[PATCH] perf test: Fix perf stat JSON output test

[Namhyung Kim <namhyung@kernel.org>]

The recent --per-cache option test caused a problem.  According to
the option name, I think it should check args.per_cache instead of
args.per_cache_instance.

  $ sudo ./perf test -v 99
   99: perf stat JSON output linter                                    :
  --- start ---
  test child forked, pid 3086101
  Checking json output: no args [Success]
  Checking json output: system wide [Success]
  Checking json output: interval [Success]
  Checking json output: event [Success]
  Checking json output: per thread [Success]
  Checking json output: per node [Success]
  Checking json output: system wide no aggregation [Success]
  Checking json output: per core [Success]
  Checking json output: per cache_instance Test failed for input:
  ...
  Traceback (most recent call last):
    File "linux/tools/perf/tests/shell/lib/perf_json_output_lint.py", line 88, in <module>
      elif args.per_core or args.per_socket or args.per_node or args.per_die or args.per_cache_instance:
  AttributeError: 'Namespace' object has no attribute 'per_cache_instance'
  test child finished with -1
  ---- end ----
  perf stat JSON output linter: FAILED!

Fixes: bfce728db317 ("pert tests: Add tests for new "perf stat --per-cache" aggregation option")
Cc: K Prateek Nayak <kprateek.nayak@amd.com>
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
---
 tools/perf/tests/shell/lib/perf_json_output_lint.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/perf/tests/shell/lib/perf_json_output_lint.py b/tools/perf/tests/shell/lib/perf_json_output_lint.py
index 4acaaed5560d..b81582a89d36 100644
--- a/tools/perf/tests/shell/lib/perf_json_output_lint.py
+++ b/tools/perf/tests/shell/lib/perf_json_output_lint.py
@@ -85,7 +85,7 @@ Lines = args.file.readlines()
     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 or args.per_cache_instance:
+  elif args.per_core or args.per_socket or args.per_node or args.per_die or args.per_cache:
     expected_items = 9
   else:
     # If no option is specified, don't check the number of items.
-- 
2.41.0.rc0.172.g3f132b7071-goog