Commit 78b2c50c authored Oct 13, 2020 by Jiri Olsa Committed by Arnaldo Carvalho de Melo Oct 14, 2020

perf test: Add build id shell test



Add a test for the build id cache that adds a binary with sha1 and md5
build ids and verifies it's added properly.

The test updates build id cache with 'perf record' and 'perf buildid-cache -a'.

Committer testing:

  # perf test "build id"
  82: build id cache operations                                       : Ok
  #
  # perf test -v "build id"
  82: build id cache operations                                       :
  --- start ---
  test child forked, pid 447218
  test binaries: /tmp/perf.ex.SHA1.B8I /tmp/perf.ex.MD5.7Nv
  Adding d1abc1eb7568358cf23c959566f23462461834d1 /tmp/perf.ex.SHA1.B8I: Ok
  build id: d1abc1eb7568358cf23c959566f23462461834d1
  link: /tmp/perf.debug.sS2/.build-id/d1/abc1eb7568358cf23c959566f23462461834d1
  file: /tmp/perf.debug.sS2/.build-id/d1/../../tmp/perf.ex.SHA1.B8I/d1abc1eb7568358cf23c959566f23462461834d1/elf
  OK for /tmp/perf.ex.SHA1.B8I
  Adding a50e350e97c43b4708d09bcd85ebfff7 /tmp/perf.ex.MD5.7Nv: Ok
  build id: a50e350e97c43b4708d09bcd85ebfff7
  link: /tmp/perf.debug.IuW/.build-id/a5/0e350e97c43b4708d09bcd85ebfff7
  file: /tmp/perf.debug.IuW/.build-id/a5/../../tmp/perf.ex.MD5.7Nv/a50e350e97c43b4708d09bcd85ebfff7/elf
  OK for /tmp/perf.ex.MD5.7Nv
  [ perf record: Woken up 1 times to write data ]
  [ perf record: Captured and wrote 0.034 MB /tmp/perf.data.xrH ]
  build id: d1abc1eb7568358cf23c959566f23462461834d1
  link: /tmp/perf.debug.eGR/.build-id/d1/abc1eb7568358cf23c959566f23462461834d1
  file: /tmp/perf.debug.eGR/.build-id/d1/../../tmp/perf.ex.SHA1.B8I/d1abc1eb7568358cf23c959566f23462461834d1/elf
  OK for /tmp/perf.ex.SHA1.B8I
  [ perf record: Woken up 2 times to write data ]
  [ perf record: Captured and wrote 0.034 MB /tmp/perf.data.cbE ]
  build id: a50e350e97c43b4708d09bcd85ebfff7
  link: /tmp/perf.debug.82t/.build-id/a5/0e350e97c43b4708d09bcd85ebfff7
  file: /tmp/perf.debug.82t/.build-id/a5/../../tmp/perf.ex.MD5.7Nv/a50e350e97c43b4708d09bcd85ebfff7/elf
  OK for /tmp/perf.ex.MD5.7Nv
  test child finished with 0
  ---- end ----
  build id cache operations: Ok
  #

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Acked-by: Ian Rogers <irogers@google.com>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Link: https://lore.kernel.org/r/20201013192441.1299447-10-jolsa@kernel.org


Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

parent e9ad9438

tools/perf/tests/shell/buildid.sh

0 → 100755

+101 −0

Original line number	Diff line number	Diff line
		#!/bin/sh
		# build id cache operations
		# SPDX-License-Identifier: GPL-2.0

		# skip if there's no readelf
		if ! [ -x "$(command -v readelf)" ]; then
		echo "failed: no readelf, install binutils"
		exit 2
		fi

		# skip if there's no compiler
		if ! [ -x "$(command -v cc)" ]; then
		echo "failed: no compiler, install gcc"
		exit 2
		fi

		ex_md5=$(mktemp /tmp/perf.ex.MD5.XXX)
		ex_sha1=$(mktemp /tmp/perf.ex.SHA1.XXX)

		echo 'int main(void) { return 0; }' \| cc -Wl,--build-id=sha1 -o ${ex_sha1} -x c -
		echo 'int main(void) { return 0; }' \| cc -Wl,--build-id=md5 -o ${ex_md5} -x c -

		echo "test binaries: ${ex_sha1} ${ex_md5}"

		check()
		{
		id=`readelf -n ${1} 2>/dev/null \| grep 'Build ID' \| awk '{print $3}'`

		echo "build id: ${id}"

		link=${build_id_dir}/.build-id/${id:0:2}/${id:2}
		echo "link: ${link}"

		if [ ! -h $link ]; then
		echo "failed: link ${link} does not exist"
		exit 1
		fi

		file=${build_id_dir}/.build-id/${id:0:2}/`readlink ${link}`/elf
		echo "file: ${file}"

		if [ ! -x $file ]; then
		echo "failed: file ${file} does not exist"
		exit 1
		fi

		diff ${file} ${1}
		if [ $? -ne 0 ]; then
		echo "failed: ${file} do not match"
		exit 1
		fi

		echo "OK for ${1}"
		}

		test_add()
		{
		build_id_dir=$(mktemp -d /tmp/perf.debug.XXX)
		perf="perf --buildid-dir ${build_id_dir}"

		${perf} buildid-cache -v -a ${1}
		if [ $? -ne 0 ]; then
		echo "failed: add ${1} to build id cache"
		exit 1
		fi

		check ${1}

		rm -rf ${build_id_dir}
		}

		test_record()
		{
		data=$(mktemp /tmp/perf.data.XXX)
		build_id_dir=$(mktemp -d /tmp/perf.debug.XXX)
		perf="perf --buildid-dir ${build_id_dir}"

		${perf} record --buildid-all -o ${data} ${1}
		if [ $? -ne 0 ]; then
		echo "failed: record ${1}"
		exit 1
		fi

		check ${1}

		rm -rf ${build_id_dir}
		rm -rf ${data}
		}

		# add binaries manual via perf buildid-cache -a
		test_add ${ex_sha1}
		test_add ${ex_md5}

		# add binaries via perf record post processing
		test_record ${ex_sha1}
		test_record ${ex_md5}

		# cleanup
		rm ${ex_sha1} ${ex_md5}

		exit ${err}

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