Review Request 128085: Fix check that CPU is a valid CPU

[David Edmundson]

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https://git.reviewboard.kde.org/r/128085/
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Review request for KDE Frameworks.


Repository: solid


Description
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We have a check that an devices/system/cpu/cpuN entry contains a
processor and not just an empty socket, however it relies on somewhat
outdated /sys files.

cpuN/cpufreq isn't guaranteed to exist as for some systems (my AMD
processor at least).

The docs in the linux kernel imply topology/core_id should always exist,
and should still work as a valid check that we have a populated CPU
socket.


Diffs
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  src/solid/devices/backends/udev/udevmanager.cpp 3f3a671798e84e6d577df7c3b9b80150ac4d01fc 

Diff: https://git.reviewboard.kde.org/r/128085/diff/


Testing
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Thanks,

David Edmundson

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