[PATCH 1/2] drm/i915: Rename some warts in the VMA API

[PATCH 1/2] drm/i915: Rename some warts in the VMA API

[Chris Wilson]

Whilst writing testcases to exercise the VMA API, some oddities came to
light, such as i915_gem_obj_lookup_or_create(). Joonas suggested
i915_vma_instance() as a neat replacement, so rename them, move them to
i915_vma.c  and add some kerneldoc as a sugary bonus.

s/i915_gem_obj_to_vma/i915_vma_lookup/
s/i915_gem_obj_lookup_or_create_vma/i915_vma_instance/

Suggested-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
---
 drivers/gpu/drm/i915/i915_drv.h            | 12 +---
 drivers/gpu/drm/i915/i915_gem.c            |  2 +-
 drivers/gpu/drm/i915/i915_gem_execbuffer.c |  2 +-
 drivers/gpu/drm/i915/i915_gem_gtt.c        | 45 ---------------
 drivers/gpu/drm/i915/i915_gem_stolen.c     |  2 +-
 drivers/gpu/drm/i915/i915_vma.c            | 90 +++++++++++++++++++++++++++++-
 drivers/gpu/drm/i915/i915_vma.h            | 10 ++++
 7 files changed, 103 insertions(+), 60 deletions(-)

diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index 38509505424d..59d950554614 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -3374,16 +3374,6 @@ struct drm_gem_object *i915_gem_prime_import(struct drm_device *dev,
 struct dma_buf *i915_gem_prime_export(struct drm_device *dev,
 				struct drm_gem_object *gem_obj, int flags);
 
-struct i915_vma *
-i915_gem_obj_to_vma(struct drm_i915_gem_object *obj,
-		     struct i915_address_space *vm,
-		     const struct i915_ggtt_view *view);
-
-struct i915_vma *
-i915_gem_obj_lookup_or_create_vma(struct drm_i915_gem_object *obj,
-				  struct i915_address_space *vm,
-				  const struct i915_ggtt_view *view);
-
 static inline struct i915_hw_ppgtt *
 i915_vm_to_ppgtt(struct i915_address_space *vm)
 {
@@ -3394,7 +3384,7 @@ static inline struct i915_vma *
 i915_gem_object_to_ggtt(struct drm_i915_gem_object *obj,
 			const struct i915_ggtt_view *view)
 {
-	return i915_gem_obj_to_vma(obj, &to_i915(obj->base.dev)->ggtt.base, view);
+	return i915_vma_lookup(obj, &to_i915(obj->base.dev)->ggtt.base, view);
 }
 
 static inline unsigned long
diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c
index 4ab846256237..a8f9db6f210f 100644
--- a/drivers/gpu/drm/i915/i915_gem.c
+++ b/drivers/gpu/drm/i915/i915_gem.c
@@ -3645,7 +3645,7 @@ i915_gem_object_ggtt_pin(struct drm_i915_gem_object *obj,
 
 	lockdep_assert_held(&obj->base.dev->struct_mutex);
 
-	vma = i915_gem_obj_lookup_or_create_vma(obj, vm, view);
+	vma = i915_vma_instance(obj, vm, view);
 	if (IS_ERR(vma))
 		return vma;
 
diff --git a/drivers/gpu/drm/i915/i915_gem_execbuffer.c b/drivers/gpu/drm/i915/i915_gem_execbuffer.c
index 8387bba90f9e..57bec08e80c5 100644
--- a/drivers/gpu/drm/i915/i915_gem_execbuffer.c
+++ b/drivers/gpu/drm/i915/i915_gem_execbuffer.c
@@ -184,7 +184,7 @@ eb_lookup_vmas(struct eb_vmas *eb,
 		 * from the (obj, vm) we don't run the risk of creating
 		 * duplicated vmas for the same vm.
 		 */
-		vma = i915_gem_obj_lookup_or_create_vma(obj, vm, NULL);
+		vma = i915_vma_instance(obj, vm, NULL);
 		if (unlikely(IS_ERR(vma))) {
 			DRM_DEBUG("Failed to lookup VMA\n");
 			ret = PTR_ERR(vma);
diff --git a/drivers/gpu/drm/i915/i915_gem_gtt.c b/drivers/gpu/drm/i915/i915_gem_gtt.c
index 1da449c618a4..b52204d4454c 100644
--- a/drivers/gpu/drm/i915/i915_gem_gtt.c
+++ b/drivers/gpu/drm/i915/i915_gem_gtt.c
@@ -3360,51 +3360,6 @@ void i915_gem_restore_gtt_mappings(struct drm_i915_private *dev_priv)
 	i915_ggtt_invalidate(dev_priv);
 }
 
