mirror of
https://github.com/linuxkit/linuxkit.git
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baf32846d8
The perf utility is somewhat kernel specific so might as well compile it when we compile the kernel. The resulting binary is statically linked (and stripped for size) and is added the resulting kernel packages. Although we add alpine packages such as libunwind and other, it seems that the config detection code for perf/tools does not detect them. Signed-off-by: Rolf Neugebauer <rolf.neugebauer@docker.com>
109 lines
3.2 KiB
Docker
109 lines
3.2 KiB
Docker
FROM linuxkit/alpine:4f0ddee221c46f142e5a190dd43d2e07256ef98d AS kernel-build
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RUN apk add \
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argp-standalone \
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automake \
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bash \
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bc \
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binutils-dev \
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bison \
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build-base \
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curl \
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diffutils \
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elfutils-dev \
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flex \
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git \
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gmp-dev \
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installkernel \
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kmod \
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libelf-dev \
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libressl-dev \
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libunwind-dev \
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linux-headers \
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ncurses-dev \
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sed \
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squashfs-tools \
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tar \
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xz \
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xz-dev \
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zlib-dev \
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|| true
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ARG KERNEL_VERSION
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ARG KERNEL_SERIES
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ARG DEBUG
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ENV KERNEL_SOURCE=https://www.kernel.org/pub/linux/kernel/v4.x/linux-${KERNEL_VERSION}.tar.xz
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RUN curl -fsSL -o linux-${KERNEL_VERSION}.tar.xz ${KERNEL_SOURCE}
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RUN cat linux-${KERNEL_VERSION}.tar.xz | tar --absolute-names -xJ && mv /linux-${KERNEL_VERSION} /linux
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COPY kernel_config-${KERNEL_SERIES} /linux/arch/x86/configs/x86_64_defconfig
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COPY kernel_config.debug /linux/debug_config
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RUN if [ -n "${DEBUG}" ]; then \
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sed -i 's/CONFIG_PANIC_ON_OOPS=y/# CONFIG_PANIC_ON_OOPS is not set/' /linux/arch/x86/configs/x86_64_defconfig; \
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cat /linux/debug_config >> /linux/arch/x86/configs/x86_64_defconfig; \
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fi
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# Apply local patches
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COPY patches-${KERNEL_SERIES} /patches
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WORKDIR /linux
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RUN set -e && for patch in /patches/*.patch; do \
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echo "Applying $patch"; \
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patch -p1 < "$patch"; \
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done
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RUN mkdir /out
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# Kernel
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RUN make defconfig && \
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make oldconfig && \
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make -j "$(getconf _NPROCESSORS_ONLN)" KCFLAGS="-fno-pie" && \
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cp arch/x86_64/boot/bzImage /out/kernel && \
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cp System.map /out && \
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([ -n "${DEBUG}" ] && cp vmlinux /out || true)
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# Modules
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RUN make INSTALL_MOD_PATH=/tmp/kernel-modules modules_install && \
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( DVER=$(basename $(find /tmp/kernel-modules/lib/modules/ -mindepth 1 -maxdepth 1)) && \
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cd /tmp/kernel-modules/lib/modules/$DVER && \
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rm build source && \
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ln -s /usr/src/linux-headers-$DVER build ) && \
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( cd /tmp/kernel-modules && tar cf /out/kernel.tar lib )
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# Headers (userspace API)
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RUN mkdir -p /tmp/kernel-headers/usr && \
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make INSTALL_HDR_PATH=/tmp/kernel-headers/usr headers_install && \
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( cd /tmp/kernel-headers && tar cf /out/kernel-headers.tar usr )
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# Headers (kernel development)
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RUN DVER=$(basename $(find /tmp/kernel-modules/lib/modules/ -mindepth 1 -maxdepth 1)) && \
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dir=/tmp/usr/src/linux-headers-$DVER && \
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mkdir -p $dir && \
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cp /linux/.config $dir && \
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cp /linux/Module.symvers $dir && \
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find . -path './include/*' -prune -o \
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-path './arch/*/include' -prune -o \
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-path './scripts/*' -prune -o \
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-type f \( -name 'Makefile*' -o -name 'Kconfig*' -o -name 'Kbuild*' -o \
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-name '*.lds' -o -name '*.pl' -o -name '*.sh' \) | \
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tar cf - -T - | (cd $dir; tar xf -) && \
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( cd /tmp && tar cf /out/kernel-dev.tar usr/src )
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RUN printf "KERNEL_SOURCE=${KERNEL_SOURCE}\n" > /out/kernel-source-info
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# perf (Don't compile for 4.4.x, it's broken and tedious to fix)
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RUN if [ "${KERNEL_SERIES}" != "4.4.x" ]; then \
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mkdir -p /build/perf && \
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make -C tools/perf LDFLAGS=-static O=/build/perf && \
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strip /build/perf/perf && \
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cp /build/perf/perf /out; \
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fi
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FROM scratch
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ENTRYPOINT []
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CMD []
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WORKDIR /
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COPY --from=kernel-build /out/* /
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