linux/include/asm-ppc/pgalloc.h
Benjamin Herrenschmidt 5e5419734c add mm argument to pte/pmd/pud/pgd_free
(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>
2008-02-05 09:44:18 -08:00

44 lines
1.4 KiB
C

#ifdef __KERNEL__
#ifndef _PPC_PGALLOC_H
#define _PPC_PGALLOC_H
#include <linux/threads.h>
extern void __bad_pte(pmd_t *pmd);
extern pgd_t *pgd_alloc(struct mm_struct *mm);
extern void pgd_free(struct mm_struct *mm, pgd_t *pgd);
/*
* We don't have any real pmd's, and this code never triggers because
* the pgd will always be present..
*/
#define pmd_alloc_one(mm,address) ({ BUG(); ((pmd_t *)2); })
#define pmd_free(mm, x) do { } while (0)
#define __pmd_free_tlb(tlb,x) do { } while (0)
#define pgd_populate(mm, pmd, pte) BUG()
#ifndef CONFIG_BOOKE
#define pmd_populate_kernel(mm, pmd, pte) \
(pmd_val(*(pmd)) = __pa(pte) | _PMD_PRESENT)
#define pmd_populate(mm, pmd, pte) \
(pmd_val(*(pmd)) = (page_to_pfn(pte) << PAGE_SHIFT) | _PMD_PRESENT)
#else
#define pmd_populate_kernel(mm, pmd, pte) \
(pmd_val(*(pmd)) = (unsigned long)pte | _PMD_PRESENT)
#define pmd_populate(mm, pmd, pte) \
(pmd_val(*(pmd)) = (unsigned long)lowmem_page_address(pte) | _PMD_PRESENT)
#endif
extern pte_t *pte_alloc_one_kernel(struct mm_struct *mm, unsigned long addr);
extern struct page *pte_alloc_one(struct mm_struct *mm, unsigned long addr);
extern void pte_free_kernel(struct mm_struct *mm, pte_t *pte);
extern void pte_free(struct mm_struct *mm, struct page *pte);
#define __pte_free_tlb(tlb, pte) pte_free((tlb)->mm, (pte))
#define check_pgt_cache() do { } while (0)
#endif /* _PPC_PGALLOC_H */
#endif /* __KERNEL__ */