Re: yocto meta-intel preempt-rt

Monsees, Steven C (US)

I will check...

Would you have an example of a recipe that shows how to apply the rt path ?


-----Original Message-----
From: Leon Woestenberg <leon@...>
Sent: Tuesday, November 2, 2021 8:25 AM
To: Monsees, Steven C (US) <steven.monsees@...>
Cc: yocto@...
Subject: Re: [yocto] yocto meta-intel preempt-rt

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Hello Steve,

I have been running the PREEMPT_RT for Intel platforms for a few releases, I remember it fetched sources from a GIT branch for -rt (PREEMPT_RT). So it does not need to apply separate patches in that case.

Could you check if this is the case for you as well?



p.s. Slightly off-topic, I moved away from PREEMPT_RT in favor of task isolation mode, where we use one CPU core in isolated single task mode, for *much* lower latencies than PREEMPT_RT can provide.

Leon Woestenberg
T: +31 40 711 42 76
M: +31 6 472 30 372

Sidebranch Embedded Systems
Eindhoven, The Netherlands

On Tue, Nov 2, 2021 at 12:30 PM Monsees, Steven C (US) via <> wrote:

I have an Intel based platform, and was looking to implement preempt-rt on it to test.

For Intel, the meta-intel component recipe appears to supports
“linux-intel-rt”, and I can build my intel based platform with this
and it boots… My platform kernel is currently 4.19 based under the
meta-inteI component I do not see the rt patch/patches being applied…

Is meta-intel component recipe building the full preempt-rt support ?, or do I still need to apply the patch ?



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