how to load modules the correct way (mkinitcpio)

rollps · 2006-09-27 15:47:53

Hi !

back to arch, from Ubuntu, because I wanted more speed...

I managed to get pretty much everything working, not without difficulties ...
btw the forum is great !!

still, I am a bit confused about the correct way to load modules at startup

here is my setup :

mkinitcpio with beyond kernel

in rc.conf :

MOD_AUTOLOAD="yes"
MODULES=(ipw3945 !r1000 evdev)
DAEMONS=(syslog-ng !hotplug !hwd !pcmcia ipw3945d network netfs crond alsa)

nothing in modprobe.conf

with that, am I using hwd (think no), hwdetect, udev ?

tried to switch off MOD_AUTOLOAD and putting all modules loaded in MODULES but without any success

once again, everything is working for the moment, it's more because I'm curious and I understand the lack of info about this as mkinitcpio is new (or maybe I didn't find the info :? )

Thanks

stonecrest · 2006-09-27 16:33:12

MOD_AUTOLOAD uses udev. You certainly can list all your modules in the MODULES=() array, although how much speed increase you'd get is.. questionable.

By the way, none of this really has anything to do with mkinitcpio

rollps · 2006-09-27 16:48:55

ok thank you for the quick reply

so i'm up and running with arch ! yeepie 8)

T-Dawg · 2006-09-27 16:59:01

actually I think MOD_AUTOLOAD uses hwdetect (written by a dev) which uses udev events to load hardware. do hwdetect --help to see all available options.

iBertus · 2006-09-27 17:51:09

Perhaps I've gotten this all wrong, but I thought that udev was used with MOD_AUTOLOAD and hwdetect only when building the mkinitcpio image.

phrakture · 2006-09-27 18:07:08

iBertus wrote:

Perhaps I've gotten this all wrong, but I thought that udev was used with MOD_AUTOLOAD and hwdetect only when building the mkinitcpio image.

Woah, you're mixing like 5 technologies here.

a) mkinitcpio - this runs at boot time. It is called "early userspace". mkinitcpio ONLY affects the stuff that happens before you get the colored text on bootup. As soon as you see the colored text, mkinitcpio is done.

b) hwdetect - this is no longer used. Everything is done via simple modalias dereferences.

c) udev - yes this is used in early-userspace, but that is unimportant. The udev you care about runs at boot time (normal userspace). It uses the settings in rc.conf to properly load your modules (i.e. blacklisted modules).

d) MOD_AUTOLOAD - allows udev to load modules. Without this, udev does very little.

e) MODULES array - loaded before udev begins loading modules. Use this to control load order if it is an issue.

phrakture · 2006-09-27 18:11:36

Penguin wrote:

actually I think MOD_AUTOLOAD uses hwdetect (written by a dev) which uses udev events to load hardware. do hwdetect --help to see all available options.

No, MOD_AUTOLOAD is used for the udev module loader - it's /lib/udev/load-modules.sh IIRC

iBertus · 2006-09-27 18:44:28

Wow, I never realized exactly how all of this stuff worked. It's just always 'just worked' here so it's never been an issue.

phrakture · 2006-09-27 19:04:58

rollps wrote:

once again, everything is working for the moment, it's more because I'm curious and I understand the lack of info about this as mkinitcpio is new (or maybe I didn't find the info :? )

I hope it's not really lacking, this document is HUGE (thanks mostly to brain0):
http://wiki.archlinux.org/index.php/Mkinitcpio

Arch Linux

#1 2006-09-27 15:47:53

how to load modules the correct way (mkinitcpio)

#2 2006-09-27 16:33:12

Re: how to load modules the correct way (mkinitcpio)

#3 2006-09-27 16:48:55

Re: how to load modules the correct way (mkinitcpio)

#4 2006-09-27 16:59:01

Re: how to load modules the correct way (mkinitcpio)

#5 2006-09-27 17:51:09

Re: how to load modules the correct way (mkinitcpio)

#6 2006-09-27 18:07:08

Re: how to load modules the correct way (mkinitcpio)

#7 2006-09-27 18:11:36

Re: how to load modules the correct way (mkinitcpio)

#8 2006-09-27 18:44:28

Re: how to load modules the correct way (mkinitcpio)

#9 2006-09-27 19:04:58

Re: how to load modules the correct way (mkinitcpio)

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