-struct i915_vma *
-i915_gem_obj_to_vma(struct drm_i915_gem_object *obj,
-		    struct i915_address_space *vm,
-		    const struct i915_ggtt_view *view)
-{
-	struct rb_node *rb;
-
-	rb = obj->vma_tree.rb_node;
-	while (rb) {
-		struct i915_vma *vma = rb_entry(rb, struct i915_vma, obj_node);
-		long cmp;
-
-		cmp = i915_vma_compare(vma, vm, view);
-		if (cmp == 0)
-			return vma;
-
-		if (cmp < 0)
-			rb = rb->rb_right;
-		else
-			rb = rb->rb_left;
-	}
-
-	return NULL;
-}
-
-struct i915_vma *
-i915_gem_obj_lookup_or_create_vma(struct drm_i915_gem_object *obj,
-				  struct i915_address_space *vm,
-				  const struct i915_ggtt_view *view)
-{
-	struct i915_vma *vma;
-
-	lockdep_assert_held(&obj->base.dev->struct_mutex);
-	GEM_BUG_ON(view && !i915_is_ggtt(vm));
-
-	vma = i915_gem_obj_to_vma(obj, vm, view);
-	if (!vma) {
-		vma = i915_vma_create(obj, vm, view);
-		GEM_BUG_ON(vma != i915_gem_obj_to_vma(obj, vm, view));
-	}
-
-	GEM_BUG_ON(i915_vma_is_closed(vma));
-	return vma;
-}
-
 static struct scatterlist *
 rotate_pages(const dma_addr_t *in, unsigned int offset,
 	     unsigned int width, unsigned int height,
diff --git a/drivers/gpu/drm/i915/i915_gem_stolen.c b/drivers/gpu/drm/i915/i915_gem_stolen.c
index 4d49eb025cb5..e1ee0fa77244 100644
--- a/drivers/gpu/drm/i915/i915_gem_stolen.c
+++ b/drivers/gpu/drm/i915/i915_gem_stolen.c
@@ -683,7 +683,7 @@ i915_gem_object_create_stolen_for_preallocated(struct drm_i915_private *dev_priv
 	if (ret)
 		goto err;
 
-	vma = i915_gem_obj_lookup_or_create_vma(obj, &ggtt->base, NULL);
+	vma = i915_vma_instance(obj, &ggtt->base, NULL);
 	if (IS_ERR(vma)) {
 		ret = PTR_ERR(vma);
 		goto err_pages;
diff --git a/drivers/gpu/drm/i915/i915_vma.c b/drivers/gpu/drm/i915/i915_vma.c
index fe93ed1e012f..0a7e42aaf633 100644
--- a/drivers/gpu/drm/i915/i915_vma.c
+++ b/drivers/gpu/drm/i915/i915_vma.c
@@ -146,6 +146,59 @@ __i915_vma_create(struct drm_i915_gem_object *obj,
 	return vma;
 }
 
