1 files changed, 90 insertions, 0 deletions
diff --git a/tools/perf/tests/shell/stat+csv_output.sh b/tools/perf/tests/shell/stat+csv_output.sh
new file mode 100755
index 000000000000..fc2d8cc6e5e0
--- /dev/null
+++ b/tools/perf/tests/shell/stat+csv_output.sh
@@ -0,0 +1,90 @@
+#!/bin/bash
+# perf stat CSV output linter
+# SPDX-License-Identifier: (LGPL-2.1 OR BSD-2-Clause)
+# Tests various perf stat CSV output commands for the
+# correct number of fields and the CSV separator set to ','.
+
+set -e
+
+# shellcheck source=lib/stat_output.sh
+. "$(dirname $0)"/lib/stat_output.sh
+
+csv_sep=@
+
+stat_output=$(mktemp /tmp/__perf_test.stat_output.csv.XXXXX)
+
+cleanup() {
+  rm -f "${stat_output}"
+
+  trap - EXIT TERM INT
+}
+
+trap_cleanup() {
+  cleanup
+  exit 1
+}
+trap trap_cleanup EXIT TERM INT
+
+function commachecker()
+{
+	local -i cnt=0
+	local exp=0
+
+	case "$1"
+	in "--no-args")		exp=6
+	;; "--system-wide")	exp=6
+	;; "--event")		exp=6
+	;; "--interval")	exp=7
+	;; "--per-thread")	exp=7
+	;; "--system-wide-no-aggr")	exp=7
+				[ "$(uname -m)" = "s390x" ] && exp='^[6-7]$'
+	;; "--per-core")	exp=8
+	;; "--per-socket")	exp=8
+	;; "--per-node")	exp=8
+	;; "--per-die")		exp=8
+	;; "--per-cluster")	exp=8
+	;; "--per-cache")	exp=8
+	esac
+
+	while read line
+	do
+		# Ignore initial "started on" comment.
+		x=${line:0:1}
+		[ "$x" = "#" ] && continue
+		# Ignore initial blank line.
+		[ "$line" = "" ] && continue
+
+		# Count the number of commas
+		x=$(echo $line | tr -d -c $csv_sep)
+		cnt="${#x}"
+		# echo $line $cnt
+		[[ ! "$cnt" =~ $exp ]] && {
+			echo "wrong number of fields. expected $exp in $line" 1>&2
+			exit 1;
+		}
+	done < "${stat_output}"
+	return 0
+}
+
+perf_cmd="-x$csv_sep -o ${stat_output}"
+
+skip_test=$(check_for_topology)
+check_no_args "CSV" "$perf_cmd"
+check_system_wide "CSV" "$perf_cmd"
+check_interval "CSV" "$perf_cmd"
+check_event "CSV" "$perf_cmd"
+check_per_thread "CSV" "$perf_cmd"
+check_per_node "CSV" "$perf_cmd"
+if [ $skip_test -ne 1 ]
+then
+	check_system_wide_no_aggr "CSV" "$perf_cmd"
+	check_per_core "CSV" "$perf_cmd"
+	check_per_cache_instance "CSV" "$perf_cmd"
+	check_per_cluster "CSV" "$perf_cmd"
+	check_per_die "CSV" "$perf_cmd"
+	check_per_socket "CSV" "$perf_cmd"
+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
+cleanup
+exit 0