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perf test: Add build id shell test

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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>
This commit is contained in:
Jiri Olsa 2020-10-13 21:24:41 +02:00 committed by Arnaldo Carvalho de Melo
parent e9ad94381c
commit 78b2c50c5d
1 changed files with 101 additions and 0 deletions
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101
tools/perf/tests/shell/buildid.sh Executable file
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@ -0,0 +1,101 @@
#!/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}