perf script: Support standalone scripts and remove embedded scripting

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>

1 files changed, 2 insertions, 2 deletions

diff --git a/tools/perf/tests/shell/test_syscall_counts_python.sh b/tools/perf/tests/shell/test_syscall_counts_python.sh
index 0c4b75499209..310e05d399f9 100755
--- a/tools/perf/tests/shell/test_syscall_counts_python.sh
+++ b/tools/perf/tests/shell/test_syscall_counts_python.sh
@@ -54,7 +54,7 @@ test_file_mode() {
 		exit 2
 	fi
 
-	if ! "$PYTHON" "$script_path" -i "${temp_data}" > "${temp_out}"; then
+	if ! perf script syscall-counts -i "${temp_data}" > "${temp_out}"; then
 		echo "File mode test failed."
 		err=1
 	elif ! grep -E -q "^[a-zA-Z0-9_]+ +[0-9]+$" "${temp_out}"; then
@@ -65,7 +65,7 @@ test_file_mode() {
 	fi
 
 	# Test with a comm argument
-	if ! "$PYTHON" "$script_path" -i "${temp_data}" "sleep" > "${temp_out}"; then
+	if ! perf script syscall-counts -i "${temp_data}" "sleep" > "${temp_out}"; then
 		echo "Comm filter test failed."
 		err=1
 	elif ! grep -E -q "^[a-zA-Z0-9_]+ +[0-9]+$" "${temp_out}"; then