Messages in this thread |  | | | Date | Thu, 30 Jun 2005 15:12:41 +0200 | | From | eric.valette@free ... | | Subject | Re: updating kernel to 2.6.13-rc1 from 2.6.12 + CONFIG_DEVFS_FS + empty /dev |
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Quoting Greg KH <greg@kroah.com>:
> On Wed, Jun 29, 2005 at 11:03:56PM +0200, Eric Valette wrote: > > For years now my /dev has been empty. When upgrading to 2.6.13-rc1 from > > 2.6.12, and updating my kernel config file via "make oldconfig" I got no > > visible warning about CONFIG_DEVFS_FS options being set (or at least did > > no see it). > > devfs has been marked OBSOLETE for a year now. It has also been > documented as going away. Because of this, you should not have been > supprised at all.
I knew it! I just the announce for 2.6.13-rc1 did not contain this fact and I did not realize booting this new kernel will fail on my machine which is bad for a stable serie.
> What are the speed differences that you see? I've tested it and on a > slow old laptop, with a lot of devices, udev only takes 2 seconds to > initialize the whole device tree. If you put it in initramfs, it will > take no additional time, as it will operate on all of the hotplug events > as they happen. Can't get faster than "nothing" :)
If I already have every device in /dev, I do not need udev and yes it is fast :-) This is exactly what I did to boot my system again. Just via devfs, I do not need an initial filesystem nor need anything in user space to boot a full system which I like.
-- eric
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