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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>
44 lines
1.4 KiB
C
44 lines
1.4 KiB
C
#ifdef __KERNEL__
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#ifndef _PPC_PGALLOC_H
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#define _PPC_PGALLOC_H
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#include <linux/threads.h>
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extern void __bad_pte(pmd_t *pmd);
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extern pgd_t *pgd_alloc(struct mm_struct *mm);
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extern void pgd_free(struct mm_struct *mm, pgd_t *pgd);
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/*
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* We don't have any real pmd's, and this code never triggers because
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* the pgd will always be present..
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*/
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#define pmd_alloc_one(mm,address) ({ 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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#ifndef CONFIG_BOOKE
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#define pmd_populate_kernel(mm, pmd, pte) \
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(pmd_val(*(pmd)) = __pa(pte) | _PMD_PRESENT)
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#define pmd_populate(mm, pmd, pte) \
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(pmd_val(*(pmd)) = (page_to_pfn(pte) << PAGE_SHIFT) | _PMD_PRESENT)
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#else
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#define pmd_populate_kernel(mm, pmd, pte) \
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(pmd_val(*(pmd)) = (unsigned long)pte | _PMD_PRESENT)
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#define pmd_populate(mm, pmd, pte) \
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(pmd_val(*(pmd)) = (unsigned long)lowmem_page_address(pte) | _PMD_PRESENT)
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#endif
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extern pte_t *pte_alloc_one_kernel(struct mm_struct *mm, unsigned long addr);
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extern struct page *pte_alloc_one(struct mm_struct *mm, unsigned long addr);
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extern void pte_free_kernel(struct mm_struct *mm, pte_t *pte);
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extern void pte_free(struct mm_struct *mm, struct page *pte);
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#define __pte_free_tlb(tlb, pte) pte_free((tlb)->mm, (pte))
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#define check_pgt_cache() do { } while (0)
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#endif /* _PPC_PGALLOC_H */
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#endif /* __KERNEL__ */
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