linux-kernel - Re: [PATCH 05/10] drivers/char: Support compiling out /dev/zero

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Date:	Wed, 28 Jan 2015 22:07:51 +0100
From:	Pavel Machek <pavel@....cz>
To:	Tom Zanussi <tom.zanussi@...ux.intel.com>
Cc:	josh@...htriplett.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 05/10] drivers/char: Support compiling out /dev/zero

On Fri 2015-01-23 12:37:11, Tom Zanussi wrote:
> Some embedded systems with tightly controlled userspace have no use
> for /dev/zero, and could benefit from the size savings gained by
> omitting it.  Add a new EMBEDDED config option to disable it.
> 
> bloat-o-meter (based on tinyconfig):
> 
> add/remove: 0/3 grow/shrink: 0/1 up/down: 0/-391 (-391)
> function                                     old     new   delta
> chr_dev_init                                 162     147     -15
> mmap_zero                                     16       -     -16
> zero_fops                                    116       -    -116
> zero_bdi                                     244       -    -244
> 
> Signed-off-by: Tom Zanussi <tom.zanussi@...ux.intel.com>

I'm not sure that 400 bytes are worth additional Kconfig noise. .. and
pretty much everyone needs /dev/zero...

								Pavel
								
-- 
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
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