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ee4d74aca6
In particular, let's start with a defconfig and edit it, rather than try to generate the config entirely from our own diff. Signed-off-by: Tycho Andersen <tycho@docker.com>
77 lines
2.2 KiB
Bash
Executable File
77 lines
2.2 KiB
Bash
Executable File
#!/bin/bash
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set -e
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ARCH=$1
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KERNEL_SERIES=$2
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DEBUG=$3
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cd /linux && make defconfig
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function merge_config()
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{
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config=$1
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if [ ! -f "$config" ]; then
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return
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fi
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# A slightly more intelligent merge algorithm: rather than just catting
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# files together (and getting random results), let's explicitly delete the
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# old setting, and then insert our new one.
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while read line; do
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if echo ${line} | grep "is not set" >/dev/null; then
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cfg=$(echo ${line/ is not set/} | cut -c3-)
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else
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cfg=$(echo ${line} | cut -f1 -d=)
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fi
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sed -i -e "/${cfg} is not set/d" -e "/${cfg}=/d" /linux/.config
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echo ${line} >> /linux/.config
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done < "$config"
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}
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cd /linux && make defconfig && make oldconfig
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merge_config "/config/kernel_config.base"
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merge_config "/config/kernel_config.${ARCH}"
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merge_config "/config/kernel_config.${KERNEL_SERIES}"
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merge_config "/config/kernel_config.${ARCH}.${KERNEL_SERIES}"
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if [ -n "${DEBUG}" ]; then
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sed -i 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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append_config "/config/kernel_config.debug"
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fi
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cd /linux && make oldconfig
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# Let's make sure things are the way we want, i.e. every option we explicitly
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# set is set the same way in the resulting config.
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function check_config()
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{
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if [ ! -f "$1" ]; then return; fi
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while read line; do
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if [ -n "${DEBUG}" ] && [ "$line" == "CONFIG_PANIC_ON_OOPS=y" ]; then continue; fi
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value="$(grep "^${line}$" /linux/.config || true)"
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# It's okay to for the merging script to have simply not listed values we
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# require to be unset.
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if echo "${line}" | grep "is not set" >/dev/null && [ "$value" = "" ]; then
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continue
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fi
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if [ "${value}" = "${line}" ]; then
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continue
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fi
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echo "$line set incorrectly" && false
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done < $1
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}
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check_config "/config/kernel_config.base"
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check_config "/config/kernel_config.${ARCH}"
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check_config "/config/kernel_config.${KERNEL_SERIES}"
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check_config "/config/kernel_config.${ARCH}.${KERNEL_SERIES}"
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if [ -n "${DEBUG}" ]; then
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check_config "/config/kernel_config.debug"
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fi
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