DRI/DRM profiling for performance analysis?

Hello,

Do we currently have a method of profiling DRI/DRM drivers?

I was thinking that it would be interesting to:

1) Execute a benchmark, or some "timedemo" of a game 2) See how many times each dri/drm driver function is called, maybe top 20 most often called functions, and the total cpu time used for those functions.

So you could see that:

1) some function is called often, but it doesn't take much total cpu time. 2) some function is called just a couple of times, but it takes a lot of cpu time.

And everything in between.. would be good hints to use for optimizing the apps/drivers, and for comparison between different versions..

Does this make sense?

-- Pasi