5e5419734c
(with Martin Schwidefsky <schwidefsky@de.ibm.com>) The pgd/pud/pmd/pte page table allocation functions get a mm_struct pointer as first argument. The free functions do not get the mm_struct argument. This is 1) asymmetrical and 2) to do mm related page table allocations the mm argument is needed on the free function as well. [kamalesh@linux.vnet.ibm.com: i386 fix] [akpm@linux-foundation.org: coding-syle fixes] Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: <linux-arch@vger.kernel.org> Signed-off-by: Kamalesh Babulal <kamalesh@linux.vnet.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
75 lines
1.6 KiB
C
75 lines
1.6 KiB
C
#ifndef _ASM_M32R_PGALLOC_H
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#define _ASM_M32R_PGALLOC_H
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#include <linux/mm.h>
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#include <asm/io.h>
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#define pmd_populate_kernel(mm, pmd, pte) \
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set_pmd(pmd, __pmd(_PAGE_TABLE + __pa(pte)))
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static __inline__ void pmd_populate(struct mm_struct *mm, pmd_t *pmd,
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struct page *pte)
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{
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set_pmd(pmd, __pmd(_PAGE_TABLE + page_to_phys(pte)));
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}
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/*
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* Allocate and free page tables.
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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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pgd_t *pgd = (pgd_t *)__get_free_page(GFP_KERNEL|__GFP_ZERO);
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return pgd;
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}
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static inline void pgd_free(struct mm_struct *mm, pgd_t *pgd)
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{
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free_page((unsigned long)pgd);
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}
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static __inline__ pte_t *pte_alloc_one_kernel(struct mm_struct *mm,
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unsigned long address)
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{
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pte_t *pte = (pte_t *)__get_free_page(GFP_KERNEL|__GFP_ZERO);
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return pte;
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}
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static __inline__ struct page *pte_alloc_one(struct mm_struct *mm,
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unsigned long address)
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{
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struct page *pte = alloc_page(GFP_KERNEL|__GFP_ZERO);
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return pte;
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}
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static inline void pte_free_kernel(struct mm_struct *mm, pte_t *pte)
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{
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free_page((unsigned long)pte);
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}
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static inline void pte_free(struct mm_struct *mm, struct page *pte)
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{
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__free_page(pte);
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}
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#define __pte_free_tlb(tlb, pte) pte_free((tlb)->mm, (pte))
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/*
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* allocating and freeing a pmd is trivial: the 1-entry pmd is
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* inside the pgd, so has no extra memory associated with it.
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* (In the PAE case we free the pmds as part of the pgd.)
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*/
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#define pmd_alloc_one(mm, addr) ({ BUG(); ((pmd_t *)2); })
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#define pmd_free(mm, x) do { } while (0)
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#define __pmd_free_tlb(tlb, x) do { } while (0)
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#define pgd_populate(mm, pmd, pte) BUG()
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#define check_pgt_cache() do { } while (0)
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#endif /* _ASM_M32R_PGALLOC_H */
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