linux-kernel - Re: [RFC PATCH 0/3] Mark literal strings in __init / _

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Message-ID: <1403643440.29061.56.camel@joe-AO725>
Date:	Tue, 24 Jun 2014 13:57:20 -0700
From:	Joe Perches <joe@...ches.com>
To:	Mathias Krause <minipli@...glemail.com>
Cc:	Rasmus Villemoes <linux@...musvillemoes.dk>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Steven Rostedt <rostedt@...dmis.org>,
	"Rafael J. Wysocki" <rjw@...ysocki.net>,
	Thomas Gleixner <tglx@...utronix.de>,
	Ingo Molnar <mingo@...hat.com>,
	"H. Peter Anvin" <hpa@...or.com>
Subject: Re: [RFC PATCH 0/3] Mark literal strings in __init / __exit code

On Tue, 2014-06-24 at 22:41 +0200, Mathias Krause wrote:
> there is more to optimize
> if one is patient enough ;)

Ever thus.

> And all of those strings should be in the .rodata section, now. But
> why you're asking?

Because now they will be duplicated in .rodata
and the __init section no?

> Yes. My vanilla vmlinux build has quite a lot of copies of "off" in
> it. But I doubt any linker would merge those. Does LTO do so?

I would expect that duplicated strings in
separate sections would not be merged.


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