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https://github.com/JakeHillion/scx.git
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This script iterates over a list archs and generates vmlinux.h for each. Generated files are put under the corresponding arch directory Signed-off-by: Ming Yang <minos.future@gmail.com>
113 lines
3.7 KiB
Bash
Executable File
113 lines
3.7 KiB
Bash
Executable File
#!/bin/bash
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# Prerequisite
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#
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# * .config is ready in the linux repo
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# * binary bpftool is installed
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# * can `sudo apt install` cross-compile toolchains
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#
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# Example
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#
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# ./scripts/gen_vmlinux_h.sh /path/to/linux ./sched/include/arch/
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LINUX_REPO="$1" # where the linux repo is located
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pushd ${LINUX_REPO}
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INCLUDE_TARGET=$2 # target directory, e.g., /path/to/scx/sched/include/arch/
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HASH=$(git rev-parse HEAD)
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SHORT_SHA=${HASH:0:12} # full SHA of the commit truncated to 12 chars
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LINUX_VER=$(git describe --tags --abbrev=0)
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# List of architectures and their corresponding cross-compilers
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declare -A ARCHS
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ARCHS=(
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[x86]="x86_64-linux-gnu-"
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[arm]="arm-linux-gnueabi-"
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[arm64]="aarch64-linux-gnu-"
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[mips]="mips64-linux-gnu-"
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[powerpc]="powerpc64le-linux-gnu-"
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[riscv]="riscv64-linux-gnu-"
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[s390]="s390x-linux-gnu-"
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)
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# Detect and install cross-compile toolchains based on the package manager
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install_toolchains() {
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echo "Installing cross-compile toolchains..."
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if command -v apt &> /dev/null; then
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sudo apt update && sudo apt install -y \
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gcc-aarch64-linux-gnu gcc-x86-64-linux-gnu \
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gcc-arm-linux-gnueabi gcc-mips64-linux-gnuabi64 \
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gcc-powerpc64le-linux-gnu gcc-riscv64-linux-gnu \
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gcc-s390x-linux-gnu
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elif command -v dnf &> /dev/null; then
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sudo dnf install -y \
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gcc-aarch64-linux-gnu gcc-x86_64-linux-gnu \
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gcc-arm-linux-gnu gcc-mips64-linux-gnuabi64 \
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gcc-powerpc64-linux-gnu gcc-riscv64-linux-gnu \
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gcc-s390x-linux-gnu
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elif command -v yum &> /dev/null; then
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sudo yum install -y \
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gcc-aarch64-linux-gnu gcc-x86_64-linux-gnu \
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gcc-arm-linux-gnu gcc-mips64-linux-gnuabi64 \
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gcc-powerpc64-linux-gnu gcc-riscv64-linux-gnu \
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gcc-s390x-linux-gnu
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elif command -v pacman &> /dev/null; then
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sudo pacman -Sy --noconfirm \
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aarch64-linux-gnu-gcc x86_64-linux-gnu-gcc \
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arm-linux-gnueabi-gcc mips64-linux-gnu-gcc \
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powerpc64le-linux-gnu-gcc riscv64-linux-gnu-gcc \
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s390x-linux-gnu-gcc
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elif command -v zypper &> /dev/null; then
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sudo zypper install -y \
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gcc-aarch64-linux-gnu gcc-x86_64-linux-gnu \
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gcc-arm-linux-gnueabi gcc-mips64-linux-gnuabi64 \
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gcc-powerpc64le-linux-gnu gcc-riscv64-linux-gnu \
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gcc-s390x-linux-gnu
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else
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echo "Unsupported package manager. Please install cross-compilers manually."
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exit 1
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fi
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}
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# Function to compile the kernel and generate vmlinux.h for a given architecture
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generate_vmlinux_for_arch() {
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ARCH=$1
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CROSS_COMPILE=${ARCHS[$ARCH]}
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TARGET_DIR=${INCLUDE_TARGET}/${ARCH}
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OUTPUT_FILE="${TARGET_DIR}/vmlinux-${LINUX_VER}-g${SHORT_SHA}.h"
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mkdir -p ${TARGET_DIR}
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LOG="/tmp/${ARCH}.log"
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echo "" > ${LOG}
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echo "Writing compile logs to ${LOG}"
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make ARCH=${ARCH} CROSS_COMPILE=${CROSS_COMPILE} olddefconfig 2>&1 >> ${LOG}
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make ARCH=${ARCH} CROSS_COMPILE=${CROSS_COMPILE} -j$(nproc) vmlinux 2>&1 >> ${LOG}
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if [ -f ./vmlinux ]; then
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echo "Generating ${OUTPUT_FILE}..."
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bpftool btf dump file ./vmlinux format c > "${OUTPUT_FILE}"
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echo "${OUTPUT_FILE} generated successfully."
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else
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echo "Failed to generate vmlinux for ${ARCH}. Please check the compilation process."
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fi
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}
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if ! command -v bpftool &> /dev/null
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then
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echo "bpftool could not be found. Please install it first."
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exit 1
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fi
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install_toolchains
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echo "Start generating vmlinux.h for each arch: "
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for ARCH in "${!ARCHS[@]}"; do
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echo "Processing architecture: $ARCH"
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generate_vmlinux_for_arch $ARCH
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done
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echo "All architectures processed."
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popd
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