linux-kernel - Re: [PATCH 26/33] arm_mpam: Add helpers to allocate monitors

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Message-ID: <c2fcf606-7b68-4e21-aba0-76cbc0174c3f@arm.com>
Date: Fri, 29 Aug 2025 16:47:53 +0100
From: Ben Horgan <ben.horgan@....com>
To: James Morse <james.morse@....com>, linux-kernel@...r.kernel.org,
 linux-arm-kernel@...ts.infradead.org, linux-acpi@...r.kernel.org,
 devicetree@...r.kernel.org
Cc: shameerali.kolothum.thodi@...wei.com,
 D Scott Phillips OS <scott@...amperecomputing.com>,
 carl@...amperecomputing.com, lcherian@...vell.com,
 bobo.shaobowang@...wei.com, tan.shaopeng@...itsu.com,
 baolin.wang@...ux.alibaba.com, Jamie Iles <quic_jiles@...cinc.com>,
 Xin Hao <xhao@...ux.alibaba.com>, peternewman@...gle.com,
 dfustini@...libre.com, amitsinght@...vell.com,
 David Hildenbrand <david@...hat.com>, Rex Nie <rex.nie@...uarmicro.com>,
 Dave Martin <dave.martin@....com>, Koba Ko <kobak@...dia.com>,
 Shanker Donthineni <sdonthineni@...dia.com>, fenghuay@...dia.com,
 baisheng.gao@...soc.com, Jonathan Cameron <jonathan.cameron@...wei.com>,
 Rob Herring <robh@...nel.org>, Rohit Mathew <rohit.mathew@....com>,
 Rafael Wysocki <rafael@...nel.org>, Len Brown <lenb@...nel.org>,
 Lorenzo Pieralisi <lpieralisi@...nel.org>, Hanjun Guo
 <guohanjun@...wei.com>, Sudeep Holla <sudeep.holla@....com>,
 Krzysztof Kozlowski <krzk+dt@...nel.org>, Conor Dooley
 <conor+dt@...nel.org>, Catalin Marinas <catalin.marinas@....com>,
 Will Deacon <will@...nel.org>,
 Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
 Danilo Krummrich <dakr@...nel.org>
Subject: Re: [PATCH 26/33] arm_mpam: Add helpers to allocate monitors

Hi James,

On 8/22/25 16:30, James Morse wrote:
> MPAM's MSC support a number of monitors, each of which supports
> bandwidth counters, or cache-storage-utilisation counters. To use
> a counter, a monitor needs to be configured. Add helpers to allocate
> and free CSU or MBWU monitors.
> 
> Signed-off-by: James Morse <james.morse@....com>
> ---
>  drivers/resctrl/mpam_devices.c  |  2 ++
>  drivers/resctrl/mpam_internal.h | 35 +++++++++++++++++++++++++++++++++
>  2 files changed, 37 insertions(+)

This looks good to me.

Reviewed-by: Ben Horgan <ben.horgan@....com>


Thanks,

Ben