[RFC/PATCH] idle loop changes

Tom Rini trini at kernel.crashing.org
Thu Aug 1 10:09:12 EST 2002

On Wed, Jul 31, 2002 at 02:24:01PM -0700, Matt Porter wrote:
> On Wed, Jul 31, 2002 at 12:32:00PM -0700, Tom Rini wrote:
> >
> > The following is based on the final patch that Armin posted a short
> > while back.  What this does is allow for the power_save() function to be
> > overridden, but still provide a 'sane' default.  This moves the existing
> > power_save() function into ppc6xx_idle.c, as after talking with Hollis,
> > the function won't work as-is on Power3/iSeries (bits have moved or are
> > non-existant).
> >
> > I'm not totally sure if it's better to do it this way, or to not provide
> > a default power_save(), so that if we don't set pm_idle to something, we
> > just never call power_save() (as opposed to a call, check for a bit &
> > return).  Comments?
> To build it on non-6xx you need to move the powersave_nap declaration
> back to idle.c and extern it in ppc6xx_idle.c.  It's required by
> sysctl.  Other than that, this will work.

Bleah.  I'm not sure if the sysctl is wrong or not right now.  IIRC,
powersave_nap is only actually made use of on pmac, and from what I
remember of talking to Ben, it's only really an option on 6xx anyhow.
But good spotting none the less. :)

Tom Rini (TR1265)

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