Re: [Intel-gfx] [PATCH v2] drm/i915: use semaphores for the display plane

2012-04-11 Thread Ben Widawsky
On Wed, 11 Apr 2012 16:52:33 +0100 Chris Wilson wrote: > On Wed, 11 Apr 2012 08:46:40 -0700, Ben Widawsky wrote: > > On Wed, 11 Apr 2012 14:06:42 +0200 > > Daniel Vetter wrote: > > > > > On Wed, Apr 11, 2012 at 12:53:15PM +0100, Chris Wilson wrote: > > > > On Thu, 5 Apr 2012 14:47:36 -0700, B

Re: [Intel-gfx] [PATCH v2] drm/i915: use semaphores for the display plane

2012-04-11 Thread Chris Wilson
On Wed, 11 Apr 2012 08:46:40 -0700, Ben Widawsky wrote: > On Wed, 11 Apr 2012 14:06:42 +0200 > Daniel Vetter wrote: > > > On Wed, Apr 11, 2012 at 12:53:15PM +0100, Chris Wilson wrote: > > > On Thu, 5 Apr 2012 14:47:36 -0700, Ben Widawsky > > > wrote: > > > > In theory this will have performan

Re: [Intel-gfx] [PATCH v2] drm/i915: use semaphores for the display plane

2012-04-11 Thread Ben Widawsky
On Wed, 11 Apr 2012 14:06:42 +0200 Daniel Vetter wrote: > On Wed, Apr 11, 2012 at 12:53:15PM +0100, Chris Wilson wrote: > > On Thu, 5 Apr 2012 14:47:36 -0700, Ben Widawsky wrote: > > > In theory this will have performance and power improvements. Performance > > > because we don't need to stall

Re: [Intel-gfx] [PATCH v2] drm/i915: use semaphores for the display plane

2012-04-11 Thread Daniel Vetter
On Wed, Apr 11, 2012 at 12:53:15PM +0100, Chris Wilson wrote: > On Thu, 5 Apr 2012 14:47:36 -0700, Ben Widawsky wrote: > > In theory this will have performance and power improvements. Performance > > because we don't need to stall when the scanout BO is busy, and power > > because we don't have t

Re: [Intel-gfx] [PATCH v2] drm/i915: use semaphores for the display plane

2012-04-11 Thread Chris Wilson
On Thu, 5 Apr 2012 14:47:36 -0700, Ben Widawsky wrote: > In theory this will have performance and power improvements. Performance > because we don't need to stall when the scanout BO is busy, and power > because we don't have to stall when the BO is busy (and the ring can > even go to sleep if th

Re: [Intel-gfx] [PATCH v2] drm/i915: use semaphores for the display plane

2012-04-10 Thread Daniel Vetter
On Thu, Apr 05, 2012 at 02:47:36PM -0700, Ben Widawsky wrote: > In theory this will have performance and power improvements. Performance > because we don't need to stall when the scanout BO is busy, and power > because we don't have to stall when the BO is busy (and the ring can > even go to sleep

[Intel-gfx] [PATCH v2] drm/i915: use semaphores for the display plane

2012-04-05 Thread Ben Widawsky
In theory this will have performance and power improvements. Performance because we don't need to stall when the scanout BO is busy, and power because we don't have to stall when the BO is busy (and the ring can even go to sleep if the HW supports it). v2: squash 2 patches into 1 (me) un-inline th