linux-kernel - Re: [PATCH v9 1/9] x86/resctrl: Add multiple tasks to the resctrl group at once

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Message-ID: <643c5a52-451e-2f0d-5238-7611a632e4ba@intel.com>
Date:   Mon, 11 Sep 2023 10:51:56 -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 v9 1/9] x86/resctrl: Add multiple tasks to the resctrl
 group at once



On 9/7/23 16:51, Babu Moger wrote:
> The resctrl task assignment for monitor or control group needs to be
> done one at a time. For example:
> 
>    $mount -t resctrl resctrl /sys/fs/resctrl/
>    $mkdir /sys/fs/resctrl/ctrl_grp1
>    $echo 123 > /sys/fs/resctrl/ctrl_grp1/tasks
>    $echo 456 > /sys/fs/resctrl/ctrl_grp1/tasks
>    $echo 789 > /sys/fs/resctrl/ctrl_grp1/tasks
> 
> This is not user-friendly when dealing with hundreds of tasks.
> 
> Support multiple task assignment in one command with tasks ids separated
> by commas. For example:
>    $echo 123,456,789 > /sys/fs/resctrl/ctrl_grp1/tasks
> 
> Reviewed-by: Tan Shaopeng <tan.shaopeng@...fujitsu.com>
> Tested-by: Tan Shaopeng <tan.shaopeng@...fujitsu.com>
> Reviewed-by: Reinette Chatre <reinette.chatre@...el.com>
> Signed-off-by: Babu Moger <babu.moger@....com>

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

Thanks.

-Fenghua