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From: Pavel Machek <pavel@ucw.cz>
To: Tom Zanussi <tom.zanussi@linux.intel.com>
Cc: josh@joshtriplett.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH 05/10] drivers/char: Support compiling out /dev/zero
Date: Wed, 28 Jan 2015 22:07:51 +0100	[thread overview]
Message-ID: <20150128210751.GA14006@amd> (raw)
In-Reply-To: <79846ac644fe9103ef9b7cb0ab69e6f196f27853.1422035184.git.tom.zanussi@linux.intel.com>

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@linux.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

  reply	other threads:[~2015-01-29  1:54 UTC|newest]

Thread overview: 19+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-01-23 18:37 [PATCH 00/10] tinification: Make memory-access char devices optional Tom Zanussi
2015-01-23 18:37 ` [PATCH 01/10] drivers/char: Support compiling out memory-access char devices Tom Zanussi
2015-01-23 18:37 ` [PATCH 02/10] drivers/char: Support compiling out /dev/mem Tom Zanussi
2015-01-23 18:37 ` [PATCH 03/10] drivers/char: Support compiling out /dev/port Tom Zanussi
2015-01-23 18:37 ` [PATCH 04/10] drivers/char: Support compiling out /dev/null Tom Zanussi
2015-01-23 18:37 ` [PATCH 05/10] drivers/char: Support compiling out /dev/zero Tom Zanussi
2015-01-28 21:07   ` Pavel Machek [this message]
2015-01-28 21:51     ` josh
2015-01-28 21:52       ` Pavel Machek
2015-01-28 23:20       ` Tom Zanussi
2015-01-31 23:08         ` Josh Triplett
2015-01-23 18:37 ` [PATCH 06/10] drivers/char: Support compiling out /dev/full Tom Zanussi
2015-01-23 18:37 ` [PATCH 07/10] drivers/char: Support compiling out /dev/random Tom Zanussi
2015-01-23 18:37 ` [PATCH 08/10] drivers/char: Support compiling out /dev/urandom Tom Zanussi
2015-01-23 18:37 ` [PATCH 09/10] drivers/char: Support compiling out /dev/kmsg Tom Zanussi
2015-01-23 18:37 ` [PATCH 10/10] drivers/char: Support compiling out the getrandom(2) syscall Tom Zanussi
2015-01-23 19:46   ` Theodore Ts'o
2015-01-23 20:04     ` Tom Zanussi
2015-01-23 22:30     ` josh

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