Messages in this thread | | | Date | Thu, 6 Jul 2017 21:59:21 +0300 | From | Ville Syrjälä <> | Subject | Re: [PATCH 3/3] drm: Add CRTC_GET_SEQUENCE and CRTC_QUEUE_SEQUENCE ioctls |
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On Thu, Jul 06, 2017 at 11:22:43AM -0700, Keith Packard wrote: > Ville Syrjälä <ville.syrjala@linux.intel.com> writes: > > > I was mostly thinking of the 'seq = query(); wait(seq + n);' pattern > > where we can avoid doing the full update more than once if we enable > > the interrupt already during the query. > > Don't we still wait 5 seconds before disabling vblank? In that case, the > chances of hitting an idle vblank are pretty slim if the application is > actually busy.
With the disable_immediate thing we only wait until the next vblank before disabling the irq again.
-- Ville Syrjälä Intel OTC
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