-----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?

Regards,

Leon.

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.


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Leon Woestenberg
leon@...
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Sidebranch Embedded Systems
Eindhoven, The Netherlands
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On Tue, Nov 2, 2021 at 12:30 PM Monsees, Steven C (US) via lists.yoctoproject.org <steven.monsees=baesystems.com@...> 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 ?



Thanks,

Steve