1da177e4c3
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
107 lines
2 KiB
C
107 lines
2 KiB
C
#ifndef _MOTOROLA_PGALLOC_H
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#define _MOTOROLA_PGALLOC_H
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#include <asm/tlb.h>
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#include <asm/tlbflush.h>
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extern pmd_t *get_pointer_table(void);
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extern int free_pointer_table(pmd_t *);
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static inline pte_t *pte_alloc_one_kernel(struct mm_struct *mm, unsigned long address)
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{
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pte_t *pte;
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pte = (pte_t *)__get_free_page(GFP_KERNEL|__GFP_REPEAT|__GFP_ZERO);
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if (pte) {
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__flush_page_to_ram(pte);
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flush_tlb_kernel_page(pte);
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nocache_page(pte);
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}
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return pte;
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}
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static inline void pte_free_kernel(pte_t *pte)
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{
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cache_page(pte);
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free_page((unsigned long) pte);
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}
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static inline struct page *pte_alloc_one(struct mm_struct *mm, unsigned long address)
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{
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struct page *page = alloc_pages(GFP_KERNEL|__GFP_REPEAT|__GFP_ZERO, 0);
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pte_t *pte;
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if(!page)
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return NULL;
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pte = kmap(page);
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if (pte) {
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__flush_page_to_ram(pte);
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flush_tlb_kernel_page(pte);
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nocache_page(pte);
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}
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kunmap(pte);
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return page;
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}
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static inline void pte_free(struct page *page)
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{
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cache_page(kmap(page));
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kunmap(page);
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__free_page(page);
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}
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static inline void __pte_free_tlb(struct mmu_gather *tlb, struct page *page)
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{
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cache_page(kmap(page));
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kunmap(page);
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__free_page(page);
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}
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static inline pmd_t *pmd_alloc_one(struct mm_struct *mm, unsigned long address)
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{
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return get_pointer_table();
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}
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static inline int pmd_free(pmd_t *pmd)
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{
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return free_pointer_table(pmd);
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}
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static inline int __pmd_free_tlb(struct mmu_gather *tlb, pmd_t *pmd)
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{
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return free_pointer_table(pmd);
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}
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static inline void pgd_free(pgd_t *pgd)
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{
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pmd_free((pmd_t *)pgd);
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}
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static inline pgd_t *pgd_alloc(struct mm_struct *mm)
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{
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return (pgd_t *)get_pointer_table();
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}
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static inline void pmd_populate_kernel(struct mm_struct *mm, pmd_t *pmd, pte_t *pte)
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{
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pmd_set(pmd, pte);
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}
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static inline void pmd_populate(struct mm_struct *mm, pmd_t *pmd, struct page *page)
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{
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pmd_set(pmd, page_address(page));
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}
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static inline void pgd_populate(struct mm_struct *mm, pgd_t *pgd, pmd_t *pmd)
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{
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pgd_set(pgd, pmd);
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}
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#endif /* _MOTOROLA_PGALLOC_H */
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