+/**
+ * i915_vma_lookup - finds a matching VMA
+ * @obj - parent  &drm_i915_gem_object to be mapped
+ * @vm - address space in which the mapping is located
+ * @view - additional mapping requirements
+ *
+ * i915_vma_lookup() looks up an existing VMA of the @obj in the @vm with
+ * the same @view characteristics.
+ *
+ * Must be called with struct_mutex held.
+ *
+ * Returns the vma if found, or NULL.
+ */
+struct i915_vma *
+i915_vma_lookup(struct drm_i915_gem_object *obj,
+		struct i915_address_space *vm,
+		const struct i915_ggtt_view *view)
+{
+	struct rb_node *rb;
+
+	lockdep_assert_held(&obj->base.dev->struct_mutex);
+
+	rb = obj->vma_tree.rb_node;
+	while (rb) {
+		struct i915_vma *vma = rb_entry(rb, struct i915_vma, obj_node);
+		long cmp;
+
+		cmp = i915_vma_compare(vma, vm, view);
+		if (cmp == 0)
+			return vma;
+
+		if (cmp < 0)
+			rb = rb->rb_right;
+		else
+			rb = rb->rb_left;
+	}
+
+	return NULL;
+}
+
+/**
+ * i915_vma_create - creates a VMA
+ * @obj - parent  &drm_i915_gem_object to be mapped
+ * @vm - address space in which the mapping is located
+ * @view - additional mapping requirements
+ *
+ * i915_vma_create() allocates a new VMA of the @obj in the @vm with
+ * @view characteristics.
+ *
+ * Must be called with struct_mutex held.
+ *
+ * Returns the vma if found, or an error pointer.
+ */
 struct i915_vma *
 i915_vma_create(struct drm_i915_gem_object *obj,
 		struct i915_address_space *vm,
@@ -153,12 +206,47 @@ i915_vma_create(struct drm_i915_gem_object *obj,
 {
 	lockdep_assert_held(&obj->base.dev->struct_mutex);
 	GEM_BUG_ON(view && !i915_is_ggtt(vm));
-	GEM_BUG_ON(i915_gem_obj_to_vma(obj, vm, view));
+	GEM_BUG_ON(i915_vma_lookup(obj, vm, view));
 
 	return __i915_vma_create(obj, vm, view);
 }
 
 /**
+ * i915_vma_instance - return the singleton instance of the VMA
+ * @obj - parent &drm_i915_gem_object to be mapped
+ * @vm - address space in which the mapping is located
+ * @view - additional mapping requirements
+ *
+ * i915_vma_instance() looks up an existing VMA of the @obj in the @vm with
+ * the same @view characteristics. If a match is not found, one is created.
+ * Once created, the VMA is kept until either the object is freed, or the
+ * address space is closed.
+ *
+ * Must be called with struct_mutex held.
+ *
+ * Returns the vma, or an error pointer.
+ */
+struct i915_vma *
+i915_vma_instance(struct drm_i915_gem_object *obj,
+		  struct i915_address_space *vm,
+		  const struct i915_ggtt_view *view)
+{
+	struct i915_vma *vma;
+
+	lockdep_assert_held(&obj->base.dev->struct_mutex);
+	GEM_BUG_ON(view && !i915_is_ggtt(vm));
+	GEM_BUG_ON(vm->closed);
+
+	vma = i915_vma_lookup(obj, vm, view);
+	if (!vma)
+		vma = i915_vma_create(obj, vm, view);
+
+	GEM_BUG_ON(!IS_ERR(vma) && i915_vma_is_closed(vma));
+	GEM_BUG_ON(!IS_ERR(vma) && i915_vma_lookup(obj, vm, view) != vma);
+	return vma;
+}
+
+/**
  * i915_vma_bind - Sets up PTEs for an VMA in it's corresponding address space.
  * @vma: VMA to map
  * @cache_level: mapping cache level
diff --git a/drivers/gpu/drm/i915/i915_vma.h b/drivers/gpu/drm/i915/i915_vma.h
index 86b60fb4e954..b3c81190b4a0 100644
--- a/drivers/gpu/drm/i915/i915_vma.h
+++ b/drivers/gpu/drm/i915/i915_vma.h
@@ -116,6 +116,16 @@ i915_vma_create(struct drm_i915_gem_object *obj,
 		struct i915_address_space *vm,
 		const struct i915_ggtt_view *view);
 
+struct i915_vma *
+i915_vma_lookup(struct drm_i915_gem_object *obj,
+		struct i915_address_space *vm,
+		const struct i915_ggtt_view *view);
+
+struct i915_vma *
+i915_vma_instance(struct drm_i915_gem_object *obj,
+		  struct i915_address_space *vm,
+		  const struct i915_ggtt_view *view);
+
 void i915_vma_unpin_and_release(struct i915_vma **p_vma);
 
 static inline bool i915_vma_is_ggtt(const struct i915_vma *vma)
-- 
2.11.0

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[PATCH 2/2] drm/i915: Remove i915_vma_create from VMA API

