iv/linux
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

selftests/resctrl: Skip the test if requested resctrl feature is not supported

Browse Source 
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>
Tested-by: Babu Moger <babu.moger@amd.com>
Signed-off-by: Fenghua Yu <fenghua.yu@intel.com>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
This commit is contained in:
Fenghua Yu 2021-03-17 02:22:51 +00:00 committed by Shuah Khan
parent c9fb4e7cee
commit f1dd71982d
4 changed files with 23 additions and 9 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
tools/testing/selftests/resctrl/cat_test.c
View File

@ -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)

3
tools/testing/selftests/resctrl/mba_test.c
View File

@ -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, &param);
if (ret)
return ret;

3
tools/testing/selftests/resctrl/mbm_test.c
View File

@ -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, &param);
if (ret)
return ret;

23
tools/testing/selftests/resctrl/resctrl_tests.c
View File

@ -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_STR)) {
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_STR)) {
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_STR)) {
ksft_test_result_skip("Hardware does not support CMT or CMT is disabled\n");
return;
}
if (!has_ben)
sprintf(benchmark_cmd[5], "%s", CMT_STR);
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_STR)) {
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();