1
2#ifndef _ASM_POWERPC_BOOK3S_32_PGALLOC_H
3#define _ASM_POWERPC_BOOK3S_32_PGALLOC_H
4
5#include <linux/threads.h>
6#include <linux/slab.h>
7
8static inline pgd_t *pgd_alloc(struct mm_struct *mm)
9{
10 return kmem_cache_alloc(PGT_CACHE(PGD_INDEX_SIZE),
11 pgtable_gfp_flags(mm, GFP_KERNEL));
12}
13
14static inline void pgd_free(struct mm_struct *mm, pgd_t *pgd)
15{
16 kmem_cache_free(PGT_CACHE(PGD_INDEX_SIZE), pgd);
17}
18
19
20
21
22
23
24#define pmd_free(mm, x) do { } while (0)
25#define __pmd_free_tlb(tlb,x,a) do { } while (0)
26
27
28static inline void pmd_populate_kernel(struct mm_struct *mm, pmd_t *pmdp,
29 pte_t *pte)
30{
31 *pmdp = __pmd(__pa(pte) | _PMD_PRESENT);
32}
33
34static inline void pmd_populate(struct mm_struct *mm, pmd_t *pmdp,
35 pgtable_t pte_page)
36{
37 *pmdp = __pmd(__pa(pte_page) | _PMD_PRESENT);
38}
39
40static inline void pgtable_free(void *table, unsigned index_size)
41{
42 if (!index_size) {
43 pte_fragment_free((unsigned long *)table, 0);
44 } else {
45 BUG_ON(index_size > MAX_PGTABLE_INDEX_SIZE);
46 kmem_cache_free(PGT_CACHE(index_size), table);
47 }
48}
49
50#define get_hugepd_cache_index(x) (x)
51
52static inline void pgtable_free_tlb(struct mmu_gather *tlb,
53 void *table, int shift)
54{
55 unsigned long pgf = (unsigned long)table;
56 BUG_ON(shift > MAX_PGTABLE_INDEX_SIZE);
57 pgf |= shift;
58 tlb_remove_table(tlb, (void *)pgf);
59}
60
61static inline void __tlb_remove_table(void *_table)
62{
63 void *table = (void *)((unsigned long)_table & ~MAX_PGTABLE_INDEX_SIZE);
64 unsigned shift = (unsigned long)_table & MAX_PGTABLE_INDEX_SIZE;
65
66 pgtable_free(table, shift);
67}
68
69static inline void __pte_free_tlb(struct mmu_gather *tlb, pgtable_t table,
70 unsigned long address)
71{
72 pgtable_free_tlb(tlb, table, 0);
73}
74#endif
75