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Archives generated by the command 'perf archive' have to be unpacked manually. Following the addition of option '--all' now there also exist a nested structure of tars, and after further discussion with Red Hat Global Support Services, they found a feature correctly unpacking archives of 'perf archive' convenient. Option '--unpack' of 'perf archive' unpacks archives generated by the command 'perf archive' as well as archives generated when used with option '--all'. The 'perf.data' file is placed in the current directory, while debug symbols are unpacked in '~/.debug' directory. A tar filename can be passed as an argument, and if not provided the command tries to find a viable perf.tar file for unpacking. Signed-off-by: Veronika Molnarova <vmolnaro@redhat.com> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Michael Petlan <mpetlan@redhat.com> Link: https://lore.kernel.org/r/20231212165909.14459-2-vmolnaro@redhat.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
121 lines
3.6 KiB
Bash
Executable file
121 lines
3.6 KiB
Bash
Executable file
#!/bin/bash
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# SPDX-License-Identifier: GPL-2.0
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# perf archive
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# Arnaldo Carvalho de Melo <acme@redhat.com>
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PERF_DATA=perf.data
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PERF_SYMBOLS=perf.symbols
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PERF_ALL=perf.all
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ALL=0
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UNPACK=0
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while [ $# -gt 0 ] ; do
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if [ $1 == "--all" ]; then
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ALL=1
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shift
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elif [ $1 == "--unpack" ]; then
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UNPACK=1
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shift
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else
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PERF_DATA=$1
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UNPACK_TAR=$1
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shift
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fi
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done
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if [ $UNPACK -eq 1 ]; then
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if [ ! -z "$UNPACK_TAR" ]; then # tar given as an argument
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if [ ! -e "$UNPACK_TAR" ]; then
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echo "Provided file $UNPACK_TAR does not exist"
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exit 1
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fi
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TARGET="$UNPACK_TAR"
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else # search for perf tar in the current directory
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TARGET=`find . -regex "\./perf.*\.tar\.bz2"`
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TARGET_NUM=`echo -n "$TARGET" | grep -c '^'`
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if [ -z "$TARGET" -o $TARGET_NUM -gt 1 ]; then
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echo -e "Error: $TARGET_NUM files found for unpacking:\n$TARGET"
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echo "Provide the requested file as an argument"
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exit 1
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else
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echo "Found target file for unpacking: $TARGET"
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fi
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fi
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if [[ "$TARGET" =~ (\./)?$PERF_ALL.*.tar.bz2 ]]; then # perf tar generated by --all option
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TAR_CONTENTS=`tar tvf "$TARGET" | tr -s " " | cut -d " " -f 6`
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VALID_TAR=`echo "$TAR_CONTENTS" | grep "$PERF_SYMBOLS.tar.bz2" | wc -l` # check if it contains a sub-tar perf.symbols
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if [ $VALID_TAR -ne 1 ]; then
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echo "Error: $TARGET file is not valid (contains zero or multiple sub-tar files with debug symbols)"
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exit 1
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fi
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INTERSECT=`comm -12 <(ls) <(echo "$TAR_CONTENTS") | tr "\n" " "` # check for overwriting
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if [ ! -z "$INTERSECT" ]; then # prompt if file(s) already exist in the current directory
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echo "File(s) ${INTERSECT::-1} already exist in the current directory."
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while true; do
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read -p 'Do you wish to overwrite them? ' yn
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case $yn in
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[Yy]* ) break;;
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[Nn]* ) exit 1;;
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* ) echo "Please answer yes or no.";;
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esac
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done
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fi
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# unzip the perf.data file in the current working directory and debug symbols in ~/.debug directory
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tar xvf $TARGET && tar xvf $PERF_SYMBOLS.tar.bz2 -C ~/.debug
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else # perf tar generated by perf archive (contains only debug symbols)
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tar xvf $TARGET -C ~/.debug
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fi
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exit 0
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fi
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#
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# PERF_BUILDID_DIR environment variable set by perf
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# path to buildid directory, default to $HOME/.debug
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#
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if [ -z $PERF_BUILDID_DIR ]; then
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PERF_BUILDID_DIR=~/.debug/
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else
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# append / to make substitutions work
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PERF_BUILDID_DIR=$PERF_BUILDID_DIR/
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fi
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BUILDIDS=$(mktemp /tmp/perf-archive-buildids.XXXXXX)
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perf buildid-list -i $PERF_DATA --with-hits | grep -v "^ " > $BUILDIDS
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if [ ! -s $BUILDIDS ] ; then
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echo "perf archive: no build-ids found"
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rm $BUILDIDS || true
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exit 1
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fi
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MANIFEST=$(mktemp /tmp/perf-archive-manifest.XXXXXX)
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PERF_BUILDID_LINKDIR=$(readlink -f $PERF_BUILDID_DIR)/
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cut -d ' ' -f 1 $BUILDIDS | \
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while read build_id ; do
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linkname=$PERF_BUILDID_DIR.build-id/${build_id:0:2}/${build_id:2}
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filename=$(readlink -f $linkname)
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echo ${linkname#$PERF_BUILDID_DIR} >> $MANIFEST
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echo ${filename#$PERF_BUILDID_LINKDIR} >> $MANIFEST
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done
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if [ $ALL -eq 1 ]; then # pack perf.data file together with tar containing debug symbols
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HOSTNAME=$(hostname)
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DATE=$(date '+%Y%m%d-%H%M%S')
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tar cjf $PERF_SYMBOLS.tar.bz2 -C $PERF_BUILDID_DIR -T $MANIFEST
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tar cjf $PERF_ALL-$HOSTNAME-$DATE.tar.bz2 $PERF_DATA $PERF_SYMBOLS.tar.bz2
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rm $PERF_SYMBOLS.tar.bz2 $MANIFEST $BUILDIDS || true
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else # pack only the debug symbols
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tar cjf $PERF_DATA.tar.bz2 -C $PERF_BUILDID_DIR -T $MANIFEST
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rm $MANIFEST $BUILDIDS || true
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fi
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echo -e "Now please run:\n"
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echo -e "$ perf archive --unpack\n"
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echo "or unpack the tar manually wherever you need to run 'perf report' on."
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exit 0
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