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47010c040d
The word of "free" is not expressive enough to express the feature of optimizing vmemmap pages associated with each HugeTLB, rename this keywork to "optimize". In this patch , cheanup configs to make code more expressive. Link: https://lkml.kernel.org/r/20220404074652.68024-4-songmuchun@bytedance.com Signed-off-by: Muchun Song <songmuchun@bytedance.com> Cc: Mike Kravetz <mike.kravetz@oracle.com> Cc: David Hildenbrand <david@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
45 lines
1.2 KiB
C
45 lines
1.2 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* Optimize vmemmap pages associated with HugeTLB
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*
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* Copyright (c) 2020, Bytedance. All rights reserved.
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*
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* Author: Muchun Song <songmuchun@bytedance.com>
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*/
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#ifndef _LINUX_HUGETLB_VMEMMAP_H
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#define _LINUX_HUGETLB_VMEMMAP_H
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#include <linux/hugetlb.h>
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#ifdef CONFIG_HUGETLB_PAGE_OPTIMIZE_VMEMMAP
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int hugetlb_vmemmap_alloc(struct hstate *h, struct page *head);
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void hugetlb_vmemmap_free(struct hstate *h, struct page *head);
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void hugetlb_vmemmap_init(struct hstate *h);
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/*
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* How many vmemmap pages associated with a HugeTLB page that can be
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* optimized and freed to the buddy allocator.
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*/
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static inline unsigned int hugetlb_optimize_vmemmap_pages(struct hstate *h)
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{
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return h->optimize_vmemmap_pages;
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}
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#else
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static inline int hugetlb_vmemmap_alloc(struct hstate *h, struct page *head)
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{
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return 0;
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}
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static inline void hugetlb_vmemmap_free(struct hstate *h, struct page *head)
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{
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}
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static inline void hugetlb_vmemmap_init(struct hstate *h)
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{
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}
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static inline unsigned int hugetlb_optimize_vmemmap_pages(struct hstate *h)
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{
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return 0;
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}
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#endif /* CONFIG_HUGETLB_PAGE_OPTIMIZE_VMEMMAP */
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#endif /* _LINUX_HUGETLB_VMEMMAP_H */
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