linux-kernel - Re: [PATCH v3] fs/resctrl: Add CONFIG_RESCTRL_ASSIGN

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Message-ID: <e05a4d74-0dba-41b9-8d60-dbd923026531@arm.com>
Date: Wed, 4 Feb 2026 16:12:31 +0000
From: Ben Horgan <ben.horgan@....com>
To: Reinette Chatre <reinette.chatre@...el.com>, linux-kernel@...r.kernel.org
Cc: tony.luck@...el.com, Dave.Martin@....com, james.morse@....com,
 babu.moger@....com, bp@...en8.de
Subject: Re: [PATCH v3] fs/resctrl: Add CONFIG_RESCTRL_ASSIGN_FIXED Kconfig
 entry

Hi Reinette,

On 2/4/26 16:08, Reinette Chatre wrote:
> Hi Ben,
> 
> On 2/4/26 4:02 AM, Ben Horgan wrote:
>> Commit
>>
>>   3b497c3f4f04 ("fs/resctrl: Introduce the interface to display monitoring modes")
>>
>> introduced CONFIG_RESCTRL_ASSIGN_FIXED but left adding the Kconfig entry
>> until it was necessary.
> 
> The changelog flow makes a big leap between its two paragraphs. I cannot tell why the
> middle paragraph was dropped since it describes why the change is needed now to connect
> with the opening context. Could you add a middle paragraph like below?
> 
>   Add CONFIG_RESCTRL_ASSIGN_FIXED in order to support MPAM where the counter assignment
>   mode is indeed fixed.

Sorry, I'll do that now. The omission was simply a mistake.

> 
>>
>> CONFIG_RESCTRL_ASSIGN_FIXED is a resctrl fs Kconfig option so handle
>> attempts to modify counter assignment mode when it is enabled in resctrl fs
>> rather than delegating to arch specific code.
>>
>> Signed-off-by: Ben Horgan <ben.horgan@....com>
>> ---
> Reinette

Thanks,

Ben