From: Christian König Date: Mon, 10 Sep 2018 18:02:46 +0000 (+0200) Subject: drm/amdgpu: use a single linked list for amdgpu_vm_bo_base X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=646b90259842faa8341b076a3488a227927d84a2;p=openwrt%2Fstaging%2Fblogic.git drm/amdgpu: use a single linked list for amdgpu_vm_bo_base 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 Reviewed-by: Chunming Zhou Acked-by: Felix Kuehling Signed-off-by: Alex Deucher --- diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c index de990bdcdd6c..e6909252aefa 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c @@ -448,7 +448,7 @@ static int amdgpu_bo_do_create(struct amdgpu_device *adev, return -ENOMEM; drm_gem_private_object_init(adev->ddev, &bo->gem_base, size); INIT_LIST_HEAD(&bo->shadow_list); - INIT_LIST_HEAD(&bo->va); + bo->vm_bo = NULL; bo->preferred_domains = bp->preferred_domain ? bp->preferred_domain : bp->domain; bo->allowed_domains = bo->preferred_domains; diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.h index 907fdf46d895..64337ff2ad63 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.h +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.h @@ -89,8 +89,8 @@ struct amdgpu_bo { void *metadata; u32 metadata_size; unsigned prime_shared_count; - /* list of all virtual address to which this bo is associated to */ - struct list_head va; + /* per VM structure for page tables and with virtual addresses */ + struct amdgpu_vm_bo_base *vm_bo; /* Constant after initialization */ struct drm_gem_object gem_base; struct amdgpu_bo *parent; 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) { diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.h index 12d21eec4568..2a8898d19c8b 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.h +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.h @@ -129,7 +129,7 @@ struct amdgpu_vm_bo_base { struct amdgpu_bo *bo; /* protected by bo being reserved */ - struct list_head bo_list; + struct amdgpu_vm_bo_base *next; /* protected by spinlock */ struct list_head vm_status;