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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:49:45 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:49:45 +0000 |
commit | 2c3c1048746a4622d8c89a29670120dc8fab93c4 (patch) | |
tree | 848558de17fb3008cdf4d861b01ac7781903ce39 /tools/perf/tests/shell/record_offcpu.sh | |
parent | Initial commit. (diff) | |
download | linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.tar.xz linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.zip |
Adding upstream version 6.1.76.upstream/6.1.76upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'tools/perf/tests/shell/record_offcpu.sh')
-rwxr-xr-x | tools/perf/tests/shell/record_offcpu.sh | 103 |
1 files changed, 103 insertions, 0 deletions
diff --git a/tools/perf/tests/shell/record_offcpu.sh b/tools/perf/tests/shell/record_offcpu.sh new file mode 100755 index 000000000..054272750 --- /dev/null +++ b/tools/perf/tests/shell/record_offcpu.sh @@ -0,0 +1,103 @@ +#!/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_priv() { + echo "Checking off-cpu privilege" + + if [ `id -u` != 0 ] + then + echo "off-cpu test [Skipped permission]" + err=2 + return + fi + if perf record --off-cpu -o /dev/null --quiet true 2>&1 | grep BUILD_BPF_SKEL + then + echo "off-cpu test [Skipped missing BPF support]" + err=2 + return + fi +} + +test_offcpu_basic() { + echo "Basic off-cpu test" + + 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 no event]" + 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_child() { + echo "Child task off-cpu test" + + # perf bench sched messaging creates 400 processes + if ! perf record --off-cpu -e dummy -o ${perfdata} -- \ + perf bench sched messaging -g 10 > /dev/null 2>&1 + then + echo "Child task off-cpu test [Failed record]" + err=1 + return + fi + if ! perf evlist -i ${perfdata} | grep -q "offcpu-time" + then + echo "Child task off-cpu test [Failed no event]" + err=1 + return + fi + # each process waits for read and write, so it should be more than 800 events + if ! perf report -i ${perfdata} -s comm -q -n -t ';' --percent-limit=90 | \ + awk -F ";" '{ if (NF > 3 && int($3) < 800) exit 1; }' + then + echo "Child task off-cpu test [Failed invalid output]" + err=1 + return + fi + echo "Child task off-cpu test [Success]" +} + + +test_offcpu_priv + +if [ $err = 0 ]; then + test_offcpu_basic +fi + +if [ $err = 0 ]; then + test_offcpu_child +fi + +cleanup +exit $err |