Re: [PATCH] drm/i915/gt: make a gt sysfs group and move power management files

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Hi Chris,

> > > > The GT has its own properties and in sysfs they should be grouped
> > > > in the 'gt/' directory.
> > > > 
> > > > Create the 'gt/' directory in sysfs and move the power management
> > > > related files.
> > > 
> > > As shown by BAT, we have a conundrum; do we have to preserve the old
> > > names forevermore? Or do we just userspace that they have to adapt?
> > 
> > With this, I guess you are suggesting to change igt accordingly,
> > because I'm pretty sure this interface is subject to change,
> > sooner or later.
> 
> Right; but what about powertop? And the bajillion wikis?

mmhhh... right!

> Just feels clumsy, so I'd like to spend a moment to see if we can think
> of any options before dropping them. No matter how silly, if userspace
> breaks, it's a regression :(
> 
> Maybe we could do something like keep the old ones and put a deprecation
> warning in?

how about linking and declare the old interface obsolete?

Andi
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