1da177e4c3
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
91 lines
2.2 KiB
C
91 lines
2.2 KiB
C
#ifndef _PPC64_PGALLOC_H
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#define _PPC64_PGALLOC_H
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#include <linux/mm.h>
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#include <linux/slab.h>
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#include <linux/cpumask.h>
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#include <linux/percpu.h>
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extern kmem_cache_t *zero_cache;
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/*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version
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* 2 of the License, or (at your option) any later version.
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*/
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static inline pgd_t *
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pgd_alloc(struct mm_struct *mm)
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{
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return kmem_cache_alloc(zero_cache, GFP_KERNEL);
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}
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static inline void
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pgd_free(pgd_t *pgd)
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{
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kmem_cache_free(zero_cache, pgd);
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}
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#define pgd_populate(MM, PGD, PMD) pgd_set(PGD, PMD)
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static inline pmd_t *
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pmd_alloc_one(struct mm_struct *mm, unsigned long addr)
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{
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return kmem_cache_alloc(zero_cache, GFP_KERNEL|__GFP_REPEAT);
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}
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static inline void
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pmd_free(pmd_t *pmd)
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{
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kmem_cache_free(zero_cache, pmd);
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}
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#define pmd_populate_kernel(mm, pmd, pte) pmd_set(pmd, pte)
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#define pmd_populate(mm, pmd, pte_page) \
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pmd_populate_kernel(mm, pmd, page_address(pte_page))
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static inline pte_t *pte_alloc_one_kernel(struct mm_struct *mm, unsigned long address)
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{
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return kmem_cache_alloc(zero_cache, GFP_KERNEL|__GFP_REPEAT);
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}
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static inline struct page *pte_alloc_one(struct mm_struct *mm, unsigned long address)
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{
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pte_t *pte = kmem_cache_alloc(zero_cache, GFP_KERNEL|__GFP_REPEAT);
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if (pte)
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return virt_to_page(pte);
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return NULL;
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}
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static inline void pte_free_kernel(pte_t *pte)
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{
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kmem_cache_free(zero_cache, pte);
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}
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static inline void pte_free(struct page *ptepage)
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{
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kmem_cache_free(zero_cache, page_address(ptepage));
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}
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struct pte_freelist_batch
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{
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struct rcu_head rcu;
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unsigned int index;
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struct page * pages[0];
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};
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#define PTE_FREELIST_SIZE ((PAGE_SIZE - sizeof(struct pte_freelist_batch)) / \
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sizeof(struct page *))
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extern void pte_free_now(struct page *ptepage);
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extern void pte_free_submit(struct pte_freelist_batch *batch);
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DECLARE_PER_CPU(struct pte_freelist_batch *, pte_freelist_cur);
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void __pte_free_tlb(struct mmu_gather *tlb, struct page *ptepage);
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#define __pmd_free_tlb(tlb, pmd) __pte_free_tlb(tlb, virt_to_page(pmd))
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#define check_pgt_cache() do { } while (0)
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#endif /* _PPC64_PGALLOC_H */
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