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Date: Thu, 6 May 2021 15:15:08 +0200
From: Frederic Weisbecker <frederic@...nel.org>
To: "Paul E . McKenney" <paulmck@...nel.org>
Cc: LKML <linux-kernel@...r.kernel.org>,
Frederic Weisbecker <frederic@...nel.org>
Subject: [PATCH 1/3] torture: Add --cmdline-to-config parameter to kvm.sh
While running rcutorture on bare metal, an easy way to test is to build
a kernel with the torture scenario parameters built-in using
CONFIG_CMDLINE="". This way the remote box can simply download the image
and the boot loader doesn't need to be updated with the new kernel
parameters.
Provide kvm.sh with --cmdline-to-config to perform that.
Signed-off-by: Frederic Weisbecker <frederic@...nel.org>
---
.../selftests/rcutorture/bin/configinit.sh | 13 +++++++
.../selftests/rcutorture/bin/kvm-build.sh | 4 ++-
.../rcutorture/bin/kvm-test-1-run.sh | 34 +++++++++++--------
tools/testing/selftests/rcutorture/bin/kvm.sh | 6 ++++
4 files changed, 41 insertions(+), 16 deletions(-)
diff --git a/tools/testing/selftests/rcutorture/bin/configinit.sh b/tools/testing/selftests/rcutorture/bin/configinit.sh
index d6e5ce084b1c..d2b8a68114e4 100755
--- a/tools/testing/selftests/rcutorture/bin/configinit.sh
+++ b/tools/testing/selftests/rcutorture/bin/configinit.sh
@@ -23,6 +23,8 @@ mkdir $T
c=$1
resdir=$2
+kboot_args=$3
+modprobe_args=$4
sed -e 's/^\(CONFIG[0-9A-Z_]*\)=.*$/grep -v "^# \1" |/' < $c > $T/u.sh
sed -e 's/^\(CONFIG[0-9A-Z_]*=\).*$/grep -v \1 |/' < $c >> $T/u.sh
@@ -35,6 +37,17 @@ fi
make $TORTURE_KMAKE_ARG $TORTURE_DEFCONFIG > $resdir/Make.defconfig.out 2>&1
mv .config .config.sav
sh $T/upd.sh < .config.sav > .config
+
+if test -n "$TORTURE_CMDLINE2CONFIG"
+then
+ cmdline=$(grep "CONFIG_CMDLINE=" .config | sed -E 's/CONFIG_CMDLINE="(.*)"/\1/')
+ prefixed_modprobe_args=$(echo $modprobe_args | sed -E -e "s/([^ ]+?)(=[^ ]*)?/rcutorture.\1\2/g")
+ cmdline="$kboot_args $prefixed_modprobe_args $cmdline"
+ grep -Ev "CONFIG_CMDLINE[= ]" .config > .config.sav
+ mv .config.sav .config
+ echo "CONFIG_CMDLINE=\""$cmdline"\"" >> .config
+fi
+
cp .config .config.new
yes '' | make $TORTURE_KMAKE_ARG oldconfig > $resdir/Make.oldconfig.out 2> $resdir/Make.oldconfig.err
diff --git a/tools/testing/selftests/rcutorture/bin/kvm-build.sh b/tools/testing/selftests/rcutorture/bin/kvm-build.sh
index 5ad973dca820..9eb4324d42e1 100755
--- a/tools/testing/selftests/rcutorture/bin/kvm-build.sh
+++ b/tools/testing/selftests/rcutorture/bin/kvm-build.sh
@@ -22,6 +22,8 @@ then
exit 1
fi
resdir=${2}
+kboot_args=${3}
+modprobe_args=${4}
T=${TMPDIR-/tmp}/test-linux.sh.$$
trap 'rm -rf $T' 0
@@ -34,7 +36,7 @@ CONFIG_VIRTIO_PCI=y
CONFIG_VIRTIO_CONSOLE=y
___EOF___
-configinit.sh $T/config $resdir
+configinit.sh $T/config $resdir "$kboot_args" "$modprobe_args"
retval=$?
if test $retval -gt 1
then
diff --git a/tools/testing/selftests/rcutorture/bin/kvm-test-1-run.sh b/tools/testing/selftests/rcutorture/bin/kvm-test-1-run.sh
index 420ed5ce9d32..e6aece69d81b 100755
--- a/tools/testing/selftests/rcutorture/bin/kvm-test-1-run.sh
+++ b/tools/testing/selftests/rcutorture/bin/kvm-test-1-run.sh
@@ -71,6 +71,24 @@ config_override_param "--kcsan options" KcList "$TORTURE_KCONFIG_KCSAN_ARG"
config_override_param "--kconfig argument" KcList "$TORTURE_KCONFIG_ARG"
cp $T/KcList $resdir/ConfigFragment
+seconds=$3
+qemu_args=$4
+boot_args_in=$5
+
+# Pull in Kconfig-fragment boot parameters
+boot_args="`configfrag_boot_params "$boot_args_in" "$config_template"`"
+# Generate kernel-version-specific boot parameters
+boot_args="`per_version_boot_params "$boot_args" $resdir/.config $seconds`"
+
+if test -n "$TORTURE_BOOT_GDB_ARG"
+then
+ boot_args="$boot_args $TORTURE_BOOT_GDB_ARG"
+fi
+
+modprobe_args="`echo $boot_args | tr -s ' ' '\012' | grep "^$TORTURE_MOD\." | sed -e "s/$TORTURE_MOD\.//g"`"
+kboot_args="`echo $boot_args | tr -s ' ' '\012' | grep -v "^$TORTURE_MOD\."`"
+
+
base_resdir=`echo $resdir | sed -e 's/\.[0-9]\+$//'`
if test "$base_resdir" != "$resdir" && test -f $base_resdir/bzImage && test -f $base_resdir/vmlinux
then
@@ -93,7 +111,7 @@ then
mv $resdir/build.wait $resdir/build.ready
fi
exit 1
-elif kvm-build.sh $T/KcList $resdir
+elif kvm-build.sh $T/KcList $resdir "$kboot_args" "$modprobe_args"
