linux-kernel - Re: [PATCH v11 04/10] x86/resctrl: Add comments on RFTYPE flags hierarchy

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Date:   Mon, 9 Oct 2023 14:39:30 -0500
From:   "Moger, Babu" <babu.moger@....com>
To:     Borislav Petkov <bp@...en8.de>
Cc:     corbet@....net, reinette.chatre@...el.com, tglx@...utronix.de,
        mingo@...hat.com, fenghua.yu@...el.com,
        dave.hansen@...ux.intel.com, x86@...nel.org, hpa@...or.com,
        paulmck@...nel.org, akpm@...ux-foundation.org,
        quic_neeraju@...cinc.com, rdunlap@...radead.org,
        damien.lemoal@...nsource.wdc.com, songmuchun@...edance.com,
        peterz@...radead.org, jpoimboe@...nel.org, pbonzini@...hat.com,
        chang.seok.bae@...el.com, pawan.kumar.gupta@...ux.intel.com,
        jmattson@...gle.com, daniel.sneddon@...ux.intel.com,
        sandipan.das@....com, tony.luck@...el.com, james.morse@....com,
        linux-doc@...r.kernel.org, linux-kernel@...r.kernel.org,
        bagasdotme@...il.com, eranian@...gle.com,
        christophe.leroy@...roup.eu, jarkko@...nel.org,
        adrian.hunter@...el.com, quic_jiles@...cinc.com,
        peternewman@...gle.com
Subject: Re: [PATCH v11 04/10] x86/resctrl: Add comments on RFTYPE flags
 hierarchy

Hi Boris,

On 10/9/23 12:22, Borislav Petkov wrote:
> On Tue, Oct 03, 2023 at 06:54:24PM -0500, Babu Moger wrote:
>> resctrl uses RFTYPE flags for creating resctrl directory structure.
>>
>> Definitions and directory structures are not documented. Add
>> comments to improve the readability and help future additions.
>>
>> Signed-off-by: Babu Moger <babu.moger@....com>
>> Tested-by: Peter Newman <peternewman@...gle.com>
>> Reviewed-by: Peter Newman <peternewman@...gle.com>
>> Tested-by: Tan Shaopeng <tan.shaopeng@...fujitsu.com>
>> Reviewed-by: Tan Shaopeng <tan.shaopeng@...fujitsu.com>
>> Reviewed-by: Fenghua Yu <fenghua.yu@...el.com>
>> Reviewed-by: Reinette Chatre <reinette.chatre@...el.com>
>> Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@...ux.intel.com>
>> ---
>>  arch/x86/kernel/cpu/resctrl/internal.h | 58 ++++++++++++++++++++++++++
>>  1 file changed, 58 insertions(+)
>>
>> diff --git a/arch/x86/kernel/cpu/resctrl/internal.h b/arch/x86/kernel/cpu/resctrl/internal.h
>> index f71bc82c882f..b47a5906f952 100644
>> --- a/arch/x86/kernel/cpu/resctrl/internal.h
>> +++ b/arch/x86/kernel/cpu/resctrl/internal.h
>> @@ -240,6 +240,64 @@ struct rdtgroup {
>>  
>>  /*
>>   * Define the file type flags for base and info directories.
> 
> Why is this lengthy comment explaining internals in a header and not in
> the perfectly fine
> 
> Documentation/arch/x86/resctrl.rst
> 
> file?
> 

User visible files are already documented in resctrl.rst file.

Understanding of these flags are mostly required for programmers. Users
don't need to know all these internal flags. That is why it is listed in here.
-- 
Thanks
Babu Moger