path: root/tools/perf/
diff options
authorStephane Eranian <>2010-06-01 21:25:01 +0200
committerArnaldo Carvalho de Melo <>2010-06-05 09:34:04 -0300
commit45de34bbe3e1b8f4c8bc8ecaf6c915b4b4c545f8 (patch)
treeb141c0c68d668db2f718cdb6c6f1adcb351776c0 /tools/perf/
parent8e5564e6c7554902301543e731354ad2ad58ae53 (diff)
perf buildid: add perfconfig option to specify buildid cache dir
This patch adds the ability to specify an alternate directory to store the buildid cache (buildids, copy of binaries). By default, it is hardcoded to $HOME/.debug. This directory contains immutable data. The layout of the directory is such that no conflicts in filenames are possible. A modification in a file, yields a different buildid and thus a different location in the subdir hierarchy. You may want to put the buildid cache elsewhere because of disk space limitation or simply to share the cache between users. It is also useful for remote collect vs. local analysis of profiles. This patch adds a new config option to the perfconfig file. Under the tag 'buildid', there is a dir option. For instance, if you have: $ cat /etc/perfconfig [buildid] dir = /var/cache/perf-buildid All buildids and binaries are be saved in the directory specified. The perf record, buildid-list, buildid-cache, report, annotate, and archive commands will it to pull information out. The option can be set in the system-wide perfconfig file or in the $HOME/.perfconfig file. Cc: David S. Miller <> Cc: Frédéric Weisbecker <> Cc: Ingo Molnar <> Cc: Paul Mackerras <> Cc: Peter Zijlstra <> Cc: Stephane Eranian <> Cc: Tom Zanussi <> LKML-Reference: <> Signed-off-by: Stephane Eranian <> Signed-off-by: Arnaldo Carvalho de Melo <>
Diffstat (limited to 'tools/perf/')
1 files changed, 15 insertions, 5 deletions
diff --git a/tools/perf/ b/tools/perf/
index 2e7a4f417e20..677e59d62a8d 100644
--- a/tools/perf/
+++ b/tools/perf/
@@ -7,7 +7,17 @@ if [ $# -ne 0 ] ; then
+# PERF_BUILDID_DIR environment variable set by perf
+# path to buildid directory, default to $HOME/.debug
+if [ -z $PERF_BUILDID_DIR ]; then
+ PERF_BUILDID_DIR=~/.debug/
+ # append / to make substitutions work
BUILDIDS=$(mktemp /tmp/perf-archive-buildids.XXXXXX)
@@ -22,13 +32,13 @@ MANIFEST=$(mktemp /tmp/perf-archive-manifest.XXXXXX)
cut -d ' ' -f 1 $BUILDIDS | \
while read build_id ; do
- linkname=$${build_id:0:2}/${build_id:2}
+ linkname=$${build_id:0:2}/${build_id:2}
filename=$(readlink -f $linkname)
- echo ${linkname#$DEBUGDIR} >> $MANIFEST
- echo ${filename#$DEBUGDIR} >> $MANIFEST
+ echo ${linkname#$PERF_BUILDID_DIR} >> $MANIFEST
+ echo ${filename#$PERF_BUILDID_DIR} >> $MANIFEST
-tar cfj $PERF_DATA.tar.bz2 -C $DEBUGDIR -T $MANIFEST
echo -e "Now please run:\n"
echo -e "$ tar xvf $PERF_DATA.tar.bz2 -C ~/.debug\n"