ray
2019-12-20 21:00     ` Thomas Monjalon
2020-01-06 13:17       ` Aaron Conole
2020-01-15 13:07         ` Burakov, Anatoly
2020-01-14 23:19     ` Thomas Monjalon
2020-01-15 11:33       ` Neil Horman
2020-01-15 12:38         ` Thomas Monjalon
2020-01-16 11:52           ` Neil Horman
2020-01-16 14:20             ` Thomas Monjalon
2020-01-16 18:49               ` Neil Horman
2020-01-16 20:01                 ` Thomas Monjalon
2020-01-17 19:01                   ` Neil Horman
2020-01-17 21:26                     ` David Marchand
2019-12-20 20:25 ` Neil Horman
2020-01-29 17:26 ` [dpdk-dev] [PATCH v2 0/4] " David Marchand
2020-01-29 17:26   ` [dpdk-dev] [PATCH v2 1/4] hash: fix meson headers packaging David Marchand
2020-01-30 10:12     ` Luca Boccassi
2020-01-30 10:54       ` David Marchand
2020-01-30 10:56         ` Luca Boccassi
2020-01-29 17:26   ` [dpdk-dev] [PATCH v2 2/4] build: split build helper David Marchand
2020-01-29 17:26   ` [dpdk-dev] [PATCH v2 3/4] build: test meson installation David Marchand
2020-01-29 17:26   ` [dpdk-dev] [PATCH v2 4/4] add ABI checks David Marchand
2020-01-29 17:42     ` Thomas Monjalon
2020-01-29 18:10       ` Anoob Joseph
2020-01-29 20:03         ` David Marchand
2020-01-29 20:13           ` Akhil Goyal
2020-01-30 16:09             ` Ferruh Yigit
2020-01-30 20:18               ` Thomas Monjalon
2020-01-31  9:03                 ` Ferruh Yigit
2020-01-31 10:26                   ` Ananyev, Konstantin
2020-01-31 14:16                 ` Trahe, Fiona
2020-02-02 13:05                   ` Thomas Monjalon
2020-02-02 14:41                     ` Ananyev, Konstantin
2020-02-03  9:30                       ` Ferruh Yigit
2020-02-03 11:50                         ` Neil Horman
2020-02-03 13:09                           ` Ferruh Yigit
2020-02-03 14:00                             ` Dodji Seketeli
2020-02-03 14:46                               ` Ferruh Yigit
2020-02-03 15:08                             ` Trahe, Fiona
2020-02-03 17:09                         ` Thomas Monjalon
2020-02-03 17:34                           ` Thomas Monjalon
2020-02-03 18:55                             ` Ray Kinsella
2020-02-03 21:07                               ` Thomas Monjalon
2020-02-04  9:46                                 ` Ferruh Yigit
2020-02-04 10:24                                 ` Thomas Monjalon
2020-02-04 12:44                                   ` Trahe, Fiona
2020-02-04 15:52                                     ` Trahe, Fiona
2020-02-04 15:59                                       ` Thomas Monjalon
2020-02-04 17:46                                         ` Trahe, Fiona
2020-02-13 14:51                                           ` Kusztal, ArkadiuszX
2020-03-16 12:57                                             ` Trahe, Fiona
2020-03-16 13:09                                               ` Thomas Monjalon
2020-03-17 13:27                                                 ` Kusztal, ArkadiuszX
2020-03-17 15:10                                                   ` Thomas Monjalon
2020-03-17 19:10                                                     ` Kusztal, ArkadiuszX
2020-02-04 12:57                                   ` Kevin Traynor
2020-02-04 14:44                                   ` Aaron Conole
2020-02-04 19:49                                     ` Neil Horman
2020-02-04  9:51                               ` David Marchand
2020-02-04 10:10                                 ` Trahe, Fiona
2020-02-04 10:38                                   ` Thomas Monjalon
2020-02-05 11:10                                 ` Ray Kinsella
2020-02-03 17:40                           ` Ferruh Yigit
2020-02-03 18:40                             ` Thomas Monjalon
2020-02-04  9:19                               ` Ferruh Yigit
2020-02-04  9:45                                 ` Thomas Monjalon
2020-02-04  9:56                                   ` Ferruh Yigit
2020-02-04 10:08                                     ` Bruce Richardson
2020-02-04 10:17                                     ` Kevin Traynor
2020-02-04 10:16                             ` Akhil Goyal
2020-02-04 10:28                               ` Thomas Monjalon
2020-02-04 10:32                                 ` Akhil Goyal
2020-02-04 11:35                                   ` Bruce Richardson
2020-02-04 22:10                                   ` Neil Horman
2020-02-05  6:16                                     ` [dpdk-dev] [EXT] " Anoob Joseph
2020-02-05 14:33                                       ` Trahe, Fiona
2020-02-04 21:59                               ` [dpdk-dev] " Neil Horman
2020-01-30 13:06         ` Trahe, Fiona
2020-01-30 15:59           ` Thomas Monjalon
2020-01-30 16:42             ` Ferruh Yigit
2020-01-30 23:49             ` Ananyev, Konstantin
2020-01-31  9:07               ` Ferruh Yigit
2020-01-31  9:37                 ` Ananyev, Konstantin
2020-01-30 10:57   ` [dpdk-dev] [PATCH v2 0/4] " Luca Boccassi
2020-01-30 16:00 ` [dpdk-dev] [PATCH v3 " David Marchand
2020-01-30 16:00   ` [dpdk-dev] [PATCH v3 1/4] hash: fix meson headers packaging David Marchand
2020-01-30 18:01     ` Wang, Yipeng1
2020-01-30 18:40       ` Honnappa Nagarahalli
2020-02-05 19:51         ` Wang, Yipeng1
2020-01-30 16:00   ` [dpdk-dev] [PATCH v3 2/4] build: split build helper David Marchand
2020-01-30 16:00   ` [dpdk-dev] [PATCH v3 3/4] build: test meson installation David Marchand
2020-01-30 22:17     ` Thomas Monjalon
2020-01-30 16:00   ` [dpdk-dev] [PATCH v3 4/4] add ABI checks David Marchand
2020-01-30 22:32     ` Thomas Monjalon
2020-02-01 15:29       ` David Marchand
2020-01-30 22:44     ` Thomas Monjalon
2020-02-02 21:08 ` [dpdk-dev] [PATCH v4 0/3] " David Marchand
2020-02-02 21:08   ` [dpdk-dev] [PATCH v4 1/3] hash: fix meson headers packaging David Marchand
2020-02-05 19:53     ` Wang, Yipeng1
2020-02-02 21:08   ` [dpdk-dev] [PATCH v4 2/3] build: split build helper David Marchand
2020-02-02 21:08   ` [dpdk-dev] [PATCH v4 3/3] add ABI checks David Marchand
2020-02-05 14:13   ` [dpdk-dev] [PATCH v4 0/3] " Thomas Monjalon

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