linux-kernel - Re: [PATCH v3 0/7] drm/panthor: Add performance counters with manual sampling mode

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Message-ID: <7ae5cc02-d969-41f3-b531-9efcf4cf93df@arm.com>
Date: Fri, 16 May 2025 15:05:41 +0100
From: Lukas Zapolskas <lukas.zapolskas@....com>
To: Adrián Larumbe <adrian.larumbe@...labora.com>
Cc: Boris Brezillon <boris.brezillon@...labora.com>,
 Steven Price <steven.price@....com>, Liviu Dudau <liviu.dudau@....com>,
 Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
 Maxime Ripard <mripard@...nel.org>, Thomas Zimmermann <tzimmermann@...e.de>,
 David Airlie <airlied@...il.com>, Simona Vetter <simona@...ll.ch>,
 dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v3 0/7] drm/panthor: Add performance counters with manual
 sampling mode

Hello Adrián,

Thank you for reaching out about the matter. Could you please clarify what you would like
me to elaborate on? I have responded to most, if not all, of the comments you raised in that 
review, including providing more information about the approach (please see [1] for more details 
on the uAPI apprach).

I am also in the process of publishing a Mesa MR corresponding to the v4 of the patch series,
which will be available. It includes additional fixes discussed in RFC v2, 
and I will provide a more detailed change log.

Kind regards,
Lukas Zapolskas

[1]: https://lore.kernel.org/dri-devel/55fb6aa6-89dc-404c-89fc-5c56d15d8c98@arm.com/

On 07/05/2025 20:54, Adrián Larumbe wrote:
> I wanted to review this series for quite some time but lately have found myself caught up in quite
> a few other things. I've had a look into it last week, but before I delve into it any further, I was
> wondering whether you could take some time to go over the questions and comments I left in the review
> for the previous patch series version.
> 
> That way I could know what changes you introduced in response to issues I raised, and which ones are
> due to a rethinking of the whole design.
> 
> I remember some of the questions I posed dealt with a genuine lack of understanding of the way
> performance counters in CSF GPUs operate, so if you could find some time to answer them or else
> point me to the right sections of the TRM I'd find the review of this latest revision a lot easier.
> 
> Kind Regards,
> Adrian Larumbe