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From 7f3e7b0ea58ae3b4189b61dbf9c468929ef861d4 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Christian=20K=C3=B6nig?= <christian.koenig@amd.com>
Date: Tue, 8 Mar 2016 18:03:27 +0100
Subject: [PATCH 0381/1110] drm/amdgpu: Revert "add mutex for
ba_va->valids/invalids"
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
Not needed any more because we need to protect the elements on the list anyway.
This reverts commit 38bf516c75b4ef0f5c716e05fa9baab7c52d6c39.
Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Chunming Zhou <david1.zhou@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
---
drivers/gpu/drm/amd/amdgpu/amdgpu.h | 1 -
drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c | 17 ++++++-----------
2 files changed, 6 insertions(+), 12 deletions(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu.h b/drivers/gpu/drm/amd/amdgpu/amdgpu.h
index 929bf7f..7fc816a 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu.h
@@ -445,7 +445,6 @@ 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 f6d7d3f..e2effcf 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
@@ -1014,9 +1014,8 @@ 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;
@@ -1060,7 +1059,7 @@ 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;
@@ -1136,9 +1135,7 @@ 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);
interval_tree_insert(&mapping->it, &vm->va);
/* Make sure the page tables are allocated */
@@ -1220,7 +1217,7 @@ 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;
@@ -1234,12 +1231,10 @@ int amdgpu_vm_bo_unmap(struct amdgpu_device *adev,
break;
}
- if (&mapping->list == &bo_va->invalids) {
- mutex_unlock(&bo_va->mutex);
+ if (&mapping->list == &bo_va->invalids)
return -ENOENT;
- }
}
- mutex_unlock(&bo_va->mutex);
+
list_del(&mapping->list);
interval_tree_remove(&mapping->it, &vm->va);
trace_amdgpu_vm_bo_unmap(bo_va, mapping);
@@ -1285,8 +1280,8 @@ void amdgpu_vm_bo_rmv(struct amdgpu_device *adev,
interval_tree_remove(&mapping->it, &vm->va);
kfree(mapping);
}
+
fence_put(bo_va->last_pt_update);
- mutex_destroy(&bo_va->mutex);
kfree(bo_va);
}
--
2.7.4
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