linux-kernel - Re: [PATCH v4 2/7] x86/resctrl: Remove unnecessary rftype flags

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Date:   Fri, 5 May 2023 11:54:06 -0700
From:   Reinette Chatre <reinette.chatre@...el.com>
To:     "Moger, Babu" <Babu.Moger@....com>,
        "corbet@....net" <corbet@....net>,
        "tglx@...utronix.de" <tglx@...utronix.de>,
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        "dave.hansen@...ux.intel.com" <dave.hansen@...ux.intel.com>,
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Subject: Re: [PATCH v4 2/7] x86/resctrl: Remove unnecessary rftype flags

Hi Babu,

On 5/5/2023 11:31 AM, Moger, Babu wrote:
> [AMD Official Use Only - General]
> 
> Hi Reinette,
> 
>> -----Original Message-----
>> From: Reinette Chatre <reinette.chatre@...el.com>
>> Sent: Thursday, May 4, 2023 1:59 PM
>> To: Moger, Babu <Babu.Moger@....com>; corbet@....net;
>> tglx@...utronix.de; mingo@...hat.com; bp@...en8.de
>> Cc: 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; Das1, Sandipan
>> <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 v4 2/7] x86/resctrl: Remove unnecessary rftype flags
>>
>> Hi Babu,
>>
>> On 4/17/2023 4:34 PM, Babu Moger wrote:
>>> Remove unnecessary rftype flags to avoid multiple indirection.
>>
>> Could you please elaborate what makes these flags unnecessary?
> 
> Yea. Probably should not say unnecessary.
> How about this ?
> "rftype flags have two prefixes, RFTYPE_ and RF_. Remove the flag names with suffix RF_ and avoid indirection."

I do not think that having a different prefix is a motivation
for a flag to be removed. Having a different prefix could
rather be a motivation for a flag to be renamed to a consistent
name.

Could you please describe the problem being solved?
That will help to clarify if this patch is really needed.

Reinette