On Sat, Oct 26, 2013 at 10:27:38AM +0200, Mario Kleiner wrote: > Hi all, > > this patch set for the kernel pushes the latency sensitive bits of > vblank scanoutpos timestamping from the drm core into the kms drivers. > > A change in the locking of the intel-kms driver for Linux 3.11 made > the old approach too inaccurate and also incompatible with the > PREEMPT_RT realtime kernel patch set. These patches fix that problem > and restore the old level of precision and reliability. > > The patch set changes the prototype of driver->get_scanout_position() > to require/allow kms drivers to perform the ktime_get() system time > queries which go along with actual scanout position readout in a way > that provides maximum precision and to return those timestamps to > the drm. It also converts the only two kms drivers which use this api > so far (intel-kms and radeon-kms) to the new api and improves precision > and reliability of the intel-kms a lot. > > Patches have been tested on Intel and AMD Radeon hardware and the Intel > bits have received some review and feedback by Ville Syrjälä. > > Please review and apply if possible. I only have a minor nit about the formatting of multiline comments. They should look like: /* * foo * bar */ instead of: /* foo * bar */ But other than that I didn't spot any issues, so for the series: Reviewed-by: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx> -- Ville Syrjälä Intel OTC _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx http://lists.freedesktop.org/mailman/listinfo/intel-gfx
