Hi,
the bcm2709_defconfig is an addition of the Raspberry Pi version of the
kernel, and is therefore not available in the upstream 4.4.15 commit you
checked out.
- Roland
On 08.02.2018 17:19, t-v.k@xxxxxxx wrote:
Thanks for the answers!
I'll need a DE in the end so I'll probably have to stick with the Raspberry Pi kernel.
Also, I would like to have a very recent kernel. I'm using a Raspberry Pi 3 Model B btw.
I think the issue with my patching was that I applied the patches for '4.14.15-rt13' while the 'rpi-4.14.y' branch from the Raspberry Pi kernel was a bit ahead (~4.14.17).
I went back in the commit history and found a commit that literally said 'Linux 4.14.15', then I changed my script to check that out instead of 'rpi-4.14.y'.
Now the patches apply successfully: https://gitlab.com/T-vK/rpi-rt-kernel/-/jobs/51703707
But as you can see there is another issue now. 'make bcm2709_defconfig' doesn't work:
Can't find default configuration "arch/arm/configs/bcm2709_defconfig"!
T-vK
On 07 February 2018 at 08:55, "Alexander Dahl" <ada@xxxxxxxxxxx> wrote:
Am Mittwoch, 7. Februar 2018, 00:02:52 CET schrieb t-v.k@xxxxxxx:
this is my first time on a mailing list. I'm not sure how this works.
You write to the list address, everyone also subscribed gets your mail,
including you. Some people will set you in Cc additionally.
I'm currently trying to automate the build of a Linux kernel with the RT
PREEMPT patch. The kernel that I'm trying to build is in this git
repository: https://github.com/raspberrypi/linux (branch rpi-4.14.y)
It's the official kernel for the Raspberry Pi.
Yes, and it has some patches on top of the upstream vanilla kernel, IIRC
around 200 the last time a looked at it.
But at the moment I am stuck. There are two problems. When I apply the
patch "patch-4.14.15-rt13.patch.gz", I get errors like:
Hunk #9 FAILED at 795.
...
1 out of 20 hunks FAILED -- saving rejects to file kernel/softirq.c.rej
...
and as a result of this it exits with code 1.
Here is the full build process output:
https://gitlab.com/T-vK/rpi-rt-kernel/-/jobs/51343435[https://gitlab.com/T-vK/rpi-rt-kernel/-/jobs/51343435]
When I just ignore it and continue I get to the point where I can run
"make zImage", which then fails with this:
This makes no sense, the patch must apply. You don't want to build anything
with a half applied patch.
Can anyone help me with these issues?
If you're on v4.14 anyway, I would recommend to run a vanilla kernel and put
the RT patch(es) on top. At least for a system without graphics, this should
work. (I had a RPi 1B running with vanilla v4.12 built with ptxdist and the
DistroKit BSP some time ago, v4.14 and v4.15 also run fine headless. Should
also work for RPi 2.)
HTH & Greets
Alex
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