From: Andi Kleen <ak@muc.de>
To: Rusty Russell <rusty@rustcorp.com.au>
Cc: lkml - Kernel Mailing List <linux-kernel@vger.kernel.org>,
arjan@infradead.org
Subject: Re: CONFIG_REORDER Kconfig help strange sentence.
Date: 13 Mar 2007 00:56:05 +0100
Date: Tue, 13 Mar 2007 00:56:05 +0100 [thread overview]
Message-ID: <20070312235605.GA14444@muc.de> (raw)
In-Reply-To: <1173741484.10618.25.camel@localhost.localdomain>
On Tue, Mar 13, 2007 at 10:18:03AM +1100, Rusty Russell wrote:
> OK, this confused me:
>
> Function reordering (REORDER) [N/y/?] (NEW) ?
>
> This option enables the toolchain to reorder functions for a more
> optimal TLB usage. If you have pretty much any version of binutils,
> this can increase your kernel build time by roughly one minute.
>
> "If you have pretty much any version of binutils"? Huh?
>
> You mean "This will slow your kernel build by about a minute"?
Yes. Lots of sections seem to trigger some quadratic behaviour in ld.
It might be fixed in some unreleased CVS version though (not 100% sure)
-Andi
next prev parent reply other threads:[~2007-03-12 23:56 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-03-12 23:18 CONFIG_REORDER Kconfig help strange sentence Rusty Russell
2007-03-12 23:56 ` Andi Kleen [this message]
2007-03-13 6:37 ` Rusty Russell
2007-03-16 1:34 ` Randy Dunlap
2007-03-17 8:54 ` Rusty Russell
2007-03-18 4:32 ` Randy Dunlap
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