linux-kernel - Re: [PATCH] drivers/firmware: const-ify DMI API and internals

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Date:	Sat, 1 Sep 2007 18:33:08 +0200
From:	Andi Kleen <ak@...e.de>
To:	Jeff Garzik <jeff@...zik.org>
Cc:	LKML <linux-kernel@...r.kernel.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Greg KH <greg@...ah.com>, len.brown@...el.com,
	linux-ide@...r.kernel.org, dz@...ian.org, minyard@....org,
	j.w.r.degoede@....nl, lm-sensors@...sensors.org, rlove@...ve.org,
	bzolnier@...il.com, dmitry.torokhov@...il.com,
	mzxreary@...inter.de, stelian@...ies.net, ibm-acpi@....eng.br,
	ambx1@....rr.com, gimli@...k-green.com
Subject: Re: [PATCH] drivers/firmware: const-ify DMI API and internals


>     And if we're really lucky, this might enable some additional
>     optimizations on the part of the compiler.

Only if the kernel was compiled C++. C compilers generally ignore constness
for optimization purposes because it can be so easily casted away.

-Andi
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