then
# Had to build a kernel for this test.
QEMU="`identify_qemu vmlinux`"
@@ -131,9 +149,6 @@ while test -f $resdir/build.ready
do
sleep 1
done
-seconds=$3
-qemu_args=$4
-boot_args_in=$5
if test -z "$TORTURE_BUILDONLY"
then
@@ -158,18 +173,7 @@ qemu_args="$qemu_args `identify_qemu_args "$QEMU" "$resdir/console.log"`"
# Generate qemu -append arguments
qemu_append="`identify_qemu_append "$QEMU"`"
-# Pull in Kconfig-fragment boot parameters
-boot_args="`configfrag_boot_params "$boot_args_in" "$config_template"`"
-# Generate kernel-version-specific boot parameters
-boot_args="`per_version_boot_params "$boot_args" $resdir/.config $seconds`"
-if test -n "$TORTURE_BOOT_GDB_ARG"
-then
- boot_args="$boot_args $TORTURE_BOOT_GDB_ARG"
-fi
-
# Give bare-metal advice
-modprobe_args="`echo $boot_args | tr -s ' ' '\012' | grep "^$TORTURE_MOD\." | sed -e "s/$TORTURE_MOD\.//g"`"
-kboot_args="`echo $boot_args | tr -s ' ' '\012' | grep -v "^$TORTURE_MOD\."`"
testid_txt="`dirname $resdir`/testid.txt"
touch $resdir/bare-metal
echo To run this scenario on bare metal: >> $resdir/bare-metal
diff --git a/tools/testing/selftests/rcutorture/bin/kvm.sh b/tools/testing/selftests/rcutorture/bin/kvm.sh
index b4ac4ee33222..a05a20135de1 100755
--- a/tools/testing/selftests/rcutorture/bin/kvm.sh
+++ b/tools/testing/selftests/rcutorture/bin/kvm.sh
@@ -33,6 +33,7 @@ TORTURE_ALLOTED_CPUS="`identify_qemu_vcpus`"
TORTURE_DEFCONFIG=defconfig
TORTURE_BOOT_IMAGE=""
TORTURE_BUILDONLY=
+TORTURE_CMDLINE2CONFIG=
TORTURE_INITRD="$KVM/initrd"; export TORTURE_INITRD
TORTURE_KCONFIG_ARG=""
TORTURE_KCONFIG_GDB_ARG=""
@@ -64,6 +65,7 @@ usage () {
echo " --bootargs kernel-boot-arguments"
echo " --bootimage relative-path-to-kernel-boot-image"
echo " --buildonly"
+ echo " --cmdline-to-config"
echo " --configs \"config-file list w/ repeat factor (3*TINY01)\""
echo " --cpus N"
echo " --datestamp string"
@@ -108,6 +110,9 @@ do
--buildonly|--build-only)
TORTURE_BUILDONLY=1
;;
+ --cmdline-to-config)
+ TORTURE_CMDLINE2CONFIG=1
+ ;;
--configs|--config)
checkarg --configs "(list of config files)" "$#" "$2" '^[^/.a-z]\+$' '^--'
configs="$configs $2"
@@ -388,6 +393,7 @@ PATH="$PATH"; export PATH
TORTURE_ALLOTED_CPUS="$TORTURE_ALLOTED_CPUS"; export TORTURE_ALLOTED_CPUS
TORTURE_BOOT_IMAGE="$TORTURE_BOOT_IMAGE"; export TORTURE_BOOT_IMAGE
TORTURE_BUILDONLY="$TORTURE_BUILDONLY"; export TORTURE_BUILDONLY
+TORTURE_CMDLINE2CONFIG="$TORTURE_CMDLINE2CONFIG"; export TORTURE_CMDLINE2CONFIG
TORTURE_DEFCONFIG="$TORTURE_DEFCONFIG"; export TORTURE_DEFCONFIG
TORTURE_INITRD="$TORTURE_INITRD"; export TORTURE_INITRD
TORTURE_KCONFIG_ARG="$TORTURE_KCONFIG_ARG"; export TORTURE_KCONFIG_ARG
--
2.25.1
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