0186f47e70
Refactor the RCU based pte free code that was used on ppc64 to be used on all powerpc. Additionally refactor pte_free() & pte_free_kernel() into common code between ppc32 & ppc64. Signed-off-by: Kumar Gala <galak@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
54 lines
1.1 KiB
C
54 lines
1.1 KiB
C
#ifndef _ASM_POWERPC_PGALLOC_H
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#define _ASM_POWERPC_PGALLOC_H
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#ifdef __KERNEL__
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#include <linux/mm.h>
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static inline void pte_free_kernel(struct mm_struct *mm, pte_t *pte)
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{
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free_page((unsigned long)pte);
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}
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static inline void pte_free(struct mm_struct *mm, pgtable_t ptepage)
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{
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pgtable_page_dtor(ptepage);
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__free_page(ptepage);
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}
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typedef struct pgtable_free {
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unsigned long val;
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} pgtable_free_t;
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#define PGF_CACHENUM_MASK 0x7
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static inline pgtable_free_t pgtable_free_cache(void *p, int cachenum,
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unsigned long mask)
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{
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BUG_ON(cachenum > PGF_CACHENUM_MASK);
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return (pgtable_free_t){.val = ((unsigned long) p & ~mask) | cachenum};
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}
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#ifdef CONFIG_PPC64
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#include <asm/pgalloc-64.h>
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#else
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#include <asm/pgalloc-32.h>
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#endif
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extern void pgtable_free_tlb(struct mmu_gather *tlb, pgtable_free_t pgf);
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#ifdef CONFIG_SMP
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#define __pte_free_tlb(tlb,ptepage) \
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do { \
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pgtable_page_dtor(ptepage); \
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pgtable_free_tlb(tlb, pgtable_free_cache(page_address(ptepage), \
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PTE_NONCACHE_NUM, PTE_TABLE_SIZE-1)); \
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} while (0)
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#else
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#define __pte_free_tlb(tlb, pte) pte_free((tlb)->mm, (pte))
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#endif
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#endif /* __KERNEL__ */
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#endif /* _ASM_POWERPC_PGALLOC_H */
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