lkml.org 
[lkml]   [2007]   [Sep]   [5]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH 0/3] build system: section garbage collection for vmlinux
On Wed, Sep 05, 2007 at 08:14:12PM +0100, Denys Vlasenko wrote:
> On Wednesday 05 September 2007 19:38, Daniel Walker wrote:
> > > > You version doesn't work with CONFIG_MODULES right?
> > >
> > > It works with CONFIG_MODULES.
> >
> > Really? Take a look at this version,
> >
> > http://lkml.org/lkml/2006/6/4/169
> >
> > Marcello had to implement a two pass build to add back symbol used in
> > modules which got removed from the main kernel.. You don't appear to do
> > that. Marcelo also claims better size reduction than you.
>
> This will discard EXPORT_SYMBOLs potentially used by
> out-of-tree modules.
>
> I also saw ~10% size reductions, but then at run-time test modules
> failed to load, they didn't find needed symbols.
>
> OTOH if I know that I am not going to be using such modules,
> then this can be done. Will require another CONFIG_xxx, though.

One point to keep in mind is that the space penalty of CONFIG_MODULES=y
is so big that CONFIG_MODULES=n is actually the most interesting case
for small systems that really need small kernels.

> vda

cu
Adrian

--

"Is there not promise of rain?" Ling Tan asked suddenly out
of the darkness. There had been need of rain for many days.
"Only a promise," Lao Er said.
Pearl S. Buck - Dragon Seed

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

\
 
 \ /
  Last update: 2007-09-05 21:35    [W:0.057 / U:0.172 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site