Linux v4.15

3 files changed, 314 insertions, 0 deletions

diff --git a/configs/build_configs.sh b/configs/build_configs.sh
new file mode 100755
index 000000000..15ab6b380
--- /dev/null
+++ b/configs/build_configs.sh
@@ -0,0 +1,137 @@
+#!/bin/bash
+#
+# This script merges together the hierarchy of CONFIG_* files under generic
+# and debug to form the necessary $PACKAGE_NAME<version>-<arch>-<variant>.config
+# files for building RHEL kernels, based on the contents of a control file
+
+PACKAGE_NAME="${1:-kernel}" # defines the package name used
+KVERREL="${2:-}"
+SUBARCH="${3:-}" # defines a specific arch
+SCRIPT="$(readlink -f $0)"
+OUTPUT_DIR="$PWD"
+SCRIPT_DIR="$(dirname $SCRIPT)"
+
+# to handle this script being a symlink
+cd $SCRIPT_DIR
+
+set errexit
+set nounset
+
+control_file="config_generation"
+
+cleanup()
+{
+	rm -f config-*
+}
+
+die()
+{
+	echo "$1"
+	cleanup
+	exit 1
+}
+
+function combine_config_layer()
+{
+	dir=$1
+	file="config-$(echo $dir | sed -e 's|/|-|g')"
+
+	if [ $(ls $dir/ | grep -c "^CONFIG_") -eq 0 ]; then
+		touch $file
+		return
+	fi
+
+	cat $dir/CONFIG_* > $file
+}
+
+function merge_configs()
+{
+	archvar=$1
+	arch=$(echo "$archvar" | cut -f1 -d"-")
+	configs=$2
+	order=$3
+	name=$OUTPUT_DIR/$PACKAGE_NAME-$archvar.config
+	echo -n "Building $name ... "
+	touch config-merging config-merged
+
+	# apply based on order
+	skip_if_missing=""
+	for o in $order
+	do
+		for config in $(echo $configs | sed -e 's/:/ /g')
+		do
+			cfile="config-$o-$config"
+
+			test -n "$skip_if_missing" && test ! -e $cfile && continue
+
+			perl merge.pl $cfile config-merging > config-merged
+			if [ ! $? -eq 0 ]; then
+				die "Failed to merge $cfile"
+			fi
+			mv config-merged config-merging
+		done
+
+		# first configs in $order is baseline, all files should be
+		# there.  second pass is overrides and can be missing.
+		skip_if_missing="1"
+	done
+	if [ "x$arch" == "xaarch64" ]; then
+		echo "# arm64" > $name
+	elif [ "x$arch" == "xppc64" ]; then
+		echo "# powerpc" > $name
+	elif [ "x$arch" == "xppc64le" ]; then
+		echo "# powerpc" > $name
+	elif [ "x$arch" == "xs390x" ]; then
+		echo "# s390" > $name
+	elif [ "x$arch" == "xarmv7hl" ]; then
+		echo "# arm" > $name
+	elif [ "x$arch" == "xi686" ]; then
+		echo "# i386" > $name
+	else
+		echo "# $arch" > $name
+	fi
+	sort config-merging >> $name
+	rm -f config-merged config-merging
+	echo "done"
+}
+
+while read line
+do
+	if [ $(echo "$line" | grep -c "^#") -ne 0 ]; then
+		continue
+	elif [ $(echo "$line" | grep -c "^$") -ne 0 ]; then
+		continue
+	elif [ $(echo "$line" | grep -c "^ORDER") -ne 0 ]; then
+		order=$(echo "$line" | cut -f2 -d"=")
+		for o in $order
+		do
+			glist=$(find $o -type d)
+			for d in $glist
+			do
+				combine_config_layer $d
+			done
+		done
+	else
+		arch=$(echo "$line" | cut -f1 -d"=")
+		configs=$(echo "$line" | cut -f2 -d"=")
+
+		if [ -n "$SUBARCH" -a "$SUBARCH" != "$arch" ]; then
+			continue
+		fi
+
+		merge_configs $arch $configs "$order"
+	fi
+done < $control_file
+
+# A passed in kernel version implies copy to final location
+# otherwise defer to another script
+if test -n "$KVERREL"
+then
+	for i in kernel-*.config
+	do
+		NEW="$(echo $i | sed "s/$PACKAGE_NAME-$SUBARCH/$PACKAGE_NAME-$KVERREL-$SUBARCH/")"
+		mv $i $NEW
+	done
+fi
+
+cleanup
diff --git a/configs/config_generation b/configs/config_generation
new file mode 100644
index 000000000..e8614c43f
--- /dev/null
+++ b/configs/config_generation
@@ -0,0 +1,41 @@
+# config-variant=config:config:config
+# kernel.config files are build on the fly based on this config,
+# the first arg is arch and variant, the second is a hierarchy of
+# config options, lowest priority to highest
+
+# tells the build_configs.sh which order to build the configs.
+# this is useful when providing a separate overrides directory.
+# do not use quotes and space separate the directories.
