Messages in this thread Patch in this message | | | From | Yang Jihong <> | Subject | [PATCH v5 6/7] perf test: Add test case for record sideband events | Date | Fri, 4 Aug 2023 02:07:40 +0000 |
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Add a new test case to record sideband events for all CPUs when tracing selected CPUs
Test result:
# ./perf test list 2>&1 | grep 'perf record sideband tests' 95: perf record sideband tests # ./perf test 95 95: perf record sideband tests : Ok
Signed-off-by: Yang Jihong <yangjihong1@huawei.com> --- tools/perf/tests/shell/record_sideband.sh | 44 +++++++++++++++++++++++ 1 file changed, 44 insertions(+) create mode 100755 tools/perf/tests/shell/record_sideband.sh
diff --git a/tools/perf/tests/shell/record_sideband.sh b/tools/perf/tests/shell/record_sideband.sh new file mode 100755 index 000000000000..2ecf00011cb1 --- /dev/null +++ b/tools/perf/tests/shell/record_sideband.sh @@ -0,0 +1,44 @@ +#!/bin/sh +# perf record sideband tests +# SPDX-License-Identifier: GPL-2.0 + +set -e + +err=0 +perfdata=$(mktemp /tmp/__perf_test.perf.data.XXXXX) + +can_cpu_wide() +{ + if ! perf record -o ${perfdata} -BN --no-bpf-event -C $1 true 2>&1 >/dev/null + then + echo "record sideband test [Skipped cannot record cpu$1]" + err=2 + fi + + rm -f ${perfdata} + return $err +} + +test_system_wide_tracking() +{ + # Need CPU 0 and CPU 1 + can_cpu_wide 0 || return 0 + can_cpu_wide 1 || return 0 + + # Record on CPU 0 a task running on CPU 1 + perf record -BN --no-bpf-event -o ${perfdata} -C 0 -- taskset --cpu-list 1 true + + # Should get MMAP events from CPU 1 + mmap_cnt=`perf script -i ${perfdata} --show-mmap-events -C 1 2>/dev/null | grep MMAP | wc -l` + + rm -f ${perfdata} + + if [ ${mmap_cnt} -gt 0 ] ; then + return 0 + fi + + echo "Failed to record MMAP events on CPU 1 when tracing CPU 0" + return 1 +} + +test_system_wide_tracking -- 2.30.GIT
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