linux-kernel - Re: [PATCH v9 9/9] x86/resctrl: Display RMID of resource group

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Message-ID: <fbf1f7e5-1a82-303c-3802-2f246505c8a4@intel.com>
Date:   Mon, 11 Sep 2023 16:08:07 -0700
From:   Reinette Chatre <reinette.chatre@...el.com>
To:     Babu Moger <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>,
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        <jpoimboe@...nel.org>, <pbonzini@...hat.com>,
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        <quic_jiles@...cinc.com>, <peternewman@...gle.com>
Subject: Re: [PATCH v9 9/9] x86/resctrl: Display RMID of resource group

Hi Babu,

On 9/7/2023 4:51 PM, Babu Moger wrote:
> In x86, hardware uses RMID to identify a a monitoring group. When a
> user creates a monitor group these details are not visible. These details
> can help resctrl debugging.
> 
> Add RMID(mon_hw_id) to the monitor groups display in resctrl interface.
> Users can see these details when resctrl is mounted with "-o debug" option.
> 
> Other architectures do not use "RMID". Use the name mon_hw_id to refer
> to "RMID" in an effort to keep the naming generic.
> 
> Add the flag RFTYPE_MON_BASE, which contains the files required only
> for the MON group.

As I mentioned in [1] I believe adding support for files with RFTYPE_MON flag
to resctrl needs to be in a separate patch. With the core support added a file
with this flag can be introduced separately. 

Reinette

[1] https://lore.kernel.org/lkml/2feb3e01-96c7-fdde-a0d2-509fa1527243@intel.com/