Re: [Intel-gfx] [PATCH 11/15] drm/i915/bdw: poll semaphores

2013-12-17 Thread Chris Wilson 
On Mon, Dec 16, 2013 at 08:50:47PM -0800, Ben Widawsky wrote:
 Signed-off-by: Ben Widawsky b...@bwidawsk.net

Can you source this recommendation, even if just personal communication?
Is this likely to be temporary? Will a difference (power, latency)
ever be measurable?
-Chris

-- 
Chris Wilson, Intel Open Source Technology Centre
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[Intel-gfx] [PATCH 11/15] drm/i915/bdw: poll semaphores

2013-12-16 Thread Ben Widawsky 
Signed-off-by: Ben Widawsky b...@bwidawsk.net
---
 drivers/gpu/drm/i915/intel_ringbuffer.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/gpu/drm/i915/intel_ringbuffer.c 
b/drivers/gpu/drm/i915/intel_ringbuffer.c
index cf20140..66f6e1c 100644
--- a/drivers/gpu/drm/i915/intel_ringbuffer.c
+++ b/drivers/gpu/drm/i915/intel_ringbuffer.c
@@ -812,6 +812,7 @@ gen8_ring_sync(struct intel_ring_buffer *waiter,
 
intel_ring_emit(waiter, MI_SEMAPHORE_WAIT |
MI_SEMAPHORE_GLOBAL_GTT |
+   MI_SEMAPHORE_POLL |
MI_SEMAPHORE_SAD_GTE_SDD);
intel_ring_emit(waiter, seqno);
intel_ring_emit(waiter,
-- 
1.8.5.1

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