Re: [PATCH 1/4] drm/i915: Replace some open-coded i915_map_coherent_type()

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On 01/10/2018 20:44, Chris Wilson wrote:
A few callsites where deciding on using WC or WB maps based on
HAS_LLC(), so replace them with the equivalent helper function
i915_map_coherent_type().

Signed-off-by: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>
---
  drivers/gpu/drm/i915/intel_ringbuffer.c          | 3 +--
  drivers/gpu/drm/i915/selftests/intel_hangcheck.c | 4 ++--
  drivers/gpu/drm/i915/selftests/intel_lrc.c       | 2 +-
  3 files changed, 4 insertions(+), 5 deletions(-)

diff --git a/drivers/gpu/drm/i915/intel_ringbuffer.c b/drivers/gpu/drm/i915/intel_ringbuffer.c
index c092d5099ebf..b8a7a014d46d 100644
--- a/drivers/gpu/drm/i915/intel_ringbuffer.c
+++ b/drivers/gpu/drm/i915/intel_ringbuffer.c
@@ -1023,8 +1023,7 @@ i915_emit_bb_start(struct i915_request *rq,
  int intel_ring_pin(struct intel_ring *ring)
  {
  	struct i915_vma *vma = ring->vma;
-	enum i915_map_type map =
-		HAS_LLC(vma->vm->i915) ? I915_MAP_WB : I915_MAP_WC;
+	enum i915_map_type map = i915_coherent_map_type(vma->vm->i915);
  	unsigned int flags;
  	void *addr;
  	int ret;
diff --git a/drivers/gpu/drm/i915/selftests/intel_hangcheck.c b/drivers/gpu/drm/i915/selftests/intel_hangcheck.c
index db378226ac10..51d0e2bed9e1 100644
--- a/drivers/gpu/drm/i915/selftests/intel_hangcheck.c
+++ b/drivers/gpu/drm/i915/selftests/intel_hangcheck.c
@@ -76,7 +76,7 @@ static int hang_init(struct hang *h, struct drm_i915_private *i915)
  	h->seqno = memset(vaddr, 0xff, PAGE_SIZE);
vaddr = i915_gem_object_pin_map(h->obj,
-					HAS_LLC(i915) ? I915_MAP_WB : I915_MAP_WC);
+					i915_coherent_map_type(i915));
  	if (IS_ERR(vaddr)) {
  		err = PTR_ERR(vaddr);
  		goto err_unpin_hws;
@@ -234,7 +234,7 @@ hang_create_request(struct hang *h, struct intel_engine_cs *engine)
  			return ERR_CAST(obj);
vaddr = i915_gem_object_pin_map(obj,
-						HAS_LLC(h->i915) ? I915_MAP_WB : I915_MAP_WC);
+						i915_coherent_map_type(h->i915));
  		if (IS_ERR(vaddr)) {
  			i915_gem_object_put(obj);
  			return ERR_CAST(vaddr);
diff --git a/drivers/gpu/drm/i915/selftests/intel_lrc.c b/drivers/gpu/drm/i915/selftests/intel_lrc.c
index c8b7f03c35bd..9f241d1c72db 100644
--- a/drivers/gpu/drm/i915/selftests/intel_lrc.c
+++ b/drivers/gpu/drm/i915/selftests/intel_lrc.c
@@ -49,7 +49,7 @@ static int spinner_init(struct spinner *spin, struct drm_i915_private *i915)
  	}
  	spin->seqno = memset(vaddr, 0xff, PAGE_SIZE);
- mode = HAS_LLC(i915) ? I915_MAP_WB : I915_MAP_WC;
+	mode = i915_coherent_map_type(i915);
  	vaddr = i915_gem_object_pin_map(spin->obj, mode);
  	if (IS_ERR(vaddr)) {
  		err = PTR_ERR(vaddr);


Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@xxxxxxxxx>

Regards,

Tvrtko
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