[yocto] [meta-raspberrypi] linux kernel rt

[Mirza Krak]

2017-12-14 9:41 GMT+01:00 Andreas Müller <schnitzeltony at gmail.com>:
> On Thu, Dec 14, 2017 at 2:58 AM, Sherif Omran <sherifomran2000 at gmail.com>
> wrote:
>>
>> hey guys,
>>
>> any body tried the real time kernel? I get an error, it is snot in the
>> compatibility list.
>> can we skip it?
>>
>> thanks
>>
>> --
>
> Good news: I use RT kernel only together with VC4 graphics and have lots of
> fun on PI2/3.
> Bad news: As far as I know it is not in meta-raspberrypi but in my fork [1].
> There were attempts to land the RT-patches in meta-raspberrypi but that was
> denied for huge patch size :(

If the patch size was the only problem one can pull it by doing the
following in the recipe:

SRC_URI += " \
    https://cdn.kernel.org/pub/linux/kernel/projects/rt/4.9/patch-4.9.65-rt56.patch.gz;name=rt-patch
\
"

SRC_URI[rt-patch.md5sum] = "9caa7b541d8c84c2d5c5f58985982e95"
SRC_URI[rt-patch.sha256sum] =
"47dfb518c78d8cbaafd4ab9130eb26fe0170be9189b580ab26209ef679309539"

Note that above sums are "random" and not the for the actually file
but are there for reference.

That way you do not need to keep a copy of it in meta-raspberrypi.

-- 
Med Vänliga Hälsningar / Best Regards

Mirza Krak