From 9420f89db2dd611c5b436a13e13f74d65ecc3a6a Mon Sep 17 00:00:00 2001 From: "Mike Rapoport (IBM)" Date: Tue, 21 Mar 2023 19:05:02 +0200 Subject: mm: move most of core MM initialization to mm/mm_init.c The bulk of memory management initialization code is spread all over mm/page_alloc.c and makes navigating through page allocator functionality difficult. Move most of the functions marked __init and __meminit to mm/mm_init.c to make it better localized and allow some more spare room before mm/page_alloc.c reaches 10k lines. No functional changes. Link: https://lkml.kernel.org/r/20230321170513.2401534-4-rppt@kernel.org Signed-off-by: Mike Rapoport (IBM) Acked-by: David Hildenbrand Acked-by: Vlastimil Babka Cc: Doug Berger Cc: Matthew Wilcox (Oracle) Cc: Mel Gorman Cc: Michal Hocko Cc: Thomas Bogendoerfer Signed-off-by: Andrew Morton --- mm/internal.h | 38 +++++++++++++++++++++++++++++++++++++- 1 file changed, 37 insertions(+), 1 deletion(-) (limited to 'mm/internal.h') diff --git a/mm/internal.h b/mm/internal.h index 2a7ffd9962c4..22f1410a0ee3 100644 --- a/mm/internal.h +++ b/mm/internal.h @@ -202,6 +202,8 @@ pmd_t *mm_find_pmd(struct mm_struct *mm, unsigned long address); * in mm/page_alloc.c */ +extern char * const zone_names[MAX_NR_ZONES]; + /* * Structure for holding the mostly immutable allocation parameters passed * between functions involved in allocations, including the alloc_pages* @@ -366,7 +368,29 @@ extern void __putback_isolated_page(struct page *page, unsigned int order, extern void memblock_free_pages(struct page *page, unsigned long pfn, unsigned int order); extern void __free_pages_core(struct page *page, unsigned int order); + +static inline void prep_compound_head(struct page *page, unsigned int order) +{ + struct folio *folio = (struct folio *)page; + + set_compound_page_dtor(page, COMPOUND_PAGE_DTOR); + set_compound_order(page, order); + atomic_set(&folio->_entire_mapcount, -1); + atomic_set(&folio->_nr_pages_mapped, 0); + atomic_set(&folio->_pincount, 0); +} + +static inline void prep_compound_tail(struct page *head, int tail_idx) +{ + struct page *p = head + tail_idx; + + p->mapping = TAIL_MAPPING; + set_compound_head(p, head); + set_page_private(p, 0); +} + extern void prep_compound_page(struct page *page, unsigned int order); + extern void post_alloc_hook(struct page *page, unsigned int order, gfp_t gfp_flags); extern int user_min_free_kbytes; @@ -377,6 +401,7 @@ extern void free_unref_page_list(struct list_head *list); extern void zone_pcp_reset(struct zone *zone); extern void zone_pcp_disable(struct zone *zone); extern void zone_pcp_enable(struct zone *zone); +extern void zone_pcp_init(struct zone *zone); extern void *memmap_alloc(phys_addr_t size, phys_addr_t align, phys_addr_t min_addr, @@ -474,7 +499,12 @@ isolate_migratepages_range(struct compact_control *cc, int __alloc_contig_migrate_range(struct compact_control *cc, unsigned long start, unsigned long end); -#endif + +/* Free whole pageblock and set its migration type to MIGRATE_CMA. */ +void init_cma_reserved_pageblock(struct page *page); + +#endif /* CONFIG_COMPACTION || CONFIG_CMA */ + int find_suitable_fallback(struct free_area *area, unsigned int order, int migratetype, bool only_stealable, bool *can_steal); @@ -658,6 +688,12 @@ static inline void vunmap_range_noflush(unsigned long start, unsigned long end) #endif /* !CONFIG_MMU */ /* Memory initialisation debug and verification */ +#ifdef CONFIG_DEFERRED_STRUCT_PAGE_INIT +DECLARE_STATIC_KEY_TRUE(deferred_pages); + +bool __init deferred_grow_zone(struct zone *zone, unsigned int order); +#endif /* CONFIG_DEFERRED_STRUCT_PAGE_INIT */ + enum mminit_level { MMINIT_WARNING, MMINIT_VERIFY, -- cgit v1.2.3-70-g09d2