scripts/atomic/check-atomics.sh

0001 #!/bin/sh
0002 # SPDX-License-Identifier: GPL-2.0
0003 #
0004 # Check if atomic headers are up-to-date
0005
0006 ATOMICDIR=$(dirname $0)
0007 ATOMICTBL=${ATOMICDIR}/atomics.tbl
0008 LINUXDIR=${ATOMICDIR}/../..
0009
0010 echo '' | sha1sum - > /dev/null 2>&1
0011 if [ $? -ne 0 ]; then
0012         printf "sha1sum not available, skipping atomic header checks.\n"
0013         exit 0
0014 fi
0015
0016 cat <<EOF |
0017 linux/atomic/atomic-instrumented.h
0018 linux/atomic/atomic-long.h
0019 linux/atomic/atomic-arch-fallback.h
0020 EOF
0021 while read header; do
0022         OLDSUM="$(tail -n 1 ${LINUXDIR}/include/${header})"
0023         OLDSUM="${OLDSUM#// }"
0024
0025         NEWSUM="$(sed '$d' ${LINUXDIR}/include/${header} | sha1sum)"
0026         NEWSUM="${NEWSUM%% *}"
0027
0028         if [ "${OLDSUM}" != "${NEWSUM}" ]; then
0029                 printf "warning: generated include/${header} has been modified.\n"
0030         fi
0031 done
0032
0033 exit 0