pert tests: Add tests for new "perf stat --per-cache" aggregation option

Add tests for the new "--per-cache" option in 'perf stat' for CSV and
JSON generation as well as for the JSON linting.

Suggested-by: Gautham Shenoy <[email protected]>
Signed-off-by: K Prateek Nayak <[email protected]>
Acked-by: Ian Rogers <[email protected]>
Cc: Alexander Shishkin <[email protected]>
Cc: Ananth Narayan <[email protected]>
Cc: Ingo Molnar <[email protected]>
Cc: Jiri Olsa <[email protected]>
Cc: Mark Rutland <[email protected]>
Cc: Namhyung Kim <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Ravi Bangoria <[email protected]>
Cc: Sandipan Das <[email protected]>
Cc: Stephane Eranian <[email protected]>
Cc: Wen Pu <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>

tools/perf/tests/shell/lib/perf_json_output_lint.py

@@ -14,6 +14,7 @@ ap.add_argument('--system-wide', action='store_true')
 ap.add_argument('--event', action='store_true')
 ap.add_argument('--per-core', action='store_true')
 ap.add_argument('--per-thread', action='store_true')
+ap.add_argument('--per-cache', action='store_true')
 ap.add_argument('--per-die', action='store_true')
 ap.add_argument('--per-node', action='store_true')
 ap.add_argument('--per-socket', action='store_true')
@@ -47,6 +48,7 @@ def check_json_output(expected_items):
       'counter-value': lambda x: is_counter_value(x),
       'cgroup': lambda x: True,
       'cpu': lambda x: isint(x),
+      'cache': lambda x: True,
       'die': lambda x: True,
       'event': lambda x: True,
       'event-runtime': lambda x: isfloat(x),
@@ -83,7 +85,7 @@ try:
     expected_items = 7
   elif args.interval or args.per_thread or args.system_wide_no_aggr:
     expected_items = 8
-  elif args.per_core or args.per_socket or args.per_node or args.per_die:
+  elif args.per_core or args.per_socket or args.per_node or args.per_die or args.per_cache_instance:
     expected_items = 9
   else:
     # If no option is specified, don't check the number of items.

tools/perf/tests/shell/stat+csv_output.sh

@@ -40,6 +40,7 @@ function commachecker()
 	;; "--per-socket")	exp=8
 	;; "--per-node")	exp=8
 	;; "--per-die")		exp=8
+	;; "--per-cache")	exp=8
 	esac
 
 	while read line
@@ -145,6 +146,18 @@ check_per_thread()
 	echo "[Success]"
 }
 
+check_per_cache_instance()
+{
+	echo -n "Checking CSV output: per cache instance "
+	if ParanoidAndNotRoot 0
+	then
+		echo "[Skip] paranoid and not root"
+		return
+	fi
+	perf stat -x$csv_sep --per-cache -a true 2>&1 | commachecker --per-cache
+	echo "[Success]"
+}
+
 check_per_die()
 {
 	echo -n "Checking CSV output: per die "
@@ -222,6 +235,7 @@ if [ $skip_test -ne 1 ]
 then
 	check_system_wide_no_aggr
 	check_per_core
+	check_per_cache_instance
 	check_per_die
 	check_per_socket
 else

tools/perf/tests/shell/stat+json_output.sh

@@ -120,6 +120,18 @@ check_per_thread()
 	echo "[Success]"
 }
 
+check_per_cache_instance()
+{
+	echo -n "Checking json output: per cache_instance "
+	if ParanoidAndNotRoot 0
+	then
+		echo "[Skip] paranoia and not root"
+		return
+	fi
+	perf stat -j --per-cache -a true 2>&1 | $PYTHON $pythonchecker --per-cache
+	echo "[Success]"
+}
+
 check_per_die()
 {
 	echo -n "Checking json output: per die "
@@ -197,6 +209,7 @@ if [ $skip_test -ne 1 ]
 then
 	check_system_wide_no_aggr
 	check_per_core
+	check_per_cache_instance
 	check_per_die
 	check_per_socket
 else