[Chris Wilson]

With the introduce of i915_vma_instance() for obtaining the VMA
singleton for a (obj, vm, view) tuple, we can remove the
i915_vma_create() in favour of a single entry point. We do incur a
lookup onto an empty tree, but the i915_vma_create() were being called
infrequently and during initialisation, so the small overhead is
negligible.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
---
 drivers/gpu/drm/i915/i915_gem_context.c      |  2 +-
 drivers/gpu/drm/i915/i915_gem_render_state.c |  2 +-
 drivers/gpu/drm/i915/i915_guc_submission.c   |  2 +-
 drivers/gpu/drm/i915/i915_vma.c              | 33 +++-------------------------
 drivers/gpu/drm/i915/i915_vma.h              |  5 -----
 drivers/gpu/drm/i915/intel_engine_cs.c       |  2 +-
 drivers/gpu/drm/i915/intel_lrc.c             |  4 ++--
 drivers/gpu/drm/i915/intel_ringbuffer.c      |  6 ++---
 8 files changed, 12 insertions(+), 44 deletions(-)

diff --git a/drivers/gpu/drm/i915/i915_gem_context.c b/drivers/gpu/drm/i915/i915_gem_context.c
index 0a4728fdecdc..17f90c618208 100644
--- a/drivers/gpu/drm/i915/i915_gem_context.c
+++ b/drivers/gpu/drm/i915/i915_gem_context.c
@@ -269,7 +269,7 @@ __create_hw_context(struct drm_i915_private *dev_priv,
 			goto err_out;
 		}
 
-		vma = i915_vma_create(obj, &dev_priv->ggtt.base, NULL);
+		vma = i915_vma_instance(obj, &dev_priv->ggtt.base, NULL);
 		if (IS_ERR(vma)) {
 			i915_gem_object_put(obj);
 			ret = PTR_ERR(vma);
diff --git a/drivers/gpu/drm/i915/i915_gem_render_state.c b/drivers/gpu/drm/i915/i915_gem_render_state.c
index 63ae7e813335..b42c81b42487 100644
--- a/drivers/gpu/drm/i915/i915_gem_render_state.c
+++ b/drivers/gpu/drm/i915/i915_gem_render_state.c
@@ -200,7 +200,7 @@ int i915_gem_render_state_init(struct intel_engine_cs *engine)
 		goto err_free;
 	}
 
-	so->vma = i915_vma_create(obj, &engine->i915->ggtt.base, NULL);
+	so->vma = i915_vma_instance(obj, &engine->i915->ggtt.base, NULL);
 	if (IS_ERR(so->vma)) {
 		ret = PTR_ERR(so->vma);
 		goto err_obj;
diff --git a/drivers/gpu/drm/i915/i915_guc_submission.c b/drivers/gpu/drm/i915/i915_guc_submission.c
index 913d87358972..eddd639c3525 100644
--- a/drivers/gpu/drm/i915/i915_guc_submission.c
+++ b/drivers/gpu/drm/i915/i915_guc_submission.c
@@ -568,7 +568,7 @@ static struct i915_vma *guc_allocate_vma(struct intel_guc *guc, u32 size)
 	if (IS_ERR(obj))
 		return ERR_CAST(obj);
 
-	vma = i915_vma_create(obj, &dev_priv->ggtt.base, NULL);
+	vma = i915_vma_instance(obj, &dev_priv->ggtt.base, NULL);
 	if (IS_ERR(vma))
 		goto err;
 
diff --git a/drivers/gpu/drm/i915/i915_vma.c b/drivers/gpu/drm/i915/i915_vma.c
index 0a7e42aaf633..19fa4f85bbc7 100644
--- a/drivers/gpu/drm/i915/i915_vma.c
+++ b/drivers/gpu/drm/i915/i915_vma.c
@@ -69,16 +69,14 @@ i915_vma_retire(struct i915_gem_active *active,
 }
 
 static struct i915_vma *
-__i915_vma_create(struct drm_i915_gem_object *obj,
-		  struct i915_address_space *vm,
-		  const struct i915_ggtt_view *view)
+i915_vma_create(struct drm_i915_gem_object *obj,
+		struct i915_address_space *vm,
+		const struct i915_ggtt_view *view)
 {
 	struct i915_vma *vma;
 	struct rb_node *rb, **p;
 	int i;
 
