[PATCH v4 14/14] perf stat: Extend PMU metrics value linter to validate --new outputs

[Ian Rogers <irogers@google.com>]

This patch updates tools/perf/tests/shell/stat_metrics_values.sh to run
the metrics value validation linter twice: once for the legacy path, and
once under the --new print flag using the newly introduced python
validator `-new` argument:

  $PYTHON $pythonvalidator -rule $rulefile -output_dir $tmpdir ... -new

This mathematically guarantees that calculated Intel PMU metric values
staged inside the decoupled streaming JSON callbacks are parsed and
validated cleanly against the formal rules engine.

Signed-off-by: Ian Rogers <irogers@google.com>
Assisted-by: Antigravity:gemini-3.5-flash
Acked-by: Chun-Tse Shao <ctshao@google.com>
---
 tools/perf/tests/shell/stat_metrics_values.sh | 22 ++++++++++++++++---
 1 file changed, 19 insertions(+), 3 deletions(-)

diff --git a/tools/perf/tests/shell/stat_metrics_values.sh b/tools/perf/tests/shell/stat_metrics_values.sh
index 86c5c7f70933..3f545e88b69f 100755
--- a/tools/perf/tests/shell/stat_metrics_values.sh
+++ b/tools/perf/tests/shell/stat_metrics_values.sh
@@ -26,13 +26,29 @@ echo "Output will be stored in: $tmpdir"
 for cputype in /sys/bus/event_source/devices/cpu_*; do
 	cputype=$(basename "$cputype")
 	echo "Testing metrics for: $cputype"
-	$PYTHON $pythonvalidator -rule $rulefile -output_dir $tmpdir -wl "${workload}" \
+	mkdir -p "$tmpdir/legacy"
+	$PYTHON $pythonvalidator -rule $rulefile -output_dir "$tmpdir/legacy" -wl "${workload}" \
 		-cputype "${cputype}"
 	ret=$?
-	rm -rf $tmpdir
 	if [ $ret -ne 0 ]; then
-		echo "Metric validation return with errors. Please check metrics reported with errors."
+		echo "Metric validation return with errors. " \
+			"Please check metrics reported with errors in: " \
+			"$tmpdir/legacy"
+		exit $ret
+	fi
+
+	echo "Testing metrics for: $cputype (New API)"
+	mkdir -p "$tmpdir/new"
+	$PYTHON $pythonvalidator -rule $rulefile -output_dir "$tmpdir/new" -wl "${workload}" \
+		-cputype "${cputype}" -new
+	ret=$?
+	if [ $ret -ne 0 ]; then
+		echo "Metric validation return with errors (New API). " \
+			"Please check metrics reported with errors in: " \
+			"$tmpdir/new"
+		exit $ret
 	fi
 done
+rm -rf "$tmpdir"
 exit $ret
 
-- 
2.55.0.141.g00534a21ce-goog