pert tests: Update metric-value for perf stat JSON output

There may be multiplexing triggered, e.g., e-core of ADL.

Reviewed-by: Ian Rogers <irogers@google.com>
Signed-off-by: Kan Liang <kan.liang@linux.intel.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Ahmad Yasin <ahmad.yasin@intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: https://lore.kernel.org/r/20230615135315.3662428-7-kan.liang@linux.intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

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

@@ -66,10 +66,10 @@ def check_json_output(expected_items):
   for item in json.loads(input):
     if expected_items != -1:
       count = len(item)
-      if count != expected_items and count >= 1 and count <= 4 and 'metric-value' in item:
+      if count != expected_items and count >= 1 and count <= 6 and 'metric-value' in item:
         # Events that generate >1 metric may have isolated metric
-        # values and possibly other prefixes like interval, core and
-        # aggregate-number.
+        # values and possibly other prefixes like interval, core,
+        # aggregate-number, or event-runtime/pcnt-running from multiplexing.
         pass
       elif count != expected_items and count >= 1 and count <= 5 and 'metricgroup' in item:
         pass