From 03ade51185596a1d1028531c78fda557f244d676 Mon Sep 17 00:00:00 2001 From: Chris Wilson Date: Mon, 27 Apr 2015 13:41:18 +0100 Subject: [PATCH] drm/i915: Inline check required for object syncing prior to execbuf This trims a little overhead from the common case of not needing to synchronize between rings. v2: execlists is special and likes to duplicate code. Signed-off-by: Chris Wilson Signed-off-by: Daniel Vetter --- drivers/gpu/drm/i915/i915_gem_execbuffer.c | 10 +++++++--- drivers/gpu/drm/i915/intel_lrc.c | 9 ++++++--- 2 files changed, 13 insertions(+), 6 deletions(-) diff --git a/drivers/gpu/drm/i915/i915_gem_execbuffer.c b/drivers/gpu/drm/i915/i915_gem_execbuffer.c index 560c79a8a43d..bd0e4bda2c64 100644 --- a/drivers/gpu/drm/i915/i915_gem_execbuffer.c +++ b/drivers/gpu/drm/i915/i915_gem_execbuffer.c @@ -889,6 +889,7 @@ static int i915_gem_execbuffer_move_to_gpu(struct intel_engine_cs *ring, struct list_head *vmas) { + const unsigned other_rings = ~intel_ring_flag(ring); struct i915_vma *vma; uint32_t flush_domains = 0; bool flush_chipset = false; @@ -896,9 +897,12 @@ i915_gem_execbuffer_move_to_gpu(struct intel_engine_cs *ring, list_for_each_entry(vma, vmas, exec_list) { struct drm_i915_gem_object *obj = vma->obj; - ret = i915_gem_object_sync(obj, ring); - if (ret) - return ret; + + if (obj->active & other_rings) { + ret = i915_gem_object_sync(obj, ring); + if (ret) + return ret; + } if (obj->base.write_domain & I915_GEM_DOMAIN_CPU) flush_chipset |= i915_gem_clflush_object(obj, false); diff --git a/drivers/gpu/drm/i915/intel_lrc.c b/drivers/gpu/drm/i915/intel_lrc.c index a169cca48496..96ae90affad5 100644 --- a/drivers/gpu/drm/i915/intel_lrc.c +++ b/drivers/gpu/drm/i915/intel_lrc.c @@ -628,6 +628,7 @@ static int execlists_move_to_gpu(struct intel_ringbuffer *ringbuf, struct list_head *vmas) { struct intel_engine_cs *ring = ringbuf->ring; + const unsigned other_rings = ~intel_ring_flag(ring); struct i915_vma *vma; uint32_t flush_domains = 0; bool flush_chipset = false; @@ -636,9 +637,11 @@ static int execlists_move_to_gpu(struct intel_ringbuffer *ringbuf, list_for_each_entry(vma, vmas, exec_list) { struct drm_i915_gem_object *obj = vma->obj; - ret = i915_gem_object_sync(obj, ring); - if (ret) - return ret; + if (obj->active & other_rings) { + ret = i915_gem_object_sync(obj, ring); + if (ret) + return ret; + } if (obj->base.write_domain & I915_GEM_DOMAIN_CPU) flush_chipset |= i915_gem_clflush_object(obj, false); -- 2.20.1