6 cpufreq test cases failed on ARM Versatile Express TC2 Android.

[Botao]

On ARM Versatile Express TC2 board with Linaro Android image:

http://snapshots.linaro.org/android/~linaro-android/vexpress-linaro/268/

6 cpufreq test cases failed:

https://validation.linaro.org/dashboard/streams/private/team/linaro/android-daily/bundles/089fef857f59a0dab2ef559655d2f1535e786fb8/

https://validation.linaro.org/dashboard/streams/private/team/linaro/android-daily/bundles/089fef857f59a0dab2ef559655d2f1535e786fb8/906bb85e-ff87-48a0-9802-d9ed4ec149a6/

Detailed console output can be found here, or attachment of this bug:

https://validation.linaro.org/dashboard/attachment/708710/view

This started to happen since build #258, 2 March 2014. Following comments come from the discussion with Jon Medhurst (Tixy) <email address hidden>

#######################################
I see that the failing tests are cpufreq on CPUs 2,3 and 4 and they pass on 0 and 1. One possible explanation is that the kernel has the big.LITTLE Switcher (IKS) running which makes the system think that a pair of big and LITTLE cores are actual just one core. Or, if it's running big.LITTLE MP then it could be the fact that the big and LITTLE clusters each have their own cpufreq driver and the tests don't cope with this.

So, my gut feeling is that the test haven't been designed to cope with big.LITTLE systems.
#######################################

[Amit Kucheria (amitk)]

Botao,

Did these errors occur before on tc2?

Sanjay,

This log is confusing and I think this has to do with your recent changes.
It first checks for presence of cpufreq and continues regardless.

cpufreq is not supported. Skipping all cpufreq tests ./cpufreq_08.sh
./cpufreq_08.sh[67]: cat:
/sys/devices/system/cpu/cpu2/cpufreq/scaling_governor: No such file or
directory
On 13-Mar-2014 4:15 pm, "Botao Sun" <email address hidden> wrote:

> ** Attachment added: "PMQA_Build_268_Log_on_TC2.txt"
>
> https://bugs.launchpad.net/linaro-power-qa/+bug/1291909/+attachment/4021864/+files/PMQA_Build_268_Log_on_TC2.txt
>
> --
> You received this bug notification because you are subscribed to the bug
> report.
> https://bugs.launchpad.net/bugs/1291909
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> Title:
> 6 cpufreq test cases failed on ARM Versatile Express TC2 Android.
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[Lisa Nguyen (lisatn)]

Closing this bug as incomplete after weeks have passed and didn't receive any follow up emails from the reporter.

[Launchpad Janitor (janitor)]

[Expired for Linaro PMWG QA because there has been no activity for 60 days.]