At Fri, 13 Nov 2009 08:54:06 -0800,
Arjan van de Ven wrote:
>
> Feature 2: Showing how busy the audio codecs are
>
> PowerTOP already has the feature to suggest to enable HDA audio power saving;
> however we did not yet
> show how effective this power saving was. With the help of a patch created by
> Takashi Iwai (SuSE/Alsa team)
> we now report the utilization (in terms of power saving vs active).
FYI, the patch is in sound GIT tree (and in linux-next):
git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6.git
The commit id is a2f6309e8392e2c14c04594fca8b4876c8c9bc36
ALSA: hda - Add power on/off counter
This can be easily cherry-picked to 2.6.32 and earlier.
thanks,
Takashi
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