[PATCH 1/2] perf tests: Fix "perf stat JSON output linter" test for new output

[James Clark <james.clark@arm.com>]

Commit c4b41b83c250 ("perf stat: Rename "aggregate-number" to
"cpu-count" in JSON") renamed a field, so update the tests to reflect
this.

This fixes the following failure:

  $ sudo ./perf test "json output" -vvv
   96: perf stat JSON output linter                                    :
  --- start ---
  test child forked, pid 327720
  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 Test failed for input:
  ...
  Traceback (most recent call last):
    File "./tools/perf/tests/shell/lib/perf_json_output_lint.py", line 93, in <module>
      check_json_output(expected_items)
    File "./tools/perf/tests/shell/lib/perf_json_output_lint.py", line 78, in check_json_output
      raise RuntimeError(f'Unexpected key: key={key} value={value}')
  RuntimeError: Unexpected key: key=cpu-count value=16
  test child finished with -1
  ---- end ----
  perf stat JSON output linter: FAILED!

Fixes: c4b41b83c250 ("perf stat: Rename "aggregate-number" to "cpu-count" in JSON")
Signed-off-by: James Clark <james.clark@arm.com>
---
 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 d90f8d102eb9..9c073e257d33 100644
--- a/tools/perf/tests/shell/lib/perf_json_output_lint.py
+++ b/tools/perf/tests/shell/lib/perf_json_output_lint.py
@@ -54,7 +54,7 @@ def check_json_output(expected_items):
           raise RuntimeError(f'wrong number of fields. counted {count} expected {expected_items}'
                              f' in \'{line}\'')
   checks = {
-      'aggregate-number': lambda x: isfloat(x),
+      'cpu-count': lambda x: isfloat(x),
       'core': lambda x: True,
       'counter-value': lambda x: is_counter_value(x),
       'cgroup': lambda x: True,
-- 
2.25.1