#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)#define pmd_pgtable(pmd) pmd_page(pmd)#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)#define pmd_pgtable(pmd) pmd_page(pmd)#endif extern pte_t *pte_alloc_one_kernel(struct mm_struct *mm, unsigned long addr);extern pgtable_t 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, pgtable_t 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__ */