linux-kernel - Re: [GIT PULL] x86 LTO changes for v3.15

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Message-ID: <1396427366.18431.23.camel@x220>
Date:	Wed, 02 Apr 2014 10:29:26 +0200
From:	Paul Bolle <pebolle@...cali.nl>
To:	Andi Kleen <ak@...ux.intel.com>
Cc:	"H. Peter Anvin" <hpa@...ux.intel.com>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	gleb@...hat.com, hpa@...or.com, hubicka@....cz,
	linux-kernel@...r.kernel.org, mingo@...nel.org,
	pbonzini@...hat.com, perex@...ex.cz, peterz@...radead.org,
	rostedt@...dmis.org, rusty@...tcorp.com.au, tglx@...utronix.de
Subject: Re: [GIT PULL] x86 LTO changes for v3.15

On Tue, 2014-04-01 at 16:17 -0700, Andi Kleen wrote:
> On Tue, Apr 01, 2014 at 10:49:51PM +0200, Paul Bolle wrote:
> > I can't find a Kconfig symbol LTO nor a preprocessor define for
> > CONFIG_LTO. (I only checked master of Linus's tree and linux-next.)
> 
> The patch for LTO is not merged yet, this is all preparation.
> 
> > 
> > Why is this check for CONFIG_LTO needed?
> 
> The comment just below describes the problem.
> 
> Or is your question what LTO is? Link Time Optimization

I asked the wrong question, as I wanted to ask whether a Kconfig symbol
LTO is perhaps pending somewhere. You basically answered that question
already.

Thanks,


Paul Bolle

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