-	GEM_BUG_ON(vm->closed);
-
 	vma = kmem_cache_zalloc(to_i915(obj->base.dev)->vmas, GFP_KERNEL);
 	if (vma == NULL)
 		return ERR_PTR(-ENOMEM);
@@ -187,31 +185,6 @@ i915_vma_lookup(struct drm_i915_gem_object *obj,
 }
 
 /**
- * i915_vma_create - creates a VMA
- * @obj - parent  &drm_i915_gem_object to be mapped
- * @vm - address space in which the mapping is located
- * @view - additional mapping requirements
- *
- * i915_vma_create() allocates a new VMA of the @obj in the @vm with
- * @view characteristics.
- *
- * Must be called with struct_mutex held.
- *
- * Returns the vma if found, or an error pointer.
- */
-struct i915_vma *
-i915_vma_create(struct drm_i915_gem_object *obj,
-		struct i915_address_space *vm,
-		const struct i915_ggtt_view *view)
-{
-	lockdep_assert_held(&obj->base.dev->struct_mutex);
-	GEM_BUG_ON(view && !i915_is_ggtt(vm));
-	GEM_BUG_ON(i915_vma_lookup(obj, vm, view));
-
-	return __i915_vma_create(obj, vm, view);
-}
-
-/**
  * i915_vma_instance - return the singleton instance of the VMA
  * @obj - parent &drm_i915_gem_object to be mapped
  * @vm - address space in which the mapping is located
diff --git a/drivers/gpu/drm/i915/i915_vma.h b/drivers/gpu/drm/i915/i915_vma.h
index b3c81190b4a0..82a56193985c 100644
--- a/drivers/gpu/drm/i915/i915_vma.h
+++ b/drivers/gpu/drm/i915/i915_vma.h
@@ -112,11 +112,6 @@ struct i915_vma {
 };
 
 struct i915_vma *
-i915_vma_create(struct drm_i915_gem_object *obj,
-		struct i915_address_space *vm,
-		const struct i915_ggtt_view *view);
-
-struct i915_vma *
 i915_vma_lookup(struct drm_i915_gem_object *obj,
 		struct i915_address_space *vm,
 		const struct i915_ggtt_view *view);
diff --git a/drivers/gpu/drm/i915/intel_engine_cs.c b/drivers/gpu/drm/i915/intel_engine_cs.c
index 97bbbc3d6aa8..371acf109e34 100644
--- a/drivers/gpu/drm/i915/intel_engine_cs.c
+++ b/drivers/gpu/drm/i915/intel_engine_cs.c
@@ -264,7 +264,7 @@ int intel_engine_create_scratch(struct intel_engine_cs *engine, int size)
 		return PTR_ERR(obj);
 	}
 
-	vma = i915_vma_create(obj, &engine->i915->ggtt.base, NULL);
+	vma = i915_vma_instance(obj, &engine->i915->ggtt.base, NULL);
 	if (IS_ERR(vma)) {
 		ret = PTR_ERR(vma);
 		goto err_unref;
diff --git a/drivers/gpu/drm/i915/intel_lrc.c b/drivers/gpu/drm/i915/intel_lrc.c
index 8f8dcd9a9524..432ee495dec2 100644
--- a/drivers/gpu/drm/i915/intel_lrc.c
+++ b/drivers/gpu/drm/i915/intel_lrc.c
@@ -1225,7 +1225,7 @@ static int lrc_setup_wa_ctx_obj(struct intel_engine_cs *engine, u32 size)
 	if (IS_ERR(obj))
 		return PTR_ERR(obj);
 
