linux-kernel - Re: [PATCH 8/9] accel/rocket: Add job submission IOCTL

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Message-ID: <50b75b24-afbd-46cf-af4d-01e6ea4832dc@web.de>
Date: Wed, 11 Sep 2024 13:27:30 +0200
From: Markus Elfring <Markus.Elfring@....de>
To: Tomeu Vizoso <tomeu@...euvizoso.net>, linux-media@...r.kernel.org,
 devicetree@...r.kernel.org, dri-devel@...ts.freedesktop.org,
 iommu@...ts.linux.dev, linaro-mm-sig@...ts.linaro.org,
 linux-arm-kernel@...ts.infradead.org, linux-rockchip@...ts.infradead.org,
 Christian König <christian.koenig@....com>,
 Conor Dooley <conor+dt@...nel.org>, Daniel Vetter <daniel@...ll.ch>,
 David Airlie <airlied@...il.com>, Heiko Stübner
 <heiko@...ech.de>, Jörg Rödel <joro@...tes.org>,
 Krzysztof Kozlowski <krzk+dt@...nel.org>,
 Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
 Maxime Ripard <mripard@...nel.org>, Oded Gabbay <ogabbay@...nel.org>,
 Philipp Zabel <p.zabel@...gutronix.de>, Rob Herring <robh@...nel.org>,
 Robin Murphy <robin.murphy@....com>, Sumit Semwal <sumit.semwal@...aro.org>,
 Thomas Zimmermann <tzimmermann@...e.de>, Will Deacon <will@...nel.org>
Cc: LKML <linux-kernel@...r.kernel.org>,
 Tomeu Vizoso <tomeu.vizoso@...euvizoso.net>
Subject: Re: [PATCH 8/9] accel/rocket: Add job submission IOCTL

…
> +++ b/drivers/accel/rocket/rocket_job.c
> @@ -0,0 +1,708 @@
…
> +static int rocket_job_push(struct rocket_job *job)
> +{
…
> +	mutex_lock(&rdev->sched_lock);
> +	drm_sched_job_arm(&job->base);
…
> +	drm_sched_entity_push_job(&job->base);
> +
> +	mutex_unlock(&rdev->sched_lock);
…

Under which circumstances would you become interested to apply a statement
like “guard(mutex)(&rdev->sched_lock);”?
https://elixir.bootlin.com/linux/v6.11-rc7/source/include/linux/mutex.h#L196

Regards,
Markus