linux-kernel - Re: [PATCH v10 4/8] x86/resctrl: Compute memory bandwidth for all supported events

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Message-ID: <55fc7e8d-1056-4713-ab62-4b518d551de5@intel.com>
Date: Tue, 26 Nov 2024 10:35:40 -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 4/8] x86/resctrl: Compute memory bandwidth for all
 supported events

Hi Tony,

On 11/22/24 3:58 PM, Tony Luck wrote:
> Switching between local and total memory bandwidth events as the input
> to the mba_sc feedback loop would be cumbersome and take effect slowly
> in the current implementation as the bandwidth is only known after two
> consecutive readings of the same event.
> 
> Compute the bandwidth for all supported events. This doesn't add
> significant overhead and will make changing which event is used
> simple.
> 
> Suggested-by: Reinette Chatre <reinette.chatre@...el.com>
> Signed-off-by: Tony Luck <tony.luck@...el.com>
> ---

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

Reinette