| Sandeep Patil | 54d8721 | 2018-08-29 17:10:47 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2018 The Android Open Source Project |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | |
| 17 | #pragma once |
| 18 | |
| 19 | #include <sys/types.h> |
| 20 | #include <unistd.h> |
| 21 | |
| 22 | #include <meminfo/meminfo.h> |
| 23 | #include <meminfo/pageacct.h> |
| 24 | #include <meminfo/procmeminfo.h> |
| 25 | #include <meminfo/sysmeminfo.h> |
| 26 | |
| 27 | // Macros to do per-page flag manipulation |
| 28 | #define _BITS(x, offset, bits) (((x) >> (offset)) & ((1LL << (bits)) - 1)) |
| 29 | #define PAGE_PRESENT(x) (_BITS(x, 63, 1)) |
| 30 | #define PAGE_SWAPPED(x) (_BITS(x, 62, 1)) |
| 31 | #define PAGE_SHIFT(x) (_BITS(x, 55, 6)) |
| 32 | #define PAGE_PFN(x) (_BITS(x, 0, 55)) |
| 33 | #define PAGE_SWAP_OFFSET(x) (_BITS(x, 5, 50)) |
| 34 | #define PAGE_SWAP_TYPE(x) (_BITS(x, 0, 5)) |