linux-kernel - Re: [PATCH v2] x86/resctrl: Implement new mba

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Message-ID: <45d2891e-989a-45c9-a527-8b14ff5f8748@intel.com>
Date: Mon, 22 Jan 2024 09:34:39 -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>, <x86@...nel.org>
CC: James Morse <james.morse@....com>, Jamie Iles <quic_jiles@...cinc.com>,
	Babu Moger <babu.moger@....com>, Xiaochen Shen <xiaochen.shen@...el.com>,
	<linux-kernel@...r.kernel.org>, <patches@...ts.linux.dev>
Subject: Re: [PATCH v2] x86/resctrl: Implement new mba_MBps throttling
 heuristic

Hi Tony,

On 1/18/2024 1:42 PM, Tony Luck wrote:

> @@ -520,7 +517,7 @@ static void update_mba_bw(struct rdtgroup *rgrp, struct rdt_domain *dom_mbm)
>  {
>  	u32 closid, rmid, cur_msr_val, new_msr_val;
>  	struct mbm_state *pmbm_data, *cmbm_data;
> -	u32 cur_bw, delta_bw, user_bw;
> +	u32 cur_bw, user_bw;
>  	struct rdt_resource *r_mba;
>  	struct rdt_domain *dom_mba;
>  	struct list_head *head;

I am sorry Tony, this reverse-fir breakage slipped through. I only noticed it after
trying to see how best to present all the pending work to x86 maintainers. Could
you please send a fixup with this addressed? After that I am planning to propose its
inclusion among all the other pending resctrl fixes followed by the SNC work. The SNC
work will need a rebase starting with this snippet, unless you see an easier way forward?

Reinette