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selftests/resctrl: Fix feature checks

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The MBA and CMT tests expect support of other features to be able to
run.

When platform only supports MBA but not MBM, MBA test will fail with:
Failed to open total bw file: No such file or directory

When platform only supports CMT but not CAT, CMT test will fail with:
Failed to open bit mask file '/sys/fs/resctrl/info/L3/cbm_mask': No such file or directory

It leads to the test reporting test fail (even if no test was run at
all).

Extend feature checks to cover these two conditions to show these tests
were skipped rather than failed.

Fixes: ee0415681e ("selftests/resctrl: Use resctrl/info for feature detection")
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: Refactor feature check to use resource and feature name
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
This commit is contained in:
Ilpo Järvinen 2023-10-02 12:48:12 +03:00 • committed by Shuah Khan
parent d56e5da0e0
commit 06035f0194
1 changed files with 5 additions and 2 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

7
tools/testing/selftests/resctrl/resctrl_tests.c
View file

@ -130,7 +130,9 @@ static void run_mba_test(const char * const *benchmark_cmd, int cpu_no)
return;
}
if (!validate_resctrl_feature_request("MB", NULL) || (get_vendor() != ARCH_INTEL)) {
if (!validate_resctrl_feature_request("MB", NULL) ||
!validate_resctrl_feature_request("L3_MON", "mbm_local_bytes") ||
(get_vendor() != ARCH_INTEL)) {
ksft_test_result_skip("Hardware does not support MBA or MBA is disabled\n");
goto cleanup;
}
@ -153,7 +155,8 @@ static void run_cmt_test(const char * const *benchmark_cmd, int cpu_no)
return;
}
if (!validate_resctrl_feature_request("L3_MON", "llc_occupancy")) {
if (!validate_resctrl_feature_request("L3_MON", "llc_occupancy") ||
!validate_resctrl_feature_request("L3", NULL)) {
ksft_test_result_skip("Hardware does not support CMT or CMT is disabled\n");
goto cleanup;
}