-	vma = i915_vma_create(obj, &engine->i915->ggtt.base, NULL);
+	vma = i915_vma_instance(obj, &engine->i915->ggtt.base, NULL);
 	if (IS_ERR(vma)) {
 		err = PTR_ERR(vma);
 		goto err;
@@ -2198,7 +2198,7 @@ static int execlists_context_deferred_alloc(struct i915_gem_context *ctx,
 		return PTR_ERR(ctx_obj);
 	}
 
-	vma = i915_vma_create(ctx_obj, &ctx->i915->ggtt.base, NULL);
+	vma = i915_vma_instance(ctx_obj, &ctx->i915->ggtt.base, NULL);
 	if (IS_ERR(vma)) {
 		ret = PTR_ERR(vma);
 		goto error_deref_obj;
diff --git a/drivers/gpu/drm/i915/intel_ringbuffer.c b/drivers/gpu/drm/i915/intel_ringbuffer.c
index 49fa8006c6a2..69035e4f9b3b 100644
--- a/drivers/gpu/drm/i915/intel_ringbuffer.c
+++ b/drivers/gpu/drm/i915/intel_ringbuffer.c
@@ -1738,7 +1738,7 @@ static int init_status_page(struct intel_engine_cs *engine)
 	if (ret)
 		goto err;
 
-	vma = i915_vma_create(obj, &engine->i915->ggtt.base, NULL);
+	vma = i915_vma_instance(obj, &engine->i915->ggtt.base, NULL);
 	if (IS_ERR(vma)) {
 		ret = PTR_ERR(vma);
 		goto err;
@@ -1872,7 +1872,7 @@ intel_ring_create_vma(struct drm_i915_private *dev_priv, int size)
 	/* mark ring buffers as read-only from GPU side by default */
 	obj->gt_ro = 1;
 
-	vma = i915_vma_create(obj, &dev_priv->ggtt.base, NULL);
+	vma = i915_vma_instance(obj, &dev_priv->ggtt.base, NULL);
 	if (IS_ERR(vma))
 		goto err;
 
@@ -2462,7 +2462,7 @@ static void intel_ring_init_semaphores(struct drm_i915_private *dev_priv,
 		if (IS_ERR(obj))
 			goto err;
 
-		vma = i915_vma_create(obj, &dev_priv->ggtt.base, NULL);
+		vma = i915_vma_instance(obj, &dev_priv->ggtt.base, NULL);
 		if (IS_ERR(vma))
 			goto err_obj;
 
-- 
2.11.0

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Re: [PATCH 1/2] drm/i915: Rename some warts in the VMA API

[Chris Wilson]

On Mon, Jan 16, 2017 at 09:49:45AM +0000, Chris Wilson wrote:
> Whilst writing testcases to exercise the VMA API, some oddities came to
> light, such as i915_gem_obj_lookup_or_create(). Joonas suggested
> i915_vma_instance() as a neat replacement, so rename them, move them to
> i915_vma.c  and add some kerneldoc as a sugary bonus.
> 
> s/i915_gem_obj_to_vma/i915_vma_lookup/
> s/i915_gem_obj_lookup_or_create_vma/i915_vma_instance/
> 
> Suggested-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
> Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
> Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
> Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com>

Note that we add a lockdep check here that detects misuse during atomic
modesetting. Woohoo /o\
-Chris

-- 
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Re: [PATCH 1/2] drm/i915: Rename some warts in the VMA API

[Joonas Lahtinen]

On ma, 2017-01-16 at 09:49 +0000, Chris Wilson wrote:
> Whilst writing testcases to exercise the VMA API, some oddities came to
> light, such as i915_gem_obj_lookup_or_create(). Joonas suggested
> i915_vma_instance() as a neat replacement, so rename them, move them to
> i915_vma.c  and add some kerneldoc as a sugary bonus.
> 
> s/i915_gem_obj_to_vma/i915_vma_lookup/
> s/i915_gem_obj_lookup_or_create_vma/i915_vma_instance/
> 
> Suggested-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
> Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
> Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
> Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com>

<SNIP>

> +/**
> + * i915_vma_lookup - finds a matching VMA
> + * @obj - parent  &drm_i915_gem_object to be mapped

Before this circles back from the code checkers; s/ - /: /g

Also extra space, and not sure if it was supposed to always be
"&struct foo"?

