Re: [meta-raspberrypi] Is Preempt-rt still supported in master / latest releases?

["Carles Sole" <Carles.SoleMendi@de.bosch.com>]

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Hi Joel,

thanks for creating the issue.

Does the solution from Aleksandr work for you with raspberrypi4-64? The funny thing is for me it doesn't. As I mentioned above if I use his solution:

for MACHINE = "raspberrypi4-64" in local.conf, the .config file has following configs:
CONFIG_HAVE_PREEMPT_LAZY=y
CONFIG_PREEMPT_NONE=y
# CONFIG_PREEMPT_VOLUNTARY is not set
# CONFIG_PREEMPT is not set

If in the local.conf I replace the machine to MACHINE = "raspberrypi4" and I bitbake again, the .config file looks as follow:
CONFIG_HAVE_PREEMPT_LAZY=y
CONFIG_PREEMPT_LAZY=y
# CONFIG_PREEMPT_NONE is not set
# CONFIG_PREEMPT_VOLUNTARY is not set
# CONFIG_PREEMPT is not set
CONFIG_PREEMPT_RT=y
CONFIG_PREEMPT_COUNT=y
CONFIG_PREEMPTION=y

Meaning when the machine is set to raspberrypi4-64 and CONFIG_PREEMPT_RT is requested via the .cfg file in the file .config in work directory CONFIG_PREEMPT_NONE=y is getting set. Whereas with Machine raspberrypi4 it works as expected.

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