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#!/bin/bash
# SPDX-License-Identifier: GPL-2.0
# perf archive
# Arnaldo Carvalho de Melo <acme@redhat.com>
PERF_DATA=perf.data
PERF_SYMBOLS=perf.symbols
PERF_ALL=perf.all
ALL=0
UNPACK=0
while [ $# -gt 0 ] ; do
if [ $1 == "--all" ]; then
ALL=1
shift
elif [ $1 == "--unpack" ]; then
UNPACK=1
shift
else
PERF_DATA=$1
UNPACK_TAR=$1
shift
fi
done
if [ $UNPACK -eq 1 ]; then
if [ ! -z "$UNPACK_TAR" ]; then # tar given as an argument
if [ ! -e "$UNPACK_TAR" ]; then
echo "Provided file $UNPACK_TAR does not exist"
exit 1
fi
TARGET="$UNPACK_TAR"
else # search for perf tar in the current directory
TARGET=`find . -regex "\./perf.*\.tar\.bz2"`
TARGET_NUM=`echo -n "$TARGET" | grep -c '^'`
if [ -z "$TARGET" -o $TARGET_NUM -gt 1 ]; then
echo -e "Error: $TARGET_NUM files found for unpacking:\n$TARGET"
echo "Provide the requested file as an argument"
exit 1
else
echo "Found target file for unpacking: $TARGET"
fi
fi
if [[ "$TARGET" =~ (\./)?$PERF_ALL.*.tar.bz2 ]]; then # perf tar generated by --all option
TAR_CONTENTS=`tar tvf "$TARGET" | tr -s " " | cut -d " " -f 6`
VALID_TAR=`echo "$TAR_CONTENTS" | grep "$PERF_SYMBOLS.tar.bz2" | wc -l` # check if it contains a sub-tar perf.symbols
if [ $VALID_TAR -ne 1 ]; then
echo "Error: $TARGET file is not valid (contains zero or multiple sub-tar files with debug symbols)"
exit 1
fi
INTERSECT=`comm -12 <(ls) <(echo "$TAR_CONTENTS") | tr "\n" " "` # check for overwriting
if [ ! -z "$INTERSECT" ]; then # prompt if file(s) already exist in the current directory
echo "File(s) ${INTERSECT::-1} already exist in the current directory."
while true; do
read -p 'Do you wish to overwrite them? ' yn
case $yn in
[Yy]* ) break;;
[Nn]* ) exit 1;;
* ) echo "Please answer yes or no.";;
esac
done
fi
# unzip the perf.data file in the current working directory and debug symbols in ~/.debug directory
tar xvf $TARGET && tar xvf $PERF_SYMBOLS.tar.bz2 -C ~/.debug
else # perf tar generated by perf archive (contains only debug symbols)
tar xvf $TARGET -C ~/.debug
fi
exit 0
fi
#
# PERF_BUILDID_DIR environment variable set by perf
# path to buildid directory, default to $HOME/.debug
#
if [ -z $PERF_BUILDID_DIR ]; then
PERF_BUILDID_DIR=~/.debug/
else
# append / to make substitutions work
PERF_BUILDID_DIR=$PERF_BUILDID_DIR/
fi
BUILDIDS=$(mktemp /tmp/perf-archive-buildids.XXXXXX)
perf buildid-list -i $PERF_DATA --with-hits | grep -v "^ " > $BUILDIDS
if [ ! -s $BUILDIDS ] ; then
echo "perf archive: no build-ids found"
rm $BUILDIDS || true
exit 1
fi
MANIFEST=$(mktemp /tmp/perf-archive-manifest.XXXXXX)
PERF_BUILDID_LINKDIR=$(readlink -f $PERF_BUILDID_DIR)/
cut -d ' ' -f 1 $BUILDIDS | \
while read build_id ; do
linkname=$PERF_BUILDID_DIR.build-id/${build_id:0:2}/${build_id:2}
filename=$(readlink -f $linkname)
echo ${linkname#$PERF_BUILDID_DIR} >> $MANIFEST
echo ${filename#$PERF_BUILDID_LINKDIR} >> $MANIFEST
done
if [ $ALL -eq 1 ]; then # pack perf.data file together with tar containing debug symbols
HOSTNAME=$(hostname)
DATE=$(date '+%Y%m%d-%H%M%S')
tar cjf $PERF_SYMBOLS.tar.bz2 -C $PERF_BUILDID_DIR -T $MANIFEST
tar cjf $PERF_ALL-$HOSTNAME-$DATE.tar.bz2 $PERF_DATA $PERF_SYMBOLS.tar.bz2
rm $PERF_SYMBOLS.tar.bz2 $MANIFEST $BUILDIDS || true
else # pack only the debug symbols
tar cjf $PERF_DATA.tar.bz2 -C $PERF_BUILDID_DIR -T $MANIFEST
rm $MANIFEST $BUILDIDS || true
fi
echo -e "Now please run:\n"
echo -e "$ perf archive --unpack\n"
echo "or unpack the tar manually wherever you need to run 'perf report' on."
exit 0
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