diff mbox series

[02/22] selftests/resctrl: Check also too low values for CBM bits

Message ID 20230412132122.29452-3-ilpo.jarvinen@linux.intel.com (mailing list archive)
State New
Headers show
Series selftests/resctrl: Fixes, cleanups, and rewritten CAT test | expand

Commit Message

Ilpo Järvinen April 12, 2023, 1:21 p.m. UTC
CAT test only validates that the number of CBM bits is not too large
but it could be too small too.

Check and return error before starting the CAT test if the number of
CBM bits is too small.

Fixes: 09a67934625a ("selftests/resctrl: Don't hard code value of "no_of_bits" variable")
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
---
 tools/testing/selftests/resctrl/cat_test.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
diff mbox series

Patch

diff --git a/tools/testing/selftests/resctrl/cat_test.c b/tools/testing/selftests/resctrl/cat_test.c
index 08070d4fa735..de2860bf5d80 100644
--- a/tools/testing/selftests/resctrl/cat_test.c
+++ b/tools/testing/selftests/resctrl/cat_test.c
@@ -130,7 +130,7 @@  int cat_perf_miss_val(int cpu_no, int n, char *cache_type)
 	if (!n)
 		n = count_of_bits / 2;
 
-	if (n > count_of_bits - 1) {
+	if (n < 1 || n > count_of_bits - 1) {
 		ksft_print_msg("Invalid input value for no_of_bits n!\n");
 		ksft_print_msg("Please enter value in range 1 to %d\n",
 			       count_of_bits - 1);