linux-kernel - Re: ARM defconfig files

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Date:	Wed, 14 Jul 2010 10:37:07 -0700
From:	Tony Luck <tony.luck@...il.com>
To:	Uwe Kleine-König 
	<u.kleine-koenig@...gutronix.de>
Cc:	David Brown <davidb@...eaurora.org>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Russell King - ARM Linux <linux@....linux.org.uk>,
	Daniel Walker <dwalker@...eaurora.org>,
	Kevin Hilman <khilman@...prootsystems.com>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	linux-arm-msm@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org,
	Grant Likely <grant.likely@...retlab.ca>,
	Eric Miao <eric.miao@...onical.com>,
	linux-omap@...r.kernel.org, Nicolas Pitre <nico@...xnic.net>
Subject: Re: ARM defconfig files

2010/7/14 Uwe Kleine-König <u.kleine-koenig@...gutronix.de>:
> Note that no kernel is built at all, only the config is regenerated once
> for each line.

You could special case blank lines and comments (other than ones
like "# CONFIG_FOO is not set" which do matter).  They account for
~15% of the lines in my .config files.  But it probably doesn't matter
all that much. I just ran reduce_defconfig in parallel on all the ia64
defconfig files (in separate build trees) and they were all done when
I looked back an hour or so later.  Nice tool!

-Tony
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