tools/perf/perf-archive.sh

   1 #!/bin/bash
   2 # SPDX-License-Identifier: GPL-2.0
   3 # perf archive
   4 # Arnaldo Carvalho de Melo <acme@redhat.com>
   5
   6 PERF_DATA=perf.data
   7 PERF_SYMBOLS=perf.symbols
   8 PERF_ALL=perf.all
   9 ALL=0
  10 UNPACK=0
  11
  12 while [ $# -gt 0 ] ; do
  13         if [ $1 == "--all" ]; then
  14                 ALL=1
  15                 shift
  16         elif [ $1 == "--unpack" ]; then
  17                 UNPACK=1
  18                 shift
  19         else
  20                 PERF_DATA=$1
  21                 UNPACK_TAR=$1
  22                 shift
  23         fi
  24 done
  25
  26 if [ $UNPACK -eq 1 ]; then
  27         if [ ! -z "$UNPACK_TAR" ]; then                                 # tar given as an argument
  28                 if [ ! -e "$UNPACK_TAR" ]; then
  29                         echo "Provided file $UNPACK_TAR does not exist"
  30                         exit 1
  31                 fi
  32                 TARGET="$UNPACK_TAR"
  33         else                                                                                                                            # search for perf tar in the current directory
  34                 TARGET=`find . -regex "\./perf.*\.tar\.bz2"`
  35                 TARGET_NUM=`echo -n "$TARGET" | grep -c '^'`
  36
  37                 if [ -z "$TARGET" -o $TARGET_NUM -gt 1 ]; then
  38                         echo -e "Error: $TARGET_NUM files found for unpacking:\n$TARGET"
  39                         echo "Provide the requested file as an argument"
  40                         exit 1
  41                 else
  42                         echo "Found target file for unpacking: $TARGET"
  43                 fi
  44         fi
  45
  46         if [[ "$TARGET" =~ (\./)?$PERF_ALL.*.tar.bz2 ]]; then                           # perf tar generated by --all option
  47                 TAR_CONTENTS=`tar tvf "$TARGET" | tr -s " " | cut -d " " -f 6`
  48                 VALID_TAR=`echo "$TAR_CONTENTS" | grep "$PERF_SYMBOLS.tar.bz2" | wc -l`         # check if it contains a sub-tar perf.symbols
  49                 if [ $VALID_TAR -ne 1 ]; then
  50                         echo "Error: $TARGET file is not valid (contains zero or multiple sub-tar files with debug symbols)"
  51                         exit 1
  52                 fi
  53
  54                 INTERSECT=`comm -12 <(ls) <(echo "$TAR_CONTENTS") | tr "\n" " "`        # check for overwriting
  55                 if [ ! -z "$INTERSECT" ]; then                                                                          # prompt if file(s) already exist in the current directory
  56                         echo "File(s) ${INTERSECT::-1} already exist in the current directory."
  57                         while true; do
  58                                 read -p 'Do you wish to overwrite them? ' yn
  59                                 case $yn in
  60                                         [Yy]* ) break;;
  61                                         [Nn]* ) exit 1;;
  62                                         * ) echo "Please answer yes or no.";;
  63                                 esac
  64                         done
  65                 fi
  66
  67                 # unzip the perf.data file in the current working directory     and debug symbols in ~/.debug directory
  68                 tar xvf $TARGET && tar xvf $PERF_SYMBOLS.tar.bz2 -C ~/.debug
  69
  70         else                                                                                                                            # perf tar generated by perf archive (contains only debug symbols)
  71                 tar xvf $TARGET -C ~/.debug
  72         fi
  73         exit 0
  74 fi
  75
  76 #
  77 # PERF_BUILDID_DIR environment variable set by perf
  78 # path to buildid directory, default to $HOME/.debug
  79 #
  80 if [ -z $PERF_BUILDID_DIR ]; then
  81         PERF_BUILDID_DIR=~/.debug/
  82 else
  83         # append / to make substitutions work
  84         PERF_BUILDID_DIR=$PERF_BUILDID_DIR/
  85 fi
  86
  87 BUILDIDS=$(mktemp /tmp/perf-archive-buildids.XXXXXX)
  88
  89 perf buildid-list -i $PERF_DATA --with-hits | grep -v "^ " > $BUILDIDS
  90 if [ ! -s $BUILDIDS ] ; then
  91         echo "perf archive: no build-ids found"
  92         rm $BUILDIDS || true
  93         exit 1
  94 fi
  95
  96 MANIFEST=$(mktemp /tmp/perf-archive-manifest.XXXXXX)
  97 PERF_BUILDID_LINKDIR=$(readlink -f $PERF_BUILDID_DIR)/
  98
  99 cut -d ' ' -f 1 $BUILDIDS | \
 100 while read build_id ; do
 101         linkname=$PERF_BUILDID_DIR.build-id/${build_id:0:2}/${build_id:2}
 102         filename=$(readlink -f $linkname)
 103         echo ${linkname#$PERF_BUILDID_DIR} >> $MANIFEST
 104         echo ${filename#$PERF_BUILDID_LINKDIR} >> $MANIFEST
 105 done
 106
 107 if [ $ALL -eq 1 ]; then                                         # pack perf.data file together with tar containing debug symbols
 108         HOSTNAME=$(hostname)
 109         DATE=$(date '+%Y%m%d-%H%M%S')
 110         tar cjf $PERF_SYMBOLS.tar.bz2 -C $PERF_BUILDID_DIR -T $MANIFEST
 111         tar cjf $PERF_ALL-$HOSTNAME-$DATE.tar.bz2 $PERF_DATA $PERF_SYMBOLS.tar.bz2
 112         rm $PERF_SYMBOLS.tar.bz2 $MANIFEST $BUILDIDS || true
 113 else                                                                            # pack only the debug symbols
 114         tar cjf $PERF_DATA.tar.bz2 -C $PERF_BUILDID_DIR -T $MANIFEST
 115         rm $MANIFEST $BUILDIDS || true
 116 fi
 117
 118 echo -e "Now please run:\n"
 119 echo -e "$ perf archive --unpack\n"
 120 echo "or unpack the tar manually wherever you need to run 'perf report' on."
 121 exit 0