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From 6863e41d9fcd67a8b91775a459fb92d54b98089b Mon Sep 17 00:00:00 2001
From: Chunming Zhou <David1.Zhou@amd.com>
Date: Thu, 17 Mar 2016 11:41:37 +0800
Subject: [PATCH 0442/1110] drm/amdgpu: improve vmid assigment V2
V2: the signaled items on the LRU maintain their order
Signed-off-by: Chunming Zhou <David1.Zhou@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c | 14 ++++++++++++++
1 file changed, 14 insertions(+)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
index e2effcf..ac4e092 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
@@ -223,6 +223,20 @@ int amdgpu_vm_grab_id(struct amdgpu_vm *vm, struct amdgpu_ring *ring,
struct amdgpu_vm_manager_id,
list);
+ if (id->mgr_id->active && !fence_is_signaled(id->mgr_id->active)) {
+ struct amdgpu_vm_manager_id *mgr_id, *tmp;
+ struct list_head *head = &adev->vm_manager.ids_lru;
+ list_for_each_entry_safe(mgr_id, tmp, &adev->vm_manager.ids_lru, list) {
+ if (mgr_id->active && fence_is_signaled(mgr_id->active)) {
+ list_move(&mgr_id->list, head);
+ head = &mgr_id->list;
+ }
+ }
+ id->mgr_id = list_first_entry(&adev->vm_manager.ids_lru,
+ struct amdgpu_vm_manager_id,
+ list);
+ }
+
r = amdgpu_sync_fence(ring->adev, sync, id->mgr_id->active);
if (!r) {
fence_put(id->mgr_id->active);
--
2.7.4
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