diff mbox series

[v5,8/8] selftests/resctrl: Cleanup benchmark argument parsing

Message ID 20230904095339.11321-9-ilpo.jarvinen@linux.intel.com
State Accepted
Commit f23c7925e98a1f0d9e3ee93a856dfe3d1288a3f0
Headers show
Series None | expand

Commit Message

Ilpo Järvinen Sept. 4, 2023, 9:53 a.m. UTC
Benchmark argument is handled by custom argument parsing code which is
more complicated than it needs to be.

Process benchmark argument within the normal getopt() handling and drop
unnecessary ben_ind and has_ben variables. When -b is given, terminate
the argument processing as -b consumes all remaining arguments.

Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Tested-by: Shaopeng Tan <tan.shaopeng@jp.fujitsu.com>
Reviewed-by: Reinette Chatre <reinette.chatre@intel.com>
Reviewed-by: Shaopeng Tan <tan.shaopeng@jp.fujitsu.com>
Reviewed-by: "Wieczor-Retman, Maciej" <maciej.wieczor-retman@intel.com>
---
 .../testing/selftests/resctrl/resctrl_tests.c | 46 +++++++++----------
 1 file changed, 23 insertions(+), 23 deletions(-)
diff mbox series

Patch

diff --git a/tools/testing/selftests/resctrl/resctrl_tests.c b/tools/testing/selftests/resctrl/resctrl_tests.c
index 48e5afb1530c..823672a20a43 100644
--- a/tools/testing/selftests/resctrl/resctrl_tests.c
+++ b/tools/testing/selftests/resctrl/resctrl_tests.c
@@ -169,27 +169,34 @@  static void run_cat_test(int cpu_no, int no_of_bits)
 
 int main(int argc, char **argv)
 {
-	bool has_ben = false, mbm_test = true, mba_test = true, cmt_test = true;
-	int c, cpu_no = 1, argc_new = argc, i, no_of_bits = 0;
-	const char *benchmark_cmd[BENCHMARK_ARGS];
-	int ben_ind, tests = 0;
+	bool mbm_test = true, mba_test = true, cmt_test = true;
+	const char *benchmark_cmd[BENCHMARK_ARGS] = {};
+	int c, cpu_no = 1, i, no_of_bits = 0;
 	char *span_str = NULL;
 	bool cat_test = true;
+	int tests = 0;
 	int ret;
 
-	for (i = 0; i < argc; i++) {
-		if (strcmp(argv[i], "-b") == 0) {
-			ben_ind = i + 1;
-			argc_new = ben_ind - 1;
-			has_ben = true;
-			break;
-		}
-	}
-
-	while ((c = getopt(argc_new, argv, "ht:b:n:p:")) != -1) {
+	while ((c = getopt(argc, argv, "ht:b:n:p:")) != -1) {
 		char *token;
 
 		switch (c) {
+		case 'b':
+			/*
+			 * First move optind back to the (first) optarg and
+			 * then build the benchmark command using the
+			 * remaining arguments.
+			 */
+			optind--;
+			if (argc - optind >= BENCHMARK_ARGS)
+				ksft_exit_fail_msg("Too long benchmark command");
+
+			/* Extract benchmark command from command line. */
+			for (i = 0; i < argc - optind; i++)
+				benchmark_cmd[i] = argv[i + optind];
+			benchmark_cmd[i] = NULL;
+
+			goto last_arg;
 		case 't':
 			token = strtok(optarg, ",");
 
@@ -238,6 +245,7 @@  int main(int argc, char **argv)
 			return -1;
 		}
 	}
+last_arg:
 
 	ksft_print_header();
 
@@ -257,15 +265,7 @@  int main(int argc, char **argv)
 
 	filter_dmesg();
 
-	if (has_ben) {
-		if (argc - ben_ind >= BENCHMARK_ARGS)
-			ksft_exit_fail_msg("Too long benchmark command.\n");
-
-		/* Extract benchmark command from command line. */
-		for (i = 0; i < argc - ben_ind; i++)
-			benchmark_cmd[i] = argv[i + ben_ind];
-		benchmark_cmd[i] = NULL;
-	} else {
+	if (!benchmark_cmd[0]) {
 		/* If no benchmark is given by "-b" argument, use fill_buf. */
 		benchmark_cmd[0] = "fill_buf";
 		ret = asprintf(&span_str, "%u", DEFAULT_SPAN);