https://bugzilla.kernel.org/show_bug.cgi?id=65761
--- Comment #39 from Michel Dänzer michel@daenzer.net --- (In reply to Christoph Haag from comment #33)
I'm still kind of searching for a tool that could create a call graph and annotate it over time...
I suspect profiling is just not the right tool for this.
While the Radeon card is supposed to be off, can you attach gdb to the X server process and set a breakpoint on radeon_cs_emit, and if that triggers, attach the output of bt full?