diff options
Diffstat (limited to 'arch/powerpc/include/asm/pgalloc.h')
| -rw-r--r-- | arch/powerpc/include/asm/pgalloc.h | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/arch/powerpc/include/asm/pgalloc.h b/arch/powerpc/include/asm/pgalloc.h index b4505ed0f0f2..5d8480265a77 100644 --- a/arch/powerpc/include/asm/pgalloc.h +++ b/arch/powerpc/include/asm/pgalloc.h @@ -2,11 +2,52 @@ #define _ASM_POWERPC_PGALLOC_H #ifdef __KERNEL__ +#include <linux/mm.h> + +static inline void pte_free_kernel(struct mm_struct *mm, pte_t *pte) +{ + free_page((unsigned long)pte); +} + +static inline void pte_free(struct mm_struct *mm, pgtable_t ptepage) +{ + pgtable_page_dtor(ptepage); + __free_page(ptepage); +} + +typedef struct pgtable_free { + unsigned long val; +} pgtable_free_t; + +#define PGF_CACHENUM_MASK 0x7 + +static inline pgtable_free_t pgtable_free_cache(void *p, int cachenum, + unsigned long mask) +{ + BUG_ON(cachenum > PGF_CACHENUM_MASK); + + return (pgtable_free_t){.val = ((unsigned long) p & ~mask) | cachenum}; +} + #ifdef CONFIG_PPC64 #include <asm/pgalloc-64.h> #else #include <asm/pgalloc-32.h> #endif +extern void pgtable_free_tlb(struct mmu_gather *tlb, pgtable_free_t pgf); + +#ifdef CONFIG_SMP +#define __pte_free_tlb(tlb,ptepage) \ +do { \ + pgtable_page_dtor(ptepage); \ + pgtable_free_tlb(tlb, pgtable_free_cache(page_address(ptepage), \ + PTE_NONCACHE_NUM, PTE_TABLE_SIZE-1)); \ +} while (0) +#else +#define __pte_free_tlb(tlb, pte) pte_free((tlb)->mm, (pte)) +#endif + + #endif /* __KERNEL__ */ #endif /* _ASM_POWERPC_PGALLOC_H */ |