#ifndef _PPC64_PGALLOC_H#define _PPC64_PGALLOC_H #include <linux/mm.h>#include <linux/slab.h>#include <linux/cpumask.h>#include <linux/percpu.h>#include <asm/processor.h>#include <asm/tlb.h>#include <asm/page.h> extern kmem_cache_t *zero_cache; /* * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License * as published by the Free Software Foundation; either version * 2 of the License, or (at your option) any later version. */ static inline pgd_t *pgd_alloc(struct mm_struct *mm){	return kmem_cache_alloc(zero_cache, GFP_KERNEL);} static inline voidpgd_free(pgd_t *pgd){	kmem_cache_free(zero_cache, pgd);} #define pgd_populate(MM, PGD, PMD)	pgd_set(PGD, PMD) static inline pmd_t *pmd_alloc_one(struct mm_struct *mm, unsigned long addr){	return kmem_cache_alloc(zero_cache, GFP_KERNEL|__GFP_REPEAT);} static inline voidpmd_free(pmd_t *pmd){	kmem_cache_free(zero_cache, pmd);} #define pmd_populate_kernel(mm, pmd, pte) pmd_set(pmd, pte)#define pmd_populate(mm, pmd, pte_page) \	pmd_populate_kernel(mm, pmd, page_address(pte_page)) static inline pte_t *pte_alloc_one_kernel(struct mm_struct *mm, unsigned long address){	pte_t *pte;	pte = kmem_cache_alloc(zero_cache, GFP_KERNEL|__GFP_REPEAT);	if (pte) {		struct page *ptepage = virt_to_page(pte);		ptepage->mapping = (void *) mm;		ptepage->index = address & PMD_MASK;	}	return pte;} static inline struct page *pte_alloc_one(struct mm_struct *mm, unsigned long address){	pte_t *pte;	pte = kmem_cache_alloc(zero_cache, GFP_KERNEL|__GFP_REPEAT);	if (pte) {		struct page *ptepage = virt_to_page(pte);		ptepage->mapping = (void *) mm;		ptepage->index = address & PMD_MASK;		return ptepage;	}	return NULL;}		static inline void pte_free_kernel(pte_t *pte){	virt_to_page(pte)->mapping = NULL;	kmem_cache_free(zero_cache, pte);} static inline void pte_free(struct page *ptepage){	ptepage->mapping = NULL;	kmem_cache_free(zero_cache, page_address(ptepage));} struct pte_freelist_batch{	struct rcu_head	rcu;	unsigned int	index;	struct page *	pages[0];}; #define PTE_FREELIST_SIZE	((PAGE_SIZE - sizeof(struct pte_freelist_batch)) / \				  sizeof(struct page *)) extern void pte_free_now(struct page *ptepage);extern void pte_free_submit(struct pte_freelist_batch *batch); DECLARE_PER_CPU(struct pte_freelist_batch *, pte_freelist_cur); void __pte_free_tlb(struct mmu_gather *tlb, struct page *ptepage);#define __pmd_free_tlb(tlb, pmd)	__pte_free_tlb(tlb, virt_to_page(pmd)) #define check_pgt_cache()	do { } while (0) #endif /* _PPC64_PGALLOC_H */