From: Andy Fleming Date: Tue, 24 Apr 2012 19:33:51 +0000 (+0000) Subject: Allow for parallel builds and saved output X-Git-Url: http://git.dujemihanovic.xyz/img/sics.gif?a=commitdiff_plain;h=f588bb034d5d3a0417f45965f1aba4d4cf8a2893;p=u-boot.git Allow for parallel builds and saved output The MAKEALL script cleverly runs make with the appropriate options to use all of the cores on the system, but your average U-Boot build can't make much use of more than a few cores. If you happen to have a many-core server, your builds will leave most of the system idle. In order to make full use of such a system, we need to build multiple targets in parallel, and this requires directing make output into multiple directories. We add a BUILD_NBUILDS variable, which allows users to specify how many builds to run in parallel. When BUILD_NBUILDS is set greater than 1, we redefine BUILD_DIR for each build to be ${BUILD_DIR}/${target}. Also, we make "./build" the default BUILD_DIR when BUILD_NBUILDS is greater than 1. MAKEALL now tracks which builds are still running, and when one finishes, it starts a new build. Once each build finishes, we run "make tidy" on its directory, to reduce the footprint. As a result, we are left with a build directory with all of the built targets still there for use, which means anyone who wanted to use MAKEALL as part of a test harness can now do so. Signed-off-by: Andy Fleming --- diff --git a/MAKEALL b/MAKEALL index e5da6f1859..e6c801cbb8 100755 --- a/MAKEALL +++ b/MAKEALL @@ -34,6 +34,7 @@ usage() CROSS_COMPILE cross-compiler toolchain prefix (default: "") MAKEALL_LOGDIR output all logs to here (default: ./LOG/) BUILD_DIR output build directory (default: ./) + BUILD_NBUILDS number of parallel targets (default: 1) Examples: - build all Power Architecture boards: @@ -178,11 +179,22 @@ else LOG_DIR="LOG" fi -if [ ! "${BUILD_DIR}" ] ; then - BUILD_DIR="." +: ${BUILD_NBUILDS:=1} +BUILD_MANY=0 + +if [ "${BUILD_NBUILDS}" -gt 1 ] ; then + BUILD_MANY=1 + : ${BUILD_DIR:=./build} + mkdir -p "${BUILD_DIR}/ERR" + find "${BUILD_DIR}/ERR/" -type f -exec rm -f {} + fi -[ -d ${LOG_DIR} ] || mkdir ${LOG_DIR} || exit 1 +: ${BUILD_DIR:=.} + +OUTPUT_PREFIX="${BUILD_DIR}" + +[ -d ${LOG_DIR} ] || mkdir "${LOG_DIR}" || exit 1 +find "${LOG_DIR}/" -type f -exec rm -f {} + LIST="" @@ -190,6 +202,8 @@ LIST="" ERR_CNT=0 ERR_LIST="" TOTAL_CNT=0 +CURRENT_CNT=0 +OLDEST_IDX=1 RC=0 # Helper funcs for parsing boards.cfg @@ -592,8 +606,26 @@ list_target() { echo "" } +# Each finished build will have a file called ${donep}${n}, +# where n is the index of the build. Each build +# we've already noted as finished will have ${skipp}${n}. +# The code managing the build process will use this information +# to ensure that only BUILD_NBUILDS builds are in flight at once +donep="${LOG_DIR}/._done_" +skipp="${LOG_DIR}/._skip_" + build_target() { target=$1 + build_idx=$2 + + if [ $BUILD_MANY == 1 ] ; then + output_dir="${OUTPUT_PREFIX}/${target}" + mkdir -p "${output_dir}" + else + output_dir="${OUTPUT_PREFIX}" + fi + + export BUILD_DIR="${output_dir}" if [ "$ONLY_LIST" == 'y' ] ; then list_target ${target} @@ -603,30 +635,75 @@ build_target() { ${MAKE} distclean >/dev/null ${MAKE} -s ${target}_config - ${MAKE} ${JOBS} all 2>&1 >${LOG_DIR}/$target.MAKELOG \ - | tee ${LOG_DIR}/$target.ERR + ${MAKE} ${JOBS} all \ + >${LOG_DIR}/$target.MAKELOG 2> ${LOG_DIR}/$target.ERR # Check for 'make' errors if [ ${PIPESTATUS[0]} -ne 0 ] ; then RC=1 fi - if [ -s ${LOG_DIR}/$target.ERR ] ; then - ERR_CNT=$((ERR_CNT + 1)) - ERR_LIST="${ERR_LIST} $target" + if [ $BUILD_MANY == 1 ] ; then + ${MAKE} tidy + + if [ -s ${LOG_DIR}/${target}.ERR ] ; then + touch ${OUTPUT_PREFIX}/ERR/${target} + else + rm ${LOG_DIR}/${target}.ERR + fi else - rm ${LOG_DIR}/$target.ERR + if [ -s ${LOG_DIR}/${target}.ERR ] ; then + : $(( ERR_CNT += 1 )) + ERR_LIST="${ERR_LIST} $target" + else + rm ${LOG_DIR}/${target}.ERR + fi fi - TOTAL_CNT=$((TOTAL_CNT + 1)) - - OBJS=${BUILD_DIR}/u-boot - if [ -e ${BUILD_DIR}/spl/u-boot-spl ]; then - OBJS="${OBJS} ${BUILD_DIR}/spl/u-boot-spl" + OBJS=${output_dir}/u-boot + if [ -e ${output_dir}/spl/u-boot-spl ]; then + OBJS="${OBJS} ${output_dir}/spl/u-boot-spl" fi ${CROSS_COMPILE}size ${OBJS} | tee -a ${LOG_DIR}/$target.MAKELOG + + [ -e "${LOG_DIR}/${target}.ERR" ] && cat "${LOG_DIR}/${target}.ERR" + + #echo "Writing ${donep}${build_idx}" + touch "${donep}${build_idx}" } + +manage_builds() { + search_idx=${OLDEST_IDX} + #echo "Searching ${OLDEST_IDX} to ${TOTAL_CNT}" + while true; do + if [ -e "${donep}${search_idx}" ] ; then + # echo "Found ${donep}${search_idx}" + : $(( CURRENT_CNT-- )) + [ ${OLDEST_IDX} -eq ${search_idx} ] && + : $(( OLDEST_IDX++ )) + + # Only want to count it once + rm -f "${donep}${search_idx}" + touch "${skipp}${search_idx}" + elif [ -e "${skipp}${search_idx}" ] ; then + [ ${OLDEST_IDX} -eq ${search_idx} ] && + : $(( OLDEST_IDX++ )) + fi + #echo "Checking search ${search_idx} vs ${TOTAL_CNT}" + : $(( search_idx++ )) + if [ ${search_idx} -gt ${TOTAL_CNT} ] ; then + #echo "Checking current ${CURRENT_CNT} vs ${BUILD_NBUILDS}" + if [ ${CURRENT_CNT} -ge ${BUILD_NBUILDS} ] ; then + search_idx=${OLDEST_IDX} + sleep 1 + else + break + fi + fi + done +} + build_targets() { for t in "$@" ; do # If a LIST_xxx var exists, use it. But avoid variable @@ -639,7 +716,26 @@ build_targets() { if [ -n "${list}" ] ; then build_targets ${list} else - build_target ${t} + : $((TOTAL_CNT += 1)) + : $((CURRENT_CNT += 1)) + rm -f "${donep}${TOTAL_CNT}" + rm -f "${skipp}${TOTAL_CNT}" + build_target ${t} ${TOTAL_CNT} & + fi + + # We maintain a running count of all the builds we have done. + # Each finished build will have a file called ${donep}${n}, + # where n is the index of the build. Each build + # we've already noted as finished will have ${skipp}${n}. + # We track the current index via TOTAL_CNT, and the oldest + # index. When we exceed the maximum number of parallel builds, + # We look from oldest to current for builds that have completed, + # and update the current count and oldest index as appropriate. + # If we've gone through the entire list, wait a second, and + # reprocess the entire list until we find a build that has + # completed + if [ ${CURRENT_CNT} -ge ${BUILD_NBUILDS} ] ; then + manage_builds fi done } @@ -648,6 +744,16 @@ build_targets() { print_stats() { if [ "$ONLY_LIST" == 'y' ] ; then return ; fi + + rm -f ${donep}* ${skipp}* + + if [ $BUILD_MANY == 1 ] && [ -e "${OUTPUT_PREFIX}/ERR" ] ; then + ERR_LIST=$(ls ${OUTPUT_PREFIX}/ERR/) + ERR_CNT=`ls -1 ${OUTPUT_PREFIX}/ERR/ | wc | awk '{print $1}'` + else + ERR_CNT=0 + fi + echo "" echo "--------------------- SUMMARY ----------------------------" echo "Boards compiled: ${TOTAL_CNT}" @@ -666,3 +772,4 @@ set -- ${SELECTED} "$@" # run PowerPC by default [ $# = 0 ] && set -- powerpc build_targets "$@" +wait