These changes are the raw update to linux-4.4.6-rt14. Kernel sources

are taken from kernel.org, and rt patch from the rt wiki download page.

During the rebasing, the following patch collided:

Force tick interrupt and get rid of softirq magic(I70131fb85).

Collisions have been removed because its logic was found on the
source already.

Change-Id: I7f57a4081d9deaa0d9ccfc41a6c8daccdee3b769
Signed-off-by: José Pekkarinen <jose.pekkarinen@nokia.com>

1 files changed, 46 insertions, 43 deletions

diff --git a/kernel/drivers/gpu/drm/radeon/radeon_vm.c b/kernel/drivers/gpu/drm/radeon/radeon_vm.c
index 9c3377ca1..3979632b9 100644
--- a/kernel/drivers/gpu/drm/radeon/radeon_vm.c
+++ b/kernel/drivers/gpu/drm/radeon/radeon_vm.c
@@ -331,7 +331,6 @@ struct radeon_bo_va *radeon_vm_bo_add(struct radeon_device *rdev,
 	bo_va->it.start = 0;
 	bo_va->it.last = 0;
 	bo_va->flags = 0;
-	bo_va->addr = 0;
 	bo_va->ref_count = 1;
 	INIT_LIST_HEAD(&bo_va->bo_list);
 	INIT_LIST_HEAD(&bo_va->vm_status);
@@ -456,15 +455,15 @@ int radeon_vm_bo_set_addr(struct radeon_device *rdev,
 
 	if (soffset) {
 		/* make sure object fit at this offset */
-		eoffset = soffset + size;
+		eoffset = soffset + size - 1;
 		if (soffset >= eoffset) {
 			r = -EINVAL;
 			goto error_unreserve;
 		}
 
 		last_pfn = eoffset / RADEON_GPU_PAGE_SIZE;
-		if (last_pfn > rdev->vm_manager.max_pfn) {
-			dev_err(rdev->dev, "va above limit (0x%08X > 0x%08X)\n",
+		if (last_pfn >= rdev->vm_manager.max_pfn) {
+			dev_err(rdev->dev, "va above limit (0x%08X >= 0x%08X)\n",
 				last_pfn, rdev->vm_manager.max_pfn);
 			r = -EINVAL;
 			goto error_unreserve;
@@ -479,7 +478,7 @@ int radeon_vm_bo_set_addr(struct radeon_device *rdev,
 	eoffset /= RADEON_GPU_PAGE_SIZE;
 	if (soffset || eoffset) {
 		struct interval_tree_node *it;
-		it = interval_tree_iter_first(&vm->va, soffset, eoffset - 1);
+		it = interval_tree_iter_first(&vm->va, soffset, eoffset);
 		if (it && it != &bo_va->it) {
 			struct radeon_bo_va *tmp;
 			tmp = container_of(it, struct radeon_bo_va, it);
@@ -494,40 +493,38 @@ int radeon_vm_bo_set_addr(struct radeon_device *rdev,
 	}
 
 	if (bo_va->it.start || bo_va->it.last) {
-		if (bo_va->addr) {
-			/* add a clone of the bo_va to clear the old address */
-			struct radeon_bo_va *tmp;
-			tmp = kzalloc(sizeof(struct radeon_bo_va), GFP_KERNEL);
-			if (!tmp) {
-				mutex_unlock(&vm->mutex);
-				r = -ENOMEM;
-				goto error_unreserve;
-			}
-			tmp->it.start = bo_va->it.start;
-			tmp->it.last = bo_va->it.last;
-			tmp->vm = vm;
-			tmp->addr = bo_va->addr;
-			tmp->bo = radeon_bo_ref(bo_va->bo);
-			spin_lock(&vm->status_lock);
-			list_add(&tmp->vm_status, &vm->freed);
-			spin_unlock(&vm->status_lock);
-
-			bo_va->addr = 0;
+		/* add a clone of the bo_va to clear the old address */
+		struct radeon_bo_va *tmp;
+		tmp = kzalloc(sizeof(struct radeon_bo_va), GFP_KERNEL);
+		if (!tmp) {
+			mutex_unlock(&vm->mutex);
+			r = -ENOMEM;
+			goto error_unreserve;
 		}
+		tmp->it.start = bo_va->it.start;
+		tmp->it.last = bo_va->it.last;
+		tmp->vm = vm;
+		tmp->bo = radeon_bo_ref(bo_va->bo);
 
 		interval_tree_remove(&bo_va->it, &vm->va);
+		spin_lock(&vm->status_lock);
 		bo_va->it.start = 0;
 		bo_va->it.last = 0;
+		list_del_init(&bo_va->vm_status);
+		list_add(&tmp->vm_status, &vm->freed);
+		spin_unlock(&vm->status_lock);
 	}
 
