/arch/powerpc/include/asm/pgalloc.h

 1#ifndef _ASM_POWERPC_PGALLOC_H
 2#define _ASM_POWERPC_PGALLOC_H
 3#ifdef __KERNEL__
 4
 5#include <linux/mm.h>
 6
 7#ifdef CONFIG_PPC_BOOK3E
 8extern void tlb_flush_pgtable(struct mmu_gather *tlb, unsigned long address);
 9#else /* CONFIG_PPC_BOOK3E */
10static inline void tlb_flush_pgtable(struct mmu_gather *tlb,
11				     unsigned long address)
12{
13}
14#endif /* !CONFIG_PPC_BOOK3E */
15
16static inline void pte_free_kernel(struct mm_struct *mm, pte_t *pte)
17{
18	free_page((unsigned long)pte);
19}
20
21static inline void pte_free(struct mm_struct *mm, pgtable_t ptepage)
22{
23	pgtable_page_dtor(ptepage);
24	__free_page(ptepage);
25}
26
27#ifdef CONFIG_PPC64
28#include <asm/pgalloc-64.h>
29#else
30#include <asm/pgalloc-32.h>
31#endif
32
33#ifdef CONFIG_SMP
34struct mmu_gather;
35extern void tlb_remove_table(struct mmu_gather *, void *);
36
37static inline void pgtable_free_tlb(struct mmu_gather *tlb, void *table, int shift)
38{
39	unsigned long pgf = (unsigned long)table;
40	BUG_ON(shift > MAX_PGTABLE_INDEX_SIZE);
41	pgf |= shift;
42	tlb_remove_table(tlb, (void *)pgf);
43}
44
45static inline void __tlb_remove_table(void *_table)
46{
47	void *table = (void *)((unsigned long)_table & ~MAX_PGTABLE_INDEX_SIZE);
48	unsigned shift = (unsigned long)_table & MAX_PGTABLE_INDEX_SIZE;
49
50	pgtable_free(table, shift);
51}
52#else /* CONFIG_SMP */
53static inline void pgtable_free_tlb(struct mmu_gather *tlb, void *table, unsigned shift)
54{
55	pgtable_free(table, shift);
56}
57#endif /* !CONFIG_SMP */
58
59static inline void __pte_free_tlb(struct mmu_gather *tlb, struct page *ptepage,
60				  unsigned long address)
61{
62	tlb_flush_pgtable(tlb, address);
63	pgtable_page_dtor(ptepage);
64	pgtable_free_tlb(tlb, page_address(ptepage), 0);
65}
66
67#endif /* __KERNEL__ */
68#endif /* _ASM_POWERPC_PGALLOC_H */