Didn't spot anything else, so with kerneldoc fixed;

Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>

Regards, Joonas
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Open Source Technology Center
Intel Corporation
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Re: [PATCH 2/2] drm/i915: Remove i915_vma_create from VMA API

[Joonas Lahtinen]

On ma, 2017-01-16 at 09:49 +0000, Chris Wilson wrote:
> With the introduce of i915_vma_instance() for obtaining the VMA
> singleton for a (obj, vm, view) tuple, we can remove the
> i915_vma_create() in favour of a single entry point. We do incur a
> lookup onto an empty tree, but the i915_vma_create() were being called
> infrequently and during initialisation, so the small overhead is
> negligible.
> 
> Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>

<SNIP>

>  struct i915_vma *
> -i915_vma_create(struct drm_i915_gem_object *obj,
> -		struct i915_address_space *vm,
> -		const struct i915_ggtt_view *view);
> -
> -struct i915_vma *
>  i915_vma_lookup(struct drm_i915_gem_object *obj,
>  		struct i915_address_space *vm,
>  		const struct i915_ggtt_view *view);

I'd say our de-facto is to drop "i915_" prefix from locals.

Would add to the code understandability, but anyway;

Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>

Regards, Joonas
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Open Source Technology Center
Intel Corporation
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✗ Fi.CI.BAT: warning for series starting with [1/2] drm/i915: Rename some warts in the VMA API

[Patchwork]

== Series Details ==

Series: series starting with [1/2] drm/i915: Rename some warts in the VMA API
URL   : https://patchwork.freedesktop.org/series/18050/
State : warning

== Summary ==

Series 18050v1 Series without cover letter
https://patchwork.freedesktop.org/api/1.0/series/18050/revisions/1/mbox/

