Messages in this thread | | | Date | Thu, 7 Jul 2022 13:12:11 -0700 | Subject | [PATCH v6 0/2] JSON output for perf stat | From | Ian Rogers <> |
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Parsing the CSV or text output of perf stat can be problematic when new output is added (columns in CSV format). JSON names values and simplifies the job of parsing. Add a JSON output option to perf-stat then add unit test that parses and validates the output.
This is a resend of two v2 patches: https://lore.kernel.org/lkml/20210813220754.2104922-1-cjense@google.com/ https://lore.kernel.org/lkml/20210813220936.2105426-1-cjense@google.com/ with a few formatting changes and improvements to the linter.
v6. Is a rebase.
v5. Drops the merged CSV check, fixes a json test issue found by Arnaldo and a typo.
v4. Does some minor fixes to the json linter.
v3. There is some tidy up of CSV code including a potential memory over run in the os.nfields set up caught by sanitizers. To facilitate this an AGGR_MAX value is added. v3 also adds the CSV testing.
v2. Fixes the system wide no aggregation test to not run if the paranoia is wrong. It also makes the counter-value check handle the "<not counted>" and "<not supported>" cases.
Claire Jensen (2): perf stat: Add JSON output option perf test: Json format checking
tools/perf/Documentation/perf-stat.txt | 21 + tools/perf/builtin-stat.c | 6 + .../tests/shell/lib/perf_json_output_lint.py | 95 +++++ tools/perf/tests/shell/stat+json_output.sh | 147 +++++++ tools/perf/util/stat-display.c | 384 +++++++++++++----- tools/perf/util/stat.c | 1 + tools/perf/util/stat.h | 2 + 7 files changed, 550 insertions(+), 106 deletions(-) create mode 100644 tools/perf/tests/shell/lib/perf_json_output_lint.py create mode 100755 tools/perf/tests/shell/stat+json_output.sh
-- 2.37.0.rc0.161.g10f37bed90-goog
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