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Message #66003
[Bug 1324571] Re: powerpc: enable powernv-cpufreq as built-in (vs. module)
This bug is awaiting verification that the kernel in -proposed solves
the problem. Please test the kernel and update this bug with the
results. If the problem is solved, change the tag 'verification-needed-
trusty' to 'verification-done-trusty'.
If verification is not done by 5 working days from today, this fix will
be dropped from the source code, and this bug will be closed.
See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how
to enable and use -proposed. Thank you!
** Tags added: verification-needed-trusty
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https://bugs.launchpad.net/bugs/1324571
Title:
powerpc: enable powernv-cpufreq as built-in (vs. module)
Status in “linux” package in Ubuntu:
Fix Released
Status in “linux” source package in Trusty:
Fix Committed
Status in “linux” source package in Utopic:
Fix Released
Bug description:
The cpufreq driver for powernv is currently built as a module
(powernv-cpufreq.ko; see bug 1309576).
It is not automatically loaded in the boot process (even when included
in the initrd).
It is desirable to have it built-in so it automatically loads on systems booting in PowerNV mode.
One of the reaons is to save power by default (the default cpufreq governor is ondemand).
That cpufreq driver fails gracefully on other (non IBM, OPAL) powerpc
platforms that don't have the expected files in the device-tree (see
[2]).
A patch will be sent to the kernel-team mailing list.
Thanks.
[1] https://lists.ubuntu.com/archives/kernel-
team/2014-April/042431.html
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References