On Wed, Dec 16, 2020 at 09:39:31AM +0100, Stephane ANCELOT wrote:
>
> Le 16/12/2020 à 09:36, Lukas Bulwahn a écrit :
> > On Wed, Dec 16, 2020 at 9:31 AM Stephane ANCELOT
> > <sancelot@xxxxxxxxxxxxxxx> wrote:
> > > Hi,
> > >
> > > I have downloaded latest LTS kernel 5.4 .
> > >
> > > For unknown reasons, I dont understand why I can't enable full rt preempt,
> > >
> > Well, PREEMPT_RT is not available on v5.4 without the PREEMPT_RT patch set.
> Sorry, I thought it was now part of the mainstream kernel. I have not
> understand :-\
The merge into upstream is an ongoing effort and is not complete yet.
Here is the announce for the latest available PREEMPT_RT patch for v5.4
(v5.4.82-rt45):
https://www.spinics.net/lists/linux-rt-users/msg23022.html
In the message you will find instructions to get the code.
Best regards,
Luis
> > You can check that there is no architecture support for PREEMPT_RT on
> > the stable kernel. Just look at the Kconfig files defining those
> > config symbols.
> >
> > Lukas
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