linux-kernel - Re: [PATCH v10 25/30] x86,fs/resctrl: Move the resctrl filesystem code to live in /fs/resctrl

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Message-ID: <8319255e-82e8-47e8-a7f8-cd42df04e32a@intel.com>
Date: Thu, 8 May 2025 11:22:42 -0700
From: Reinette Chatre <reinette.chatre@...el.com>
To: Yury Norov <yury.norov@...il.com>, James Morse <james.morse@....com>
CC: <x86@...nel.org>, <linux-kernel@...r.kernel.org>, 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>, <fenghuay@...dia.com>
Subject: Re: [PATCH v10 25/30] x86,fs/resctrl: Move the resctrl filesystem
 code to live in /fs/resctrl

Hi Yury,

On 5/8/25 11:18 AM, Yury Norov wrote:
> On Thu, May 08, 2025 at 05:18:53PM +0000, James Morse wrote:
>> Resctrl is a filesystem interface to hardware that provides cache
>> allocation policy and bandwidth control for groups of tasks or CPUs.
>>
>> To support more than one architecture, resctrl needs to live in /fs/.
>>
>> Move the code that is concerned with the filesystem interface to
>> /fs/resctrl.
>>
>> Signed-off-by: James Morse <james.morse@....com>
>> ---
>> Changes since *:
>>  * This patch is generated by a script.
>> ---
>>  arch/x86/kernel/cpu/resctrl/ctrlmondata.c     |  637 ---
>>  arch/x86/kernel/cpu/resctrl/internal.h        |  366 +-
>>  arch/x86/kernel/cpu/resctrl/monitor.c         |  902 +---
>>  arch/x86/kernel/cpu/resctrl/monitor_trace.h   |   18 +-
>>  arch/x86/kernel/cpu/resctrl/pseudo_lock.c     | 1080 +---
>>  .../kernel/cpu/resctrl/pseudo_lock_trace.h    |    2 +
>>  arch/x86/kernel/cpu/resctrl/rdtgroup.c        | 4311 +---------------
>>  fs/resctrl/ctrlmondata.c                      |  661 +++
>>  fs/resctrl/internal.h                         |  428 ++
>>  fs/resctrl/monitor.c                          |  932 ++++
>>  fs/resctrl/monitor_trace.h                    |   33 +
>>  fs/resctrl/pseudo_lock.c                      | 1115 +++++
>>  fs/resctrl/pseudo_lock_trace.h                |   17 +
>>  fs/resctrl/rdtgroup.c                         | 4346 +++++++++++++++++
>>  14 files changed, 7549 insertions(+), 7299 deletions(-)
> 
> There's no MAINTAINERS record for the new files. Did I miss
> something?

Thanks for taking a look!

These files are created/introduced in earlier patch, "fs/resctrl: Add boiler plate for external resctrl code"
[1] with the MAINTAINERS record updated in that patch.

Reinette

[1] https://lore.kernel.org/lkml/20250508171858.9197-16-james.morse@arm.com/