Re: Modular type GENERIC?
- From: Alexander Leidinger <Alexander@xxxxxxxxxxxxx>
- Date: Mon, 25 Feb 2008 14:38:08 +0100
Quoting Adrian Chadd <adrian@xxxxxxxxxxx> (from Sun, 24 Feb 2008 19:26:04 +0900):
G'day,
I was just wondering why we're not shipping a GENERIC type
configuration that simply loads the modules at startup, rather than a
statically linked kernel. I thought that was a large part of the push
for the modular framework in years past.
Using modules needs more space than having all in the kernel (or generating one big "super-module" which contains the code from all modules). There's some kind of space overhead for each module. When module support was added, space on the install media was a critical resource. Today this could be revisited (at least for the kernel which will be installed on the destination medium).
As a quick experiment, I trimmed all the modular devices out of
RELENG_7 GENERIC into a "BASE" configuration file and filled
/boot/loader.conf with modules relevant to my system. Everything
booted just fine.
How feasible do people think it would be to ship a "GENERIC"
configuration which simply includes all the devices in a default
module list, and users can select/deselect modules they wish to load?
I'm running a mini kernel since years, and everything I need is added as a module (if possible). So I would probably be one of the consumers of such a config.
Here's the kernel and loader configuration files I'm using just on my
system. I think acpi_load is a bit extraneous as acpi is included in
the amd64 DEFAULTS.
acpi is also loaded automatically on i386 (or not, if specified in the loader, so it should not be added in the config)
http://people.freebsd.org/~adrian/BASE.txt
http://people.freebsd.org/~adrian/loader.conf
I haven't looked at this.
Bye,
Alexander.
--
Some men are so macho they'll get you pregnant just to kill a rabbit.
-- Maureen Murphy
http://www.Leidinger.net Alexander @ Leidinger.net: PGP ID = B0063FE7
http://www.FreeBSD.org netchild @ FreeBSD.org : PGP ID = 72077137
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