linux-toradex.git/tools/perf/python/rw-by-pid.py, branch master Linux kernel for Apalis and Colibri modules perf python: Port rw-by-pid from Perl to perf module 2026-09-26T18:49:29+00:00 Ian Rogers irogers@google.com 2026-09-26T06:19:55+00:00 d935308817b348443acad0a7dbb82689f0e48475 Replace the legacy Perl script rw-by-pid.pl with a standalone Python script in tools/perf/python/rw-by-pid.py using the perf Python module. Improvements compared to the legacy Perl script: - Remove the dependency on libperl and Perf::Trace::Util. - Convert unsigned 32-bit and 64-bit error return values (0xfffff000..0xffffffff and >= 0x8000000000000000) to negative errnos so failed read/write syscalls are recorded in the error table rather than inflating bytes_read / bytes_written. - Add argparse CLI support (-i/--input) and full type annotations. Add a shell test (test_rw_by_pid_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> 
Replace the legacy Perl script rw-by-pid.pl with a standalone Python
script in tools/perf/python/rw-by-pid.py using the perf Python module.

Improvements compared to the legacy Perl script:
- Remove the dependency on libperl and Perf::Trace::Util.
- Convert unsigned 32-bit and 64-bit error return values
  (0xfffff000..0xffffffff and >= 0x8000000000000000) to negative errnos
  so failed read/write syscalls are recorded in the error table rather
  than inflating bytes_read / bytes_written.
- Add argparse CLI support (-i/--input) and full type annotations.

Add a shell test
(test_rw_by_pid_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>