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author | Namhyung Kim <namhyung@kernel.org> | 2022-05-18 15:47:25 -0700 |
---|---|---|
committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2022-05-26 12:36:58 -0300 |
commit | 831d06c8d1b37b722d110579d52b1c661e618302 (patch) | |
tree | 1ea9763cf111ce176be4bb0d180e71da57669148 /tools/perf | |
parent | 685439a7a037d8677e3d1acf0302624002ee6a6d (diff) | |
download | linux-831d06c8d1b37b722d110579d52b1c661e618302.tar.bz2 |
perf test: Add a basic offcpu profiling test
$ 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@kernel.org>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Acked-by: Ian Rogers <irogers@google.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Blake Jones <blakejones@google.com>
Cc: Hao Luo <haoluo@google.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Milian Wolff <milian.wolff@kdab.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Song Liu <songliubraving@fb.com>
Cc: bpf@vger.kernel.org
Link: https://lore.kernel.org/r/20220518224725.742882-7-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf')
-rwxr-xr-x | tools/perf/tests/shell/record_offcpu.sh | 60 |
1 files changed, 60 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 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 |