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

[Arjan van de Ven]

On 9/1/2012 8:05 PM, Ben Widawsky wrote:
> , from a single trace event you should know the current frequency and the 
> previous frequency.
but if you're doing a heavy game or whatever... you may stay at the highest all 
the time,
and I get no information...
same for getting stuck or being always low.