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0632840dba
The last user of the flags parameter that used to pass SECTION_IS_EARLY was removed, so let's remove the parameter. Link: https://lore.kernel.org/20260921-b4-sparsemem_cleanups-v2-11-54d81d65e125@kernel.org Signed-off-by: David Hildenbrand (Arm) <david@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Acked-by: Oscar Salvador <osalvador@suse.de> Reviewed-by: Lorenzo Stoakes (ARM) <ljs@kernel.org> Reviewed-by: Mike Rapoport (Microsoft) <rppt@kernel.org> Cc: Liam R. Howlett <liam@infradead.org> Cc: Vlastimil Babka <vbabka@kernel.org> Cc: Suren Baghdasaryan <surenb@google.com> Cc: Michal Hocko <mhocko@suse.com> Cc: Kairui Song <kasong@tencent.com> Cc: Qi Zheng <qi.zheng@linux.dev> Cc: Shakeel Butt <shakeel.butt@linux.dev> Cc: Barry Song <baohua@kernel.org> Cc: Axel Rasmussen <axelrasmussen@google.com> Cc: Yuanchu Xie <yuanchu@google.com> Cc: Wei Xu <weixugc@google.com> Cc: Baoquan He <baoquan.he@linux.dev> Cc: Baolin Wang <baolin.wang@linux.alibaba.com> Cc: Brendan Jackman <brendan.jackman@linux.dev> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: Zi Yan <ziy@nvidia.com> Cc: Jan Kiszka <jan.kiszka@siemens.com> Cc: Kieran Bingham <kbingham@kernel.org> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Rafael J. Wysocki <rafael@kernel.org> Cc: Danilo Krummrich <dakr@kernel.org>
74 lines
2.0 KiB
C
74 lines
2.0 KiB
C
/* SPDX-License-Identifier: GPL-2.0-or-later */
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/*
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* sparse.h:
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*
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* mm/ internal sparse and sparse-vmemmap declarations
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*/
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#ifndef __MM_SPARSE_H
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#define __MM_SPARSE_H
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#include <linux/mmzone.h>
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#include <linux/vmemmap-optimization.h>
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/*
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* mm/sparse.c
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*/
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#ifdef CONFIG_SPARSEMEM
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void sparse_init(void);
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void sparse_sections_init(void);
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int sparse_index_init(unsigned long section_nr, int nid);
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static inline void sparse_init_one_section(struct mem_section *ms,
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unsigned long section_nr, struct page *mem_map,
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struct mem_section_usage *usage)
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{
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unsigned long coded_mem_map;
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BUILD_BUG_ON(SECTION_MAP_LAST_BIT > PFN_SECTION_SHIFT);
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VM_WARN_ON_ONCE(section_nr > __highest_used_section_nr);
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/*
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* We encode the start PFN of the section into the mem_map such that
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* page_to_pfn() on !CONFIG_SPARSEMEM_VMEMMAP can simply subtract it
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* from the page pointer to obtain the PFN.
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*/
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coded_mem_map = (unsigned long)(mem_map - section_nr_to_pfn(section_nr));
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VM_WARN_ON_ONCE(coded_mem_map & ~SECTION_MAP_MASK);
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ms->section_mem_map &= ~SECTION_MAP_MASK;
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ms->section_mem_map |= coded_mem_map | SECTION_HAS_MEM_MAP;
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ms->usage = usage;
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}
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static inline size_t mem_section_usage_size(void)
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{
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return struct_size_t(struct mem_section_usage, pageblock_flags,
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BITS_TO_LONGS(SECTION_BLOCKFLAGS_BITS));
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}
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static inline bool section_vmemmap_optimizable(const struct mem_section *ms)
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{
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return vmemmap_optimizable_order(section_compound_order(ms));
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}
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#else
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static inline void sparse_init(void) {}
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static inline void sparse_sections_init(void) {}
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#endif /* CONFIG_SPARSEMEM */
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/*
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* mm/sparse-vmemmap.c
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*/
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#ifdef CONFIG_SPARSEMEM_VMEMMAP
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void sparse_init_subsection_map(void);
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int section_nr_vmemmap_pages(unsigned long pfn, unsigned long nr_pages);
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#else
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static inline void sparse_init_subsection_map(void) {}
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static inline int section_nr_vmemmap_pages(unsigned long pfn, unsigned long nr_pages)
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{
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return DIV_ROUND_UP(nr_pages * sizeof(struct page), PAGE_SIZE);
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}
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#endif /* CONFIG_SPARSEMEM_VMEMMAP */
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#endif /* __MM_SPARSE_H */
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