diff options
| author | Ian Rogers <irogers@google.com> | 2026-09-28 11:26:02 -0700 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2026-10-01 17:49:27 +0200 |
| commit | e4ed3ba7e2d5a548220511b8e64d2902318348e7 (patch) | |
| tree | f1fde79f2ebf063f72364fc7289e29209ca226b9 /tools/perf/tests/shell | |
| parent | 5df51199975e605ec4f0cca86fbd1c6ebf59c58c (diff) | |
perf test trace_summary: Improve error diagnostics
On a mismatch print the command, the match count, the matching lines and
the end of the output.
Reviewed-by: Namhyung Kim <namhyung@kernel.org>
Assisted-by: Antigravity:gemini-3.1-pro
Signed-off-by: Ian Rogers <irogers@google.com>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/tests/shell')
| -rwxr-xr-x | tools/perf/tests/shell/trace_summary.sh | 13 |
1 files changed, 9 insertions, 4 deletions
diff --git a/tools/perf/tests/shell/trace_summary.sh b/tools/perf/tests/shell/trace_summary.sh index d5da1d7d8d88..273199a29a20 100755 --- a/tools/perf/tests/shell/trace_summary.sh +++ b/tools/perf/tests/shell/trace_summary.sh @@ -27,10 +27,15 @@ test_perf_trace() { count=$(grep -E -c -m 3 "${search}" ${OUTPUT}) if [ "${count}" != "3" ]; then - echo "Error: cannot find enough pattern ${search} in the output" - cat ${OUTPUT} - rm -f ${OUTPUT} - exit 1 + echo "Error: cannot find enough pattern ${search} (count=${count}) in output of:" + echo "Error: perf trace ${args} -- ${workload}" + echo "Error: matched lines:" + grep -E "${search}" ${OUTPUT} || echo "none" + echo "Error: last 20 lines of output:" + # The summary comes last, after any -S trace output. + tail -n 20 ${OUTPUT} + rm -f ${OUTPUT} + exit 1 fi } |