forked from mirrors/linux
ec4d0a7680
A non-existent build-id used to be treated as all-zero SHA-1 hash. Build-ids are now variable width. A non-existent build-id is an empty string and "perf buildid-list" pads this with spaces. This is true even when using old perf.data files recorded from older versions of perf; "perf buildid-list" never reports an all-zero hash anymore. This fixes "perf-archive" to skip missing build-ids by skipping lines that start with a padding space rather than with zeroes. Signed-off-by: Nicholas Fraser <nfraser@codeweavers.com> Acked-by: Jiri Olsa <jolsa@redhat.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Huw Davies <huw@codeweavers.com> Cc: Ian Rogers <irogers@google.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Ulrich Czekalla <uczekalla@codeweavers.com> Link: https://lore.kernel.org/r/442bffc7-ac5c-0975-b876-a549efce2413@codeweavers.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
|
|
# SPDX-License-Identifier: GPL-2.0
|
|
# perf archive
|
|
# Arnaldo Carvalho de Melo <acme@redhat.com>
|
|
|
|
PERF_DATA=perf.data
|
|
if [ $# -ne 0 ] ; then
|
|
PERF_DATA=$1
|
|
fi
|
|
|
|
#
|
|
# PERF_BUILDID_DIR environment variable set by perf
|
|
# path to buildid directory, default to $HOME/.debug
|
|
#
|
|
if [ -z $PERF_BUILDID_DIR ]; then
|
|
PERF_BUILDID_DIR=~/.debug/
|
|
else
|
|
# append / to make substitutions work
|
|
PERF_BUILDID_DIR=$PERF_BUILDID_DIR/
|
|
fi
|
|
|
|
BUILDIDS=$(mktemp /tmp/perf-archive-buildids.XXXXXX)
|
|
|
|
perf buildid-list -i $PERF_DATA --with-hits | grep -v "^ " > $BUILDIDS
|
|
if [ ! -s $BUILDIDS ] ; then
|
|
echo "perf archive: no build-ids found"
|
|
rm $BUILDIDS || true
|
|
exit 1
|
|
fi
|
|
|
|
MANIFEST=$(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_LINKDIR} >> $MANIFEST
|
|
done
|
|
|
|
tar cjf $PERF_DATA.tar.bz2 -C $PERF_BUILDID_DIR -T $MANIFEST
|
|
rm $MANIFEST $BUILDIDS || true
|
|
echo -e "Now please run:\n"
|
|
echo -e "$ tar xvf $PERF_DATA.tar.bz2 -C ~/.debug\n"
|
|
echo "wherever you need to run 'perf report' on."
|
|
exit 0
|