1 files changed, 102 insertions, 48 deletions

diff --git a/drivers/gpu/drm/msm/msm_gem.c b/drivers/gpu/drm/msm/msm_gem.c
index c2fb98a94bc3..db6c4e281d75 100644
--- a/drivers/gpu/drm/msm/msm_gem.c
+++ b/drivers/gpu/drm/msm/msm_gem.c
@@ -19,8 +19,6 @@
 #include "msm_gpu.h"
 #include "msm_mmu.h"
 
-static void update_lru(struct drm_gem_object *obj);
-
 static dma_addr_t physaddr(struct drm_gem_object *obj)
 {
 	struct msm_gem_object *msm_obj = to_msm_bo(obj);
@@ -63,6 +61,49 @@ static void sync_for_cpu(struct msm_gem_object *msm_obj)
 	dma_unmap_sgtable(dev, msm_obj->sgt, DMA_BIDIRECTIONAL, 0);
 }
 
+static void update_lru_active(struct drm_gem_object *obj)
+{
+	struct msm_drm_private *priv = obj->dev->dev_private;
+	struct msm_gem_object *msm_obj = to_msm_bo(obj);
+
+	GEM_WARN_ON(!msm_obj->pages);
+
+	if (msm_obj->pin_count) {
+		drm_gem_lru_move_tail_locked(&priv->lru.pinned, obj);
+	} else if (msm_obj->madv == MSM_MADV_WILLNEED) {
+		drm_gem_lru_move_tail_locked(&priv->lru.willneed, obj);
+	} else {
+		GEM_WARN_ON(msm_obj->madv != MSM_MADV_DONTNEED);
+
+		drm_gem_lru_move_tail_locked(&priv->lru.dontneed, obj);
+	}
+}
+
+static void update_lru_locked(struct drm_gem_object *obj)
+{
+	struct msm_drm_private *priv = obj->dev->dev_private;
+	struct msm_gem_object *msm_obj = to_msm_bo(obj);
+
+	msm_gem_assert_locked(&msm_obj->base);
+
+	if (!msm_obj->pages) {
+		GEM_WARN_ON(msm_obj->pin_count);
+
+		drm_gem_lru_move_tail_locked(&priv->lru.unbacked, obj);
+	} else {
+		update_lru_active(obj);
+	}
+}
+
+static void update_lru(struct drm_gem_object *obj)
+{
+	struct msm_drm_private *priv = obj->dev->dev_private;
+
+	mutex_lock(&priv->lru.lock);
+	update_lru_locked(obj);
+	mutex_unlock(&priv->lru.lock);
+}
+
 /* allocate pages from VRAM carveout, used when no IOMMU: */
 static struct page **get_pages_vram(struct drm_gem_object *obj, int npages)
 {
@@ -180,6 +221,7 @@ static void put_pages(struct drm_gem_object *obj)
 
 static struct page **msm_gem_pin_pages_locked(struct drm_gem_object *obj)
 {
+	struct msm_drm_private *priv = obj->dev->dev_private;
 	struct msm_gem_object *msm_obj = to_msm_bo(obj);
 	struct page **p;
 
@@ -190,10 +232,13 @@ static struct page **msm_gem_pin_pages_locked(struct drm_gem_object *obj)
 	}
 
 	p = get_pages(obj);
-	if (!IS_ERR(p)) {
-		to_msm_bo(obj)->pin_count++;
-		update_lru(obj);
-	}
+	if (IS_ERR(p))
+		return p;
+
+	mutex_lock(&priv->lru.lock);
+	msm_obj->pin_count++;
+	update_lru_locked(obj);
+	mutex_unlock(&priv->lru.lock);
 
 	return p;
 }
@@ -309,12 +354,10 @@ static struct msm_gem_vma *add_vma(struct drm_gem_object *obj,
 
 	msm_gem_assert_locked(obj);
 
-	vma = kzalloc(sizeof(*vma), GFP_KERNEL);
+	vma = msm_gem_vma_new(aspace);
 	if (!vma)
 		return ERR_PTR(-ENOMEM);
 
-	vma->aspace = aspace;
-
 	list_add_tail(&vma->list, &msm_obj->vmas);
 
 	return vma;
@@ -361,9 +404,9 @@ put_iova_spaces(struct drm_gem_object *obj, bool close)
 
 	list_for_each_entry(vma, &msm_obj->vmas, list) {
 		if (vma->aspace) {
-			msm_gem_purge_vma(vma->aspace, vma);
+			msm_gem_vma_purge(vma);
 			if (close)
-				msm_gem_close_vma(vma->aspace, vma);
+				msm_gem_vma_close(vma);
 		}
 	}
 }
@@ -399,7 +442,7 @@ static struct msm_gem_vma *get_vma_locked(struct drm_gem_object *obj,
 		if (IS_ERR(vma))
 			return vma;
 
