35 lines
1.1 KiB
C
35 lines
1.1 KiB
C
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/*
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* Copyright (C) 2018 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#pragma once
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#include <sys/types.h>
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#include <unistd.h>
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#include <meminfo/meminfo.h>
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#include <meminfo/pageacct.h>
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#include <meminfo/procmeminfo.h>
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#include <meminfo/sysmeminfo.h>
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// Macros to do per-page flag manipulation
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#define _BITS(x, offset, bits) (((x) >> (offset)) & ((1LL << (bits)) - 1))
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#define PAGE_PRESENT(x) (_BITS(x, 63, 1))
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#define PAGE_SWAPPED(x) (_BITS(x, 62, 1))
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#define PAGE_SHIFT(x) (_BITS(x, 55, 6))
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#define PAGE_PFN(x) (_BITS(x, 0, 55))
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#define PAGE_SWAP_OFFSET(x) (_BITS(x, 5, 50))
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#define PAGE_SWAP_TYPE(x) (_BITS(x, 0, 5))
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