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| author | Chanho Park <chanho61.park@samsung.com> | 2012-04-02 15:28:29 +0900 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2012-04-14 13:52:15 -0300 |
| commit | e3b6193378e8549d04849eda496129f94406ed36 (patch) | |
| tree | ed3651e6a3cc1c0b64207c7298761f50ee0958df | |
| parent | 77394ad6e465ee3cc3d3cf448c8500c57ced60bf (diff) | |
| download | op-kernel-dev-e3b6193378e8549d04849eda496129f94406ed36.zip op-kernel-dev-e3b6193378e8549d04849eda496129f94406ed36.tar.gz | |
perf archive: Correct cutting of symbolic link
If a '$PERF_BUILDID_DIR'(typically $HOME/.debug) is a symbolic link
directory, cutting of the path will fail.
Here is an example where a buildid directory is a symbolic link.
/ # ls -al /root
lrwxrwxrwx 1 root root 13 Mar 26 2012 /root -> opt/home/root
/ # cd ~
/opt/home/root # perf record -a -g sleep 1
[ perf record: Woken up 1 times to write data ]
[ perf record: Captured and wrote 0.322 MB perf.data (~14057 samples) ]
/opt/home/root # perf archive
tar: Removing leading `/' from member names
Now please run:
$ tar xvf perf.data.tar.bz2 -C ~/.debug
wherever you need to run 'perf report' on.
/opt/home/root # mkdir temp
/opt/home/root # tar xf perf.data.tar.bz2 -C ./temp
/opt/home/root # find ./temp -name "*kernel*"
./temp/opt/home/root/.debug/[kernel.kallsyms]
-> If successfully cut off the path, [kernel.kallsyms] is located
in top of the archived file.
This patch enables to cut correctly even if the buildid directory
is a symbolic link.
Signed-off-by: Chanho Park <chanho61.park@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Kyungmin Park <kyungmin.park@samsung.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1333348109-12598-1-git-send-email-chanho61.park@samsung.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| -rw-r--r-- | tools/perf/perf-archive.sh | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/tools/perf/perf-archive.sh b/tools/perf/perf-archive.sh index 677e59d..95b6f8b 100644 --- a/tools/perf/perf-archive.sh +++ b/tools/perf/perf-archive.sh @@ -29,13 +29,14 @@ if [ ! -s $BUILDIDS ] ; then fi MANIFEST=$(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_DIR} >> $MANIFEST + echo ${filename#$PERF_BUILDID_LINKDIR} >> $MANIFEST done tar cfj $PERF_DATA.tar.bz2 -C $PERF_BUILDID_DIR -T $MANIFEST |