-		ret = msm_gem_init_vma(aspace, vma, obj->size,
+		ret = msm_gem_vma_init(vma, obj->size,
 			range_start, range_end);
 		if (ret) {
 			del_vma(vma);
@@ -437,7 +480,7 @@ int msm_gem_pin_vma_locked(struct drm_gem_object *obj, struct msm_gem_vma *vma)
 	if (IS_ERR(pages))
 		return PTR_ERR(pages);
 
-	ret = msm_gem_map_vma(vma->aspace, vma, prot, msm_obj->sgt, obj->size);
+	ret = msm_gem_vma_map(vma, prot, msm_obj->sgt, obj->size);
 	if (ret)
 		msm_gem_unpin_locked(obj);
 
@@ -446,14 +489,34 @@ int msm_gem_pin_vma_locked(struct drm_gem_object *obj, struct msm_gem_vma *vma)
 
 void msm_gem_unpin_locked(struct drm_gem_object *obj)
 {
+	struct msm_drm_private *priv = obj->dev->dev_private;
 	struct msm_gem_object *msm_obj = to_msm_bo(obj);
 
 	msm_gem_assert_locked(obj);
 
+	mutex_lock(&priv->lru.lock);
 	msm_obj->pin_count--;
 	GEM_WARN_ON(msm_obj->pin_count < 0);
+	update_lru_locked(obj);
+	mutex_unlock(&priv->lru.lock);
+}
 
-	update_lru(obj);
+/* Special unpin path for use in fence-signaling path, avoiding the need
+ * to hold the obj lock by only depending on things that a protected by
+ * the LRU lock.  In particular we know that that we already have backing
+ * and and that the object's dma_resv has the fence for the current
+ * submit/job which will prevent us racing against page eviction.
+ */
+void msm_gem_unpin_active(struct drm_gem_object *obj)
+{
+	struct msm_drm_private *priv = obj->dev->dev_private;
+	struct msm_gem_object *msm_obj = to_msm_bo(obj);
+
+	mutex_lock(&priv->lru.lock);
+	msm_obj->pin_count--;
+	GEM_WARN_ON(msm_obj->pin_count < 0);
+	update_lru_active(obj);
+	mutex_unlock(&priv->lru.lock);
 }
 
 struct msm_gem_vma *msm_gem_get_vma_locked(struct drm_gem_object *obj,
@@ -539,8 +602,8 @@ static int clear_iova(struct drm_gem_object *obj,
 	if (msm_gem_vma_inuse(vma))
 		return -EBUSY;
 
-	msm_gem_purge_vma(vma->aspace, vma);
-	msm_gem_close_vma(vma->aspace, vma);
+	msm_gem_vma_purge(vma);
+	msm_gem_vma_close(vma);
 	del_vma(vma);
 
 	return 0;
@@ -589,7 +652,7 @@ void msm_gem_unpin_iova(struct drm_gem_object *obj,
 	msm_gem_lock(obj);
 	vma = lookup_vma(obj, aspace);
 	if (!GEM_WARN_ON(!vma)) {
-		msm_gem_unpin_vma(vma);
+		msm_gem_vma_unpin(vma);
 		msm_gem_unpin_locked(obj);
 	}
 	msm_gem_unlock(obj);
@@ -628,6 +691,7 @@ fail:
 static void *get_vaddr(struct drm_gem_object *obj, unsigned madv)
 {
 	struct msm_gem_object *msm_obj = to_msm_bo(obj);
+	struct page **pages;
 	int ret = 0;
 
 	msm_gem_assert_locked(obj);
@@ -641,6 +705,10 @@ static void *get_vaddr(struct drm_gem_object *obj, unsigned madv)
 		return ERR_PTR(-EBUSY);
 	}
 
+	pages = msm_gem_pin_pages_locked(obj);
+	if (IS_ERR(pages))
+		return ERR_CAST(pages);
+
 	/* increment vmap_count *before* vmap() call, so shrinker can
 	 * check vmap_count (is_vunmapable()) outside of msm_obj lock.
 	 * This guarantees that we won't try to msm_gem_vunmap() this
@@ -650,25 +718,19 @@ static void *get_vaddr(struct drm_gem_object *obj, unsigned madv)
 	msm_obj->vmap_count++;
 
 	if (!msm_obj->vaddr) {
-		struct page **pages = get_pages(obj);
-		if (IS_ERR(pages)) {
-			ret = PTR_ERR(pages);
-			goto fail;
-		}
 		msm_obj->vaddr = vmap(pages, obj->size >> PAGE_SHIFT,
 				VM_MAP, msm_gem_pgprot(msm_obj, PAGE_KERNEL));
 		if (msm_obj->vaddr == NULL) {
 			ret = -ENOMEM;
 			goto fail;
 		}
-
-		update_lru(obj);
 	}
 
 	return msm_obj->vaddr;
 
 fail:
 	msm_obj->vmap_count--;
+	msm_gem_unpin_locked(obj);
 	return ERR_PTR(ret);
 }
 
