Re: IBS perf test failures on 9950x3d

From: Ravi Bangoria
Date: Mon May 19 2025 - 12:39:51 EST


Hi Namhyung,

>>> If it needs a specific kernel, then the test needs to cope with that,
>>> etc.
>>
>> 1) Bunch of IBS kernel fixes went in recently (v6.15-rc1):
>>
>> https://lore.kernel.org/r/20250115054438.1021-1-ravi.bangoria@xxxxxxx
>>
>> Since you are running on 6.14.5-300.fc42.x86_64, the failures are
>> genuine and indicating that kernel should be fixed.
>>
>> I'm wondering how would the test cope with the buggy kernel. Or
>> probably 'perf test' a wrong place to put such selftests?
>
> Maybe... some kernel internal changes can be tested in the selftest.
>
> And 'perf test' should work with any kernel versions. Is the test
> checking any invalid configs? Probably then it should move to the
> selftest so that it can be tied to the fixed kernels and 'perf test'
> should only use valid configs.

Sure. I'll prepare a patch to move this test from 'perf test' to
tools/testing/selftest/.

Thanks,
Ravi