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selftests/resctrl: Allow ->setup() to return errors

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resctrl_val() assumes ->setup() always returns either 0 to continue
tests or < 0 in case of the normal termination of tests after x runs.
The latter overlaps with normal error returns.

Define END_OF_TESTS (=1) to differentiate the normal termination of
tests and return errors as negative values. Alter callers of ->setup()
to handle errors properly.

Fixes: 790bf585b0 ("selftests/resctrl: Add Cache Allocation Technology (CAT) selftest")
Fixes: ecdbb911f2 ("selftests/resctrl: Add MBM test")
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Reviewed-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
This commit is contained in:
Ilpo Järvinen
2023-02-15 15:05:59 +02:00
committed by Shuah Khan
parent c90b3b588e
commit fa10366cc6
7 changed files with 12 additions and 6 deletions
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tools/testing/selftests/resctrl/cache.c
+3 -1
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@@ -244,10 +244,12 @@ int cat_val(struct resctrl_val_param *param)
while (1) {
if (!strncmp(resctrl_val, CAT_STR, sizeof(CAT_STR))) {
ret = param->setup(1, param);
if (ret) {
if (ret == END_OF_TESTS) {
ret = 0;
break;
}
if (ret < 0)
break;
ret = reset_enable_llc_perf(bm_pid, param->cpu_no);
if (ret)
break;