@@ -707,6 +769,7 @@ void msm_gem_put_vaddr_locked(struct drm_gem_object *obj)
 	GEM_WARN_ON(msm_obj->vmap_count < 1);
 
 	msm_obj->vmap_count--;
+	msm_gem_unpin_locked(obj);
 }
 
 void msm_gem_put_vaddr(struct drm_gem_object *obj)
@@ -721,10 +784,13 @@ void msm_gem_put_vaddr(struct drm_gem_object *obj)
  */
 int msm_gem_madvise(struct drm_gem_object *obj, unsigned madv)
 {
+	struct msm_drm_private *priv = obj->dev->dev_private;
 	struct msm_gem_object *msm_obj = to_msm_bo(obj);
 
 	msm_gem_lock(obj);
 
+	mutex_lock(&priv->lru.lock);
+
 	if (msm_obj->madv != __MSM_MADV_PURGED)
 		msm_obj->madv = madv;
 
@@ -733,7 +799,9 @@ int msm_gem_madvise(struct drm_gem_object *obj, unsigned madv)
 	/* If the obj is inactive, we might need to move it
 	 * between inactive lists
 	 */
-	update_lru(obj);
+	update_lru_locked(obj);
+
+	mutex_unlock(&priv->lru.lock);
 
 	msm_gem_unlock(obj);
 
@@ -743,6 +811,7 @@ int msm_gem_madvise(struct drm_gem_object *obj, unsigned madv)
 void msm_gem_purge(struct drm_gem_object *obj)
 {
 	struct drm_device *dev = obj->dev;
+	struct msm_drm_private *priv = obj->dev->dev_private;
 	struct msm_gem_object *msm_obj = to_msm_bo(obj);
 
 	msm_gem_assert_locked(obj);
@@ -759,7 +828,10 @@ void msm_gem_purge(struct drm_gem_object *obj)
 
 	put_iova_vmas(obj);
 
+	mutex_lock(&priv->lru.lock);
+	/* A one-way transition: */
 	msm_obj->madv = __MSM_MADV_PURGED;
+	mutex_unlock(&priv->lru.lock);
 
 	drm_gem_free_mmap_offset(obj);
 
@@ -806,29 +878,6 @@ void msm_gem_vunmap(struct drm_gem_object *obj)
 	msm_obj->vaddr = NULL;
 }
 
-static void update_lru(struct drm_gem_object *obj)
-{
-	struct msm_drm_private *priv = obj->dev->dev_private;
-	struct msm_gem_object *msm_obj = to_msm_bo(obj);
-
-	msm_gem_assert_locked(&msm_obj->base);
-
-	if (!msm_obj->pages) {
-		GEM_WARN_ON(msm_obj->pin_count);
-		GEM_WARN_ON(msm_obj->vmap_count);
-
-		drm_gem_lru_move_tail(&priv->lru.unbacked, obj);
-	} else if (msm_obj->pin_count || msm_obj->vmap_count) {
-		drm_gem_lru_move_tail(&priv->lru.pinned, obj);
-	} else if (msm_obj->madv == MSM_MADV_WILLNEED) {
-		drm_gem_lru_move_tail(&priv->lru.willneed, obj);
-	} else {
-		GEM_WARN_ON(msm_obj->madv != MSM_MADV_DONTNEED);
-
-		drm_gem_lru_move_tail(&priv->lru.dontneed, obj);
-	}
-}
-
 bool msm_gem_active(struct drm_gem_object *obj)
 {
 	msm_gem_assert_locked(obj);
@@ -846,6 +895,11 @@ int msm_gem_cpu_prep(struct drm_gem_object *obj, uint32_t op, ktime_t *timeout)
 		op & MSM_PREP_NOSYNC ? 0 : timeout_to_jiffies(timeout);
 	long ret;
 
+	if (op & MSM_PREP_BOOST) {
+		dma_resv_set_deadline(obj->resv, dma_resv_usage_rw(write),
+				      ktime_get());
+	}
+
 	ret = dma_resv_wait_timeout(obj->resv, dma_resv_usage_rw(write),
 				    true,  remain);
 	if (ret == 0)