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Age	Commit message (Collapse)	Author
4 days	perf test: Deflake failed-syscalls Python shell tests under load	Ian Rogers
	When running 'perf test' in parallel under heavy system load, a one-shot 'perf record -e ... -- ls /does_not_exist' without '-B -N --no-bpf-event' can exit in under 300 microseconds before 'ls's PERF_RECORD_COMM and ENOENT sys_exit events are captured, while also contending on ~/.debug build-id caching and BPF event synthesis. Pass '-B -N --no-bpf-event' to 'perf record', sleep 0.05s in a subshell after 'ls' so its events are flushed before the parent subshell exits, and wrap the record and check steps in a bounded retry loop (up to 5 attempts). Fixes: b76c43d09b06da1b ("perf python: Port failed-syscalls-by-pid to perf module") Fixes: 4e3fe6987cbad8ab ("perf python: Port failed-syscalls from Perl to perf module") 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>
7 days	perf script: Support standalone scripts and remove embedded scripting	Ian Rogers
	Refactor 'perf script' to launch standalone scripts directly via fork() and execvp() and remove the legacy embedded Perl and Python scripting engines: - Remove the embedded Perl scripting engine (util/scripting-engines/trace-event-perl.c), Perl scripts, bin wrappers, and Trace-Util library (scripts/perl/Perf-Trace-Util/), and script_perl.sh test. - Remove libperl feature checks from Makefile.config, Makefile.perf, builtin-check.c, and Documentation/perf-check.txt. - Remove -g / --gen-script option and scripting_ops dispatch table from builtin-script.c and trace-event-scripting.c. - Hide the legacy -s / --script option and update script discovery in find_script() and list_available_scripts() to prioritize the system 'python' directory over bare filenames in the current directory. - Update the Python script shell tests (test_arm_coresight_disasm.sh, test_task_analyzer.sh, and test_*_python.sh) to invoke scripts via 'perf script <script>' rather than running the Python interpreter directly on the script file path. 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>
7 days	perf python: Port failed-syscalls from Perl to perf module	Ian Rogers
	Replace the legacy Perl script failed-syscalls.pl with a standalone Python script in tools/perf/python/failed-syscalls.py using the perf Python module. Improvements compared to the legacy Perl script: - Remove the dependency on libperl and Perf::Trace::Util. - Support both syscalls:sys_exit_* and raw_syscalls:sys_exit events (the legacy script only handled raw_syscalls::sys_exit). - Use session.is_64_bit to distinguish 32-bit vs 64-bit unsigned error return ranges (0xfffff000..0xffffffff vs >= 0xfffffffffffff000) so valid 64-bit syscalls returning ~4GB values are not misclassified as 32-bit negative errors. - Add argparse CLI support (-i/--input and optional comm filter) and full type annotations. Add a shell test (test_failed_syscalls_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>