1 #ifndef _ASM_IA64_PGALLOC_H
2 #define _ASM_IA64_PGALLOC_H
5 * This file contains the functions and defines necessary to allocate
8 * This hopefully works with any (fixed) ia-64 page-size, as defined
9 * in <asm/page.h> (currently 8192).
11 * Copyright (C) 1998-2001 Hewlett-Packard Co
12 * David Mosberger-Tang <davidm@hpl.hp.com>
13 * Copyright (C) 2000, Goutham Rao <goutham.rao@intel.com>
17 #include <linux/compiler.h>
19 #include <linux/page-flags.h>
20 #include <linux/threads.h>
22 #include <asm/mmu_context.h>
24 DECLARE_PER_CPU(unsigned long *, __pgtable_quicklist
);
25 #define pgtable_quicklist __ia64_per_cpu_var(__pgtable_quicklist)
26 DECLARE_PER_CPU(long, __pgtable_quicklist_size
);
27 #define pgtable_quicklist_size __ia64_per_cpu_var(__pgtable_quicklist_size)
29 static inline long pgtable_quicklist_total_size(void)
34 for_each_online_cpu(cpuid
) {
35 ql_size
+= per_cpu(__pgtable_quicklist_size
, cpuid
);
40 static inline void *pgtable_quicklist_alloc(void)
42 unsigned long *ret
= NULL
;
46 ret
= pgtable_quicklist
;
47 if (likely(ret
!= NULL
)) {
48 pgtable_quicklist
= (unsigned long *)(*ret
);
50 --pgtable_quicklist_size
;
54 ret
= (unsigned long *)__get_free_page(GFP_KERNEL
| __GFP_ZERO
);
60 static inline void pgtable_quicklist_free(void *pgtable_entry
)
63 int nid
= page_to_nid(virt_to_page(pgtable_entry
));
65 if (unlikely(nid
!= numa_node_id())) {
66 free_page((unsigned long)pgtable_entry
);
72 *(unsigned long *)pgtable_entry
= (unsigned long)pgtable_quicklist
;
73 pgtable_quicklist
= (unsigned long *)pgtable_entry
;
74 ++pgtable_quicklist_size
;
78 static inline pgd_t
*pgd_alloc(struct mm_struct
*mm
)
80 return pgtable_quicklist_alloc();
83 static inline void pgd_free(pgd_t
* pgd
)
85 pgtable_quicklist_free(pgd
);
88 #ifdef CONFIG_PGTABLE_4
90 pgd_populate(struct mm_struct
*mm
, pgd_t
* pgd_entry
, pud_t
* pud
)
92 pgd_val(*pgd_entry
) = __pa(pud
);
95 static inline pud_t
*pud_alloc_one(struct mm_struct
*mm
, unsigned long addr
)
97 return pgtable_quicklist_alloc();
100 static inline void pud_free(pud_t
* pud
)
102 pgtable_quicklist_free(pud
);
104 #define __pud_free_tlb(tlb, pud) pud_free(pud)
105 #endif /* CONFIG_PGTABLE_4 */
108 pud_populate(struct mm_struct
*mm
, pud_t
* pud_entry
, pmd_t
* pmd
)
110 pud_val(*pud_entry
) = __pa(pmd
);
113 static inline pmd_t
*pmd_alloc_one(struct mm_struct
*mm
, unsigned long addr
)
115 return pgtable_quicklist_alloc();
118 static inline void pmd_free(pmd_t
* pmd
)
120 pgtable_quicklist_free(pmd
);
123 #define __pmd_free_tlb(tlb, pmd) pmd_free(pmd)
126 pmd_populate(struct mm_struct
*mm
, pmd_t
* pmd_entry
, struct page
*pte
)
128 pmd_val(*pmd_entry
) = page_to_phys(pte
);
132 pmd_populate_kernel(struct mm_struct
*mm
, pmd_t
* pmd_entry
, pte_t
* pte
)
134 pmd_val(*pmd_entry
) = __pa(pte
);
137 static inline struct page
*pte_alloc_one(struct mm_struct
*mm
,
140 return virt_to_page(pgtable_quicklist_alloc());
143 static inline pte_t
*pte_alloc_one_kernel(struct mm_struct
*mm
,
146 return pgtable_quicklist_alloc();
149 static inline void pte_free(struct page
*pte
)
151 pgtable_quicklist_free(page_address(pte
));
154 static inline void pte_free_kernel(pte_t
* pte
)
156 pgtable_quicklist_free(pte
);
159 #define __pte_free_tlb(tlb, pte) pte_free(pte)
161 extern void check_pgt_cache(void);
163 #endif /* _ASM_IA64_PGALLOC_H */