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" ] || [ $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
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