Current status of allyesconfig and allmodconfig

[nathanchance]

I have decided to create this issue to track other various issues that prevent us from fully building an allyesconfig or allmodconfig build for certain architectures.

I think that getting some visibility on these and trying to get them addressed is important for trying to get more people involved with the project because a lot of people experiment with this through building their distribution's kernel, which will be much closer to allmodconfig than defconfig.

We do not have much visibility into these results aside from the reports that are sent to our mailing list from KernelCI (and it appears that they stopped doing clang builds?) because Travis won't be able to handle that kind of workload and I don't know of anyone else doing this kind of testing publicly.

Currently with clang at llvm/llvm-project@995c18f...

arm32 results

Target	5.5-rc6	next-20200113
allmodconfig	Success	Success
LD=ld.lld allmodconfig	Success	Success
allyesconfig	Failure	Failure
LD=ld.lld allyesconfig	Success	Success

arm64 results

Target	5.5-rc6	next-20200113
allmodconfig	Success	Success
LD=ld.lld allmodconfig	Success	Success
allyesconfig	Success	Success
LD=ld.lld allyesconfig	Failure	Failure

x86_64 results

Target	5.5-rc6	next-20200113
allmodconfig	Success	Success
LD=ld.lld allmodconfig	Failure	Failure
allyesconfig	Success	Success
LD=ld.lld allyesconfig	Success	Success

This is the script that I wrote to generate these results

LOG=$(mktemp --suffix=.log)

echo "Build log: ${LOG}"
echo

LE_CONFIG=$(mktemp --suffix=.config)
echo "CONFIG_CPU_BIG_ENDIAN=n" > "${LE_CONFIG}"

for ARCH in arm arm64 x86; do
    case ${ARCH} in
        "arm") MAKE_ARCH_ARGS=( ARCH=arm CROSS_COMPILE=arm-linux-gnueabi- KCONFIG_ALLCONFIG=${LE_CONFIG} ) ;;
        "arm64") MAKE_ARCH_ARGS=( ARCH=arm64 CROSS_COMPILE=aarch64-linux-gnu- KCONFIG_ALLCONFIG=${LE_CONFIG} ) ;;
        "x86") MAKE_ARCH_ARGS=( ) ;;
    esac

    for TREE in linux linux-next; do
        for TARGET in allyesconfig allmodconfig; do
            KMAKE=( make -C "${HOME}/src/${TREE}" -j$(nproc) -s CC=clang O=out "${MAKE_ARCH_ARGS[@]}" distclean "${TARGET}" all )
            {
                echo "${ARCH} ${TARGET} on ${TREE} with LD=ld.bfd build output:"
                echo
                PATH=${CBL_LLVM}:${CBL_BNTL}:${PATH} "${KMAKE[@]}" 2>&1
                EXIT_CODE=${?}
                echo
                echo "Build exit code: ${EXIT_CODE}"
                echo
                echo "${ARCH} ${TARGET} on ${TREE} with LD=ld.lld build output:"
                echo
                PATH=${CBL_LLVM}:${CBL_BNTL}:${PATH} "${KMAKE[@]}" LD=ld.lld 2>&1
                EXIT_CODE=${?}
                echo
                echo "Build exit code: ${EXIT_CODE}"
                echo
            } >> "${LOG}"
        done
    done
done

I do these builds every day but I think doing a build every Sunday (when the new RC hits) and reporting the results here would be kind of nice.

[nathanchance]

I will be posting -rc builds results in #1228 and issues like it from now on.