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Subject: Re: [PATCH V1 01/13] selftests/resctrl: Fix feature detection
To:     "Prakhya, Sai Praneeth" <sai.praneeth.prakhya@intel.com>,
        "shuah@kernel.org" <shuah@kernel.org>,
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        "bp@alien8.de" <bp@alien8.de>, "Luck, Tony" <tony.luck@intel.com>,
        "babu.moger@amd.com" <babu.moger@amd.com>,
        "james.morse@arm.com" <james.morse@arm.com>,
        "Shankar, Ravi V" <ravi.v.shankar@intel.com>,
        "Yu, Fenghua" <fenghua.yu@intel.com>,
        "x86@kernel.org" <x86@kernel.org>,
        "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>
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 <FFF73D592F13FD46B8700F0A279B802F573084EC@ORSMSX114.amr.corp.intel.com>
From:   Reinette Chatre <reinette.chatre@intel.com>
Message-ID: <b83ba95d-9f0f-4d4f-b68c-c5a612afece4@intel.com>
Date:   Wed, 11 Mar 2020 11:06:33 -0700
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Hi Sai,

On 3/9/2020 3:51 PM, Prakhya, Sai Praneeth wrote:
>> -----Original Message-----
>> From: Reinette Chatre <reinette.chatre@intel.com>
>> Sent: Monday, March 9, 2020 3:34 PM
> 
> [SNIP]
> 
>>> That's a good point and makes sense to me. I think we could fix it in
>>> two ways 1. grep for strings in dmesg but that will still leave
>>> ambiguity in deciding b/w mbm and cqm because kernel prints "resctrl: L3
>> monitoring detected" for both the features 2. Check in "info" directory
>>> 	a. For cat_l3, we could search for info/L3
>>> 	b. For mba, we could search for info/MB
>>> 	c. For cqm and mbm, we could search for specified string in
>>> info/L3_MON/mon_features
>>>
>>> I think option 2 might be better because it can handle all cases, please let me
>> know what you think.
>>
>> I agree. For the reasons you mention and also that (1) may not be possible if the
>> loglevel prevents those lines from being printed.
> 
> Makes sense. I will work on the fix.

One more note about this ... from what I can tell the test for a feature
currently fails if the platform does not support the feature. Would it
be possible to just skip the test in this case instead?

Reinette