Re: CONFIG_REORDER Kconfig help strange sentence.

From: Andi Kleen
Date: Mon Mar 12 2007 - 19:56:32 EST


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
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/