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Port compaction-times.py to a standalone script in tools/perf/python/
using the perf module directly to analyze mm_compaction tracepoints.
Improvements compared to the legacy script:
- Replace Python 2 constructs (such as sys.maxint and raw integer
bitmasks) with Python 3 enum.IntEnum (Popt) and enum.IntFlag (Topt)
types.
- Access tracepoint fields directly on perf.sample_event and add
-i/--input CLI option support via argparse.
- Add full type annotations passing mypy and pylint without suppression
comments.
Add a shell test (test_compaction_times_python.sh) to verify the
standalone script.
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>
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