[Intel-gfx] [PATCH] drm/i915: add a tracepoint for gpu frequency changes

[Daniel Vetter]

On Thu, Aug 30, 2012 at 02:34:11PM +0100, Chris Wilson wrote:
> On Thu, 30 Aug 2012 13:26:48 +0200, Daniel Vetter <daniel.vetter at ffwll.ch> wrote:
> > We've had and still have too many issues where the gpu turbot doesn't
> > quite to what it's supposed to do (or what we want it to do).
> > 
> > Adding a tracepoint to track when the desired gpu frequence changes
> > should help a lot in characterizing and understanding problematic
> > workloads.
> > 
> > Also, this should be fairly interesting for power tuning (and
> > especially noticing when the gpu is stuck in high frequencies, as has
> > happened in the past) and hence for integration into powertop and
> > similar tools.
> > 
> > Cc: Arjan van de Ven <arjan at linux.intel.com>
> > Signed-off-by: Daniel Vetter <daniel.vetter at ffwll.ch>
> 
> Like it, even the naming scheme.
> Reviewed-by: Chris Wilson <chris at chris-wilson.co.uk>
Queued for -next, thanks for the review.
-Daniel
-- 
Daniel Vetter
Mail: daniel at ffwll.ch
Mobile: +41 (0)79 365 57 48