On Fri, Sep 15, 2006 at 04:41:35PM -0700, Andrew Morton wrote:
> On Fri, 15 Sep 2006 15:47:52 -0700
> "Randy.Dunlap" <[email protected]> wrote:
>
> > On Fri, 15 Sep 2006 14:58:06 -0700 [email protected] wrote:
> >
> > >
> > > The patch titled
> > >
> > > allow /proc/config.gz to be built as a module
> > >
> > > has been added to the -mm tree. Its filename is
> > >
> > > allow-proc-configgz-to-be-built-as-a-module.patch
> > >
> > > See http://www.zip.com.au/~akpm/linux/patches/stuff/added-to-mm.txt to find
> > > out what to do about this
> > >
> > > ------------------------------------------------------
> > > Subject: allow /proc/config.gz to be built as a module
> > > From: Ross Biro <[email protected]>
> >
> > When/where was this patch submitted? I seem to have missed it
> > (or it was so long ago that I forgot about it).
>
> Ross wrote it today and I stole it.
>
> > > The driver for /proc/config.gz consumes rather a lot of memory and it is in
> > > fact possible to build it as a module.
> >
> > Can you try to quantify "rather a lot of memory"?
>
> I confused it with /proc/kallsyms. No, /proc/config.gz doesn't use much
> memory.
>
> > > In some ways this is a bit risky, because the .config which is used for
> > > compiling kernel/configs.c isn't necessarily the same as the .config which was
> > > used to build vmlinux.
> >
> > and that's why a module wasn't allowed.
> > It's not worth the risk IMO.
>
> I'd want to be hearing from distro people on that - I'd expect that the
> .config which is used to build configs.ko would not differ from that which
> is used to build vmlinux.
>...
If you are concerned about memory usage, and you are anyway building a
kernel package for a distribution, the reasonable solution is
place the .config in /boot/config-...
That's also what I know from the Debian kernel packages.
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
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