[PATCH v4 08/14] perf stat: Extend CSV output linter to test core aggregation checks

[Ian Rogers <irogers@google.com>]

This patch extends tools/perf/tests/shell/stat+csv_output.sh to run all
basic and core aggregation linter checks a second time under the --new
CSV print flag:

  - check_no_args
  - check_system_wide
  - check_interval
  - check_event
  - check_per_thread
  - check_per_node
  - check_system_wide_no_aggr
  - check_per_core
  - check_per_socket
  - check_per_die

This guarantees that CSV outputs produced by the decoupled printing
engine are formally verified and column-valid across standard and
interval modes.

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+csv_output.sh | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/tools/perf/tests/shell/stat+csv_output.sh b/tools/perf/tests/shell/stat+csv_output.sh
index cd6fff597091..e4153a03d716 100755
--- a/tools/perf/tests/shell/stat+csv_output.sh
+++ b/tools/perf/tests/shell/stat+csv_output.sh
@@ -88,5 +88,21 @@ then
 else
 	echo "[Skip] Skipping tests for system_wide_no_aggr, per_core, per_die and per_socket since socket id exposed via topology is invalid"
 fi
+# New API CSV checks
+perf_cmd="--new -x$csv_sep -o ${stat_output}"
+check_no_args "CSV (New API)" "$perf_cmd"
+check_system_wide "CSV (New API)" "$perf_cmd"
+check_interval "CSV (New API)" "$perf_cmd"
+check_event "CSV (New API)" "$perf_cmd"
+check_per_thread "CSV (New API)" "$perf_cmd"
+check_per_node "CSV (New API)" "$perf_cmd"
+if [ $skip_test -ne 1 ]
+then
+	check_system_wide_no_aggr "CSV (New API)" "$perf_cmd"
+	check_per_core "CSV (New API)" "$perf_cmd"
+	check_per_die "CSV (New API)" "$perf_cmd"
+	check_per_socket "CSV (New API)" "$perf_cmd"
+fi
+
 cleanup
 exit 0
-- 
2.55.0.141.g00534a21ce-goog