[PATCH v2 00/16] perf python: Fix python extension bugs from v19 review

[Ian Rogers <irogers@google.com>]

Phase 1 of splitting the v19 review patches into smaller fixes.
These patches address issues identified in the python extension during
the review of the v19 script porting series, as well as fixing several
pre-existing bugs and leaks.

v2:
- Addressed sashiko review feedback:
  - Fixed 64-bit casting for counts_values by using T_ULONGLONG and PyLong_FromUnsignedLongLong.
  - Replaced strict Py_TYPE checks with PyObject_TypeCheck for thread/cpu maps.
  - Fixed a missing CHECK_INITIALIZED for pyrf_thread__get_cpu, pyrf_pmu__name, pyrf_pmu__events.
  - Included <string.h> where memset was used.
- Fixed line splitting formatting on PyObject_New in pyrf_evsel__read.
- Added fixes for memory leaks and issues discovered during review:
  - Fix memory leak of key and value in pyrf__metrics_cb
  - Fix count_values memory leak in pyrf_evsel__read
  - Fix sb_evlist leaks in both top and record paths.
  - Fix potential divide by zero in perf_event__synthesize_threads

v1:
- Decomposed the single large "Fix python extension bugs" patch into 13 individual fixes.
- Added Fixes: tags for issues that date back to earlier commits.
- Addressed checkpatch warnings (line lengths, Signed-off-by, etc).


Ian Rogers (16):
  perf script: Fix metric_evlist leak in script_find_metrics
  perf stat: Fix evsel_list leak in cmd_stat
  perf tools: Fix sb_evlist leaks in top and record
  perf python: Fix memory leak in pyrf_evlist__get_pollfd
  perf synthetic-events: Fix uninitialized pthread_join
  perf data: Fix directory file descriptor leak in perf_data__switch
  perf test: Fix skiplist leak in cmd_test
  perf python: Check counts_values size in set_values
  perf python: Validate CPU and thread maps in pyrf_evsel__open
  perf python: Validate attribute setters in pyrf_evsel
  perf python: Zero initialize perf_data in pyrf_data__init
  perf python: Add thread and PMU uninitialized checks
  perf python: Fix MetricGroup return type in perf.pyi
  perf python: Fix count_values memory leak in pyrf_evsel__read
  perf python: Fix memory leak in pyrf__metrics_cb
  perf synthetic-events: Fix divide by zero in
    perf_event__synthesize_threads

 tools/perf/builtin-record.c        |   2 +
 tools/perf/builtin-script.c        |   2 +-
 tools/perf/builtin-stat.c          |   9 +-
 tools/perf/builtin-top.c           |   2 +
 tools/perf/python/perf.pyi         |   4 +-
 tools/perf/tests/builtin-test.c    |   5 +-
 tools/perf/util/data.c             |   3 +-
 tools/perf/util/python.c           | 160 ++++++++++++++++++++++++-----
 tools/perf/util/synthetic-events.c |   6 +-
 9 files changed, 153 insertions(+), 40 deletions(-)

-- 
2.55.0.rc0.799.gd6f94ed593-goog