Bug 13463 - test linux-yocto-rt kernels too
Summary: test linux-yocto-rt kernels too
Status: RESOLVED FIXED
Alias: None
Product: AutoBuilder
Classification: Infrastructure
Component: autobuilder (show other bugs)
Version: unspecified
Hardware: x86 Multiple
: Medium+ normal
Target Milestone: 4.1 M3
Assignee: Ross Burton
QA Contact:
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Depends on:
Blocks:
 
Reported: 2019-08-01 02:01 UTC by Anuj Mittal
Modified: 2022-08-26 14:59 UTC (History)
8 users (show)

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OS type for building Yocto: ---
Type of Regression: ---
Verified:
Documentation change: No (bug/feature does not impact docs)

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Description Anuj Mittal 2019-08-01 02:01:34 UTC 
Could we build and boot test linux-yocto-rt kernel as part of a buildset on autobuilder too if we aren't doing that already?

The linux-yocto-rt 4.19 kernel version on warrior is currently broken and since it isn't tested, it wasn't detected while releasing 2.7.1.
Comment 1 Anuj Mittal 2019-08-01 02:05:34 UTC 
(In reply to comment #0)
> The linux-yocto-rt 4.19 kernel version on warrior is currently broken and
> since it isn't tested, it wasn't detected while releasing 2.7.1.

Sorry, actually I am not sure if it was broken at the time of release. It looks like the timelines overlap.
Comment 2 Randy MacLeod 2019-08-01 14:42:23 UTC 
Bruce which rt kernels do we support on which hardware?
Comment 3 Bruce Ashfield 2019-08-02 01:59:12 UTC 
(In reply to comment #1)
> (In reply to comment #0)
> > The linux-yocto-rt 4.19 kernel version on warrior is currently broken and
> > since it isn't tested, it wasn't detected while releasing 2.7.1.
> 
> Sorry, actually I am not sure if it was broken at the time of release. It
> looks like the timelines overlap.

Correct. There was a brief window where it was broken, but I had corrected it pretty quickly (before sending SRCREVs).
Comment 4 Bruce Ashfield 2019-08-02 02:03:57 UTC 
(In reply to comment #2)
> Bruce which rt kernels do we support on which hardware?

All of the 64 bit architectures are supported with -rt. There's no specific h/w support in core, it is tested on the qemu machines only.

h/w enablement isn't something we do in core, since the specifics of the peripherals, interrupt controllers, etc, is too much overhead to carry.

Obviously only the kernels with an upstream -rt are supported, which is currently 4.19 and 5.0 in master. Which will become 4.19 and 5.2 once the new version updates are in master.

As of the 5.3 kernel more of -rt is in the mainline kernel, so it will be a configuration build and boot, versus a patched branch, but anything we setup for this will hold once things are mainline.
Comment 5 akuster 2020-05-28 08:01:17 UTC 
Would a poky-rt.conf help here so that we could add this to the AB like poky-tiny.conf is?
Comment 6 akuster 2020-06-04 08:00:00 UTC 
add new config to x86_64 and arm64 qemu steps.
Comment 7 Denys Dmytriyenko 2022-07-19 16:42:26 UTC 
In light of recent RT breakage that got slipped through testing into Dunfell LTS:
https://lists.openembedded.org/g/openembedded-core/message/168248
Comment 8 Ross Burton 2022-07-20 11:27:38 UTC 
Patches on the list to do a build with a -rt kernel in qa-extras2, and check that the kernel is actually -rt in testimage.
Comment 9 Ross Burton 2022-08-26 14:59:50 UTC 
Done in y-a-h 2b01de08c28520e13496c29971a588f44b608ad1.