On Wed, May 18, 2022 at 3:47 PM Namhyung Kim <namhyung@xxxxxxxxxx> wrote:
>
> $ sudo ./perf test -v offcpu
> 88: perf record offcpu profiling tests :
> --- start ---
> test child forked, pid 685966
> Basic off-cpu test
> Basic off-cpu test [Success]
> test child finished with 0
> ---- end ----
> perf record offcpu profiling tests: Ok
>
> Signed-off-by: Namhyung Kim <namhyung@xxxxxxxxxx>
Acked-by: Ian Rogers <irogers@xxxxxxxxxx>
Thanks,
Ian
> ---
> tools/perf/tests/shell/record_offcpu.sh | 60 +++++++++++++++++++++++++
> 1 file changed, 60 insertions(+)
> create mode 100755 tools/perf/tests/shell/record_offcpu.sh
>
> diff --git a/tools/perf/tests/shell/record_offcpu.sh b/tools/perf/tests/shell/record_offcpu.sh
> new file mode 100755
> index 000000000000..96e0739f7478
> --- /dev/null
> +++ b/tools/perf/tests/shell/record_offcpu.sh
> @@ -0,0 +1,60 @@
> +#!/bin/sh
> +# perf record offcpu profiling tests
> +# SPDX-License-Identifier: GPL-2.0
> +
> +set -e
> +
> +err=0
> +perfdata=$(mktemp /tmp/__perf_test.perf.data.XXXXX)
> +
> +cleanup() {
> + rm -f ${perfdata}
> + rm -f ${perfdata}.old
> + trap - exit term int
> +}
> +
> +trap_cleanup() {
> + cleanup
> + exit 1
> +}
> +trap trap_cleanup exit term int
> +
> +test_offcpu() {
> + echo "Basic off-cpu test"
> + if [ `id -u` != 0 ]
> + then
> + echo "Basic off-cpu test [Skipped permission]"
> + err=2
> + return
> + fi
> + if perf record --off-cpu -o ${perfdata} --quiet true 2>&1 | grep BUILD_BPF_SKEL
> + then
> + echo "Basic off-cpu test [Skipped missing BPF support]"
> + err=2
> + return
> + fi
> + if ! perf record --off-cpu -e dummy -o ${perfdata} sleep 1 2> /dev/null
> + then
> + echo "Basic off-cpu test [Failed record]"
> + err=1
> + return
> + fi
> + if ! perf evlist -i ${perfdata} | grep -q "offcpu-time"
> + then
> + echo "Basic off-cpu test [Failed record]"
> + err=1
> + return
> + fi
> + if ! perf report -i ${perfdata} -q --percent-limit=90 | egrep -q sleep
> + then
> + echo "Basic off-cpu test [Failed missing output]"
> + err=1
> + return
> + fi
> + echo "Basic off-cpu test [Success]"
> +}
> +
> +test_offcpu
> +
> +cleanup
> +exit $err
> --
> 2.36.1.124.g0e6072fb45-goog
>
