linux-kernel - Re: [PATCH v10 7/8] x86/resctrl: Add write option to "mba_MBps

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Message-ID: <07e35337-45e4-4c44-ba58-62938ae6ea8f@intel.com>
Date: Tue, 26 Nov 2024 10:41:24 -0800
From: Reinette Chatre <reinette.chatre@...el.com>
To: Tony Luck <tony.luck@...el.com>, Fenghua Yu <fenghua.yu@...el.com>, "Peter
 Newman" <peternewman@...gle.com>, Jonathan Corbet <corbet@....net>,
	<x86@...nel.org>
CC: James Morse <james.morse@....com>, Jamie Iles <quic_jiles@...cinc.com>,
	Babu Moger <babu.moger@....com>, Randy Dunlap <rdunlap@...radead.org>,
	"Shaopeng Tan (Fujitsu)" <tan.shaopeng@...itsu.com>,
	<linux-kernel@...r.kernel.org>, <linux-doc@...r.kernel.org>,
	<patches@...ts.linux.dev>
Subject: Re: [PATCH v10 7/8] x86/resctrl: Add write option to "mba_MBps_event"
 file

Hi Tony,

On 11/22/24 3:58 PM, Tony Luck wrote:
> The "mba_MBps" mount option provides an alternate method to control memory
> bandwidth. Instead of specifying allowable bandwidth as a percentage of
> maximum possible, the user provides a MiB/s limit value.
> 
> There is a file in each CTRL_MON group directory that shows the event
> currently in use.
> 
> Allow writing that file to choose a different event.
> 
> A user can choose any of the memory bandwidth monitoring events listed in
> /sys/fs/resctrl/info/L3_mon/mon_features independently for each CTRL_MON
> group by writing to each of the "mba_MBps_event" files.
> 
> Signed-off-by: Tony Luck <tony.luck@...el.com>
> ---

Reviewed-by: Reinette Chatre <reinette.chatre@...el.com>

Reinette