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SubjectRe: [PATCHv2 1/9] perf tools: Add build id shell test
Hi Jiri,

On Fri, Oct 2, 2020 at 4:05 AM Jiri Olsa <jolsa@redhat.com> wrote:
>
> Adding test for build id cache that adds 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.
>
> Signed-off-by: Jiri Olsa <jolsa@kernel.org>
> ---
> v2 changes:
> - detect perf build directory when checking for build-ex* binaries
>
> tools/perf/Makefile.perf | 14 +++++
> tools/perf/tests/shell/buildid.sh | 101 ++++++++++++++++++++++++++++++
> 2 files changed, 115 insertions(+)
> create mode 100755 tools/perf/tests/shell/buildid.sh
>
> diff --git a/tools/perf/Makefile.perf b/tools/perf/Makefile.perf
> index 920d8afb9238..b2aeefa64e92 100644
> --- a/tools/perf/Makefile.perf
> +++ b/tools/perf/Makefile.perf
> @@ -126,6 +126,8 @@ include ../scripts/utilities.mak
> #
> # Define NO_LIBDEBUGINFOD if you do not want support debuginfod
> #
> +# Define NO_BUILDID_EX if you do not want buildid-ex-* binaries
> +#
>
> # As per kernel Makefile, avoid funny character set dependencies
> unexport LC_ALL
> @@ -349,6 +351,11 @@ ifndef NO_PERF_READ_VDSOX32
> PROGRAMS += $(OUTPUT)perf-read-vdsox32
> endif
>
> +ifndef NO_BUILDID_EX
> +PROGRAMS += $(OUTPUT)buildid-ex-sha1
> +PROGRAMS += $(OUTPUT)buildid-ex-md5
> +endif
> +
> LIBJVMTI = libperf-jvmti.so
>
> ifndef NO_JVMTI
> @@ -756,6 +763,13 @@ $(OUTPUT)perf-read-vdsox32: perf-read-vdso.c util/find-map.c
> $(QUIET_CC)$(CC) -mx32 $(filter -static,$(LDFLAGS)) -Wall -Werror -o $@ perf-read-vdso.c
> endif
>
> +ifndef NO_BUILDID_EX
> +$(OUTPUT)buildid-ex-sha1:
> + $(QUIET_LINK)echo 'int main(void) { return 0; }' | $(CC) -Wl,--build-id=sha1 -o $@ -x c -
> +$(OUTPUT)buildid-ex-md5:
> + $(QUIET_LINK)echo 'int main(void) { return 0; }' | $(CC) -Wl,--build-id=md5 -o $@ -x c -
> +endif

Can we just build them in the test shell script instead?

Thanks
Namhyung


> +
> ifndef NO_JVMTI
> LIBJVMTI_IN := $(OUTPUT)jvmti/jvmti-in.o
>
> diff --git a/tools/perf/tests/shell/buildid.sh b/tools/perf/tests/shell/buildid.sh
> new file mode 100755
> index 000000000000..dd9f9c306c34
> --- /dev/null
> +++ b/tools/perf/tests/shell/buildid.sh
> @@ -0,0 +1,101 @@
> +#!/bin/sh
> +# build id cache operations
> +# SPDX-License-Identifier: GPL-2.0
> +
> +ex_md5=buildid-ex-md5
> +ex_sha1=buildid-ex-sha1
> +
> +# skip if there are no test binaries
> +if [ ! -x buildid-ex-sha1 -a ! -x buildid-ex-md5 ]; then
> + ex_dir=$(dirname `which perf`)
> + ex_md5=${ex_dir}/buildid-ex-md5
> + ex_sha1=${ex_dir}/buildid-ex-sha1
> +
> + if [ ! -x ${ex_sha1} -a ! -x ${ex_md5} ]; then
> + echo "failed: no test binaries"
> + exit 2
> + fi
> +fi
> +
> +echo "test binaries: ${ex_sha1} ${ex_md5}"
> +
> +# skip if there's no readelf
> +if [ ! -x `which readelf` ]; then
> + echo "failed: no readelf, install binutils"
> + exit 2
> +fi
> +
> +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}
> +
> +exit ${err}
> --
> 2.26.2
>

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