linux-kernel - Re: [PATCH v6 0/3] x86/resctrl: Implement rename to help move containers' tasks

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Message-ID: <bb41bb82-d950-f458-3b46-7751353cc503@intel.com>
Date:   Thu, 1 Jun 2023 14:38:53 -0700
From:   Reinette Chatre <reinette.chatre@...el.com>
To:     <babu.moger@....com>, Peter Newman <peternewman@...gle.com>,
        <fenghua.yu@...el.com>, "x86@...nel.org" <x86@...nel.org>
CC:     <bp@...en8.de>, <dave.hansen@...ux.intel.com>,
        <eranian@...gle.com>, <gupasani@...gle.com>, <hpa@...or.com>,
        <james.morse@....com>, <linux-kernel@...r.kernel.org>,
        <mingo@...hat.com>, <skodak@...gle.com>, <tglx@...utronix.de>,
        <tony.luck@...el.com>
Subject: Re: [PATCH v6 0/3] x86/resctrl: Implement rename to help move
 containers' tasks

Hi x86 Maintainers,

Could you please consider this series for inclusion?

Thank you very much

Reinette


On 5/3/2023 7:50 AM, Moger, Babu wrote:
> Tested the series. Looks good.
> 
> Tested-by: Babu Moger <babu.moger@....com>
> 
> On 4/19/23 07:50, Peter Newman wrote:
>> Hi Reinette, Fenghua,
>>
>> This patch series implements the solution Reinette suggested in the
>> earlier RFD thread[1] for the problem of moving a container's tasks to a
>> different control group on systems that don't provide enough CLOSIDs to
>> give every container its own control group.
>>
>> This patch series assumes that a MON group's CLOSID can simply be
>> changed to that of a new parent CTRL_MON group. This is allowed on Intel
>> and AMD, but not MPAM implementations. While we (Google) only foresee
>> needing this functionality on Intel and AMD systems, this series should
>> hopefully be a good starting point for supporting MPAM.
>>
>> Thanks!
>> -Peter
>>
>> Updates:
>>
>> v6:
>>  - rebase to v6.3-rc7
>>  - clarify changelog wording
>>  - clarify error message for non-directory move
>>  - remove unneeded parenthesis for checkpatch.pl --strict
>>  - add Reviewed-By's from Reinette
>>
>> v5:
>>  - rebase to v6.3-rc4
>>  - dropped rdt_move_group_tasks() task filter patch
>>  - code/comment clarifications and errno updates requested by Reinette
>>  - added Documentation patch
>>
>> v4:
>>  - rebase to v6.2
>>  - commit message updates suggested by Reinette
>>  - replace rdt_move_one_task() patch with rdt_move_group_tasks() filter
>>    function patch
>>  - prevent rename on files or renaming to "mon_groups"
>>  - optimize simple rename case
>>  - disallow renaming groups with non-empty cpumask
>>  - ensure source is a proper MON group directory
>>  - fix missing rdtgrp->closid update
>>  - add more last_command_status output
>>
>> v3: use revised task CLOSID/RMID update IPI sync method from [3]
>> v2: reworded change logs based on what I've learned from review comments
>>     in another patch series[2]
>>
>> [v1] https://lore.kernel.org/lkml/20221115154515.952783-1-peternewman@google.com/
>> [v2] https://lore.kernel.org/lkml/20221129120149.1035444-1-peternewman@google.com/
>> [v3] https://lore.kernel.org/lkml/20230125101334.1069060-1-peternewman@google.com/
>> [v4] https://lore.kernel.org/lkml/20230308131452.383914-1-peternewman@google.com/
>> [v5] https://lore.kernel.org/lkml/20230330135558.1019658-1-peternewman@google.com/
>>
>> [1] https://lore.kernel.org/lkml/7b09fb62-e61a-65b9-a71e-ab725f527ded@intel.com/
>> [2] https://lore.kernel.org/lkml/54e50a9b-268f-2020-f54c-d38312489e2f@intel.com/
>> [3] https://lore.kernel.org/lkml/20221220161123.432120-1-peternewman@google.com/
>>
>> Peter Newman (3):
>>   x86/resctrl: Factor rdtgroup lock for multi-file ops
>>   x86/resctrl: Implement rename op for mon groups
>>   Documentation/x86: Documentation for MON group move feature
>>
>>  Documentation/x86/resctrl.rst          |   7 ++
>>  arch/x86/kernel/cpu/resctrl/rdtgroup.c | 163 +++++++++++++++++++++++--
>>  2 files changed, 157 insertions(+), 13 deletions(-)
>>
>>
>> base-commit: 6a8f57ae2eb07ab39a6f0ccad60c760743051026
>