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Linux/arch/sparc/include/asm/pgalloc_64.h

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  1 /* SPDX-License-Identifier: GPL-2.0 */
  2 #ifndef _SPARC64_PGALLOC_H
  3 #define _SPARC64_PGALLOC_H
  4 
  5 #include <linux/kernel.h>
  6 #include <linux/sched.h>
  7 #include <linux/mm.h>
  8 #include <linux/slab.h>
  9 
 10 #include <asm/spitfire.h>
 11 #include <asm/cpudata.h>
 12 #include <asm/cacheflush.h>
 13 #include <asm/page.h>
 14 
 15 /* Page table allocation/freeing. */
 16 
 17 extern struct kmem_cache *pgtable_cache;
 18 
 19 static inline void __p4d_populate(p4d_t *p4d, pud_t *pud)
 20 {
 21         p4d_set(p4d, pud);
 22 }
 23 
 24 #define p4d_populate(MM, P4D, PUD)      __p4d_populate(P4D, PUD)
 25 
 26 static inline pgd_t *pgd_alloc(struct mm_struct *mm)
 27 {
 28         return kmem_cache_alloc(pgtable_cache, GFP_KERNEL);
 29 }
 30 
 31 static inline void pgd_free(struct mm_struct *mm, pgd_t *pgd)
 32 {
 33         kmem_cache_free(pgtable_cache, pgd);
 34 }
 35 
 36 static inline void __pud_populate(pud_t *pud, pmd_t *pmd)
 37 {
 38         pud_set(pud, pmd);
 39 }
 40 
 41 #define pud_populate(MM, PUD, PMD)      __pud_populate(PUD, PMD)
 42 
 43 static inline pud_t *pud_alloc_one(struct mm_struct *mm, unsigned long addr)
 44 {
 45         return kmem_cache_alloc(pgtable_cache, GFP_KERNEL);
 46 }
 47 
 48 static inline void pud_free(struct mm_struct *mm, pud_t *pud)
 49 {
 50         kmem_cache_free(pgtable_cache, pud);
 51 }
 52 
 53 static inline pmd_t *pmd_alloc_one(struct mm_struct *mm, unsigned long addr)
 54 {
 55         return kmem_cache_alloc(pgtable_cache, GFP_KERNEL);
 56 }
 57 
 58 static inline void pmd_free(struct mm_struct *mm, pmd_t *pmd)
 59 {
 60         kmem_cache_free(pgtable_cache, pmd);
 61 }
 62 
 63 pte_t *pte_alloc_one_kernel(struct mm_struct *mm);
 64 pgtable_t pte_alloc_one(struct mm_struct *mm);
 65 void pte_free_kernel(struct mm_struct *mm, pte_t *pte);
 66 void pte_free(struct mm_struct *mm, pgtable_t ptepage);
 67 
 68 #define pmd_populate_kernel(MM, PMD, PTE)       pmd_set(MM, PMD, PTE)
 69 #define pmd_populate(MM, PMD, PTE)              pmd_set(MM, PMD, PTE)
 70 #define pmd_pgtable(PMD)                        ((pte_t *)__pmd_page(PMD))
 71 
 72 void pgtable_free(void *table, bool is_page);
 73 
 74 #ifdef CONFIG_SMP
 75 
 76 struct mmu_gather;
 77 void tlb_remove_table(struct mmu_gather *, void *);
 78 
 79 static inline void pgtable_free_tlb(struct mmu_gather *tlb, void *table, bool is_page)
 80 {
 81         unsigned long pgf = (unsigned long)table;
 82         if (is_page)
 83                 pgf |= 0x1UL;
 84         tlb_remove_table(tlb, (void *)pgf);
 85 }
 86 
 87 static inline void __tlb_remove_table(void *_table)
 88 {
 89         void *table = (void *)((unsigned long)_table & ~0x1UL);
 90         bool is_page = false;
 91 
 92         if ((unsigned long)_table & 0x1UL)
 93                 is_page = true;
 94         pgtable_free(table, is_page);
 95 }
 96 #else /* CONFIG_SMP */
 97 static inline void pgtable_free_tlb(struct mmu_gather *tlb, void *table, bool is_page)
 98 {
 99         pgtable_free(table, is_page);
100 }
101 #endif /* !CONFIG_SMP */
102 
103 static inline void __pte_free_tlb(struct mmu_gather *tlb, pte_t *pte,
104                                   unsigned long address)
105 {
106         pgtable_free_tlb(tlb, pte, true);
107 }
108 
109 #define __pmd_free_tlb(tlb, pmd, addr)                \
110         pgtable_free_tlb(tlb, pmd, false)
111 
112 #define __pud_free_tlb(tlb, pud, addr)                \
113         pgtable_free_tlb(tlb, pud, false)
114 
115 #endif /* _SPARC64_PGALLOC_H */
116 

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