[PlanetCCRMA] How to create a 4.0 rt kernel package? (4.0.4-201.rt1.3.fc21.ccrma)

Fernando Lopez-Lezcano nando at ccrma.Stanford.EDU
Wed May 27 10:07:39 PDT 2015

On 05/15/2015 09:18 AM, Yury Bulka wrote:
> Thank you Fernando. Especially for the rtirq suggestion.

Just a few days ago 4.0.4-rt1 was released. I just released a first 
package of it on the Fedora 21 planetcore repository, lightly tested in 
my laptop and a desktop machine:

> $ uname -r

-- Fernando

PS: I'm currently downloading the Fedora 22 release to start making 
packages for it... it will take a few days to get there. Be patient.

> Fernando Lopez-Lezcano <nando at ccrma.Stanford.EDU> writes:
>> On 05/14/2015 02:22 AM, Yury Bulka wrote:
>>> Dear CCRMA,
>> Hi Yuri,
>>> I'm looking for advice on compiling a 4.0 rt kernel "the proper way",
>>> i.e. to have an -rt package that is similar to the official PlanetCCRMA
>>> packages. Perhaps just some pointers to information on how this is done
>>> for planet ccrma. I know how to compile kernels from the bare source
>>> (from kernel.org), but haven't yet compiled rt kernels into rpms.
>>> Do you have any scripts you use to build the rt kernels?
>> No, no scripts (other than my generic build system), just a modified
>> spec file derived from normal Fedora builds. That is available as part
>> of the srpm package in the Planet CCRMA "planetcore" repository.
>> The problem at the moment is that an rt patch has not been released
>> for 4.0+. The latest is for 3.18. So there is no way to create an rt
>> patched 4.0+ kernel without being one of the kernel gurus that deal
>> with the rt patch...
>>> The reason I have to do this is because I'm on a machine that has an
>>> Intel Broadwell graphics unit that only works properly with 4.0+
>>> kernels:( That's why I've upgraded to Fedora 22.
>>> Would be enormously grateful for any hints,
>> Sorry I can't be of more help... You will have to use the stock Fedora
>> kernels for now. Make sure you enable IRQ threading and set priorities
>> with rtirq as that can probably help with latency if that is critical
>> to your application.
>> Eagerly waiting for 4.x.x-rty...
>> Best,
>> -- Fernando

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