linux-kernel - RE: [PATCH v2 4/5] crypto: starfive: Add sm3 support for JH8100

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Date: Thu, 1 Feb 2024 05:59:01 +0000
From: JiaJie Ho <jiajie.ho@...rfivetech.com>
To: 'Herbert Xu' <herbert@...dor.apana.org.au>
CC: "'David S . Miller'" <davem@...emloft.net>, 'Rob Herring'
	<robh+dt@...nel.org>, 'Krzysztof Kozlowski'
	<krzysztof.kozlowski+dt@...aro.org>, 'Conor Dooley' <conor+dt@...nel.org>,
	"'linux-crypto@...r.kernel.org'" <linux-crypto@...r.kernel.org>,
	"'devicetree@...r.kernel.org'" <devicetree@...r.kernel.org>,
	"'linux-kernel@...r.kernel.org'" <linux-kernel@...r.kernel.org>
Subject: RE: [PATCH v2 4/5] crypto: starfive: Add sm3 support for JH8100

> On Thu, Feb 01, 2024 at 03:01:59AM +0000, JiaJie Ho wrote:
> >
> > I am using ifdef so unused codes wouldn't be compiled into the driver for
> unsupported variant.
> > Is the compiled driver size a concern for such cases?
> 
> The compiler should be eliminating unused code for you.  Is this not the case?

Currently, the object files defining new algo register/unregister functions weren't included in Makefile for unsupported device.
Compiler will still check for these definitions if IS_ENABLED is used instead of ifdef causing build errors.

Best regards,
Jia Jie