linux-kernel - Re: [PATCH v8 13/25] x86/resctrl: Introduce mbm_cntr_map to track assignable counters at domain

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Message-ID: <12413305-d795-4ce0-aa10-fc0ca03463a4@intel.com>
Date: Tue, 15 Oct 2024 20:19:10 -0700
From: Reinette Chatre <reinette.chatre@...el.com>
To: Babu Moger <babu.moger@....com>, <corbet@....net>, <fenghua.yu@...el.com>,
	<tglx@...utronix.de>, <mingo@...hat.com>, <bp@...en8.de>,
	<dave.hansen@...ux.intel.com>
CC: <x86@...nel.org>, <hpa@...or.com>, <paulmck@...nel.org>,
	<rdunlap@...radead.org>, <tj@...nel.org>, <peterz@...radead.org>,
	<yanjiewtw@...il.com>, <kim.phillips@....com>, <lukas.bulwahn@...il.com>,
	<seanjc@...gle.com>, <jmattson@...gle.com>, <leitao@...ian.org>,
	<jpoimboe@...nel.org>, <rick.p.edgecombe@...el.com>,
	<kirill.shutemov@...ux.intel.com>, <jithu.joseph@...el.com>,
	<kai.huang@...el.com>, <kan.liang@...ux.intel.com>,
	<daniel.sneddon@...ux.intel.com>, <pbonzini@...hat.com>,
	<sandipan.das@....com>, <ilpo.jarvinen@...ux.intel.com>,
	<peternewman@...gle.com>, <maciej.wieczor-retman@...el.com>,
	<linux-doc@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
	<eranian@...gle.com>, <james.morse@....com>
Subject: Re: [PATCH v8 13/25] x86/resctrl: Introduce mbm_cntr_map to track
 assignable counters at domain

Hi Babu,

On 10/9/24 10:39 AM, Babu Moger wrote:
> The MBM counters are allocated globally and assigned to an RMID, event pair
> in a resctrl group. It is tracked by mbm_cntr_free_map. Counters are
> assigned to the domain based on the user input. It needs to be tracked
> at domain level also.
> 
> Add the mbm_cntr_map bitmap in struct rdt_mon_domain to keep track of
> assignment at domain level. The global counter at mbm_cntr_free_map can
> be released when assignment at all the domains are cleared.
> 
> Signed-off-by: Babu Moger <babu.moger@....com>
> ---

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

Reinette