Re: devfs vs udev FAQ from the other side

[David Lang <david.lang@digitalinsight.com>]

On Wed, 14 Sep 2005, Robert Love wrote:

> >   Took an actual devfs system of mine and disabled devfs from the
> >   kernel, then enabled hotplug and sysfs for udev to run.  make clean
> >   and surprise surprise, kernel is much bigger. Enable netlink stuff and
> >   it's bigger still. udev is only smaller if like Greg you don't count
> >   its kernel components against it, even if they wouldn't otherwise need
> >   to be enabled. Difference is to the tune of 604164 on udev and 588466
> >   on devfs. Maybe not a lot in some people's books, but a huge
> >   difference from the claims of other people that devfs is actually
> >   bigger.
>
> What modern system, though, could survive without hotplug and sysfs and
> netlink?  You need to have those components, you want those features,
> anyhow.

most servers and embedded systems can survive just fine without hotplug 
(in fact hotplug is frequently the slowest part of the boot).

sysfs and netlink I would have to think about, I know I don't expliticitly 
use either very much, but I'd have to check to see what may use them that 
I don't think about.

David Lang

> So your comparison is unrealistic.
>
> Your user-space argument is better.  Is ndevfs not sufficient?
>
> 	Robert Love
>
>
> -
> 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/

--
There are two ways of constructing a software design. One way is to make it so simple that there are obviously no deficiencies. And the other way is to make it so complicated that there are no obvious deficiencies.
 -- C.A.R. Hoare
-
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/