forked from luck/tmp_suning_uos_patched
5e5419734c
(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>
115 lines
2.6 KiB
C
115 lines
2.6 KiB
C
#ifndef _ASM_IA64_PGALLOC_H
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#define _ASM_IA64_PGALLOC_H
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/*
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* This file contains the functions and defines necessary to allocate
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* page tables.
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*
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* This hopefully works with any (fixed) ia-64 page-size, as defined
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* in <asm/page.h> (currently 8192).
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*
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* Copyright (C) 1998-2001 Hewlett-Packard Co
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* David Mosberger-Tang <davidm@hpl.hp.com>
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* Copyright (C) 2000, Goutham Rao <goutham.rao@intel.com>
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*/
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#include <linux/compiler.h>
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#include <linux/mm.h>
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#include <linux/page-flags.h>
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#include <linux/threads.h>
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#include <linux/quicklist.h>
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#include <asm/mmu_context.h>
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static inline pgd_t *pgd_alloc(struct mm_struct *mm)
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{
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return quicklist_alloc(0, GFP_KERNEL, NULL);
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}
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static inline void pgd_free(struct mm_struct *mm, pgd_t *pgd)
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{
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quicklist_free(0, NULL, pgd);
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}
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#ifdef CONFIG_PGTABLE_4
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static inline void
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pgd_populate(struct mm_struct *mm, pgd_t * pgd_entry, pud_t * pud)
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{
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pgd_val(*pgd_entry) = __pa(pud);
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}
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static inline pud_t *pud_alloc_one(struct mm_struct *mm, unsigned long addr)
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{
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return quicklist_alloc(0, GFP_KERNEL, NULL);
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}
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static inline void pud_free(struct mm_struct *mm, pud_t *pud)
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{
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quicklist_free(0, NULL, pud);
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}
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#define __pud_free_tlb(tlb, pud) pud_free((tlb)->mm, pud)
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#endif /* CONFIG_PGTABLE_4 */
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static inline void
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pud_populate(struct mm_struct *mm, pud_t * pud_entry, pmd_t * pmd)
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{
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pud_val(*pud_entry) = __pa(pmd);
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}
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static inline pmd_t *pmd_alloc_one(struct mm_struct *mm, unsigned long addr)
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{
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return quicklist_alloc(0, GFP_KERNEL, NULL);
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}
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static inline void pmd_free(struct mm_struct *mm, pmd_t *pmd)
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{
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quicklist_free(0, NULL, pmd);
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}
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#define __pmd_free_tlb(tlb, pmd) pmd_free((tlb)->mm, pmd)
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static inline void
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pmd_populate(struct mm_struct *mm, pmd_t * pmd_entry, struct page *pte)
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{
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pmd_val(*pmd_entry) = page_to_phys(pte);
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}
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static inline void
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pmd_populate_kernel(struct mm_struct *mm, pmd_t * pmd_entry, pte_t * pte)
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{
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pmd_val(*pmd_entry) = __pa(pte);
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}
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static inline struct page *pte_alloc_one(struct mm_struct *mm,
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unsigned long addr)
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{
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void *pg = quicklist_alloc(0, GFP_KERNEL, NULL);
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return pg ? virt_to_page(pg) : NULL;
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}
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static inline pte_t *pte_alloc_one_kernel(struct mm_struct *mm,
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unsigned long addr)
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{
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return quicklist_alloc(0, GFP_KERNEL, NULL);
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}
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static inline void pte_free(struct mm_struct *mm, struct page *pte)
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{
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quicklist_free_page(0, NULL, pte);
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}
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static inline void pte_free_kernel(struct mm_struct *mm, pte_t *pte)
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{
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quicklist_free(0, NULL, pte);
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}
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static inline void check_pgt_cache(void)
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{
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quicklist_trim(0, NULL, 25, 16);
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}
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#define __pte_free_tlb(tlb, pte) pte_free((tlb)->mm, pte)
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#endif /* _ASM_IA64_PGALLOC_H */
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