linux-kernel - Re: [PATCH v7 12/49] x86/resctrl: Move rdt_find_domain() to be visible to arch and fs code

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Message-ID: <e1711245-ba1f-437c-a126-83130fc0a5c3@nvidia.com>
Date: Thu, 6 Mar 2025 13:08:42 -0800
From: Fenghua Yu <fenghuay@...dia.com>
To: James Morse <james.morse@....com>, x86@...nel.org,
 linux-kernel@...r.kernel.org
Cc: Reinette Chatre <reinette.chatre@...el.com>,
 Thomas Gleixner <tglx@...utronix.de>, Ingo Molnar <mingo@...hat.com>,
 Borislav Petkov <bp@...en8.de>, H Peter Anvin <hpa@...or.com>,
 Babu Moger <Babu.Moger@....com>, shameerali.kolothum.thodi@...wei.com,
 D Scott Phillips OS <scott@...amperecomputing.com>,
 carl@...amperecomputing.com, lcherian@...vell.com,
 bobo.shaobowang@...wei.com, tan.shaopeng@...itsu.com,
 baolin.wang@...ux.alibaba.com, Jamie Iles <quic_jiles@...cinc.com>,
 Xin Hao <xhao@...ux.alibaba.com>, peternewman@...gle.com,
 dfustini@...libre.com, amitsinght@...vell.com,
 David Hildenbrand <david@...hat.com>, Rex Nie <rex.nie@...uarmicro.com>,
 Dave Martin <dave.martin@....com>, Koba Ko <kobak@...dia.com>,
 Shanker Donthineni <sdonthineni@...dia.com>
Subject: Re: [PATCH v7 12/49] x86/resctrl: Move rdt_find_domain() to be
 visible to arch and fs code


On 2/28/25 11:58, James Morse wrote:
> rdt_find_domain() finds a domain given a resource and a cache-id.
> This is used by both the architecture code and the filesystem code.
>
> After the filesystem code moves to live in /fs/, this helper is either
> duplicated by all architectures, or needs exposing by the filesystem code.
>
> Add the definition to the global header file. As its now globally visible,
> and has only a handful of callers, swap the 'rdt' for 'resctrl'. Move
> the function to live with its caller in ctrlmondata.c as the filesystem
> code will not have anything corresponding to core.c.
>
> Signed-off-by: James Morse <james.morse@....com>

Reviewed-by: Fenghua Yu <fenghuay@...dia.com>


Thanks.


-Fenghua