Re: [Intel-gfx] [PATCH 18/49] drm/i915: Reduce frequency of unspecific HSW reg debugging

2015-03-30 Thread Paulo Zanoni
2015-03-27 13:12 GMT-03:00 Chris Wilson ch...@chris-wilson.co.uk: On Fri, Mar 27, 2015 at 12:34:05PM -0300, Paulo Zanoni wrote: 2015-03-27 8:01 GMT-03:00 Chris Wilson ch...@chris-wilson.co.uk: Delay the expensive read on the FPGA_DBG register from once per mmio to once per forcewake section

[Intel-gfx] [PATCH 18/49] drm/i915: Reduce frequency of unspecific HSW reg debugging

2015-03-27 Thread Chris Wilson
Delay the expensive read on the FPGA_DBG register from once per mmio to once per forcewake section when we are doing the general wellbeing check rather than the targetted error detection. This almost reduces the overhead of the debug facility (for example when submitting execlists) to zero whilst

Re: [Intel-gfx] [PATCH 18/49] drm/i915: Reduce frequency of unspecific HSW reg debugging

2015-03-27 Thread Chris Wilson
On Fri, Mar 27, 2015 at 12:34:05PM -0300, Paulo Zanoni wrote: 2015-03-27 8:01 GMT-03:00 Chris Wilson ch...@chris-wilson.co.uk: Delay the expensive read on the FPGA_DBG register from once per mmio to once per forcewake section when we are doing the general wellbeing check rather than the

Re: [Intel-gfx] [PATCH 18/49] drm/i915: Reduce frequency of unspecific HSW reg debugging

2015-03-27 Thread Paulo Zanoni
2015-03-27 8:01 GMT-03:00 Chris Wilson ch...@chris-wilson.co.uk: Delay the expensive read on the FPGA_DBG register from once per mmio to once per forcewake section when we are doing the general wellbeing check rather than the targetted error detection. This almost reduces the overhead of the