linux-kernel - Re: [PATCH v7 21/49] x86/resctrl: Move mba_mbps_default

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Message-ID: <d2732499-e0c9-48da-89d7-eca2d491fc2d@nvidia.com>
Date: Thu, 6 Mar 2025 13:33:42 -0800
From: Fenghua Yu <fenghuay@...dia.com>
To: James Morse <james.morse@....com>, x86@...nel.org,
 linux-kernel@...r.kernel.org
Cc: Reinette Chatre <reinette.chatre@...el.com>,
 Thomas Gleixner <tglx@...utronix.de>, Ingo Molnar <mingo@...hat.com>,
 Borislav Petkov <bp@...en8.de>, H Peter Anvin <hpa@...or.com>,
 Babu Moger <Babu.Moger@....com>, 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>
Subject: Re: [PATCH v7 21/49] x86/resctrl: Move mba_mbps_default_event init to
 filesystem code


On 2/28/25 11:58, James Morse wrote:
> mba_mbps_default_event is initialised base on whether mbm_local or
> mbm_total is supported. In the case of both, it is initialised to
> mbm_local. mba_mbps_default_event is initialised in core.c's
> get_rdt_mon_resources(), while all the readers are in rdtgroup.c.
>
> After this code is split into architecture specific and filesystem code,
> get_rdt_mon_resources() remains part of the architecture code, which
> would mean mba_mbps_default_event has to be exposed by the filesystem
> code.
>
> Move the initialisation to the filesystem's resctrl_mon_resource_init()
>
> Signed-off-by: James Morse <james.morse@....com>
> Reviewed-by: Reinette Chatre <reinette.chatre@...el.com>
Reviewed-by: Fenghua Yu <fenghuay@...dia.com>


Thanks.


-Fenghua