[Intel-gfx] Suggestions on fixing fill_modes ioctl() delays under i915

Chris Wilson chris at chris-wilson.co.uk
Mon Apr 16 15:41:28 CEST 2012

On Mon, 16 Apr 2012 15:04:50 +0300, Dan Aloni <alonid at gmail.com> wrote:
> Now you might ask why it is annoying. Well, for instance, say you are
> debugging an SDL application. Those type of applications usually result in
> the GET_CONTROLLERS ioctl() being called by the X server, and re-running
> the same application in a development cycle makes this issue
> quite noticeable.

The actual problem here is the application requesting a probe of all
outputs rather than the list of current outputs.
See RRGetScreenResourcesCurrent.

Chris Wilson, Intel Open Source Technology Centre

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