@@ -111,9 +111,6 @@ int cat_perf_miss_val(int cpu_no, int n, char *cache_type)
if (ret)
return ret;
- if (!validate_resctrl_feature_request("cat"))
- return -1;
-
/* Get default cbm mask for L3/L2 cache */
ret = get_cbm_mask(cache_type, cbm_mask);
if (ret)
@@ -158,9 +158,6 @@ int mba_schemata_change(int cpu_no, char *bw_report, char **benchmark_cmd)
remove(RESULT_FILE_NAME);
- if (!validate_resctrl_feature_request("mba"))
- return -1;
-
ret = resctrl_val(benchmark_cmd, ¶m);
if (ret)
return ret;
@@ -131,9 +131,6 @@ int mbm_bw_change(int span, int cpu_no, char *bw_report, char **benchmark_cmd)
remove(RESULT_FILE_NAME);
- if (!validate_resctrl_feature_request("mbm"))
- return -1;
-
ret = resctrl_val(benchmark_cmd, ¶m);
if (ret)
return ret;
@@ -60,6 +60,12 @@ static void run_mbm_test(bool has_ben, char **benchmark_cmd, int span,
int res;
ksft_print_msg("Starting MBM BW change ...\n");
+
+ if (!validate_resctrl_feature_request("mbm")) {
+ ksft_test_result_skip("Hardware does not support MBM or MBM is disabled\n");
+ return;
+ }
+
if (!has_ben)
sprintf(benchmark_cmd[5], "%s", MBA_STR);
res = mbm_bw_change(span, cpu_no, bw_report, benchmark_cmd);
@@ -73,6 +79,12 @@ static void run_mba_test(bool has_ben, char **benchmark_cmd, int span,
int res;
ksft_print_msg("Starting MBA Schemata change ...\n");
+
+ if (!validate_resctrl_feature_request("mba")) {
+ ksft_test_result_skip("Hardware does not support MBA or MBA is disabled\n");
+ return;
+ }
+
if (!has_ben)
sprintf(benchmark_cmd[1], "%d", span);
res = mba_schemata_change(cpu_no, bw_report, benchmark_cmd);
@@ -85,6 +97,11 @@ static void run_cmt_test(bool has_ben, char **benchmark_cmd, int cpu_no)
int res;
ksft_print_msg("Starting CMT test ...\n");
+ if (!validate_resctrl_feature_request("cmt")) {
+ ksft_test_result_skip("Hardware does not support CMT or CMT is disabled\n");
+ return;
+ }
+
if (!has_ben)
sprintf(benchmark_cmd[5], "%s", "cmt");
res = cmt_resctrl_val(cpu_no, 5, benchmark_cmd);
@@ -97,6 +114,12 @@ static void run_cat_test(int cpu_no, int no_of_bits)
int res;
ksft_print_msg("Starting CAT test ...\n");
+
+ if (!validate_resctrl_feature_request("cat")) {
+ ksft_test_result_skip("Hardware does not support CAT or CAT is disabled\n");
+ return;
+ }
+
res = cat_perf_miss_val(cpu_no, no_of_bits, "L3");
ksft_test_result(!res, "CAT: test\n");
cat_test_cleanup();
There could be two reasons why a resctrl feature might not be enabled on the platform 1. H/W might not support the feature 2. Even if the H/W supports it, the user might have disabled the feature through kernel command line arguments Hence, any resctrl unit test (like cmt, cat, mbm and mba) before starting the test will first check if the feature is enabled on the platform or not. If the feature isn't enabled, then the test returns with an error status. For example, if MBA isn't supported on a platform and if the user tries to run MBA, the output will look like this ok mounting resctrl to "/sys/fs/resctrl" not ok MBA: schemata change But, not supporting a feature isn't a test failure. So, instead of treating it as an error, use the SKIP directive of the TAP protocol. With the change, the output will look as below ok MBA # SKIP Hardware does not support MBA or MBA is disabled Suggested-by: Reinette Chatre <reinette.chatre@intel.com> Signed-off-by: Fenghua Yu <fenghua.yu@intel.com> --- tools/testing/selftests/resctrl/cat_test.c | 3 --- tools/testing/selftests/resctrl/mba_test.c | 3 --- tools/testing/selftests/resctrl/mbm_test.c | 3 --- .../testing/selftests/resctrl/resctrl_tests.c | 23 +++++++++++++++++++ 4 files changed, 23 insertions(+), 9 deletions(-)