selftests/resctrl: Refactor feature check to use resource and feature name

Feature check in validate_resctrl_feature_request() takes in the test
name string and maps that to what to check per test.

Pass resource and feature names to validate_resctrl_feature_request()
directly rather than deriving them from the test name inside the
function which makes the feature check easier to extend for new test
cases.

Use !! in the return statement to make the boolean conversion more
obvious even if it is not strictly necessary from correctness point of
view (to avoid it looking like the function is returning a freed
pointer).

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>
Cc: <stable@vger.kernel.org> # selftests/resctrl: Remove duplicate feature check from CMT test
Cc: <stable@vger.kernel.org> # selftests/resctrl: Move _GNU_SOURCE define into Makefile
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>

1 files changed, 6 insertions, 4 deletions

diff --git a/tools/testing/selftests/resctrl/resctrl_tests.c b/tools/testing/selftests/resctrl/resctrl_tests.c
index 495aeee5b734..a19dcc3f8fb0 100644
--- a/tools/testing/selftests/resctrl/resctrl_tests.c
+++ b/tools/testing/selftests/resctrl/resctrl_tests.c
@@ -103,7 +103,9 @@ static void run_mbm_test(const char * const *benchmark_cmd, int cpu_no)
 		return;
 	}
 
-	if (!validate_resctrl_feature_request(MBM_STR) || (get_vendor() != ARCH_INTEL)) {
+	if (!validate_resctrl_feature_request("L3_MON", "mbm_total_bytes") ||
+	    !validate_resctrl_feature_request("L3_MON", "mbm_local_bytes") ||
+	    (get_vendor() != ARCH_INTEL)) {
 		ksft_test_result_skip("Hardware does not support MBM or MBM is disabled\n");
 		goto cleanup;
 	}
@@ -128,7 +130,7 @@ static void run_mba_test(const char * const *benchmark_cmd, int cpu_no)
 		return;
 	}
 
-	if (!validate_resctrl_feature_request(MBA_STR) || (get_vendor() != ARCH_INTEL)) {
+	if (!validate_resctrl_feature_request("MB", NULL) || (get_vendor() != ARCH_INTEL)) {
 		ksft_test_result_skip("Hardware does not support MBA or MBA is disabled\n");
 		goto cleanup;
 	}
@@ -151,7 +153,7 @@ static void run_cmt_test(const char * const *benchmark_cmd, int cpu_no)
 		return;
 	}
 
-	if (!validate_resctrl_feature_request(CMT_STR)) {
+	if (!validate_resctrl_feature_request("L3_MON", "llc_occupancy")) {
 		ksft_test_result_skip("Hardware does not support CMT or CMT is disabled\n");
 		goto cleanup;
 	}
@@ -176,7 +178,7 @@ static void run_cat_test(int cpu_no, int no_of_bits)
 		return;
 	}
 
-	if (!validate_resctrl_feature_request(CAT_STR)) {
+	if (!validate_resctrl_feature_request("L3", NULL)) {
 		ksft_test_result_skip("Hardware does not support CAT or CAT is disabled\n");
 		goto cleanup;
 	}