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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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45de34bbe3
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 <davem@davemloft.net> Cc: Frédéric Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Cc: Tom Zanussi <tzanussi@gmail.com> LKML-Reference: <4c055fb7.df0ce30a.5f0d.ffffae52@mx.google.com> Signed-off-by: Stephane Eranian <eranian@google.com> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
47 lines
1.2 KiB
Bash
47 lines
1.2 KiB
Bash
#!/bin/bash
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# perf archive
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# Arnaldo Carvalho de Melo <acme@redhat.com>
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PERF_DATA=perf.data
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if [ $# -ne 0 ] ; then
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PERF_DATA=$1
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fi
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#
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# PERF_BUILDID_DIR environment variable set by perf
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# path to buildid directory, default to $HOME/.debug
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#
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if [ -z $PERF_BUILDID_DIR ]; then
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PERF_BUILDID_DIR=~/.debug/
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else
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# append / to make substitutions work
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PERF_BUILDID_DIR=$PERF_BUILDID_DIR/
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fi
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BUILDIDS=$(mktemp /tmp/perf-archive-buildids.XXXXXX)
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NOBUILDID=0000000000000000000000000000000000000000
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perf buildid-list -i $PERF_DATA --with-hits | grep -v "^$NOBUILDID " > $BUILDIDS
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if [ ! -s $BUILDIDS ] ; then
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echo "perf archive: no build-ids found"
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rm -f $BUILDIDS
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exit 1
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fi
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MANIFEST=$(mktemp /tmp/perf-archive-manifest.XXXXXX)
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cut -d ' ' -f 1 $BUILDIDS | \
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while read build_id ; do
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linkname=$PERF_BUILDID_DIR.build-id/${build_id:0:2}/${build_id:2}
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filename=$(readlink -f $linkname)
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echo ${linkname#$PERF_BUILDID_DIR} >> $MANIFEST
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echo ${filename#$PERF_BUILDID_DIR} >> $MANIFEST
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done
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tar cfj $PERF_DATA.tar.bz2 -C $PERF_BUILDID_DIR -T $MANIFEST
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rm -f $MANIFEST $BUILDIDS
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echo -e "Now please run:\n"
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echo -e "$ tar xvf $PERF_DATA.tar.bz2 -C ~/.debug\n"
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echo "wherever you need to run 'perf report' on."
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exit 0
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