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From 38bf516c75b4ef0f5c716e05fa9baab7c52d6c39 Mon Sep 17 00:00:00 2001
From: Chunming Zhou <David1.Zhou@amd.com>
Date: Wed, 18 Nov 2015 11:17:39 +0800
Subject: [PATCH 0763/1050] drm/amdgpu: add mutex for ba_va->valids/invalids
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
Change-Id: If93f30574a7211b0a862e31fc1ad0ab74b29a4fd
Signed-off-by: Chunming Zhou <David1.Zhou@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
---
drivers/gpu/drm/amd/amdgpu/amdgpu.h | 1 +
drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c | 17 +++++++++++------
2 files changed, 12 insertions(+), 6 deletions(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu.h b/drivers/gpu/drm/amd/amdgpu/amdgpu.h
index bcda624..7b1e2c2 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu.h
@@ -499,6 +499,7 @@ struct amdgpu_bo_va_mapping {
/* bo virtual addresses in a specific vm */
struct amdgpu_bo_va {
+ struct mutex mutex;
/* protected by bo being reserved */
struct list_head bo_list;
struct fence *last_pt_update;
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
index 159ce54..d6904ef 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
@@ -922,8 +922,9 @@ int amdgpu_vm_clear_invalids(struct amdgpu_device *adev,
bo_va = list_first_entry(&vm->invalidated,
struct amdgpu_bo_va, vm_status);
spin_unlock(&vm->status_lock);
-
+ mutex_lock(&bo_va->mutex);
r = amdgpu_vm_bo_update(adev, bo_va, NULL);
+ mutex_unlock(&bo_va->mutex);
if (r)
return r;
@@ -967,7 +968,7 @@ struct amdgpu_bo_va *amdgpu_vm_bo_add(struct amdgpu_device *adev,
INIT_LIST_HEAD(&bo_va->valids);
INIT_LIST_HEAD(&bo_va->invalids);
INIT_LIST_HEAD(&bo_va->vm_status);
-
+ mutex_init(&bo_va->mutex);
list_add_tail(&bo_va->bo_list, &bo->va);
return bo_va;
@@ -1045,7 +1046,9 @@ int amdgpu_vm_bo_map(struct amdgpu_device *adev,
mapping->offset = offset;
mapping->flags = flags;
+ mutex_lock(&bo_va->mutex);
list_add(&mapping->list, &bo_va->invalids);
+ mutex_unlock(&bo_va->mutex);
spin_lock(&vm->it_lock);
interval_tree_insert(&mapping->it, &vm->va);
spin_unlock(&vm->it_lock);
@@ -1121,7 +1124,7 @@ int amdgpu_vm_bo_unmap(struct amdgpu_device *adev,
bool valid = true;
saddr /= AMDGPU_GPU_PAGE_SIZE;
-
+ mutex_lock(&bo_va->mutex);
list_for_each_entry(mapping, &bo_va->valids, list) {
if (mapping->it.start == saddr)
break;
@@ -1135,10 +1138,12 @@ int amdgpu_vm_bo_unmap(struct amdgpu_device *adev,
break;
}
- if (&mapping->list == &bo_va->invalids)
+ if (&mapping->list == &bo_va->invalids) {
+ mutex_unlock(&bo_va->mutex);
return -ENOENT;
+ }
}
-
+ mutex_unlock(&bo_va->mutex);
list_del(&mapping->list);
spin_lock(&vm->it_lock);
interval_tree_remove(&mapping->it, &vm->va);
@@ -1190,8 +1195,8 @@ void amdgpu_vm_bo_rmv(struct amdgpu_device *adev,
spin_unlock(&vm->it_lock);
kfree(mapping);
}
-
fence_put(bo_va->last_pt_update);
+ mutex_destroy(&bo_va->mutex);
kfree(bo_va);
}
--
1.9.1
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