linux-kernel - Re: [PATCH v3 2/9] i2c: stm32f7: perform most of irq job in threaded handler

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Message-ID: <ZYVoqkoKh0S6yArc@shikoro>
Date: Fri, 22 Dec 2023 11:44:58 +0100
From: Wolfram Sang <wsa@...nel.org>
To: Alain Volmat <alain.volmat@...s.st.com>
Cc: Andi Shyti <andi.shyti@...nel.org>, Rob Herring <robh+dt@...nel.org>,
	Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Maxime Coquelin <mcoquelin.stm32@...il.com>,
	Alexandre Torgue <alexandre.torgue@...s.st.com>,
	Pierre-Yves MORDRET <pierre-yves.mordret@...s.st.com>,
	Conor Dooley <conor@...nel.org>, linux-i2c@...r.kernel.org,
	devicetree@...r.kernel.org,
	linux-stm32@...md-mailman.stormreply.com,
	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v3 2/9] i2c: stm32f7: perform most of irq job in threaded
 handler

On Fri, Dec 15, 2023 at 06:06:06PM +0100, Alain Volmat wrote:
> The irq handling is currently split between the irq handler
> and the threaded irq handler.  Some of the handling (such as
> dma related stuffs) done within the irq handler might sleep or
> take some time leading to issues if the kernel is built with
> realtime constraints.  In order to fix that, perform an overall
> rework to perform most of the job within the threaded handler
> and only keep fifo access in the non threaded handler.
> 
> Signed-off-by: Alain Volmat <alain.volmat@...s.st.com>
> Reviewed-by: Andi Shyti <andi.shyti@...nel.org>

Applied to for-next, thanks!


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