Test core_auth:
        Subgroup basic-auth:
                pass       -> DMESG-WARN (fi-byt-n2820)
                pass       -> DMESG-WARN (fi-kbl-7500u)
                pass       -> DMESG-WARN (fi-bxt-j4205)
                pass       -> DMESG-WARN (fi-hsw-4770r)
                pass       -> DMESG-WARN (fi-snb-2600)
                pass       -> DMESG-WARN (fi-skl-6700hq)
                pass       -> DMESG-WARN (fi-snb-2520m)
                pass       -> DMESG-WARN (fi-bxt-t5700)
                pass       -> DMESG-WARN (fi-skl-6700k)
                pass       -> DMESG-WARN (fi-ivb-3770)
                pass       -> DMESG-WARN (fi-bdw-5557u)
                pass       -> DMESG-WARN (fi-ivb-3520m)
                pass       -> DMESG-WARN (fi-hsw-4770)
                pass       -> DMESG-WARN (fi-bsw-n3050)
                pass       -> DMESG-WARN (fi-skl-6260u)
                pass       -> DMESG-WARN (fi-byt-j1900)
                pass       -> DMESG-WARN (fi-skl-6770hq)
Test core_prop_blob:
        Subgroup basic:
                pass       -> DMESG-WARN (fi-byt-n2820)
                pass       -> DMESG-WARN (fi-kbl-7500u)
                pass       -> DMESG-WARN (fi-bxt-j4205)
                pass       -> DMESG-WARN (fi-hsw-4770r)
                pass       -> DMESG-WARN (fi-snb-2600)
                pass       -> DMESG-WARN (fi-skl-6700hq)
                pass       -> DMESG-WARN (fi-snb-2520m)
                pass       -> DMESG-WARN (fi-bxt-t5700)
                pass       -> DMESG-WARN (fi-skl-6700k)
                pass       -> DMESG-WARN (fi-ivb-3770)
                pass       -> DMESG-WARN (fi-bdw-5557u)
                pass       -> DMESG-WARN (fi-ivb-3520m)
                pass       -> DMESG-WARN (fi-hsw-4770)
                pass       -> DMESG-WARN (fi-bsw-n3050)
                pass       -> DMESG-WARN (fi-skl-6260u)
                pass       -> DMESG-WARN (fi-byt-j1900)
                pass       -> DMESG-WARN (fi-skl-6770hq)
Test drv_getparams_basic:
        Subgroup basic-eu-total:
                pass       -> DMESG-WARN (fi-byt-n2820)
                pass       -> DMESG-WARN (fi-kbl-7500u)
                pass       -> DMESG-WARN (fi-bxt-j4205)
                pass       -> DMESG-WARN (fi-hsw-4770r)
                pass       -> DMESG-WARN (fi-snb-2600)
                pass       -> DMESG-WARN (fi-skl-6700hq)
                pass       -> DMESG-WARN (fi-snb-2520m)
                pass       -> DMESG-WARN (fi-bxt-t5700)
                pass       -> DMESG-WARN (fi-skl-6700k)
                pass       -> DMESG-WARN (fi-ivb-3770)
                pass       -> DMESG-WARN (fi-bdw-5557u)
                pass       -> DMESG-WARN (fi-ivb-3520m)
                pass       -> DMESG-WARN (fi-hsw-4770)
                pass       -> DMESG-WARN (fi-bsw-n3050)
                pass       -> DMESG-WARN (fi-skl-6260u)
                pass       -> DMESG-WARN (fi-byt-j1900)
                pass       -> DMESG-WARN (fi-skl-6770hq)
        Subgroup basic-subslice-total:
                pass       -> DMESG-WARN (fi-byt-n2820)
                pass       -> DMESG-WARN (fi-kbl-7500u)
                pass       -> DMESG-WARN (fi-bxt-j4205)
                pass       -> DMESG-WARN (fi-hsw-4770r)
                pass       -> DMESG-WARN (fi-snb-2600)
                pass       -> DMESG-WARN (fi-skl-6700hq)
                pass       -> DMESG-WARN (fi-snb-2520m)
                pass       -> DMESG-WARN (fi-bxt-t5700)
                pass       -> DMESG-WARN (fi-skl-6700k)
                pass       -> DMESG-WARN (fi-ivb-3770)
                pass       -> DMESG-WARN (fi-bdw-5557u)
                pass       -> DMESG-WARN (fi-ivb-3520m)
                pass       -> DMESG-WARN (fi-hsw-4770)
                pass       -> DMESG-WARN (fi-bsw-n3050)
                pass       -> DMESG-WARN (fi-skl-6260u)
                pass       -> DMESG-WARN (fi-byt-j1900)
                pass       -> DMESG-WARN (fi-skl-6770hq)
Test drv_hangman:
        Subgroup error-state-basic:
                pass       -> DMESG-WARN (fi-byt-n2820)
                pass       -> DMESG-WARN (fi-kbl-7500u)
                pass       -> DMESG-WARN (fi-bxt-j4205)
                pass       -> DMESG-WARN (fi-hsw-4770r)
                pass       -> DMESG-WARN (fi-snb-2600)
                pass       -> DMESG-WARN (fi-skl-6700hq)
                pass       -> DMESG-WARN (fi-snb-2520m)
                pass       -> DMESG-WARN (fi-bxt-t5700)
                pass       -> DMESG-WARN (fi-skl-6700k)
                pass       -> DMESG-WARN (fi-ivb-3770)
                pass       -> DMESG-WARN (fi-bdw-5557u)
                pass       -> DMESG-WARN (fi-ivb-3520m)
                pass       -> DMESG-WARN (fi-hsw-4770)
                pass       -> DMESG-WARN (fi-bsw-n3050)
                pass       -> DMESG-WARN (fi-skl-6260u)
                pass       -> DMESG-WARN (fi-byt-j1900)
                pass       -> DMESG-WARN (fi-skl-6770hq)
Test drv_module_reload:
        Subgroup basic-reload:
                pass       -> DMESG-WARN (fi-byt-n2820)
WARNING: Long output truncated

8f5a13bb4605ce9d60e1f2cd2722c9e2854e6749 drm-tip: 2017y-01m-16d-09h-31m-14s UTC integration manifest
8b83b44 drm/i915: Remove i915_vma_create from VMA API
5a7ef64 drm/i915: Rename some warts in the VMA API

== Logs ==

For more details see: https://intel-gfx-ci.01.org/CI/Patchwork_3526/
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