perf test: Send list output to stdout rather than stderr

Follow the workload listing in using stdout rather than
stderr. Correct the numbering of sub-tests to be 1.1 rather than 1:1.

Signed-off-by: Ian Rogers <irogers@google.com>
Reviewed-by: Namhyung Kim <namhyung@kernel.org>
Cc: James Clark <james.clark@linaro.org>
Link: https://lore.kernel.org/r/20250110045736.598281-3-irogers@google.com
Signed-off-by: Namhyung Kim <namhyung@kernel.org>

Author: captain5050

tools/perf/tests/builtin-test.c

@@ -579,7 +579,7 @@ static int __cmd_test(struct test_suite **suites, int argc, const char *argv[],
 	return err;
 }
 
-static int perf_test__list(struct test_suite **suites, int argc, const char **argv)
+static int perf_test__list(FILE *fp, struct test_suite **suites, int argc, const char **argv)
 {
 	int curr_suite = 0;
 
@@ -589,13 +589,13 @@ static int perf_test__list(struct test_suite **suites, int argc, const char **ar
 		if (!perf_test__matches(test_description(*t, -1), curr_suite, argc, argv))
 			continue;
 
-		pr_info("%3d: %s\n", curr_suite + 1, test_description(*t, -1));
+		fprintf(fp, "%3d: %s\n", curr_suite + 1, test_description(*t, -1));
 
 		if (test_suite__num_test_cases(*t) <= 1)
 			continue;
 
 		test_suite__for_each_test_case(*t, curr_test_case) {
-			pr_info("%3d:%1d: %s\n", curr_suite + 1, curr_test_case + 1,
+			fprintf(fp, "%3d.%1d: %s\n", curr_suite + 1, curr_test_case + 1,
 				test_description(*t, curr_test_case));
 		}
 	}
@@ -721,7 +721,7 @@ int cmd_test(int argc, const char **argv)
 	argc = parse_options_subcommand(argc, argv, test_options, test_subcommands, test_usage, 0);
 	if (argc >= 1 && !strcmp(argv[0], "list")) {
 		suites = build_suites();
-		ret = perf_test__list(suites, argc - 1, argv + 1);
+		ret = perf_test__list(stdout, suites, argc - 1, argv + 1);
 		free(suites);
 		return ret;
 	}