#!/bin/bash# SPDX-License-Identifier: GPL-2.0-only# Translate the bits making up a GFP mask# (c) 2009, Mel Gorman <mel@csn.ul.ie>SOURCE=GFPMASK=none# Helper function to report failures and exitdie() { echo ERROR: $@ if [ "$TMPFILE" != "" ]; then rm -f $TMPFILE fi exit -1}usage() { echo "usage: gfp-translate [-h] [ --source DIRECTORY ] gfpmask" exit 0}# Parse command-line argumentswhile [ $# -gt 0 ]; do case $1 in --source) SOURCE=$2 shift 2 ;; -h) usage ;; --help) usage ;; *) GFPMASK=$1 shift ;; esacdone# Guess the kernel source directory if it's not set. Preference is in order of# o current directory# o /usr/src/linuxif [ "$SOURCE" = "" ]; then if [ -r "/usr/src/linux/Makefile" ]; then SOURCE=/usr/src/linux fi if [ -r "`pwd`/Makefile" ]; then SOURCE=`pwd` fifi# Confirm that a source directory existsif [ ! -r "$SOURCE/Makefile" ]; then die "Could not locate kernel source directory or it is invalid"fi# Confirm that a GFP mask has been specifiedif [ "$GFPMASK" = "none" ]; then usagefi# Extract GFP flags from the kernel sourceTMPFILE=`mktemp -t gfptranslate-XXXXXX` || exit 1grep -q ___GFP $SOURCE/include/linux/gfp.hif [ $? -eq 0 ]; then grep "^#define ___GFP" $SOURCE/include/linux/gfp.h | sed -e 's/u$//' | grep -v GFP_BITS > $TMPFILEelse grep "^#define __GFP" $SOURCE/include/linux/gfp.h | sed -e 's/(__force gfp_t)//' | sed -e 's/u)/)/' | grep -v GFP_BITS | sed -e 's/)\//) \//' > $TMPFILEfi# Parse the flagsIFS=""echo Source: $SOURCEecho Parsing: $GFPMASKfor LINE in `cat $TMPFILE`; do MASK=`echo $LINE | awk '{print $3}'` if [ $(($GFPMASK&$MASK)) -ne 0 ]; then echo $LINE fidonerm -f $TMPFILEexit 0
#!/bin/bash
# SPDX-License-Identifier: GPL-2.0-only
# Translate the bits making up a GFP mask
# (c) 2009, Mel Gorman <mel@csn.ul.ie>
SOURCE=
GFPMASK=none
# Helper function to report failures and exit
die() {
echo ERROR: $@
if [ "$TMPFILE" != "" ]; then
rm -f $TMPFILE
fi
exit -1
}
usage() {
echo "usage: gfp-translate [-h] [ --source DIRECTORY ] gfpmask"
exit 0
}
# Parse command-line arguments
while [ $# -gt 0 ]; do
case $1 in
--source)
SOURCE=$2
shift 2
;;
-h)
usage
;;
--help)
usage
;;
*)
GFPMASK=$1
shift
;;
esac
done
# Guess the kernel source directory if it's not set. Preference is in order of
# o current directory
# o /usr/src/linux
if [ "$SOURCE" = "" ]; then
if [ -r "/usr/src/linux/Makefile" ]; then
SOURCE=/usr/src/linux
fi
if [ -r "`pwd`/Makefile" ]; then
SOURCE=`pwd`
fi
fi
# Confirm that a source directory exists
if [ ! -r "$SOURCE/Makefile" ]; then
die "Could not locate kernel source directory or it is invalid"
fi
# Confirm that a GFP mask has been specified
if [ "$GFPMASK" = "none" ]; then
usage
fi
# Extract GFP flags from the kernel source
TMPFILE=`mktemp -t gfptranslate-XXXXXX` || exit 1
grep -q ___GFP $SOURCE/include/linux/gfp.h
if [ $? -eq 0 ]; then
grep "^#define ___GFP" $SOURCE/include/linux/gfp.h | sed -e 's/u$//' | grep -v GFP_BITS > $TMPFILE
else
grep "^#define __GFP" $SOURCE/include/linux/gfp.h | sed -e 's/(__force gfp_t)//' | sed -e 's/u)/)/' | grep -v GFP_BITS | sed -e 's/)\//) \//' > $TMPFILE
fi
# Parse the flags
IFS="
"
echo Source: $SOURCE
echo Parsing: $GFPMASK
for LINE in `cat $TMPFILE`; do
MASK=`echo $LINE | awk '{print $3}'`
if [ $(($GFPMASK&$MASK)) -ne 0 ]; then
echo $LINE
fi
done
rm -f $TMPFILE
exit 0