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-rw-r--r--common/recipes-kernel/linux/linux-amd/0011-drm-radeon-fix-VMID-use-tracking.patch71
1 files changed, 71 insertions, 0 deletions
diff --git a/common/recipes-kernel/linux/linux-amd/0011-drm-radeon-fix-VMID-use-tracking.patch b/common/recipes-kernel/linux/linux-amd/0011-drm-radeon-fix-VMID-use-tracking.patch
new file mode 100644
index 00000000..48343177
--- /dev/null
+++ b/common/recipes-kernel/linux/linux-amd/0011-drm-radeon-fix-VMID-use-tracking.patch
@@ -0,0 +1,71 @@
+From ee906e626e202a3fd97bbffd9377eead953eac2c Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?Christian=20K=C3=B6nig?= <christian.koenig@amd.com>
+Date: Sat, 14 Dec 2013 10:02:57 -0700
+Subject: [PATCH 11/60] drm/radeon: fix VMID use tracking
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+Otherwise we allocate a new VMID on nearly every submit.
+
+Signed-off-by: Christian König <christian.koenig@amd.com>
+---
+ drivers/gpu/drm/radeon/radeon.h | 2 ++
+ drivers/gpu/drm/radeon/radeon_gart.c | 8 +++++++-
+ 2 files changed, 9 insertions(+), 1 deletion(-)
+
+diff --git a/drivers/gpu/drm/radeon/radeon.h b/drivers/gpu/drm/radeon/radeon.h
+index f1ce3064..133e9ad 100644
+--- a/drivers/gpu/drm/radeon/radeon.h
++++ b/drivers/gpu/drm/radeon/radeon.h
+@@ -863,6 +863,8 @@ struct radeon_vm {
+ struct radeon_fence *fence;
+ /* last flush or NULL if we still need to flush */
+ struct radeon_fence *last_flush;
++ /* last use of vmid */
++ struct radeon_fence *last_id_use;
+ };
+
+ struct radeon_vm_manager {
+diff --git a/drivers/gpu/drm/radeon/radeon_gart.c b/drivers/gpu/drm/radeon/radeon_gart.c
+index f8d7b16..cdab083 100644
+--- a/drivers/gpu/drm/radeon/radeon_gart.c
++++ b/drivers/gpu/drm/radeon/radeon_gart.c
+@@ -688,7 +688,7 @@ struct radeon_fence *radeon_vm_grab_id(struct radeon_device *rdev,
+ unsigned i;
+
+ /* check if the id is still valid */
+- if (vm->fence && vm->fence == rdev->vm_manager.active[vm->id])
++ if (vm->last_id_use && vm->last_id_use == rdev->vm_manager.active[vm->id])
+ return NULL;
+
+ /* we definately need to flush */
+@@ -743,6 +743,9 @@ void radeon_vm_fence(struct radeon_device *rdev,
+
+ radeon_fence_unref(&vm->fence);
+ vm->fence = radeon_fence_ref(fence);
++
++ radeon_fence_unref(&vm->last_id_use);
++ vm->last_id_use = radeon_fence_ref(fence);
+ }
+
+ /**
+@@ -1246,6 +1249,8 @@ void radeon_vm_init(struct radeon_device *rdev, struct radeon_vm *vm)
+ {
+ vm->id = 0;
+ vm->fence = NULL;
++ vm->last_flush = NULL;
++ vm->last_id_use = NULL;
+ mutex_init(&vm->mutex);
+ INIT_LIST_HEAD(&vm->list);
+ INIT_LIST_HEAD(&vm->va);
+@@ -1284,5 +1289,6 @@ void radeon_vm_fini(struct radeon_device *rdev, struct radeon_vm *vm)
+ }
+ radeon_fence_unref(&vm->fence);
+ radeon_fence_unref(&vm->last_flush);
++ radeon_fence_unref(&vm->last_id_use);
+ mutex_unlock(&vm->mutex);
+ }
+--
+1.9.1
+