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perf test: Update test for --for-each-cgroup option

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To simply check the number of output lines with and without the option.

Before this series, it failed like below:

  $ perf test -v 125
  125: perf stat --bpf-counters --for-each-cgroup test:
  ---- start ----
  test child forked, pid 1941516
  Normal output has 22 lines, but it now has 54
  ---- end(-1) ----
  125: perf stat --bpf-counters --for-each-cgroup test         : FAILED!

Signed-off-by: Namhyung Kim <namhyung@kernel.org>
This commit is contained in:
Namhyung Kim 2026-07-10 17:04:19 -07:00
parent cf37bb44cd
commit c341749d6a
1 changed files with 15 additions and 0 deletions
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15
tools/perf/tests/shell/stat_bpf_counters_cgrp.sh
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@ -58,9 +58,24 @@ check_system_wide_counted()
fi
}
# Missing flags in evlist__clone() resulted in different output.
# Just check the number of output lines for simple verification.
check_evlist_expand()
{
normal_output=$(perf stat -a -x, true 2>&1 | wc -l)
expand_output=$(perf stat -a -x, --bpf-counters --for-each-cgroup / true 2>&1 | wc -l)
if [ "${normal_output}" != "${expand_output}" ]; then
if [ "${verbose}" = "1" ]; then
echo "Normal output has ${normal_output} lines, but it now has ${expand_output}"
fi
exit 1
fi
}
check_bpf_counter
find_cgroups
check_system_wide_counted
check_evlist_expand
exit 0