linux-kernel - Re: [PATCH 1/2] kbuild: Support split debug info v3

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Message-ID: <20140720211901.GQ5803@tassilo.jf.intel.com>
Date:	Sun, 20 Jul 2014 14:19:01 -0700
From:	Andi Kleen <ak@...ux.intel.com>
To:	Sam Ravnborg <sam@...nborg.org>
Cc:	Andi Kleen <andi@...stfloor.org>, linux-kbuild@...r.kernel.org,
	linux-kernel@...r.kernel.org, Dirk Gouders <dirk@...ders.net>,
	mmarek@...e.cz
Subject: Re: [PATCH 1/2] kbuild: Support split debug info v3

> Why are as only called with -Wa,-gdwarf-2 in the non-split case?
> Is this a bug or intentional?
> If it is intentional then it is not explained.

Probably was a merging mistake. Will fix.

> > +	help
> > +	  Generate debug info into separate .dwo files. This can be
> > +	  faster for building than including the debug information directly
> Here the "faster" part is promoted.
> But in your cover letter you actually highlight the "smaller" case
> as more significant.
> Maybe include info on both positive items.

I currently don't see it significantly faster in my setup, will
mention size. It may be in others though. Feel free to test.

-Andi
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