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[meta-raspberrypi] Is Preempt-rt still supported in master / latest releases?
#raspberrypi
Hello all, in case it helps someone else I found the dependency that was avoiding the RT patch to be applied to raspberrypi4-64 build. In bcm2711_defconfig for arm64 KVM is enabled. If KVM is disabled
Hello all, in case it helps someone else I found the dependency that was avoiding the RT patch to be applied to raspberrypi4-64 build. In bcm2711_defconfig for arm64 KVM is enabled. If KVM is disabled
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By
Carles Sole
· #59351
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[meta-raspberrypi] Is Preempt-rt still supported in master / latest releases?
#raspberrypi
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 MACHIN
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 MACHIN
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By
Carles Sole
· #59178
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[meta-raspberrypi] Is Preempt-rt still supported in master / latest releases?
#raspberrypi
I created an issue: https://github.com/agherzan/meta-raspberrypi/issues/1147 I would use Kuzemko Aleksandr's solution in bbappend until there is support in meta-raspberrypi.
I created an issue: https://github.com/agherzan/meta-raspberrypi/issues/1147 I would use Kuzemko Aleksandr's solution in bbappend until there is support in meta-raspberrypi.
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By
Joel Winarske
· #59160
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[meta-raspberrypi] Is Preempt-rt still supported in master / latest releases?
#raspberrypi
Hi, You should open issue with the upstream layer referencing this dialog: https://github.com/agherzan/meta-raspberrypi Joel On Thu, Feb 2, 2023, 11:18 PM Carles Sole via lists.yoctoproject.org <Carle
Hi, You should open issue with the upstream layer referencing this dialog: https://github.com/agherzan/meta-raspberrypi Joel On Thu, Feb 2, 2023, 11:18 PM Carles Sole via lists.yoctoproject.org <Carle
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By
Joel Winarske
· #59156
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[meta-raspberrypi] Is Preempt-rt still supported in master / latest releases?
#raspberrypi
Hello Joel, I do get the same, but my understanding is that the RT features are not enabled. I would expect to get: Linux raspberrypi4-64 5.15.34-v8 #1 SMP PREEMPT RT Tue Apr 19 19:21:26 UTC 2022 aarc
Hello Joel, I do get the same, but my understanding is that the RT features are not enabled. I would expect to get: Linux raspberrypi4-64 5.15.34-v8 #1 SMP PREEMPT RT Tue Apr 19 19:21:26 UTC 2022 aarc
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By
Carles Sole
· #59154
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[meta-raspberrypi] Is Preempt-rt still supported in master / latest releases?
#raspberrypi
In the case of kirkstone, this is what I get using `LINUX_KERNEL_TYPE = "preempt-rt"`: Linux raspberrypi4-64 5.15.34-v8 #1 SMP PREEMPT Tue Apr 19 19:21:26 UTC 2022 aarch64 aarch64 aarch64 GNU/Linux I'
In the case of kirkstone, this is what I get using `LINUX_KERNEL_TYPE = "preempt-rt"`: Linux raspberrypi4-64 5.15.34-v8 #1 SMP PREEMPT Tue Apr 19 19:21:26 UTC 2022 aarch64 aarch64 aarch64 GNU/Linux I'
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By
Joel Winarske
· #59152
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[meta-raspberrypi] Is Preempt-rt still supported in master / latest releases?
#raspberrypi
Hello Joel, thanks for your reply. I was not aware about this possibility. I have tried it and the preemptive rt kernel is built instead of standard ("linux-raspberrypi4_64-preempt-rt-build" is availa
Hello Joel, thanks for your reply. I was not aware about this possibility. I have tried it and the preemptive rt kernel is built instead of standard ("linux-raspberrypi4_64-preempt-rt-build" is availa
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By
Carles Sole
· #59145
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[meta-raspberrypi] Is Preempt-rt still supported in master / latest releases?
#raspberrypi
In kirkstone for example, you build preempt-rt variant by adding to local.conf: LINUX_KERNEL_TYPE = "preempt-rt" Does this no longer work?
In kirkstone for example, you build preempt-rt variant by adding to local.conf: LINUX_KERNEL_TYPE = "preempt-rt" Does this no longer work?
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By
Joel Winarske
· #59132
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[meta-raspberrypi] Is Preempt-rt still supported in master / latest releases?
#raspberrypi
Hello Lukasz, Aleksandr, I have not managed to build it for Rpi4-64. I followed the same approach as Aleksandr but it does not work for 64bit system. Doing exactly the same changes as Aleksandr if I b
Hello Lukasz, Aleksandr, I have not managed to build it for Rpi4-64. I followed the same approach as Aleksandr but it does not work for 64bit system. Doing exactly the same changes as Aleksandr if I b
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By
Carles Sole
· #59124
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[meta-raspberrypi] Is Preempt-rt still supported in master / latest releases?
