Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
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linux
1#ifndef _ASM_POWERPC_PGALLOC_H
2#define _ASM_POWERPC_PGALLOC_H
3#ifdef __KERNEL__
4
5#include <linux/mm.h>
6
7static inline void pte_free_kernel(struct mm_struct *mm, pte_t *pte)
8{
9 free_page((unsigned long)pte);
10}
11
12static inline void pte_free(struct mm_struct *mm, pgtable_t ptepage)
13{
14 pgtable_page_dtor(ptepage);
15 __free_page(ptepage);
16}
17
18typedef struct pgtable_free {
19 unsigned long val;
20} pgtable_free_t;
21
22#define PGF_CACHENUM_MASK 0x7
23
24static inline pgtable_free_t pgtable_free_cache(void *p, int cachenum,
25 unsigned long mask)
26{
27 BUG_ON(cachenum > PGF_CACHENUM_MASK);
28
29 return (pgtable_free_t){.val = ((unsigned long) p & ~mask) | cachenum};
30}
31
32#ifdef CONFIG_PPC64
33#include <asm/pgalloc-64.h>
34#else
35#include <asm/pgalloc-32.h>
36#endif
37
38extern void pgtable_free_tlb(struct mmu_gather *tlb, pgtable_free_t pgf);
39
40#ifdef CONFIG_SMP
41#define __pte_free_tlb(tlb,ptepage,address) \
42do { \
43 pgtable_page_dtor(ptepage); \
44 pgtable_free_tlb(tlb, pgtable_free_cache(page_address(ptepage), \
45 PTE_NONCACHE_NUM, PTE_TABLE_SIZE-1)); \
46} while (0)
47#else
48#define __pte_free_tlb(tlb, pte, address) pte_free((tlb)->mm, (pte))
49#endif
50
51
52#endif /* __KERNEL__ */
53#endif /* _ASM_POWERPC_PGALLOC_H */