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From: Nigel Cunningham <ncunningham@linuxmail.org>
To: Paul Mackerras <paulus@samba.org>
Cc: Alon Bar-Lev <alon.barlev@gmail.com>, Andi Kleen <ak@suse.de>,
	Matt Domsch <Matt_Domsch@dell.com>, Andrew Morton <akpm@osdl.org>,
	linux-kernel@vger.kernel.org, johninsd@san.rr.com,
	davej@codemonkey.org.uk, Riley@williams.name,
	trini@kernel.crashing.org, davem@davemloft.net, ecd@brainaid.de,
	jj@sunsite.ms.mff.cuni.cz, anton@samba.org, wli@holomorphy.com,
	lethal@linux-sh.org, rc@rc0.org.uk, spyro@f2s.com,
	rth@twiddle.net, avr32@atmel.com, hskinnemoen@atmel.com,
	starvik@axis.com, ralf@linux-mips.org, matthew@wil.cx,
	grundler@parisc-linux.org, geert@linux-m68k.org,
	zippel@linux-m68k.org, schwidefsky@de.ibm.com,
	heiko.carstens@de.ibm.com, uclinux-v850@lsi.nec.co.jp,
	chris@zankel.net
Subject: Re: [PATCH 00/26] Dynamic kernel command-line
Date: Mon, 04 Sep 2006 12:50:20 +1000	[thread overview]
Message-ID: <1157338220.10336.147.camel@nigel.suspend2.net> (raw)
In-Reply-To: <17659.26177.846522.226410@cargo.ozlabs.ibm.com>

Hi.

On Mon, 2006-09-04 at 09:33 +1000, Paul Mackerras wrote:
> Alon Bar-Lev writes:
> 
> > Current implementation stores a static command-line
> > buffer allocated to COMMAND_LINE_SIZE size. Most
> > architectures stores two copies of this buffer, one
> > for future reference and one for parameter parsing.
> 
> Under what circumstances do we actually need a command line of more
> than 256 bytes?
> 
> It seems to me that if 256 bytes isn't enough, we should take a deep
> breath, step back, and think about whether there might be a better way
> to pass whatever information it is that's using up so much of the
> command line.

I agree. The current limit varies widely, most often being 256 or 512,
but sometimes also 896 (s390!) or 1024 (arm, arm26, parisc) or 4096
(uml). Would users and developers of those arches care to enlighten? Why
896?

Regards,

Nigel


-- 
VGER BF report: H 4.24346e-05

  reply	other threads:[~2006-09-04  2:50 UTC|newest]

Thread overview: 42+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2006-09-03 21:50 [PATCH 00/26] Dynamic kernel command-line Alon Bar-Lev
2006-09-03 21:52 ` [PATCH 01/26] Dynamic kernel command-line - common Alon Bar-Lev
2006-09-03 22:10   ` Matthew Wilcox
2006-09-03 22:12     ` Alon Bar-Lev
2006-09-05 23:52     ` Bill Davidsen
2006-09-03 21:52 ` [PATCH 02/26] Dynamic kernel command-line - alpha Alon Bar-Lev
2006-09-03 21:53 ` [PATCH 03/26] Dynamic kernel command-line - arm Alon Bar-Lev
2006-09-03 21:54 ` [PATCH 04/26] Dynamic kernel command-line - arm26 Alon Bar-Lev
2006-09-03 21:54 ` [PATCH 05/26] Dynamic kernel command-line - avr32 Alon Bar-Lev
2006-09-03 21:55 ` [PATCH 06/26] Dynamic kernel command-line - cris Alon Bar-Lev
2006-09-03 21:55 ` [PATCH 07/26] Dynamic kernel command-line - frv Alon Bar-Lev
2006-09-03 21:56 ` [PATCH 08/26] Dynamic kernel command-line - h8300 Alon Bar-Lev
2006-09-03 21:56 ` [PATCH 09/26] Dynamic kernel command-line - i386 Alon Bar-Lev
2006-09-03 21:56 ` [PATCH 10/26] Dynamic kernel command-line - ia64 Alon Bar-Lev
2006-09-03 21:57 ` [PATCH 11/26] Dynamic kernel command-line - m32r Alon Bar-Lev
2006-09-03 21:57 ` [PATCH 12/26] Dynamic kernel command-line - m68k Alon Bar-Lev
2006-09-03 21:58 ` [PATCH 13/26] Dynamic kernel command-line - m68knommu Alon Bar-Lev
2006-09-03 21:58 ` [PATCH 14/26] Dynamic kernel command-line - mips Alon Bar-Lev
2006-09-03 21:59 ` [PATCH 15/26] Dynamic kernel command-line - parisc Alon Bar-Lev
2006-09-03 21:59 ` [PATCH 16/26] Dynamic kernel command-line - powerpc Alon Bar-Lev
2006-09-03 22:00 ` [PATCH 17/26] Dynamic kernel command-line - ppc Alon Bar-Lev
2006-09-03 22:00 ` [PATCH 18/26] Dynamic kernel command-line - s390 Alon Bar-Lev
2006-09-03 22:01 ` [PATCH 19/26] Dynamic kernel command-line - sh Alon Bar-Lev
2006-09-03 22:01 ` [PATCH 20/26] Dynamic kernel command-line - sh64 Alon Bar-Lev
2006-09-03 22:01 ` [PATCH 21/26] Dynamic kernel command-line - sparc Alon Bar-Lev
2006-09-03 22:02 ` [PATCH 22/26] Dynamic kernel command-line - sparc64 Alon Bar-Lev
2006-09-03 22:02 ` [PATCH 23/26] Dynamic kernel command-line - um Alon Bar-Lev
2006-09-03 22:03 ` [PATCH 24/26] Dynamic kernel command-line - v850 Alon Bar-Lev
2006-09-03 22:03 ` [PATCH 25/26] Dynamic kernel command-line - x86_64 Alon Bar-Lev
2006-09-03 22:03 ` [PATCH 26/26] Dynamic kernel command-line - xtensa Alon Bar-Lev
2006-09-03 23:33 ` [PATCH 00/26] Dynamic kernel command-line Paul Mackerras
2006-09-04  2:50   ` Nigel Cunningham [this message]
2006-09-04  8:32     ` Martin Schwidefsky
2006-09-04  8:42       ` Alon Bar-Lev
2006-09-04  5:05   ` Alon Bar-Lev
2006-09-04  6:12   ` Andi Kleen
2006-09-04 17:09   ` Luca
2006-09-04  1:01 ` Josh Boyer
2006-09-04  5:07   ` Alon Bar-Lev
2006-09-04 19:59     ` Josh Boyer
2006-12-02 10:47 Alon Bar-Lev
2007-01-18 12:58 [patch " Bernhard Walle

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