#raspberrypi
My results: (32bit CM4 system) uname -a Linux b2qt-raspberrypi4 5.15.56-rt56-v7l #1 SMP PREEMPT_RT Fri Jul 22 13:23:23 UTC 2022 armv7l GNU/Linux I create linux-raspberrypi_5.15.bbappend and add SRC_UR
My results: (32bit CM4 system) uname -a Linux b2qt-raspberrypi4 5.15.56-rt56-v7l #1 SMP PREEMPT_RT Fri Jul 22 13:23:23 UTC 2022 armv7l GNU/Linux I create linux-raspberrypi_5.15.bbappend and add SRC_UR
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By
Kuzemko Aleksandr
· #59113
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[meta-raspberrypi] Is Preempt-rt still supported in master / latest releases?
#raspberrypi
Hi Carles Have you managed to go any further with your investigation regarding PREEMPT-RT on RPi4-64? Best regards, Lukasz Majewski -- DENX Software Engineering GmbH, Managing Director: Erika Unter HR
Hi Carles Have you managed to go any further with your investigation regarding PREEMPT-RT on RPi4-64? Best regards, Lukasz Majewski -- DENX Software Engineering GmbH, Managing Director: Erika Unter HR
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By
?ukasz Majewski
· #59105
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[meta-raspberrypi] Is Preempt-rt still supported in master / latest releases?
#raspberrypi
Hi Alex, Andrei, thanks for your reply. Based on your feedback I've tried the following: - I have downloaded the patch patch-5.15.86-rt56.patch from https://cdn.kernel.org/pub/linux/kernel/projects/rt
Hi Alex, Andrei, thanks for your reply. Based on your feedback I've tried the following: - I have downloaded the patch patch-5.15.86-rt56.patch from https://cdn.kernel.org/pub/linux/kernel/projects/rt
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By
Carles Sole
· #59057
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[meta-raspberrypi] Is Preempt-rt still supported in master / latest releases?
#raspberrypi
That would be correct. There is no support out of the box in the BSP layer and I am not aware of any layers providing that. If we find a person who wants to maintain a fork with the RT patches, I'm ha
That would be correct. There is no support out of the box in the BSP layer and I am not aware of any layers providing that. If we find a person who wants to maintain a fork with the RT patches, I'm ha
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By
Andrei Gherzan
· #59038
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[meta-raspberrypi] Is Preempt-rt still supported in master / latest releases?
#raspberrypi
meta-raspberrypi kernel comes from https://github.com/raspberrypi/linux and they stopped providing -rt options some time ago. Your options are to apply the -rt patchset to regular rpi kernel and enabl
meta-raspberrypi kernel comes from https://github.com/raspberrypi/linux and they stopped providing -rt options some time ago. Your options are to apply the -rt patchset to regular rpi kernel and enabl
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By
Alexander Kanavin
· #59029
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[meta-raspberrypi] Is Preempt-rt still supported in master / latest releases?
#raspberrypi
Hello all, I would like to understand if it is still possible to build an image for raspberrypi4-64 where the preempt-rt patch is applied to the kernel, e.g. by adding "PREFERRED_PROVIDER_virtual/kern
Hello all, I would like to understand if it is still possible to build an image for raspberrypi4-64 where the preempt-rt patch is applied to the kernel, e.g. by adding "PREFERRED_PROVIDER_virtual/kern
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By
Carles Sole
· #59028
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Apply Patching
#dunfell
#patch
#yocto
#raspberrypi
#linux
In this case I have no idea unfortunately. Does a regular kernel work? Alex
In this case I have no idea unfortunately. Does a regular kernel work? Alex
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By
Alexander Kanavin
· #58606
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Apply Patching
#dunfell
#patch
#yocto
#raspberrypi
#linux
Hello Alex, Sorry for late reply. Actually i madert- image by setting the preferred virtual/kernel type. PREFERRED_PROVIDER_virtual/kernel = "linux-raspberrypi-rt" and bake the recipe for following ta
Hello Alex, Sorry for late reply. Actually i madert- image by setting the preferred virtual/kernel type. PREFERRED_PROVIDER_virtual/kernel = "linux-raspberrypi-rt" and bake the recipe for following ta
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By
Nikita Gupta
· #58603
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Apply Patching
#dunfell
#patch
#yocto
#raspberrypi
#linux
It is not possible to say what went wrong if I cannot see the changes you did, what commands you type, and what is the outcome (vs. what you expect). So you need to publish your code somewhere, and de
It is not possible to say what went wrong if I cannot see the changes you did, what commands you type, and what is the outcome (vs. what you expect). So you need to publish your code somewhere, and de
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By
Alexander Kanavin
· #58455
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Apply Patching
#dunfell
#patch
#yocto
#raspberrypi
#linux
Hello Alex Because i had cloned linux-yocto for 4.12 as stated in (https://docs.yoctoproject.org/3.1.20/kernel-dev/kernel-dev-common.html#using-traditional-kernel-development-to-patch-the-kernel) but
Hello Alex Because i had cloned linux-yocto for 4.12 as stated in (https://docs.yoctoproject.org/3.1.20/kernel-dev/kernel-dev-common.html#using-traditional-kernel-development-to-patch-the-kernel) but
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By
Nikita Gupta
· #58454
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Apply Patching
#dunfell
#patch
#yocto
#raspberrypi
#linux
There is a version mismatch. If you want to patch the 5.4 kernel, why is the bbappend for 4.12? Alex
There is a version mismatch. If you want to patch the 5.4 kernel, why is the bbappend for 4.12? Alex
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By
Alexander Kanavin
· #58442
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