linux-kernel - Re: [PATCH] thermal: Constify struct thermal_zone_device

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Message-ID: <aHZXAw08359qCBz2@mai.linaro.org>
Date: Tue, 15 Jul 2025 15:26:27 +0200
From: Daniel Lezcano <daniel.lezcano@...aro.org>
To: Christophe JAILLET <christophe.jaillet@...adoo.fr>
Cc: Miquel Raynal <miquel.raynal@...tlin.com>,
	"Rafael J. Wysocki" <rafael@...nel.org>,
	Zhang Rui <rui.zhang@...el.com>, Lukasz Luba <lukasz.luba@....com>,
	Support Opensource <support.opensource@...semi.com>,
	Shawn Guo <shawnguo@...nel.org>,
	Sascha Hauer <s.hauer@...gutronix.de>,
	Pengutronix Kernel Team <kernel@...gutronix.de>,
	Fabio Estevam <festevam@...il.com>,
	Niklas Söderlund <niklas.soderlund@...natech.se>,
	Geert Uytterhoeven <geert+renesas@...der.be>,
	Magnus Damm <magnus.damm@...il.com>,
	Matthias Brugger <matthias.bgg@...il.com>,
	AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>,
	linux-kernel@...r.kernel.org, kernel-janitors@...r.kernel.org,
	linux-pm@...r.kernel.org, imx@...ts.linux.dev,
	linux-arm-kernel@...ts.infradead.org,
	linux-renesas-soc@...r.kernel.org,
	linux-mediatek@...ts.infradead.org
Subject: Re: [PATCH] thermal: Constify struct thermal_zone_device_ops

On Sun, May 25, 2025 at 11:40:04AM +0200, Christophe JAILLET wrote:
> 'struct thermal_zone_device_ops' are not modified in these drivers.
> 
> Constifying these structures moves some data to a read-only section, so
> increases overall security, especially when the structure holds some
> function pointers.
> 
> On a x86_64, with allmodconfig, as an example:
> Before:
> ======
>    text	   data	    bss	    dec	    hex	filename
>   28116	   5168	    128	  33412	   8284	drivers/thermal/armada_thermal.o
> 
> After:
> =====
>    text	   data	    bss	    dec	    hex	filename
>   28244	   5040	    128	  33412	   8284	drivers/thermal/armada_thermal.o
> 
> Signed-off-by: Christophe JAILLET <christophe.jaillet@...adoo.fr>
> ---
> Compile tested only
> ---

Applied, thanks

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