linux-kernel - Re: [PATCH v10 08/10] x86/resctrl: Display CLOSID for resource group

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Date:   Mon, 25 Sep 2023 14:19:07 -0700
From:   Fenghua Yu <fenghua.yu@...el.com>
To:     Babu Moger <babu.moger@....com>, <corbet@....net>,
        <reinette.chatre@...el.com>, <tglx@...utronix.de>,
        <mingo@...hat.com>, <bp@...en8.de>
CC:     <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>, <songmuchun@...edance.com>,
        <peterz@...radead.org>, <jpoimboe@...nel.org>,
        <pbonzini@...hat.com>, <chang.seok.bae@...el.com>,
        <pawan.kumar.gupta@...ux.intel.com>, <jmattson@...gle.com>,
        <daniel.sneddon@...ux.intel.com>, <sandipan.das@....com>,
        <tony.luck@...el.com>, <james.morse@....com>,
        <linux-doc@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <bagasdotme@...il.com>, <eranian@...gle.com>,
        <christophe.leroy@...roup.eu>, <jarkko@...nel.org>,
        <adrian.hunter@...el.com>, <quic_jiles@...cinc.com>,
        <peternewman@...gle.com>
Subject: Re: [PATCH v10 08/10] x86/resctrl: Display CLOSID for resource group



On 9/15/23 15:42, Babu Moger wrote:
> In x86, hardware uses CLOSID to identify a control group. When a user
> creates a control group this information is not visible to the user.
> It can help resctrl debugging.
> 
> Add CLOSID(ctrl_hw_id) to the control groups display in resctrl
> interface. Users can see this detail when resctrl is mounted with
> "-o debug" option.
> 
> Other architectures do not use "CLOSID". Use the names ctrl_hw_id
> to refer to "CLOSID" in an effort to keep the naming generic.
> 
> For example:
>   $cat /sys/fs/resctrl/ctrl_grp1/ctrl_hw_id
>   1
> 
> Signed-off-by: Babu Moger <babu.moger@....com>

Reviewed-by: Fenghua Yu <fenghua.yu@...el.com>

Thanks.

-Fenghua