linux-kernel - Re: [PATCH v6 11/11] Documentation: document adreno preemption

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Message-ID: <ZvtMB14Yx5m3TzFJ@archie.me>
Date: Tue, 1 Oct 2024 08:10:31 +0700
From: Bagas Sanjaya <bagasdotme@...il.com>
To: Antonino Maniscalco <antomani103@...il.com>,
	Rob Clark <robdclark@...il.com>, Sean Paul <sean@...rly.run>,
	Konrad Dybcio <konrad.dybcio@...aro.org>,
	Abhinav Kumar <quic_abhinavk@...cinc.com>,
	Dmitry Baryshkov <dmitry.baryshkov@...aro.org>,
	Marijn Suijten <marijn.suijten@...ainline.org>,
	David Airlie <airlied@...il.com>, Daniel Vetter <daniel@...ll.ch>,
	Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
	Maxime Ripard <mripard@...nel.org>,
	Thomas Zimmermann <tzimmermann@...e.de>,
	Jonathan Corbet <corbet@....net>
Cc: linux-arm-msm@...r.kernel.org, dri-devel@...ts.freedesktop.org,
	freedreno@...ts.freedesktop.org, linux-kernel@...r.kernel.org,
	linux-doc@...r.kernel.org
Subject: Re: [PATCH v6 11/11] Documentation: document adreno preemption

On Thu, Sep 26, 2024 at 11:16:53PM +0200, Antonino Maniscalco wrote:
> +.. SPDX-License-Identifier: GPL-2.0
> +
> +:orphan:

Why don't this be added to toctree in Documentation/gpu/index.rst?

> +
> +=============
> +MSM Preemtion
> +=============
s/Preemtion/Preemption/


> +This mechanism can be used by the kernel to switch between rings. Whenever a
> +submission occurs the kernel finds the highest priority ring which isn't empty
> +and preempts to it if said ring is not the one being currently executed. This is
> +also done whenever a submission completes to make sure execution resumes on a
> +lower priority ring when a higher priority ring is done.

Do you mean that the kernel finds highest priority ring possible that is not
empty? What if all these 4 rings are empty?

Confused...

-- 
An old man doll... just what I always wanted! - Clara

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