 	if (soffset || eoffset) {
+		spin_lock(&vm->status_lock);
 		bo_va->it.start = soffset;
-		bo_va->it.last = eoffset - 1;
+		bo_va->it.last = eoffset;
+		list_add(&bo_va->vm_status, &vm->cleared);
+		spin_unlock(&vm->status_lock);
 		interval_tree_insert(&bo_va->it, &vm->va);
 	}
 
 	bo_va->flags = flags;
-	bo_va->addr = 0;
 
 	soffset >>= radeon_vm_block_size;
 	eoffset >>= radeon_vm_block_size;
@@ -891,7 +888,7 @@ static void radeon_vm_fence_pts(struct radeon_vm *vm,
 	unsigned i;
 
 	start >>= radeon_vm_block_size;
-	end >>= radeon_vm_block_size;
+	end = (end - 1) >> radeon_vm_block_size;
 
 	for (i = start; i <= end; ++i)
 		radeon_bo_fence(vm->page_tables[i].bo, fence, true);
@@ -928,7 +925,16 @@ int radeon_vm_bo_update(struct radeon_device *rdev,
 	}
 
 	spin_lock(&vm->status_lock);
-	list_del_init(&bo_va->vm_status);
+	if (mem) {
+		if (list_empty(&bo_va->vm_status)) {
+			spin_unlock(&vm->status_lock);
+			return 0;
+		}
+		list_del_init(&bo_va->vm_status);
+	} else {
+		list_del(&bo_va->vm_status);
+		list_add(&bo_va->vm_status, &vm->cleared);
+	}
 	spin_unlock(&vm->status_lock);
 
 	bo_va->flags &= ~RADEON_VM_PAGE_VALID;
@@ -954,10 +960,6 @@ int radeon_vm_bo_update(struct radeon_device *rdev,
 		addr = 0;
 	}
 
-	if (addr == bo_va->addr)
-		return 0;
-	bo_va->addr = addr;
-
 	trace_radeon_vm_bo_update(bo_va);
 
 	nptes = bo_va->it.last - bo_va->it.start + 1;
@@ -1045,7 +1047,7 @@ int radeon_vm_clear_freed(struct radeon_device *rdev,
 			  struct radeon_vm *vm)
 {
 	struct radeon_bo_va *bo_va;
-	int r;
+	int r = 0;
 
 	spin_lock(&vm->status_lock);
 	while (!list_empty(&vm->freed)) {
@@ -1056,14 +1058,15 @@ int radeon_vm_clear_freed(struct radeon_device *rdev,
 		r = radeon_vm_bo_update(rdev, bo_va, NULL);
 		radeon_bo_unref(&bo_va->bo);
 		radeon_fence_unref(&bo_va->last_pt_update);
+		spin_lock(&vm->status_lock);
+		list_del(&bo_va->vm_status);
 		kfree(bo_va);
 		if (r)
-			return r;
+			break;
 
-		spin_lock(&vm->status_lock);
 	}
 	spin_unlock(&vm->status_lock);
-	return 0;
+	return r;
 
 }
 
@@ -1121,10 +1124,10 @@ void radeon_vm_bo_rmv(struct radeon_device *rdev,
 	mutex_lock(&vm->mutex);
 	if (bo_va->it.start || bo_va->it.last)
 		interval_tree_remove(&bo_va->it, &vm->va);
+
 	spin_lock(&vm->status_lock);
 	list_del(&bo_va->vm_status);
-
-	if (bo_va->addr) {
+	if (bo_va->it.start || bo_va->it.last) {
 		bo_va->bo = radeon_bo_ref(bo_va->bo);
 		list_add(&bo_va->vm_status, &vm->freed);
 	} else {
@@ -1151,12 +1154,11 @@ void radeon_vm_bo_invalidate(struct radeon_device *rdev,
 	struct radeon_bo_va *bo_va;
 
 	list_for_each_entry(bo_va, &bo->va, bo_list) {
-		if (bo_va->addr) {
-			spin_lock(&bo_va->vm->status_lock);
-			list_del(&bo_va->vm_status);
+		spin_lock(&bo_va->vm->status_lock);
+		if (list_empty(&bo_va->vm_status) &&
+		    (bo_va->it.start || bo_va->it.last))
 			list_add(&bo_va->vm_status, &bo_va->vm->invalidated);
-			spin_unlock(&bo_va->vm->status_lock);
-		}
+		spin_unlock(&bo_va->vm->status_lock);
 	}
 }
 
@@ -1186,6 +1188,7 @@ int radeon_vm_init(struct radeon_device *rdev, struct radeon_vm *vm)
 	spin_lock_init(&vm->status_lock);
 	INIT_LIST_HEAD(&vm->invalidated);
 	INIT_LIST_HEAD(&vm->freed);
+	INIT_LIST_HEAD(&vm->cleared);
 
 	pd_size = radeon_vm_directory_size(rdev);
 	pd_entries = radeon_vm_num_pdes(rdev);