linux-kernel - Re: [PATCH v7 16/31] x86,fs/resctrl: Add and initialize rdt

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Message-ID: <bc7340be-9728-4938-9196-8bc48d56c068@intel.com>
Date: Fri, 25 Jul 2025 16:36:24 -0700
From: Reinette Chatre <reinette.chatre@...el.com>
To: Tony Luck <tony.luck@...el.com>, Fenghua Yu <fenghuay@...dia.com>, "Maciej
 Wieczor-Retman" <maciej.wieczor-retman@...el.com>, Peter Newman
	<peternewman@...gle.com>, James Morse <james.morse@....com>, Babu Moger
	<babu.moger@....com>, Drew Fustini <dfustini@...libre.com>, Dave Martin
	<Dave.Martin@....com>, Chen Yu <yu.c.chen@...el.com>
CC: <x86@...nel.org>, <linux-kernel@...r.kernel.org>,
	<patches@...ts.linux.dev>
Subject: Re: [PATCH v7 16/31] x86,fs/resctrl: Add and initialize rdt_resource
 for package scope core monitor

Hi Tony,

In subject, should "core" be dropped?

On 7/11/25 4:53 PM, Tony Luck wrote:
> Add a new PERF_PKG resource and introduce package level scope for
> monitoring these events so that CPU hotplug notifiers can build domains

It is not obvious what "these events" refer to here.

> at the package granularity.
> 
> Use the physical package ID available via topology_physical_package_id()
> to identify the monitoring domains with package level scope.
> 
> This enables user space to use
>  /sys/devices/system/cpu/cpuX/topology/physical_package_id
> to identify the monitoring domain a CPU is associated with.

Above two paragraphs can be merged?

> 
> Signed-off-by: Tony Luck <tony.luck@...el.com>
> ---

Patch looks good.

Reinette