From: Chanho Park Date: Mon, 2 Apr 2012 06:28:29 +0000 (+0900) Subject: perf archive: Correct cutting of symbolic link X-Git-Tag: v3.4-rc4~37^2~1^2 X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=e3b6193378e8549d04849eda496129f94406ed36;p=pandora-kernel.git 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 Signed-off-by: Kyungmin Park Cc: Ingo Molnar Cc: Kyungmin Park Cc: Paul Mackerras Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/1333348109-12598-1-git-send-email-chanho61.park@samsung.com Signed-off-by: Arnaldo Carvalho de Melo --- Reading git-diff-tree failed