+ORDER=fedora
+
+# x86_64
+x86_64=generic:generic-x86:generic-x86-x86_64
+x86_64-debug=generic:generic-x86:generic-x86-x86_64:debug:debug-x86:debug-x86-x86_64
+
+# i686
+i686=generic:generic-x86:generic-x86-i686
+i686-debug=generic:generic-x86:generic-x86-i686:debug:debug-x86
+i686-PAE=generic:generic-x86:generic-x86-i686PAE
+i686-PAEdebug=generic:generic-x86:generic-x86-i686PAE:debug:debug-x86
+
+# ppc64
+ppc64=generic:generic-powerpc:generic-powerpc-powerpc64
+ppc64-debug=generic:generic-powerpc:generic-powerpc-powerpc64:debug
+
+# ppc64le
+ppc64le=generic:generic-powerpc:generic-powerpc-powerpc64le
+ppc64le-debug=generic:generic-powerpc:generic-powerpc-powerpc64le:debug
+
+# s390x
+s390x=generic:generic-s390x
+s390x-debug=generic:generic-s390x:debug
+
+# aarch64
+aarch64=generic:generic-arm:generic-arm-aarch64
+aarch64-debug=generic:generic-arm:generic-arm-aarch64:debug:debug-arm
+
+# arm
+armv7hl=generic:generic-arm:generic-arm-armv7:generic-arm-armv7-armv7
+armv7hl-debug=generic:generic-arm:generic-arm-armv7:generic-arm-armv7-armv7:debug:debug-arm
+armv7hl-lpae=generic:generic-arm:generic-arm-armv7:generic-arm-armv7-lpae
+armv7hl-lpae-debug=generic:generic-arm:generic-arm-armv7:generic-arm-armv7-lpae:debug:debug-arm
diff --git a/configs/process_configs.sh b/configs/process_configs.sh
new file mode 100755
index 000000000..4de45d65a
--- /dev/null
+++ b/configs/process_configs.sh
@@ -0,0 +1,136 @@
+#!/bin/bash
+#
+# This script takes the merged config files and processes them through oldconfig
+# and listnewconfig
+
+
+die()
+{
+	echo "$1"
+	exit 1
+}
+
+# stupid function to find top of tree to do kernel make configs
+switch_to_toplevel()
+{
+	path="$(pwd)"
+	while test -n "$path"
+	do
+		test -d $path/firmware && \
+			test -e $path/MAINTAINERS && \
+			test -d $path/drivers && \
+			break
+
+		path="$(dirname $path)"
+	done
+
+	test -n "$path"  || die "Can't find toplevel"
+	echo "$path"
+}
+
+checkoptions()
+{
+	/usr/bin/awk '
+
+		/is not set/ {
+			split ($0, a, "#");
+			split(a[2], b);
+			if (NR==FNR) {
+				configs[b[1]]="is not set";
+			} else {
+				if (configs[b[1]] != "" && configs[b[1]] != "is not set")
+					 print "Found # "b[1] " is not set, after generation, had " b[1] " " configs[b[1]] " in Source tree";
+			}
+		}
+
+		/=/     {
+			split ($0, a, "=");
+			if (NR==FNR) {
+				configs[a[1]]=a[2];
+			} else {
+				if (configs[a[1]] != "" && configs[a[1]] != a[2])
+					 print "Found "a[1]"="configs[a[1]]" after generation, had " a[1]"="a[2]" in Source tree";
+			}
+		}
+	' $1 $2 > .mismatches
+
+	if test -s .mismatches
+	then
+		echo "Error: Mismatches found in configuration files"
+		cat .mismatches
+		exit 1
+	fi
+}
+
+function process_configs()
+{
+	# assume we are in $source_tree/configs, need to get to top level
+	pushd $(switch_to_toplevel)
+
+	for cfg in $SCRIPT_DIR/${PACKAGE_NAME}${KVERREL}${SUBARCH}*.config
+	do
+		arch=$(head -1 $cfg | cut -b 3-)
+		cfgtmp="${cfg}.tmp"
+		cfgorig="${cfg}.orig"
+		cat $cfg > $cfgorig
+
+		echo -n "Processing $cfg ... "
+
+		# an empty grep is good but leaves a return value, so use # 'true' to bypass
+		make ARCH=$arch KCONFIG_CONFIG=$cfg listnewconfig | grep -E 'CONFIG_' > .newoptions || true
+		if test -n "$NEWOPTIONS" && test -s .newoptions
+		then
+			echo "Found unset config items, please set them to an appropriate value"
+			cat .newoptions
+			rm .newoptions
+			exit 1
+		fi
+		rm .newoptions
+
+		make ARCH=$arch KCONFIG_CONFIG=$cfg oldnoconfig > /dev/null || exit 1
+		echo "# $arch" > ${cfgtmp}
+		cat "${cfg}" >> ${cfgtmp}
+		if test -n "$CHECKOPTIONS"
+		then
+			checkoptions $cfgtmp $cfgorig
+		fi
+		mv ${cfgtmp} ${cfg}
+		rm ${cfgorig}
+		echo "done"
+	done
+	rm "$SCRIPT_DIR"/*.config.old
+	popd > /dev/null
+
+	echo "Processed config files are in $SCRIPT_DIR"
+}
+
+NEWOPTIONS=""
+CHECKOPTIONS=""
+
+while [[ $# -gt 0 ]]
+do
+	key="$1"
+	case $key in
+		-n)
+			NEWOPTIONS="x"
+			;;
+		-c)
+			CHECKOPTIONS="x"
+			;;
+		*)
+			break;;
+	esac
+	shift
+done
+
+PACKAGE_NAME="${1:-kernel}" # defines the package name used
+KVERREL="$(test -n "$2" && echo "-$2" || echo "")"
+SUBARCH="$(test -n "$3" && echo "-$3" || echo "")"
+SCRIPT="$(readlink -f $0)"
+OUTPUT_DIR="$PWD"
+SCRIPT_DIR="$(dirname $SCRIPT)"
+
+# to handle this script being a symlink
+cd $SCRIPT_DIR
+
+process_configs