[SRU][G][H][I][UNSTABLE][PATCH 0/1] selftests/ftrace: fix event-no-pid on 1-core machine
Krzysztof Kozlowski
krzysztof.kozlowski at canonical.com
Mon Jul 5 15:55:54 UTC 2021
On 05/07/2021 17:47, Krzysztof Kozlowski wrote:
> BugLink: https://bugs.launchpad.net/bugs/1927749
>
> SRU Justification:
>
> [Impact]
>
> * Kernel selftests ftrace test fails on small machines which makes it
> difficult/impossible to spot real ftrace failure.
> * Only 1-core CPUs are affected.
> * When running event-no-pid test on small machines (e.g. cloud 1-core
> instance), other events might not happen.
>
> [Fix]
>
> * Schedule a simple sleep task to be sure that some other process events
> get recorded.
> * Fix accepted in mainline (v5.14-rc1 merge window).
Minor note:
We should get it also via stable updates, but the SRU allows to see
greener regression test matrices earlier.
Best regards,
Krzysztof
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