1 files changed, 75 insertions, 0 deletions
diff --git a/common/recipes-kernel/linux/files/0174-drm-amdgpu-move-VM-page-tables-to-the-LRU-end-on-CS-.patch b/common/recipes-kernel/linux/files/0174-drm-amdgpu-move-VM-page-tables-to-the-LRU-end-on-CS-.patch
new file mode 100644
index 00000000..545151cb
--- /dev/null
+++ b/common/recipes-kernel/linux/files/0174-drm-amdgpu-move-VM-page-tables-to-the-LRU-end-on-CS-.patch
@@ -0,0 +1,75 @@
+From e6460e3680517c987dd3a934c33324ff166f60bf Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?Christian=20K=C3=B6nig?= <christian.koenig@amd.com>
+Date: Fri, 10 Jun 2016 18:46:42 +0530
+Subject: [PATCH 0174/1110] drm/amdgpu: move VM page tables to the LRU end on
+ CS v2
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+This makes it less likely to run into an ENOMEM because
+VM page tables are evicted last.
+
+v2: move the BOs in the LRU tail after validation
+
+Signed-off-by: Christian König <christian.koenig@amd.com>
+Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
+Signed-off-by: kalyan alle <kalle@amd.com>
+---
+ drivers/gpu/drm/amd/amdgpu/amdgpu.h    |  2 ++
+ drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c | 26 ++++++++++++++++++++++++++
+ 2 files changed, 28 insertions(+)
+
+diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu.h b/drivers/gpu/drm/amd/amdgpu/amdgpu.h
+index 4084669..6edeba2 100644
+--- a/drivers/gpu/drm/amd/amdgpu/amdgpu.h
++++ b/drivers/gpu/drm/amd/amdgpu/amdgpu.h
+@@ -993,6 +993,8 @@ void amdgpu_vm_get_pd_bo(struct amdgpu_vm *vm,
+                          struct list_head *validated,
+                          struct amdgpu_bo_list_entry *entry);
+ void amdgpu_vm_get_pt_bos(struct amdgpu_vm *vm, struct list_head *duplicates);
++void amdgpu_vm_move_pt_bos_in_lru(struct amdgpu_device *adev,
++                                  struct amdgpu_vm *vm);
+ int amdgpu_vm_grab_id(struct amdgpu_vm *vm, struct amdgpu_ring *ring,
+ 		      struct amdgpu_sync *sync);
+ void amdgpu_vm_flush(struct amdgpu_ring *ring,
+diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
+index e83d4f1..d495db3 100644
+--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
++++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
+@@ -130,6 +130,32 @@ void amdgpu_vm_get_pt_bos(struct amdgpu_vm *vm, struct list_head *duplicates)
+ }
+ 
+ /**
++ * amdgpu_vm_move_pt_bos_in_lru - move the PT BOs to the LRU tail
++ *
++ * @adev: amdgpu device instance
++ * @vm: vm providing the BOs
++ *
++ * Move the PT BOs to the tail of the LRU.
++ */
++void amdgpu_vm_move_pt_bos_in_lru(struct amdgpu_device *adev,
++                                  struct amdgpu_vm *vm)
++{
++        struct ttm_bo_global *glob = adev->mman.bdev.glob;
++        unsigned i;
++ 
++        spin_lock(&glob->lru_lock);
++        for (i = 0; i <= vm->max_pde_used; ++i) {
++                struct amdgpu_bo_list_entry *entry = &vm->page_tables[i].entry;
++ 
++                if (!entry->robj)
++                        continue;
++ 
++                ttm_bo_move_to_lru_tail(&entry->robj->tbo);
++        }
++        spin_unlock(&glob->lru_lock);
++}
++
++/**
+  * amdgpu_vm_grab_id - allocate the next free VMID
+  *
+  * @vm: vm to allocate id for
+-- 
+2.7.4
+