From 646b90259842faa8341b076a3488a227927d84a2 Mon Sep 17 00:00:00 2001
From: Christian König <christian.koenig@amd.com>
Date: Mon, 10 Sep 2018 20:02:46 +0200
Subject: drm/amdgpu: use a single linked list for amdgpu_vm_bo_base
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
Instead of the double linked list. Gets the size of amdgpu_vm_pt down to
64 bytes again.
We could even reduce it down to 32 bytes, but that would require some
rather extreme hacks.
Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Chunming Zhou <david1.zhou@amd.com>
Acked-by: Felix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c | 38 ++++++++++++++++++++++------------
1 file changed, 25 insertions(+), 13 deletions(-)
(limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c')
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
index 234764ac58cf..a7f9aaa47c49 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
@@ -309,12 +309,13 @@ static void amdgpu_vm_bo_base_init(struct amdgpu_vm_bo_base *base,
{
base->vm = vm;
base->bo = bo;
- INIT_LIST_HEAD(&base->bo_list);
+ base->next = NULL;
INIT_LIST_HEAD(&base->vm_status);
if (!bo)
return;
- list_add_tail(&base->bo_list, &bo->va);
+ base->next = bo->vm_bo;
+ bo->vm_bo = base;
if (bo->tbo.resv != vm->root.base.bo->tbo.resv)
return;
@@ -352,7 +353,7 @@ static struct amdgpu_vm_pt *amdgpu_vm_pt_parent(struct amdgpu_vm_pt *pt)
if (!parent)
return NULL;
- return list_first_entry(&parent->va, struct amdgpu_vm_pt, base.bo_list);
+ return container_of(parent->vm_bo, struct amdgpu_vm_pt, base);
}
/**
@@ -954,7 +955,7 @@ static void amdgpu_vm_free_pts(struct amdgpu_device *adev,
for_each_amdgpu_vm_pt_dfs_safe(adev, vm, cursor, entry) {
if (entry->base.bo) {
- list_del(&entry->base.bo_list);
+ entry->base.bo->vm_bo = NULL;
list_del(&entry->base.vm_status);
amdgpu_bo_unref(&entry->base.bo->shadow);
amdgpu_bo_unref(&entry->base.bo);
@@ -1162,12 +1163,13 @@ int amdgpu_vm_flush(struct amdgpu_ring *ring, struct amdgpu_job *job, bool need_
struct amdgpu_bo_va *amdgpu_vm_bo_find(struct amdgpu_vm *vm,
struct amdgpu_bo *bo)
{
- struct amdgpu_bo_va *bo_va;
+ struct amdgpu_vm_bo_base *base;
- list_for_each_entry(bo_va, &bo->va, base.bo_list) {
- if (bo_va->base.vm == vm) {
- return bo_va;
- }
+ for (base = bo->vm_bo; base; base = base->next) {
+ if (base->vm != vm)
+ continue;
+
+ return container_of(base, struct amdgpu_bo_va, base);
}
return NULL;
}
@@ -2728,11 +2730,21 @@ void amdgpu_vm_bo_rmv(struct amdgpu_device *adev,
struct amdgpu_bo_va_mapping *mapping, *next;
struct amdgpu_bo *bo = bo_va->base.bo;
struct amdgpu_vm *vm = bo_va->base.vm;
+ struct amdgpu_vm_bo_base **base;
- if (bo && bo->tbo.resv == vm->root.base.bo->tbo.resv)
- vm->bulk_moveable = false;
+ if (bo) {
+ if (bo->tbo.resv == vm->root.base.bo->tbo.resv)
+ vm->bulk_moveable = false;
- list_del(&bo_va->base.bo_list);
+ for (base = &bo_va->base.bo->vm_bo; *base;
+ base = &(*base)->next) {
+ if (*base != &bo_va->base)
+ continue;
+
+ *base = bo_va->base.next;
+ break;
+ }
+ }
spin_lock(&vm->invalidated_lock);
list_del(&bo_va->base.vm_status);
@@ -2774,7 +2786,7 @@ void amdgpu_vm_bo_invalidate(struct amdgpu_device *adev,
if (bo->parent && bo->parent->shadow == bo)
bo = bo->parent;
- list_for_each_entry(bo_base, &bo->va, bo_list) {
+ for (bo_base = bo->vm_bo; bo_base; bo_base = bo_base->next) {
struct amdgpu_vm *vm = bo_base->vm;
if (evicted && bo->tbo.resv == vm->root.base.bo->tbo.resv) {
--
cgit