Linux kernel mirror (for testing)
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linux
1#ifndef _ASM_POWERPC_PGALLOC_32_H
2#define _ASM_POWERPC_PGALLOC_32_H
3
4#include <linux/threads.h>
5
6#define PTE_NONCACHE_NUM 0 /* dummy for now to share code w/ppc64 */
7
8extern void __bad_pte(pmd_t *pmd);
9
10extern pgd_t *pgd_alloc(struct mm_struct *mm);
11extern void pgd_free(struct mm_struct *mm, pgd_t *pgd);
12
13/*
14 * We don't have any real pmd's, and this code never triggers because
15 * the pgd will always be present..
16 */
17/* #define pmd_alloc_one(mm,address) ({ BUG(); ((pmd_t *)2); }) */
18#define pmd_free(mm, x) do { } while (0)
19#define __pmd_free_tlb(tlb,x) do { } while (0)
20/* #define pgd_populate(mm, pmd, pte) BUG() */
21
22#ifndef CONFIG_BOOKE
23#define pmd_populate_kernel(mm, pmd, pte) \
24 (pmd_val(*(pmd)) = __pa(pte) | _PMD_PRESENT)
25#define pmd_populate(mm, pmd, pte) \
26 (pmd_val(*(pmd)) = (page_to_pfn(pte) << PAGE_SHIFT) | _PMD_PRESENT)
27#define pmd_pgtable(pmd) pmd_page(pmd)
28#else
29#define pmd_populate_kernel(mm, pmd, pte) \
30 (pmd_val(*(pmd)) = (unsigned long)pte | _PMD_PRESENT)
31#define pmd_populate(mm, pmd, pte) \
32 (pmd_val(*(pmd)) = (unsigned long)lowmem_page_address(pte) | _PMD_PRESENT)
33#define pmd_pgtable(pmd) pmd_page(pmd)
34#endif
35
36extern pte_t *pte_alloc_one_kernel(struct mm_struct *mm, unsigned long addr);
37extern pgtable_t pte_alloc_one(struct mm_struct *mm, unsigned long addr);
38
39static inline void pgtable_free(pgtable_free_t pgf)
40{
41 void *p = (void *)(pgf.val & ~PGF_CACHENUM_MASK);
42
43 free_page((unsigned long)p);
44}
45
46#define check_pgt_cache() do { } while (0)
47
48#endif /* _ASM_POWERPC_PGALLOC_32_H */