| /* |
| * Copyright (C) 2018 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| #pragma once |
| |
| #include <stdint.h> |
| |
| namespace cuttlefish { |
| |
| // Keep the full disk size a multiple of 64k, for crosvm's virtio_blk driver |
| constexpr int DISK_SIZE_SHIFT = 16; |
| |
| // Keep all partitions 4k aligned, for host performance reasons |
| constexpr int PARTITION_SIZE_SHIFT = 12; |
| |
| // Returns the smallest multiple of 2^align_log greater than or equal to val. |
| constexpr uint64_t AlignToPowerOf2(uint64_t val, uint8_t align_log) { |
| uint64_t align = 1ULL << align_log; |
| return ((val + (align - 1)) / align) * align; |
| } |
| |
| } // namespace cuttlefish |
