From c7b9aa7a9220538d1a99c1c6f8d00b9b5e51b0f2 Mon Sep 17 00:00:00 2001 From: Nirmoy Das Date: Fri, 28 May 2021 12:32:16 +0200 Subject: [PATCH] drm/amdgpu: do not allocate entries separately MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit Allocate PD/PT entries while allocating VM BOs and use that instead of allocating those entries separately. v2: create a new var for num entries. Signed-off-by: Nirmoy Das Reviewed-by: Christian König Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c | 34 ++++++++++++++++++++-------------- 1 file changed, 20 insertions(+), 14 deletions(-) diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c index 223c633..c29fad9 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c @@ -876,6 +876,7 @@ static int amdgpu_vm_pt_create(struct amdgpu_device *adev, struct amdgpu_bo_param bp; struct amdgpu_bo *bo; struct dma_resv *resv; + unsigned int num_entries; int r; memset(&bp, 0, sizeof(bp)); @@ -886,7 +887,14 @@ static int amdgpu_vm_pt_create(struct amdgpu_device *adev, bp.domain = amdgpu_bo_get_preferred_pin_domain(adev, bp.domain); bp.flags = AMDGPU_GEM_CREATE_VRAM_CONTIGUOUS | AMDGPU_GEM_CREATE_CPU_GTT_USWC; - bp.bo_ptr_size = sizeof(struct amdgpu_bo_vm); + + if (level < AMDGPU_VM_PTB) + num_entries = amdgpu_vm_num_entries(adev, level); + else + num_entries = 0; + + bp.bo_ptr_size = struct_size((*vmbo), entries, num_entries); + if (vm->use_cpu_for_update) bp.flags |= AMDGPU_GEM_CREATE_CPU_ACCESS_REQUIRED; @@ -957,19 +965,14 @@ static int amdgpu_vm_alloc_pts(struct amdgpu_device *adev, struct amdgpu_bo_vm *pt; int r; - if (cursor->level < AMDGPU_VM_PTB && !entry->entries) { - unsigned num_entries; - - num_entries = amdgpu_vm_num_entries(adev, cursor->level); - entry->entries = kvmalloc_array(num_entries, - sizeof(*entry->entries), - GFP_KERNEL | __GFP_ZERO); - if (!entry->entries) - return -ENOMEM; - } - - if (entry->base.bo) + if (entry->base.bo) { + if (cursor->level < AMDGPU_VM_PTB) + entry->entries = + to_amdgpu_bo_vm(entry->base.bo)->entries; + else + entry->entries = NULL; return 0; + } r = amdgpu_vm_pt_create(adev, vm, cursor->level, immediate, &pt); if (r) @@ -981,6 +984,10 @@ static int amdgpu_vm_alloc_pts(struct amdgpu_device *adev, pt_bo = &pt->bo; pt_bo->parent = amdgpu_bo_ref(cursor->parent->base.bo); amdgpu_vm_bo_base_init(&entry->base, vm, pt_bo); + if (cursor->level < AMDGPU_VM_PTB) + entry->entries = pt->entries; + else + entry->entries = NULL; r = amdgpu_vm_clear_bo(adev, vm, pt, immediate); if (r) @@ -1010,7 +1017,6 @@ static void amdgpu_vm_free_table(struct amdgpu_vm_pt *entry) amdgpu_bo_unref(&shadow); amdgpu_bo_unref(&entry->base.bo); } - kvfree(entry->entries); entry->entries = NULL; } -- 2.7.4