[PATCH 2/2] arc770: move arc patches to taregt/linux/generic

[Peter Korsgaard]

>>>>> "Felix" == Felix Fietkau <nbd at openwrt.org> writes:

 >>> OpenWrt works just fine without DEVTMPFS - doesn't matter if initramfs
 >>> is enabled or not.
 >> 
 >> The discussion is about adding a patch to up upstream ARC kernel, not specific to
 >> openwrt.
 > Right. I belive that the upstream kernel should not arbitrarily force
 > DEVTMPFS support for some architectures, as long as there are user space
 > implementations (such as OpenWrt) that can do without it.

Agreed, only the options absolutely needed should be forced on.

 >> BTW if openwrt builds for initramfs, it has to enable DEVTMPFS under the hood.
 >> Perhaps there are dependencies in openwrt build system which take care of that
 >> already - o/w it just won't work (assuming dynamic dev nodes).
 > Incorrect. OpenWrt does not use DEVTMPFS, it does not even get compiled
 > into the image. We would like to keep it that way.
 > Our user space takes care of creating all required device nodes very
 > early during boot.

Out of interest, why is that? Devtmpfs got added 7 years ago (2.6.32) -
And is easy to backport if really needed, is easier and more flexible
than a bunch of static mknods, and probably smaller as well.

We changed to devtmpfs by default in Buildroot quite some time ago, and
I'm pretty happy with it.

-- 
Venlig hilsen,
Peter Korsgaard