Information is unavailable on Idle stats & Frequency stats pages in PowerTop v2.4 with vexpress A9 Android.

Bug #1311381 reported by Botao
12
This bug affects 2 people
Affects Status Importance Assigned to Milestone
Linaro PMWG Powertop
Fix Released
Medium
sanjay singh rawat

Bug Description

On ARM Versatile Express A9 board with Linaro Android image:

https://android-build.linaro.org/builds/~linaro-android/vexpress-linaro-14.04-release/#build=1

The Idle stats & Frequency stats pages are empty after launched PowerTop v2.4.

For the issue in PowerDebug v0.7.1, please refer to Bug 1229658.

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This issue is observed on following images:
https://android-build.linaro.org/builds/~linaro-android/vexpress-linaro-14.04-release/#build=1
https://android-build.linaro.org/builds/~linaro-android/vexpress-linaro/#build=331
https://android-build.linaro.org/builds/~linaro-android/vexpress-linaro-14.05-release/#build=2

Revision history for this message
Amit Kucheria (amitk) wrote :

Can you point me to a run of PM-QA on this board? It should tell us if it has cpuidle and cpufreq drivers.

Changed in linaro-powertop:
importance: Undecided → Medium
assignee: nobody → sanjay singh rawat (sanjay-rawat)
Revision history for this message
Mohammad Merajul Islam Molla (meraj-enigma) wrote :

I tested on Linaro 14.01 Saucy server on Samsung Arndale Board with a custom kernel (config file attached) and found Idle stats & Frequency stats pages empty. I attached my kernel config file.

Botao (botao-sun)
description: updated
Revision history for this message
sanjay singh rawat (sanjay-rawat) wrote :

hello Meraj,
Does this attached patch helps to resolve the issue? thanks

Revision history for this message
Mohammad Merajul Islam Molla (meraj-enigma) wrote :

Hello Sanjay,

I test on both i386 and ARM (on Samsung Arndale using Ubuntu Saucy Server) and it seems to fix the issue.

- Meraj

Revision history for this message
Mohammad Merajul Islam Molla (meraj-enigma) wrote :

In my previous comment it should be read "Linaro Saucy server" instead of "Ubuntu Saucy Server".

Botao (botao-sun)
description: updated
Revision history for this message
Amit Kucheria (amitk) wrote :

Sanjay, please submit this patch upstream ASAP. We don't want to carry any delta against mainline powertop.

Revision history for this message
Botao (botao-sun) wrote :

On ARM Versatile Express A9 board with Linaro Android image:

https://android-build.linaro.org/builds/~linaro-android/vexpress-linaro/#build=356

Data is available in all columns , with PowerTop v2.4

Changed in linaro-powertop:
status: New → Fix Released
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