Ian Rogers b103b3338b perf python: Port futex-contention to perf module ... Port tools/perf/scripts/python/futex-contention.py to a standalone script in tools/perf/python/ using the perf module. Avoiding the embedded interpreter overhead improves execution speed by ~3.2x: ``` $ perf record -e syscalls:sys_*_futex -a sleep 1 ... $ time perf script tools/perf/scripts/python/futex-contention.py ... real 0m1.007s user 0m0.935s sys 0m0.072s $ time python3 tools/perf/python/futex-contention.py ... real 0m0.314s user 0m0.259s sys 0m0.056s ``` Additional improvements compared to the legacy script: - Consolidate per-(tid, uaddr) contention count, total_time, min_time, and max_time into a single LockStats class instead of maintaining three separate dictionaries. - Validate that uaddr and op tracepoint attributes are present on syscalls:sys_enter_futex samples rather than silently attributing missing fields to uaddr=0, op=0 (FUTEX_WAIT). - Add -i/--input CLI option support via argparse and full type annotations. Add a shell test (test_futex_contention_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>		2026-09-26 20:49:29 +02:00
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counting.py	perf python: Improve perf script -l descriptions	2026-09-26 20:49:27 +02:00
event_analyzing_sample.py	perf python: Port event_analyzing_sample to perf module	2026-09-26 20:49:29 +02:00
failed-syscalls-by-pid.py	perf python: Port failed-syscalls-by-pid to perf module	2026-09-26 20:49:29 +02:00
failed-syscalls.py	perf python: Port failed-syscalls from Perl to perf module	2026-09-26 20:49:29 +02:00
flamegraph.py	perf python: Port flamegraph to perf module	2026-09-26 20:49:28 +02:00
futex-contention.py	perf python: Port futex-contention to perf module	2026-09-26 20:49:29 +02:00
gecko.py	perf python: Port gecko to perf module	2026-09-26 20:49:28 +02:00
ilist.py	perf python: Clean up pylint warnings in ilist.py	2026-09-26 20:49:27 +02:00
mem-phys-addr.py	perf python: Port mem-phys-addr to perf module	2026-09-26 20:49:28 +02:00
perf_live.py	perf python: Allow KeyboardInterrupt to propagate in LiveSession	2026-09-26 20:49:27 +02:00
perf.pyi	perf python: Add Intel PT call_return and itrace capability	2026-09-26 20:49:27 +02:00
rw-by-file.py	perf python: Port rw-by-file from Perl to perf module	2026-09-26 20:49:29 +02:00
rw-by-pid.py	perf python: Port rw-by-pid from Perl to perf module	2026-09-26 20:49:29 +02:00
rwtop.py	perf python: Port rwtop from Perl to perf module	2026-09-26 20:49:29 +02:00
sctop.py	perf python: Port sctop to perf module	2026-09-26 20:49:29 +02:00
stackcollapse.py	perf python: Port stackcollapse to perf module	2026-09-26 20:49:28 +02:00
stat-cpi.py	perf python: Port stat-cpi to perf module	2026-09-26 20:49:28 +02:00
syscall-counts-by-pid.py	perf python: Port syscall-counts-by-pid to perf module	2026-09-26 20:49:29 +02:00
syscall-counts.py	perf python: Port syscall-counts to perf module	2026-09-26 20:49:29 +02:00
tracepoint.py	perf python: Improve perf script -l descriptions	2026-09-26 20:49:27 +02:00
treport.py	perf python: Clean up pylint warnings in treport.py	2026-09-26 20:49:27 +02:00
twatch.py	perf python: Improve perf script -l descriptions	2026-09-26 20:49:27 +02:00