[Intel-gfx] i915_init takes a full second of kernel init time

[Chris Wilson]

On Wed, 14 Dec 2011 16:38:09 -0800, Scott James Remnant <keybuk at google.com> wrote:
> > After a little bit of digging I found:
> > http://cgit.freedesktop.org/~ickle/linux-2.6/commit/?h=async&id=470d6985b508466308fc4c6aec945cdbf6de39b8
> > -Chris
> >
> I've tried this patch, but it doesn't really reduce the startup time
> by much, the mainline of i915_init is still taking >0.7s with the
> patch applied.

Reverting de842eff4101 (drm/i915: Wait for LVDS panel power sequence)
should get another 0.4s back if intel_lvds_enable() is still in the
critical path. After that the focus looks to be upon speeding up
modeset.
-Chris

-- 
Chris Wilson, Intel Open Source Technology Centre