#ifndef _PPC64_PGALLOC_H #define _PPC64_PGALLOC_H #include <linux/mm.h> #include <linux/slab.h> #include <linux/cpumask.h> #include <linux/percpu.h> extern kmem_cache_t *pgtable_cache[]; #define PTE_CACHE_NUM 0 #define PMD_CACHE_NUM 1 #define PUD_CACHE_NUM 1 #define PGD_CACHE_NUM 0 /* * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License * as published by the Free Software Foundation; either version * 2 of the License, or (at your option) any later version. */ static inline pgd_t *pgd_alloc(struct mm_struct *mm) { return kmem_cache_alloc(pgtable_cache[PGD_CACHE_NUM], GFP_KERNEL); } static inline void pgd_free(pgd_t *pgd) { kmem_cache_free(pgtable_cache[PGD_CACHE_NUM], pgd); } #define pgd_populate(MM, PGD, PUD) pgd_set(PGD, PUD) static inline pud_t *pud_alloc_one(struct mm_struct *mm, unsigned long addr) { return kmem_cache_alloc(pgtable_cache[PUD_CACHE_NUM], GFP_KERNEL|__GFP_REPEAT); } static inline void pud_free(pud_t *pud) { kmem_cache_free(pgtable_cache[PUD_CACHE_NUM], pud); } #define pud_populate(MM, PUD, PMD) pud_set(PUD, PMD) static inline pmd_t *pmd_alloc_one(struct mm_struct *mm, unsigned long addr) { return kmem_cache_alloc(pgtable_cache[PMD_CACHE_NUM], GFP_KERNEL|__GFP_REPEAT); } static inline void pmd_free(pmd_t *pmd) { kmem_cache_free(pgtable_cache[PMD_CACHE_NUM], pmd); } #define pmd_populate_kernel(mm, pmd, pte) pmd_set(pmd, pte) #define pmd_populate(mm, pmd, pte_page) \ pmd_populate_kernel(mm, pmd, page_address(pte_page)) static inline pte_t *pte_alloc_one_kernel(struct mm_struct *mm, unsigned long address) { return kmem_cache_alloc(pgtable_cache[PTE_CACHE_NUM], GFP_KERNEL|__GFP_REPEAT); } static inline struct page *pte_alloc_one(struct mm_struct *mm, unsigned long address) { return virt_to_page(pte_alloc_one_kernel(mm, address)); } static inline void pte_free_kernel(pte_t *pte) { kmem_cache_free(pgtable_cache[PTE_CACHE_NUM], pte); } static inline void pte_free(struct page *ptepage) { pte_free_kernel(page_address(ptepage)); } #define PGF_CACHENUM_MASK 0xf typedef struct pgtable_free { unsigned long val; } pgtable_free_t; static inline pgtable_free_t pgtable_free_cache(void *p, int cachenum, unsigned long mask) { BUG_ON(cachenum > PGF_CACHENUM_MASK); return (pgtable_free_t){.val = ((unsigned long) p & ~mask) | cachenum}; } static inline void pgtable_free(pgtable_free_t pgf) { void *p = (void *)(pgf.val & ~PGF_CACHENUM_MASK); int cachenum = pgf.val & PGF_CACHENUM_MASK; kmem_cache_free(pgtable_cache[cachenum], p); } void pgtable_free_tlb(struct mmu_gather *tlb, pgtable_free_t pgf); #define __pte_free_tlb(tlb, ptepage) \ pgtable_free_tlb(tlb, pgtable_free_cache(page_address(ptepage), \ PTE_CACHE_NUM, PTE_TABLE_SIZE-1)) #define __pmd_free_tlb(tlb, pmd) \ pgtable_free_tlb(tlb, pgtable_free_cache(pmd, \ PMD_CACHE_NUM, PMD_TABLE_SIZE-1)) #define __pud_free_tlb(tlb, pmd) \ pgtable_free_tlb(tlb, pgtable_free_cache(pud, \ PUD_CACHE_NUM, PUD_TABLE_SIZE-1)) #define check_pgt_cache() do { } while (0) #endif /* _PPC64_PGALLOC_H */