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[Bug 1324571] Re: powerpc: enable powernv-cpufreq as built-in (vs. module)

 

In reviewing the latest SRU upload, I see that Tim only enabled this on
ppc64el/generic.  It would probably be a good idea to enable this on
powerpc/powerpc64-smp as well, as both kernels should be able to install
and boot on POWER8 bare metal.  Can we get this changed, either for this
SRU cycle or the next?

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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 Committed
Status in “linux” source package in Trusty:
  Fix Committed
Status in “linux” source package in Utopic:
  Fix Committed

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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