87 lines
1.7 KiB
Plaintext
87 lines
1.7 KiB
Plaintext
|
#!/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
|