Hi Felix, On Fri, 2016-01-15 at 11:45 +0100, Felix Fietkau wrote: > On 2016-01-15 00:12, Alexey Brodkin wrote: > > Given those patches are relevant to any ARC platform and even > > ISA version it makes perfect sense for patches to exist > > in one place instead of being duplicated for each new ARC-based ASIC. > > > > Note this is a prerequisite for upstreaming of ARC HS38 support in > > OpenWRT. > > > > Signed-off-by: Alexey Brodkin <abrodkin at synopsys.com> > > Cc: Felix Fietkau <nbd at openwrt.org> > > Cc: Jo-Philipp Wich <jow at openwrt.org> > > Cc: Jonas Gorski <jogo at openwrt.org> > > --- /dev/null > > +++ b/target/linux/generic/patches-4.4/331-arc-remove-dependency-on-DEVTMPFS.patch > > @@ -0,0 +1,36 @@ > > +From adfbf9e6cad93281cffceab078e7f6f2a8e094f9 Mon Sep 17 00:00:00 2001 > > +From: Alexey Brodkin <abrodkin at synopsys.com> > > +Date: Thu, 13 Aug 2015 01:56:02 +0300 > > +Subject: [PATCH 1/2] openwrt: arc - remove dependency on DEVTMPFS > > + > > +OpenWRT builds initramfs so that it doesn't require DEVTMPFS so dropping > > +this dependency. That helps to escape 2 separate kernel rebuilds with > > +and without initramfs. > > + > > +2 builds happen because OpenWRT first builds kernel and later modules. > > +When building entire kernel with simple "make" INITRAMFS sets to a real > > +value and so was triggering DEVTMPFS selection. Then when building only > > +modules with "make modules" command INITRAMFS is zeroed and so kernel > > +config was changing that lead to full kernel rebuild. > > + > > +Signed-off-by: Alexey Brodkin <abrodkin at synopsys.com> > > +--- > > + arch/arc/Kconfig | 2 -- > > + 1 file changed, 2 deletions(-) > > + > > +diff --git a/arch/arc/Kconfig b/arch/arc/Kconfig > > +index 6312f60..a95bab3 100644 > > +--- a/arch/arc/Kconfig > > ++++ b/arch/arc/Kconfig > > +@@ -12,8 +12,6 @@ config ARC > > + select BUILDTIME_EXTABLE_SORT > > + select COMMON_CLK > > + select CLONE_BACKWARDS > > +- # ARC Busybox based initramfs absolutely relies on DEVTMPFS for /dev > > +- select DEVTMPFS if !INITRAMFS_SOURCE="" > > + select GENERIC_ATOMIC64 > > + select GENERIC_CLOCKEVENTS > > + select GENERIC_FIND_FIRST_BIT > Could you please send this one upstream as well? Adding Vineet so he may comment if that change makes sense upstream. -Alexey
