[PATCH 11/13] drm/i915: Compact gen8_ring_sync

Tvrtko Ursulin
2016-06-29T15:09:49Z

From: Tvrtko Ursulin <tvrtko.ursulin@intel.com>

Store the semaphore offset in a temporary variable to avoid
having to get the VMA offset twice.

Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
---
drivers/gpu/drm/i915/intel_ringbuffer.c | 7 +++----
1 file changed, 3 insertions(+), 4 deletions(-)

diff --git a/drivers/gpu/drm/i915/intel_ringbuffer.c b/drivers/gpu/drm/i915/intel_ringbuffer.c
index 14218d893d7b..648ddee60c24 100644
--- a/drivers/gpu/drm/i915/intel_ringbuffer.c
+++ b/drivers/gpu/drm/i915/intel_ringbuffer.c
@@ -1542,6 +1542,7 @@ gen8_ring_sync(struct drm_i915_gem_request *waiter_req,
{
struct intel_engine_cs *waiter = waiter_req->engine;
struct drm_i915_private *dev_priv = waiter_req->i915;
+ u64 offset = GEN8_WAIT_OFFSET(waiter, signaller->id);
struct i915_hw_ppgtt *ppgtt;
int ret;

@@ -1553,10 +1554,8 @@ gen8_ring_sync(struct drm_i915_gem_request *waiter_req,
MI_SEMAPHORE_GLOBAL_GTT |
MI_SEMAPHORE_SAD_GTE_SDD);
intel_ring_emit(waiter, seqno);
- intel_ring_emit(waiter,
- lower_32_bits(GEN8_WAIT_OFFSET(waiter, signaller->id)));
- intel_ring_emit(waiter,
- upper_32_bits(GEN8_WAIT_OFFSET(waiter, signaller->id)));
+ intel_ring_emit(waiter, lower_32_bits(offset));
+ intel_ring_emit(waiter, upper_32_bits(offset));
intel_ring_advance(waiter);

/* When the !RCS engines idle waiting upon a semaphore, they lose their
--
1.9.1